STM:修复蛋白被激活帮助肌肉萎缩症患者生成肌肉细胞

2014-08-25 佚名 生物谷

当肌肉细胞膜遭到破坏,修复蛋白质dysferlin就会被激活并且重新帮助生成肌肉细胞膜。如果这种修复蛋白质由于基因突变被改变,那么人体自身的“质量控制”系统(即蛋白酶体)就认为该蛋白质是缺陷的继而消除它。如果没有dysferlin蛋白,那么受伤的肌肉细胞膜就不能被修复,从而导致骨骼肌细胞逐渐损失最终致使肌肉萎缩。看来,人体自身的“质量控制体系"会中和突变蛋白质dysferlin,即使这种突变

当肌肉细胞膜遭到破坏,修复蛋白质dysferlin就会被激活并且重新帮助生成肌肉细胞膜。如果这种修复蛋白质由于基因突变被改变,那么人体自身的“质量控制”系统(即蛋白酶体)就认为该蛋白质是缺陷的继而消除它。如果没有dysferlin蛋白,那么受伤的肌肉细胞膜就不能被修复,从而导致骨骼肌细胞逐渐损失最终致使肌肉萎缩。看来,人体自身的“质量控制体系"会中和突变蛋白质dysferlin,即使这种突变体并不会损害它的修复功能。

修复蛋白质重新被激活。Michael Sinnreich教授领导的研究小组曾证实,蛋白酶体抑制剂可以激活培养的肌肉细胞中发生突变的dysferlin蛋白质,这种肌肉细胞取自肌肉萎缩症患者体内。大量的蛋白酶体抑制剂使变异的修复蛋白能恢复其功能并且修复受损的肌肉细胞膜。该小组已经将调查结果转化为临床应用。在理论水平的研究中,该结论中蛋白酶体抑制剂修复肌肉萎缩症患者骨骼肌中失踪的dysferlin蛋白质。体内含有dysferlin突变体的三个病人获得了体内所需要剂量的蛋白酶体抑制剂。几天后,病人的肌肉组织中产生了失踪dysferlin蛋白质,该蛋白质可能在临床上有重要作用。

该项研究的研究主管Michael Sinnreich说:“新的发现为未来的长期临床试验奠定了基础,这些发现可能对治疗肌肉萎缩症以及其它以前无法治愈的遗传疾病非常重要。”

原始出处:

Azakir BA1, Erne B1, Di Fulvio S1, Stirnimann G2, Sinnreich M3.Proteasome inhibitors increase missense mutated dysferlin in patients with muscular dystrophy.Sci Transl Med. 2014 Aug 20;6(250):250ra112. doi: 10.1126/scitranslmed.3009612. Epub 2014 Aug 20.

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=1695747, encodeId=2cd71695e47ea, content=<a href='/topic/show?id=03b98809697' target=_blank style='color:#2F92EE;'>#萎缩#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=88096, encryptionId=03b98809697, topicName=萎缩)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=53fc29868494, createdName=chendoc252, createdTime=Wed Mar 18 11:16:00 CST 2015, time=2015-03-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2034235, encodeId=16ef2034235fd, content=<a href='/topic/show?id=d0dd8101569' target=_blank style='color:#2F92EE;'>#肌肉细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81015, encryptionId=d0dd8101569, topicName=肌肉细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=cd0d217, createdName=huiwelcome, createdTime=Thu Oct 16 10:16:00 CST 2014, time=2014-10-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1677936, encodeId=157716e7936d8, content=<a href='/topic/show?id=29a8168130f' target=_blank style='color:#2F92EE;'>#STM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16813, encryptionId=29a8168130f, topicName=STM)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d76127619556, createdName=gdsun, createdTime=Sat May 23 20:16:00 CST 2015, time=2015-05-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1584172, encodeId=5cc415841e2ef, content=<a href='/topic/show?id=f3308101eee' target=_blank style='color:#2F92EE;'>#肌肉萎缩#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81017, encryptionId=f3308101eee, topicName=肌肉萎缩)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=177b17012429, createdName=12498ebem24暂无昵称, createdTime=Wed Aug 27 00:16:00 CST 2014, time=2014-08-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1614079, encodeId=993816140e98b, content=<a href='/topic/show?id=b05281019f8' target=_blank style='color:#2F92EE;'>#肌肉萎缩症#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81019, encryptionId=b05281019f8, topicName=肌肉萎缩症)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c28719479710, createdName=12498768m19(暂无昵称), createdTime=Wed Aug 27 00:16:00 CST 2014, time=2014-08-27, status=1, ipAttribution=)]
    2015-03-18 chendoc252
  2. [GetPortalCommentsPageByObjectIdResponse(id=1695747, encodeId=2cd71695e47ea, content=<a href='/topic/show?id=03b98809697' target=_blank style='color:#2F92EE;'>#萎缩#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=88096, encryptionId=03b98809697, topicName=萎缩)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=53fc29868494, createdName=chendoc252, createdTime=Wed Mar 18 11:16:00 CST 2015, time=2015-03-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2034235, encodeId=16ef2034235fd, content=<a href='/topic/show?id=d0dd8101569' target=_blank style='color:#2F92EE;'>#肌肉细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81015, encryptionId=d0dd8101569, topicName=肌肉细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=cd0d217, createdName=huiwelcome, createdTime=Thu Oct 16 10:16:00 CST 2014, time=2014-10-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1677936, encodeId=157716e7936d8, content=<a href='/topic/show?id=29a8168130f' target=_blank style='color:#2F92EE;'>#STM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16813, encryptionId=29a8168130f, topicName=STM)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d76127619556, createdName=gdsun, createdTime=Sat May 23 20:16:00 CST 2015, time=2015-05-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1584172, encodeId=5cc415841e2ef, content=<a href='/topic/show?id=f3308101eee' target=_blank style='color:#2F92EE;'>#肌肉萎缩#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81017, encryptionId=f3308101eee, topicName=肌肉萎缩)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=177b17012429, createdName=12498ebem24暂无昵称, createdTime=Wed Aug 27 00:16:00 CST 2014, time=2014-08-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1614079, encodeId=993816140e98b, content=<a href='/topic/show?id=b05281019f8' target=_blank style='color:#2F92EE;'>#肌肉萎缩症#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81019, encryptionId=b05281019f8, topicName=肌肉萎缩症)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c28719479710, createdName=12498768m19(暂无昵称), createdTime=Wed Aug 27 00:16:00 CST 2014, time=2014-08-27, status=1, ipAttribution=)]
  3. [GetPortalCommentsPageByObjectIdResponse(id=1695747, encodeId=2cd71695e47ea, content=<a href='/topic/show?id=03b98809697' target=_blank style='color:#2F92EE;'>#萎缩#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=88096, encryptionId=03b98809697, topicName=萎缩)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=53fc29868494, createdName=chendoc252, createdTime=Wed Mar 18 11:16:00 CST 2015, time=2015-03-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2034235, encodeId=16ef2034235fd, content=<a href='/topic/show?id=d0dd8101569' target=_blank style='color:#2F92EE;'>#肌肉细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81015, encryptionId=d0dd8101569, topicName=肌肉细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=cd0d217, createdName=huiwelcome, createdTime=Thu Oct 16 10:16:00 CST 2014, time=2014-10-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1677936, encodeId=157716e7936d8, content=<a href='/topic/show?id=29a8168130f' target=_blank style='color:#2F92EE;'>#STM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16813, encryptionId=29a8168130f, topicName=STM)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d76127619556, createdName=gdsun, createdTime=Sat May 23 20:16:00 CST 2015, time=2015-05-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1584172, encodeId=5cc415841e2ef, content=<a href='/topic/show?id=f3308101eee' target=_blank style='color:#2F92EE;'>#肌肉萎缩#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81017, encryptionId=f3308101eee, topicName=肌肉萎缩)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=177b17012429, createdName=12498ebem24暂无昵称, createdTime=Wed Aug 27 00:16:00 CST 2014, time=2014-08-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1614079, encodeId=993816140e98b, content=<a href='/topic/show?id=b05281019f8' target=_blank style='color:#2F92EE;'>#肌肉萎缩症#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81019, encryptionId=b05281019f8, topicName=肌肉萎缩症)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c28719479710, createdName=12498768m19(暂无昵称), createdTime=Wed Aug 27 00:16:00 CST 2014, time=2014-08-27, status=1, ipAttribution=)]
    2015-05-23 gdsun
  4. [GetPortalCommentsPageByObjectIdResponse(id=1695747, encodeId=2cd71695e47ea, content=<a href='/topic/show?id=03b98809697' target=_blank style='color:#2F92EE;'>#萎缩#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=88096, encryptionId=03b98809697, topicName=萎缩)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=53fc29868494, createdName=chendoc252, createdTime=Wed Mar 18 11:16:00 CST 2015, time=2015-03-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2034235, encodeId=16ef2034235fd, content=<a href='/topic/show?id=d0dd8101569' target=_blank style='color:#2F92EE;'>#肌肉细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81015, encryptionId=d0dd8101569, topicName=肌肉细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=cd0d217, createdName=huiwelcome, createdTime=Thu Oct 16 10:16:00 CST 2014, time=2014-10-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1677936, encodeId=157716e7936d8, content=<a href='/topic/show?id=29a8168130f' target=_blank style='color:#2F92EE;'>#STM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16813, encryptionId=29a8168130f, topicName=STM)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d76127619556, createdName=gdsun, createdTime=Sat May 23 20:16:00 CST 2015, time=2015-05-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1584172, encodeId=5cc415841e2ef, content=<a href='/topic/show?id=f3308101eee' target=_blank style='color:#2F92EE;'>#肌肉萎缩#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81017, encryptionId=f3308101eee, topicName=肌肉萎缩)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=177b17012429, createdName=12498ebem24暂无昵称, createdTime=Wed Aug 27 00:16:00 CST 2014, time=2014-08-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1614079, encodeId=993816140e98b, content=<a href='/topic/show?id=b05281019f8' target=_blank style='color:#2F92EE;'>#肌肉萎缩症#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81019, encryptionId=b05281019f8, topicName=肌肉萎缩症)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c28719479710, createdName=12498768m19(暂无昵称), createdTime=Wed Aug 27 00:16:00 CST 2014, time=2014-08-27, status=1, ipAttribution=)]
  5. [GetPortalCommentsPageByObjectIdResponse(id=1695747, encodeId=2cd71695e47ea, content=<a href='/topic/show?id=03b98809697' target=_blank style='color:#2F92EE;'>#萎缩#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=88096, encryptionId=03b98809697, topicName=萎缩)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=53fc29868494, createdName=chendoc252, createdTime=Wed Mar 18 11:16:00 CST 2015, time=2015-03-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2034235, encodeId=16ef2034235fd, content=<a href='/topic/show?id=d0dd8101569' target=_blank style='color:#2F92EE;'>#肌肉细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81015, encryptionId=d0dd8101569, topicName=肌肉细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=cd0d217, createdName=huiwelcome, createdTime=Thu Oct 16 10:16:00 CST 2014, time=2014-10-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1677936, encodeId=157716e7936d8, content=<a href='/topic/show?id=29a8168130f' target=_blank style='color:#2F92EE;'>#STM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16813, encryptionId=29a8168130f, topicName=STM)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d76127619556, createdName=gdsun, createdTime=Sat May 23 20:16:00 CST 2015, time=2015-05-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1584172, encodeId=5cc415841e2ef, content=<a href='/topic/show?id=f3308101eee' target=_blank style='color:#2F92EE;'>#肌肉萎缩#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81017, encryptionId=f3308101eee, topicName=肌肉萎缩)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=177b17012429, createdName=12498ebem24暂无昵称, createdTime=Wed Aug 27 00:16:00 CST 2014, time=2014-08-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1614079, encodeId=993816140e98b, content=<a href='/topic/show?id=b05281019f8' target=_blank style='color:#2F92EE;'>#肌肉萎缩症#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81019, encryptionId=b05281019f8, topicName=肌肉萎缩症)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c28719479710, createdName=12498768m19(暂无昵称), createdTime=Wed Aug 27 00:16:00 CST 2014, time=2014-08-27, status=1, ipAttribution=)]

相关资讯

JCI:新型小鼠模型为肌肉萎缩症治疗提供思路

肌肉萎缩症(muscular dystrophy)是一种比较复杂的遗传性疾病,遗传突变可以改变几种不同的蛋白质的功能,而这些蛋白质可以形成一种复合物,这种复合物却是连接肌肉细胞和细胞外基质(ECM)之间的“结构大桥”。在病人中,这种遗传突变所引发的效应非常广泛,为了开发出新型的疗法,研究者需要特定的动物模型来精确在其体内表现出人类疾病的状况和疾病发病过程。 近日,刊登在国际杂志the Journ

PNAS:修改肌营养相关蛋白治疗肌肉萎缩症

  在美国大约有250,000人患有肌营养不良症,三年前,密苏里州大学科学家们发现了一个分子化合物,对治疗疾病是至关重要的,但他们不知道如何使化合物结合肌肉细胞。在一项新的发表在PNAS杂志上的研究中,MU学校医学院科学家Yi Lai和Dongsheng Duan已经解决了部分难题,最终可能导致出现潜在的治疗疾病策略。   杜氏进行性肌营养不良症(DMD)主要影响男性,是最常