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科学家首次获得具有功能的精子细胞

2016-03-01 周琪等 《细胞—干细胞》

近日,以中科院动物研究所周琪院士为首,南京医科大学沙家豪教授和中科院动物研究所赵小阳教授(现南方医科大学教授)参加的合作团队,首次实现干细胞体外减数分裂获得具有功能的精子细胞,相关成果发表在2月25日的《细胞—干细胞》上。 该团队致力于利用干细胞技术研究配子发生障碍等生殖医学问题,利用基因编辑技术纠正遗传突变,可以使无精子症小鼠恢复生育能力。但这个过程需要将原始生殖细胞移植到睾丸中继续分化,而其

近日,以中科院动物研究所周琪院士为首,南京医科大学沙家豪教授和中科院动物研究所赵小阳教授(现南方医科大学教授)参加的合作团队,首次实现干细胞体外减数分裂获得具有功能的精子细胞,相关成果发表在2月25日的《细胞—干细胞》上。

该团队致力于利用干细胞技术研究配子发生障碍等生殖医学问题,利用基因编辑技术纠正遗传突变,可以使无精子症小鼠恢复生育能力。但这个过程需要将原始生殖细胞移植到睾丸中继续分化,而其中可能会残留少量的多能性干细胞混合在原始生殖细胞中,经过移植后可能有致瘤的风险,因此在人类中的研究以及未来的临床应用都存在问题。

那是否有可能在体外实现减数分裂过程呢?这一问题是生殖发育研究领域科学家的一个梦想,但由于减数分裂过程本身极为复杂,受到机体的多种信号调控,多年来没有大的突破。

据了解,该团队结合干细胞技术、基因编辑技术等,精心设计了一个研究方案,经过两年多的尝试,分步解决了其中的主要问题,建立了一个全新的生殖细胞体外分化系统,使小鼠胚胎干细胞体外分化获得精子。

与之前的研究不同的是,该研究首次在体外重现了生殖细胞的减数分裂过程,与体内减数分裂过程基本类似,其所获得的精子具有受精能力,能够获得健康的后代,该技术有望帮助无精子症男性获得后代。到目前为止,该技术已经在项目内多个研究组得到重复,产生了数十只小鼠后代,这些小鼠发育良好,并且可以正常繁殖下一代。

赵小阳教授提出,该研究实现了生殖发育领域的一个重大突破,为人类生殖细胞体外分化奠定了理论基础,为解决人类不孕不育问题提供了新的思路。该技术避免了原始生殖细胞体内移植的步骤,回避了移植过程可能引起的致瘤风险,具有良好的应用前景。由于该研究使得体外研究哺乳动物减数分裂成为可能,从而为研究者提供了一个新的研究平台,将加速减数分裂的机制研究和针对不孕不育症的规模化药物筛选。

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  1. [GetPortalCommentsPageByObjectIdResponse(id=66713, encodeId=d61966e13f0, content=真的不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=92, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=fdc91679416, createdName=doctorxia120, createdTime=Wed Mar 02 00:31:00 CST 2016, time=2016-03-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66517, encodeId=9b146651ed0, content=牛逼, beContent=null, objectType=article, channel=null, level=null, likeNumber=101, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160301/IMG56D53216887587291.jpg, createdBy=3c131694128, createdName=破风4392, createdTime=Tue Mar 01 14:13:00 CST 2016, time=2016-03-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66488, encodeId=53f6664885f, content=很不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=122, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=078f1661649, createdName=wei834766788, createdTime=Tue Mar 01 12:48:00 CST 2016, time=2016-03-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66486, encodeId=7fb566486fb, content=有很好, beContent=null, objectType=article, channel=null, level=null, likeNumber=126, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Tue Mar 01 12:47:00 CST 2016, time=2016-03-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66487, encodeId=0cf96648e3e, content=继续, beContent=null, objectType=article, channel=null, level=null, likeNumber=72, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Tue Mar 01 12:47:00 CST 2016, time=2016-03-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66419, encodeId=b5fd66419fe, content=突破, beContent=null, objectType=article, channel=null, level=null, likeNumber=103, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2d331664955, createdName=老段, createdTime=Tue Mar 01 09:42:00 CST 2016, time=2016-03-01, status=1, ipAttribution=)]
    2016-03-02 doctorxia120

    真的不错

    0

  2. [GetPortalCommentsPageByObjectIdResponse(id=66713, encodeId=d61966e13f0, content=真的不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=92, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=fdc91679416, createdName=doctorxia120, createdTime=Wed Mar 02 00:31:00 CST 2016, time=2016-03-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66517, encodeId=9b146651ed0, content=牛逼, beContent=null, objectType=article, channel=null, level=null, likeNumber=101, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160301/IMG56D53216887587291.jpg, createdBy=3c131694128, createdName=破风4392, createdTime=Tue Mar 01 14:13:00 CST 2016, time=2016-03-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66488, encodeId=53f6664885f, content=很不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=122, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=078f1661649, createdName=wei834766788, createdTime=Tue Mar 01 12:48:00 CST 2016, time=2016-03-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66486, encodeId=7fb566486fb, content=有很好, beContent=null, objectType=article, channel=null, level=null, likeNumber=126, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Tue Mar 01 12:47:00 CST 2016, time=2016-03-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66487, encodeId=0cf96648e3e, content=继续, beContent=null, objectType=article, channel=null, level=null, likeNumber=72, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Tue Mar 01 12:47:00 CST 2016, time=2016-03-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66419, encodeId=b5fd66419fe, content=突破, beContent=null, objectType=article, channel=null, level=null, likeNumber=103, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2d331664955, createdName=老段, createdTime=Tue Mar 01 09:42:00 CST 2016, time=2016-03-01, status=1, ipAttribution=)]
    2016-03-01 破风4392

    牛逼

    0

  3. [GetPortalCommentsPageByObjectIdResponse(id=66713, encodeId=d61966e13f0, content=真的不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=92, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=fdc91679416, createdName=doctorxia120, createdTime=Wed Mar 02 00:31:00 CST 2016, time=2016-03-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66517, encodeId=9b146651ed0, content=牛逼, beContent=null, objectType=article, channel=null, level=null, likeNumber=101, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160301/IMG56D53216887587291.jpg, createdBy=3c131694128, createdName=破风4392, createdTime=Tue Mar 01 14:13:00 CST 2016, time=2016-03-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66488, encodeId=53f6664885f, content=很不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=122, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=078f1661649, createdName=wei834766788, createdTime=Tue Mar 01 12:48:00 CST 2016, time=2016-03-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66486, encodeId=7fb566486fb, content=有很好, beContent=null, objectType=article, channel=null, level=null, likeNumber=126, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Tue Mar 01 12:47:00 CST 2016, time=2016-03-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66487, encodeId=0cf96648e3e, content=继续, beContent=null, objectType=article, channel=null, level=null, likeNumber=72, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Tue Mar 01 12:47:00 CST 2016, time=2016-03-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66419, encodeId=b5fd66419fe, content=突破, beContent=null, objectType=article, channel=null, level=null, likeNumber=103, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2d331664955, createdName=老段, createdTime=Tue Mar 01 09:42:00 CST 2016, time=2016-03-01, status=1, ipAttribution=)]
    2016-03-01 wei834766788

    很不错

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=66713, encodeId=d61966e13f0, content=真的不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=92, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=fdc91679416, createdName=doctorxia120, createdTime=Wed Mar 02 00:31:00 CST 2016, time=2016-03-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66517, encodeId=9b146651ed0, content=牛逼, beContent=null, objectType=article, channel=null, level=null, likeNumber=101, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160301/IMG56D53216887587291.jpg, createdBy=3c131694128, createdName=破风4392, createdTime=Tue Mar 01 14:13:00 CST 2016, time=2016-03-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66488, encodeId=53f6664885f, content=很不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=122, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=078f1661649, createdName=wei834766788, createdTime=Tue Mar 01 12:48:00 CST 2016, time=2016-03-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66486, encodeId=7fb566486fb, content=有很好, beContent=null, objectType=article, channel=null, level=null, likeNumber=126, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Tue Mar 01 12:47:00 CST 2016, time=2016-03-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66487, encodeId=0cf96648e3e, content=继续, beContent=null, objectType=article, channel=null, level=null, likeNumber=72, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Tue Mar 01 12:47:00 CST 2016, time=2016-03-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66419, encodeId=b5fd66419fe, content=突破, beContent=null, objectType=article, channel=null, level=null, likeNumber=103, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2d331664955, createdName=老段, createdTime=Tue Mar 01 09:42:00 CST 2016, time=2016-03-01, status=1, ipAttribution=)]
    2016-03-01 忠诚向上

    有很好

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=66713, encodeId=d61966e13f0, content=真的不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=92, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=fdc91679416, createdName=doctorxia120, createdTime=Wed Mar 02 00:31:00 CST 2016, time=2016-03-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66517, encodeId=9b146651ed0, content=牛逼, beContent=null, objectType=article, channel=null, level=null, likeNumber=101, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160301/IMG56D53216887587291.jpg, createdBy=3c131694128, createdName=破风4392, createdTime=Tue Mar 01 14:13:00 CST 2016, time=2016-03-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66488, encodeId=53f6664885f, content=很不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=122, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=078f1661649, createdName=wei834766788, createdTime=Tue Mar 01 12:48:00 CST 2016, time=2016-03-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66486, encodeId=7fb566486fb, content=有很好, beContent=null, objectType=article, channel=null, level=null, likeNumber=126, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Tue Mar 01 12:47:00 CST 2016, time=2016-03-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66487, encodeId=0cf96648e3e, content=继续, beContent=null, objectType=article, channel=null, level=null, likeNumber=72, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Tue Mar 01 12:47:00 CST 2016, time=2016-03-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66419, encodeId=b5fd66419fe, content=突破, beContent=null, objectType=article, channel=null, level=null, likeNumber=103, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2d331664955, createdName=老段, createdTime=Tue Mar 01 09:42:00 CST 2016, time=2016-03-01, status=1, ipAttribution=)]
    2016-03-01 忠诚向上

    继续

    0

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    2016-03-01 老段

    突破

    0

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