[发明专利]HER2蛋白核酸适配子、复合体、组合物及其用途有效
申请号: | 201210044833.9 | 申请日: | 2012-02-24 |
公开(公告)号: | CN103290017A | 公开(公告)日: | 2013-09-11 |
发明(设计)人: | 杨先达;刘喆 | 申请(专利权)人: | 中国医学科学院基础医学研究所 |
主分类号: | C12N15/115 | 分类号: | C12N15/115;A61K47/26;A61K45/00;A61K49/00;A61K49/10;A61P35/00 |
代理公司: | 北京戈程知识产权代理有限公司 11314 | 代理人: | 程伟 |
地址: | 100005*** | 国省代码: | 北京;11 |
权利要求书: | 查看更多 | 说明书: | 查看更多 |
摘要: | |||
搜索关键词: | her2 蛋白 核酸 配子 复合体 组合 及其 用途 | ||
技术领域
本发明涉及HER2蛋白核酸适配子、复合、组合物及其用途。
背景技术
乳腺癌是女性常见的恶性肿瘤之一,其中大约20%至30%的患者为人类表皮生长因子受体-2(ERBB2,HER2)阳性(King CR,Kraus MH,Aaronson SA(1985)Amplification of a novel v-erbB-related gene in a human mammary carcinoma.Science 229:974-976)。HER2阳性的患者同其他乳腺癌病人相比,肿瘤恶性程度更高,进展更快,更容易复发和远处转移,远期生存率更差(Garrett JT,Arteaga CL(2011)Resistance to HER2-directed antibodies and tyrosine kinase inhibitors:mechanisms and clinical implications.Cancer Biol Ther 11:793-800.;Nahta R,O′Regan RM(2010)Evolving strategies for overcoming resistance to HER2-directed therapy:targeting the PI3K/Akt/mTOR pathway.Clin Breast Cancer 10 Suppl 3:S72-78.;Cooke T,Reeves J,Lanigan A,Stanton P(2001)HER2 as a prognostic and predictive marker for breast cancer.Ann Oncol 12Suppl 1:S23-28.),而且此类病人通常对内分泌治疗不敏感,预后较差(Wright C,Nicholson S,Angus B,Sainsbury JR,Farndon J,et al.(1992)Relationship between c-erbB-2 protein product expression and response to endocrine therapy in advanced breast cancer.Br J Cancer 65:118-121.;Ariazi EA,Clark GM,Mertz JE(2002)Estrogen-related receptor alpha and estrogen-related receptor gamma associate with unfavorable and favorable biomarkers,respectively,in human breast cancer.Cancer Res 62:6510-6518.)。如果只接受手术、放疗、化疗和内分泌治疗这些常规的综合治疗,HER2阳性乳腺癌患者的生存时间仅为HER2阴性患者的一半(Press MF,Bernstein L,Thomas PA,Meisner LF,Zhou JY,et al.(1997)HER-2/neu gene amplification characterized by fluorescence in situ hybridization:poor prognosis in node-negative breast carcinomas.J Clin Oncol 15:2894-2904.)。鉴于此,开发HER2阳性乳腺癌的新型治疗,如肿瘤靶向治疗是无法避免的一个趋势。生物靶向治疗的特点是集中作用于肿瘤组织、细胞或基因,选择性地杀灭肿瘤细胞,而对人体正常组织细胞损伤较小。因此,与常规治疗方法相比,靶向治疗不仅可以提高疗效,还可以降低副作用的发生率。曲妥珠单抗(赫赛汀)是全球第一种被批准应用于临床靶向HER2(ERBB2,人体表皮生长因子受体2)的人源化单克隆抗体。它能特异性作用于乳腺癌细胞表面的HER2受体,并诱导人体免疫细胞杀伤肿瘤细胞。然而,有研究报道,长期应用曲妥珠单抗容易发生获得性耐受(Garrett JT,Arteaga CL(2011)Resistance to HER2-directed antibodies and tyrosine kinase inhibitors:mechanisms and clinical implications.Cancer Biol Ther 11:793-800.;Nahta R,O′Regan RM(2010)Evolving strategies for overcoming resistance to HER2-directed therapy:targeting the PI3K/Akt/mTOR pathway.Clin Breast Cancer 10 Suppl 3:S72-78.;Cobleigh MA,Vogel CL,Tripathy D,Robert NJ,Scholl S,et al.(1999)Multinational study of the efficacy and safety of humanized anti-HER2 monoclonal antibody in women who have HER2-overexpressing metastatic breast cancer that has progressed after chemotherapy for metastatic disease.J Clin Oncol 17:2639-2648.;Vogel CL,Cobleigh MA,Tripathy D,Gutheil JC,Harris LN,et al.(2002)Efficacy and safety of trastuzumab as a single agent in first-line treatment of HER2-overexpressing metastatic breast cancer.J Clin Oncol 20:719-726.;Raguz S,Yague E(2008)Resistance to chemotherapy:new treatments and novel insights into an old problem.Br J Cancer 99:387-391.;Shattuck DL,Miller JK,Carraway KL,3rd,Sweeney C(2008)Met receptor contributes to trastuzumab resistance of Her2-overexpressing breast cancer cells.Cancer Res 68:1471-1477)。而且,赫赛汀抗体价格昂贵,成本高,增加了发展中国家患者的负担。这限制了其在乳腺癌及其他肿瘤治疗中的应用。
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