Cell Report:内质网应激机制是维持肝脏和肾脏代谢脂肪,避免脂肪肝的重要机制

2017-05-31 MedSci MedSci原创

这项研究揭示了内质网应激可以调节肝脏和肾脏在脂肪代谢中的作用,以及内质网应激缺陷导致脂肪肝的可能机制,未来可能根据此开发调节内质网应激的药物来解决肥胖和脂肪肝等慢性疾病。

内质网应激(Endoplasmic reticulum stress)是由于在内质网内新合成的蛋白和需要适当地折叠分泌的蛋白之间产生不平衡所引起的。因此,没有来得及适当折叠的蛋白质会通过内质网应激反应所调控的机制来减轻内质网的压力,减少蛋白质负载并确保所分泌的蛋白被正确折叠,转运。内质网应激机制如果出现错误会引起各种的代谢疾病,起码在肝脏和肾脏中,内质网应激的失衡导致脂质积累,尤其在肝脏中内质网应激失衡常常伴随代谢基因的转录抑制。

在最新上线的Cell Report杂志中,Diane DeZwaan-McCabe及其同事报导,在缺乏内质网应激传感器ATF6a蛋白的小鼠中,在肝脏和肾脏中会发生增强的脂肪侵入和积累。研究人员发现在内质网应激机制受损的情况下,如果脂肪酸氧化分解的反应受到了抑制,则会有更多的脂肪在肝脏和肾脏的积累导致肥胖。而且如果实验小鼠不能够减少细胞内内质网应激的水平的话,小鼠会发生自发性的厌食症。其次,研究人员发现在内质网应激缺陷的小鼠中,脂肪的分解会加速游离脂肪酸的产生,这些脂肪酸会被肝脏和肾脏吸收,从而引起更强的炎症反应,而这些在肝脏中炎症和脂肪酸积累也是促进肝脏脂肪变性的预兆。

这项研究揭示了内质网应激可以调节肝脏和肾脏在脂肪代谢中的作用,以及内质网应激缺陷导致脂肪肝的可能机制,未来可能根据此开发调节内质网应激的药物来解决肥胖和脂肪肝等慢性疾病。

原始出处:
DeZwaan-McCabe et al., ER Stress Inhibits Liver Fatty Acid Oxidation while Unmitigated Stress Leads to Anorexia-Induced Lipolysis and Both Liver and Kidney Steatosis. Cell Reports 19, 1794–1806 May 30, 2017. http://dx.doi.org/10.1016/j.celrep.2017.05.020

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=1869982, encodeId=21c618699825f, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Sep 04 06:27:00 CST 2017, time=2017-09-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1960241, encodeId=5fd719602416a, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, 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=Thu Jun 08 17:27:00 CST 2017, time=2017-06-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1445153, encodeId=e0a514451535d, content=<a href='/topic/show?id=61e74928629' target=_blank style='color:#2F92EE;'>#应激#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=49286, encryptionId=61e74928629, topicName=应激)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=医者仁心, createdTime=Fri Jun 02 00:27:00 CST 2017, time=2017-06-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=204775, encodeId=3ba2204e75dc, content=脂肪肝怎么彻底治疗, beContent=null, objectType=article, channel=null, level=null, likeNumber=68, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160718/IMG578C993D395567540.jpg, createdBy=59b81918946, createdName=flysky120, createdTime=Wed May 31 10:35:02 CST 2017, time=2017-05-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=204756, encodeId=b033204e56d5, content=谢谢分享,学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6Nx0VGA4QMDzOP8oAgnV4h51EjSfehJ9QxyiaSmw8PB56BhY8KXFSxHCibXrzcy4abrzSibXQPxJ9kzrLcJyhhB8a/0, createdBy=1d3b1672603, createdName=明月清辉, createdTime=Wed May 31 09:32:50 CST 2017, time=2017-05-31, status=1, ipAttribution=)]
  2. [GetPortalCommentsPageByObjectIdResponse(id=1869982, encodeId=21c618699825f, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Sep 04 06:27:00 CST 2017, time=2017-09-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1960241, encodeId=5fd719602416a, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, 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=Thu Jun 08 17:27:00 CST 2017, time=2017-06-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1445153, encodeId=e0a514451535d, content=<a href='/topic/show?id=61e74928629' target=_blank style='color:#2F92EE;'>#应激#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=49286, encryptionId=61e74928629, topicName=应激)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=医者仁心, createdTime=Fri Jun 02 00:27:00 CST 2017, time=2017-06-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=204775, encodeId=3ba2204e75dc, content=脂肪肝怎么彻底治疗, beContent=null, objectType=article, channel=null, level=null, likeNumber=68, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160718/IMG578C993D395567540.jpg, createdBy=59b81918946, createdName=flysky120, createdTime=Wed May 31 10:35:02 CST 2017, time=2017-05-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=204756, encodeId=b033204e56d5, content=谢谢分享,学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6Nx0VGA4QMDzOP8oAgnV4h51EjSfehJ9QxyiaSmw8PB56BhY8KXFSxHCibXrzcy4abrzSibXQPxJ9kzrLcJyhhB8a/0, createdBy=1d3b1672603, createdName=明月清辉, createdTime=Wed May 31 09:32:50 CST 2017, time=2017-05-31, status=1, ipAttribution=)]
    2017-06-08 维他命
  3. [GetPortalCommentsPageByObjectIdResponse(id=1869982, encodeId=21c618699825f, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Sep 04 06:27:00 CST 2017, time=2017-09-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1960241, encodeId=5fd719602416a, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, 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=Thu Jun 08 17:27:00 CST 2017, time=2017-06-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1445153, encodeId=e0a514451535d, content=<a href='/topic/show?id=61e74928629' target=_blank style='color:#2F92EE;'>#应激#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=49286, encryptionId=61e74928629, topicName=应激)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=医者仁心, createdTime=Fri Jun 02 00:27:00 CST 2017, time=2017-06-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=204775, encodeId=3ba2204e75dc, content=脂肪肝怎么彻底治疗, beContent=null, objectType=article, channel=null, level=null, likeNumber=68, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160718/IMG578C993D395567540.jpg, createdBy=59b81918946, createdName=flysky120, createdTime=Wed May 31 10:35:02 CST 2017, time=2017-05-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=204756, encodeId=b033204e56d5, content=谢谢分享,学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6Nx0VGA4QMDzOP8oAgnV4h51EjSfehJ9QxyiaSmw8PB56BhY8KXFSxHCibXrzcy4abrzSibXQPxJ9kzrLcJyhhB8a/0, createdBy=1d3b1672603, createdName=明月清辉, createdTime=Wed May 31 09:32:50 CST 2017, time=2017-05-31, status=1, ipAttribution=)]
  4. [GetPortalCommentsPageByObjectIdResponse(id=1869982, encodeId=21c618699825f, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Sep 04 06:27:00 CST 2017, time=2017-09-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1960241, encodeId=5fd719602416a, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, 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=Thu Jun 08 17:27:00 CST 2017, time=2017-06-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1445153, encodeId=e0a514451535d, content=<a href='/topic/show?id=61e74928629' target=_blank style='color:#2F92EE;'>#应激#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=49286, encryptionId=61e74928629, topicName=应激)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=医者仁心, createdTime=Fri Jun 02 00:27:00 CST 2017, time=2017-06-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=204775, encodeId=3ba2204e75dc, content=脂肪肝怎么彻底治疗, beContent=null, objectType=article, channel=null, level=null, likeNumber=68, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160718/IMG578C993D395567540.jpg, createdBy=59b81918946, createdName=flysky120, createdTime=Wed May 31 10:35:02 CST 2017, time=2017-05-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=204756, encodeId=b033204e56d5, content=谢谢分享,学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6Nx0VGA4QMDzOP8oAgnV4h51EjSfehJ9QxyiaSmw8PB56BhY8KXFSxHCibXrzcy4abrzSibXQPxJ9kzrLcJyhhB8a/0, createdBy=1d3b1672603, createdName=明月清辉, createdTime=Wed May 31 09:32:50 CST 2017, time=2017-05-31, status=1, ipAttribution=)]
    2017-05-31 flysky120

    脂肪肝怎么彻底治疗

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1869982, encodeId=21c618699825f, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Sep 04 06:27:00 CST 2017, time=2017-09-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1960241, encodeId=5fd719602416a, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, 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=Thu Jun 08 17:27:00 CST 2017, time=2017-06-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1445153, encodeId=e0a514451535d, content=<a href='/topic/show?id=61e74928629' target=_blank style='color:#2F92EE;'>#应激#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=49286, encryptionId=61e74928629, topicName=应激)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=医者仁心, createdTime=Fri Jun 02 00:27:00 CST 2017, time=2017-06-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=204775, encodeId=3ba2204e75dc, content=脂肪肝怎么彻底治疗, beContent=null, objectType=article, channel=null, level=null, likeNumber=68, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160718/IMG578C993D395567540.jpg, createdBy=59b81918946, createdName=flysky120, createdTime=Wed May 31 10:35:02 CST 2017, time=2017-05-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=204756, encodeId=b033204e56d5, content=谢谢分享,学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6Nx0VGA4QMDzOP8oAgnV4h51EjSfehJ9QxyiaSmw8PB56BhY8KXFSxHCibXrzcy4abrzSibXQPxJ9kzrLcJyhhB8a/0, createdBy=1d3b1672603, createdName=明月清辉, createdTime=Wed May 31 09:32:50 CST 2017, time=2017-05-31, status=1, ipAttribution=)]
    2017-05-31 明月清辉

    谢谢分享,学习了

    0

相关资讯

JBC:FGF21可能缓解内质网应激诱导的脂肪肝中的作用

The Journal of Biological Chemistry发表了中国科学院上海生命科学研究院营养科学研究所刘勇研究组与上海交通大学附属第六人民医院贾伟平研究组的最新合作研究:Fibroblast Growth Factor 21 Is Regulated by the IRE1α-XBP1 Branch of the Unfolded Protein Response an