Cell Reports:一个癌症相关通路居然是男性生殖的关键

2016-10-27 王英 生物通

导语:10月18日在《Cell Reports》上发表的一项研究中,研究生殖科学的科学家发现,一个与癌症有关的蛋白质网络,也对男性生育能力和健康后代的产生,有着重要的影响。10月18日在《Cell Reports》上发表的一项研究中,研究生殖科学的科学家发现,一个与癌症有关的蛋白质网络,也对男性生育能力和健康后代的产生,有着重要的影响。这项研究是由辛辛那提儿童医院医学中心的Satoshi Name

导语:10月18日在《Cell Reports》上发表的一项研究中,研究生殖科学的科学家发现,一个与癌症有关的蛋白质网络,也对男性生育能力和健康后代的产生,有着重要的影响。



10月18日在《Cell Reports》上发表的一项研究中,研究生殖科学的科学家发现,一个与癌症有关的蛋白质网络,也对男性生育能力和健康后代的产生,有着重要的影响。

这项研究是由辛辛那提儿童医院医学中心的Satoshi Namewaka博士及其同事们完成的,关注性染色体的精确的表观遗传调控,这对于制造男性精子的生殖细胞来说,是非常重要的。

表观遗传学包括由基因表达修改(而不是遗传密码的改变)引起的生物体变化。科学家们越来越多地研究生殖的表观遗传学,以了解环境因素或生活方式对生育或后代的遗传特征有何影响。

目前的这项研究着眼于范可尼贫血(FA)通路,这是由21个蛋白组成的一条通路,正常工作时能够修复身体细胞中的DNA损伤。FA信号通路中的突变可能导致严重的贫血、遗传不稳定和不同癌症。但目前的这项研究还揭示了它们对于确保健康人生殖所起的作用。

本文第一作者、辛辛那提儿童医院医学中心生殖科学部的Namewaka指出:“我们的数据显示,FA通路调节着生殖细胞中的表观遗传学编程,并对生殖有影响。理解FA蛋白在这个调控过程中的确切作用,对于理解FA相关的生育缺陷以及FA在DNA修复中的作用,也是非常重要的。”

这项研究是一个更大的生殖科学项目的一部分,该项目探索不孕不育、早产、出生缺陷和流产的原因——在世界上这都是仍然存在的主要健康问题。

Namekawa研究小组报道称,在减数分裂过程中——产生遗传健康的精子的一个关键生物学步骤,FA蛋白积聚在男性的性染色体上。某些FA蛋白与一种称为RNF8的酶合作,调节着组蛋白,其在细胞内缠绕在DNA周围形成线轴。

研究人员通过在八种不同的小鼠模型中研究减数分裂,测试了FA-DDR(DNA损伤反应)网络对这一过程的调控。这些小鼠缺乏DDR蛋白,包括一些范可尼贫血蛋白。这让研究团队揭示了一条通路中的FA-DDR蛋白如何起作用,来调节男性的性染色体,这是生殖科学的一个重要发现,因为破坏了的性染色体调控可导致男性不育。

数据表明,缺乏FA-DDR蛋白的转基因小鼠是不育的,并在减数分裂过程中在男性的性染色体调控中存在显著缺陷。

科学家们将继续深入研究,在减数分裂过程中,FA蛋白和其他DNA损伤反应蛋白如何以及何时相互作用,以及这如何影响实验室小鼠模型的精子生产和生育能力。

Oskar蛋白,已知对生殖细胞的发育是至关重要的,去年,来自欧洲分子生物学实验室(EMBL)的科学家,解开了Oskar蛋白两部分的结构。这一研究结果发表在2015年七月十六日的《Cell Reports》,也使研究人员能够首次阐述这一知之甚少的蛋白质的功能。

原始出处:

Alavattam KG1, Kato Y1, Sin HS1, Maezawa S1, Kowalski IJ1, Zhang F2, Pang Q2, Andreassen PR2, Namekawa SH3.Elucidation of the Fanconi Anemia Protein Network in Meoisis and Its Function in the Regulation of Histone Modifications.Cell Rep. 2016 Oct 18

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    2016-12-22 维他命
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    2016-11-21 gospel007

    科学是无穷的

    0

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  6. [GetPortalCommentsPageByObjectIdResponse(id=1869596, encodeId=e691186959697, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Sun Apr 02 21:10:00 CST 2017, time=2017-04-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1959855, encodeId=55fd195985525, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=23, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3ff68, createdName=维他命, createdTime=Thu Dec 22 08:10:00 CST 2016, time=2016-12-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1982696, encodeId=6b4c198269640, content=<a href='/topic/show?id=8ac0e02482e' target=_blank style='color:#2F92EE;'>#男性生殖#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=70248, encryptionId=8ac0e02482e, topicName=男性生殖)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=30bd35, createdName=一叶知秋, createdTime=Sun Jan 15 02:10:00 CST 2017, time=2017-01-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=157325, encodeId=802115e3255b, content=科学是无穷的, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=9b2a1732571, createdName= gospel007, createdTime=Mon Nov 21 21:24:05 CST 2016, time=2016-11-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1953141, encodeId=6d701953141f1, content=<a href='/topic/show?id=d441e1440e8' target=_blank style='color:#2F92EE;'>#癌症相关#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71440, encryptionId=d441e1440e8, topicName=癌症相关)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e9a6357, createdName=xiangyuzhou971, createdTime=Mon Sep 11 22:10:00 CST 2017, time=2017-09-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=153289, encodeId=c114153289d0, content=希望会更好的造福人类!, beContent=null, objectType=article, channel=null, level=null, likeNumber=48, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160914/IMG57D82E721DB581755.jpg, createdBy=4fc81933929, createdName=明天会更好!, createdTime=Fri Nov 04 09:00:18 CST 2016, time=2016-11-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=153288, encodeId=f6f615328830, content=希望会更好的造福人类!, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160914/IMG57D82E721DB581755.jpg, createdBy=4fc81933929, createdName=明天会更好!, createdTime=Fri Nov 04 09:00:03 CST 2016, time=2016-11-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=152090, encodeId=75b515209018, content=好好看下, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Sun Oct 30 07:21:57 CST 2016, time=2016-10-30, status=1, ipAttribution=)]
    2016-11-04 明天会更好!

    希望会更好的造福人类!

    0

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    2016-11-04 明天会更好!

    希望会更好的造福人类!

    0

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    2016-10-30 忠诚向上

    好好看下

    0

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