WO2011089908A1 - 細胞観察装置及び細胞培養方法 - Google Patents
細胞観察装置及び細胞培養方法 Download PDFInfo
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- WO2011089908A1 WO2011089908A1 PCT/JP2011/000287 JP2011000287W WO2011089908A1 WO 2011089908 A1 WO2011089908 A1 WO 2011089908A1 JP 2011000287 W JP2011000287 W JP 2011000287W WO 2011089908 A1 WO2011089908 A1 WO 2011089908A1
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/30—Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration
- C12M41/36—Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration of biomass, e.g. colony counters or by turbidity measurements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/0004—Microscopes specially adapted for specific applications
- G02B21/0088—Inverse microscopes
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/32—Micromanipulators structurally combined with microscopes
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/36—Microscopes arranged for photographic purposes or projection purposes or digital imaging or video purposes including associated control and data processing arrangements
Definitions
- the present invention relates to a cell observation apparatus and a cell culture method.
- Non-Patent Document 1 The procedure for establishing artificial pluripotent stem cells (iPS cells) is disclosed in Non-Patent Document 1, for example.
- a feeder cell layer is formed on the bottom surface of a culture container containing a culture solution, human adult skin cells (fibroblasts) are seeded thereon, and then the cells are applied to the cells.
- 4 genes called Yamanaka factor are introduced (retroviral vector for introducing 4 genes is added).
- a cell colony in which only 4 genes are introduced Non-iPS cell colony
- IPS cell colony appears, and only the latter of these is picked with a syringe to establish an iPS cell line.
- picking of cell colonies is performed manually by a skilled researcher while looking through the eyepiece of the microscope.
- the researcher sets the observation magnification of the microscope to the low magnification side, observes a relatively wide range of the culture vessel, and searches for iPS cell colonies.
- setting the microscope observation magnification to the high magnification side, confirming that the cell colony is an iPS cell colony The observation magnification is returned to the low magnification side, and the tip of the syringe is inserted into the dish to pick a cell colony.
- the present invention provides a cell observation apparatus and a cell culture method that are effective for reducing the labor required when a user performs operations (injection, patch clamp, picking, etc.) on cells existing in a culture vessel.
- the cell observation apparatus includes an observation stage for supporting a cell culture vessel, an observation stage for observing a positional relationship between an operation needle for operating the cell in the culture vessel and the cell in the culture vessel.
- an observation stage for observing a positional relationship between a macro imaging optical system for acquiring a wide-area image of the culture container in FIG. 5, an operation needle for operating a cell in the culture container, and a cell in the culture container, A micro imaging optical system that acquires an image; and a control unit that controls the operation needle that operates the cells in the culture vessel, and the micro imaging optical system faces the macro imaging optical system with the observation stage interposed therebetween Placed on the side.
- the control means controls the operating needle so as to pick the target cell from the culture container based on the partial image, and seeds the picked target cell in another culture container. Good.
- the cell culture method of the present invention is a cell culture method for culturing cells using the cell observation device of the present invention, wherein the picked target cells are seeded in the separate culture container, Repeating a step of transporting another culture vessel to an incubator and a step of culturing the seeded target cells by the incubator for a certain period and then returning the other culture vessel to the cell observation device. To increase the number of target cells.
- the cell observation apparatus of the present invention includes an observation stage that supports a cell culture container, a macro imaging optical system that acquires a wide-area image of the culture container in the observation stage, and a micro that acquires a partial image of the culture container.
- an observation stage that supports a cell culture container
- a macro imaging optical system that acquires a wide-area image of the culture container in the observation stage
- a micro that acquires a partial image of the culture container.
- the cell culturing method of the present invention is a cell culturing method for culturing cells, wherein a macro imaging step for macro-observing a culture container containing the cells being cultured and acquiring a wide area image, and from the wide area image, A micro imaging step of identifying a position of the cell, micro-observing the cell, obtaining a partial image in the wide area image, a determination step of determining the state of the cell based on the partial image, and the determination step As a result of determining the state of the cells, in order to pick good cells from the culture container, a picking step for controlling the operation needle based on the wide area image and the partial image, and the good picked by the operation needle After inoculating various cells into the other culture container, transporting the other culture container to an incubator; and Ri certain period, and a culture step of culturing the good cells the seeded, increasing the number of the good cells by repeating the above steps.
- the present invention it is possible to realize a cell observation apparatus and a cell culture method that are effective for reducing the labor required when a user performs operations on cells existing in a culture vessel.
- FIG. 1 is a diagram illustrating the configuration of the mechanical part of the system.
- this system includes an inverted microscope 10 for observing cells in the culture container 30, a manipulator 20 for operating the cells in the culture container 30, and an electrically powered storage that supports the storage container 40.
- a stage 60, a manipulator controller 21 for driving the manipulator 20, and a stage controller 12 for driving the observation stage 11 of the inverted microscope 10 are provided.
- the system also includes a computer (not shown) (the computer will be described later).
- the inverted microscope 10 includes a transmission type and electric observation stage 11 that supports the culture vessel 30, a macro imaging optical system (stereoscopic microscope) 14 that acquires an entire image of the culture vessel 30 from the upper front of the culture vessel 30, and a culture A micro-imaging optical system (magnifying microscope) 18 that acquires an enlarged image of a part of the container 30 from the lower front of the culture container 30 and an oblique illumination optical system 15 that illuminates the entire culture container 30 from an oblique direction above the culture container 30.
- a transmission type and electric observation stage 11 that supports the culture vessel 30, a macro imaging optical system (stereoscopic microscope) 14 that acquires an entire image of the culture vessel 30 from the upper front of the culture vessel 30, and a culture A micro-imaging optical system (magnifying microscope) 18 that acquires an enlarged image of a part of the container 30 from the lower front of the culture container 30 and an oblique illumination optical system 15 that illuminates the entire culture container 30 from an oblique direction above the culture container 30.
- an epi-illumination fluorescent illumination optical system 17 that irradiates a part of the culture vessel 30 through the objective lens 18e of the micro imaging optical system 18 from the lower front of the culture vessel 30 and the focal point of the objective lens 18e with respect to the culture vessel 30
- a focus knob 13 is provided for manual adjustment by the user.
- the culture vessel 30 is a dish having a diameter of 100 mm, for example.
- a feeder cell layer is formed on the bottom surface of the culture vessel 30, and the feeder cell layer is filled with a culture solution.
- human feeder skin cells fibroblasts
- a retroviral vector for introducing 4 genes called Yamanaka factor is added to these cells.
- a fluorescent gene that emits fluorescence of a specific color (here, green) only when differentiation ability is expressed after the introduction of the four genes is introduced into these cells in advance.
- the focal plane of the objective lens 18e of the micro imaging optical system 18 is positioned in the vicinity of the bottom surface of the culture vessel 30 (in the vicinity of the feeder cell layer).
- the observation stage 11 holds the culture vessel 30 fixed by a holder suitable for the shape of the culture vessel 30. Therefore, even if the culture container 30 is temporarily removed from the observation stage 11 for exchanging the culture medium, the posture and arrangement position of the culture container 30 with respect to the observation stage 11 are reproduced.
- the observation stage 11 is connected to the stage controller 12, and when the user operates the stage controller 12, the observation stage 11 moves the culture vessel 30 along the mounting table of the observation stage 11 according to the operation content ( XY direction).
- observation stage 11 and the stage controller 12 may be directly connected, it is assumed here that they are indirectly connected via a computer control circuit (FIG. 2) for the sake of explanation.
- the micro imaging optical system 18 includes an electric revolver 18d holding a plurality of objective lenses, an optical path bending mirror 18c, an imaging optical system 18b, and an imaging device 18a, and a field of the objective lens 18e in the culture vessel 30.
- An enlarged image for example, a 10 times image
- the optical axis of the objective lens 18 e of the micro imaging optical system 18 is perpendicular to the reference plane of the observation stage 11.
- the revolver 18d holds a plurality of objective lenses having different magnifications, and switches the objective lens 16e of the micro imaging optical system 18 to another objective lens. Thereby, the observation magnification of the micro imaging optical system 18 is switched between 10 times and 4 times, for example.
- the macro imaging optical system 14 includes an imaging lens 14b and an imaging element 14a, and acquires a reduced image (for example, an image of 0.5 times) of the entire culture vessel 30.
- the imaging lens 14b conjugates the vicinity of the culture vessel 30 and the imaging surface of the imaging device 14a, and forms the entire image of the culture vessel 30 with sufficient contrast on the imaging surface without performing focus adjustment. be able to. Note that the optical axis of the imaging lens 14 b coincides with the optical axis of the objective lens 18 e of the micro imaging optical system 18.
- the oblique illumination optical system 15 includes an oblique illumination light source 15a composed of a white light source and the like, and an illumination lens 15b, and illuminates the entire culture vessel 30 from the oblique direction with a substantially uniform illuminance. Note that the optical axis of the illumination lens 15 b intersects the optical axis of the macro imaging optical system 14 in the vicinity of the mounting stage of the observation stage 11.
- the scattered light generated in the culture vessel 30 enters the macro imaging optical system 14 and the objective lens 18e of the micro imaging optical system 18, but is cultured. It is assumed that the non-scattered light (direct light) generated in the container 30 hardly enters the objective lens 18e of the macro imaging optical system 14 and the micro imaging optical system 18.
- the micro imaging optical system 18 acquires an enlarged dark field image (hereinafter referred to as “micro dark field image”) of the partial region of the culture vessel 30 described above. be able to. Further, when the oblique illumination light source 15a is turned on, the macro imaging optical system 14 can acquire a reduced dark field image of the entire culture vessel 30 (hereinafter referred to as “macro dark field image”). .
- the epi-illumination fluorescent illumination optical system 17 includes an excitation light source 17a, an illumination lens 17b, and a fluorescence block 17c, and irradiates the aforementioned partial region with the excitation light via the objective lens 18e of the micro imaging optical system 18.
- the emission wavelength of the excitation light source 17a is set to a wavelength for exciting the fluorescent substance expressed in the cell
- the detection wavelength of the fluorescent block 17c is the wavelength of the fluorescence emitted by the fluorescent substance (here, green). Is set to the same wavelength.
- the micro imaging optical system 18 can acquire an enlarged fluorescent image (hereinafter referred to as “micro fluorescent image”) of the partial region of the culture vessel 30 described above.
- the fluorescent block 17c of the incident-light fluorescent illumination optical system 17 is configured to be detachable with respect to the optical path of the micro imaging optical system 18, and the insertion / removal is performed by an electric mechanism (not shown).
- the micro imaging optical system 18 acquires a micro dark field image
- the fluorescent block 17c is detached from the optical path
- the micro imaging optical system 18 acquires a micro fluorescent image
- the fluorescent block 17c is inserted into the optical path.
- the manipulator 20 is, for example, a hydraulic manipulator, and is equipped with an operation needle for operating the cells in the culture vessel 30.
- the syringe 22 is attached as an operation needle. Note that the tip of the syringe 22 can be replaced with a new one as necessary.
- the manipulator 20 is provided on a common base with the inverted microscope 10 at a position removed from the inverted microscope 10, supports the pump portion of the syringe 22, and points the tip of the syringe 22 obliquely downward.
- the manipulator 20 rotates the syringe 22 around a rotation axis 20a parallel to the optical axis of the macro imaging optical system 14, or shifts the syringe 22 in a direction along the rotation axis 20a.
- the manipulator 20 can set the combination of the rotational position and the shift position of the syringe 22 to a predetermined observation state (state indicated by a solid line in FIG. 1) as necessary.
- the manipulator 20 can set the combination of the rotational position and the shift position of the syringe 22 to a predetermined retracted state (state indicated by a dotted line in FIG. 1) as necessary.
- FIG. 1 is a state in which the tip of the syringe 22 is disposed on the optical axis of the macro imaging optical system 14 and the tip of the syringe 22 is located above the top of the culture vessel 30.
- the syringe 22 is in this observation state, there is no possibility that the syringe 22 will contact the culture vessel 30 even if the observation stage 11 is moved in the XY direction. Further, if the shift position of the syringe 22 is displaced downward from this observation state, the tip of the syringe 22 can be immersed in the culture solution in the culture vessel 30.
- FIG. 1 is a state in which the entire syringe 22 is completely detached from the inverted microscope 10.
- the storage portion of the storage container 40 is disposed below the tip of the syringe 22 in the retracted state (storage position indicated by reference numeral 40a in FIG. 1).
- manipulator 20 is connected to the manipulator controller 21, and when the user operates the manipulator controller 21, the syringe 22 is driven according to the operation content.
- manipulator 20 and the manipulator controller 21 may be directly connected, it is assumed here that it is indirectly connected through a control circuit (FIG. 2) of the computer for explanation.
- the pump portion of the syringe 22 may be manually operated directly by the user, but here it is assumed that it is electrically driven and driven by the manipulator 20 for explanation.
- the user performs inhalation of the liquid (here, the culture solution containing cells is referred to as “liquid”) into the syringe 22 and discharge of the liquid from the syringe 22 by operating the manipulator controller 21. It will be.
- the storage stage 60 holds the storage container 40 by a holder suitable for the shape of the storage container 40.
- a plurality of storage portions 40-1 to 40-8 are formed side by side in the XY plane with each opening facing upward.
- the liquid can be stored in the storage portion (effective storage portion) disposed at the storage position 40a. Further, when the storage stage 60 moves the storage container 40 in the XY direction, the effective storage portion can be switched between the storage portions 40-1 to 40-8.
- FIG. 2 is a diagram for explaining the computer of this system.
- the computer 50 of this system includes a control circuit 52, a CPU 51, a storage memory 53, a work memory 54, and an interface circuit 55.
- control circuit 52 includes the observation stage 11 shown in FIG. 1, the revolver 18d, the image sensors 14a and 18a, the fluorescent block 17c, the oblique illumination light source 15a, the excitation light source 17a, the accommodation stage 60, The stage controller 12 and the manipulator controller 21 are connected.
- the computer 50 is preinstalled with an operation program for the CPU 51.
- This operation program is stored in the storage memory 53, read onto the work memory 54 as necessary, and executed by the CPU 51.
- the computer 50 is connected to input / output devices such as a keyboard 56, a mouse 57, and a display 58 via an interface circuit 55.
- the user can input various instructions to the CPU 51 of the computer 50 via the keyboard 56 or the mouse 57.
- transmission / reception of information between the computer 50 and the user is performed by a known GUI using a keyboard 56, a mouse 57, and a display 58.
- Information input from the user to the computer 50 includes an observation schedule of the culture vessel 30, an instruction to start observation, and an instruction to start picking support.
- the observation schedule indicates the observation frequency of the culture vessel 30 and is set to “every 24 hours”, for example. This observation schedule is stored in the storage memory 53.
- the observation start instruction is an instruction input when preparation of the culture vessel 30 is completed and culture is started, and is an instruction for causing the CPU 51 to perform an observation process (described later).
- the picking support start instruction is an instruction input when picking necessary cells (here, iPS cell colonies) after culturing has been performed for a sufficient period of time. This is an instruction to execute (described later).
- FIG. 3 is a flowchart of the observation process performed by the CPU 51. Hereafter, each step of FIG. 3 is demonstrated in order. It is assumed that the tip of the syringe 22 is removed from the syringe 22 when the observation process is executed.
- Step S11 The CPU 51 reads out the observation schedule stored in the storage memory 53 and compares the observation schedule with the current date and time to determine whether or not the observation time has come. When the observation time has come, the process proceeds to step S12, and when the observation time has not come, the process waits.
- Step S12 The CPU 51 instructs the control circuit 52 to perform tiling photography with oblique illumination.
- the control circuit 52 drives the fluorescent block 17c as necessary to disengage it from the optical path of the micro imaging optical system 18, and drives the revolver 18d as necessary to set the objective lens for 10 ⁇ observation to the micro imaging optical system. Insert into 18 optical paths.
- the control circuit 52 turns on the oblique illumination light source 15a, and repeatedly drives the imaging device 18a while moving the observation stage 11 stepwise in the XY directions, whereby a plurality of individual regions of the culture vessel 30 are individually copied. A micro dark field image is acquired and the oblique illumination light source 15a is turned off.
- the CPU 51 assigns coordinate information (container coordinate information) on the culture container of the corresponding partial region to each of the plurality of micro dark field images acquired by the control circuit 52, and then the micro dark field images are displayed. Write to the storage memory 53. In writing, the CPU 51 gives the current date information (observation date information) to each of these micro dark field images.
- Step S13 The CPU 51 gives an instruction to the control circuit 52 to perform tiling photography using an excitation light source.
- the control circuit 52 drives the fluorescent block 17 c and inserts it into the optical path of the micro imaging optical system 18.
- the control circuit 52 turns on the excitation light source 17a and repeatedly drives the imaging device 18a while moving the observation stage 11 in the same movement pattern as in step S13, thereby individually copying each partial region of the culture vessel 30. A plurality of micro fluorescent images are acquired, and the excitation light source 17a is turned off.
- the CPU 51 assigns coordinate information (container coordinate information) on the culture vessel of the corresponding partial region to each of the plurality of micro fluorescent images acquired by the control circuit 52, and then saves the micro fluorescent images. Write to memory 53. In writing, the CPU 51 gives the current date information (observation date information) to these micro fluorescent images.
- the high-luminance portion of the micro fluorescent image is expressed by the same color as the color corresponding to the detection wavelength of the fluorescent block 17c (here, green).
- Step S14 The CPU 51 determines whether or not an end instruction has been input from the user. If not, the process returns to step S11. If an end instruction has been input, the flow ends.
- the CPU 51 acquires a micro dark field image and a micro fluorescent image relating to each partial region of the culture vessel 30 each time the observation time comes, and writes them into the storage memory 53.
- the history of the micro dark field image and the history of the micro fluorescent image are gradually accumulated for each partial region of the culture vessel 30.
- FIG. 4 and 5 are flowcharts of picking support processing by the CPU 51.
- FIG. Hereafter, each step of FIG. 4, FIG. 5 is demonstrated in order.
- the user attaches / replaces the tip of the syringe 22 as necessary.
- the user attaches the tip of the syringe 22 at the start of the picking support process. Suppose that they are used continuously as they are.
- Step S20 The CPU 51 reads out images for each partial area (a plurality of micro dark field images and a plurality of micro fluorescent images) stored in the storage memory 53, and creates a time-lapse moving image for each partial area based on these images. And stored in the storage memory 53.
- the time-lapse moving image of each partial area is created as follows. That is, the CPU 51 synthesizes a plurality of micro dark field images and a plurality of micro fluorescent images related to the target partial region with a common observation date and time into a single image, and a plurality of images obtained thereby. The composite images are connected in order of observation date and time.
- the time-lapse moving image created in this way is the time-lapse moving image of the partial area.
- the CPU 51 gives an instruction to the control circuit 52 to set each part of the system to the initial state.
- the control circuit 52 drives the manipulator 20 as necessary, sets the syringe 22 to the observation state, drives the observation stage 11 as necessary, and centers the culture vessel 30 on the optical axis of the macro imaging optical system 14.
- This optical axis is simply referred to as “optical axis”.
- control circuit 52 drives the fluorescent block 17c as necessary to detach it from the optical path of the micro imaging optical system 18, and drives the revolver 18d as necessary to micro-imaging the objective lens for 10 ⁇ observation. It is inserted into the optical path of the optical system 18.
- control circuit 52 drives the housing stage 60 as necessary, and sets an effective housing portion as the first housing portion (the housing portion 40-1).
- Step S21 The CPU 51 instructs the control circuit 52 to start displaying a live image.
- the control circuit 52 turns on the oblique illumination light source 15a, and starts to continuously drive both the imaging element 18a of the micro imaging optical system 18 and the imaging element 14a of the macro imaging optical system 18. Thereby, the micro dark field image and the macro dark field image start to be acquired in parallel and continuously.
- the CPU 51 starts to sequentially output the micro dark field images sequentially acquired by the control circuit 52 to a predetermined area on the display 58 as indicated by reference numeral 58b in FIG. 6, and the macro dark field images sequentially acquired by the control circuit 52. Images are sequentially output to other predetermined areas on the display 58 as indicated by reference numeral 58c in FIG.
- a live image 58b of a micro dark field image (hereinafter referred to as “micro live image 58b”) and a live image 58c of a macro dark field image (hereinafter referred to as “macro live image 58c”). .) Will start appearing at the same time.
- the CPU 51 displays a magnification change button 58b 'in the vicinity of the micro live image 58b on the display 58.
- the magnification change button 58 b ′ is a button for the user to input an observation magnification change instruction to the computer 50.
- the dark field image 22 ′ of the syringe 22 is also shown in the micro live image 58 b and the macro live image 58 c.
- the dark field image at the tip of the syringe 22 is the micro live image 58b and the macro live image 58c. Located in the center of each.
- the dark field image of the culture vessel 30 moves on the micro live image 58b and the macro live image 58c, and the syringe 22
- the dark field image 22 ′ does not move.
- Step S22 The CPU 23 reads the micro-fluorescence images stored in the storage memory 53 for each partial area and has the latest observation date and time, performs size reduction processing on them, and arranges them in container coordinate order. Thus, a tiling fluorescence image is created. This tiling fluorescence image is used as a guide image.
- the CPU 51 performs a luminance reduction process on the tiling fluorescent image and then superimposes it on the macro live image 58c (reference numeral 58d in FIG. 6). However, in this superimposed display, the CPU 51 adjusts the superimposed position of the tiling fluorescent image 58d so that the container center in the tiling fluorescent image 58d matches the container center in the macro live image 58c.
- the degree is visualized at the same time.
- the region to be expressed in green (the region emitting fluorescence) in the tiling fluorescence image 58d is represented by a solid color (the same applies to the other drawings). The user can easily find a cell colony that seems to be an iPS cell colony on such a macro live image 58c.
- the CPU 51 in this step highlights the partial region arranged at the optical axis position among the plurality of micro fluorescent images (plural partial regions) constituting the tiling fluorescent image 58d as a cell extraction source candidate. To do.
- the enhancement of the partial area is performed by thickening the outline of the partial area as shown in FIGS.
- the current extraction source candidate designation can be canceled and the selected partial area can be designated as a new extraction source candidate.
- the user designates the partial area by operating the mouse 57 or the keyboard 56 and moving the cursor (not shown) on the display 58 to the partial area to be designated, and then clicking the mouse 57 (or By pressing the enter key of the keyboard 56).
- the CPU 51 in this step reads out the time-lapse moving image of the extraction source candidate from the storage memory 53 and writes it in the moving image display area of the work memory 54 as the history of the extraction source candidate. Then, the CPU 51 starts displaying a still image of a predetermined frame (for example, the latest frame) of the time-lapse moving image as a sample image in a predetermined area on the display 58 as indicated by reference numeral 58a in FIG.
- a predetermined frame for example, the latest frame
- the CPU 51 displays a playback button 58a 'in the vicinity of the sample image 58a (a sample image of a time-lapse moving image) on the display 58.
- the playback button 58 a ′ is a button for the user to input a playback instruction for a time-lapse moving image to the computer 50.
- the CPU 51 in this step creates a container image of the storage container 40 and displays it on the surplus area of the display 58 as indicated by reference numeral 58e in FIG.
- the container image 58e is an image schematically representing the arrangement of the plurality of storage portions of the storage container 40.
- the CPU 51 highlights the plurality of storage units constituting the container image 58e that are arranged at the above-described storage position 40a as the current discharge destination candidates.
- the emphasis of the accommodating portion is performed by thickening the outline of the accommodating portion as shown in FIG.
- the user designates the accommodation unit by operating the mouse 57 or the keyboard 56 and moving the cursor (not shown) on the display 58 to the accommodation unit to be designated, and then clicking the mouse 57 (or By pressing the enter key of the keyboard 56).
- Step S23 The CPU 51 determines whether or not there is a new designation of the extraction source candidate. If there is a new designation, the process proceeds to step S24, and if there is no new designation, the process proceeds to step S26. To do.
- Step S24 The eye CPU 51 arranges the newly designated extraction source candidate on the optical axis based on the newly designated container coordinates of the extraction source candidate and the coordinates of the observation stage 11 at the current time.
- the target coordinates are calculated, and a driving instruction for the observation stage 11 is given to the control circuit 52 together with the target coordinates.
- the control circuit 52 drives the observation stage 11 so that the actual coordinates of the observation stage 11 coincide with the target coordinates, and arranges the center of the newly designated extraction source candidate on the optical axis.
- Step S25 The CPU 51 updates the tiling fluorescent image 58d on the display 58, the time-lapse moving image on the moving image display area, and the sample image 58a on the display 58 as follows.
- the CPU 51 cancels the highlighting of the tiling fluorescence image 58d at the current time, and starts highlighting of the extraction source candidate newly designated on the tiling fluorescence image 58.
- the CPU 51 shifts the overlapping position of the tiling fluorescence image 58d on the macro live image 58c in accordance with the displacement of the observation stage 11 in step S24, so that the tiling fluorescence image 58d is centered on the container of the macro live image 58c. Match the container center.
- the CPU 51 reads out the newly designated time-lapse moving image of the extraction source candidate from the storage memory 53 and overwrites it on the moving image display area of the work memory 54. Then, the CPU 51 starts displaying a predetermined frame (for example, the latest frame) of the time-lapse moving image instead of the currently displayed sample image 58a.
- a predetermined frame for example, the latest frame
- FIG. 8 shows an example of the screen after updating in this step.
- the extraction source candidate On the macro live image 58c shown in FIG. 8, a partial region deviating from the center of the container is designated as the extraction source candidate, and what is shown in the micro live image 58b is the micro dark field image of the extraction source candidate.
- the sample image 58a shows the history of the extraction source candidates (here, the state during the latest observation).
- Step S26 The CPU 51 determines whether or not there is a new designation of the discharge destination candidate. If there is a new designation, the process proceeds to step S27, and if there is no new designation, the process proceeds to step S29. .
- Step S27 The CPU 51 arranges the newly designated discharge destination candidate at the accommodation position 40a described above based on the newly designated discharge destination candidate number and the coordinates of the accommodation stage 60 at the present time. 60 target coordinates are calculated, and an instruction to drive the accommodation stage 60 is given to the control circuit 52 together with the target coordinates.
- the control circuit 52 drives the storage stage 11 so that the actual coordinates of the storage stage 60 coincide with the target coordinates, and places the newly specified discharge destination candidate at the storage position 40a.
- Step S28 The CPU 51 cancels the highlighting of the container image 58e at the current time, and starts highlighting of the newly designated discharge destination candidate.
- symbol 58e of FIG. 8 has shown the example of the container image 58e after the update by this step.
- Step S29 The CPU 51 determines whether or not an instruction to change the observation magnification has been input. If it has been input, the process proceeds to step S30, and if not, the process proceeds to step S31.
- Step S30 The CPU 51 instructs the control circuit 52 to change the observation magnification.
- the control circuit 52 switches the observation magnification of the micro imaging optical system 18 by driving the revolver 18d.
- Step S31 The CPU 51 determines whether or not a time-lapse moving image playback instruction has been input. If it has been input, the process proceeds to step S32. If not, the process proceeds to step S33.
- Step S32 The CPU 51 displays (reproduces and displays) the time-lapse moving image written on the moving image display area instead of the sample image 58a.
- the user observes the growth process of the cell colonies existing in the extraction source candidate (such as the temporal change of the fluorescence emission amount) and accurately determines whether or not the cell colonies are iPS cell colonies. Judgment can be made.
- the stage controller 12 is operated while viewing the micro live image 58b, and the iPS cell colony is slowly moved toward the tip of the syringe 22 as indicated by an arrow in FIG. And close.
- Step S33 The CPU 51 determines whether or not the stage controller 12 has been operated via the control circuit 52. If it has been operated, the process proceeds to step S34, and if it has not been operated, the process proceeds to step S35. .
- Step S34 The CPU 51 gives the drive signal generated by the stage controller 12 to the observation stage 11 via the control circuit 52. As a result, the observation stage 11 is driven as desired by the user. However, here, it is assumed that the moving range of the observation stage 11 is limited to a very small range that does not remove the tip of the syringe 22 from the extraction source candidate in the culture vessel 30. When the user determines that the iPS cell colony has sufficiently approached the tip of the syringe 22 on the micro live image 58b, the user stops driving the observation stage 11 and starts operating the manipulator controller 21.
- Step S35 The CPU 51 determines whether or not the manipulator controller 21 has been operated via the control circuit 52. If it has been operated, the process proceeds to step S36, and if it has not been operated, the process proceeds to step S39. .
- Step S36 The CPU 51 gives the drive signal generated by the manipulator controller 21 to the manipulator 20 via the control circuit 52.
- the manipulator 20 is driven as desired by the user. For example, the user shifts the syringe 22 downward to bring the tip of the syringe 22 into contact with the iPS cell colony, inhales the iPS cell colony into the syringe 22, sets the syringe 22 in the retracted state, and then the syringe.
- the iPS cell colony is discharged from 22 to the outside.
- Step S37 Based on the drive signal generated by the manipulator controller 21, the CPU 51 determines whether or not the liquid has been discharged from the retracted syringe 22 (whether or not the picking has been completed). If completed), the process proceeds to step S38. If not ejected (if picking has not been completed), the process proceeds to step S39.
- Step S38 As shown in FIG. 10, the CPU 51 further emphasizes and displays (for example, reverse display) the extraction source candidate on the tiling fluorescence image 58d, and gives the extracted mark 58d 'to the extraction candidate. Further, the CPU 51 further emphasizes and displays (for example, reverse display) the discharge destination candidates on the container image 58e, and gives a discharged mark 58e 'to the discharge destination candidates.
- the CPU 51 further emphasizes and displays (for example, reverse display) the extraction source candidate on the tiling fluorescence image 58d, and gives the extracted mark 58d 'to the extraction candidate.
- the CPU 51 further emphasizes and displays (for example, reverse display) the discharge destination candidates on the container image 58e, and gives a discharged mark 58e 'to the discharge destination candidates.
- the CPU 51 relates the relationship between the extracted mark 58d ′ and the discharged mark 58e ′.
- the CPU 51 recognizes the number of times of picking with respect to the culture vessel 30 from the number of executions of this step up to the present time, and uses a number representing the number of times for both the extracted mark 58d 'and the discharged mark 58e'. Therefore, the user can intuitively know on which part of the cells the cells in which partial regions are accommodated on the display 58.
- the extracted mark 58d ′ provided on the tiling fluorescence image 58d is not changed on the tiling fluorescence image 58d even if the superimposed position of the tiling fluorescence image 58d in the macro live image 58c is changed thereafter.
- the user can avoid mistakes such as redesignating an extracted partial region as an extraction source candidate, or mistakes of accommodating cells extracted from different cell colonies in the same accommodation unit.
- the partial area may be designated as a new extraction source candidate. it can.
- the storage part can be designated as a new discharge destination candidate.
- Step S39 The CPU 51 determines whether or not an end instruction has been input from the user. If not input, the CPU 51 returns to Step S23, and if input, ends the flow. Therefore, the user can repeat the picking of the cell colonies until the discharged mark 58e 'is given to all the accommodating parts of the container image 58e.
- this system includes the macro imaging optical system 14 and the micro imaging optical system 18 that observe the culture vessel 30 from opposite sides, and the oblique illumination optical system that illuminates the culture vessel 30 from an oblique direction, as shown in FIG. 15, it is possible to simultaneously observe a rough state (macro dark field image) of the entire culture container 30 and a detailed state (micro dark field image) of a part of the culture container 30.
- the computer 50 of the present system displays both the live image of the macro dark field image (macro live image 58c) and the live image of the micro dark field image (micro live image 58b) side by side on the display 58 at the same time.
- the objective lens There is no need to switch the objective lens between searching a cell colony that seems to be an iPS cell colony from a plurality of cell colonies in the culture vessel 30 and observing the cell colony in detail. It is only necessary to move the line of sight on the display 58 between the macro live image 58c and the micro live image 58b.
- the computer 50 of this system stores in advance the time-lapse moving image of each partial area of the culture vessel 30 in the storage memory 53.
- the computer 50 reads the time-lapse moving image of the partial area (extraction source candidate) located on the optical axis of the micro imaging optical system 18 from the storage memory 53 and displays it on the display 58 together with the micro live image 58b. Can confirm the detailed state of the cell colony and the history of the cell colony at the same time.
- the computer 50 of the present system displays the latest tiling fluorescence image 58d of the culture vessel 30 on the macro live image 58c, the user can present the current cell colonies scattered in the culture vessel 30. The appearance (texture, size, etc.) and the recent degree of fluorescence emission of these cell colonies can be observed simultaneously.
- the computer 50 of the present system drives the observation stage 11 in accordance with the designation of the extraction source candidate by the user and automatically arranges the extraction source candidate on the optical axis (step S24). It is possible to minimize the user's operation.
- the computer 50 of the present system determines whether or not the liquid is discharged from the retracted syringe 22 via the manipulator controller 21, and if it is discharged, the extraction destination candidate on the tiling fluorescent image 58d is determined. Since highlighting (reverse display) is performed, the user can intuitively know which partial region of cells has already been extracted on the tiling fluorescence image 58d.
- the characteristic configuration in the second embodiment is a configuration in which the cell observation system is automated. Specifically, the wide-area image (the entire image of the culture vessel) acquired by the macro imaging optical system 14 and the micro imaging optics The syringe 22 is configured to be automatically controlled by the manipulator 20 based on the partial image (image of the cell of interest) acquired by the system 18.
- the inverted microscope 10, the manipulator 20, and the storage stage 60 are arranged on the same base.
- the observation position in the culture container 30 is changed by moving the culture container 30 in the XY plane using the observation stage 11.
- the observation stage 11 is provided with observation position detection means 4 including an X direction position detection encoder 4X and a Y direction position detection encoder 4Y, and detects the XY coordinates of the observation stage 11.
- the observation position coordinates (corresponding to the cell coordinate system) (X, Y) in the culture vessel 30 are detected.
- the vertical movement of the objective lens 18 e by the focus knob 13 is detected by the observation position detection means 4 configured by the Z-direction position detection encoder 4 ⁇ / b> Z.
- An observation position coordinate Z is detected.
- the coordinate data (X, Y, Z) of the observation position in the culture vessel 30 is detected, and the coordinate data is registered in the memory of a CPU 51 (personal computer PC, etc., hereinafter referred to as PC) as a control device.
- PC personal computer PC, etc., hereinafter referred to as PC
- the manipulator 20 includes a motor that changes the rotation angle ⁇ of the syringe 22 (operation needle), a motor that changes the swing angle ⁇ of the syringe 22, and a motor that changes the movement amount Z of the syringe 22 in the optical axis direction. Yes.
- the coordinate system of the manipulator 20 is detected by a manipulator coordinate detection unit configured by position detection encoders in the X ′ direction, the Y ′ direction, and the Z ′ direction disposed on the manipulator 20. Then, the coordinates of the tip of the syringe 22 fixed to the manipulator 20 are registered in the memory of the PC 51 as coordinate data (X ′, Y ′, Z ′).
- a needle tip position detecting means 100 for detecting the tip of the syringe 22 fixed to the manipulator 20 is disposed in the vicinity of the manipulator 20.
- the needle tip position detecting means 100 is a camera (hereinafter referred to as a low magnification camera 100) using a low magnification imaging lens and an imaging device (for example, a CCD camera). It is desirable to use a lens having a numerical aperture of 0.2 or more and a field number of 1.5 mm or more in order to accurately position the tip of the syringe 22 at the set position in the observation field of the objective lens 18e.
- the needle tip position detecting means 100 may be constituted by a simple optical sensor that detects whether or not the needle tip has reached a predetermined position coordinate instead of the camera.
- the coordinate data of the set position in the field of view of the objective lens 18e and the coordinate data of the tip of the syringe 22 are relatively associated with the set position in the field of view of the low magnification camera 100 via the PC 51.
- the syringe 22 The tip is set at a set position in the field of view of the low magnification camera 100 and then driven by the manipulator 20 via the control means of the PC 51 to be positioned at the set position in the field of view of the objective lens 18e.
- the calibration of the coordinate position of the tip of the synringe 22 is performed.
- the culture vessel 30 is not placed on the observation stage 11.
- the coordinate data of the set position in the field of view of the macro imaging optical system 14 and the coordinate data of the tip of the syringe 22 are relatively associated with the set position in the field of view of the low magnification camera 100 via the PC 51, and this As a result, the tip of the syringe 22 is set at the set position in the field of view of the low-power camera 100 and then driven by the manipulator 20 via the control means of the PC 51 to the set position in the field of view of the macro imaging optical system 14. Positioned.
- the manipulator 20 is controlled by the control means provided in the PC 51 so that the distal end of the syringe 22 is within the observation field of the objective lens 18e from the set position in the field of view of the camera 100. Is set to a predetermined position of the culture vessel 30. The set position is in the vicinity of the center of the visual field and is an observation position suitable for entering the experiment operation.
- the home position of the coordinate system (X, Y, Z) of the inverted microscope 10 is initially set (S1).
- the focusing of the objective lens 18e of the inverted microscope 10 is performed.
- beads having a diameter of several ⁇ m such as polystyrene mounted on a cover glass are used, and the beads are focused on the center of the visual field of the objective lens 18e.
- the operator moves the bead to the center of the visual field of the objective lens 18e (using a crosshair for taking a photograph in the optical system) and operates the observation stage 11 and the focus knob 13 to align the bead. To burn.
- the observation position detection means 4 (4X, 4Y, 4Z) for detecting the XY movement of the observation stage 11 and the vertical movement of the objective lens 18e transmits the detected coordinate data (X0, Y0, Z0) to the PC 51. Then, the PC 51 registers the coordinate data (X0, Y0, Z0) in the memory as home position data.
- the focus knob 13 for moving the observation stage 11 and the objective lens 18e may be electric or manual.
- observation is performed with the distal end position of the syringe 22 at the set position in the field of view of the low magnification camera 100 (often set at the center position of the field of view) and the high magnification (for example, 40 times) objective lens 18e.
- the correlation between the set position in the observed visual field and the tip position of the syringe 22 (often set at the center of the visual field) is pre-registered in the memory of the PC 51.
- the coordinate data of the manipulator 20 at this time is registered in the PC 51. Is done.
- the tip of the syringe 22 is moved to a predetermined set position within the field of view of the objective lens 18e, the coordinate data of the manipulator 20 at this time is registered in the PC 51. With these two coordinate data, the correlation between the set position in the field of view of the low magnification camera 100 and the set position in the field of view of the objective lens 18e is determined by the PC 51.
- the operator moves the tip of the syringe 22 to the set position within the field of view of the objective lens 18e by using the manipulator 20, and moves the manipulator 20 in each of X′Y′Z ′ directions so that the tip of the syringe 22 is in focus.
- Move (S2) moves the tip of the syringe 22 to the set position within the field of view of the objective lens 18e by using the manipulator 20, and moves the manipulator 20 in each of X′Y′Z ′ directions so that the tip of the syringe 22 is in focus.
- the manipulator coordinate detecting means 22 transmits the detected coordinate data (X′0, Y′0, Z′0) of the manipulator 20 to the PC 51, and the PC 51 registers it in the memory (S3).
- a registration method a method using a manual switch may be used, or there may be an automatic focusing device for detecting the coordinates of the tip of the syringe 22 set at the set position in the field of view of the objective lens 18e.
- a method based on a focus signal generated by the autofocus device may be used.
- the operator moves the tip of the syringe 22 to the set position within the field of view of the low magnification camera 100 using the manipulator 20 and moves the manipulator 20 so that the low magnification camera 100 is focused on the tip of the syringe 22.
- Drive (S4) the operator moves the tip of the syringe 22 to the set position within the field of view of the low magnification camera 100 using the manipulator 20 and moves the manipulator 20 so that the low magnification camera 100 is focused on the tip of the syringe 22.
- the manipulator coordinate detecting means 22 transmits the detected coordinate data (X′1, Y′1, Z′1) of the manipulator 20 to the PC 51, and the PC 51 registers it in the memory (S5).
- a registration method a method using a manual switch may be used, or, if the low magnification camera 100 has an autofocus device, a method based on a focus signal generated by the autofocus device may be used.
- the amount of movement ( ⁇ , ⁇ , Z) of the tip of the syringe 22 is calculated by the PC 51.
- the initial setting operation that is, calibration is completed.
- the manipulator 20 is driven by the control means of the PC 51, and the tip of the syringe 22 is set at the set position in the field of view of the objective lens 18e. Set automatically.
- FIG. 14 is a configuration diagram of the cell production system.
- the cell production system of FIG. 14 is configured by connecting an incubator 300 and a cell observation system 103 (the system of the first embodiment or the second embodiment) with a culture container transport robot 200.
- the space 400 in which the cell production system exists is managed under a certain culture environment (including culture environment conditions such as temperature, humidity, and carbon dioxide).
- This cell production system acquires a wide area image by observing the culture vessel 103 in which cells are cultured with the macro imaging optical system 14, specifies the position of the cell from the wide area image with the micro imaging optical system 18, and Is micro-observed, and a partial image in the wide area image is acquired. Thereafter, the cell state is determined based on the partial image, and as a result of determining the cell state, good cells are picked from the culture vessel 103. Picking is performed by controlling the front end of the synringe 22 based on the wide area image and the partial image. Then, the cells picked by the synringe 22 are seeded in a new culture container 103, and then the new culture container 103 is transported to the incubator 300. The seeded cells are cultured for a certain period in an incubator. By repeating this routine, good cells can be cultured and increased.
- the picking control by the syringe 22 is performed as follows. That is, based on the wide-area image obtained by the macro imaging optical system, the XY coordinate position of the tip of the syringe 22 is matched with the XY coordinate position of the cell, and the tip is determined based on the partial image obtained by the micro imaging optical system.
- the cell is driven toward the XYZ coordinate position of the cell, and the cell is picked by the syringe 22. More specifically, it is as follows.
- the computer 50 in FIG. 2 automatically controls the manipulator 20 based on cell images acquired from the macro imaging optical system 14 and the micro imaging optical system 18 by executing a predetermined program, In addition to picking up the cells of interest, control is performed to culture and grow the cells.
- the processing of the computer 50 will be described based on FIG.
- Step 41 The wide-area cell image acquired by the macro imaging optical system 14 is stored in the storage memory 53 of FIG.
- the CPU 51 reads out the stored cell image and performs iPS cell colony identification processing based on the plurality of time-lapsed cell images.
- the iPS cell colony identification process includes a process of detecting the coordinate position (XY coordinate value) of the target cell based on the wide area image and a process of determining a noise component that is not of the target cell. For example, as described in the first embodiment, fluorescence may be read to identify an iPS cell colony, or in the case of non-invasive detection, an iPS cell colony is obtained from morphological information based on a phase difference observation image. May be specified.
- Candidate attention cells are identified based on a wide-area cell image. That is, the cells in the culture vessel include bubbles that become noise, dead cells, initial colony cells before cell colony formation, and the like.
- the bright field observation image for example, transmission observation image, phase difference observation image, observation image by oblique illumination
- the macro imaging optical system 14 is scattered in the culture vessel. Extract morphological information of individual cells. From the extracted morphological information of each cell, for example, cell area information, cell long side length information, circularity information, etc., cells that do not satisfy a predetermined condition are excluded from the candidates. In this way, iPS cell colonies in good condition can be included in the candidate cells.
- the above processing may be performed based on a wide-area cell image, and a cell that becomes noise may be specified as a candidate cell.
- the subsequent process is a process of leaving only cells that may pick up cells that cause noise. Therefore, in that case, the culture can be continued without using a new culture vessel.
- Step 42 A process of specifying a cell of interest (iPS cell colony) from the candidate cells specified in step 41 is executed.
- the coordinate position (XY coordinate value) of the cell of interest is obtained based on the wide area image, the observation stage 11 is driven based on the coordinate position, and the image of the cell of interest is acquired by the micro imaging optical system 18 (a plurality of cells of interest are If present, an image of each cell of interest is acquired). And the process which determines the growing state of an attention cell based on the acquired partial image (image of an attention cell) is made.
- fluorescence may be read to identify an iPS cell colony, or in the case of non-invasive detection, iPS cells are obtained from morphological information based on phase difference observation images. Colonies may be identified.
- a high-definition phase difference observation image acquired by the micro imaging optical system 18 is used.
- a known contour extraction process for example, binarization process or differentiation process
- the extracted contour line When the dispersion value of the brightness intensity of the cell image is determined to be lower than the predetermined dispersion value (recognized as a uniform cell colony), the iPS cell colony within the outline is regarded as a good cell. There is a way.
- steps 41 and 42 are set in advance in the observation schedule. For example, while time-lapse observation imaging is being performed, steps S41 and S42 are executed at predetermined time intervals, or predetermined processing is performed. Steps S41 and S42 are executed after the number of times of shooting has elapsed. This processing timing is set empirically based on the culture time of the iPS cell colony.
- Step 43 When the iPS cell colony that is the target cell is detected, the manipulator 20 is automatically controlled based on the macro image 58d and the micro image 58b as shown in FIG. Specifically, first, based on the image information of the macro image 58 d, the dark field image 22 ′ of the syringe reflected on the macro image is detected, and the coordinate system of the manipulator 20 is calculated by the manipulator coordinate detection means 22. And control which sets the coordinate position of the front-end
- the micro imaging optical system can catch the tip, so that precise control of the manipulator 20 is performed based on the image information of the micro image 58b. Since the image information of the micro image 58b is a higher definition image than the macro image 58d, the coordinate position (XYZ coordinate value) of the cell of interest and the coordinate position (XYZ coordinate value) of the tip of the syringe are in units of micrometers. Can be controlled.
- Step 44 The tip of the syringe approaches the target cell, and the target cell is picked up (sucked into the syringe).
- Step 45 The manipulator 20 is automatically controlled, and the picked-up target cell is seeded in the new culture vessel 103 of FIG. 11 and transferred.
- Step 46 A new culture vessel is transferred from the cell observation system 500 in FIG. 11 to the incubator 300 by the transfer robot 200 in FIG.
- the transfer robot 200 holds the new culture vessel 103 by the articulated transfer arm 210 and transfers the culture vessel 103 from the opening of the incubator 300 to the room where the environment is maintained.
- Step 47 The culture vessel 103 conveyed by the incubator 300 is maintained in an optimum environment for culturing iPS cell colonies and cultured for a predetermined period.
- An imaging device (such as a CCD camera) in the incubator 300 takes a time-lapse image of the culture vessel 103 and acquires an image of an iPS cell colony. Based on this image, the growth status of iPS cell colonies is sequentially analyzed.
- the iPS cell colonies cultured in the incubator 300 are sent again to the cell observation system 500 by the culture container transport robot 200 after a predetermined period. Then, as described above, the flowchart of FIG. 14 is repeatedly executed to analyze the state of cell growth, and cell culture is repeatedly executed. Thereby, only good iPS cell colonies can be grown.
- the number of partial areas that can be simultaneously specified as extraction source candidates is set to 1, but may be more than one.
- the computer 50 causes the user to designate one of the plurality of extraction source candidates being designated, and drives the observation stage 11 so that the newly designated extraction source candidate is arranged on the optical axis. That's fine.
- one oblique illumination optical system 15 is shared by the macro imaging optical system 14 and the micro imaging optical system 18.
- the oblique illumination optical system dedicated to the macro imaging optical system 14 and a micro A dedicated oblique illumination optical system may be used for the imaging optical system 18.
- at least one of the oblique illumination optical system of the macro imaging optical system 14 and the oblique illumination optical system of the micro imaging optical system 18 may be an incident dark field illumination optical system.
- the macro imaging optical system 14 and the micro imaging optical system 18 are disposed to face each other with the observation stage 11 interposed therebetween.
- the present invention is not limited to this, and for example, both imaging optical systems are on one side of the observation stage 11. May be arranged.
- the micro imaging optical system is disposed at the position of the macro imaging optical system 14 shown in FIG. 1, the macro imaging optical system is disposed at the position of the light shielding illumination optical system 15, and the micro imaging optical system is arranged. What is necessary is just to arrange
- the macro imaging optical system that acquires a wide-area image of the culture vessel is composed of a low-resolution CCD sensor
- the micro-imaging optical system that acquires a partial image in the wide-area image of the culture vessel is It consists of a high-resolution CCD sensor.
- the picking of the cells in the culture container has been described, but it is also useful when a predetermined drug is dropped on the cells.
- the computer 50 determines whether or not there is a picking completion notification based on the operation content of the manipulator controller 21. If the part is not motorized, the user must voluntarily input a picking completion notification.
- the picking completion notification is input via the keyboard 56, mouse 57, or an input device prepared separately. Alternatively, it is performed via a specific operation unit provided in the manipulator controller 21.
- the micro imaging optical system 18 of the above-described embodiment detects only one type of micro fluorescent image
- the micro imaging optical system 18 may be modified to simultaneously detect a plurality of types of micro fluorescent images having different wavelengths.
- the computer 50 creates a color micro-fluorescence image by synthesizing a plurality of types of micro-fluorescence images obtained by the micro-imaging optical system 18 with different colors, and processes the image as described above before displaying the display 58. Will be displayed.
- At least a part of the operation of the CPU 51 may be executed by the control circuit 52.
- the CPU 51 may cause at least a part of the operation of the control circuit 52 to be executed.
- the inverted microscope 10, the manipulator 20, and the accommodation stage 60 of the system of the above-described embodiment may be arranged inside the culture apparatus.
- the culture device is a device that maintains the surrounding environment (carbon dioxide concentration, temperature, humidity, etc.) of the culture vessel as set in advance.
- SYMBOLS 30 Culture container, 10 ... Inverted microscope, 20 ... Manipulator, 40 ... Container, 60 ... Storage stage, 21 ... Manipulator controller, 11 ... Observation stage, 18 ... Micro imaging optical system 18, 14 ... Macro imaging optical system, 15 ... oblique illumination optical system, 22 syringes ..., 12 ... stage controller
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Abstract
Description
以下、本発明の実施形態として細胞観察システムの実施形態を説明する。
以下、図11~図15を参照して本発明の実施形態として別の細胞観察システムの実施形態を説明する。なお、第2実施形態において、第1実施形態と同一符号の部材は構成、動作ともに第1実施形態と同じであるため説明を省略する。
次に、シリンジ22の先端の位置決め手順について図13に示すPC51のフローチャートを参照しつつ説明する。
δX’=X’1-X’0、
δY’=Y’1-Y’0、
δZ’=Z’1-Z’0、
としてそれぞれ演算され、移動量データ(δX’、δY’、δZ’)としてPC51のメモリに登録される(S6)。以上で初期設定作業を終了する。
図14は、細胞生産システムの構成図である。図14の細胞生産システムは、インキュベータ300と細胞観察システム103(第1実施形態又は第2実施形態のシステム)とを、培養容器搬送ロボット200にて連結されて構成されている。この細胞生産システムの存在する空間400は、一定の培養環境下に(温度、湿度、二酸化炭素などの培養環境条件を含む)、管理されている。
なお、上述した実施形態のシステムでは、抽出元候補として同時に指定可能な部分領域の個数を1としたが、複数としてもよい。その場合、コンピュータ50は、指定中の複数の抽出元候補の中の1つをユーザに改めて指定させ、改めて指定された抽出元候補が光軸上に配置されるように観察ステージ11を駆動すればよい。
Claims (22)
- 細胞の培養容器を支持する観察ステージと、
前記培養容器内の細胞を操作する操作針と前記培養容器内の細胞との位置関係を観察するために、前記観察ステージにおける前記培養容器の広域画像を取得するマクロ撮像光学系と、
前記培養容器内の細胞を操作する操作針と前記培養容器内の細胞との位置関係を観察するために、前記広域画像内の部分画像を取得するミクロ撮像光学系と、
前記培養容器内の細胞を操作する前記操作針を制御する制御手段とを備え、
前記ミクロ撮像光学系が前記観察ステージを挟み前記マクロ撮像光学系に対向する側に配置されたこと
を特徴とする細胞観察装置。 - 請求項1に記載の細胞観察装置において、
前記制御手段は、前記広域画像および前記部分画像に基づき、前記培養容器内の細胞をピッキングできる位置に前記操作針を制御すること
を特徴とする細胞観察装置。 - 請求項1に記載の細胞観察装置において、
前記制御手段は、前記広域画像の画像解析に基き前記培養容器内の細胞のうち注目すべき細胞である注目細胞を決定し、前記注目細胞の位置座標を算出して前記広域画像および前記部分画像に基き前記操作針を制御する
ことを特徴とする細胞観察装置。 - 請求項2又は請求項3に記載の細胞観察装置において、
前記制御手段は、前記操作針の制御に際して、前記広域画像に基づき操作対象の前記細胞の位置座標に移動し、前記部分画像に基き前記細胞の位置座標に前記操作針を合せ込む
ことを特徴とする細胞観察装置。 - 請求項1に記載の細胞観察装置において、
前記ミクロ撮像光学系と前記マクロ撮像光学系とは同軸に構成されている
ことを特徴とする細胞観察装置。 - 請求項1に記載の細胞観察装置において、
前記培養容器の底部側に前記ミクロ撮像光学系が配置されている
ことを特徴とする細胞観察装置。 - 請求項2に記載の細胞観察装置において、
前記制御手段は、前記部分画像に基づき、目的の細胞を前記培養容器からピッキングするように前記操作針を制御し、前記ピッキングされた前記目的の細胞を別の培養容器に播種する
ことを特徴とする細胞観察装置。 - 請求項7に記載の細胞観察装置を用いて細胞を培養する細胞培養方法であって、
前記ピッキングされた前記目的の細胞を前記別の培養容器に播種した後に、前記別の培養容器をインキュベータに搬送するステップと、
前記インキュベータにより一定期間、前記播種された前記目的の細胞を培養し、その後に前記別の培養容器を前記細胞観察装置に戻すステップと、
を繰り返すことにより前記目的の細胞の数を増やす
ことを特徴とする細胞培養方法。 - 請求項8に記載の細胞培養方法において、
前記目的とする細胞はiPS細胞である
ことを特徴とする細胞培養方法。 - 細胞の培養容器を支持する観察ステージと、
前記観察ステージにおける前記培養容器の広域画像を取得するマクロ撮像光学系と、
前記培養容器の部分画像を取得するミクロ撮像光学系と、
前記培養容器内の細胞を操作する操作針を制御する際には、前記マクロ撮像光学系によるマクロ画像の取得と、前記ミクロ撮像光学系によるミクロ画像の取得との双方を同時に行うように制御する制御手段と
を備えたことを特徴とする細胞観察装置。 - 請求項10に記載の細胞観察装置において、
前記マクロ撮像光学系及び前記ミクロ撮像光学系の光軸に対して非平行な照明光束で前記観察ステージ上の前記培養容器を照明する斜光照明光学系と、
を備えたことを特徴とする細胞観察装置。 - 請求項11に記載の細胞観察装置において、
前記制御手段は、
前記斜光照明光学系がオンされている期間に前記マクロ撮像光学系が取得するマクロ暗視野画像と、それと同じ期間に前記ミクロ撮像光学系が取得するミクロ暗視野画像との双方をリアルタイム表示する
ことを特徴とする細胞観察装置。 - 請求項12に記載の細胞観察装置において、
前記培養容器の細胞に励起光を照射する励起光照明光学系と、
前記励起光が照射された前記培養容器の各部から前記ミクロ撮像光学系を介してミクロ蛍光画像を取得し、それら各部の履歴を予め記憶する記憶手段を更に備え、
前記制御手段は、
前記培養容器のうち前記ミクロ撮像光学系の光軸上に位置する部分の履歴を前記記憶手段から読み出し、リアルタイム表示中のミクロ暗視野画像と共に表示する表示部を含む
ことを特徴とする細胞観察装置。 - 請求項13に記載の細胞観察装置において、
前記制御手段は、
前記履歴を動画像として表示する表示部を含む
ことを特徴とする細胞観察装置。 - 請求項13又は請求項14に記載の細胞観察装置において、
前記制御手段は、
前記培養容器の各部の最新のミクロ蛍光画像を前記記憶手段から読み出し、それらを繋ぎ合わせてなるガイド画像を、リアルタイム表示中のマクロ暗視野画像上へ重畳表示する表示部を含む
ことを特徴とする細胞観察装置。 - 請求項15に記載の細胞観察装置において、
前記制御手段は、
前記培養容器における操作対象候補が前記ガイド画像上で指定された場合には、その操作対象候補が前記ミクロ撮像光学系の光軸上に位置するよう前記観察ステージを自動調整する
ことを特徴とする細胞観察装置。 - 請求項15に記載の細胞観察装置において、
前記制御手段は、
前記培養容器における操作対象候補が前記ガイド画像上で指定され、かつその操作対象候補に対する操作の完了通知が入力された場合には、前記ガイド画像上の前記操作対象候補を強調表示する
ことを特徴とする細胞観察装置。 - 請求項14に記載の細胞観察装置において、
前記表示部は、前記広域画像および前記部分画像および前記動画像を同時に表示する
ことを特徴とする細胞観察装置。 - 請求項14に記載の細胞観察装置において、
前記表示部に表示された前記広域画像から所望する細胞が指定されると、前記指定された細胞の前記動画像が表示される
ことを特徴とする細胞観察装置。 - 細胞を培養する細胞培養方法において、
培養中の前記細胞を収容している培養容器をマクロ観察し、広域画像を取得するマクロ撮像ステップと、
前記広域画像から前記細胞の位置を特定し、前記細胞をミクロ観察し、前記広域画像内の部分画像を取得するミクロ撮像ステップと、
前記部分画像に基き前記細胞の状態を判定する判定ステップと、
前記判定ステップで前記細胞の状態を判定した結果、良好な細胞を前記培養容器からピッキングするために、前記広域画像および前記部分画像に基づき操作針を制御するピッキングステップと、
前記操作針にてピッキングされた前記良好な細胞を前記別の培養容器に播種した後に、前記別の培養容器をインキュベータに搬送するステップと、
前記インキュベータにより一定期間、前記播種された前記良好な細胞を培養する培養ステップとを有し、
上記ステップを繰り返すことにより前記良好な細胞の数を増やす
ことを特徴とする細胞培養方法。 - 請求項20に記載の細胞培養方法において、
前記ピッキングステップでは、前記マクロ撮像ステップにて得られた前記広域画像に基づき、前記操作針のXY座標位置を前記細胞のXY座標位置に一致させ、前記ミクロ撮像ステップにて得られた前記部分画像に基づき、前記操作針を前記細胞のXYZ座標位置に向けて駆動し、前記操作針にて前記細胞をピッキングする
ことを特徴とする細胞培養方法。 - 請求項20に記載の細胞培養方法において、
前記細胞はiPS細胞である
ことを特徴とする細胞培養方法。
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Also Published As
| Publication number | Publication date |
|---|---|
| JP5510463B2 (ja) | 2014-06-04 |
| US20130027539A1 (en) | 2013-01-31 |
| CN102712890B (zh) | 2016-03-30 |
| US8947518B2 (en) | 2015-02-03 |
| CN102712890A (zh) | 2012-10-03 |
| JPWO2011089908A1 (ja) | 2013-05-23 |
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