WO1992000315A1 - Procede de fonctionnalisation d'un oligonucleotide - Google Patents
Procede de fonctionnalisation d'un oligonucleotide Download PDFInfo
- Publication number
- WO1992000315A1 WO1992000315A1 PCT/FR1991/000503 FR9100503W WO9200315A1 WO 1992000315 A1 WO1992000315 A1 WO 1992000315A1 FR 9100503 W FR9100503 W FR 9100503W WO 9200315 A1 WO9200315 A1 WO 9200315A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- oligonucleotide
- formula
- amino
- dideoxynucleotide
- rnh
- Prior art date
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- 0 C*C1CC2c3c(C)c(C=NCC4)c4c(C)c3*C2CC1 Chemical compound C*C1CC2c3c(C)c(C=NCC4)c4c(C)c3*C2CC1 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
- C07H21/00—Compounds containing two or more mononucleotide units having separate phosphate or polyphosphate groups linked by saccharide radicals of nucleoside groups, e.g. nucleic acids
Definitions
- the present invention relates to the process for functionalizing an oligonucleotide at its 5 ′ OH end with an amino effector.
- the present invention also relates to a synthon useful in the process consisting of a phosphoramidite derivative of didesoxynucleoside.
- the synthesis of oligonucleotides linked covalently to various effector agents is of considerable interest due to the massive use in biochemistry and molecular biology of these molecules and their use as potential therapeutic agents.
- Richterich, Nucleic Acids Res. , 17, 2181-2185, 1989 can be easily detected respectively by very sensitive fluorometric or enzymatic and colorimetric methods. These compounds can be used as cold molecular probes and advantageously replace radioactive probes.
- oligonucleotides linked to reactive groups which can be chemically activated (CB Chen and DS Sigman, Proc. Natl. A cad. Sci. USA, 83, 7147-7151; T. Le Doan et al., Nucleic Acids Res., JL5, 8643-8659, 1987; 3. C. Institut et al., Biochemistry, 27, 2272-2276, 1988;
- oligonucleotide is understood to mean both oligodeoxynucleotides, that is to say in DNA series, and oligoribonucleotides, that is to say in RNA series.
- oligonucleotide is also understood to mean oligonucleotides with an anomeric beta configuration or with an unnatural anomeric configuration alpha.
- nucleotides constituting the oligonucleotide ' can be true nucleotides, that is to say with a phosphate 5' to the corresponding nucleoside or derivatives, among others, of the phosphorothiorate, methylphosphonate type, as will be seen more far.
- effector means a radical corresponding to an intercalating agent also called an intercalating agent, or a chemical or photbactivable radical such as a radical carrying a function reacting directly or indirectly with the nucleotide chains or a radical whose presence allows easy and sensitive detection.
- the article by Stein et al Gene 72 (1988) 333-341 relates to a conventional method of functionalization of an oligonucleotide, in this case it is acridine (ACr).
- the oligonucleotide chain can then only contain pyrimidine nucleosides taking into account the fact that dC and dT are much less sensitive to acid hydrolysis than dA or dG. In other words, it is therefore not possible, by this method, to functionalize, by amino effectors, the oligodeoxyribonucleotides consisting solely of pyrimidine nucleo ⁇ sides.
- the present invention provides a general method for forming an abasic site at the 5'OH end of an oligonucleotide (both in DNA series and in RNA series) synthesized on a solid support and this time comprising, if appropriate, all the usual bases (A, C, G, T or U) of DNA and RNA as well as the modified bases.
- This original method thus makes it possible to functionalize oligonucleotides of any sequence by amino effectors.
- the functionalization method according to the invention has the essential characteristic of using didesoxyribonucleosides and allows, via automated synthesis on a solid support, to functionalize oligonucleotides of any sequence at their 5'OH end.
- the subject of the present invention is a process for functionalizing an oligonucleotide at its 5'OH end with an amino effector agent of formula RNH- characterized in that it comprises the following steps: a) said oligonucleotide is synthesized b) a dideoxynucleotide is assembled on the 5'OH end of said oligonucleotide via the 5 'end of the latter, c) a covalent coupling of said oligonucleotide with said amino reagent RNH is carried out by a reductive amination reaction between said amino reagent and an aldehyde function at the 5′OH end of the oligonucleotide originating from the opening by acid hydrolysis of the glycosidic
- the present invention therefore provides a new approach for forming an abasic dideoxyribose site at the 5'OH end of an oligomer which may contain any bases, regardless of the oligonucleotide series considered (natural or modified). These abasic oligonucleotides are not isolated because they easily and quantitatively lead to their derivatized form after reductive amination with amino effectors.
- the synthesis of the oligonucleotide is an assembly synthesis with phosphoramidite on solid support in the last step of which a 5-point phosphoramidite derivative is used 'of the dideoxy-nucleoside corresponding to the dideoxynucleotide which is assembled by an additional synthesis cycle at the 5' end of said oligonucleotide. It appears that the phosphoramidite derivatives of didesoxy ⁇ nucleosides according to the invention are much more sensitive to acid hydrolysis than the corresponding didesoxyribonucleosides or ribonucleosides.
- dideoxynucleoside derivatives of nebularin hydrolyze more readily.
- the same applies to other derivatives of didesoxy ⁇ nucleosides in particular, corresponding hydrogen phosphonate derivatives of formula:
- a solid phase process according to the phosphora ⁇ midite method comprises the following essential steps: - A 5 'protected nucleoside derivative is immobilized, via one of its hydroxyl functions in 2 * or 3' on a support solid,
- the oligobonucleotide chain protected by condensation of monomers consisting of nucleosides protected in 5 ′ and 2 ′ and substituted by phosphoramidite groups in 3 ′ is assembled on this support in a manual or automatic synthesizing reactor.
- the oligonucleotides are obtained after detaching from the support of the oligomer obtained and elimination of the protective groups.
- the oligonucleotide is assembled by condensation, in the presence of an activating agent, of said monomers between their 3 ′ function and the 5 ′ hydroxyl function of the nucleoside compound immobilized for the first monomer or of a compound protected polynucleotide intermediate attached to said immobilized nucleoside compound for the following monomers.
- the activating agent for the condensation of said monomers can be chosen from tetrazole and its derivatives, such as paranitro-phenyi tetrazole.
- step c) the compound consisting of said oligonucleotide is detached from the solid support at the 5 ′ end of which said dideoxynucleotide is assembled and eliminates protecting groups.
- the reductive amination reaction in step c) can be carried out, for example, by treatment with sodium cyanoborohyride in an acid medium.
- R. and R- represent an optionally substituted C 1 -C 4 alkyl, such as CH ,, CH- (CH,) 2 or R. + R_ together form a morpholino group
- R represents a C alkyl. to C7 optionally substituted in particular nt CH 3 orCH 2 -CH 2 CN
- - B represents a nucleic acid base in particular, adenine, guanine or nebularine.
- nucleic acid base B it is indeed preferable to choose, adenine, guanine or nebularin, taking into account their ease of acid hydrolysis, compared to the other nucleic acid bases.
- a phosphoramidite derivative of formula I in which B represents nebularin is a phosphoramidite derivative of formula I in which B represents nebularin.
- the originality and the interest of the approach according to the invention resides in the use during the last stage of the oligonucleotide synthesis on solid support of the same phosphoramidite derivative of dideoxynucleoside whatever the effector agent than the we want to introduce.
- the phosphoramidite derivative of dideoxynucleoside after opening of the deoxy-sugar cycle, provides the "linker" between the oligonucleotide proper and the effector.
- RNH is the monovalent residue of the amino effector RNH_
- radicals B may be identical or different from each other and each represent a base of an optionally modified nucleic acid attached to the glycosidic cycle according to an alpha or beta anomeric configuration
- radicals X may be identical to or different from each other and represent an oxoanion O, a thioanion S " , an alkyl group, an aicoxy group, aryioxy, an aminoalkyl group, aminoalkoxy, thioaikyle,
- n is between 1 and 50. 10
- effector radicals of formula RNH- according to the invention correspond to effector agents which are compounds known in the techniques relating to nucleic acids. These are, for example, compounds capable of "intercalating" in the structure of DNAs or RNAs.
- intercalating agents are, in general, constituted by polycyclic compounds having a planar configuration such as acridine, furocoumarin, daunomycin, 1,10-phenanthroiine, phenanthridinium, prophyrins, derivatives of the dipyrido (1,2-a: 3 ', 2'-d) imidazole, ellipticine or ellipticinium or their derivatives containing a function
- effector agents can also be reactive chemical radicals such as chemical cleavage radicals, that is to say that these radicals can directly or indirectly react to split a chain of nucleotides.
- these reactive chemical radicals will be activatable, for example chemically or photochemically.
- the activatable cleavage reactive groups are, for example, derivatives of compounds such as: ethylene diamine-tetracetic acid, 1 1
- diethylene-triamine-pentaacetic acid diethylene-triamine-pentaacetic acid, porphyrins, 1,10-phenanthroline, psoraiene and other aromatic groups absorbing near UV and visible radiation.
- the RNH residue of the effector agent can represent:
- R. representing an amino (NH_) or azido (N,) group
- B preferably represents adenine, guanine or nebularine.
- EXAMPLE 1 Use of dideoxy ⁇ nucleoside phosphoramidite in order to create an abasic site (residue 2 ', 3' didesoxyribose 5 'from an oligonu ⁇
- the corresponding oligomer is obtained after deprotection according to the usual methods then optionally purified by HPLC. Treatment in an acid medium (30 mM HCL, 37 °, 12 to 15 min) leads to the selective hydrolysis of the dideoxynébularine residue and thus to the formation of a dideoxyribose end 5 ′ of the oligomer, ie 3.
- the reductive amination reaction in step c) of the process according to the invention is carried out by a sodium cyanoborohydride treatment in an acid medium.
- the organic phase is dried over sodium sulfate, filtered and evaporated to dryness under reduced pressure.
- the residue obtained is chromatographed on a column of silica gel and the elution takes place with mixtures of cyclohexane, dichioromethane and triethylamine (90/9/1 to 30/69/1, v / v / v).
- the fractions containing the desired pure product are combined, evaporated to dryness and the residue redissolved in dioxane is subjected to lyophilization.
- a colorless powder is obtained (345.3 mg, 44% yield).
- N, N-diisopropylaminomethoxyphosphine (0.35 ml, 1.8 mm geese). The mixture is stirred for 30 minutes at room temperature, under an argon atmosphere, then poured into a separatory funnel containing ethyl acetate (40 ml). The resulting solution is washed with brine
- EXAMPLE 4 Synthesis of oligonucleotides comprising the dideoxynébularine at their 5 ′ end on solid support by the so-called phosphorami ⁇ method.
- Dideoxynébularine is incorporated in the final stage of synthesis of oligonucleotides prepared on the scale of one ⁇ mol in a conventional manner according to the methods described in the literature (for example method with cyanoethylphosphoroamidite for oiigodeoxyribonucleotides of beta configuration, method with methyiphosphoroamidite for alpha-configuration oligodeoxyribonucleotides: F. Morvan, B. Rayner,
- the coupling cycle of the methyiphosphoroamidite synthon of ddN is that used in the methyiphosphoroamidite method (reference above). At the end of this cycle, the detritylation step is omitted.
- capping is carried out by NH ⁇ OH 32% for 16 hours at 55 °.
- NH ⁇ OH 32% for 16 hours at 55 °.
- oiodeodesribribucleotides only treatments with NH. OH are used.
- the amount of functionalized oligonucleotide obtained is 29 absorbance units at 260 nm.
- the spectrophotometric purity of this compound is 99% at this same wavelength.
- EXAMPLE 6 Functionalization with amino-9 ellipticine at the 5'OH end of a ⁇ oligonucleotide directed against the splicing site of the tat gene of the HIV 1 virus.
- O 0 C H- (CH 2 ) 2 -CHOH-CH 2 0-P-0 ⁇ d 5 '(ACA CCC AAT TCT) 3 ' 21
- HPLC conditions used injection 10 ⁇ i Beckman XLODS C column. Plate3 ⁇ linear gradient from a 0.1 M ammonium acetate buffer solution at pH 5.9 to a 20% acetonitrile solution in the same buffer in 20 min at a flow rate of 1 ml per min.
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Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR90/08008 | 1990-06-26 | ||
FR9008008A FR2663636B1 (fr) | 1990-06-26 | 1990-06-26 | Procede de fonctionnalisation d'un oligonucleotide. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1992000315A1 true WO1992000315A1 (fr) | 1992-01-09 |
Family
ID=9398008
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1991/000503 WO1992000315A1 (fr) | 1990-06-26 | 1991-06-24 | Procede de fonctionnalisation d'un oligonucleotide |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0487694A1 (fr) |
JP (1) | JPH05501418A (fr) |
FR (1) | FR2663636B1 (fr) |
WO (1) | WO1992000315A1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5990093A (en) * | 1993-09-10 | 1999-11-23 | Emory University | Treating HBV with phospholipid prodrugs of β-L-2',3'-dideoxyadenosine 5'-monophosphate |
US6245749B1 (en) | 1994-10-07 | 2001-06-12 | Emory University | Nucleosides with anti-hepatitis B virus activity |
US7439351B2 (en) | 1993-09-10 | 2008-10-21 | The Uab Research Foundation | 2′ or 3′ -deoxy and 2′, 3′-dideoxy-β-L-pentofuranonucleo-side compounds, method of preparation and application in therapy, especially as anti-viral agents |
US7857868B2 (en) | 2004-05-17 | 2010-12-28 | Lg Chem, Ltd. | Electrode and method for preparing the same using substrate induced coagulation (SIC) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1986000074A1 (fr) * | 1984-06-15 | 1986-01-03 | Institut National De La Sante Et De La Recherche M | Acides nucleiques marques chimiquement, leur utilisation et necessaire pour sa mise en oeuvre |
WO1986005789A1 (fr) * | 1985-04-01 | 1986-10-09 | Biocarb Ab | Derives d'hydrates de carbone et leurs compositions pour usage diagnostique ou therapeutique, et leurs procede d'utilisation |
EP0212546A2 (fr) * | 1985-08-13 | 1987-03-04 | Enzo Biochem, Inc. | Procédé pour l'étiquetage des séquences polynucléotidiques |
-
1990
- 1990-06-26 FR FR9008008A patent/FR2663636B1/fr not_active Expired - Lifetime
-
1991
- 1991-06-24 JP JP3511114A patent/JPH05501418A/ja active Pending
- 1991-06-24 EP EP19910911921 patent/EP0487694A1/fr not_active Withdrawn
- 1991-06-24 WO PCT/FR1991/000503 patent/WO1992000315A1/fr not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1986000074A1 (fr) * | 1984-06-15 | 1986-01-03 | Institut National De La Sante Et De La Recherche M | Acides nucleiques marques chimiquement, leur utilisation et necessaire pour sa mise en oeuvre |
WO1986005789A1 (fr) * | 1985-04-01 | 1986-10-09 | Biocarb Ab | Derives d'hydrates de carbone et leurs compositions pour usage diagnostique ou therapeutique, et leurs procede d'utilisation |
EP0212546A2 (fr) * | 1985-08-13 | 1987-03-04 | Enzo Biochem, Inc. | Procédé pour l'étiquetage des séquences polynucléotidiques |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5990093A (en) * | 1993-09-10 | 1999-11-23 | Emory University | Treating HBV with phospholipid prodrugs of β-L-2',3'-dideoxyadenosine 5'-monophosphate |
US6525033B1 (en) | 1993-09-10 | 2003-02-25 | Emory University | Nucleosides with anti-hepatitis B virus activity |
US7439351B2 (en) | 1993-09-10 | 2008-10-21 | The Uab Research Foundation | 2′ or 3′ -deoxy and 2′, 3′-dideoxy-β-L-pentofuranonucleo-side compounds, method of preparation and application in therapy, especially as anti-viral agents |
US6245749B1 (en) | 1994-10-07 | 2001-06-12 | Emory University | Nucleosides with anti-hepatitis B virus activity |
US7468357B2 (en) | 1994-10-07 | 2008-12-23 | Emory University | Nucleosides with anti-hepatitis B virus activity |
US7857868B2 (en) | 2004-05-17 | 2010-12-28 | Lg Chem, Ltd. | Electrode and method for preparing the same using substrate induced coagulation (SIC) |
Also Published As
Publication number | Publication date |
---|---|
FR2663636B1 (fr) | 1992-10-09 |
FR2663636A1 (fr) | 1991-12-27 |
JPH05501418A (ja) | 1993-03-18 |
EP0487694A1 (fr) | 1992-06-03 |
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