Science:科学家在癌细胞中安装“刹车”,有力控制癌细胞疯长!

2017-05-26 Heather_z727 来宝网

癌症虽然是一种极其复杂的疾病,但是它的定义却相当简单,那就是异常和不可控的细胞的增长。罗彻斯特大学RNA生物学中心的研究人员们已经确定了一种减缓癌细胞疯长的新科技,这种方法适用于所有类型的癌症。报告结果发表于今天的《科学》杂志上,此次研究由美国国立卫生研究院资助。虽然还有很长一段路要走,但是这一科技无疑为今后的治疗指明了方向。



【减缓癌细胞生长的新方法】癌症虽然是一种极其复杂的疾病,但是它的定义却相当简单,那就是异常和不可控的细胞的增长。罗彻斯特大学RNA生物学中心的研究人员们已经确定了一种减缓癌细胞疯长的新科技,这种方法适用于所有类型的癌症。报告结果发表于今天的《科学》杂志上,此次研究由美国国立卫生研究院资助。虽然还有很长一段路要走,但是这一科技无疑为今后的治疗指明了方向。

癌症:细胞周期出差错

所有细胞都有细胞周期,是一系列有序的细胞生长和分裂。在癌症中,细胞周期紊乱,细胞分裂不停止或者侵入周围组织。在此次研究中,研究人员发现一种在细胞周期准备阶段和分裂阶段都扮演着重要角色的蛋白质—Tudor-SN蛋白质。当科学家们从细胞中消除这种蛋白质,细胞需要更长的时间来准备分裂。Tudor-SN的缺失可以减缓细胞周期。

研究人员表示:“我们发现比起健康的细胞,在癌细胞中Tudor-SN蛋白质数量惊人,因此如果根据这一特性,可能有望减缓癌细胞的生长速度。”

在癌细胞中安装刹车

研究人员发现Tudor-SN蛋白质通过调节小分子核糖核酸来影响细胞周期,如果把Tudor-SN蛋白质去除,那么小分子核糖核酸水平就会增加。那么促进小分子核糖核酸的水平就等于在促进肿瘤生长的基因中安装了刹车,有力控制肿瘤疯长。

研究人员表示:“由于癌细胞存在着错误的细胞周期,因此利用这一特性来对抗癌症是很有前景的治疗方法。”

原始出处:

Reyad A. Elbarbary, Keita Miyoshi, Jason R. Myers, et al. Tudor-SN–mediated endonucleolytic decay of human cell microRNAs promotes G1/S phase transition. Science (2017). science.sciencemag.org/cgi/doi/10.1126/science.aai9372.

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    2017-05-28 yxch36
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    2017-05-28 jichang
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    2017-05-26 luominglian113

    学习了,谢谢分享

    0

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    2017-05-26 189****7206

    学习了谢谢分享。

    0

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    2017-05-26 changjiu

    希望早日应用临床

    0

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    2017-05-26 1e1a50a1m36(暂无匿称)

    在促进肿瘤生长的基因中安装了刹车,有力控制肿瘤疯长。

    0

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