Cell Metab:解除脂肪细胞内的产热制动分子 让脂肪燃烧起来

2016-06-04 佚名 生物谷

本文亮点: 删除脂肪细胞内的Zfp423会触发白色脂肪细胞向米色脂肪细胞的转化 激活转化形成的米色脂肪细胞能够逆转饮食诱导的肥胖 Zfp423能够通过阻断Ebf2的作用抑制脂肪细胞内产热基因的表达 Zfp423与Ebf2形成的蛋白复合体会受到BMP7-Smad信号途径的抑制 近日,来自美国德克萨斯西南医学中心的研究人员在国际学术期刊Cell Metabolism上发表了一项最新研究进

本文亮点:

删除脂肪细胞内的Zfp423会触发白色脂肪细胞向米色脂肪细胞的转化

激活转化形成的米色脂肪细胞能够逆转饮食诱导的肥胖

Zfp423能够通过阻断Ebf2的作用抑制脂肪细胞内产热基因的表达

Zfp423与Ebf2形成的蛋白复合体会受到BMP7-Smad信号途径的抑制

近日,来自美国德克萨斯西南医学中心的研究人员在国际学术期刊Cell Metabolism上发表了一项最新研究进展,他们在脂肪细胞内发现了一个抑制产热基因表达的制动分子,这为肥胖及相关代谢疾病治疗药物的开发提供了一个新靶点。

转录调控因子Ebf2和Prdm16能够建立并维持棕色和米色脂肪细胞特性。但是白色脂肪细胞内抑制产热基因表达,并维持白色脂肪细胞能量储存功能的机制一直没有得到深入发掘。

在这项最新研究中,研究人员报告称转录调节因子Zfp423对于维持白色脂肪特性起到关键作用,该分子能够抑制白色脂肪细胞内产热基因的表达。同时相比于棕色脂肪细胞,Zfp423在白色脂肪细胞内的表达更加丰富,而冷冻刺激会进一步抑制Zfp423的表达。

研究人员通过可诱导的脂肪组织特异性敲除小鼠模型进行研究发现,在成熟脂肪细胞内抑制Zfp423激活,同时结合β-肾上腺素刺激,能够触发已分化的皮下和内脏脂肪细胞变成具有产热功能的米色脂肪细胞,这种重编程事件能够预防和逆转饮食诱导的肥胖以及胰岛素抵抗。

研究人员还从机制上进行了研究,发现脂肪细胞内的Zfp423通过抑制Ebf2的活性并阻止Prdm16激活,导致脂肪细胞内产热基因表达受到抑制,维持了白色脂肪细胞储存脂肪的功能特性。

这些研究结果表明Zfp423是脂肪细胞发挥产热功能的一个制动分子,靶向该分子进而解锁白色脂肪细胞的产热潜能或将成为治疗肥胖的一个新方向。

原始出处

Mengle Shao, Jeff Ishibashi, Christine M. Kusminski, Qiong A. Wang, Chelsea Hepler, Lavanya Vishvanath, Karen A. MacPherson, Stephen B. Spurgin, Kai Sun, William L. Holland, Patrick Seale, Rana K. Gupta.Zfp423 Maintains White Adipocyte Identity through Suppression of the Beige Cell Thermogenic Gene Program.Cell Metab.2016

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    2016-12-19 维他命
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    2016-11-15 guojianrong
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    2016-07-19 一闲
  5. [GetPortalCommentsPageByObjectIdResponse(id=1950485, encodeId=c8c5195048555, content=<a href='/topic/show?id=6f8184365e1' target=_blank style='color:#2F92EE;'>#脂肪燃烧#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=84365, encryptionId=6f8184365e1, topicName=脂肪燃烧)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f503121, createdName=zjubiostat, createdTime=Thu Dec 01 03:06:00 CST 2016, time=2016-12-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1959662, encodeId=a2271959662a5, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=22, 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=Mon Dec 19 19:06:00 CST 2016, time=2016-12-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1887525, encodeId=1bfb188e52508, content=<a href='/topic/show?id=d56611584ec' target=_blank style='color:#2F92EE;'>#Meta#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11584, encryptionId=d56611584ec, topicName=Meta)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d8f4110, createdName=guojianrong, createdTime=Tue Nov 15 01:06:00 CST 2016, time=2016-11-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1895906, encodeId=bd691895906e6, content=<a href='/topic/show?id=4a391158248' target=_blank style='color:#2F92EE;'>#MET#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=20, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11582, encryptionId=4a391158248, topicName=MET)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=18fc139, createdName=一闲, createdTime=Tue Jul 19 15:06:00 CST 2016, time=2016-07-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1869405, encodeId=d03c1869405d2, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=23, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Thu Jul 28 06:06:00 CST 2016, time=2016-07-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1400887, encodeId=ffe6140088e33, content=<a href='/topic/show?id=8fde8438079' target=_blank style='color:#2F92EE;'>#脂肪细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=84380, encryptionId=8fde8438079, topicName=脂肪细胞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=77712282976, createdName=shenxlcyp, createdTime=Mon Jun 06 11:06:00 CST 2016, time=2016-06-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=88630, encodeId=552688630bf, content=不错的文章,多学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=53751677671, createdName=沉心多思, createdTime=Sun Jun 05 21:11:00 CST 2016, time=2016-06-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=88502, encodeId=73df88502b1, content=不错的文章,多学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=108, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=53751677671, createdName=沉心多思, createdTime=Sun Jun 05 14:44:00 CST 2016, time=2016-06-05, status=1, ipAttribution=)]
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  7. [GetPortalCommentsPageByObjectIdResponse(id=1950485, encodeId=c8c5195048555, content=<a href='/topic/show?id=6f8184365e1' target=_blank style='color:#2F92EE;'>#脂肪燃烧#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=84365, encryptionId=6f8184365e1, topicName=脂肪燃烧)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f503121, createdName=zjubiostat, createdTime=Thu Dec 01 03:06:00 CST 2016, time=2016-12-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1959662, encodeId=a2271959662a5, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=22, 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=Mon Dec 19 19:06:00 CST 2016, time=2016-12-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1887525, encodeId=1bfb188e52508, content=<a href='/topic/show?id=d56611584ec' target=_blank style='color:#2F92EE;'>#Meta#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11584, encryptionId=d56611584ec, topicName=Meta)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d8f4110, createdName=guojianrong, createdTime=Tue Nov 15 01:06:00 CST 2016, time=2016-11-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1895906, encodeId=bd691895906e6, content=<a href='/topic/show?id=4a391158248' target=_blank style='color:#2F92EE;'>#MET#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=20, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11582, encryptionId=4a391158248, topicName=MET)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=18fc139, createdName=一闲, createdTime=Tue Jul 19 15:06:00 CST 2016, time=2016-07-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1869405, encodeId=d03c1869405d2, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=23, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Thu Jul 28 06:06:00 CST 2016, time=2016-07-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1400887, encodeId=ffe6140088e33, content=<a href='/topic/show?id=8fde8438079' target=_blank style='color:#2F92EE;'>#脂肪细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=84380, encryptionId=8fde8438079, topicName=脂肪细胞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=77712282976, createdName=shenxlcyp, createdTime=Mon Jun 06 11:06:00 CST 2016, time=2016-06-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=88630, encodeId=552688630bf, content=不错的文章,多学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=53751677671, createdName=沉心多思, createdTime=Sun Jun 05 21:11:00 CST 2016, time=2016-06-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=88502, encodeId=73df88502b1, content=不错的文章,多学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=108, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=53751677671, createdName=沉心多思, createdTime=Sun Jun 05 14:44:00 CST 2016, time=2016-06-05, status=1, ipAttribution=)]
    2016-06-05 沉心多思

    不错的文章,多学习

    0

  8. [GetPortalCommentsPageByObjectIdResponse(id=1950485, encodeId=c8c5195048555, content=<a href='/topic/show?id=6f8184365e1' target=_blank style='color:#2F92EE;'>#脂肪燃烧#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=84365, encryptionId=6f8184365e1, topicName=脂肪燃烧)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f503121, createdName=zjubiostat, createdTime=Thu Dec 01 03:06:00 CST 2016, time=2016-12-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1959662, encodeId=a2271959662a5, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=22, 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=Mon Dec 19 19:06:00 CST 2016, time=2016-12-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1887525, encodeId=1bfb188e52508, content=<a href='/topic/show?id=d56611584ec' target=_blank style='color:#2F92EE;'>#Meta#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11584, encryptionId=d56611584ec, topicName=Meta)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d8f4110, createdName=guojianrong, createdTime=Tue Nov 15 01:06:00 CST 2016, time=2016-11-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1895906, encodeId=bd691895906e6, content=<a href='/topic/show?id=4a391158248' target=_blank style='color:#2F92EE;'>#MET#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=20, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11582, encryptionId=4a391158248, topicName=MET)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=18fc139, createdName=一闲, createdTime=Tue Jul 19 15:06:00 CST 2016, time=2016-07-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1869405, encodeId=d03c1869405d2, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=23, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Thu Jul 28 06:06:00 CST 2016, time=2016-07-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1400887, encodeId=ffe6140088e33, content=<a href='/topic/show?id=8fde8438079' target=_blank style='color:#2F92EE;'>#脂肪细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=84380, encryptionId=8fde8438079, topicName=脂肪细胞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=77712282976, createdName=shenxlcyp, createdTime=Mon Jun 06 11:06:00 CST 2016, time=2016-06-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=88630, encodeId=552688630bf, content=不错的文章,多学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=53751677671, createdName=沉心多思, createdTime=Sun Jun 05 21:11:00 CST 2016, time=2016-06-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=88502, encodeId=73df88502b1, content=不错的文章,多学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=108, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=53751677671, createdName=沉心多思, createdTime=Sun Jun 05 14:44:00 CST 2016, time=2016-06-05, status=1, ipAttribution=)]
    2016-06-05 沉心多思

    不错的文章,多学习

    0

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想要减肥瘦身的朋友们注意了,尽管我们中的很多人都对各种瘦身秘方如数家珍,不过对于肥胖的始作俑者——脂肪细胞,还是知之甚少。最近美国的研究人员就发表了一项有关脂肪细胞的新发现,证明了这些油腻腻的细胞在形成和生长壮大的不同阶段需要消耗完全不同的养分。也就是说,他们发现了脂肪细胞不同时期的进食菜单。 尽管到目前为止,这个发现还仅在实验室内得到证明,不过仍然有助于解释为什么对于某些肥胖症和糖尿病患者而言

Genes Deve:重编程脂肪细胞以增加脂肪燃烧

白色脂肪组织以脂肪的形式储存多余的热量,以便可以在禁食期间供其他器官利用。哺乳动物也有少量的棕色脂肪组织,这主要是用于有效脂肪燃烧,用于产生热量。现在,南丹麦大学研究人员已经发现人体白色脂肪细胞被重新编程成为棕色脂肪细胞的机制。 白色脂肪组织褐变会增加身体能量的消耗,因此,或是肥胖症未来治疗的潜在策略。但面临的挑战是要重新编程白色脂肪组织中存储能量的白色脂肪细胞转化为所谓的“Brite”(白-棕

The FASEB J:寒冷或可将有害脂肪细胞转化成为有益脂肪细胞

白色脂肪和棕色脂肪在机体代谢中的角色已经非常清楚,但近日,一项发表于国际杂志the FASEB Journal上的研究论文中,来自韦恩州立大学(Wayne State University)的研究人员通过研究发现,两种脂肪或许可以互相转化,这仅仅依赖于温度就可以实现,尤其是在低温条件下或许可以将不健康的白色脂肪转化成为健康的棕色脂肪。 文章中,研究者James G. Granneman表示,

Diabetes:成熟脂肪细胞与前体细胞对话 共商分化“大计”

近日,来自瑞士的科学家在国际学术期刊diabetes上发表了一项最新研究进展,他们利用细胞共培养技术和蛋白质组学技术发现了一些可以通过旁分泌或内分泌方式调控脂肪细胞分化的脂肪因子,这对于肥胖及相关代谢综合症治疗具有一定意义。 许多研究已经发现不同部位的脂肪组织会分泌产生许多不同的脂肪因子,但是这些脂肪因子的旁分泌或自分泌对于脂肪细胞的形成具有何种影响目前仍未完全了解。 在这项研究中,研

Science advances:靶向脂肪细胞钠钾泵或可帮助减肥

                                       近日,来自美国马歇尔大学的研究人员发现了阻断细胞钠钾泵增强活性氧簇(ROS)作用效应的新机制,这些氧化物会导致肥胖和代

Nat commun:为什么越胖的人越不容易减肥成功?

近日,一项发表在国际学术期刊nature communication上的研究发现,人越胖,机体就越会产生一种重要蛋白来抑制脂肪燃烧,这一发现或将为肥胖以及其他代谢疾病的治疗带来新启示。 体内大部分脂肪细胞都能够储存过剩能量,并在机体需要的时候释放出来,但是体内还有另外一种叫做棕色脂肪的脂肪组织,主要负责机体产热过程,让机体保持一定温度。但是来自英国和日本的科学家发现体内一种叫做sLR11