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class="r3777b active" id="shownews"><h1 class="s4bbcd title">分子细胞卓越中心等在Rett综合征致病机理研究中获进展</h1><sup dir="3ffccf"></sup><time lang="a04a55"></time><tt draggable="dc9cad"></tt><div dropzone="56703b" class="tfbba9 met_hits"><var dropzone="b2acf7"></var><area date-time="a72d58"></area><map dir="ed079b"></map><div date-time="2ff7fb" class='uc191a metjiathis'><bdo lang="dfb6f2"></bdo><dfn draggable="f27046"></dfn><font dropzone="2cb06c"></font><div dir="e9e08f" class="ve409f jiathis_style"><span class="w53912 jiathis_txt">分享到：</span><a class="xcea45 jiathis_button_icons_1"></a><a class="y7e8b7 jiathis_button_icons_2"></a><a class="z71581 jiathis_button_icons_3"></a><a class="a67cc9 jiathis_button_icons_4"></a><a href="http://www.jiathis.com/share" class="b8a72f jiathis jiathis_txt jtico jtico_jiathis" target="_blank"></a></div><script type="text/javascript" src="http://v3.jiathis.com/code/jia.js?uid=669840136" charset="utf-8"></script></div>&nbsp;&nbsp;来源：<a href="http://www.darrenjbennett.com/">ag网游官方网站</a>&nbsp;&nbsp;更新时间：2022-08-28 16:01:23&nbsp;&nbsp;【<a href="javascript:window.print()">打印此页</a>】&nbsp;&nbsp;【<a href="javascript:self.close()">关闭</a>】</div><ins date-time="3af0ae"></ins><small dir="bec17a"></small><sup lang="8d5ea7"></sup><div lang="6db5a7" class="ca3f56 editor"> class=TRS_Editor><p>　　近日，分细中国科学院分子细胞科学卓越创新中心（生物化学与细胞生物学研究所）惠静毅团队与上海交通大学医学院附属新华医院黄旲团队合作完成的胞卓病机最新研究成果以<em>Rett Syndrome Linked to Defects in Forming the MeCP2/Rbfox/LASR Complex in Mouse Models</em>为题发表在<em>Nature Communications</em>上。该工作发现MeCP2（methyl-CpG binding protein 2）具有通过相分离组装超大剪接复合物的越中新功能，并揭示了Rett综合征（Rett syndrome）小鼠中mRNA异常剪接的综合征致展机制。</p><p>　　Rett综合征是理研一种以女孩患者为主的神经发育紊乱，临床表现有手部刻板动作、究中智力低下、获进自闭障碍等。分细1999年，胞卓病机美国Huda Y. Zoghbi实验室报道了MeCP2基因突变导致Rett综合征。越中目前，综合征致展尚无针对这一疾病的理研有效治疗手段。在过去二十多年对Rett综合征的究中研究中发现，MeCP2蛋白能够广泛地结合在染色体上，获进拥有很多蛋白质结合伴侣，分细受其转录调控的基因数目多但变化幅度较小，这些都给认识MeCP2蛋白的分子功能以及Rett综合征发病机理带来了困难。</p><p>　　为了深入理解MeCP2的分子功能，研究人员首先利用优化的细胞组分生化分离方法，通过IP/MS方法发现MeCP2是Rbfox/LASR（Large Assembly of Splicing Regulators）剪接复合物的一个新组分。有意思的是，MeCP2可以作为脚手架蛋白负责这一复合物的组装。在MeCP2 KO和T158M小鼠中，MeCP2/Rbfox/LASR复合物发生解离，导致Rbfox和LASR组分结合靶基因pre-mRNA减弱，改变了突触传递相关基因Neurexin和Neuroligin等的可变剪接。此外，研究人员还发现MeCP2蛋白在体内、体外具有促进液-液相分离的能力，MeCP2突变后相分离能力减弱，并失去与Rbfox蛋白发生共相分离的能力。在MeCP2 KO和T158M小鼠的大脑皮层中，Rbfox形成的puncta数目和大小减少，Rbfox与LASR其他组分共定位也减少。这些结果建立了MeCP2相分离能力受损与Rbfox/LASR复合物解离的功能联系。</p><p>　　该工作将Rbfox/LASR剪接调控复合物与Rett综合征联系起来，报道了MeCP2具有通过相分离组装超大蛋白质复合物调控mRNA剪接的功能机制，并且为Rett综合征致病机理的研究提供了新的思路。</p><p>　　论文链接&nbsp;</p><p><img draggable="88d3e8" width="600" height="292" style="border-left-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-top-width: 0px" alt="" uploadpic="https://www.cas.cn/syky/202110/W020211026643773083633.jpg" oldsrc="https://www.cas.cn/syky/202110/W020211026643773083633.jpg" src="./https://www.cas.cn/syky/202110/W020211026643773083633.jpg" /></p><p>MeCP2突变后相分离能力减弱，MeCP2/Rbfox/LASR复合物在Rett综合征小鼠中发生解离</p></div><time draggable="86def5"></time><tt dropzone="018a9e"></tt><var date-time="5cda36"></var><div dropzone="e7f3a1" class="d42bd5 clear"></div></div><area dir="ad2fba"></area><map lang="74748c"></map><bdo draggable="8b65b4"></bdo><div date-time="6f61ac" class="e66154 met_page">上一篇：<a href="http://www.darrenjbennett.com/html/22a899970.html">中国西北干旱区荒漠植物叶片热值研究取得进展</a><br />下一篇：<a href="http://www.darrenjbennett.com/html/34a899959.html">大气所在室内环境氨气的变化和来源研究中取得进展</a></div><h4 class="f20e17 related"><span>相关文章</span></h4><dfn dropzone="a602e5"></dfn><font date-time="075847"></font><ins dir="7bc580"></ins><div dir="df123b" class='gd1a7d relatedlist'><small lang="8d5b1c"></small><sup draggable="1d726b"></sup><time dropzone="f9bd07"></time><ul class='hbd69b list-none metlist'><li class="i86a85 list"><a href="http://www.darrenjbennett.com/html/26e899967.html">遗传发育所揭示下丘脑正中隆起衰老的分子特征</a></li><li class="j78fcc list"><a href="http://www.darrenjbennett.com/html/31b899962.html">植物所利用根系解剖结构揭示草原植物根系功能</a></li><li class="k7207f list"><a href="http://www.darrenjbennett.com/html/64c899929.html">海洋所等揭示地幔楔蛇纹石化过程的显著铁同位素分馏</a></li><li class="la59ca list"><a href="http://www.darrenjbennett.com/html/09d899984.html">北京基因组所开发出分子序列组分动态图谱数据库CompoDynamics</a></li><li class="m8e68b list"><a href="http://www.darrenjbennett.com/html/27e899967.html">黄铁矿纳米矿物材料对抗生素类有机物的催化转化研究取得进展</a></li><li class="n475f9 list"><a href="http://www.darrenjbennett.com/html/33f899960.html">青藏高原高位涡系统对2020年长江流域超强梅雨的影响研究获进展</a></li><li class="oc6c4d list"><a href="http://www.darrenjbennett.com/html/69c899924.html">青岛能源所在高比能锂电池热失控机理研究方面取得进展</a></li><li class="p0fe8b list"><a href="http://www.darrenjbennett.com/html/53b899940.html">白垩纪苔藓植物系统学与拟态研究获进展</a></li><li class="q8dcca list"><a href="http://www.darrenjbennett.com/html/36d899958.html">中国科大等实现金属间化合物燃料电池催化剂的普适性合成</a></li><li class="r343f4 list"><a href="http://www.darrenjbennett.com/html/87c899906.html">研究揭示植物光合作用光适应的新机制</a></li></ul><tt date-time="bc3dc3"></tt><var dir="3979a9"></var><area lang="0235a1"></area><div lang="4b1d37" class="se5f78 clear"></div></div></div></div><map draggable="46f2eb"></map><bdo dropzone="390d05"></bdo><dfn date-time="c15662"></dfn><div draggable="1fc2b4" class="t68889 clear"></div></div><font dir="9f52fc"></font><ins lang="60f5d1"></ins><small draggable="de4c25"></small><div dropzone="adf678" class="ue5c82 index-link linkx inner"><h3 class="vc640d title png"> 友情链接:</h3><sup dropzone="4472d3"></sup><time date-time="f1a658"></time><tt dir="58559f"></tt><div date-time="8028b7" class="w5e307 txt"><var lang="dbdcab"></var><area draggable="135de7"></area><map dropzone="1f20db"></map><ul class='xbcfef list-none'></ul></div></div><footer><bdo date-time="d9c1e9"></bdo><dfn dir="be1eac"></dfn><font lang="5ae028"></font><div dir="1a23d9" class="yea985 inner"><ins draggable="6fdf73"></ins><small dropzone="0f5ef9"></small><sup date-time="c5b17b"></sup><div lang="26b694" class="z955db foot-nav"><a href="http://www.darrenjbennett.com/about/" title='公司简介'>公司简介</a><span>|</span><a href="http://www.darrenjbennett.com/product_list/qichedianping.html" title='产品展示'>产品展示</a><span>|</span><a href="http://www.darrenjbennett.com/newslist/news/" title='新闻动态'>新闻动态</a><span>|</span><a href="http://www.darrenjbennett.com/product_list/products.html"  title='成功案例'>成功案例</a><span>|</span><a href="http://www.darrenjbennett.com/about/"  title='客户服务'>客户服务</a><span>|</span><a href="http://www.darrenjbennett.com/"  title='人才招聘'>人才招聘</a><span>|</span><a href="http://www.darrenjbennett.com/lianxi.html"  title='联系我们'>联系我们</a></div><time dir="a4c124"></time><tt lang="b7750b"></tt><var draggable="120ca3"></var><div draggable="cff2fb" class="a72c9a foot-text"><p>Copyright &copy; 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