Science:让所有类型癌细胞都减缓生长的方法

2017-05-27 佚名 生物探索

5月26日的Science上发表了Rochester大学研究人员发现的一种新方法,可以减缓所有类型癌症细胞的快速生长特征。该方法通过靶向Tudor-SN蛋白能够抑制快速增长的癌细胞,已经在实验室中进行了肾癌和宫颈癌细胞的研究。



癌症是一种极其复杂的疾病,但其定义相当简单:细胞的异常、不可控制地生长。来自美国Rochester大学RNA生物学研究中心的研究人员发现了一种新方法,可以减缓所有类型癌症快速生长的细胞特征。这一发现发表在5月26日的Science上,由美国国立卫生研究院资助,已经在实验室中进行了肾癌和宫颈癌细胞的研究,但在人们身上的应用还有很长的路要走。不过这些可能是未来治疗方案的基础。

癌症:细胞周期出了问题

所有细胞都经历“细胞周期”——一系列的事件最终达到有序的细胞生长和分裂。在癌症中,细胞周期不正常;细胞分裂不停止并侵入周围组织。

研究人员发现了一种叫做Tudor-SN的蛋白质,在细胞周期的“准备”阶段是非常重要的。当科学家们利用基因编辑技术CRISPR-Cas9敲除了这种蛋白,细胞则需要更长的时间来准备分裂。Tudor-SN的丢失减慢了细胞周期。

第一作者Reyad A. Elbarbary博士说“我们知道Tudor-SN在癌细胞中比健康细胞更丰富,而我们的研究表明,靶向这种蛋白能够抑制快速增长的癌细胞。”

Elbarbary补充道,那些已经现有了的阻断Tudor-SN的化合物可以成为治疗的很好候选药物。

所发现的蛋白能给细胞生长加刹车

通讯作者Lynne E. Maquat是一位在RNA生物学研究上世界知名的专家。Maquat的团队发现Tudor-SN通过调控microRNAs影响细胞周期。

当Tudor-SN从人类细胞中被敲除时,数十个microRNA的水平上升。这些microRNA的存在对促进细胞生长的基因起到了刹车作用。随着这些基因处于“关闭”位置,细胞从分裂准备阶段到细胞分裂阶段(G1-S期)的变化更缓慢了。

Maquat说“因为癌细胞是有缺陷的细胞周期,研究参与细胞周期的因素是肿瘤治疗的一个有希望的途径。”

Elbarbary博士已经为靶向Tudor-SN用于癌症的治疗和预防方法提出了专利申请。他们下一步研究包括了解Tudor-SN如何与其他分子和蛋白质一起工作,以便科学家能够找出最合适的药物来靶向它。

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  26 May 2017: Vol. 356, Issue 6340, pp. 859-862. DOI: 10.1126/science.aai9372.

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    2017-06-15 laoli

    学习了!谢谢!

    0

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    2017-05-29 yxch36
  3. [GetPortalCommentsPageByObjectIdResponse(id=210878, encodeId=ce072108e8b6, content=学习了!谢谢!, beContent=null, objectType=article, channel=null, level=null, likeNumber=50, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/ajNVdqHZLLC1BMzZWdMSPQWuib6BtQGicK8ygGBM6YakpfkRc67soFSuKbZr86enL1KggQZEZbgWSeicJibafmYfQ3AibicIHMwwicmDShfRFvvI38/0, createdBy=272a110164, createdName=laoli, createdTime=Thu Jun 15 06:23:14 CST 2017, time=2017-06-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1252255, encodeId=291b1252255cd, content=<a href='/topic/show?id=3efee1519b2' target=_blank style='color:#2F92EE;'>#癌细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71519, encryptionId=3efee1519b2, topicName=癌细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4cea26, createdName=yxch36, createdTime=Mon May 29 00:12:00 CST 2017, time=2017-05-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1375591, encodeId=958e13e559167, content=<a href='/topic/show?id=2949159989d' target=_blank style='color:#2F92EE;'>#SCIE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15998, encryptionId=2949159989d, topicName=SCIE)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=17a3387, createdName=jichang, createdTime=Mon May 29 00:12:00 CST 2017, time=2017-05-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=203597, encodeId=d02020359ea9, content=学习了,谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=550d2008262, createdName=luominglian113, createdTime=Sun May 28 13:38:41 CST 2017, time=2017-05-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=203192, encodeId=3d1920319259, content=好文章学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib06iaV3D9Tg5K1RUfOKQohib4bXhDtxVgOA9VcKY1LUZkCOmr0v3WupxANz2ibibNHkdevtSruvrhyI29IjXdtvUV48/0, createdBy=6ff82057534, createdName=139****5926, createdTime=Sat May 27 10:36:54 CST 2017, time=2017-05-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=203182, encodeId=95b320318257, content=努力学习!有用的, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Sat May 27 10:08:55 CST 2017, time=2017-05-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=203169, encodeId=71e820316945, content=学习一下知识了, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160718/IMG578C993D395567540.jpg, createdBy=59b81918946, createdName=flysky120, createdTime=Sat May 27 09:51:53 CST 2017, time=2017-05-27, status=1, ipAttribution=)]
    2017-05-29 jichang
  4. [GetPortalCommentsPageByObjectIdResponse(id=210878, encodeId=ce072108e8b6, content=学习了!谢谢!, beContent=null, objectType=article, channel=null, level=null, likeNumber=50, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/ajNVdqHZLLC1BMzZWdMSPQWuib6BtQGicK8ygGBM6YakpfkRc67soFSuKbZr86enL1KggQZEZbgWSeicJibafmYfQ3AibicIHMwwicmDShfRFvvI38/0, createdBy=272a110164, createdName=laoli, createdTime=Thu Jun 15 06:23:14 CST 2017, time=2017-06-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1252255, encodeId=291b1252255cd, content=<a href='/topic/show?id=3efee1519b2' target=_blank style='color:#2F92EE;'>#癌细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71519, encryptionId=3efee1519b2, topicName=癌细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4cea26, createdName=yxch36, createdTime=Mon May 29 00:12:00 CST 2017, time=2017-05-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1375591, encodeId=958e13e559167, content=<a href='/topic/show?id=2949159989d' target=_blank style='color:#2F92EE;'>#SCIE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15998, encryptionId=2949159989d, topicName=SCIE)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=17a3387, createdName=jichang, createdTime=Mon May 29 00:12:00 CST 2017, time=2017-05-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=203597, encodeId=d02020359ea9, content=学习了,谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=550d2008262, createdName=luominglian113, createdTime=Sun May 28 13:38:41 CST 2017, time=2017-05-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=203192, encodeId=3d1920319259, content=好文章学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib06iaV3D9Tg5K1RUfOKQohib4bXhDtxVgOA9VcKY1LUZkCOmr0v3WupxANz2ibibNHkdevtSruvrhyI29IjXdtvUV48/0, createdBy=6ff82057534, createdName=139****5926, createdTime=Sat May 27 10:36:54 CST 2017, time=2017-05-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=203182, encodeId=95b320318257, content=努力学习!有用的, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Sat May 27 10:08:55 CST 2017, time=2017-05-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=203169, encodeId=71e820316945, content=学习一下知识了, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160718/IMG578C993D395567540.jpg, createdBy=59b81918946, createdName=flysky120, createdTime=Sat May 27 09:51:53 CST 2017, time=2017-05-27, status=1, ipAttribution=)]
    2017-05-28 luominglian113

    学习了,谢

    0

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    2017-05-27 139****5926

    好文章学习了

    0

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    2017-05-27 忠诚向上

    努力学习!有用的

    0

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    2017-05-27 flysky120

    学习一下知识了

    0

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