Nat Commun:社会我肠道菌!可通过改变细胞基因预防感染和癌症!

2018-01-22 佚名 生物探索

这项发表在Nature Communications杂志上的研究称,来自细菌的化学信息能够改变“整个人类基因组中的关键化学标记”。通过这种“交流”方式,肠道细菌可以帮助对抗感染及预防癌症。


图片来源:Nature Communications(DOI:10.1038/s41467-017-02651-5)

这项发表在Nature Communications杂志上的研究称,来自细菌的化学信息能够改变“整个人类基因组中的关键化学标记”。通过这种“交流”方式,肠道细菌可以帮助对抗感染预防癌症。

具体来说,在这项研究中,由Patrick Varga-Weisz博士带领的团队,展示了肠道细菌通过消化水果和蔬菜产生的化学物质,是如何影响肠壁细胞(the cells of the gut lining)基因的。

研究发现,这些被称为短链脂肪酸(short chain fatty acids)的化学物质能够从细菌中移动到我们自己的细胞中,然后触发一系列改变基因活性以及最终影响细胞行为的过程。


肠道内的有益细菌能够产生影响人类基因组的化学信号,而基因组中的这些改变可能有助于对抗感染预防癌症。(图片来源:Babraham Institute)

研究证实,短链脂肪酸通过关闭一种叫做HDAC2的蛋白质增加了化学标记(chemical markers)crotonylations的数量。科学家们认为,最近才被发现的这类标记,它们的变化能够通过开启或关闭基因来改变基因活性。

此外,科学家们还调查了肠道中丢失了大部分细菌的小鼠,结果显示,这些小鼠细胞中的HDAC2蛋白高于正常水平。而一些其他研究已证明,HDAC2的增加与患结直肠癌的风险增加有关。

Rachel Fellows说:“先前,科学家们在很多细胞中发现了crotonylations,而这种化学标记在肠道中尤为常见。我们的研究揭示了为何会出现这种现象。”

总结来说,这些研究可能意味着,调节肠道细胞基因组的crotonylations对预防癌症非常重要,同时,也强调了有益肠道细菌和健康饮食在这一过程中的重要作用。

原始出处:

Rachel Fellows, Jérémy Denizot, Patrick Varga-Weisz, et.al. Microbiota derived short chain fatty acids promote histone crotonylation in the colon through histone deacetylases. Nature Communications 9

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    2018-04-01 liuli5079
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    2018-12-17 liye789132251
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  5. [GetPortalCommentsPageByObjectIdResponse(id=2087261, encodeId=3380208e26164, content=<a href='/topic/show?id=490750196b' target=_blank style='color:#2F92EE;'>#COMMUN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, 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 Apr 01 04:03:00 CST 2018, time=2018-04-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1882793, encodeId=28121882e935b, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Mon Dec 17 01:03:00 CST 2018, time=2018-12-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1392300, encodeId=73961392300b3, content=<a href='/topic/show?id=223081e33b6' target=_blank style='color:#2F92EE;'>#肠道菌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81733, encryptionId=223081e33b6, topicName=肠道菌)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=aa292500107, createdName=1249897bm37(暂无昵称), createdTime=Wed Jan 24 02:03:00 CST 2018, time=2018-01-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1616800, encodeId=7abe16168006f, content=<a href='/topic/show?id=e660e3936c0' target=_blank style='color:#2F92EE;'>#社会#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73936, encryptionId=e660e3936c0, topicName=社会)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=e6de19781024, createdName=ms705947299214030, createdTime=Wed Jan 24 02:03:00 CST 2018, time=2018-01-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=281204, encodeId=c141281204f7, content=阅, beContent=null, objectType=article, channel=null, level=null, likeNumber=72, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/vi_32/fhZdOu27e88Voqh19n8eF8cLplo8L4nicKtH0WnE3KFELXns5XDu8rsiceK2HHDZc2SEStia5VV3Pia2QLMVqlWbHw/0, createdBy=6e012139475, createdName=神功盖世, createdTime=Tue Jan 23 08:45:27 CST 2018, time=2018-01-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=280963, encodeId=b546280963b7, content=学习了.涨知识, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20220115/46bcf39c32de4aa6b45c5f9d66c8ee77/6cb4a20c55bb4b7691122f47747bfca2.jpg, createdBy=9dad1662329, createdName=1ddf0692m34(暂无匿称), createdTime=Mon Jan 22 11:57:05 CST 2018, time=2018-01-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=280944, encodeId=ec41280944d5, content=阅, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2017/09/07/a9772c74ffd6edc03a7f9af07b4747f6.jpg, createdBy=b3722138742, createdName=sunfeifeiyang, createdTime=Mon Jan 22 11:09:44 CST 2018, time=2018-01-22, status=1, ipAttribution=)]
    2018-01-23 神功盖世

    0

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    2018-01-22 1ddf0692m34(暂无匿称)

    学习了.涨知识

    0

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    2018-01-22 sunfeifeiyang

    0

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