Sci Immunol:肠道免疫细胞有个“低电量模式”

2018-06-25 小通 生物通

Marc Veldhoen团队在《Science Immunology》发表文章,阐述了这些细胞的不同组成通过降低细胞产能能力,使它们处于受控制的激活模式。这一知识点为消化道炎症诊断和治疗提供了一个新切入点。

Marc Veldhoen团队在《Science Immunology》发表文章,阐述了这些细胞的不同组成通过降低细胞产能能力,使它们处于受控制的激活模式。这一知识点为消化道炎症诊断和治疗提供了一个新切入点。


正常血液中的白细胞(左图),线粒体信号(绿色)强劲;“低电量模式”的肠白细胞(右图)

你的肠道每天都需要在一个协调的平衡中工作——确保基本营养素吸收的同时阻止潜在有害微生物进入。检测该系统的是一组特殊的免疫细胞,尽管它们有许多活化细胞特征,但是由于某些未知的原因它们似乎被身体“雪藏”了。

如今,葡萄牙Jo?o Lobo Antunes分子医学研究所(Instituto de Medicina Molecular Jo?o Lobo Antunes)的Marc Veldhoen团队在《Science Immunology》发表文章,阐述了这些细胞的不同组成通过降低细胞产能能力,使它们处于受控制的激活模式。这一知识点为消化道炎症诊断和治疗提供了一个新切入点。

在我们身体外层——皮肤和肠道——含有一组特殊的白细胞群,我们称之为上皮内淋巴细胞(intraepithelial lymphocytes)。这些细胞不是完全激活也不是静息的,有关它们的活性是被如何控制的,在很大程度上是未知的。

利用成像和生化实验,Marc Veldhoen领导的研究小组证明,线粒体差异可能是影响这些细胞活性的部分原因。

线粒体是细胞的能量生产单元。“我们猜测这些肠道白细胞可以用不同的方式使用能量,”Marc Veldhoen解释说。与其他白细胞相比,这群细胞的线粒体检测结果截然不同。这项观察造就了一个新假说——这些细胞中的线粒体本身有点特别。

利用高倍放大显微镜,观察图片显示虽然细胞中线粒体数量非常丰富,但结构似乎与普通光镜染色不同。“当我们分析结构细节时,我们发现将线粒体与细胞其他部分分隔开的层的脂质发生了变化,”文章一作?pela Konjar说。“这些变化使线粒体工作的方式发生改变,让它们处于一种‘低电量模式’。”

接下来,研究人员进一步分析线粒体功能。他们证实,当脂质层结构被定向改变后,细胞激活潜能也相应发生变化。换句话说,细胞线粒体脂质可操纵细胞的代谢状态,甚至改变细胞活性。

“一旦线粒体脂质排列与其他白细胞不同,细胞就无法在被需要时适当激活,”研究人员解释说。“这一新知识点为我们提供了抑制或激活细胞活性的新途径。另外,线粒体检测也可作为肠道白细胞激活状态的诊断标志物。”

原始出处:Spela Konjar, Ulrika C. Frising, Cristina Ferreira, et al. Mitochondria maintain controlled activation state of epithelial-resident T lymphocytes. Science Immunology  22 Jun 2018

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  2. [GetPortalCommentsPageByObjectIdResponse(id=2032224, encodeId=df532032224b8, content=<a href='/topic/show?id=fc2381650de' target=_blank style='color:#2F92EE;'>#肠道免疫#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81650, encryptionId=fc2381650de, topicName=肠道免疫)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6ab940, createdName=hukaixun, createdTime=Mon Apr 15 06:46:00 CST 2019, time=2019-04-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=327047, encodeId=b23c32e04744, content=学习学习.继续关注, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=93f31631454, createdName=1dd8c52fm63(暂无匿称), createdTime=Tue Jun 26 04:52:30 CST 2018, time=2018-06-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=327036, encodeId=090d32e03679, content=厉害了我的哥, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib3IzoRn621JdKCFUI4XvNELcibocrAVU6aUzEVDSaf3rYH08PUYUiagGqxAEhj8g9WqqNvD1CupIpCrmnR2OrqHZh/0, createdBy=7f181365728, createdName=飛歌, createdTime=Tue Jun 26 02:28:05 CST 2018, time=2018-06-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=327024, encodeId=68f532e02477, content=学习了.谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=62, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7c592194322, createdName=1209e435m98(暂无昵称), createdTime=Tue Jun 26 01:29:55 CST 2018, time=2018-06-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=327018, encodeId=149232e018c1, content=学习了.谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=1bb241978, createdName=phoebeyan520, createdTime=Tue Jun 26 00:39:51 CST 2018, time=2018-06-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=327008, encodeId=938732e00899, content=谢谢分享学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=51, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/Q3auHgzwzM4o2XVpJ6449yqDsjibydI5HnJ8MibGxNn4HZiaZib0bdfibbwoz3KQrIyN9AGxq36ZlZRNicYlPfOOWMtwgsajY6mGNFiaPclFdowjD0/0, createdBy=97bd1338592, createdName=清风拂面, createdTime=Mon Jun 25 23:19:51 CST 2018, time=2018-06-25, status=1, ipAttribution=)]
    2018-06-26 1dd8c52fm63(暂无匿称)

    学习学习.继续关注

    0

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    2018-06-26 飛歌

    厉害了我的哥

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=2032224, encodeId=df532032224b8, content=<a href='/topic/show?id=fc2381650de' target=_blank style='color:#2F92EE;'>#肠道免疫#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81650, encryptionId=fc2381650de, topicName=肠道免疫)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6ab940, createdName=hukaixun, createdTime=Mon Apr 15 06:46:00 CST 2019, time=2019-04-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=327047, encodeId=b23c32e04744, content=学习学习.继续关注, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=93f31631454, createdName=1dd8c52fm63(暂无匿称), createdTime=Tue Jun 26 04:52:30 CST 2018, time=2018-06-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=327036, encodeId=090d32e03679, content=厉害了我的哥, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib3IzoRn621JdKCFUI4XvNELcibocrAVU6aUzEVDSaf3rYH08PUYUiagGqxAEhj8g9WqqNvD1CupIpCrmnR2OrqHZh/0, createdBy=7f181365728, createdName=飛歌, createdTime=Tue Jun 26 02:28:05 CST 2018, time=2018-06-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=327024, encodeId=68f532e02477, content=学习了.谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=62, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7c592194322, createdName=1209e435m98(暂无昵称), createdTime=Tue Jun 26 01:29:55 CST 2018, time=2018-06-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=327018, encodeId=149232e018c1, content=学习了.谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=1bb241978, createdName=phoebeyan520, createdTime=Tue Jun 26 00:39:51 CST 2018, time=2018-06-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=327008, encodeId=938732e00899, content=谢谢分享学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=51, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/Q3auHgzwzM4o2XVpJ6449yqDsjibydI5HnJ8MibGxNn4HZiaZib0bdfibbwoz3KQrIyN9AGxq36ZlZRNicYlPfOOWMtwgsajY6mGNFiaPclFdowjD0/0, createdBy=97bd1338592, createdName=清风拂面, createdTime=Mon Jun 25 23:19:51 CST 2018, time=2018-06-25, status=1, ipAttribution=)]
    2018-06-26 1209e435m98(暂无昵称)

    学习了.谢谢分享

    0

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    2018-06-26 phoebeyan520

    学习了.谢谢

    0

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    2018-06-25 清风拂面

    谢谢分享学习

    0

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