Baidu
map

MOL CELL:新型胆固醇共价修饰蛋白是hedgehog信号通路必须组分

2017-03-25 MedSci MedSci原创

研究人员组构建了SMO-D99N(人源SMO中的D95N)的Knock-In小鼠。发现纯合的SmoD99N/D99N小鼠会造成胚胎致死(下图)。病理学研究表明,纯合SmoD99N/D99N小鼠出现了严重的胚胎和心脏发育障碍。并且小鼠的神经管中Hh下游基因的表达也显著降低。进一步的定量PCR进一步确认了Hh pathway下游基因表达的抑制。

最近,来自武汉大学生命科学学院的研究人员报道了一项关于胆固醇共价修饰蛋白Smoothened (SMO)的研究, 相关研究刊登于国际杂志MOL CELL上。

Hedgehog信号通路是调节动物胚胎发育的经典信号通路之一,Hedgehog(HH) 基因是1980年由 Nusslein-Vollhard Wieschaus 在研究果蝇的突变体时发现 ,该基因突变会导致果蝇幼虫体表出现许多刺突,形似刺猬,故命名为 Hedgehog

研究人员组构建了SMO-D99N(人源SMO中的D95N)的Knock-In小鼠。发现纯合的SmoD99N/D99N小鼠会造成胚胎致死(下图)。病理学研究表明,纯合SmoD99N/D99N小鼠出现了严重的胚胎和心脏发育障碍。并且小鼠的神经管中Hh下游基因的表达也显著降低。进一步的定量PCR进一步确认了Hh pathway下游基因表达的抑制。

研究表明SMO通过Asp95D95)残基上的胆固醇共价修饰,SMO的胆固醇修饰被Ptch1抑制,并被Hh增强。同时,SMO胆固醇化对于Hh信号传导和胚胎发育至关重要。 胆固醇修饰对SMO的活化有重要意义,提示SMO的胆固醇修饰可以作为一个治疗Hh相关癌症的新靶点。

原始出处:

Xu Xiao, Jing-Jie Tang, Chao Peng, Wen-Wei Qiu. et al.Cholesterol Modification of Smoothened Is Required for Hedgehog Signaling. Science  24 Mar 2017:Vol. 355, Issue 6331, pp. 1247-1248

本文系梅斯医学(MedSci)原创编译整理,转载需授权!

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 (5)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=1752431, encodeId=23f81e5243121, content=<a href='/topic/show?id=0ded865662' target=_blank style='color:#2F92EE;'>#Hedgehog#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=8656, encryptionId=0ded865662, topicName=Hedgehog)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=544436541072, createdName=yibei, createdTime=Fri Dec 22 05:14:00 CST 2017, time=2017-12-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1869828, encodeId=b4e2186982840, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Tue Feb 13 21:14:00 CST 2018, time=2018-02-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1960087, encodeId=cd18196008ea7, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, 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=Sun Dec 10 03:14:00 CST 2017, time=2017-12-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1539595, encodeId=68bd153959566, content=<a href='/topic/show?id=c61a2e315da' target=_blank style='color:#2F92EE;'>#信号通路#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=27315, encryptionId=c61a2e315da, topicName=信号通路)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b12d13147749, createdName=wgx310, createdTime=Mon Mar 27 04:14:00 CST 2017, time=2017-03-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1569283, encodeId=84e215692837c, content=<a href='/topic/show?id=1c562e42646' target=_blank style='color:#2F92EE;'>#修饰#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=27426, encryptionId=1c562e42646, topicName=修饰)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=29c615505859, createdName=zhangyxzsh, createdTime=Mon Mar 27 04:14:00 CST 2017, time=2017-03-27, status=1, ipAttribution=)]
    2017-12-22 yibei
  2. [GetPortalCommentsPageByObjectIdResponse(id=1752431, encodeId=23f81e5243121, content=<a href='/topic/show?id=0ded865662' target=_blank style='color:#2F92EE;'>#Hedgehog#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=8656, encryptionId=0ded865662, topicName=Hedgehog)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=544436541072, createdName=yibei, createdTime=Fri Dec 22 05:14:00 CST 2017, time=2017-12-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1869828, encodeId=b4e2186982840, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Tue Feb 13 21:14:00 CST 2018, time=2018-02-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1960087, encodeId=cd18196008ea7, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, 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=Sun Dec 10 03:14:00 CST 2017, time=2017-12-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1539595, encodeId=68bd153959566, content=<a href='/topic/show?id=c61a2e315da' target=_blank style='color:#2F92EE;'>#信号通路#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=27315, encryptionId=c61a2e315da, topicName=信号通路)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b12d13147749, createdName=wgx310, createdTime=Mon Mar 27 04:14:00 CST 2017, time=2017-03-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1569283, encodeId=84e215692837c, content=<a href='/topic/show?id=1c562e42646' target=_blank style='color:#2F92EE;'>#修饰#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=27426, encryptionId=1c562e42646, topicName=修饰)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=29c615505859, createdName=zhangyxzsh, createdTime=Mon Mar 27 04:14:00 CST 2017, time=2017-03-27, status=1, ipAttribution=)]
  3. [GetPortalCommentsPageByObjectIdResponse(id=1752431, encodeId=23f81e5243121, content=<a href='/topic/show?id=0ded865662' target=_blank style='color:#2F92EE;'>#Hedgehog#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=8656, encryptionId=0ded865662, topicName=Hedgehog)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=544436541072, createdName=yibei, createdTime=Fri Dec 22 05:14:00 CST 2017, time=2017-12-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1869828, encodeId=b4e2186982840, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Tue Feb 13 21:14:00 CST 2018, time=2018-02-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1960087, encodeId=cd18196008ea7, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, 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=Sun Dec 10 03:14:00 CST 2017, time=2017-12-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1539595, encodeId=68bd153959566, content=<a href='/topic/show?id=c61a2e315da' target=_blank style='color:#2F92EE;'>#信号通路#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=27315, encryptionId=c61a2e315da, topicName=信号通路)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b12d13147749, createdName=wgx310, createdTime=Mon Mar 27 04:14:00 CST 2017, time=2017-03-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1569283, encodeId=84e215692837c, content=<a href='/topic/show?id=1c562e42646' target=_blank style='color:#2F92EE;'>#修饰#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=27426, encryptionId=1c562e42646, topicName=修饰)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=29c615505859, createdName=zhangyxzsh, createdTime=Mon Mar 27 04:14:00 CST 2017, time=2017-03-27, status=1, ipAttribution=)]
    2017-12-10 维他命
  4. [GetPortalCommentsPageByObjectIdResponse(id=1752431, encodeId=23f81e5243121, content=<a href='/topic/show?id=0ded865662' target=_blank style='color:#2F92EE;'>#Hedgehog#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=8656, encryptionId=0ded865662, topicName=Hedgehog)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=544436541072, createdName=yibei, createdTime=Fri Dec 22 05:14:00 CST 2017, time=2017-12-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1869828, encodeId=b4e2186982840, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Tue Feb 13 21:14:00 CST 2018, time=2018-02-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1960087, encodeId=cd18196008ea7, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, 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=Sun Dec 10 03:14:00 CST 2017, time=2017-12-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1539595, encodeId=68bd153959566, content=<a href='/topic/show?id=c61a2e315da' target=_blank style='color:#2F92EE;'>#信号通路#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=27315, encryptionId=c61a2e315da, topicName=信号通路)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b12d13147749, createdName=wgx310, createdTime=Mon Mar 27 04:14:00 CST 2017, time=2017-03-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1569283, encodeId=84e215692837c, content=<a href='/topic/show?id=1c562e42646' target=_blank style='color:#2F92EE;'>#修饰#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=27426, encryptionId=1c562e42646, topicName=修饰)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=29c615505859, createdName=zhangyxzsh, createdTime=Mon Mar 27 04:14:00 CST 2017, time=2017-03-27, status=1, ipAttribution=)]
  5. [GetPortalCommentsPageByObjectIdResponse(id=1752431, encodeId=23f81e5243121, content=<a href='/topic/show?id=0ded865662' target=_blank style='color:#2F92EE;'>#Hedgehog#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=8656, encryptionId=0ded865662, topicName=Hedgehog)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=544436541072, createdName=yibei, createdTime=Fri Dec 22 05:14:00 CST 2017, time=2017-12-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1869828, encodeId=b4e2186982840, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Tue Feb 13 21:14:00 CST 2018, time=2018-02-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1960087, encodeId=cd18196008ea7, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, 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=Sun Dec 10 03:14:00 CST 2017, time=2017-12-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1539595, encodeId=68bd153959566, content=<a href='/topic/show?id=c61a2e315da' target=_blank style='color:#2F92EE;'>#信号通路#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=27315, encryptionId=c61a2e315da, topicName=信号通路)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b12d13147749, createdName=wgx310, createdTime=Mon Mar 27 04:14:00 CST 2017, time=2017-03-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1569283, encodeId=84e215692837c, content=<a href='/topic/show?id=1c562e42646' target=_blank style='color:#2F92EE;'>#修饰#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=27426, encryptionId=1c562e42646, topicName=修饰)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=29c615505859, createdName=zhangyxzsh, createdTime=Mon Mar 27 04:14:00 CST 2017, time=2017-03-27, status=1, ipAttribution=)]
    2017-03-27 zhangyxzsh
Baidu
map
Baidu
map
Baidu
map