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Genes Dev:抑制 MCL-1 蛋白有助治疗淋巴癌

2014-01-10 koo 生物360

日前,来自澳大利亚沃尔特与伊丽莎·霍尔医学研究所(Walter and Eliza Hall Institute)的科学家发现了一种很有前景的方案,可用于治疗由一种最常见致癌蛋白所导致的癌症。相关论文发表在了近期出版的《基因与发育》(Gene and Development)杂志上。 MYC 是一种最常见的致癌蛋白,其生长、扩散会导致细胞发生癌变,形成多种癌症。在 7


日前,来自澳大利亚沃尔特与伊丽莎·霍尔医学研究所(Walter and Eliza Hall Institute)的科学家发现了一种很有前景的方案,可用于治疗由一种最常见致癌蛋白所导致的癌症。相关论文发表在了近期出版的《基因与发育》(Gene and Development)杂志上。【原文下载】

MYC 是一种最常见的致癌蛋白,其生长、扩散会导致细胞发生癌变,形成多种癌症。在 70% 的人类癌症中,包括许多白血病和淋巴瘤,其 MYC 水平异乎寻常的高,这会迫使细胞反常地高速生长而导致癌变。研究中,科学家们审查了有着高水平 MYC 的细胞是怎样生存和生长的,结果发现,如果缺乏一种叫做 MCL-1 的蛋白质,高水平 MYC 的淋巴瘤就无法长期存活,这种 MCL-1 蛋白质能让细胞长久生存。

这项研究以他们30多年的研究为基础,研究人员一直在追查 MYC 怎样驱动癌症发展、怎样调控正常细胞和癌变细胞生存。研究人员指出:“多年前我们就知道, BCL-2 蛋白质家族的某些成员能提高细胞的生存能力,并与 MYC 合作,共同促进癌症发展。但至今我们还不知道在 BCL-2 家族中,哪个成员对 MYC 驱动癌症的存活和生长最为重要。

我们发现,通过灭活一种叫做 MCL-1 的蛋白,能杀死有高水平 MYC 的淋巴瘤细胞。而且令人兴奋的是,与健康细胞相比,淋巴瘤细胞对于 MCL-1 功能的降低更敏感得多。这表明在将来的医疗中,遏制 MCL-1 能有效治疗那些 MYC 表达水平高的癌症,而其副作用对体内正常细胞来说是可以承受的。”

研究人员表示,这一发现令人兴奋, MCL-1 抑制剂有希望很快用于临床,“在多种血液癌症和固体肿瘤中, MCL-1 水平也很高,所以瞄准 MCL-1 开发潜在抗癌药也有吸引力”。

原文出处:

Gemma L. Kelly, Stephanie Grabow, Stefan P. Glaser, Leah Fitzsimmons,Brandon J. Aubrey, Toru Okamoto, Liz J. Valente, Mikara Robati, Lin Tai,W. Douglas Fairlie, Erinna F. Lee, Mikael S. Lindstrom, Klas G. Wiman,David C.S. Huang, Philippe Bouillet, Martin Rowe, Alan B. Rickinson,Marco J. Herold, and Andreas Strasser. Targeting of MCL-1 kills MYC-driven mouse and human lymphomas even when they bear mutations in p53. Genes Dev. January 1, 2014; doi:10.1101/gad.232009.113【原文下载】

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    2014-07-14 fzwish20000
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    2014-12-19 cy0324
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