Blood:低剂量西达本胺可恢复ITP患者的免疫耐受

2019-01-07 MedSci MedSci原创

中心点:低剂量西达本胺可通过调节nTreg细胞和CTLA4基因的表达恢复ITP患者的免疫耐受。摘要:现已明确免疫性血小板减少症(ITP)的发病机制涉及巨噬细胞吞噬的抗体覆盖的血小板增多和CD4+CD25+Foxp3+调节T(Treg)细胞的数量减少或功能受损。低剂量的组蛋白去乙酰化酶抑制剂(HDACi)是一种抗炎和免疫调节剂,可通过增加(增强)Foxp3+T调节细胞的数量(功能)来增强移植物抗宿主

中心点:

低剂量西达本胺可通过调节nTreg细胞和CTLA4基因的表达恢复ITP患者的免疫耐受。

摘要:

现已明确免疫性血小板减少症(ITP)的发病机制涉及巨噬细胞吞噬的抗体覆盖的血小板增多和CD4+CD25+Foxp3+调节T(Treg)细胞的数量减少或功能受损。低剂量的组蛋白去乙酰化酶抑制剂(HDACi)是一种抗炎和免疫调节剂,可通过增加(增强)Foxp3+T调节细胞的数量(功能)来增强移植物抗宿主病的免疫抑制作用。但低剂量的HDACi是否可促进ITP的免疫耐受和血小板释放尚不明确。

Hong-yu Zhao等研究人员通过体内外实验发现低剂量HDACi(西达本胺)可减轻ITP小鼠模型的血小板减少。而且,低剂量HDACi还可抑制抗体覆盖的血小板的巨噬细胞吞噬作用,刺激天然Foxp3+ Tregs的产生,促进T细胞像Tregs的外周血转化,恢复Treg的抑制作用。

最后,研究人员证实低剂量HDACi还可通过调节组蛋白H3K27乙酰化调控外周血单核细胞的CTLA4的表达。总而言之,研究人员认为低剂量西达本胺或许可成临床上ITP的新的治疗方法。


原始出处:

Hong-yu Zhao,et al. Low-dose chidamide restores immune tolerance in ITP patients and mice by modulating nTreg cells and CTLA4 expression. Blood 2018 :blood-2018-05-847624; doi: https://doi.org/10.1182/blood-2018-05-847624  

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    2019-01-08 whmdzju
  2. [GetPortalCommentsPageByObjectIdResponse(id=1418427, encodeId=92d4141842e53, content=<a href='/topic/show?id=c8f210115bc' target=_blank style='color:#2F92EE;'>#ITP#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10115, encryptionId=c8f210115bc, topicName=ITP)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=e2523357226, createdName=whmdzju, createdTime=Tue Jan 08 15:25:00 CST 2019, time=2019-01-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1480531, encodeId=b07314805313b, content=<a href='/topic/show?id=647d2615939' target=_blank style='color:#2F92EE;'>#低剂量#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=26159, encryptionId=647d2615939, topicName=低剂量)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=97b17641126, createdName=ms1292405679162969, createdTime=Tue Jan 08 15:25:00 CST 2019, time=2019-01-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=357414, encodeId=ce4135e4142b, content=学习了很有用, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, 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=Mon Jan 07 09:02:14 CST 2019, time=2019-01-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=357402, encodeId=f5e635e40239, content=谢谢了,学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=30331616752, createdName=txqjm, createdTime=Mon Jan 07 06:31:40 CST 2019, time=2019-01-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=357389, encodeId=a7b435e3894d, content=了解一下,谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/12/23/2f51002e1349ccda5be11c1eea1e1e60.jpg, createdBy=a22097948, createdName=天地飞扬, createdTime=Mon Jan 07 01:03:03 CST 2019, time=2019-01-07, status=1, ipAttribution=)]
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    2019-01-07 飛歌

    学习了很有用

    0

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    2019-01-07 txqjm

    谢谢了,学习

    0

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    2019-01-07 天地飞扬

    了解一下,谢谢分享!

    0

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