[发明专利]胸腺素α原在制备预防和治疗肝癌药物中的应用无效
申请号: | 201210086166.0 | 申请日: | 2012-03-28 |
公开(公告)号: | CN102580059A | 公开(公告)日: | 2012-07-18 |
发明(设计)人: | 周克夫;王世媛;粟华;蔡报伟;朱苑婷 | 申请(专利权)人: | 厦门大学;厦门伯赛基因转录技术有限公司 |
主分类号: | A61K38/22 | 分类号: | A61K38/22;A61P35/00 |
代理公司: | 厦门南强之路专利事务所 35200 | 代理人: | 马应森 |
地址: | 361005 *** | 国省代码: | 福建;35 |
权利要求书: | 查看更多 | 说明书: | 查看更多 |
摘要: | |||
搜索关键词: | 胸腺 制备 预防 治疗 肝癌 药物 中的 应用 | ||
技术领域
本发明涉及胸腺素α原,尤其是涉及一种胸腺素α原在制备预防和治疗肝癌药物中的用途。
背景技术
1984年,Haritos等从大鼠胸腺分离出一种含有111个氨基酸残基的多肽,由于其N端含已发现的所有胸腺素α原家族成员的序列,因此命名为胸腺素α原。人ProTα由109个氨基酸残基组成,与大鼠ProTα的序列相比,有6个位点的差异,包括4个位点的替代和2个位点的缺失(1、Haritos AA,Goodall GJ,Horecker BL,Prothymosin alpha:isolation and properties of the major immunoreactive form of thymosin alphal in rat thymus.Proc Natl Acad Sci U S A,1984,81:1008;2、Haritos AA.Alpha-thymosins:relationships in structure,distribution,and function.Isozymes Curr Top Biol Med Res 1987,14:123-152;3、Goodall GJ,Dominguez F,Horecker BL.Molecular cloning of cDNA for human prothymosin alpha.Proc Natl Acad Sci U S A 1986;83(23):8926-8928;4、Pan LX,Haritos AA,Wideman J,Komiyama T,Chang M,Stein S et al.Human prothymosin alpha:amino acid sequence and immunologic properties.Arch Biochem Biophys 1986;250(1):197-201)。
1985年,Haritos等(5、Komiyama T,Pan LX,Haritos AA,et al.The primary structure of rat parathymosin.Proc Natl Acad Sci U S A 1986;83(5):1242-1245)发现大鼠ProTA能增强小鼠抗白色念珠菌(Candida albicans)感染的能力,1986年Pan又发现ProTα能刺激转移抑制因子(MIF)的释放,其作用比Tα1强10~20倍(6、Haritos AA,r.Blacher,S.Stein,J..Horecker.Parathymosin alpha:a peptide from rat tissues with structural homology to prothymosin alpha.Proc Natl Acad Sci U S A,82:1050-1053;7、Pan LX,Haritos AA,Wideman J,et al.Human prothymosin alpha:amino acid sequence and immunologic properties.Arch Biochem Biophys 1986;250(1):197-201),1987年,Sαlvin等发现腹腔注射ProTα能增强RF/J小鼠产生抗体的能力,锌能加强这种作用,能使青年大鼠和老年大鼠的细胞免疫和体液免疫都增强(8、Salvin SB,Horecker BL,Pan LX,Rabin BS.The effect of dietary zinc and prothymosin alpha on cellular immune responses of RF/J mice.Clin Immunol Immunopathol 1987;43(3):281-288。)。Papanastasiou(9、Papanastasiou M,Baxevanis CN,Papamichail M.Promotion of murine antitumor activity by prothymosin alpha treatment:I.Induction of tumoricidal peritoneal cells producing high levels of tumour necrosis factor alpha.Cancer Immunol Immunother 1992;35(2):145-150。)发现,CBA/2小鼠如果腹腔接种肿瘤细胞,一般8-12天之内产生腹水,10-14天后死亡,20%的经过ProTα处理的小鼠不产生腹水,并能够使不产生腹水中的40%-60%的小鼠寿命可以延长到70天。当腹腔注射ProTα时,能够增强巨噬细胞、提高N K,LA K细胞的活性(10、Lopez-Rodriguez JL,Cordero OJ,Sarandeses C,.Interleukin-2 killer cells:in vitro evaluation of combination with prothymosin alpha.Lymphokine Cytokine Res 1994;13(3):175-182;11、Baxevanis CN,Gritzapis AD,Dedoussis GV,.Induction of lymphokine-activated killer activity in mice by prothymosin alpha.Cancer Immunol Immunother 1994;38(4):281-286);增强MHC限制的细胞免疫(12、Baxevanis CN,Thanos D,Reclos GJ,J et al.Prothymosin alpha enhances human and murine MHC class II surface antigen expression and messenger RNA accumulation.J Immunol 1992;148(7):1979-1984;13、Baxevanis CN,Thanos D,Reclos GJ,et al.Prothymosin alpha enhances human and murine MHC class II surface antigen expression and messenger RNA accumulation.J Immunol 1992;148(7):1979-1984),抑制系统性红斑狼疮(14、Baxevanis CN,Reclos CJ,Papamichail M et al.Prothymosin alpha restores the depressed autologous and allogenic mixed lymphocyte responses in patient with systemic lupus erythematosus.Immuopharmaco immunotoxico,1987,9:429。),促进IL-2,MIF的分泌和TN F-α,IFN-γ的合成;促进IL-2受体的表达(15、Baxevanis CN,Gritzapis AD,Spanakos G,.Induction of tumor-specific T lymphocyte responses in vivo by prothymosin alpha.Cancer Immunol Immunother 1995;40(6):410-418;16、Lopez-Rodriguez JL,Cordero OJ,Sarandeses C,.Interleukin-2 killer cells:in vitro evaluation of combination with prothymosin alpha.Lymphokine Cytokine Res 1994;13(3):175-182;17、Baxevanis CN,Gritzapis AD,Dedoussis GV,.Induction of lymphokine-activated killer activity in mice by prothymosin alpha.Cancer Immunol Immunother 1994;38(4):281-286;18、Voutsas IF,Baxevanis CN,Gritzapis AD,et al.Synergy between interleukin-2 and prothymosin alpha for the increased generation of cytotoxic T lymphocytes against autologous human carcinomas.Cancer Immunol Immunother 2000;49(8):449-458;19、Cordero OJ,Sarandeses CS,Lopez JL,et al.Prothymosin alpha enhances IL-2receptor expression in norma human T-lymphoctyes.Int J Immunpharmacol,1991,13:1059。),从而产生非特异性肿瘤杀伤作用,同时,诱导肿瘤特异性细胞毒T细胞(CD8+)和辅助性T细胞(CD4+)的特异性抗肿瘤作用。ProTα在疾病早期可以刺激淋巴因子激活的杀伤细胞(lymphokien activated killer cells,LAK)活性,它是通过增加淋巴细胞与靶细胞的结合进而增加IFN-γ和IL-2的分泌来实现的(20、Lopez-Rodriguez JL,Cordero OJ,Sarandeses C,.Interleukin-2 killer cells:in vitro evaluation of combination with prothymosin alpha.Lymphokine Cytokine Res 1994;13(3):175-182;21、Baxevanis CN,Gritzapis AD,Dedoussis GV,.Induction of lymphokine-activated killer activity in mice by prothymosin alpha.Cancer Immunol Immunother 1994;38(4):281-286)。单独使用ProTα时可以刺激TNF-α和IL-2的分泌,如果与IL-2联合使用时,可增加NK细胞CD25及CD18/11黏附分子的表达。在IFN-γ存在的条件下,ProTα主要通过增加CD54(细胞黏附分子配体)的表达,刺激单核细胞与集结的肿瘤细胞的结合,达到清除肿瘤细胞的目的(22、Baxevanis CN,Gritzapis AD,Spanakos G,.Induction of tumor-specific T lymphocyte responses in vivo by prothymosin alpha.Cancer Immunol Immunother 1995;40(6):410-418;23、Lopez-Rodriguez JL,Cordero OJ,Sarandeses C,.Interleukin-2 killer cells:in vitro evaluation of combination with prothymosin alpha.Lymphokine Cytokine Res 1994;13(3):175-182;24、Baxevanis CN,Gritzapis AD,Dedoussis GV,.Induction of lymphokine-activated killer activity in mice by prothymosin alpha.Cancer Immunol Immunother1994;38(4):281-286;25、Voutsas IF,Baxevanis CN,Gritzapis AD,et al.Synergy between interleukin-2 and prothymosin alpha for the increased generation of cytotoxic T lymphocytes against autologous human carcinomas.Cancer Immunol Immunother 2000,49(8):449-458)。近来研究表明,ProTα在DNA疫苗中还可以起到疫苗佐剂的效果(26、Jin Y,Cao C,Li P,Liu X,Huang W,Li C et al.Boosting immune response to hepatitis B DNA vaccine by coadministration of Prothymosin alpha-expressing plasmid.Clin Diagn Lab Immunol 2005;12(12):1364-1369;27、Shiau AL,Chen CC,Yo YT,Chu CY,Wang SY,Wu CL.Enhancement of humoral and cellular immune responses by an oral Salmonella choleraesuis vaccine expressing porcine prothymosin alpha.Vaccine 2005;23(48-49):5563-5571。)。
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