Nat Commun:想要不运动也能锻炼身体?看Sestrin如何为你的代谢添砖加瓦

2020-01-14 佚名 生物探索

在这个转发收藏加“马克一下”健身妙招就等同于做到了学到了的社会里,梦寐以求的八块腹肌和马甲线似乎很难从你的美梦转移到你的肚皮上。曾经美好的肌肉线条也会随着年纪的增长和身材管理的懈怠而逐渐消散,肌肉质量和力量的丧失也会导致身体工作能力低下,降低你的生活质量。

在这个转发收藏加“马克一下”健身妙招就等同于做到了学到了的社会里,梦寐以求的八块腹肌和马甲线似乎很难从你的美梦转移到你的肚皮上。曾经美好的肌肉线条也会随着年纪的增长和身材管理的懈怠而逐渐消散,肌肉质量和力量的丧失也会导致身体工作能力低下,降低你的生活质量。

适度的锻炼对身体机能是百利而无一害,耐力锻炼可以重塑你的肌肉组织,提升你的代谢健康。在脊椎动物中,加强训练可增加线粒体的生物发生率,降低甘油三酸酯的储存以及改善胰岛素敏感性并保护肌肉和神经的功能。但是,对于年纪较大、身体不便(受伤或患病)以及需要久坐的人群来说,似乎很难进行运动来增强身体机能。因此,通过模拟运动来产生锻炼的益处或许可以为不方便运动的人群解决这一问题。

Sestrin是一种小型应激诱导蛋白,哺乳动物中可以表达三种Sestrin(Sesn1-3),它们通过调节多种信号通路来协调机体代谢稳态,也可以作为抗氧化剂来减少细胞中的氧化损伤。Sestrin在运动反应中也发挥着重要作用。

昨日在《Nature Communications》发表的两篇论文中,研究人员发现Sestrin是机体运动收益的关键调节因子。Sestrin可以通过整合合成代谢和分解代谢信号来阻止肌肉的萎缩和老化。

在苍蝇和小鼠模型中,在Sestrin基因切除后,生物体不再获得运动的代谢收益,通过训练也无法再次获得收益。

Sestrin在肌肉不活动时的表达下降,它的遗传性缺失会加剧肌肉的消失。相反,Sestrin的过量表达可以防止肌肉的萎缩。它可以通过mTORC1抑制(上调自噬)和AKT激活来实现这种保护作用。

这些研究结果表明,长期运动对新陈代谢和身体耐力具有益处,而Sestrin是调节机体收益的关键因子。使用小鼠和果蝇(两种系统发育遥远的物种)也证明了在整个动物界中Sestrin在调节运动、增加身体耐力和改善新陈代谢方面的作用是高度保守的。

未来Sestrin是一种很有前途的分子,基于它的治疗方向可以是用于为不适宜或者不能够运动的人群获得类似运动的益处,例如改善活动能力和代谢水平。

Sestrin虽好,可不能一昧等待科技解救懒癌,身体条件合适的情况下,还是需要自主性适当运动,不要再让你的腹肌犹抱肚腩半遮面了。

原始出处:

Segalés J, Perdiguero E, Serrano, A.L. et al. Sestrin prevents atrophy of disused and aging muscles by integrating anabolic and catabolic signals. Nat Commun 11, 189 (2020) doi:10.1038/s41467-019-13832-9.

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    2020-07-19 liuli5079
  2. [GetPortalCommentsPageByObjectIdResponse(id=2087648, encodeId=50ee208e648c7, content=<a href='/topic/show?id=490750196b' target=_blank style='color:#2F92EE;'>#COMMUN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=51, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5019, encryptionId=490750196b, topicName=COMMUN)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7931272, createdName=liuli5079, createdTime=Sun Jul 19 05:49:00 CST 2020, time=2020-07-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1884080, encodeId=be5418840807f, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, 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 Nov 28 11:49:00 CST 2020, time=2020-11-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2051491, encodeId=da1d205149145, content=<a href='/topic/show?id=95f8e042dd' target=_blank style='color:#2F92EE;'>#EST#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=7042, encryptionId=95f8e042dd, topicName=EST)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e9a6357, createdName=xiangyuzhou971, createdTime=Wed Dec 23 13:49:00 CST 2020, time=2020-12-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1569768, encodeId=25291569e68bd, content=<a href='/topic/show?id=49e0161680c' target=_blank style='color:#2F92EE;'>#SES#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16168, encryptionId=49e0161680c, topicName=SES)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=6fc215562628, createdName=dongjia2015, createdTime=Thu Jan 16 05:49:00 CST 2020, time=2020-01-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1050325, encodeId=2526105032535, content=运动锻炼应该是健康第一要素,对各类疾病都应该有益。但是国内这方面研究太少, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=jingjing, createdTime=Tue Jan 14 17:49:00 CST 2020, time=2020-01-14, status=1, ipAttribution=)]
    2020-11-28 liye789132251
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  4. [GetPortalCommentsPageByObjectIdResponse(id=2087648, encodeId=50ee208e648c7, content=<a href='/topic/show?id=490750196b' target=_blank style='color:#2F92EE;'>#COMMUN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=51, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5019, encryptionId=490750196b, topicName=COMMUN)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7931272, createdName=liuli5079, createdTime=Sun Jul 19 05:49:00 CST 2020, time=2020-07-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1884080, encodeId=be5418840807f, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, 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 Nov 28 11:49:00 CST 2020, time=2020-11-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2051491, encodeId=da1d205149145, content=<a href='/topic/show?id=95f8e042dd' target=_blank style='color:#2F92EE;'>#EST#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=7042, encryptionId=95f8e042dd, topicName=EST)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e9a6357, createdName=xiangyuzhou971, createdTime=Wed Dec 23 13:49:00 CST 2020, time=2020-12-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1569768, encodeId=25291569e68bd, content=<a href='/topic/show?id=49e0161680c' target=_blank style='color:#2F92EE;'>#SES#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16168, encryptionId=49e0161680c, topicName=SES)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=6fc215562628, createdName=dongjia2015, createdTime=Thu Jan 16 05:49:00 CST 2020, time=2020-01-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1050325, encodeId=2526105032535, content=运动锻炼应该是健康第一要素,对各类疾病都应该有益。但是国内这方面研究太少, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=jingjing, createdTime=Tue Jan 14 17:49:00 CST 2020, time=2020-01-14, status=1, ipAttribution=)]
    2020-01-16 dongjia2015
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    2020-01-14 jingjing

    运动锻炼应该是健康第一要素,对各类疾病都应该有益。但是国内这方面研究太少

    0