Baidu
map

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。

版权声明:
本网站所有内容来源注明为“梅斯医学”或“MedSci原创”的文字、图片和音视频资料,版权均属于梅斯医学所有。非经授权,任何媒体、网站或个人不得转载,授权转载时须注明来源为“梅斯医学”。其它来源的文章系转载文章,或“梅斯号”自媒体发布的文章,仅系出于传递更多信息之目的,本站仅负责审核内容合规,其内容不代表本站立场,本站不负责内容的准确性和版权。如果存在侵权、或不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。
在此留言
评论区 (6)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=66713, encodeId=d61966e13f0, content=真的不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=153, 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=123, 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=142, 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=150, 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=141, 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=123, 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=153, 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=123, 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=142, 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=150, 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=141, 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=123, 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=153, 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=123, 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=142, 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=150, 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=141, 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=123, 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=153, 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=123, 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=142, 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=150, 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=141, 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=123, 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=153, 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=123, 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=142, 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=150, 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=141, 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=123, 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

  6. [GetPortalCommentsPageByObjectIdResponse(id=66713, encodeId=d61966e13f0, content=真的不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=153, 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=123, 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=142, 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=150, 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=141, 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=123, 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 老段

    突破

    0

相关资讯

计划生育法草案2016年1月1日起施行,禁止买卖精子卵子受精卵和胚胎

中国网12月21日讯(记者魏婧)十二届全国人大常委会第十八次会议12月21日至27日在北京召开,此次会议初次审议了人口与计划生育法修正案草案。草案提出,本修正案自2016年1月1日起施行。 提倡生育两子女、符合条件者可再生育 修正案草案修改了人口与计划生育法第十八条,明确全国统一实施全面两孩政策,提倡一对夫妻生育两个子女,地方可以结合实际对允许再生育子女的情形制定具体办法。 具体规定为,提倡

Biol Reprod:万万没想到,吃核桃还可以改善精子质量!

先前有研究表明,长期规律的吃核桃可降低前列腺癌风险。一项对117名西式饮食的年轻男性的研究(UCLA)表明,每天吃一把核桃还可以提高男性生育能力!约一半的研究对象平均每天吃75g核桃,连续12周,余下参与者作为对照组。研究者发现12周后,与对照组相比,每天吃核桃的参与者生育能力得到明显改善——尤其是精子的形态、运动性和活力!医学专家称,不孕是指不采取避孕措施。频繁从事性交至少1年,但仍不能怀孕的状

Fertil Steril:通过分析信号蛋白评价精子质量的研究

目的:确定精液基本参数与信号蛋白表达与活性之间的关系。设计:人精子的体外研究。机构:学术研究所。对象:对307名男子提供精液样本进行常规分析。干预:无主要观察指标:基本精液分析参数跟踪:包括精子DNA碎片(SDF),75种蛋白激酶的表达水平,在人精子中的18种信号蛋白的磷酸化/分裂模式。结果:结果表明,几种蛋白质的磷酸化水平(Bad, GSK-3beta, HSP27, JNK/SAPK, mTO

Hum Reprod Update:自然受孕中的精子选择对于提高辅助生殖结局的启发

背景:在自然受孕中,只有很少的精子可以到达输卵管壶腹部并在此受精。这细胞群体是经过筛选的一组细胞,因为只有活力精子才能穿过宫颈粘液,获得初始能量并进入女性生殖道。而在一些动物实验研究中发现精子由生殖道选择,并在子宫中恢复,并且输卵管有非常高的受精率,但这并不是一个普遍性的发现。另外,还有一些物种在精子选择方面的辨识力较弱,而且畸形精子同样可以到达输卵管。相反,人类辅助生殖技术(ART)确利用更随机

Nat Commun:精子运动模式的进化

  图片来自:www.telegraph.co.uk 最新一期的Nature Communications上的一项研究显示,与开阔环境中相比,人类精子在靠近一个表面时,游的更快更直。这可能反映出适应狭窄生殖系统的进化策略。 大多数生物的精子拥有长尾巴,就是一种鞭毛。精子通过螺旋形地扑打自己的长尾巴来向前进。在水生动物中,这样的游动方法让精子可以穿过水域,找到自己的归宿——卵子。但是

Baidu
map
Baidu
map
Baidu
map