Nature:高分辨率3D成像技术或可阐明肌肉细胞线粒体的能量网络

2015-08-04 生物谷 生物谷

2015年8月3日 讯 /生物谷BIOON/ --近日,一项刊登在国际杂志Nature上的研究报告推翻了长期以来科学界的一种观点,即能量如何分布在肌肉中来进行运动的,科学家首次发现肌肉细胞可以通过在线粒体网络中进行电荷的快速传导来分布能量,该研究或为有效阐明线粒体能量工厂为肌肉收缩功能的分子机制提供了新的思路,同时也为理解机体和能量利用相关的疾病发的机体提供了一定的线索。 研究者Robert


近日,一项刊登在国际杂志Nature上的研究报告推翻了长期以来科学界的一种观点,即能量如何分布在肌肉中来进行运动的,科学家首次发现肌肉细胞可以通过在线粒体网络中进行电荷的快速传导来分布能量,该研究或为有效阐明线粒体能量工厂为肌肉收缩功能的分子机制提供了新的思路,同时也为理解机体和能量利用相关的疾病发的机体提供了一定的线索。

研究者Robert S. Balaban说道,肌肉细胞中能量的快速分布机制可以改变科学家们对肌肉功能及作用的认知,同时也为研究人类健康和机体疾病带来了希望。文章中研究者对小鼠骨骼肌细胞的功能、线粒体结构以及生化组成进行了研究,利用3D电镜术及超分辨率光学成像技术研究者发现,大部分的线粒体都可以通过类似市政电网上的输电线路那样形成高连接性的网络。

这种线粒体的“电线”都具有电力传导性,利用特殊的探针研究者发现,大多数的线粒体都是通过联网的模式进行直接的电力交流或传输,这同时也就说明,线粒体具有电耦合性,而且可以快速分布于线粒体膜电压上,这就是ATP产生的原始能量。本文研究揭示了线粒体如何在肌肉中分布排列,线粒体的特殊排列方式可以使得潜在能量的流动以线粒体膜电压的形式通过细胞进行ATP的产生,随后帮助进行肌肉的收缩。

研究者Subramaniam指出,最初我们开发这些生物成像技术目的就是研究HIV-1的感染机制以及黑色素瘤细胞的结构改变,而让我们非常高兴的是本文中我们利用这些技术也阐明了肌肉中线粒体的排列机制以及供能策略。

揭秘肌肉细胞分布能量的基本策略或可帮助阐明疾病的诊断及治疗方向,本文研究就为开发新型的疾病医学诊断技术提供了一定帮助;未来研究中,科学家们将利用肌肉活检或复杂的非侵入性成像技术来解释肌肉细胞中线粒体网络的缺失如何影响多种疾病的发生。

原始出处:

Brian Glancy, Lisa M. Hartnell, Daniela Malide.et.al.Mitochondrial reticulum for cellular energy distribution in muscle.Nature.2015.8.3

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    2015-10-10 liye789132251
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    2016-04-07 lsndxfj
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    2015-10-16 lixh1719

    不知道是否可以用于类似内质网应激等其他领域的研究

    0

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  8. [GetPortalCommentsPageByObjectIdResponse(id=1880759, encodeId=683a1880e5906, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Sat Oct 10 05:51:00 CST 2015, time=2015-10-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1936151, encodeId=cdfe193615130, content=<a href='/topic/show?id=bf8a10222582' target=_blank style='color:#2F92EE;'>#高分辨率#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=102225, encryptionId=bf8a10222582, topicName=高分辨率)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTIW7uIr5ebYvJohUq0dkkVV05uF9jPpeyCrlcx904mUdMI9UKqpO3bt4GkgYBNdv485qT2NsVE27w/132, createdBy=023c2500122, createdName=ms8543593053280928, createdTime=Wed Mar 30 05:51:00 CST 2016, time=2016-03-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1997587, encodeId=090d199e58710, content=<a href='/topic/show?id=e06810222253' target=_blank style='color:#2F92EE;'>#高分辨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=102222, encryptionId=e06810222253, topicName=高分辨)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=acc3210, createdName=lsndxfj, createdTime=Thu Apr 07 04:51:00 CST 2016, time=2016-04-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2034236, encodeId=0e952034236c3, 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=40, 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=Tue Feb 09 07:51:00 CST 2016, time=2016-02-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=38984, encodeId=b3e73898423, content=不知道是否可以用于类似内质网应激等其他领域的研究, beContent=null, objectType=article, channel=null, level=null, likeNumber=122, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTJXCR8W80NNgQuicJU3aIm3JtiaNAFLYSMlBuVfGkSlw5Z5VpmZK4PyiaDURLAorhvwhWVnaM1gQdJXA/132, createdBy=a01444383, createdName=lixh1719, createdTime=Fri Oct 16 10:24:00 CST 2015, time=2015-10-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1335877, encodeId=687213358e759, content=<a href='/topic/show?id=792612047e' target=_blank style='color:#2F92EE;'>#3D#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=1204, encryptionId=792612047e, topicName=3D)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/pSGl6CJeZ2PzWxdhCtrvv4U9Q281RV8e0AKmlB5ib93DibbiaRyOzmkCdz5F04cbfX5RGOpG4dOXvuQW1fumibVeBg/132, createdBy=fc342500110, createdName=ms9833124466084992, createdTime=Wed Aug 05 23:51:00 CST 2015, time=2015-08-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1570732, encodeId=7acb15e073271, content=<a href='/topic/show?id=03d55395183' target=_blank style='color:#2F92EE;'>#成像技术#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=53951, encryptionId=03d55395183, topicName=成像技术)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d6b515702368, createdName=photoman, createdTime=Wed Aug 05 23:51:00 CST 2015, time=2015-08-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=34336, encodeId=e6d2343369c, content=比较有价值, beContent=null, objectType=article, channel=null, level=null, likeNumber=129, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c4a5105539, createdName=lovetcm, createdTime=Tue Aug 04 11:20:00 CST 2015, time=2015-08-04, status=1, ipAttribution=)]
    2015-08-04 lovetcm

    比较有价值

    0

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