Blood:PRMT5与BCL6协同发挥致癌作用,对生发中心形成和淋巴瘤细胞存活至关重要

2018-08-07 MedSci MedSci原创

中心点:PRMT5甲基化对BCL6的全转录后的抑制活性以及生发中心形成均至关重要。同时抑制BCL6和PRMT5可协同杀伤表达BCL6的淋巴瘤细胞。摘要:生发中心(GC)反应在产生体液免疫中发挥重要作用,被认为是大多数B细胞淋巴瘤的起源。GC的进出严格受转录因子(如BCL6)的调控。近期,Lu Xiaoqing等人发现PRMT5,对称的二甲基精氨酸甲基转移酶,也在GC形成和亲和力成熟过程中发挥重要作

中心点:

PRMT5甲基化对BCL6的全转录后的抑制活性以及生发中心形成均至关重要。

同时抑制BCL6和PRMT5可协同杀伤表达BCL6的淋巴瘤细胞。

摘要:

生发中心(GC)反应在产生体液免疫中发挥重要作用,被认为是大多数B细胞淋巴瘤的起源。GC的进出严格受转录因子(如BCL6)的调控。

近期,Lu Xiaoqing等人发现PRMT5,对称的二甲基精氨酸甲基转移酶,也在GC形成和亲和力成熟过程中发挥重要作用。PRMT5至少部分是通过与BCL6的305位精氨酸甲基化(BCL6完全转录后抑制作用所必需的修饰)直接相互作用促进GC形成、亲和力成熟。

抑制B细胞淋巴瘤细胞系的PRMT5可显著上调BCL6靶基因,同时抑制BCL6和PRMT5则可协同杀伤表达BCL6的淋巴瘤细胞。

总而言之,本研究表明PRMT5是GC反映的新的调控因子,同时强调了同时靶向淋巴瘤的PRMT5和BCL6的基本理论。

原始出处:

Xiaoqing Lu,et al. PRMT5 interacts with the BCL6 oncoprotein and is required for germinal center formation and lymphoma cell survival. Blood  2018  :blood-2018-02-831438;  doi: https://doi.org/10.1182/blood-2018-02-831438

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    2018-08-09 jambiya
  4. [GetPortalCommentsPageByObjectIdResponse(id=1974501, encodeId=3b6d19e450166, content=<a href='/topic/show?id=5b0832e1bd' target=_blank style='color:#2F92EE;'>#BCL6#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3271, encryptionId=5b0832e1bd, topicName=BCL6)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTI5V6pBDhhleaA9ZQaNgImyx09qqFom6WIvSGdUoWfKiaWCiaeUfnXMRECAMPA81Wkd4EOicrPibOTudQ/132, createdBy=b9382500209, createdName=ms6127405442416114, createdTime=Tue Sep 11 07:09:00 CST 2018, time=2018-09-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2083751, encodeId=ccd12083e51de, content=<a href='/topic/show?id=73a76891666' target=_blank style='color:#2F92EE;'>#生发中心#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=68916, encryptionId=73a76891666, topicName=生发中心)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=yeye5224612, createdTime=Sat Jan 19 07:09:00 CST 2019, time=2019-01-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1370953, encodeId=6e3313e0953ad, content=<a href='/topic/show?id=9c39864991e' target=_blank style='color:#2F92EE;'>#致癌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=23, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=86499, encryptionId=9c39864991e, topicName=致癌)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2c25323, createdName=jambiya, createdTime=Thu Aug 09 06:09:00 CST 2018, time=2018-08-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=337130, encodeId=7ef333e13063, content=学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NfBfgWn9nXBgH1sNSiaOAKhsKpN40jDHQKqcRzovau5VibLvREN8uxnu9sKoScBicHSiaDMmbveibFdrBiaD4k4IOPwlG/0, createdBy=b5d11730951, createdName=Jackie Li, createdTime=Tue Aug 07 15:39:28 CST 2018, time=2018-08-07, status=1, ipAttribution=)]
    2018-08-07 Jackie Li

    学习

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