Nature:受伤过的皮肤具有更好的修复能力

2017-10-19 海北 MedSci原创

人体多个组织存在着成体干细胞,帮助机体进行组织的维持和修复。因此,这些细胞必须感知环境侵袭,并作出相应的反应。皮肤屏障暴露于一系列共生和致病微生物,以及有害物质中,十分的脆弱。

人体多个组织存在着成体干细胞,帮助机体进行组织的维持和修复。因此,这些细胞必须感知环境侵袭,并作出相应的反应。皮肤屏障暴露于一系列共生和致病微生物,以及有害物质中,十分的脆弱。但是同时,皮肤屏障是身体防御环境的第一道防线,其由上皮干细胞EpSCs)维持。尽管EpSCs易受炎症压力的影响,但是至今为止,其对炎症的主要反应以及长期的后果也还不清楚。

来自洛克菲勒大学的研究人员在自然杂志发文报导了小鼠EpSCs对于急性炎症存在长期记忆,使其在随后的组织损伤中加速屏障恢复进程。这种功能的适应不需要皮肤驻留的巨噬细胞或T细胞,相反,是EpSCs在第一次刺激激活的关键应激反应基因上维持了染色体的可及性。当第二次挑战来临时,这些区域控制的基因能够被迅速转录。

Aim2是推动这种记忆的因子,其编码一种炎症的活化剂。没有AIM2或其下游效应物的情况下,半胱氨酸蛋白酶-1和白细胞介素-1β会消除EpSCs回忆炎症的能力。

虽然EpSCs能够受益于炎症调节,提高对随后压力的反应性,但是这种增强的灵敏度可能增加其对自身免疫和过度增殖性疾病(包括癌症)的易感性。


原始出处:

Shruti Naik et al. Inflammatory memory sensitizes skin epithelial stem cells to tissue damageNature, 2017; DOI: 10.1038/nature24271


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    2017-11-13 liye789132251
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    2017-10-20 2227437833_79976374

    很好很好很好

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    2017-10-19 明天会更好!

    不错的文章值得一读.

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    2017-10-19 1ddf0692m34(暂无匿称)

    学习了.涨知识

    0

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    2017-10-19 Y—xianghai

    学习了新知识

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1882546, encodeId=457218825469b, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, 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 Nov 13 11:17:00 CST 2017, time=2017-11-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=254513, encodeId=be682545139a, content=很好很好很好, 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/2017/10/07/8c1e5a0085f3b74f3a4ab58a38a3d487.jpg, createdBy=b33e2159612, createdName=2227437833_79976374, createdTime=Fri Oct 20 08:05:45 CST 2017, time=2017-10-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=254262, encodeId=c4d82542623f, content=不错的文章值得一读., beContent=null, objectType=article, channel=null, level=null, likeNumber=72, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160914/IMG57D82E721DB581755.jpg, createdBy=4fc81933929, createdName=明天会更好!, createdTime=Thu Oct 19 10:06:25 CST 2017, time=2017-10-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=254242, encodeId=2b05254242de, content=学习了.涨知识, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, 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=Thu Oct 19 08:26:15 CST 2017, time=2017-10-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=254227, encodeId=48ea25422eaa, content=学习了新知识, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20201006/4db877c2887649beb09cb5effd0b38c7/916f66edd48a4e77b20ebc3e14b6e45c.jpg, createdBy=141e1980133, createdName=Y—xianghai, createdTime=Thu Oct 19 07:50:46 CST 2017, time=2017-10-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=254211, encodeId=1dd1254211a1, content=谢谢.学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=ad4c106013, createdName=Drhzm308, createdTime=Thu Oct 19 07:29:55 CST 2017, time=2017-10-19, status=1, ipAttribution=)]
    2017-10-19 Drhzm308

    谢谢.学习了

    0

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