CN108864307A - 信号肽优化靶向cd19的嵌合抗原受体、表达该嵌合抗原受体的t细胞及制备方法和应用 - Google Patents
信号肽优化靶向cd19的嵌合抗原受体、表达该嵌合抗原受体的t细胞及制备方法和应用 Download PDFInfo
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Abstract
本发明公开了一种信号肽优化靶向CD19的嵌合抗原受体、表达该嵌合抗原受体的T细胞及制备方法和应用,所述信号肽优化靶向CD19的嵌合抗原受体包含顺序串联的跨膜蛋白信号肽、抗CD19抗体单链可变区、CD8蛋白分子的铰链区、跨膜区、4‑1BB共刺激结构域与CD3ζ胞内信号传导结构域,其中,所述跨膜蛋白信号肽的氨基酸序列如SEQ ID No.1或SEQ ID No.2或SEQ ID No.3所示,该嵌合抗原受体的氨基酸序列如SEQ ID No.11或SEQ ID No.12或SEQ ID No.13所示,该靶向CD19的嵌合抗原受体在T细胞中更加高效、稳定表达,以更好地发挥对靶细胞的杀伤作用。
Description
技术领域
本发明是关于免疫学与分子生物学技术领域,特别是关于一种信号肽优化靶向CD19的嵌合抗原受体、表达该嵌合抗原受体的T细胞及制备方法和应用。
背景技术
过继性免疫细胞治疗(adoptive cell therapy,ACT)是指从肿瘤患者分离免疫活性细胞,在体外进行扩增与功能鉴定后,然后再回输给患者,从而直接杀伤肿瘤或激发机体的免疫应答杀伤肿瘤细胞。
免疫治疗(Immunotherapy)是继手术、放疗、化疗之后的第四种肿瘤治疗方法。嵌合抗原受体(chimeric antigen receptor,CAR)T细胞技术是新近迅速发展的一种细胞免疫治疗技术,CAR是一个人工合成的融合受体,在结构上包括胞外抗原结合区、跨膜区、胞内信号转导区与共刺激信号区。胞外区为识别肿瘤相关抗原的单克隆抗体可变区序列(single chain variable fragment,ScFV),跨膜区连接胞外区与胞内区,常用的跨膜区分子有CD3、CD4、CD8与CD28等,胞内区具有免疫受体酪氨酸活化基序(ITAM),最常用的是T细胞受体TCR/CD3ζ链和免疫球蛋白FC受体FCεRIγ,主要负责信号转导功能;人们通过分子克隆方法将上述元件在体外进行重组,形成重组质粒,通过病毒载体、电穿孔等手段将重组质粒转导入T细胞,继之在体外培养扩增,最后回输到病人体内,起到治疗肿瘤的目的,这种经过基因修饰与改造的T细胞即称为CAR-T细胞。CAR-T细胞通过ScFV段识别并结合肿瘤抗原,再通过CD3ζ链和共刺激信号区激活T细胞,这样改造的CAR-T细胞识别、杀伤肿瘤细胞就具有了两大特点:①靶向性;②克服了MHC限制性,即不再依赖MHC,因此突破了肿瘤细胞通过下调MHC的表达而发生免疫逃逸这一难题。
鉴于CAR-T技术的优势,近年来该技术发展迅猛。2017年8月31日,诺华(Novartis)公司突破性CAR-T细胞疗法Kymriah(tisagenlecleucel,曾用名CTL019)获得FDA批准上市,这是人类历史上首款CAR-T细胞疗法,适应症是急性B淋巴细胞白血病(B-ALL)的25岁以下患者。2017年10月18日,美国FDA批准了Kite Pharma的CAR-T疗法Yescarta(axicabtageneciloleucel)上市,适应症是特定类型的非霍奇金淋巴瘤。
信号肽是指引导新合成的肽链跨越细胞膜的一小段多肽,一般由15-30个氨基酸残基组成,位于新合成肽链的N端。它不仅能引导分泌蛋白或膜蛋白出胞,还能引导蛋白质在细胞内不同区域进行正确定位。信号肽在外源蛋白的表达中起重要作用,选择合适的信号肽能够促进重组蛋白的表达。
嵌合抗原受体是跨膜蛋白,当它在T细胞中表达后,依赖于胞外的ScFV段识别靶抗原。已经有文献报道信号肽可影响CAR的表达,Seogkyoung等在构建IL13R CAR-T的过程中发现,以VHCAMP的信号肽作为CAR的信号肽,CAR的表达量为78.8%,以hIL3信号肽作为CAR的信号肽,CAR的表达量为14.9%,说明信号肽的选择对CAR的构建至关重要。
公开于该背景技术部分的信息仅仅旨在增加对本发明的总体背景的理解,而不应当被视为承认或以任何形式暗示该信息构成已为本领域一般技术人员所公知的现有技术。
发明内容
本发明的目的在于提供一种信号肽优化靶向CD19的嵌合抗原受体、表达该嵌合抗原受体的T细胞及制备方法和应用,其能够使得靶向CD19的嵌合抗原受体在T细胞中更加高效、稳定表达,以更好地发挥对靶细胞的杀伤作用。
为实现上述目的,本发明提供了一种信号肽优化靶向CD19的嵌合抗原受体,所述嵌合抗原受体包含顺序串联的跨膜蛋白信号肽、抗CD19抗体单链可变区、CD8蛋白分子的铰链区、跨膜区、4-1BB共刺激结构域与CD3ζ胞内信号传导结构域,其中,所述嵌合抗原受体的N-端以跨膜蛋白信号肽与抗CD19抗体单链可变区的重链可变区相连接,该跨膜蛋白信号肽的氨基酸序列如SEQ ID No.1或SEQ ID No.2或SEQ ID No.3所示,该嵌合抗原受体的氨基酸序列如SEQ ID No.11或SEQ ID No.12或SEQ ID No.13所示,其中,分别包含跨膜蛋白信号肽氨基酸序列SEQ ID No.1、SEQ ID No.2和SEQ ID No.3的嵌合抗原受体的氨基酸序列依次对应于SEQ ID No.11、SEQ ID No.12和SEQ ID No.13,即在跨膜蛋白信号肽的氨基酸序列如SEQ ID No.1所示时,所述嵌合抗原受体的氨基酸序列如SEQ ID No.11所示;在跨膜蛋白信号肽的氨基酸序列如SEQ ID No.2所示时,所述嵌合抗原受体的氨基酸序列如SEQID No.12所示;在跨膜蛋白信号肽的氨基酸序列如SEQ ID No.3所示时,所述嵌合抗原受体的氨基酸序列如SEQ ID No.13所示。
本发明选取了上述三种跨膜蛋白信号肽(CD8信号肽(SEQ ID No.1)、GM-CSFR信号肽(SEQ ID No.2)与免疫球蛋白轻链К信号肽(SEQ ID No.3)),对靶向CD19的抗原受体序列进行了优化,以使CD19 CAR(即,靶向CD19的抗原受体)在T细胞中更加稳定高效表达,进而更好地发挥对靶细胞的杀伤作用。
在一优选的实施方式中,所述抗CD19抗体单链可变区的轻链可变区的氨基酸序列如SEQ ID No.4所示,重链可变区的氨基酸序列如SEQ ID No.5所示,轻重链之间的连接区的氨基酸序列如SEQ ID No.6所示;所述CD8蛋白分子的铰链区的氨基酸序列如SEQ IDNo.7所示。
在一优选的实施方式中,所述嵌合抗原受体的跨膜区的氨基酸序列如SEQ IDNo.8所示,所述4-1BB共刺激结构域的氨基酸序列如SEQ ID No.9所示,所述CD3ζ胞内信号传导结构域的氨基酸序列如SEQ ID No.10所示。
本发明还提供了表达上述嵌合抗原受体的T细胞。
本发明还提供了上述T细胞的制备方法,包括以下步骤:(1)靶向CD19的嵌合抗原受体慢病毒载体的获得;(2)靶向CD19的嵌合抗原受体慢病毒的制备及效价测定;(3)进而用步骤(2)制备好的靶向CD19的嵌合抗原受体慢病毒感染T细胞,以完成靶向CD19的嵌合抗原受体T细胞制备。
在一优选的实施方式中,所述靶向CD19的嵌合抗原受体慢病毒载体的获得包括以下步骤:(1)合成靶向CD19的嵌合抗原受体的基因序列:合成跨膜蛋白信号肽、抗CD19抗体单链可变区、CD8蛋白分子的铰链区、跨膜区、4-1BB共刺激结构域与CD3ζ胞内信号传导结构域的基因序列;(2)构建表达嵌合抗原受体的慢病毒载体。
在一优选的实施方式中,上述步骤(1)中所述嵌合抗原受体的基因序列如SEQ IDNo.22或SEQ ID No.23或SEQ ID No.24所示。
在一优选的实施方式中,所述靶向CD19的嵌合抗原受体慢病毒制备及效价测定包括以下步骤:(1)第0天铺板:0.25%胰酶消化293T细胞,铺在含有10ml DMEM(含有10%FBS)的10cm培养皿中,于37℃,5%CO2恒温培养箱培养,保证24h后细胞汇合度达到90-95%;(2)293T细胞转染:转染前2小时,将293T细胞换液,将靶向CD19的嵌合抗原受体慢病毒载体以及辅助载体与PEI混合,吹打均匀,室温静置13-17min,得到DNA/PEI混合物,将制备好的DNA/PEI混合物逐滴加到293T细胞中,继续培养4-6小时,换液;(3)靶向CD19的嵌合抗原受体慢病毒制备:分别收集上述293T细胞转染24小时与48小时的细胞上清,0.45μM滤器过滤后,20,000rpm,4℃,超速离心,用PBS溶解病毒沉淀,-80℃冻存病毒沉淀,待用;(4)慢病毒效价测定:将293T细胞铺于24孔板,1×105/孔,分别将0.25μL、0.5μL、1μL、3μL、10μL慢病毒悬液感染293T细胞,48小时后,收集细胞,流式免疫荧光染色,按照公式105×[GFP阳性细胞数/病毒体积(ml)×1/100],计算CAR-T19慢病毒效价。
在一优选的实施方式中,将靶向CD19的嵌合抗原受体慢病毒感染T细胞,以完成靶向CD19的嵌合抗原受体T细胞制备包括以下步骤:(1)将血液转至离心管,用等体积的1640基础培养基稀释2倍,混合均匀;(2)将4ml Ficoll淋巴细胞分离液转移到新的离心管,将2倍体积上述稀释好的血液轻轻加到Ficoll淋巴细胞分离液上面;(3)室温,水平离心15-25min;(4)用吸管轻轻吸取白膜层,即淋巴细胞层,用PBS洗涤三次后,转移到细胞培养皿,加入300U/ml的IL-2、1μg/ml的CD3抗体与1μg/ml的CD28抗体,活化24-48h;(5)将靶向CD19的嵌合抗原受体的慢病毒加到细胞中,6-10h后换液,继续培养2-4天;(6)流式免疫荧光染色检测CAR 19的表达情况,以明确感染效率,若感染效率在20%以上,说明CAR-T细胞转导成功,继续培养7-10天,得到足够回输的CAR-T细胞数量,成功完成靶向CD19嵌合抗原受体T细胞制备。
上述嵌合抗原受体或表达该嵌合抗原受体的T细胞在制备治疗血液恶性肿瘤或淋巴瘤的药物或制剂中的应用。
与现有技术相比,本发明具有如下有益效果:
T细胞是一种较难转导的细胞,慢病毒转导技术的出现虽然在一定程度上克服了这一难题,但由于肿瘤病人的T细胞与正常人T细胞状态有所不同,所以在基因编辑修饰T细胞的肿瘤免疫治疗中,仍然存在着因个体差异不同,某些病人T细胞转导效率低的情况。而嵌合抗原受体T细胞治疗的关键之一就是要把嵌合抗原受体T细胞成功转导入T细胞,并且要求其在T细胞表面表达稳定、持久,从而与靶细胞表面的抗原结合,发挥杀伤靶细胞效应。所以从不同角度进行优化,实现嵌合抗原受体在T细胞的稳定表达是一个非常重要的问题。在本发明中,CD19嵌合抗原受体序列经过信号肽优化后,在T细胞中表达更加稳定、高效,如图1流式免疫荧光染色所示,优化信号肽后,CAR19的表达效率得到了较大程度的提高,最大能提高1.37倍,从而可能对CD19阳性B细胞白血病与淋巴瘤起到更加良好的治疗效果。
附图说明
图1是根据本发明一实施方式的CD19 CAR在T细胞中的表达情况;
图2是根据本发明一实施方式的CD19 CAR对靶细胞的杀伤作用。
具体实施方式
下面结合附图,对本发明的具体实施方式进行详细描述,但应当理解本发明的保护范围并不受具体实施方式的限制。
除非另有其它明确表示,否则在整个说明书和权利要求书中,术语“包括”或其变换如“包含”或“包括有”等等将被理解为包括所陈述的元件或组成部分,而并未排除其它元件或其它组成部分。
下述实施例中所使用的实验方法如无特殊说明,均为常规方法。
下述实施例中所用的材料、试剂等,如无特殊说明,均可从商业途径可购得。
实施例1靶向CD19的嵌合抗原受体慢病毒载体的获得
(1)合成靶向CD19的嵌合抗原受体的基因序列:合成跨膜蛋白信号肽、抗CD19抗体单链可变区、CD8蛋白分子的铰链区、跨膜区、4-1BB共刺激结构域与CD3ζ胞内信号传导结构域的基因序列,并在5'端加EcoRI酶切位点,在3'端加SalI酶切位点;其中跨膜蛋白信号肽的核苷酸序列如SEQ ID NO.14、SEQ ID NO.15、SEQ ID NO.16所示,所述抗CD19抗体单链可变区的核苷酸序列如SEQ ID NO.17所示,所述CD8蛋白分子的铰链区的核苷酸序列如SEQID NO.18所示,所述跨膜区的核苷酸序列如SEQ ID NO.19示,所述4-1BB共刺激结构域的核苷酸序列如SEQ ID NO.20所示,所述CD3ζ胞内信号传导结构域的核苷酸序列如SEQ IDNO.21所示,最终合成的抗CD19的嵌合抗原受体的核苷酸序列如SEQ ID NO.22、SEQ IDNO.23、SEQ ID NO.24所示;
(2)以EcoRI与SalI两个酶切位点酶切后克隆入慢病毒载体,测序、鉴定,将测序验证正确的慢病毒载体转化感受态细胞Stbl3,用无内毒素质粒大提试剂盒进行质粒的大量抽提,利用分光光度计进行质粒定量,然后分装,-20℃冻存。
实施例2靶向CD19的嵌合抗原受体慢病毒的制备及效价测定
材料:293T细胞在含10%FBS的DMEM培养基中培养,耗材包括DMEM(Hyclone,SH30022.01)、X-VIVO 15(Lonza,04-418Q)、FBS(Gibcol,P30-3302)、胰酶(Gibco,25200-056)、PBS(Hyclone,SH30256.01)、PEI(聚乙烯亚胺)(24765-2)、CAR-T 19染色试剂盒(上海近岸生物科技有限公司),具体流程如下:
(1)第0天铺板:0.25%胰酶消化293T细胞,铺在含有10ml DMEM(含有10%FBS)的10cm培养皿中,37度,5%CO2恒温培养箱培养,保证24后细胞汇合度达到90-95%。
(2)293T细胞转染:转染前2小时,293T细胞换液。将靶向CD19嵌合抗原受体慢病毒载体以及辅助载体与PEI混合,吹打均匀,室温静置15min,得到DNA/PEI混合物。将制备好的DNA/PEI混合物逐滴加到293细胞中,继续培养4-6小时,换液。
(3)靶向CD19的嵌合抗原受体慢病毒制备:分别收集上述293T细胞转染24小时与48小时的细胞上清,0.45μM滤器过滤后,20,000rpm,4度,超速离心,用PBS溶解病毒沉淀,-80℃冻存病毒沉淀,待用。
(4)慢病毒效价测定:将293T细胞铺于24孔板,1×105/孔,分别将0.25μL、0.5μL、1μL、3μL、10μL慢病毒悬液感染293T细胞,48小时后,收集细胞,流式免疫荧光染色,按照公式105×[GFP阳性细胞数/病毒体积(ml)×1/100],计算CAR-T19慢病毒效价,待CAR-T19慢病毒效价达到8×108/ml,即可进行下一步试验。
实施例3靶向CD19的嵌合抗原受体T细胞制备
将4毫升室温Ficoll淋巴细胞分离液加入15毫升离心管,用10毫升移液管将8毫升1640培养基等体积稀释的外周血PBMC加到淋巴细胞分离液上面,2000rpm,水平,室温、离心20分钟,用3毫升吸管轻轻吸取白膜细胞层,将之转移到新的15毫升离心管,用10倍体积的PBS洗3次,用X-VIVO15培养基重悬细胞,进行细胞计数,调整细胞浓度为1×106/毫升,吸取2毫升淋巴细胞悬液,转移到6孔板,加入300U/ml的IL-2、1μg/ml的CD3抗体与1μg/ml的CD28抗体,活化T细胞24-48h,T细胞活化后,制备好的慢病毒以Moi1.25的比例感染T细胞,感染72小时后,利用CAR-T 19染色试剂盒进行流式免疫荧光染色,分析CAR-T 19的感染效率,分析含有哪种信号肽的CAR表达最强、最稳定,若感染效率在20%以上,则说明CAR-T细胞转导成功,继续培养扩增7-10天,获得足够回输的CAR-T细胞数量,成功完成靶向CD19的嵌合抗原受体T细胞制备。结果如图1所示,CD8信号肽、免疫球蛋白信号肽与GM-CSFR信号肽的CD19嵌合抗原受体转导T细胞后,阳性率分别为22.1%、27.9%、20.3%,此结果说明信号肽的优化可以提高CD19嵌合抗原受体在T细胞的表达。
CD19嵌合抗原受体T细胞细胞毒性功能验证。利用eFluor670对CD19阳性靶细胞NALM6进行活细胞标记,将制备好的CAR-T细胞与靶细胞以0.5:1、1:1、3:1、6:1的效靶比共培养,4小时后,收集细胞,7-AAD染色,流式分析eFluor670阳性细胞群中7-AAD阳性细胞的比例,判断CAR-T对靶细胞的杀伤效率,结果如图2所示,CD19嵌合抗原受体T细胞与靶细胞共同孵育5小时,在效靶比0.5:1的条件下,靶细胞凋亡率为15%左右,效靶比3:1与6:1的条件下,靶细胞凋亡率分别为31%与29%,从中可以看出随着效靶比的提高,靶细胞凋亡率升高,说明杀伤率在提高。CD19嵌合抗原受体T细胞与靶细胞共同孵育15小时,效靶比0.5:1、3:1、6:1分别对应的靶细胞凋亡率分别为58%、63%与59%,这说明本发明制备的嵌合抗原受体T细胞对靶细胞的杀伤在一定范围内就有剂量依赖性与时间依赖性,也从侧面反映了其特异性。
本发明优化了CD19嵌合抗原受体T细胞序列,利用此序列制备的CAR-T细胞,CD19CAR的表达更高,更稳定,能较好地杀伤CD19阳性靶细胞,在肿瘤治疗上具有广泛前景。
前述对本发明的具体示例性实施方案的描述是为了说明和例证的目的。这些描述并非想将本发明限定为所公开的精确形式,并且很显然,根据上述教导,可以进行很多改变和变化。对示例性实施例进行选择和描述的目的在于解释本发明的特定原理及其实际应用,从而使得本领域的技术人员能够实现并利用本发明的各种不同的示例性实施方案以及各种不同的选择和改变。本发明的范围意在由权利要求书及其等同形式所限定。
序列表
<110> 北京多赢时代科技有限公司
<120> 信号肽优化靶向CD19的嵌合抗原受体、表达该嵌合抗原受体的T细胞及制备方法和应用
<130> P181069DD1F
<160> 24
<170> SIPOSequenceListing 1.0
<210> 1
<211> 21
<212> PRT
<213> CD8信号肽(Homo sapiens)
<400> 1
Met Ala Leu Pro Val Thr Ala Leu Leu Leu Pro Leu Ala Leu Leu Leu
1 5 10 15
His Ala Ala Arg Pro
20
<210> 2
<211> 22
<212> PRT
<213> GM-CSFR信号肽(Homo sapiens)
<400> 2
Met Leu Leu Leu Val Thr Ser Leu Leu Leu Cys Glu Leu Pro His Pro
1 5 10 15
Ala Pro Leu Leu Ile Pro
20
<210> 3
<211> 20
<212> PRT
<213> 免疫球蛋白轻链К信号肽(Homo sapiens)
<400> 3
Met Glu Thr Asp Thr Leu Leu Leu Trp Val Leu Leu Leu Trp Val Pro
1 5 10 15
Gly Ser Thr Gly
20
<210> 4
<211> 107
<212> PRT
<213> CAR19 ScFV 轻链可变区(Homo sapiens)
<400> 4
Asp Ile Gln Met Thr Gln Thr Thr Ser Ser Leu Ser Ala Ser Leu Gly
1 5 10 15
Asp Arg Val Thr Ile Ser Cys Arg Ala Ser Gln Asp Ile Ser Lys Tyr
20 25 30
Leu Asn Trp Tyr Gln Gln Lys Pro Asp Gly Thr Val Lys Leu Leu Ile
35 40 45
Tyr His Thr Ser Arg Leu His Ser Gly Val Pro Ser Arg Phe Ser Gly
50 55 60
Ser Gly Ser Gly Thr Asp Tyr Ser Leu Thr Ile Ser Asn Leu Glu Gln
65 70 75 80
Glu Asp Ile Ala Thr Tyr Phe Cys Gln Gln Gly Asn Thr Leu Pro Tyr
85 90 95
Thr Phe Gly Gly Gly Thr Lys Leu Glu Ile Thr
100 105
<210> 5
<211> 120
<212> PRT
<213> CAR ScFV重链可变区(Homo sapiens)
<400> 5
Glu Val Lys Leu Gln Glu Ser Gly Pro Gly Leu Val Ala Pro Ser Gln
1 5 10 15
Ser Leu Ser Val Thr Cys Thr Val Ser Gly Val Ser Leu Pro Asp Tyr
20 25 30
Gly Val Ser Trp Ile Arg Gln Pro Pro Arg Lys Gly Leu Glu Trp Leu
35 40 45
Gly Val Ile Trp Gly Ser Glu Thr Thr Tyr Tyr Asn Ser Ala Leu Lys
50 55 60
Ser Arg Leu Thr Ile Ile Lys Asp Asn Ser Lys Ser Gln Val Phe Leu
65 70 75 80
Lys Met Asn Ser Leu Gln Thr Asp Asp Thr Ala Ile Tyr Tyr Cys Ala
85 90 95
Lys His Tyr Tyr Tyr Gly Gly Ser Tyr Ala Met Asp Tyr Trp Gly Gln
100 105 110
Gly Thr Ser Val Thr Val Ser Ser
115 120
<210> 6
<211> 15
<212> PRT
<213> Gly-Ser linker(Homo sapiens)
<400> 6
Gly Gly Gly Gly Ser Gly Gly Gly Gly Ser Gly Gly Gly Gly Ser
1 5 10 15
<210> 7
<211> 45
<212> PRT
<213> CD8蛋白分子铰链区(Homo sapiens)
<400> 7
Thr Thr Thr Pro Ala Pro Arg Pro Pro Thr Pro Ala Pro Thr Ile Ala
1 5 10 15
Ser Gln Pro Leu Ser Leu Arg Pro Glu Ala Cys Arg Pro Ala Ala Gly
20 25 30
Gly Ala Val His Thr Arg Gly Leu Asp Phe Ala Cys Asp
35 40 45
<210> 8
<211> 24
<212> PRT
<213> 跨膜区(Homo sapiens)
<400> 8
Ile Tyr Ile Trp Ala Pro Leu Ala Gly Thr Cys Gly Val Leu Leu Leu
1 5 10 15
Ser Leu Val Ile Thr Leu Tyr Cys
20
<210> 9
<211> 42
<212> PRT
<213> 4-1BB共刺激分子结构域(Homo sapiens)
<400> 9
Lys Arg Gly Arg Lys Lys Leu Leu Tyr Ile Phe Lys Gln Pro Phe Met
1 5 10 15
Arg Pro Val Gln Thr Thr Gln Glu Glu Asp Gly Cys Ser Cys Arg Phe
20 25 30
Pro Glu Glu Glu Glu Gly Gly Cys Glu Leu
35 40
<210> 10
<211> 112
<212> PRT
<213> CD3ζ胞内信号传导结构域(Homo sapiens)
<400> 10
Arg Val Lys Phe Ser Arg Ser Ala Asp Ala Pro Ala Tyr Lys Gln Gly
1 5 10 15
Gln Asn Gln Leu Tyr Asn Glu Leu Asn Leu Gly Arg Arg Glu Glu Tyr
20 25 30
Asp Val Leu Asp Lys Arg Arg Gly Arg Asp Pro Glu Met Gly Gly Lys
35 40 45
Pro Arg Arg Lys Asn Pro Gln Glu Gly Leu Tyr Asn Glu Leu Gln Lys
50 55 60
Asp Lys Met Ala Glu Ala Tyr Ser Glu Ile Gly Met Lys Gly Glu Arg
65 70 75 80
Arg Arg Gly Lys Gly His Asp Gly Leu Tyr Gln Gly Leu Ser Thr Ala
85 90 95
Thr Lys Asp Thr Tyr Asp Ala Leu His Met Gln Ala Leu Pro Pro Arg
100 105 110
<210> 11
<211> 486
<212> PRT
<213> 人工序列(Artificial Sequence)
<400> 11
Met Ala Leu Pro Val Thr Ala Leu Leu Leu Pro Leu Ala Leu Leu Leu
1 5 10 15
His Ala Ala Arg Pro Asp Ile Gln Met Thr Gln Thr Thr Ser Ser Leu
20 25 30
Ser Ala Ser Leu Gly Asp Arg Val Thr Ile Ser Cys Arg Ala Ser Gln
35 40 45
Asp Ile Ser Lys Tyr Leu Asn Trp Tyr Gln Gln Lys Pro Asp Gly Thr
50 55 60
Val Lys Leu Leu Ile Tyr His Thr Ser Arg Leu His Ser Gly Val Pro
65 70 75 80
Ser Arg Phe Ser Gly Ser Gly Ser Gly Thr Asp Tyr Ser Leu Thr Ile
85 90 95
Ser Asn Leu Glu Gln Glu Asp Ile Ala Thr Tyr Phe Cys Gln Gln Gly
100 105 110
Asn Thr Leu Pro Tyr Thr Phe Gly Gly Gly Thr Lys Leu Glu Ile Thr
115 120 125
Gly Gly Gly Gly Ser Gly Gly Gly Gly Ser Gly Gly Gly Gly Ser Glu
130 135 140
Val Lys Leu Gln Glu Ser Gly Pro Gly Leu Val Ala Pro Ser Gln Ser
145 150 155 160
Leu Ser Val Thr Cys Thr Val Ser Gly Val Ser Leu Pro Asp Tyr Gly
165 170 175
Val Ser Trp Ile Arg Gln Pro Pro Arg Lys Gly Leu Glu Trp Leu Gly
180 185 190
Val Ile Trp Gly Ser Glu Thr Thr Tyr Tyr Asn Ser Ala Leu Lys Ser
195 200 205
Arg Leu Thr Ile Ile Lys Asp Asn Ser Lys Ser Gln Val Phe Leu Lys
210 215 220
Met Asn Ser Leu Gln Thr Asp Asp Thr Ala Ile Tyr Tyr Cys Ala Lys
225 230 235 240
His Tyr Tyr Tyr Gly Gly Ser Tyr Ala Met Asp Tyr Trp Gly Gln Gly
245 250 255
Thr Ser Val Thr Val Ser Ser Thr Thr Thr Pro Ala Pro Arg Pro Pro
260 265 270
Thr Pro Ala Pro Thr Ile Ala Ser Gln Pro Leu Ser Leu Arg Pro Glu
275 280 285
Ala Cys Arg Pro Ala Ala Gly Gly Ala Val His Thr Arg Gly Leu Asp
290 295 300
Phe Ala Cys Asp Ile Tyr Ile Trp Ala Pro Leu Ala Gly Thr Cys Gly
305 310 315 320
Val Leu Leu Leu Ser Leu Val Ile Thr Leu Tyr Cys Lys Arg Gly Arg
325 330 335
Lys Lys Leu Leu Tyr Ile Phe Lys Gln Pro Phe Met Arg Pro Val Gln
340 345 350
Thr Thr Gln Glu Glu Asp Gly Cys Ser Cys Arg Phe Pro Glu Glu Glu
355 360 365
Glu Gly Gly Cys Glu Leu Arg Val Lys Phe Ser Arg Ser Ala Asp Ala
370 375 380
Pro Ala Tyr Lys Gln Gly Gln Asn Gln Leu Tyr Asn Glu Leu Asn Leu
385 390 395 400
Gly Arg Arg Glu Glu Tyr Asp Val Leu Asp Lys Arg Arg Gly Arg Asp
405 410 415
Pro Glu Met Gly Gly Lys Pro Arg Arg Lys Asn Pro Gln Glu Gly Leu
420 425 430
Tyr Asn Glu Leu Gln Lys Asp Lys Met Ala Glu Ala Tyr Ser Glu Ile
435 440 445
Gly Met Lys Gly Glu Arg Arg Arg Gly Lys Gly His Asp Gly Leu Tyr
450 455 460
Gln Gly Leu Ser Thr Ala Thr Lys Asp Thr Tyr Asp Ala Leu His Met
465 470 475 480
Gln Ala Leu Pro Pro Arg
485
<210> 12
<211> 487
<212> PRT
<213> 人工序列(Artificial Sequence)
<400> 12
Met Leu Leu Leu Val Thr Ser Leu Leu Leu Cys Glu Leu Pro His Pro
1 5 10 15
Ala Pro Leu Leu Ile Pro Asp Ile Gln Met Thr Gln Thr Thr Ser Ser
20 25 30
Leu Ser Ala Ser Leu Gly Asp Arg Val Thr Ile Ser Cys Arg Ala Ser
35 40 45
Gln Asp Ile Ser Lys Tyr Leu Asn Trp Tyr Gln Gln Lys Pro Asp Gly
50 55 60
Thr Val Lys Leu Leu Ile Tyr His Thr Ser Arg Leu His Ser Gly Val
65 70 75 80
Pro Ser Arg Phe Ser Gly Ser Gly Ser Gly Thr Asp Tyr Ser Leu Thr
85 90 95
Ile Ser Asn Leu Glu Gln Glu Asp Ile Ala Thr Tyr Phe Cys Gln Gln
100 105 110
Gly Asn Thr Leu Pro Tyr Thr Phe Gly Gly Gly Thr Lys Leu Glu Ile
115 120 125
Thr Gly Gly Gly Gly Ser Gly Gly Gly Gly Ser Gly Gly Gly Gly Ser
130 135 140
Glu Val Lys Leu Gln Glu Ser Gly Pro Gly Leu Val Ala Pro Ser Gln
145 150 155 160
Ser Leu Ser Val Thr Cys Thr Val Ser Gly Val Ser Leu Pro Asp Tyr
165 170 175
Gly Val Ser Trp Ile Arg Gln Pro Pro Arg Lys Gly Leu Glu Trp Leu
180 185 190
Gly Val Ile Trp Gly Ser Glu Thr Thr Tyr Tyr Asn Ser Ala Leu Lys
195 200 205
Ser Arg Leu Thr Ile Ile Lys Asp Asn Ser Lys Ser Gln Val Phe Leu
210 215 220
Lys Met Asn Ser Leu Gln Thr Asp Asp Thr Ala Ile Tyr Tyr Cys Ala
225 230 235 240
Lys His Tyr Tyr Tyr Gly Gly Ser Tyr Ala Met Asp Tyr Trp Gly Gln
245 250 255
Gly Thr Ser Val Thr Val Ser Ser Thr Thr Thr Pro Ala Pro Arg Pro
260 265 270
Pro Thr Pro Ala Pro Thr Ile Ala Ser Gln Pro Leu Ser Leu Arg Pro
275 280 285
Glu Ala Cys Arg Pro Ala Ala Gly Gly Ala Val His Thr Arg Gly Leu
290 295 300
Asp Phe Ala Cys Asp Ile Tyr Ile Trp Ala Pro Leu Ala Gly Thr Cys
305 310 315 320
Gly Val Leu Leu Leu Ser Leu Val Ile Thr Leu Tyr Cys Lys Arg Gly
325 330 335
Arg Lys Lys Leu Leu Tyr Ile Phe Lys Gln Pro Phe Met Arg Pro Val
340 345 350
Gln Thr Thr Gln Glu Glu Asp Gly Cys Ser Cys Arg Phe Pro Glu Glu
355 360 365
Glu Glu Gly Gly Cys Glu Leu Arg Val Lys Phe Ser Arg Ser Ala Asp
370 375 380
Ala Pro Ala Tyr Lys Gln Gly Gln Asn Gln Leu Tyr Asn Glu Leu Asn
385 390 395 400
Leu Gly Arg Arg Glu Glu Tyr Asp Val Leu Asp Lys Arg Arg Gly Arg
405 410 415
Asp Pro Glu Met Gly Gly Lys Pro Arg Arg Lys Asn Pro Gln Glu Gly
420 425 430
Leu Tyr Asn Glu Leu Gln Lys Asp Lys Met Ala Glu Ala Tyr Ser Glu
435 440 445
Ile Gly Met Lys Gly Glu Arg Arg Arg Gly Lys Gly His Asp Gly Leu
450 455 460
Tyr Gln Gly Leu Ser Thr Ala Thr Lys Asp Thr Tyr Asp Ala Leu His
465 470 475 480
Met Gln Ala Leu Pro Pro Arg
485
<210> 13
<211> 485
<212> PRT
<213> 人工序列(Artificial Sequence)
<400> 13
Met Glu Thr Asp Thr Leu Leu Leu Trp Val Leu Leu Leu Trp Val Pro
1 5 10 15
Gly Ser Thr Gly Asp Ile Gln Met Thr Gln Thr Thr Ser Ser Leu Ser
20 25 30
Ala Ser Leu Gly Asp Arg Val Thr Ile Ser Cys Arg Ala Ser Gln Asp
35 40 45
Ile Ser Lys Tyr Leu Asn Trp Tyr Gln Gln Lys Pro Asp Gly Thr Val
50 55 60
Lys Leu Leu Ile Tyr His Thr Ser Arg Leu His Ser Gly Val Pro Ser
65 70 75 80
Arg Phe Ser Gly Ser Gly Ser Gly Thr Asp Tyr Ser Leu Thr Ile Ser
85 90 95
Asn Leu Glu Gln Glu Asp Ile Ala Thr Tyr Phe Cys Gln Gln Gly Asn
100 105 110
Thr Leu Pro Tyr Thr Phe Gly Gly Gly Thr Lys Leu Glu Ile Thr Gly
115 120 125
Gly Gly Gly Ser Gly Gly Gly Gly Ser Gly Gly Gly Gly Ser Glu Val
130 135 140
Lys Leu Gln Glu Ser Gly Pro Gly Leu Val Ala Pro Ser Gln Ser Leu
145 150 155 160
Ser Val Thr Cys Thr Val Ser Gly Val Ser Leu Pro Asp Tyr Gly Val
165 170 175
Ser Trp Ile Arg Gln Pro Pro Arg Lys Gly Leu Glu Trp Leu Gly Val
180 185 190
Ile Trp Gly Ser Glu Thr Thr Tyr Tyr Asn Ser Ala Leu Lys Ser Arg
195 200 205
Leu Thr Ile Ile Lys Asp Asn Ser Lys Ser Gln Val Phe Leu Lys Met
210 215 220
Asn Ser Leu Gln Thr Asp Asp Thr Ala Ile Tyr Tyr Cys Ala Lys His
225 230 235 240
Tyr Tyr Tyr Gly Gly Ser Tyr Ala Met Asp Tyr Trp Gly Gln Gly Thr
245 250 255
Ser Val Thr Val Ser Ser Thr Thr Thr Pro Ala Pro Arg Pro Pro Thr
260 265 270
Pro Ala Pro Thr Ile Ala Ser Gln Pro Leu Ser Leu Arg Pro Glu Ala
275 280 285
Cys Arg Pro Ala Ala Gly Gly Ala Val His Thr Arg Gly Leu Asp Phe
290 295 300
Ala Cys Asp Ile Tyr Ile Trp Ala Pro Leu Ala Gly Thr Cys Gly Val
305 310 315 320
Leu Leu Leu Ser Leu Val Ile Thr Leu Tyr Cys Lys Arg Gly Arg Lys
325 330 335
Lys Leu Leu Tyr Ile Phe Lys Gln Pro Phe Met Arg Pro Val Gln Thr
340 345 350
Thr Gln Glu Glu Asp Gly Cys Ser Cys Arg Phe Pro Glu Glu Glu Glu
355 360 365
Gly Gly Cys Glu Leu Arg Val Lys Phe Ser Arg Ser Ala Asp Ala Pro
370 375 380
Ala Tyr Lys Gln Gly Gln Asn Gln Leu Tyr Asn Glu Leu Asn Leu Gly
385 390 395 400
Arg Arg Glu Glu Tyr Asp Val Leu Asp Lys Arg Arg Gly Arg Asp Pro
405 410 415
Glu Met Gly Gly Lys Pro Arg Arg Lys Asn Pro Gln Glu Gly Leu Tyr
420 425 430
Asn Glu Leu Gln Lys Asp Lys Met Ala Glu Ala Tyr Ser Glu Ile Gly
435 440 445
Met Lys Gly Glu Arg Arg Arg Gly Lys Gly His Asp Gly Leu Tyr Gln
450 455 460
Gly Leu Ser Thr Ala Thr Lys Asp Thr Tyr Asp Ala Leu His Met Gln
465 470 475 480
Ala Leu Pro Pro Arg
485
<210> 14
<211> 63
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 14
atggccctgc ccgtgaccgc cctgctgctg cccctggccc tgctgctgca cgccgccagg 60
ccc 63
<210> 15
<211> 66
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 15
atgctgctgc tggtgaccag cctgctgctg tgcgagctgc cccaccccgc ccccctgctg 60
atcccc 66
<210> 16
<211> 60
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 16
atggagaccg acaccctgct gctgtgggtg ctgctgctgt gggtgcccgg cagcaccggc 60
<210> 17
<211> 726
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 17
gacatccaga tgacacagac tacatcctcc ctgtctgcct ctctgggaga cagagtcacc 60
atcagttgca gggcaagtca ggacattagt aaatatttaa attggtatca gcagaaacca 120
gatggaactg ttaaactcct gatctaccat acatcaagat tacactcagg agtcccatca 180
aggttcagtg gcagtgggtc tggaacagat tattctctca ccattagcaa cctggagcaa 240
gaagatattg ccacttactt ttgccaacag ggtaatacgc ttccgtacac gttcggaggg 300
gggaccaagc tggagatcac aggtggcggt ggctcgggcg gtggtgggtc gggtggcggc 360
ggatctgagg tgaaactgca ggagtcagga cctggcctgg tggcgccctc acagagcctg 420
tccgtcacat gcactgtctc aggggtctca ttacccgact atggtgtaag ctggattcgc 480
cagcctccac gaaagggtct ggagtggctg ggagtaatat ggggtagtga aaccacatac 540
tataattcag ctctcaaatc cagactgacc atcatcaagg acaactccaa gagccaagtt 600
ttcttaaaaa tgaacagtct gcaaactgat gacacagcca tttactactg tgccaaacat 660
tattactacg gtggtagcta tgctatggac tactggggcc aaggaacctc agtcaccgtc 720
tcctca 726
<210> 18
<211> 135
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 18
accacgacgc cagcgccgcg accaccaaca ccggcgccca ccatcgcgtc gcagcccctg 60
tccctgcgcc cagaggcgtg ccggccagcg gcggggggcg cagtgcacac gagggggctg 120
gacttcgcct gtgat 135
<210> 19
<211> 72
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 19
atctacatct gggcgccctt ggccgggact tgtggggtcc ttctcctgtc actggttatc 60
accctttact gc 72
<210> 20
<211> 126
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 20
aaacggggca gaaagaaact cctgtatata ttcaaacaac catttatgag accagtacaa 60
actactcaag aggaagatgg ctgtagctgc cgatttccag aagaagaaga aggaggatgt 120
gaactg 126
<210> 21
<211> 336
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 21
agagtgaagt tcagcaggag cgcagacgcc cccgcgtaca agcagggcca gaaccagctc 60
tataacgagc tcaatctagg acgaagagag gagtacgatg ttttggacaa gagacgtggc 120
cgggaccctg agatgggggg aaagccgaga aggaagaacc ctcaggaagg cctgtacaat 180
gaactgcaga aagataagat ggcggaggcc tacagtgaga ttgggatgaa aggcgagcgc 240
cggaggggca aggggcacga tggcctttac cagggtctca gtacagccac caaggacacc 300
tacgacgccc ttcacatgca ggccctgccc cctcgc 336
<210> 22
<211> 1458
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 22
atggccctgc ccgtgaccgc cctgctgctg cccctggccc tgctgctgca cgccgccagg 60
cccgacatcc agatgacaca gactacatcc tccctgtctg cctctctggg agacagagtc 120
accatcagtt gcagggcaag tcaggacatt agtaaatatt taaattggta tcagcagaaa 180
ccagatggaa ctgttaaact cctgatctac catacatcaa gattacactc aggagtccca 240
tcaaggttca gtggcagtgg gtctggaaca gattattctc tcaccattag caacctggag 300
caagaagata ttgccactta cttttgccaa cagggtaata cgcttccgta cacgttcgga 360
ggggggacca agctggagat cacaggtggc ggtggctcgg gcggtggtgg gtcgggtggc 420
ggcggatctg aggtgaaact gcaggagtca ggacctggcc tggtggcgcc ctcacagagc 480
ctgtccgtca catgcactgt ctcaggggtc tcattacccg actatggtgt aagctggatt 540
cgccagcctc cacgaaaggg tctggagtgg ctgggagtaa tatggggtag tgaaaccaca 600
tactataatt cagctctcaa atccagactg accatcatca aggacaactc caagagccaa 660
gttttcttaa aaatgaacag tctgcaaact gatgacacag ccatttacta ctgtgccaaa 720
cattattact acggtggtag ctatgctatg gactactggg gccaaggaac ctcagtcacc 780
gtctcctcaa ccacgacgcc agcgccgcga ccaccaacac cggcgcccac catcgcgtcg 840
cagcccctgt ccctgcgccc agaggcgtgc cggccagcgg cggggggcgc agtgcacacg 900
agggggctgg acttcgcctg tgatatctac atctgggcgc ccttggccgg gacttgtggg 960
gtccttctcc tgtcactggt tatcaccctt tactgcaaac ggggcagaaa gaaactcctg 1020
tatatattca aacaaccatt tatgagacca gtacaaacta ctcaagagga agatggctgt 1080
agctgccgat ttccagaaga agaagaagga ggatgtgaac tgagagtgaa gttcagcagg 1140
agcgcagacg cccccgcgta caagcagggc cagaaccagc tctataacga gctcaatcta 1200
ggacgaagag aggagtacga tgttttggac aagagacgtg gccgggaccc tgagatgggg 1260
ggaaagccga gaaggaagaa ccctcaggaa ggcctgtaca atgaactgca gaaagataag 1320
atggcggagg cctacagtga gattgggatg aaaggcgagc gccggagggg caaggggcac 1380
gatggccttt accagggtct cagtacagcc accaaggaca cctacgacgc ccttcacatg 1440
caggccctgc cccctcgc 1458
<210> 23
<211> 1461
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 23
atgctgctgc tggtgaccag cctgctgctg tgcgagctgc cccaccccgc ccccctgctg 60
atccccgaca tccagatgac acagactaca tcctccctgt ctgcctctct gggagacaga 120
gtcaccatca gttgcagggc aagtcaggac attagtaaat atttaaattg gtatcagcag 180
aaaccagatg gaactgttaa actcctgatc taccatacat caagattaca ctcaggagtc 240
ccatcaaggt tcagtggcag tgggtctgga acagattatt ctctcaccat tagcaacctg 300
gagcaagaag atattgccac ttacttttgc caacagggta atacgcttcc gtacacgttc 360
ggagggggga ccaagctgga gatcacaggt ggcggtggct cgggcggtgg tgggtcgggt 420
ggcggcggat ctgaggtgaa actgcaggag tcaggacctg gcctggtggc gccctcacag 480
agcctgtccg tcacatgcac tgtctcaggg gtctcattac ccgactatgg tgtaagctgg 540
attcgccagc ctccacgaaa gggtctggag tggctgggag taatatgggg tagtgaaacc 600
acatactata attcagctct caaatccaga ctgaccatca tcaaggacaa ctccaagagc 660
caagttttct taaaaatgaa cagtctgcaa actgatgaca cagccattta ctactgtgcc 720
aaacattatt actacggtgg tagctatgct atggactact ggggccaagg aacctcagtc 780
accgtctcct caaccacgac gccagcgccg cgaccaccaa caccggcgcc caccatcgcg 840
tcgcagcccc tgtccctgcg cccagaggcg tgccggccag cggcgggggg cgcagtgcac 900
acgagggggc tggacttcgc ctgtgatatc tacatctggg cgcccttggc cgggacttgt 960
ggggtccttc tcctgtcact ggttatcacc ctttactgca aacggggcag aaagaaactc 1020
ctgtatatat tcaaacaacc atttatgaga ccagtacaaa ctactcaaga ggaagatggc 1080
tgtagctgcc gatttccaga agaagaagaa ggaggatgtg aactgagagt gaagttcagc 1140
aggagcgcag acgcccccgc gtacaagcag ggccagaacc agctctataa cgagctcaat 1200
ctaggacgaa gagaggagta cgatgttttg gacaagagac gtggccggga ccctgagatg 1260
gggggaaagc cgagaaggaa gaaccctcag gaaggcctgt acaatgaact gcagaaagat 1320
aagatggcgg aggcctacag tgagattggg atgaaaggcg agcgccggag gggcaagggg 1380
cacgatggcc tttaccaggg tctcagtaca gccaccaagg acacctacga cgcccttcac 1440
atgcaggccc tgccccctcg c 1461
<210> 24
<211> 1455
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 24
atggagaccg acaccctgct gctgtgggtg ctgctgctgt gggtgcccgg cagcaccggc 60
gacatccaga tgacacagac tacatcctcc ctgtctgcct ctctgggaga cagagtcacc 120
atcagttgca gggcaagtca ggacattagt aaatatttaa attggtatca gcagaaacca 180
gatggaactg ttaaactcct gatctaccat acatcaagat tacactcagg agtcccatca 240
aggttcagtg gcagtgggtc tggaacagat tattctctca ccattagcaa cctggagcaa 300
gaagatattg ccacttactt ttgccaacag ggtaatacgc ttccgtacac gttcggaggg 360
gggaccaagc tggagatcac aggtggcggt ggctcgggcg gtggtgggtc gggtggcggc 420
ggatctgagg tgaaactgca ggagtcagga cctggcctgg tggcgccctc acagagcctg 480
tccgtcacat gcactgtctc aggggtctca ttacccgact atggtgtaag ctggattcgc 540
cagcctccac gaaagggtct ggagtggctg ggagtaatat ggggtagtga aaccacatac 600
tataattcag ctctcaaatc cagactgacc atcatcaagg acaactccaa gagccaagtt 660
ttcttaaaaa tgaacagtct gcaaactgat gacacagcca tttactactg tgccaaacat 720
tattactacg gtggtagcta tgctatggac tactggggcc aaggaacctc agtcaccgtc 780
tcctcaacca cgacgccagc gccgcgacca ccaacaccgg cgcccaccat cgcgtcgcag 840
cccctgtccc tgcgcccaga ggcgtgccgg ccagcggcgg ggggcgcagt gcacacgagg 900
gggctggact tcgcctgtga tatctacatc tgggcgccct tggccgggac ttgtggggtc 960
cttctcctgt cactggttat caccctttac tgcaaacggg gcagaaagaa actcctgtat 1020
atattcaaac aaccatttat gagaccagta caaactactc aagaggaaga tggctgtagc 1080
tgccgatttc cagaagaaga agaaggagga tgtgaactga gagtgaagtt cagcaggagc 1140
gcagacgccc ccgcgtacaa gcagggccag aaccagctct ataacgagct caatctagga 1200
cgaagagagg agtacgatgt tttggacaag agacgtggcc gggaccctga gatgggggga 1260
aagccgagaa ggaagaaccc tcaggaaggc ctgtacaatg aactgcagaa agataagatg 1320
gcggaggcct acagtgagat tgggatgaaa ggcgagcgcc ggaggggcaa ggggcacgat 1380
ggcctttacc agggtctcag tacagccacc aaggacacct acgacgccct tcacatgcag 1440
gccctgcccc ctcgc 1455
Claims (10)
1.一种信号肽优化靶向CD19的嵌合抗原受体,其特征在于,所述嵌合抗原受体包含顺序串联的跨膜蛋白信号肽、抗CD19抗体单链可变区、CD8蛋白分子的铰链区、跨膜区、4-1BB共刺激结构域与CD3ζ胞内信号传导结构域,其中,所述嵌合抗原受体的N-端以跨膜蛋白信号肽与抗CD19抗体单链可变区的重链可变区相连接,该跨膜蛋白信号肽的氨基酸序列如SEQ ID No.1或SEQ ID No.2或SEQ ID No.3所示,该嵌合抗原受体的氨基酸序列如SEQ IDNo.11或SEQ ID No.12或SEQ ID No.13所示,其中,分别包含跨膜蛋白信号肽氨基酸序列SEQ ID No.1、SEQ ID No.2和SEQ ID No.3的嵌合抗原受体的氨基酸序列依次对应于SEQID No.11、SEQ ID No.12和SEQ ID No.13。
2.如权利要求1所述的嵌合抗原受体,其特征在于,所述抗CD19抗体单链可变区的轻链可变区的氨基酸序列如SEQ ID No.4所示,重链可变区的氨基酸序列如SEQ ID No.5所示,轻重链之间的连接区的氨基酸序列如SEQ ID No.6所示;所述CD8蛋白分子的铰链区的氨基酸序列如SEQ ID No.7所示。
3.如权利要求1所述的嵌合抗原受体,其特征在于,所述嵌合抗原受体的跨膜区的氨基酸序列如SEQ ID No.8所示,所述4-1BB共刺激结构域的氨基酸序列如SEQ ID No.9所示,所述CD3ζ胞内信号传导结构域的氨基酸序列如SEQ ID No.10所示。
4.表达权利要求1-3任一项所述的嵌合抗原受体的T细胞。
5.如权利要求4所述的T细胞的制备方法,其特征在于,包括以下步骤:
(1)靶向CD19的嵌合抗原受体慢病毒载体的获得;
(2)靶向CD19的嵌合抗原受体慢病毒的制备;
(3)用步骤(2)制备好的靶向CD19的嵌合抗原受体慢病毒感染T细胞,以完成靶向CD19的嵌合抗原受体T细胞制备。
6.如权利要求5所述的T细胞的制备方法,其特征在于,所述靶向CD19的嵌合抗原受体慢病毒载体的获得包括以下步骤:
(1)合成靶向CD19的嵌合抗原受体的基因序列:合成跨膜蛋白信号肽、抗CD19抗体单链可变区、CD8蛋白分子的铰链区、跨膜区、4-1BB共刺激结构域与CD3ζ胞内信号传导结构域的基因序列;
(2)构建表达嵌合抗原受体的慢病毒载体。
7.如权利要求6所述的T细胞的制备方法,其特征在于,步骤(1)中所述嵌合抗原受体的基因序列如SEQ ID No.22或SEQ ID No.23或SEQ ID No.24所示。
8.如权利要求6所述的T细胞的制备方法,其特征在于,所述靶向CD19的嵌合抗原受体慢病毒制备包括以下步骤:
(1)铺板:0.25%胰酶消化293T细胞,铺在含有DMEM的培养皿中,于37℃,5%CO2恒温培养箱培养,保证24h后细胞汇合度达到90-95%;
(2)293T细胞转染:转染前2小时,将293T细胞换液,将靶向CD19的嵌合抗原受体慢病毒载体以及辅助载体与PEI混合,吹打均匀,室温静置13-17min,得到DNA/PEI混合物,将制备好的DNA/PEI混合物逐滴加到293T细胞中,继续培养4-6小时,换液;
(3)靶向CD19的嵌合抗原受体慢病毒制备:分别收集上述293T细胞转染24小时与48小时的细胞上清,用滤器过滤后,超速离心,用PBS溶解病毒沉淀,-80℃冻存病毒沉淀,待用。
9.如权利要求8所述的T细胞的制备方法,其特征在于,将靶向CD19的嵌合抗原受体慢病毒感染T细胞,以完成靶向CD19的嵌合抗原受体T细胞制备包括以下步骤:
(1)将血液转至离心管,用等体积的1640基础培养基稀释,混合均匀;
(2)将淋巴细胞分离液转移到新的离心管,将2倍体积上述稀释好的血液轻轻加到淋巴细胞分离液上面;
(3)室温,水平离心15-25min;
(4)用吸管轻轻吸取淋巴细胞层,用PBS洗涤三次后,转移到细胞培养皿,加人IL-2、CD3抗体与CD28抗体,活化24-48h;
(5)将靶向CD19的嵌合抗原受体的慢病毒加到细胞中,孵育6-10h,换液,继续培养2-4天;
(6)流式免疫荧光染色检测CAR 19的表达情况,以明确感染效率,若感染效率在20%以上,继续培养7-10天,则成功完成靶向CD19的嵌合抗原受体T细胞制备。
10.权利要求1-3任一项所述的嵌合抗原受体或权利要求4所述的表达该嵌合抗原受体的T细胞在制备治疗血液恶性肿瘤或淋巴瘤的药物或制剂中的应用。
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