B细胞AIM2缺陷可通过调节 Blimp-1-Bcl-6介导的B细胞分化改善系统性红斑狼疮

2021-10-01 MedSci原创 MedSci原创

该研究发现AIM2在狼疮患者的B细胞中高表达,并通过调节Bcl-6–Blimp-1促进B细胞分化,为系统性红斑狼疮治疗提供了新的靶点。

    据报道AIM2是先天免疫细胞炎症小体的组成部分。令人惊讶的是B细胞表达AIM2,且在狼疮患者的B细胞中观察到更高的AIM2表达。迄今为止,B细胞中独立于炎症小体的AIM2功能尚不清楚。

     这篇来自中南大学湘雅附属第二医院Dr. Qianjin Lu团队的研究报告了AIM2在人扁桃体的记忆B细胞和生发中心 (GC) B细胞的表达增加,在狼疮患者的循环记忆B细胞和浆细胞、以及皮肤中均表达增加。采用CD19 Cre小鼠模型在B细胞中条件敲除AIM2降低了淋巴结和脾脏中的CD19+ B细胞频率,并抑制了KLH诱导的IgG1抗体产生。在Pristane诱导的狼疮小鼠模型中,B细胞中的AIM2 缺乏会减轻狼疮症状并降低GC B细胞、滤泡辅助T细胞(Tfh)、浆母细胞和浆细胞的频率。此外,人B细胞AIM2缺失使Blimp-1表达增加并降低了Bcl-6表达。然而沉默Blimp-1Bcl-6AIM2表达没有显著影响,表明AIM2可能是Blimp-1Bcl-6的上游调节器并通过Co-IP实验证明AIM2直接与Blimp-1Bcl-6结合。此外,发现IL-10通过DNA去甲基化上调AIM2表达。

结论:

     该研究发现AIM2在狼疮患者的B细胞中高表达,并通过调节Bcl-6Blimp-1促进B细胞分化,系统性红斑狼疮治疗提供了新的靶点。

 

出处:

Yang M, Long D, Hu L, Zhao Z, Li Q, Guo Y, He Z, Zhao M, Lu L, Li F, Long H, Wu H, Lu Q. AIM2 deficiency in B cells ameliorates systemic lupus erythematosus by regulating Blimp-1-Bcl-6 axis-mediated B-cell differentiation. Signal Transduct Target Ther. 2021 Sep 14;6(1):341. doi: 10.1038/s41392-021-00725-x. PMID: 34521812.

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    2021-11-03 qingrejiedu
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    2021-10-04 1def6e10m76(暂无匿称)

    该研究发现AIM2在狼疮患者的B细胞中高表达,并通过调节Bcl-6–Blimp-1促进B细胞分化,为系统性红斑狼疮治疗提供了新的靶点。

    0

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    2021-10-03 xiaoyeshuang

    #B细胞#

    0

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    2021-10-03 sunrural_42825357

    #狼疮#

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=2017298, encodeId=b3ae201e29802, content=<a href='/topic/show?id=9760e69058c' target=_blank style='color:#2F92EE;'>#系统性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=150, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=76905, encryptionId=9760e69058c, topicName=系统性)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2b9b368, createdName=qingrejiedu, createdTime=Wed Nov 03 18:32:37 CST 2021, time=2021-11-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1057313, encodeId=d490105e313f5, content= 该研究发现AIM2在狼疮患者的B细胞中高表达,并通过调节Bcl-6–Blimp-1促进B细胞分化,为系统性红斑狼疮治疗提供了新的靶点。, beContent=null, objectType=article, channel=null, level=null, likeNumber=137, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTInOuicIVN8Y32NO4Q53Zpd86ObmNp2WIotichCD0qQHaUBeHj7hgwQBCzX7ce4aEw5ZP8icQQfLH9Zw/132, createdBy=4ec21734756, createdName=1def6e10m76(暂无匿称), createdTime=Mon Oct 04 07:04:13 CST 2021, time=2021-10-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1273413, encodeId=cacb12e34136f, content=<a href='/topic/show?id=310d383ef5' target=_blank style='color:#2F92EE;'>#B细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=129, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3837, encryptionId=310d383ef5, topicName=B细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6eba113, createdName=xiaoyeshuang, createdTime=Sun Oct 03 03:32:37 CST 2021, time=2021-10-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1387464, encodeId=5965138e46449, content=<a href='/topic/show?id=8a3a6814425' target=_blank style='color:#2F92EE;'>#狼疮#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=133, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=68144, encryptionId=8a3a6814425, topicName=狼疮)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7a6e2500005, createdName=sunrural_42825357, createdTime=Sun Oct 03 03:32:37 CST 2021, time=2021-10-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1436299, encodeId=a1561436299c0, content=<a href='/topic/show?id=22f8e71238d' target=_blank style='color:#2F92EE;'>#红斑#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=129, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77123, encryptionId=22f8e71238d, topicName=红斑)], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/aLGWoFXAyMbIu3qymFOyheQLjPSX3OUs5GmkyBlcCOwTPIeq3why9NGibxxUqYo6hcx8qZLHZFgNPnBK1yzWeOFpyg2OnWOt0/0, createdBy=fa4716, createdName=zhouqu_8, createdTime=Sun Oct 03 03:32:37 CST 2021, time=2021-10-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1570293, encodeId=576f15e02937a, content=<a href='/topic/show?id=a66ae7809b1' target=_blank style='color:#2F92EE;'>#细胞分化#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=195, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77809, encryptionId=a66ae7809b1, topicName=细胞分化)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=653c15636865, createdName=karmond, createdTime=Sun Oct 03 03:32:37 CST 2021, time=2021-10-03, status=1, ipAttribution=)]
    2021-10-03 zhouqu_8

    #红斑#

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=2017298, encodeId=b3ae201e29802, content=<a href='/topic/show?id=9760e69058c' target=_blank style='color:#2F92EE;'>#系统性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=150, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=76905, encryptionId=9760e69058c, topicName=系统性)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2b9b368, createdName=qingrejiedu, createdTime=Wed Nov 03 18:32:37 CST 2021, time=2021-11-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1057313, encodeId=d490105e313f5, content= 该研究发现AIM2在狼疮患者的B细胞中高表达,并通过调节Bcl-6–Blimp-1促进B细胞分化,为系统性红斑狼疮治疗提供了新的靶点。, beContent=null, objectType=article, channel=null, level=null, likeNumber=137, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTInOuicIVN8Y32NO4Q53Zpd86ObmNp2WIotichCD0qQHaUBeHj7hgwQBCzX7ce4aEw5ZP8icQQfLH9Zw/132, createdBy=4ec21734756, createdName=1def6e10m76(暂无匿称), createdTime=Mon Oct 04 07:04:13 CST 2021, time=2021-10-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1273413, encodeId=cacb12e34136f, content=<a href='/topic/show?id=310d383ef5' target=_blank style='color:#2F92EE;'>#B细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=129, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3837, encryptionId=310d383ef5, topicName=B细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6eba113, createdName=xiaoyeshuang, createdTime=Sun Oct 03 03:32:37 CST 2021, time=2021-10-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1387464, encodeId=5965138e46449, content=<a href='/topic/show?id=8a3a6814425' target=_blank style='color:#2F92EE;'>#狼疮#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=133, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=68144, encryptionId=8a3a6814425, topicName=狼疮)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7a6e2500005, createdName=sunrural_42825357, createdTime=Sun Oct 03 03:32:37 CST 2021, time=2021-10-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1436299, encodeId=a1561436299c0, content=<a href='/topic/show?id=22f8e71238d' target=_blank style='color:#2F92EE;'>#红斑#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=129, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77123, encryptionId=22f8e71238d, topicName=红斑)], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/aLGWoFXAyMbIu3qymFOyheQLjPSX3OUs5GmkyBlcCOwTPIeq3why9NGibxxUqYo6hcx8qZLHZFgNPnBK1yzWeOFpyg2OnWOt0/0, createdBy=fa4716, createdName=zhouqu_8, createdTime=Sun Oct 03 03:32:37 CST 2021, time=2021-10-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1570293, encodeId=576f15e02937a, content=<a href='/topic/show?id=a66ae7809b1' target=_blank style='color:#2F92EE;'>#细胞分化#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=195, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77809, encryptionId=a66ae7809b1, topicName=细胞分化)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=653c15636865, createdName=karmond, createdTime=Sun Oct 03 03:32:37 CST 2021, time=2021-10-03, status=1, ipAttribution=)]
    2021-10-03 karmond