CN104231085A - 靶向特异性补体系统抑制剂、其制备方法及应用 - Google Patents

靶向特异性补体系统抑制剂、其制备方法及应用 Download PDF

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CN104231085A
CN104231085A CN201410114646.2A CN201410114646A CN104231085A CN 104231085 A CN104231085 A CN 104231085A CN 201410114646 A CN201410114646 A CN 201410114646A CN 104231085 A CN104231085 A CN 104231085A
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胡维国
乔倩
张鑫
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Shanghai Kang Jing Bio Medical Science and Technology Co., Ltd.
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Abstract

本发明属生物制药领域,具体涉及靶向特异性补体系统抑制剂,还包括靶向特异性补体抑制剂的设计、制备和临床应用。本发明通过能与补体成分C3激活后形成的片段C3b和/或iC3b结合而产生靶向作用的CRIg,与具有补体抑制效果的另一组分例如H因子(factor H)直接相连或利用柔性肽段(Gly4Ser)3等方式间接相连,通过基因工程等方法制备一种融合蛋白,最终达到靶向性抑制补体激活的效果。该类型药物可应用于多种与补体异常激活有关的人类疾病的治疗和预防。

Description

靶向特异性补体系统抑制剂、其制备方法及应用
技术领域
本发明属于生物技术和制药领域,具体涉及靶向特异性补体抑制剂的设计、制备和临床应用。
背景技术
补体系统是固有免疫的主要组成部分,也是获得性免疫的重要调节者,发挥着重要的免疫监视作用,不仅可以清楚入侵的病原菌微生物和宿主细胞碎片,还可以协调整个免疫和炎症过程(Ricklin D et al.,Nat Immunol2010;11:785-797;Morgan BP et al.,Immunology letters2005;97:171-179)。补体可通过经典途径、替补途径及凝集素途径激活,其发挥生理功能主要通过激活后形成的产物进行,包括C3b/iC3b沉积于被攻击细胞膜表面,招募单核细胞等免疫效应细胞通过吞噬作用而清除靶细胞;C3a/C4a/C5a等过敏毒素引起局部炎症;以及补体膜攻击复合物(Membrane Attack Complex,MAC,即C5b-9n)在靶细胞膜表面形成孔洞而最终裂解靶细胞。在此过程中,为了防止补体激活后对正常宿主细胞的“误伤”效应,机体在进化过程中形成了10余种调控蛋白,包括存在于血液循环中的C1-INH(C1inhibitor,C1抑制蛋白)、C4BP(C4binding protein,C4结合蛋白)、factor I(I因子)、factor H(H因子)、S-protein(S蛋白)和Clusterin(簇集蛋白);以及表达与细胞膜表面的补体膜调控蛋白CD35/CR1、CD46/MCP、CD55/DAF和CD59(Zhou,X.,et al.,The Oncologist2008;13:954-966),以及近期发现的另一种补体膜调控蛋白CRIg(Helmy KY et al.,Cell.2006;124:915-927;Wiesmann C et al.,Nature,2006,444:217-220),在补体酶级联反应的不同阶段抑制补体的激活,使得补体系统在激活和抑制之间维持一种精妙的平衡,机体处于健康状况。但是,这种平衡一旦被打破,人体的很多疾病的发生、发展和治疗均与此密切相关,例如大量研究表明,补体系统的过度激活不同程度不同阶段参与其他疾病的发生与发展,例如自身溶血性贫血、自身免疫性血小板减少、再生障碍性贫血、系统性红斑狼疮、类风湿性关节炎、强直性脊柱炎、动脉粥样硬化、帕金森氏病、阿尔茨海默病(老年性痴呆)、哮喘、过敏、银屑病、重症肌无力、多发性硬化、克隆氏肠病等。因此,以补体系统为治疗靶点的药物研发,包括补体系统抑制剂重新受到重视(Ricklin D et al.,Nat Immunol2010;11:785-797),研发补体系统抑制剂,尤其是靶向性抑制剂具有巨大的社会和经济价值。
研发补体系统抑制剂在领域内经过了数十年的探索,包括与C3结合的蛋白质Compastatin(Georgopoulos LJ,et al.,Mol Immunol,2009;46:2911-7)以及抗C5的重组单抗Eculizumab(依库珠,Soliris,由亚力兄制药公司Alexion Pharmaceuticals生产)(Rother RP et al.,Nat Biotechnol,2007;25:1256-1264),但仍然存在一些明显的不足。Compastatin已经进入临床前期试验,但是由于抑制所有部位C3的功能而存在潜在的导致感染的风险。另外,尽管依库珠已经成功用于治疗治疗阵发性睡眠性(夜间)血红蛋白尿(Paroxysmal Nocturnal Hemoglobinuria,PNH),但知识产权为国外拥有,价格异常昂贵,使用一年的价格是409,500美元,2009年,Soliris销售额为2.95亿美元,2010年销售额5.41亿美元。PNH是一种后天获得性溶血性疾病,主要由于PIG-A基因的突变导致CD55和CD59这两种正常通过糖基磷肌酰肌醇(glycosylphosphatidylinositol,GPI)锚定于红细胞膜上的补体膜调控蛋白不再锚定于PNH患者的血细胞膜上,所以PNH患者的血细胞对补体的攻击异常敏感,极易产生白细胞下降导致的感染、红细胞破裂造成的溶血,以及血小板被激活,最终导致反复感染、溶血、血栓形成、肾功能衰竭、骨髓衰竭和肺动脉压升高等,疾病进行性加重,在依库珠单抗出现之前基本无药可治,从而严重威胁患者的生命(Parker C et al.,Blood,2005;106:3699-3709)。依库珠的作用机理是与C5结合后,在补体级联反应的末期抑制补体的激活,从而阻止MAC在血细胞膜上的沉积和对血细胞尤其是对红细胞的裂解,临床上对PNH患者的治疗收到了较好的疗效,显著减少血栓形成,66%的患者在治疗一年内不需再输血(Kelly RJ et al.,Blood,2011;117:6786-6792)。然而,理论上应用依库珠单抗后PNH患者的病情仍然无法得到完全缓解,因为补体级联反应的C3水平仍然存在激活,产生C3b/iC3b并沉积与血细胞表面,使这些血细胞被单核细胞吞噬,最终造成血管外溶血(Risitano AM et al.,Blood,2009;113:4094-4100),这也是依库珠单抗治疗并不十分满意的原因。因此,在补体激活更早期的C3水平,而不是像依库珠单抗的末期C5水平,阻止补体的激活,将有效同时阻止MAC介导的血管内和C3b/iC3b介导的血管外溶血,从而产生更好的疗效。
发明内容
本发明的目的是提供一种靶向特异性补体抑制剂。
本发明的另一个目的是提供上述靶向特异性补体抑制剂在制备抑制补体激活药剂中的应用。
为了解决上述技术问题,本发明经过数以千记的实验和反复的测试,发现CRIg可以用于作为本发明靶向特异性补体抑制剂的基础。
CRIg最早发现表达于巨噬细胞膜表面的一种C3b/iC3b受体,结合后可吞噬病原体或其他颗粒(Helmy KY et al.,Cell.2006;124:915-927)。进一步结构生物学研究还发现CRIg可通过特异性识别C3b并抑制C3转换酶的激活,从而在补体级联反应的早期即产生抑制效应——这种抑制作用为针对补体的替补激活途径,但其抑制效果低于经典的补体替补途径抑制剂factor H;同时,CRIg的功能位点位于胞外区(Wiesmann C et al.,Nature,2006,444:217-220)。查阅发现至今未有CRIg用于补体抑制的应用报道,更未有利用其与C3b/iC3b结合的特性研发靶向性补体抑制剂的报道。
本发明利用CRIg这两种独特的特性,克隆其胞外功能区基因并与其他补体调控蛋白融合表达,制备成一种通过CRIg与C3b/iC3b特异性结合的靶向作用,把重组联接的补体调控蛋白运送至局部补体激活部位,从而达到抑制补体激活,预防或治疗疾病的目的。CRIg的胞外功能部位的基因序列见序列表的SEQ ID NO9,氨基酸序列见序列表SEQ ID NO10。另外,与CRIg相连的其他部分包括所有能抑制补体激活的成分,例如补体调控蛋白C1-INH、C4BP、factor I、factor H、S-protein、Clusterin、CD35/CR1、CD46/MCP、CD55/DAF和CD59、甚至CRIg本身等的全长或部分序列,其中相连的方式包括直接相连,以及通过其他物理、化学和生物等手段通过其他分子间接相连。
本发明以CRIg功能性胞外区与fH功能区直接或通过柔性连接肽(Ser1Gly4)3间接相连为例,描述该重组蛋白CRIg-fH及CRIg-L-fH的靶向补体抑制效果。
本发明提供了一种蛋白质,它编码具有抑制补体激活功能的蛋白,并且包含CRIg和补体抑制剂的序列。
CRIg与不同的补体抑制剂,包括存在于血液循环中的C1-INH(C1inhibitor,C1抑制蛋白)、C4BP(C4binding protein,C4结合蛋白)、factor I(I因子)、factor H(H因子)、S-protein(S蛋白)和Clusterin(簇集蛋白);以及表达与细胞膜表面的补体膜调控蛋白CD35/CR1、CD46/MCP、CD55/DAF和CD59甚至CRIg本身,以及其他具有补体抑制功能的物质进行连接。
CRIg与其他补体抑制剂的连接方式,包括:
(1)CRIg与其他补体抑制剂直接相连,两者之间没有任何其他连接物。
(2)CRIg与其他补体抑制剂通过生物方法连接。
(3)CRIg与其他补体抑制剂通过化学方法连接。
例如,该蛋白质由CRIg和factor H组成。
在本发明的一个实施例中,该蛋白质由CRIg胞外区、factor H以及两者间的连接物组成。
所述的补体抑制功能区可以是factor H、C1-INH、C4BP、factor I、S-protein、Clusterin、CD35/CR1、CD46/MCP、CD55/DAF、CD59或者CRIg的功能片段或全长。
在本发明的另一个实施例中,该蛋白质的氨基酸序列如SEQ ID NO2或者SEQ ID NO4所示。
本发明提供了编码上述蛋白质的核酸。
较好的,其核苷酸编码序列如SEQ ID NO1或者SEQ ID NO3所示。
本发明还提供了一种含上述核酸的载体。以CRIg-fH和CRIg-(Gly4Ser)3–fH为例,该载体含有核酸的碱基序列如SEQ ID NO1或者SEQ ID NO3所示。
本发明还提供了一种含上述核酸的细胞。
本发明的蛋白质可以利用基因工程技术,连接CRIg蛋白质和factor H蛋白质;
所述的CRIg蛋白质的氨基酸序列如SEQ ID NO6所示;
所述的factor H蛋白质的氨基酸序列如SEQ ID NO8所示。
也可以按照蛋白质的序列依次连接氨基酸残基。
本发明的核酸也可以利用基因工程技术,连接CRIg蛋白质和factor H蛋白质的编码序列;或者按照核酸的序列依次连接碱基。
本发明提供了靶向特异性补体系统抑制剂,即上述蛋白质在制备抑制补体激活的药物中的应用。也可以用于制备保护细胞免受补体攻击并提高红细胞压积的药物。
本发明提供了上述蛋白质在制备保护阵发性夜间血红蛋白尿患者血细胞的药物中的应用,也可用于制备其他疾病中使遭受补体攻击的细胞免受补体攻击的药物或者药剂。
另一方面,本发明提供了一种药物,所述药物的活性成分为上述蛋白质,即含有CRIg和factor H的功能域。
例如,该药物是抑制补体激活的药物。
又如,该药物产生含有氨基酸序列如SEQ ID NO2或者SEQ ID NO4所示的蛋白质。
上述药物的给药方式包括:
(1)直接给药。
(2)通过能携带或表达该药物的载体系统给药。
本发明通过能与补体成分C3激活后形成的片段C3b和/或iC3b结合而产生靶向作用的CRIg,与具有补体抑制效果的另一组分例如H因子(factor H)直接或利用柔性肽段(Gly4Ser)3等方式相连,通过基因工程的方法制备一种融合蛋白,最终达到靶向性抑制补体激活的效果。该类型药物可应用于多种与补体异常激活有关的人类疾病的治疗和预防。
附图说明
图1为CRIg-fH和CRIg-L-fH的表达与纯化。
图2为CRIg-L-fH与C3活化和降解产物C3b、iC3b、C3c、C3d相互作用的动力学分析和结合力测定。
图3为CRIg-fH与C3活化和降解产物C3b、iC3b、C3c、C3d相互作用的动力学分析和结合力测定。
图4为CRIg-L-fH对补体替补途径诱导的七例PNH患者红细胞的溶血起保护作用。
图5为CRIg-L-fH对补体经典途径诱导的七例PNH患者红细胞的溶血起保护作用。
图6为CRIg-L-fH对Thy-1N大鼠肾炎引发的血清尿素氮升高病理症状的缓解作用。
图7为CRIg-L-fH对Thy-1N大鼠肾炎引发的血清肌酐升高病理症状的缓解作用。
图8为CRIg-L-fH对Thy-1N大鼠肾炎引发的尿液总蛋白渗漏病理症状的缓解作用。
图9为CRIg-L-fH对Thy-1N大鼠肾炎引发的血尿病理症状的缓解作用。
图10为免疫荧光检测各组大鼠肾脏冰冻切片的IgG、C3片段、MAC和CRIg-L-fH的沉积。
其中,*P<0.05,**P<0.01,***P<0.001;n=4。
具体实施方式
实施例1
CRIg-fH及CRIg-L-fH蛋白表达载体的构建、真核表达和纯化
1.仪器与材料:
Mastercycler pro-Eppendorf PCR仪(德国Eppendorf公司),DK-8D型电热恒温水槽(上海精宏实验设备有限公司),IQ350凝胶成像系统(美国GE Healthcare公司),CO2细胞培养箱(美国Thermo Scientific公司),FR-980A生物电泳图像分析系统(复日科技公司)、BioRAD Mini protein Tera system(美国BioRAD公司)、NanoVue RNA/DNA浓度/纯度检测仪(德国IKA公司)
2.实验方法:
2.1基因克隆和载体构建
Trizol法(invitrogen)提取人淋巴瘤U937细胞的总RNA,反转录为cDNA(promegareverse transcription kit),PCR扩增CRIg基因的胞外结构域(G19-K137);Trizol法提取人肝癌细胞系Hep3B细胞的总RNA,反转录后PCR扩增factorH基因的SCR1-5结构域(E19-K323)。
设计同时包含CRIg胞外结构域和factor H SCR1-5结构域以及linker序列(L,(Ser1Gly4)3)(TCTGGTGGCGGTGGCTCCGGCGGAGGTGGGTCCGGTGGCGGCGGA)的引物,应用重叠PCR(Overlapping PCR)的方法将CRIg胞外结构域基因和factorH SCR1-5基因连接起来,插入到pHLsec真核表达载体中,双向测序鉴定插入序列,载体命名为pHLsec-CRIg-fH和pHLsec-CRIg-L-fH。
CRIg核酸序列(SEQ ID NO5)
ATGGGGATCTTACTGGGCCTGCTACTCCTGGGGCACCTAACAGTGGACACTTATGGCCGTCCCATCCTGGAAGTGCCAGAGAGTGTAACAGGACCTTGGAAAGGGGATGTGAATCTTCCCTGCACCTATGACCCCCTGCAAGGCTACACCCAAGTCTTGGTGAAGTGGCTGGTACAACGTGGCTCAGACCCTGTCACCATCTTTCTACGTGACTCTTCTGGAGACCATATCCAGCAGGCAAAGTACCAGGGCCGCCTGCATGTGAGCCACAAGGTTCCAGGAGATGTATCCCTCCAATTGAGCACCCTGGAGATGGATGACCGGAGCCACTACACGTGTGAAGTCACCTGGCAGACTCCTGATGGCAACCAAGTCGTGAGAGATAAGATTACTGAGCTCCGTGTCCAGAAACTCTCTGTCTCCAAGCCCACAGTGACAACTGGCAGCGGTTATGGCTTCACGGTGCCCCAGGGAATGAGGATTAGCCTTCAATGCCAGGCTCGGGGTTCTCCTCCCATCAGTTATATTTGGTATAAGCAACAGACTAATAACCAGGAACCCATCAAAGTAGCAACCCTAAGTACCTTACTCTTCAAGCCTGCGGTGATAGCCGACTCAGGCTCCTATTTCTGCACTGCCAAGGGCCAGGTTGGCTCTGAGCAGCACAGCGACATTGTGAAGTTTGTGGTCAAAGACTCCTCAAAGCTACTCAAGACCAAGACTGAGGCACCTACAACCATGACATACCCCTTGAAAGCAACATCTACAGTGAAGCAGTCCTGGGACTGGACCACTGACATGGATGGCTACCTTGGAGAGACCAGTGCTGGGCCAGGAAAGAGCCTGCCTGTCTTTGCCATCATCCTCATCATCTCCTTGTGCTGTATGGTGGTTTTTACCATGGCCTATATCATGCTCTGTCGGAAGACATCCCAACAAGAGCATGTCTACGAAGCAGCCAGGGCACATGCCAGAGAGGCCAACGACTCTGGAGAAACCATGAGGGTGGCCATCTTCGCAAGTGGCTGCTCCAGTGATGAGCCAACTTCCCAGAATCTGGGCAACAACTACTCTGATGAGCCCTGCATAGGACAGGAGTACCAGATCATCGCCCAGATCAATGGCAACTACGCCCGCCTGCTGGACACAGTTCCTCTGGATTATGAGTTTCTGGCCACTGAGGGCAAAAGTGTCTGTTAA
CRIg蛋白序列(SEQ ID NO6)
MGILLGLLLLGHLTVDTYGRPILEVPESVTGPWKGDVNLPCTYDPLQGYTQVLVKWLVQRGSDPVTIFLRDSSGDHIQQAKYQGRLHVSHKVPGDVSLQLSTLEMDDRSHYTCEVTWQTPDGNQVVRDKITELRVQKLSVSKPTVTTGSGYGFTVPQGMRISLQCQARGSPPISYIWYKQQTNNQEPIKVATLSTLLFKPAVIADSGSYFCTAKGQVGSEQHSDIVKFVVKDSSKLLKTKTEAPTTMTYPLKATSTVKQSWDWTTDMDGYLGETSAGPGKSLPVFAIILIISLCCMVVFTMAYIMLCRKTSQQEHVYEAARAHAREANDSGETMRVAIFASGCSSDEPTSQNLGNNYSDEPCIGQEYQIIAQINGNYARLLDTVPLDYEFLATEGKSVC
Factor H核酸序列(SEQ ID NO7)
ATGAGACTTCTAGCAAAGATTATTTGCCTTATGTTATGGGCTATTTGTGTAGCAGAAGATTGCAATGAACTTCCTCCAAGAAGAAATACAGAAATTCTGACAGGTTCCTGGTCTGACCAAACATATCCAGAAGGCACCCAGGCTATCTATAAATGCCGCCCTGGATATAGATCTCTTGGAAATGTAATAATGGTATGCAGGAAGGGAGAATGGGTTGCTCTTAATCCATTAAGGAAATGTCAGAAAAGGCCCTGTGGACATCCTGGAGATACTCCTTTTGGTACTTTTACCCTTACAGGAGGAAATGTGTTTGAATATGGTGTAAAAGCTGTGTATACATGTAATGAGGGGTATCAATTGCTAGGTGAGATTAATTACCGTGAATGTGACACAGATGGATGGACCAATGATATTCCTATATGTGAAGTTGTGAAGTGTTTACCAGTGACAGCACCAGAGAATGGAAAAATTGTCAGTAGTGCAATGGAACCAGATCGGGAATACCATTTTGGACAAGCAGTACGGTTTGTATGTAACTCAGGCTACAAGATTGAAGGAGATGAAGAAATGCATTGTTCAGACGATGGTTTTTGGAGTAAAGAGAAACCAAAGTGTGTGGAAATTTCATGCAAATCCCCAGATGTTATAAATGGATCTCCTATATCTCAGAAGATTATTTATAAGGAGAATGAACGATTTCAATATAAATGTAACATGGGTTATGAATACAGTGAAAGAGGAGATGCTGTATGCACTGAATCTGGATGGCGTCCGTTGCCTTCATGTGAAGAAAAATCATGTGATAATCCTTATATTCCAAATGGTGACTACTCACCTTTAAGGATTAAACACAGAACTGGAGATGAAATCACGTACCAGTGTAGAAATGGTTTTTATCCTGCAACCCGGGGAAATACAGCAAAATGCACAAGTACTGGCTGGATACCTGCTCCGAGATGTACCTTGAAACCTTGTGATTATCCAGACATTAAACATGGAGGTCTATATCATGAGAATATGCGTAGACCATACTTTCCAGTAGCTGTAGGAAAATATTACTCCTATTACTGTGATGAACATTTTGAGACTCCGTCAGGAAGTTACTGGGATCACATTCATTGCACACAAGATGGATGGTCGCCAGCAGTACCATGCCTCAGAAAATGTTATTTTCCTTATTTGGAAAATGGATATAATCAAAATCATGGAAGAAAGTTTGTACAGGGTAAATCTATAGACGTTGCCTGCCATCCTGGCTACGCTCTTCCAAAAGCGCAGACCACAGTTACATGTATGGAGAATGGCTGGTCTCCTACTCCCAGATGCATCCGTGTCAAAACATGTTCCAAATCAAGTATAGATATTGAGAATGGGTTTATTTCTGAATCTCAGTATACATATGCCTTAAAAGAAAAAGCGAAATATCAATGCAAACTAGGATATGTAACAGCAGATGGTGAAACATCAGGATCAATTACATGTGGGAAAGATGGATGGTCAGCTCAACCCACGTGCATTAAATCTTGTGATATCCCAGTATTTATGAATGCCAGAACTAAAAATGACTTCACATGGTTTAAGCTGAATGACACATTGGACTATGAATGCCATGATGGTTATGAAAGCAATACTGGAAGCACCACTGGTTCCATAGTGTGTGGTTACAATGGTTGGTCTGATTTACCCATATGTTATGAAAGAGAATGCGAACTTCCTAAAATAGATGTACACTTAGTTCCTGATCGCAAGAAAGACCAGTATAAAGTTGGAGAGGTGTTGAAATTCTCCTGCAAACCAGGATTTACAATAGTTGGACCTAATTCCGTTCAGTGCTACCACTTTGGATTGTCTCCTGACCTCCCAATATGTAAAGAGCAAGTACAATCATGTGGTCCACCTCCTGAACTCCTCAATGGGAATGTTAAGGAAAAAACGAAAGAAGAATATGGACACAGTGAAGTGGTGGAATATTATTGCAATCCTAGATTTCTAATGAAGGGACCTAATAAAATTCAATGTGTTGATGGAGAGTGGACAACTTTACCAGTGTGTATTGTGGAGGAGAGTACCTGTGGAGATATACCTGAACTTGAACATGGCTGGGCCCAGCTTTCTTCCCCTCCTTATTACTATGGAGATTCAGTGGAATTCAATTGCTCAGAATCATTTACAATGATTGGACACAGATCAATTACGTGTATTCATGGAGTATGGACCCAACTTCCCCAGTGTGTGGCAATAGATAAACTTAAGAAGTGCAAATCATCAAATTTAATTATACTTGAGGAACATTTAAAAAACAAGAAGGAATTCGATCATAATTCTAACATAAGGTACAGATGTAGAGGAAAAGAAGGATGGATACACACAGTCTGCATAAATGGAAGATGGGATCCAGAAGTGAACTGCTCAATGGCACAAATACAATTATGCCCACCTCCACCTCAGATTCCCAATTCTCACAATATGACAACCACACTGAATTATCGGGATGGAGAAAAAGTATCTGTTCTTTGCCAAGAAAATTATCTAATTCAGGAAGGAGAAGAAATTACATGCAAAGATGGAAGATGGCAGTCAATACCACTCTGTGTTGAAAAAATTCCATGTTCACAACCACCTCAGATAGAACACGGAACCATTAATTCATCCAGGTCTTCACAAGAAAGTTATGCACATGGGACTAAATTGAGTTATACTTGTGAGGGTGGTTTCAGGATATCTGAAGAAAATGAAACAACATGCTACATGGGAAAATGGAGTTCTCCACCTCAGTGTGAAGGCCTTCCTTGTAAATCTCCACCTGAGATTTCTCATGGTGTTGTAGCTCACATGTCAGACAGTTATCAGTATGGAGAAGAAGTTACGTACAAATGTTTTGAAGGTTTTGGAATTGATGGGCCTGCAATTGCAAAATGCTTAGGAGAAAAATGGTCTCACCCTCCATCATGCATAAAAACAGATTGTCTCAGTTTACCTAGCTTTGAAAATGCCATACCCATGGGAGAGAAGAAGGATGTGTATAAGGCGGGTGAGCAAGTGACTTACACTTGTGCAACATATTACAAAATGGATGGAGCCAGTAATGTAACATGCATTAATAGCAGATGGACAGGAAGGCCAACATGCAGAGACACCTCCTGTGTGAATCCGCCCACAGTACAAAATGCTTATATAGTGTCGAGACAGATGAGTAAATATCCATCTGGTGAGAGAGTACGTTATCAATGTAGGAGCCCTTATGAAATGTTTGGGGATGAAGAAGTGATGTGTTTAAATGGAAACTGGACGGAACCACCTCAATGCAAAGATTCTACAGGAAAATGTGGGCCCCCTCCACCTATTGACAATGGGGACATTACTTCATTCCCGTTGTCAGTATATGCTCCAGCTTCATCAGTTGAGTACCAATGCCAGAACTTGTATCAACTTGAGGGTAACAAGCGAATAACATGTAGAAATGGACAATGGTCAGAACCACCAAAATGCTTACATCCGTGTGTAATATCCCGAGAAATTATGGAAAATTATAACATAGCATTAAGGTGGACAGCCAAACAGAAGCTTTATTCGAGAACAGGTGAATCAGTTGAATTTGTGTGTAAACGGGGATATCGTCTTTCATCACGTTCTCACACATTGCGAACAACATGTTGGGATGGGAAACTGGAGTATCCAACTTGTGCAAAAAGATAG
FactorH蛋白序列(SEQ ID NO8)
MRLLAKIICLMLWAICVAEDCNELPPRRNTEILTGSWSDQTYPEGTQAIYKCRPGYRSLGNVIMVCRKGEWVALNPLRKCQKRPCGHPGDTPFGTFTLTGGNVFEYGVKAVYTCNEGYQLLGEINYRECDTDGWTNDIPICEVVKCLPVTAPENGKIVSSAMEPDREYHFGQAVRFVCNSGYKIEGDEEMHCSDDGFWSKEKPKCVEISCKSPDVINGSPISQKIIYKENERFQYKCNMGYEYSERGDAVCTESGWRPLPSCEEKSCDNPYIPNGDYSPLRIKHRTGDEITYQCRNGFYPATRGNTAKCTSTGWIPAPRCTLKPCDYPDIKHGGLYHENMRRPYFPVAVGKYYSYYCDEHFETPSGSYWDHIHCTQDGWSPAVPCLRKCYFPYLENGYNQNHGRKFVQGKSIDVACHPGYALPKAQTTVTCMENGWSPTPRCIRVKTCSKSSIDIENGFISESQYTYALKEKAKYQCKLGYVTADGETSGSITCGKDGWSAQPTCIKSCDIPVFMNARTKNDFTWFKLNDTLDYECHDGYESNTGSTTGSIVCGYNGWSDLPICYERECELPKIDVHLVPDRKKDQYKVGEVLKFSCKPGFTIVGPNSVQCYHFGLSPDLPICKEQVQSCGPPPELLNGNVKEKTKEEYGHSEVVEYYCNPRFLMKGPNKIQCVDGEWTTLPVCIVEESTCGDIPELEHGWAQLSSPPYYYGDSVEFNCSESFTMIGHRSITCIHGVWTQLPQCVAIDKLKKCKSSNLIILEEHLKNKKEFDHNSNIRYRCRGKEGWIHTVCINGRWDPEVNCSMAQIQLCPPPPQIPNSHNMTTTLNYRDGEKVSVLCQENYLIQEGEEITCKDGRWQSIPLCVEKIPCSQPPQIEHGTINSSRSSQESYAHGTKLSYTCEGGFRISEENETTCYMGKWSSPPQCEGLPCKSPPEISHGVVAHMSDSYQYGEEVTYKCFEGFGIDGPAIAKCLGEKWSHPPSCIKTDCLSLPSFENAIPMGEKKDVYKAGEQVTYTCATYYKMDGASNVTCINSRWTGRPTCRDTSCVNPPTVQNAYIVSRQMSKYPSGERVRYQCRSPYEMFGDEEVMCLNGNWTEPPQCKDSTGKCGPPPPIDNGDITSFPLSVYAPASSVEYQCQNLYQLEGNKRITCRNGQWSEPPKCLHPCVISREIMENYNIALRWTAKQKLYSRTGESVEFVCKRGYRLSSRSHTLRTTCWDGKLEYPTCAKR
CRIg胞外结构域
核酸序列(357bps)(SEQ ID NO9)
ggccgtcccatcctggaagtgccagagagtgtaacaggaccttggaaaggggatgtgaatcttccctgcacctatgaccccctgcaaggctacacccaagtcttggtgaagtggctggtacaacgtggctcagaccctgtcaccatctttctacgtgactcttctggagaccatatccagcaggcaaagtaccagggccgcctgcatgtgagccacaaggttccaggagatgtatccctccaattgagcaccctggagatggatgaccggagccactacacgtgtgaagtcacctggcagactcctgatggcaaccaagtcgtgagagataagattactgagctccgtgtccagaaa
蛋白序列(119aa)(SEQ ID NO10)
GRPILEVPESVTGPWKGDVNLPCTYDPLQGYTQVLVKWLVQRGSDPVTIFLRDSSGDHIQQAKYQGRLHVSHKVPGDVSLQLSTLEMDDRSHYTCEVTWQTPDGNQVVRDKITELRVQK
FactorH SCR1-5结构域
核酸序列(915bp)(SEQ ID NO11)
gaagattgcaatgaacttcctccaagaagaaatacagaaattctgacaggttcctggtctgaccaaacatatccagaaggcacccaggctatctataaatgccgccctggatatagatctcttggaaatgtaataatggtatgcaggaagggagaatgggttgctcttaatccattaaggaaatgtcagaaaaggccctgtggacatcctggagatactccttttggtacttttacccttacaggaggaaatgtgtttgaatatggtgtaaaagctgtgtatacatgtaatgaggggtatcaattgctaggtgagattaattaccgtgaatgtgacacagatggatggaccaatgatattcctatatgtgaagttgtgaagtgtttaccagtgacagcaccagagaatggaaaaattgtcagtagtgcaatggaaccagatcgggaataccattttggacaagcagtacggtttgtatgtaactcaggctacaagattgaaggagatgaagaaatgcattgttcagacgatggtttttggagtaaagagaaaccaaagtgtgtggaaatttcatgcaaatccccagatgttataaatggatctcctatatctcagaagattatttataaggagaatgaacgatttcaatataaatgtaacatgggttatgaatacagtgaaagaggagatgctgtatgcactgaatctggatggcgtccgttgccttcatgtgaagaaaaatcatgtgataatccttatattccaaatggtgactactcacctttaaggattaaacacagaactggagatgaaatcacgtaccagtgtagaaatggtttttatcctgcaacccggggaaatacagcaaaatgcacaagtactggctggatacctgctccgagatgtaccttgaaa
蛋白序列(305aa)(SEQ ID NO12)
EDCNELPPRRNTEILTGSWSDQTYPEGTQAIYKCRPGYRSLGNVIMVCRKGEWVALNPLRKCQKRPCGHPGDTPFGTFTLTGGNVFEYGVKAVYTCNEGYQLLGEINYRECDTDGWTNDIPICEVVKCLPVTAPENGKIVSSAMEPDREYHFGQAVRFVCNSGYKIEGDEEMHCSDDGFWSKEKPKCVEISCKSPDVINGSPISQKIIYKENERFQYKCNMGYEYSERGDAVCTESGWRPLPSCEEKSCDNPYIPNGDYSPLRIKHRTGDEITYQCRNGFYPATRGNTAKCTSTGWIPAPRCTLK
1.1真核蛋白表达系统的建立
取对数生长期的293FT细胞,以每皿1.2X107的细胞密度均匀铺在直径15cm的细胞培养皿中,PEI法分别转染pHLsec-CRIg-fH和pHLsec-CRIg-L-Fh大抽质粒,在37℃,5%CO2培养箱中培养6小时后更换293表达培养基(invitrogen),继续培养三天后收取细胞上清,离心去除细胞及细胞碎片。
1.2蛋白亲和纯化、透析和蔗糖浓缩
应用Ni2+柱亲和纯化的方法,将细胞上清中CRIg-fH和CRIg-L-fH纯化洗脱至洗脱缓冲液中,转移至透析管中(Novagen),透析法将缓冲液更换为PBS,蔗糖法吸水浓缩后再用PBS透析。
2.实验结果:
通过上述方法应用真核系统诱导表达和纯化得到CRIg-fH和CRIg-L-fH两种融合蛋白,PAGE电泳检测为单一条带(图1),浓缩后浓度可达到1~2mg/ml。
所涉及相关序列如下:
CRIg-fH核酸序列(SEQ ID NO1)
ATGGGCCGTCCCATCCTGGAAGTGCCAGAGAGTGTAACAGGACCTTGGAAAGGGGATGTGAATCTTCCCTGCACCTATGACCCCCTGCAAGGCTACACCCAAGTCTTGGTGAAGTGGCTGGTACAACGTGGCTCAGACCCTGTCACCATCTTTCTACGTGACTCTTCTGGAGACCATATCCAGCAGGCAAAGTACCAGGGCCGCCTGCATGTGAGCCACAAGGTTCCAGGAGATGTATCCCTCCAATTGAGCACCCTGGAGATGGATGACCGGAGCCACTACACGTGTGAAGTCACCTGGCAGACTCCTGATGGCAACCAAGTCGTGAGAGATAAGATTACTGAGCTCCGTGTCCAGAAAGAAGATTGCAATGAACTTCCTCCAAGAAGAAATACAGAAATTCTGACAGGTTCCTGGTCTGACCAAACATATCCAGAAGGCACCCAGGCTATCTATAAATGCCGCCCTGGATATAGATCTCTTGGAAATGTAATAATGGTATGCAGGAAGGGAGAATGGGTTGCTCTTAATCCATTAAGGAAATGTCAGAAAAGGCCCTGTGGACATCCTGGAGATACTCCTTTTGGTACTTTTACCCTTACAGGAGGAAATGTGTTTGAATATGGTGTAAAAGCTGTGTATACATGTAATGAGGGGTATCAATTGCTAGGTGAGATTAATTACCGTGAATGTGACACAGATGGATGGACCAATGATATTCCTATATGTGAAGTTGTGAAGTGTTTACCAGTGACAGCACCAGAGAATGGAAAAATTGTCAGTAGTGCAATGGAACCAGATCGGGAATACCATTTTGGACAAGCAGTACGGTTTGTATGTAACTCAGGCTACAAGATTGAAGGAGATGAAGAAATGCATTGTTCAGACGATGGTTTTTGGAGTAAAGAGAAACCAAAGTGTGTGGAAATTTCATGCAAATCCCCAGATGTTATAAATGGATCTCCTATATCTCAGAAGATTATTTATAAGGAGAATGAACGATTTCAATATAAATGTAACATGGGTTATGAATACAGTGAAAGAGGAGATGCTGTATGCACTGAATCTGGATGGCGTCCGTTGCCTTCATGTGAAGAAAAATCATGTGATAATCCTTATATTCCAAATGGTGACTACTCACCTTTAAGGATTAAACACAGAACTGGAGATGAAATCACGTACCAGTGTAGAAATGGTTTTTATCCTGCAACCCGGGGAAATACAGCAAAATGCACAAGTACTGGCTGGATACCTGCTCCGAGATGTACCTTGAAATAA
CRIg-fH蛋白序列(SEQ ID NO2)
MGRPILEVPESVTGPWKGDVNLPCTYDPLQGYTQVLVKWLVQRGSDPVTIFLRDSSGDHIQQAKYQGRLHVSHKVPGDVSLQLSTLEMDDRSHYTCEVTWQTPDGNQVVRDKITELRVQKEDCNELPPRRNTEILTGSWSDQTYPEGTQAIYKCRPGYRSLGNVIMVCRKGEWVALNPLRKCQKRPCGHPGDTPFGTFTLTGGNVFEYGVKAVYTCNEGYQLLGEINYRECDTDGWTNDIPICEVVKCLPVTAPENGKIVSSAMEPDREYHFGQAVRFVCNSGYKIEGDEEMHCSDDGFWSKEKPKCVEISCKSPDVINGSPISQKIIYKENERFQYKCNMGYEYSERGDAVCTESGWRPLPSCEEKSCDNPYIPNGDYSPLRIKHRTGDEITYQCRNGFYPATRGNTAKCTSTGWIPAPRCTLKStop
CRIg-L-fH核酸序列(SEQ ID NO3)
ATGGGCCGTCCCATCCTGGAAGTGCCAGAGAGTGTAACAGGACCTTGGAAAGGGGATGTGAATCTTCCCTGCACCTATGACCCCCTGCAAGGCTACACCCAAGTCTTGGTGAAGTGGCTGGTACAACGTGGCTCAGACCCTGTCACCATCTTTCTACGTGACTCTTCTGGAGACCATATCCAGCAGGCAAAGTACCAGGGCCGCCTGCATGTGAGCCACAAGGTTCCAGGAGATGTATCCCTCCAATTGAGCACCCTGGAGATGGATGACCGGAGCCACTACACGTGTGAAGTCACCTGGCAGACTCCTGATGGCAACCAAGTCGTGAGAGATAAGATTACTGAGCTCCGTGTCCAGAAATCTGGTGGCGGTGGCTCCGGCGGAGGTGGGTCCGGTGGCGGCGGAGAAGATTGCAATGAACTTCCTCCAAGAAGAAATACAGAAATTCTGACAGGTTCCTGGTCTGACCAAACATATCCAGAAGGCACCCAGGCTATCTATAAATGCCGCCCTGGATATAGATCTCTTGGAAATGTAATAATGGTATGCAGGAAGGGAGAATGGGTTGCTCTTAATCCATTAAGGAAATGTCAGAAAAGGCCCTGTGGACATCCTGGAGATACTCCTTTTGGTACTTTTACCCTTACAGGAGGAAATGTGTTTGAATATGGTGTAAAAGCTGTGTATACATGTAATGAGGGGTATCAATTGCTAGGTGAGATTAATTACCGTGAATGTGACACAGATGGATGGACCAATGATATTCCTATATGTGAAGTTGTGAAGTGTTTACCAGTGACAGCACCAGAGAATGGAAAAATTGTCAGTAGTGCAATGGAACCAGATCGGGAATACCATTTTGGACAAGCAGTACGGTTTGTATGTAACTCAGGCTACAAGATTGAAGGAGATGAAGAAATGCATTGTTCAGACGATGGTTTTTGGAGTAAAGAGAAACCAAAGTGTGTGGAAATTTCATGCAAATCCCCAGATGTTATAAATGGATCTCCTATATCTCAGAAGATTATTTATAAGGAGAATGAACGATTTCAATATAAATGTAACATGGGTTATGAATACAGTGAAAGAGGAGATGCTGTATGCACTGAATCTGGATGGCGTCCGTTGCCTTCATGTGAAGAAAAATCATGTGATAATCCTTATATTCCAAATGGTGACTACTCACCTTTAAGGATTAAACACAGAACTGGAGATGAAATCACGTACCAGTGTAGAAATGGTTTTTATCCTGCAACCCGGGGAAATACAGCAAAATGCACAAGTACTGGCTGGATACCTGCTCCGAGATGTACCTTGAAATAA
CRIg-L-fH蛋白序列(SEQ ID NO4)
MGRPILEVPESVTGPWKGDVNLPCTYDPLQGYTQVLVKWLVQRGSDPVTIFLRDSSGDHIQQAKYQGRLHVSHKVPGDVSLQLSTLEMDDRSHYTCEVTWQTPDGNQVVRDKITELRVQKSGGGGSGGGGSGGGGEDCNELPPRRNTEILTGSWSDQTYPEGTQAIYKCRPGYRSLGNVIMVCRKGEWVALNPLRKCQKRPCGHPGDTPFGTFTLTGGNVFEYGVKAVYTCNEGYQLLGEINYRECDTDGWTNDIPICEVVKCLPVTAPENGKIVSSAMEPDREYHFGQAVRFVCNSGYKIEGDEEMHCSDDGFWSKEKPKCVEISCKSPDVINGSPISQKIIYKENERFQYKCNMGYEYSERGDAVCTESGWRPLPSCEEKSCDNPYIPNGDYSPLRIKHRTGDEITYQCRNGFYPATRGNTAKCTSTGWIPAPRCTLKStop
实施例2CRIg-fH及CRIg-L-fH与C3活化和降解片段相互作用的动力学分析和亲和力测定
1.仪器与材料:
Biacore T200(GE Healthcare)、Series S Sensor Chip NTA、CRIg-L-fH蛋白溶液、C3活化和降解的蛋白组分(C3b、iC3b、C3c、C3d,Complement Technology)、HBS-N溶液(GEHealthcare)
2.实验方法
表达纯化的CRIg-L-fH用HBS-N running buffer稀释为0.2ug/ml作为配体偶联在NTA芯片上,C3fragments以一系列浓度梯度稀释(如图所示)作为流动的分析物,应用BiacoreT200仪器测定动力学曲线并经过Biacore T200Software v2.02分析。亲和常数、解离常数和平衡解离常数如表1所示。
表1
3.实验结果显示,CRIg-L-fH和CRIg-fH与C3b、iC3b和C3c都有不同程度的结合,但是CRIg-L-fH的结合力更强,因此后续的功能实验和动物模型选用CRIg-L-fH。
实施例3
CRIg-L-fH保护PNH红细胞免受补体替补途径和经典途径诱导的溶血反应
1.仪器与材料:
七例PNH患者红细胞、正常人血清、CVF(1mg/ml,comptech公司)、抗人红细胞多抗(Rockland)、Bio-Tek synergy HT多功能酶标仪(芬兰Labsystems公司)、Minispin台式高速离心机(德国Eppendorf公司)、DK-8D型电热恒温水槽(上海精宏实验设备有限公司)
2.实验方法:
2.1CRIg-L-fH对补体替补途径诱导的PNH红细胞溶血的抑制作用
七例PNH患者末端采血收集红细胞,PBS洗三遍(5000rpm,离心3min),配成4%RBC溶液;200ul反应体系,加入4%RBC25ul(终浓度1%),CRIg-L-fH蛋白溶液倍比稀释后加入体系构建终浓度为0-3μM的系列浓度梯度,CVF(100μg/ml)4μl,正常人血清20ul(10%终浓度),同时设置blank和total lysis的对照,37℃水浴30min,10,000rpm离心1min,取100ul上清,酶标仪检测OD414nm吸光值。
2.2CRIg-L-fH对补体经典途径诱导的PNH红细胞溶血的抑制作用
七例PNH患者末端采血收集红细胞,PBS洗三遍(5,000rpm,离心3min),配成4%RBC溶液;200μl反应体系,加入4%RBC25μl(终浓度1%),CRIg-L-fH蛋白溶液倍比稀释后加入体系构建终浓度为0-3μM的系列浓度梯度,anti-human RBC antibody(5mg/ml)2ul,正常人血清20μl(10%终浓度),同时设置blank和total lysis的对照,37°C水浴30min,10,000rpm离心1min,取100μl上清,酶标仪检测OD414nm吸光值。
2.3统计学处理方法
数据用均数±标准差(mean±SD)表示。图表绘制应用Excel软件。
3.实验结果:
体外溶血实验结果表明,CRIg-L-fH蛋白对补体的替补途径和经典途径诱导的PNH红细胞溶血都有一定的抑制作用,其中对于补体替补途径的抑制作用更为显著。
实施例4
CRIg-L-fH对Thy-1N大鼠肾炎症状的缓解作用
1.仪器与材料:
Bio-Tek synergy HT多功能酶标仪(芬兰Labsystems公司)、激光共聚焦显微镜FV500(日本Olympus公司)、BCA蛋白定量试剂盒(Thermo Fisher)、Cobas6000analyzer(Roche)、SD大鼠、anti-C3b/iC3b-FITC抗体、anti-SC5b-9抗体、anti-His抗体、rabbit anti-mouseIgG-FITC抗体
2.实验方法:
2.1Thy-1大鼠肾炎模型的建立
SD大鼠饲养于SP级动物房,用标准饲料和饮水喂养至约200g体重。大鼠随机分为三组,NRS组腹腔注射正常兔血清(1ml/100g体重),ATS组腹腔注射大鼠胸腺细胞抗血清(1ml/100g体重),CRIg-L-fH/ATS组腹腔注射大鼠胸腺抗血清并尾静脉注射CRIg-L-fH(10mg/kg体重)。
2.2各组大鼠肾炎指标的检测
注射后,三组大鼠饲养于大鼠代谢笼,分别于注射后24、48、72小时尾静脉采集血液并收集每个时间点的24小时尿液。应用全自动生化分析仪检测各时间点各组血清中的尿素氮和肌酐。应用BCA蛋白定量试剂盒检测尿液中的总蛋白含量,应用多功能酶标仪检测尿液中的血红蛋白(OD414nm吸光值)。
2.3免疫荧光检测各组大鼠肾脏冰冻切片的IgG、C3片段、CRIg-L-fH的沉积
乙醚麻醉后颈椎脱臼法处死大鼠,取左侧肾脏,PBS冲洗,液氮短暂固定后,OCT包埋、冰冻切片。4%多聚甲醛固定15min,PBS漂洗。10%正常羊血清封闭,分别用anti-C3b/iC3b、anti-His、anti-SC5b-9抗体4度孵育过夜。次日,PBS漂洗三遍后二抗孵育。PBS漂洗,封片,镜检。
3.实验结果:
CRIg-L-fH治疗的Thy-1N大鼠相比未治疗组血清中的尿素氮和肌酐含量下降,尿液中的蛋白总量和血红蛋白量减少,同时有大量的CRIg-L-fH沉积在肾小球系膜去,并且几乎没有C3b/iC3b的沉积,可见CRIg-L-fH能一定程度的缓解大鼠的Th-1N肾炎症状。
  SEQUENCE LISTING
 
 
<110>  复旦大学附属肿瘤医院
 
 
<120>  靶向特异性补体系统抑制剂、其制备方法及应用
 
 
<130>  201386
 
 
<160>  12   
 
 
<170>  PatentIn version 3.1
 
 
<210>  1
<211>  1278
<212>  DNA
<213>  Artificial
 
 
<400>  1
atgggccgtc ccatcctgga agtgccagag agtgtaacag gaccttggaa aggggatgtg     60
 
aatcttccct gcacctatga ccccctgcaa ggctacaccc aagtcttggt gaagtggctg    120
 
gtacaacgtg gctcagaccc tgtcaccatc tttctacgtg actcttctgg agaccatatc    180
 
cagcaggcaa agtaccaggg ccgcctgcat gtgagccaca aggttccagg agatgtatcc    240
 
ctccaattga gcaccctgga gatggatgac cggagccact acacgtgtga agtcacctgg    300
 
cagactcctg atggcaacca agtcgtgaga gataagatta ctgagctccg tgtccagaaa    360
 
gaagattgca atgaacttcc tccaagaaga aatacagaaa ttctgacagg ttcctggtct    420
 
gaccaaacat atccagaagg cacccaggct atctataaat gccgccctgg atatagatct    480
 
cttggaaatg taataatggt atgcaggaag ggagaatggg ttgctcttaa tccattaagg    540
 
aaatgtcaga aaaggccctg tggacatcct ggagatactc cttttggtac ttttaccctt    600
 
acaggaggaa atgtgtttga atatggtgta aaagctgtgt atacatgtaa tgaggggtat    660
 
caattgctag gtgagattaa ttaccgtgaa tgtgacacag atggatggac caatgatatt    720
 
cctatatgtg aagttgtgaa gtgtttacca gtgacagcac cagagaatgg aaaaattgtc    780
 
agtagtgcaa tggaaccaga tcgggaatac cattttggac aagcagtacg gtttgtatgt    840
 
aactcaggct acaagattga aggagatgaa gaaatgcatt gttcagacga tggtttttgg    900
 
agtaaagaga aaccaaagtg tgtggaaatt tcatgcaaat ccccagatgt tataaatgga    960
 
tctcctatat ctcagaagat tatttataag gagaatgaac gatttcaata taaatgtaac   1020
 
atgggttatg aatacagtga aagaggagat gctgtatgca ctgaatctgg atggcgtccg   1080
 
ttgccttcat gtgaagaaaa atcatgtgat aatccttata ttccaaatgg tgactactca   1140
 
cctttaagga ttaaacacag aactggagat gaaatcacgt accagtgtag aaatggtttt   1200
 
tatcctgcaa cccggggaaa tacagcaaaa tgcacaagta ctggctggat acctgctccg   1260
 
agatgtacct tgaaataa                                                 1278
 
 
<210>  2
<211>  425
<212>  PRT
<213>  Artificial
 
 
<400>  2
 
Met Gly Arg Pro Ile Leu Glu Val Pro Glu Ser Val Thr Gly Pro Trp
1               5                   10                  15     
 
 
Lys Gly Asp Val Asn Leu Pro Cys Thr Tyr Asp Pro Leu Gln Gly Tyr
            20                  25                  30         
 
 
Thr Gln Val Leu Val Lys Trp Leu Val Gln Arg Gly Ser Asp Pro Val
        35                  40                  45             
 
 
Thr Ile Phe Leu Arg Asp Ser Ser Gly Asp His Ile Gln Gln Ala Lys
    50                  55                  60                 
 
 
Tyr Gln Gly Arg Leu His Val Ser His Lys Val Pro Gly Asp Val Ser
65                  70                  75                  80 
 
 
Leu Gln Leu Ser Thr Leu Glu Met Asp Asp Arg Ser His Tyr Thr Cys
                85                  90                  95     
 
 
Glu Val Thr Trp Gln Thr Pro Asp Gly Asn Gln Val Val Arg Asp Lys
            100                 105                 110         
 
 
Ile Thr Glu Leu Arg Val Gln Lys Glu Asp Cys Asn Glu Leu Pro Pro
        115                 120                 125            
 
 
Arg Arg Asn Thr Glu Ile Leu Thr Gly Ser Trp Ser Asp Gln Thr Tyr
    130                 135                 140                 
 
 
Pro Glu Gly Thr Gln Ala Ile Tyr Lys Cys Arg Pro Gly Tyr Arg Ser
145                 150                 155                 160
 
 
Leu Gly Asn Val Ile Met Val Cys Arg Lys Gly Glu Trp Val Ala Leu
                165                 170                 175    
 
 
Asn Pro Leu Arg Lys Cys Gln Lys Arg Pro Cys Gly His Pro Gly Asp
            180                 185                 190        
 
 
Thr Pro Phe Gly Thr Phe Thr Leu Thr Gly Gly Asn Val Phe Glu Tyr
        195                 200                 205            
 
 
Gly Val Lys Ala Val Tyr Thr Cys Asn Glu Gly Tyr Gln Leu Leu Gly
    210                 215                 220                
 
 
Glu Ile Asn Tyr Arg Glu Cys Asp Thr Asp Gly Trp Thr Asn Asp Ile
225                 230                 235                 240
 
 
Pro Ile Cys Glu Val Val Lys Cys Leu Pro Val Thr Ala Pro Glu Asn
                245                 250                 255    
 
 
Gly Lys Ile Val Ser Ser Ala Met Glu Pro Asp Arg Glu Tyr His Phe
            260                 265                 270        
 
 
Gly Gln Ala Val Arg Phe Val Cys Asn Ser Gly Tyr Lys Ile Glu Gly
        275                 280                 285            
 
 
Asp Glu Glu Met His Cys Ser Asp Asp Gly Phe Trp Ser Lys Glu Lys
    290                 295                 300                
 
 
Pro Lys Cys Val Glu Ile Ser Cys Lys Ser Pro Asp Val Ile Asn Gly
305                 310                 315                 320
 
 
Ser Pro Ile Ser Gln Lys Ile Ile Tyr Lys Glu Asn Glu Arg Phe Gln
                325                 330                 335    
 
 
Tyr Lys Cys Asn Met Gly Tyr Glu Tyr Ser Glu Arg Gly Asp Ala Val
            340                 345                 350        
 
 
Cys Thr Glu Ser Gly Trp Arg Pro Leu Pro Ser Cys Glu Glu Lys Ser
        355                 360                 365            
 
 
Cys Asp Asn Pro Tyr Ile Pro Asn Gly Asp Tyr Ser Pro Leu Arg Ile
    370                 375                 380                
 
 
Lys His Arg Thr Gly Asp Glu Ile Thr Tyr Gln Cys Arg Asn Gly Phe
385                 390                 395                 400
 
 
Tyr Pro Ala Thr Arg Gly Asn Thr Ala Lys Cys Thr Ser Thr Gly Trp
                405                 410                 415    
 
 
Ile Pro Ala Pro Arg Cys Thr Leu Lys
            420                 425
 
 
<210>  3
<211>  1323
<212>  DNA
<213>  Artificial
 
 
<400>  3
atgggccgtc ccatcctgga agtgccagag agtgtaacag gaccttggaa aggggatgtg     60
 
aatcttccct gcacctatga ccccctgcaa ggctacaccc aagtcttggt gaagtggctg    120
 
gtacaacgtg gctcagaccc tgtcaccatc tttctacgtg actcttctgg agaccatatc    180
 
cagcaggcaa agtaccaggg ccgcctgcat gtgagccaca aggttccagg agatgtatcc    240
 
ctccaattga gcaccctgga gatggatgac cggagccact acacgtgtga agtcacctgg    300
 
cagactcctg atggcaacca agtcgtgaga gataagatta ctgagctccg tgtccagaaa    360
 
tctggtggcg gtggctccgg cggaggtggg tccggtggcg gcggagaaga ttgcaatgaa    420
 
cttcctccaa gaagaaatac agaaattctg acaggttcct ggtctgacca aacatatcca    480
 
gaaggcaccc aggctatcta taaatgccgc cctggatata gatctcttgg aaatgtaata    540
 
atggtatgca ggaagggaga atgggttgct cttaatccat taaggaaatg tcagaaaagg    600
 
ccctgtggac atcctggaga tactcctttt ggtactttta cccttacagg aggaaatgtg    660
 
tttgaatatg gtgtaaaagc tgtgtataca tgtaatgagg ggtatcaatt gctaggtgag    720
 
attaattacc gtgaatgtga cacagatgga tggaccaatg atattcctat atgtgaagtt    780
 
gtgaagtgtt taccagtgac agcaccagag aatggaaaaa ttgtcagtag tgcaatggaa    840
 
ccagatcggg aataccattt tggacaagca gtacggtttg tatgtaactc aggctacaag    900
 
attgaaggag atgaagaaat gcattgttca gacgatggtt tttggagtaa agagaaacca    960
 
aagtgtgtgg aaatttcatg caaatcccca gatgttataa atggatctcc tatatctcag   1020
 
aagattattt ataaggagaa tgaacgattt caatataaat gtaacatggg ttatgaatac   1080
 
agtgaaagag gagatgctgt atgcactgaa tctggatggc gtccgttgcc ttcatgtgaa   1140
 
gaaaaatcat gtgataatcc ttatattcca aatggtgact actcaccttt aaggattaaa   1200
 
cacagaactg gagatgaaat cacgtaccag tgtagaaatg gtttttatcc tgcaacccgg   1260
 
ggaaatacag caaaatgcac aagtactggc tggatacctg ctccgagatg taccttgaaa   1320
 
taa                                                                 1323
 
 
<210>  4
<211>  440
<212>  PRT
<213>  Artificial
 
 
<400>  4
 
Met Gly Arg Pro Ile Leu Glu Val Pro Glu Ser Val Thr Gly Pro Trp
1               5                   10                  15     
 
 
Lys Gly Asp Val Asn Leu Pro Cys Thr Tyr Asp Pro Leu Gln Gly Tyr
            20                  25                  30         
 
 
Thr Gln Val Leu Val Lys Trp Leu Val Gln Arg Gly Ser Asp Pro Val
        35                  40                  45             
 
 
Thr Ile Phe Leu Arg Asp Ser Ser Gly Asp His Ile Gln Gln Ala Lys
    50                  55                  60                 
 
 
Tyr Gln Gly Arg Leu His Val Ser His Lys Val Pro Gly Asp Val Ser
65                  70                  75                  80 
 
 
Leu Gln Leu Ser Thr Leu Glu Met Asp Asp Arg Ser His Tyr Thr Cys
                85                  90                  95     
 
 
Glu Val Thr Trp Gln Thr Pro Asp Gly Asn Gln Val Val Arg Asp Lys
            100                 105                 110        
 
 
Ile Thr Glu Leu Arg Val Gln Lys Ser Gly Gly Gly Gly Ser Gly Gly
        115                 120                 125            
 
 
Gly Gly Ser Gly Gly Gly Gly Glu Asp Cys Asn Glu Leu Pro Pro Arg
    130                 135                 140                
 
 
Arg Asn Thr Glu Ile Leu Thr Gly Ser Trp Ser Asp Gln Thr Tyr Pro
145                 150                 155                 160
 
 
Glu Gly Thr Gln Ala Ile Tyr Lys Cys Arg Pro Gly Tyr Arg Ser Leu
                165                 170                 175    
 
 
Gly Asn Val Ile Met Val Cys Arg Lys Gly Glu Trp Val Ala Leu Asn
            180                 185                 190        
 
 
Pro Leu Arg Lys Cys Gln Lys Arg Pro Cys Gly His Pro Gly Asp Thr
        195                 200                 205            
 
 
Pro Phe Gly Thr Phe Thr Leu Thr Gly Gly Asn Val Phe Glu Tyr Gly
    210                 215                 220                
 
 
Val Lys Ala Val Tyr Thr Cys Asn Glu Gly Tyr Gln Leu Leu Gly Glu
225                 230                 235                 240
 
 
Ile Asn Tyr Arg Glu Cys Asp Thr Asp Gly Trp Thr Asn Asp Ile Pro
                245                 250                 255    
 
 
Ile Cys Glu Val Val Lys Cys Leu Pro Val Thr Ala Pro Glu Asn Gly
            260                 265                 270        
 
 
Lys Ile Val Ser Ser Ala Met Glu Pro Asp Arg Glu Tyr His Phe Gly
        275                 280                 285            
 
 
Gln Ala Val Arg Phe Val Cys Asn Ser Gly Tyr Lys Ile Glu Gly Asp
    290                 295                 300                
 
 
Glu Glu Met His Cys Ser Asp Asp Gly Phe Trp Ser Lys Glu Lys Pro
305                 310                 315                 320
 
 
Lys Cys Val Glu Ile Ser Cys Lys Ser Pro Asp Val Ile Asn Gly Ser
                325                 330                 335    
 
 
Pro Ile Ser Gln Lys Ile Ile Tyr Lys Glu Asn Glu Arg Phe Gln Tyr
            340                 345                 350        
 
 
Lys Cys Asn Met Gly Tyr Glu Tyr Ser Glu Arg Gly Asp Ala Val Cys
        355                 360                 365            
 
 
Thr Glu Ser Gly Trp Arg Pro Leu Pro Ser Cys Glu Glu Lys Ser Cys
    370                 375                 380                
 
 
Asp Asn Pro Tyr Ile Pro Asn Gly Asp Tyr Ser Pro Leu Arg Ile Lys
385                 390                 395                 400
 
 
His Arg Thr Gly Asp Glu Ile Thr Tyr Gln Cys Arg Asn Gly Phe Tyr
                405                 410                 415    
 
 
Pro Ala Thr Arg Gly Asn Thr Ala Lys Cys Thr Ser Thr Gly Trp Ile
            420                 425                 430        
 
 
Pro Ala Pro Arg Cys Thr Leu Lys
        435                 440
 
 
<210>  5
<211>  1200
<212>  DNA
<213>  Artificial
 
 
<400>  5
atggggatct tactgggcct gctactcctg gggcacctaa cagtggacac ttatggccgt     60
 
cccatcctgg aagtgccaga gagtgtaaca ggaccttgga aaggggatgt gaatcttccc    120
 
tgcacctatg accccctgca aggctacacc caagtcttgg tgaagtggct ggtacaacgt    180
 
ggctcagacc ctgtcaccat ctttctacgt gactcttctg gagaccatat ccagcaggca    240
 
aagtaccagg gccgcctgca tgtgagccac aaggttccag gagatgtatc cctccaattg    300
 
agcaccctgg agatggatga ccggagccac tacacgtgtg aagtcacctg gcagactcct    360
 
gatggcaacc aagtcgtgag agataagatt actgagctcc gtgtccagaa actctctgtc    420
 
tccaagccca cagtgacaac tggcagcggt tatggcttca cggtgcccca gggaatgagg    480
 
attagccttc aatgccaggc tcggggttct cctcccatca gttatatttg gtataagcaa    540
 
cagactaata accaggaacc catcaaagta gcaaccctaa gtaccttact cttcaagcct    600
 
gcggtgatag ccgactcagg ctcctatttc tgcactgcca agggccaggt tggctctgag    660
 
cagcacagcg acattgtgaa gtttgtggtc aaagactcct caaagctact caagaccaag    720
 
actgaggcac ctacaaccat gacatacccc ttgaaagcaa catctacagt gaagcagtcc    780
 
tgggactgga ccactgacat ggatggctac cttggagaga ccagtgctgg gccaggaaag    840
 
agcctgcctg tctttgccat catcctcatc atctccttgt gctgtatggt ggtttttacc    900
 
atggcctata tcatgctctg tcggaagaca tcccaacaag agcatgtcta cgaagcagcc    960
 
agggcacatg ccagagaggc caacgactct ggagaaacca tgagggtggc catcttcgca   1020
 
agtggctgct ccagtgatga gccaacttcc cagaatctgg gcaacaacta ctctgatgag   1080
 
ccctgcatag gacaggagta ccagatcatc gcccagatca atggcaacta cgcccgcctg   1140
 
ctggacacag ttcctctgga ttatgagttt ctggccactg agggcaaaag tgtctgttaa   1200
 
 
<210>  6
<211>  399
<212>  PRT
<213>  Artificial
 
 
<400>  6
 
Met Gly Ile Leu Leu Gly Leu Leu Leu Leu Gly His Leu Thr Val Asp
1               5                   10                  15     
 
 
Thr Tyr Gly Arg Pro Ile Leu Glu Val Pro Glu Ser Val Thr Gly Pro
            20                  25                  30         
 
 
Trp Lys Gly Asp Val Asn Leu Pro Cys Thr Tyr Asp Pro Leu Gln Gly
        35                  40                  45             
 
 
Tyr Thr Gln Val Leu Val Lys Trp Leu Val Gln Arg Gly Ser Asp Pro
    50                  55                  60                 
 
 
Val Thr Ile Phe Leu Arg Asp Ser Ser Gly Asp His Ile Gln Gln Ala
65                  70                  75                  80 
 
 
Lys Tyr Gln Gly Arg Leu His Val Ser His Lys Val Pro Gly Asp Val
                85                  90                  95     
 
 
Ser Leu Gln Leu Ser Thr Leu Glu Met Asp Asp Arg Ser His Tyr Thr
            100                 105                 110        
 
 
Cys Glu Val Thr Trp Gln Thr Pro Asp Gly Asn Gln Val Val Arg Asp
        115                 120                 125            
 
 
Lys Ile Thr Glu Leu Arg Val Gln Lys Leu Ser Val Ser Lys Pro Thr
    130                 135                 140                
 
 
Val Thr Thr Gly Ser Gly Tyr Gly Phe Thr Val Pro Gln Gly Met Arg
145                 150                 155                 160
 
 
Ile Ser Leu Gln Cys Gln Ala Arg Gly Ser Pro Pro Ile Ser Tyr Ile
                165                 170                 175    
 
 
Trp Tyr Lys Gln Gln Thr Asn Asn Gln Glu Pro Ile Lys Val Ala Thr
            180                 185                 190        
 
 
Leu Ser Thr Leu Leu Phe Lys Pro Ala Val Ile Ala Asp Ser Gly Ser
        195                 200                 205            
 
 
Tyr Phe Cys Thr Ala Lys Gly Gln Val Gly Ser Glu Gln His Ser Asp
    210                 215                 220                
 
 
Ile Val Lys Phe Val Val Lys Asp Ser Ser Lys Leu Leu Lys Thr Lys
225                 230                 235                 240
 
 
Thr Glu Ala Pro Thr Thr Met Thr Tyr Pro Leu Lys Ala Thr Ser Thr
                245                 250                 255    
 
 
Val Lys Gln Ser Trp Asp Trp Thr Thr Asp Met Asp Gly Tyr Leu Gly
            260                 265                 270        
 
 
Glu Thr Ser Ala Gly Pro Gly Lys Ser Leu Pro Val Phe Ala Ile Ile
        275                 280                 285             
 
 
Leu Ile Ile Ser Leu Cys Cys Met Val Val Phe Thr Met Ala Tyr Ile
    290                 295                 300                
 
 
Met Leu Cys Arg Lys Thr Ser Gln Gln Glu His Val Tyr Glu Ala Ala
305                 310                 315                 320
 
 
Arg Ala His Ala Arg Glu Ala Asn Asp Ser Gly Glu Thr Met Arg Val
                325                 330                 335    
 
 
Ala Ile Phe Ala Ser Gly Cys Ser Ser Asp Glu Pro Thr Ser Gln Asn
            340                 345                 350        
 
 
Leu Gly Asn Asn Tyr Ser Asp Glu Pro Cys Ile Gly Gln Glu Tyr Gln
        355                 360                 365            
 
 
Ile Ile Ala Gln Ile Asn Gly Asn Tyr Ala Arg Leu Leu Asp Thr Val
    370                 375                 380                
 
 
Pro Leu Asp Tyr Glu Phe Leu Ala Thr Glu Gly Lys Ser Val Cys
385                 390                 395                
 
 
<210>  7
<211>  3696
<212>  DNA
<213>  Artificial
 
 
<400>  7
atgagacttc tagcaaagat tatttgcctt atgttatggg ctatttgtgt agcagaagat     60
 
tgcaatgaac ttcctccaag aagaaataca gaaattctga caggttcctg gtctgaccaa    120
 
acatatccag aaggcaccca ggctatctat aaatgccgcc ctggatatag atctcttgga    180
 
aatgtaataa tggtatgcag gaagggagaa tgggttgctc ttaatccatt aaggaaatgt    240
 
cagaaaaggc cctgtggaca tcctggagat actccttttg gtacttttac ccttacagga    300
 
ggaaatgtgt ttgaatatgg tgtaaaagct gtgtatacat gtaatgaggg gtatcaattg    360
 
ctaggtgaga ttaattaccg tgaatgtgac acagatggat ggaccaatga tattcctata    420
 
tgtgaagttg tgaagtgttt accagtgaca gcaccagaga atggaaaaat tgtcagtagt    480
 
gcaatggaac cagatcggga ataccatttt ggacaagcag tacggtttgt atgtaactca    540
 
ggctacaaga ttgaaggaga tgaagaaatg cattgttcag acgatggttt ttggagtaaa    600
 
gagaaaccaa agtgtgtgga aatttcatgc aaatccccag atgttataaa tggatctcct    660
 
atatctcaga agattattta taaggagaat gaacgatttc aatataaatg taacatgggt    720
 
tatgaataca gtgaaagagg agatgctgta tgcactgaat ctggatggcg tccgttgcct    780
 
tcatgtgaag aaaaatcatg tgataatcct tatattccaa atggtgacta ctcaccttta    840
 
aggattaaac acagaactgg agatgaaatc acgtaccagt gtagaaatgg tttttatcct    900
 
gcaacccggg gaaatacagc aaaatgcaca agtactggct ggatacctgc tccgagatgt    960
 
accttgaaac cttgtgatta tccagacatt aaacatggag gtctatatca tgagaatatg   1020
 
cgtagaccat actttccagt agctgtagga aaatattact cctattactg tgatgaacat   1080
 
tttgagactc cgtcaggaag ttactgggat cacattcatt gcacacaaga tggatggtcg   1140
 
ccagcagtac catgcctcag aaaatgttat tttccttatt tggaaaatgg atataatcaa   1200
 
aatcatggaa gaaagtttgt acagggtaaa tctatagacg ttgcctgcca tcctggctac   1260
 
gctcttccaa aagcgcagac cacagttaca tgtatggaga atggctggtc tcctactccc   1320
 
agatgcatcc gtgtcaaaac atgttccaaa tcaagtatag atattgagaa tgggtttatt   1380
 
tctgaatctc agtatacata tgccttaaaa gaaaaagcga aatatcaatg caaactagga   1440
 
tatgtaacag cagatggtga aacatcagga tcaattacat gtgggaaaga tggatggtca   1500
 
gctcaaccca cgtgcattaa atcttgtgat atcccagtat ttatgaatgc cagaactaaa   1560
 
aatgacttca catggtttaa gctgaatgac acattggact atgaatgcca tgatggttat   1620
 
gaaagcaata ctggaagcac cactggttcc atagtgtgtg gttacaatgg ttggtctgat   1680
 
ttacccatat gttatgaaag agaatgcgaa cttcctaaaa tagatgtaca cttagttcct   1740
 
gatcgcaaga aagaccagta taaagttgga gaggtgttga aattctcctg caaaccagga   1800
 
tttacaatag ttggacctaa ttccgttcag tgctaccact ttggattgtc tcctgacctc   1860
 
ccaatatgta aagagcaagt acaatcatgt ggtccacctc ctgaactcct caatgggaat   1920
 
gttaaggaaa aaacgaaaga agaatatgga cacagtgaag tggtggaata ttattgcaat   1980
 
cctagatttc taatgaaggg acctaataaa attcaatgtg ttgatggaga gtggacaact   2040
 
ttaccagtgt gtattgtgga ggagagtacc tgtggagata tacctgaact tgaacatggc   2100
 
tgggcccagc tttcttcccc tccttattac tatggagatt cagtggaatt caattgctca   2160
 
gaatcattta caatgattgg acacagatca attacgtgta ttcatggagt atggacccaa   2220
 
cttccccagt gtgtggcaat agataaactt aagaagtgca aatcatcaaa tttaattata   2280
 
cttgaggaac atttaaaaaa caagaaggaa ttcgatcata attctaacat aaggtacaga   2340
 
tgtagaggaa aagaaggatg gatacacaca gtctgcataa atggaagatg ggatccagaa   2400
 
gtgaactgct caatggcaca aatacaatta tgcccacctc cacctcagat tcccaattct   2460
 
cacaatatga caaccacact gaattatcgg gatggagaaa aagtatctgt tctttgccaa   2520
 
gaaaattatc taattcagga aggagaagaa attacatgca aagatggaag atggcagtca   2580
 
ataccactct gtgttgaaaa aattccatgt tcacaaccac ctcagataga acacggaacc   2640
 
attaattcat ccaggtcttc acaagaaagt tatgcacatg ggactaaatt gagttatact   2700
 
tgtgagggtg gtttcaggat atctgaagaa aatgaaacaa catgctacat gggaaaatgg   2760
 
agttctccac ctcagtgtga aggccttcct tgtaaatctc cacctgagat ttctcatggt   2820
 
gttgtagctc acatgtcaga cagttatcag tatggagaag aagttacgta caaatgtttt   2880
 
gaaggttttg gaattgatgg gcctgcaatt gcaaaatgct taggagaaaa atggtctcac   2940
 
cctccatcat gcataaaaac agattgtctc agtttaccta gctttgaaaa tgccataccc   3000
 
atgggagaga agaaggatgt gtataaggcg ggtgagcaag tgacttacac ttgtgcaaca   3060
 
tattacaaaa tggatggagc cagtaatgta acatgcatta atagcagatg gacaggaagg   3120
 
ccaacatgca gagacacctc ctgtgtgaat ccgcccacag tacaaaatgc ttatatagtg   3180
 
tcgagacaga tgagtaaata tccatctggt gagagagtac gttatcaatg taggagccct   3240
 
tatgaaatgt ttggggatga agaagtgatg tgtttaaatg gaaactggac ggaaccacct   3300
 
caatgcaaag attctacagg aaaatgtggg ccccctccac ctattgacaa tggggacatt   3360
 
acttcattcc cgttgtcagt atatgctcca gcttcatcag ttgagtacca atgccagaac   3420
 
ttgtatcaac ttgagggtaa caagcgaata acatgtagaa atggacaatg gtcagaacca   3480
 
ccaaaatgct tacatccgtg tgtaatatcc cgagaaatta tggaaaatta taacatagca   3540
 
ttaaggtgga cagccaaaca gaagctttat tcgagaacag gtgaatcagt tgaatttgtg   3600
 
tgtaaacggg gatatcgtct ttcatcacgt tctcacacat tgcgaacaac atgttgggat   3660
 
gggaaactgg agtatccaac ttgtgcaaaa agatag                             3696
 
 
<210>  8
<211>  1231
<212>  PRT
<213>  Artificial
 
 
<400>  8
 
Met Arg Leu Leu Ala Lys Ile Ile Cys Leu Met Leu Trp Ala Ile Cys
1               5                   10                  15     
 
 
Val Ala Glu Asp Cys Asn Glu Leu Pro Pro Arg Arg Asn Thr Glu Ile
            20                  25                  30         
 
 
Leu Thr Gly Ser Trp Ser Asp Gln Thr Tyr Pro Glu Gly Thr Gln Ala
        35                  40                  45             
 
 
Ile Tyr Lys Cys Arg Pro Gly Tyr Arg Ser Leu Gly Asn Val Ile Met
    50                  55                  60                 
 
 
Val Cys Arg Lys Gly Glu Trp Val Ala Leu Asn Pro Leu Arg Lys Cys
65                  70                  75                  80 
 
 
Gln Lys Arg Pro Cys Gly His Pro Gly Asp Thr Pro Phe Gly Thr Phe
                85                  90                  95     
 
 
Thr Leu Thr Gly Gly Asn Val Phe Glu Tyr Gly Val Lys Ala Val Tyr
            100                 105                 110        
 
 
Thr Cys Asn Glu Gly Tyr Gln Leu Leu Gly Glu Ile Asn Tyr Arg Glu
        115                 120                 125            
 
 
Cys Asp Thr Asp Gly Trp Thr Asn Asp Ile Pro Ile Cys Glu Val Val
    130                 135                 140                
 
 
Lys Cys Leu Pro Val Thr Ala Pro Glu Asn Gly Lys Ile Val Ser Ser
145                 150                 155                 160
 
 
Ala Met Glu Pro Asp Arg Glu Tyr His Phe Gly Gln Ala Val Arg Phe
                165                 170                 175    
 
 
Val Cys Asn Ser Gly Tyr Lys Ile Glu Gly Asp Glu Glu Met His Cys
            180                 185                 190        
 
 
Ser Asp Asp Gly Phe Trp Ser Lys Glu Lys Pro Lys Cys Val Glu Ile
        195                 200                 205            
 
 
Ser Cys Lys Ser Pro Asp Val Ile Asn Gly Ser Pro Ile Ser Gln Lys
    210                 215                 220                
 
 
Ile Ile Tyr Lys Glu Asn Glu Arg Phe Gln Tyr Lys Cys Asn Met Gly
225                 230                 235                 240
 
 
Tyr Glu Tyr Ser Glu Arg Gly Asp Ala Val Cys Thr Glu Ser Gly Trp
                245                 250                 255    
 
 
Arg Pro Leu Pro Ser Cys Glu Glu Lys Ser Cys Asp Asn Pro Tyr Ile
            260                 265                 270        
 
 
Pro Asn Gly Asp Tyr Ser Pro Leu Arg Ile Lys His Arg Thr Gly Asp
        275                 280                 285            
 
 
Glu Ile Thr Tyr Gln Cys Arg Asn Gly Phe Tyr Pro Ala Thr Arg Gly
    290                 295                 300                
 
 
Asn Thr Ala Lys Cys Thr Ser Thr Gly Trp Ile Pro Ala Pro Arg Cys
305                 310                 315                 320
 
 
Thr Leu Lys Pro Cys Asp Tyr Pro Asp Ile Lys His Gly Gly Leu Tyr
                325                 330                 335    
 
 
His Glu Asn Met Arg Arg Pro Tyr Phe Pro Val Ala Val Gly Lys Tyr
            340                 345                 350        
 
 
Tyr Ser Tyr Tyr Cys Asp Glu His Phe Glu Thr Pro Ser Gly Ser Tyr
        355                 360                 365            
 
 
Trp Asp His Ile His Cys Thr Gln Asp Gly Trp Ser Pro Ala Val Pro
    370                 375                 380                
 
 
Cys Leu Arg Lys Cys Tyr Phe Pro Tyr Leu Glu Asn Gly Tyr Asn Gln
385                 390                 395                 400
 
 
Asn His Gly Arg Lys Phe Val Gln Gly Lys Ser Ile Asp Val Ala Cys
                405                 410                 415    
 
 
His Pro Gly Tyr Ala Leu Pro Lys Ala Gln Thr Thr Val Thr Cys Met
            420                 425                 430        
 
 
Glu Asn Gly Trp Ser Pro Thr Pro Arg Cys Ile Arg Val Lys Thr Cys
        435                 440                 445            
 
 
Ser Lys Ser Ser Ile Asp Ile Glu Asn Gly Phe Ile Ser Glu Ser Gln
    450                 455                 460                
 
 
Tyr Thr Tyr Ala Leu Lys Glu Lys Ala Lys Tyr Gln Cys Lys Leu Gly
465                 470                 475                 480
 
 
Tyr Val Thr Ala Asp Gly Glu Thr Ser Gly Ser Ile Thr Cys Gly Lys
                485                 490                 495    
 
 
Asp Gly Trp Ser Ala Gln Pro Thr Cys Ile Lys Ser Cys Asp Ile Pro
            500                 505                 510        
 
 
Val Phe Met Asn Ala Arg Thr Lys Asn Asp Phe Thr Trp Phe Lys Leu
        515                 520                 525            
 
 
Asn Asp Thr Leu Asp Tyr Glu Cys His Asp Gly Tyr Glu Ser Asn Thr
    530                 535                 540                
 
 
Gly Ser Thr Thr Gly Ser Ile Val Cys Gly Tyr Asn Gly Trp Ser Asp
545                 550                 555                 560
 
 
Leu Pro Ile Cys Tyr Glu Arg Glu Cys Glu Leu Pro Lys Ile Asp Val
                565                 570                 575    
 
 
His Leu Val Pro Asp Arg Lys Lys Asp Gln Tyr Lys Val Gly Glu Val
            580                 585                 590        
 
 
Leu Lys Phe Ser Cys Lys Pro Gly Phe Thr Ile Val Gly Pro Asn Ser
        595                 600                 605            
 
 
Val Gln Cys Tyr His Phe Gly Leu Ser Pro Asp Leu Pro Ile Cys Lys
    610                 615                 620                
 
 
Glu Gln Val Gln Ser Cys Gly Pro Pro Pro Glu Leu Leu Asn Gly Asn
625                 630                 635                 640
 
 
Val Lys Glu Lys Thr Lys Glu Glu Tyr Gly His Ser Glu Val Val Glu
                645                 650                 655    
 
 
Tyr Tyr Cys Asn Pro Arg Phe Leu Met Lys Gly Pro Asn Lys Ile Gln
            660                 665                 670        
 
 
Cys Val Asp Gly Glu Trp Thr Thr Leu Pro Val Cys Ile Val Glu Glu
        675                 680                 685            
 
 
Ser Thr Cys Gly Asp Ile Pro Glu Leu Glu His Gly Trp Ala Gln Leu
    690                 695                 700                
 
 
Ser Ser Pro Pro Tyr Tyr Tyr Gly Asp Ser Val Glu Phe Asn Cys Ser
705                 710                 715                 720
 
 
Glu Ser Phe Thr Met Ile Gly His Arg Ser Ile Thr Cys Ile His Gly
                725                 730                 735    
 
 
Val Trp Thr Gln Leu Pro Gln Cys Val Ala Ile Asp Lys Leu Lys Lys
            740                 745                 750        
 
 
Cys Lys Ser Ser Asn Leu Ile Ile Leu Glu Glu His Leu Lys Asn Lys
        755                 760                 765            
 
 
Lys Glu Phe Asp His Asn Ser Asn Ile Arg Tyr Arg Cys Arg Gly Lys
    770                 775                 780                
 
 
Glu Gly Trp Ile His Thr Val Cys Ile Asn Gly Arg Trp Asp Pro Glu
785                 790                 795                 800
 
 
Val Asn Cys Ser Met Ala Gln Ile Gln Leu Cys Pro Pro Pro Pro Gln
                805                 810                 815    
 
 
Ile Pro Asn Ser His Asn Met Thr Thr Thr Leu Asn Tyr Arg Asp Gly
            820                 825                 830        
 
 
Glu Lys Val Ser Val Leu Cys Gln Glu Asn Tyr Leu Ile Gln Glu Gly
        835                 840                 845            
 
 
Glu Glu Ile Thr Cys Lys Asp Gly Arg Trp Gln Ser Ile Pro Leu Cys
    850                 855                 860                
 
 
Val Glu Lys Ile Pro Cys Ser Gln Pro Pro Gln Ile Glu His Gly Thr
865                 870                 875                 880
 
 
Ile Asn Ser Ser Arg Ser Ser Gln Glu Ser Tyr Ala His Gly Thr Lys
                885                 890                 895    
 
 
Leu Ser Tyr Thr Cys Glu Gly Gly Phe Arg Ile Ser Glu Glu Asn Glu
            900                 905                 910        
 
 
Thr Thr Cys Tyr Met Gly Lys Trp Ser Ser Pro Pro Gln Cys Glu Gly
        915                 920                 925            
 
 
Leu Pro Cys Lys Ser Pro Pro Glu Ile Ser His Gly Val Val Ala His
    930                 935                 940                
 
 
Met Ser Asp Ser Tyr Gln Tyr Gly Glu Glu Val Thr Tyr Lys Cys Phe
945                 950                 955                 960
 
 
Glu Gly Phe Gly Ile Asp Gly Pro Ala Ile Ala Lys Cys Leu Gly Glu
                965                 970                 975    
 
 
Lys Trp Ser His Pro Pro Ser Cys Ile Lys Thr Asp Cys Leu Ser Leu
            980                 985                 990         
 
 
Pro Ser Phe Glu Asn Ala Ile Pro  Met Gly Glu Lys Lys  Asp Val Tyr
        995                 1000                 1005            
 
 
Lys Ala  Gly Glu Gln Val Thr  Tyr Thr Cys Ala Thr  Tyr Tyr Lys
    1010                 1015                 1020            
 
 
Met Asp  Gly Ala Ser Asn Val  Thr Cys Ile Asn Ser  Arg Trp Thr
    1025                 1030                 1035            
 
 
Gly Arg  Pro Thr Cys Arg Asp  Thr Ser Cys Val Asn  Pro Pro Thr
    1040                 1045                 1050            
 
 
Val Gln  Asn Ala Tyr Ile Val  Ser Arg Gln Met Ser  Lys Tyr Pro
    1055                 1060                 1065            
 
 
Ser Gly  Glu Arg Val Arg Tyr  Gln Cys Arg Ser Pro  Tyr Glu Met
    1070                 1075                 1080            
 
 
Phe Gly  Asp Glu Glu Val Met  Cys Leu Asn Gly Asn  Trp Thr Glu
    1085                 1090                 1095            
 
 
Pro Pro  Gln Cys Lys Asp Ser  Thr Gly Lys Cys Gly  Pro Pro Pro
    1100                 1105                 1110            
 
 
Pro Ile  Asp Asn Gly Asp Ile  Thr Ser Phe Pro Leu  Ser Val Tyr
    1115                 1120                 1125            
 
 
Ala Pro  Ala Ser Ser Val Glu  Tyr Gln Cys Gln Asn  Leu Tyr Gln
    1130                 1135                 1140            
 
 
Leu Glu  Gly Asn Lys Arg Ile  Thr Cys Arg Asn Gly  Gln Trp Ser
    1145                 1150                 1155            
 
 
Glu Pro  Pro Lys Cys Leu His  Pro Cys Val Ile Ser  Arg Glu Ile
    1160                 1165                 1170            
 
 
Met Glu  Asn Tyr Asn Ile Ala  Leu Arg Trp Thr Ala  Lys Gln Lys
    1175                 1180                 1185            
 
 
Leu Tyr  Ser Arg Thr Gly Glu  Ser Val Glu Phe Val  Cys Lys Arg
    1190                 1195                 1200            
 
 
Gly Tyr  Arg Leu Ser Ser Arg  Ser His Thr Leu Arg  Thr Thr Cys
    1205                 1210                 1215            
 
 
Trp Asp  Gly Lys Leu Glu Tyr  Pro Thr Cys Ala Lys  Arg
    1220                 1225                 1230    
 
 
<210>  9
<211>  357
<212>  DNA
<213>  Artificial
 
 
<400>  9
ggccgtccca tcctggaagt gccagagagt gtaacaggac cttggaaagg ggatgtgaat     60
 
cttccctgca cctatgaccc cctgcaaggc tacacccaag tcttggtgaa gtggctggta    120
 
caacgtggct cagaccctgt caccatcttt ctacgtgact cttctggaga ccatatccag    180
 
caggcaaagt accagggccg cctgcatgtg agccacaagg ttccaggaga tgtatccctc    240
 
caattgagca ccctggagat ggatgaccgg agccactaca cgtgtgaagt cacctggcag    300
 
actcctgatg gcaaccaagt cgtgagagat aagattactg agctccgtgt ccagaaa       357
 
 
<210>  10
<211>  119
<212>  PRT
<213>  Artificial
 
 
<400>  10
 
Gly Arg Pro Ile Leu Glu Val Pro Glu Ser Val Thr Gly Pro Trp Lys
1               5                   10                  15     
 
 
Gly Asp Val Asn Leu Pro Cys Thr Tyr Asp Pro Leu Gln Gly Tyr Thr
            20                  25                  30         
 
 
Gln Val Leu Val Lys Trp Leu Val Gln Arg Gly Ser Asp Pro Val Thr
        35                  40                  45             
 
 
Ile Phe Leu Arg Asp Ser Ser Gly Asp His Ile Gln Gln Ala Lys Tyr
    50                  55                  60                 
 
 
Gln Gly Arg Leu His Val Ser His Lys Val Pro Gly Asp Val Ser Leu
65                  70                  75                  80 
 
 
Gln Leu Ser Thr Leu Glu Met Asp Asp Arg Ser His Tyr Thr Cys Glu
                85                  90                  95     
 
 
Val Thr Trp Gln Thr Pro Asp Gly Asn Gln Val Val Arg Asp Lys Ile
            100                 105                 110        
 
 
Thr Glu Leu Arg Val Gln Lys
        115                
 
 
<210>  11
<211>  915
<212>  DNA
<213>  Artificial
 
 
<400>  11
gaagattgca atgaacttcc tccaagaaga aatacagaaa ttctgacagg ttcctggtct     60
 
gaccaaacat atccagaagg cacccaggct atctataaat gccgccctgg atatagatct    120
 
cttggaaatg taataatggt atgcaggaag ggagaatggg ttgctcttaa tccattaagg    180
 
aaatgtcaga aaaggccctg tggacatcct ggagatactc cttttggtac ttttaccctt    240
 
acaggaggaa atgtgtttga atatggtgta aaagctgtgt atacatgtaa tgaggggtat    300
 
caattgctag gtgagattaa ttaccgtgaa tgtgacacag atggatggac caatgatatt    360
 
cctatatgtg aagttgtgaa gtgtttacca gtgacagcac cagagaatgg aaaaattgtc    420
 
agtagtgcaa tggaaccaga tcgggaatac cattttggac aagcagtacg gtttgtatgt    480
 
aactcaggct acaagattga aggagatgaa gaaatgcatt gttcagacga tggtttttgg    540
 
agtaaagaga aaccaaagtg tgtggaaatt tcatgcaaat ccccagatgt tataaatgga    600
 
tctcctatat ctcagaagat tatttataag gagaatgaac gatttcaata taaatgtaac    660
 
atgggttatg aatacagtga aagaggagat gctgtatgca ctgaatctgg atggcgtccg    720
 
ttgccttcat gtgaagaaaa atcatgtgat aatccttata ttccaaatgg tgactactca    780
 
cctttaagga ttaaacacag aactggagat gaaatcacgt accagtgtag aaatggtttt    840
 
tatcctgcaa cccggggaaa tacagcaaaa tgcacaagta ctggctggat acctgctccg    900
 
agatgtacct tgaaa                                                     915
 
 
<210>  12
<211>  305
<212>  PRT
<213>  Artificial
 
 
<400>  12
 
Glu Asp Cys Asn Glu Leu Pro Pro Arg Arg Asn Thr Glu Ile Leu Thr
1               5                   10                  15     
 
 
Gly Ser Trp Ser Asp Gln Thr Tyr Pro Glu Gly Thr Gln Ala Ile Tyr
            20                  25                  30         
 
 
Lys Cys Arg Pro Gly Tyr Arg Ser Leu Gly Asn Val Ile Met Val Cys
        35                  40                  45             
 
 
Arg Lys Gly Glu Trp Val Ala Leu Asn Pro Leu Arg Lys Cys Gln Lys
    50                  55                  60                 
 
 
Arg Pro Cys Gly His Pro Gly Asp Thr Pro Phe Gly Thr Phe Thr Leu
65                  70                  75                  80 
 
 
Thr Gly Gly Asn Val Phe Glu Tyr Gly Val Lys Ala Val Tyr Thr Cys
                85                  90                  95     
 
 
Asn Glu Gly Tyr Gln Leu Leu Gly Glu Ile Asn Tyr Arg Glu Cys Asp
            100                 105                 110        
 
 
Thr Asp Gly Trp Thr Asn Asp Ile Pro Ile Cys Glu Val Val Lys Cys
        115                 120                 125            
 
 
Leu Pro Val Thr Ala Pro Glu Asn Gly Lys Ile Val Ser Ser Ala Met
    130                 135                 140                
 
 
Glu Pro Asp Arg Glu Tyr His Phe Gly Gln Ala Val Arg Phe Val Cys
145                 150                 155                 160
 
 
Asn Ser Gly Tyr Lys Ile Glu Gly Asp Glu Glu Met His Cys Ser Asp
                165                 170                 175     
 
 
Asp Gly Phe Trp Ser Lys Glu Lys Pro Lys Cys Val Glu Ile Ser Cys
            180                 185                 190        
 
 
Lys Ser Pro Asp Val Ile Asn Gly Ser Pro Ile Ser Gln Lys Ile Ile
        195                 200                 205             
 
 
Tyr Lys Glu Asn Glu Arg Phe Gln Tyr Lys Cys Asn Met Gly Tyr Glu
    210                 215                 220                
 
 
Tyr Ser Glu Arg Gly Asp Ala Val Cys Thr Glu Ser Gly Trp Arg Pro
225                 230                 235                 240
 
 
Leu Pro Ser Cys Glu Glu Lys Ser Cys Asp Asn Pro Tyr Ile Pro Asn
                245                 250                 255    
 
 
Gly Asp Tyr Ser Pro Leu Arg Ile Lys His Arg Thr Gly Asp Glu Ile
            260                 265                 270        
 
 
Thr Tyr Gln Cys Arg Asn Gly Phe Tyr Pro Ala Thr Arg Gly Asn Thr
        275                 280                 285            
 
 
Ala Lys Cys Thr Ser Thr Gly Trp Ile Pro Ala Pro Arg Cys Thr Leu
    290                 295                 300                
 
 
Lys
305
 
 

Claims (10)

1.一种蛋白质,其特征在于,该蛋白质具有靶向抑制补体激活的功能,并且该蛋白质的氨基酸序列
(a)含有CRIg胞外功能区和补体抑制功能区;
或者
(b)由CRIg胞外功能区、补体抑制功能区以及两者间的连接物组成;
上述补体抑制功能区是factor H、C1-INH、C4BP、factor I、S-protein、Clusterin、CD35/CR1、CD46/MCP、CD55/DAF、CD59或者CRIg的功能片段或全长。
2.如权利要求1所述的蛋白质,其特征在于,该蛋白质的氨基酸序列如SEQ ID NO2或者SEQ ID NO4所示。
3.一种核酸,其特征在于,该核酸序列编码权利要求1所述的蛋白质。
4.如权利要求3所述的核酸,其特征在于,该核酸的碱基序列如SEQ ID NO1或者SEQID NO3所示。
5.一种载体,其特征在于,含有权利要求3所述的核酸。
6.权利要求1所述的蛋白质的制备方法,其特征在于,利用基因工程技术,连接CRIg胞外区、补体抑制功能区的蛋白质多肽;
所述的CRIg胞外区蛋白质的氨基酸序列如SEQ ID NO10所示;
所述的补体抑制功能区是factor H、C1-INH、C4BP、factor I、S-protein、Clusterin、CD35/CR1、CD46/MCP、CD55/DAF、CD59或者CRIg的功能片段或全长。
7.权利要求1所述的蛋白质在制备靶向抑制补体激活的药物中的用途。
8.权利要求1所述的蛋白质在制备保护阵发性夜间血红蛋白尿患者血细胞或其他疾病中遭受补体攻击的细胞免受补体攻击的药物中的用途。
9.一种药物,其特征在于,所述药物的活性成分为权利要求1所述的蛋白质。
10.如权利要求9所述的药物,其特征在于,该药物是针剂。
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CN113583107A (zh) * 2021-07-28 2021-11-02 复旦大学 CRIg功能区蛋白变体及其应用
CN113637084A (zh) * 2020-05-11 2021-11-12 上海康景生物医药科技有限公司 生物大分子靶向特异性补体抑制剂及其制备方法与应用
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CN110128547B (zh) * 2019-05-07 2022-07-22 北京康普美特创新医药科技有限责任公司 人源靶向补体抑制物蛋白mCR2-fH及应用
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CN113637084A (zh) * 2020-05-11 2021-11-12 上海康景生物医药科技有限公司 生物大分子靶向特异性补体抑制剂及其制备方法与应用
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CN113583107B (zh) * 2021-07-28 2023-11-10 复旦大学 CRIg功能区蛋白变体及其应用
CN114920849A (zh) * 2022-03-09 2022-08-19 安徽省立医院(中国科学技术大学附属第一医院) 一种靶向补体免疫抑制蛋白及其构建方法及应用

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