Blood:通过2型大麻素受体可调节移植物抗宿主病的严重程度

2020-10-12 星云 MedSci原创

免疫系统包括先天性免疫和适应性免疫(获得性免疫)。移植物抗宿主病(GVHD)是适应性免疫和先天性免疫之间的拉锯战。因此,预防策略是否有效取决于是否能合理的处理适应性免疫和先天性免疫的强度。

免疫系统包括先天性免疫和适应性免疫(获得性免疫)。移植物抗宿主病(GVHD)是适应性免疫和先天性免疫之间的拉锯战。因此,预防策略是否有效取决于是否能合理的处理适应性免疫和先天性免疫的强度。

在该研究中,Cheng Yin Yuan等研究了几乎所有免疫细胞上都表达的2型大麻素受体(CB2R)的作用,证明了供体CD4+或CD8+T细胞上缺乏CB2R,或给予选择性CB2R药理拮抗剂可加剧急性GVHD的致死率。这还伴随着促炎性CD8+T细胞的明显扩张,提示CB2R在T细胞上组成性表达优先调节CD8+T细胞的同种异体反应性。

通过一种新的CB2R-EGFP报告小鼠,研究人员观察到在急性GVHD期间,T细胞上CB2R的表达显著减少,但巨噬细胞上的没有,这表明在炎症条件下不同细胞的受体表达发生了不同的变化。

THC和JWH-133处理对慢性GVHD严重程度的影响

用激动剂四氢大麻酚(THC)和JWH-133靶向CB2R的治疗显示,只有THC可以减轻致死性T细胞介导的急性GVHD。相反,只有JWH-133在硬皮病慢性GVHD模型(巨噬细胞介导病变的发生)中有效。

在体外,THC和JWH-133均可通过CB2R诱导抑制蛋白(arrestin)募集和ERK磷酸化,但THC不影响CB2R介导的腺苷酸环化酶抑制。

综上所述,这些研究表明CB2R在GVHD的调控中起着关键作用,并提示有效的靶向治疗取决于激动剂的信号特性和受体的选择性以及致病性免疫效应细胞的组成。

原始出处:

Cheng Yin Yuan, et al. Signaling Through the Type 2 Cannabinoid Receptor Regulates the Severity of Acute and Chronic Graft versus Host Disease. Blood. October 07, 2020.

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    2020-10-29 xuyong535
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    2020-10-14 kcb069
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  4. [GetPortalCommentsPageByObjectIdResponse(id=1745363, encodeId=1fc41e453635f, content=<a href='/topic/show?id=bdc262694bb' target=_blank style='color:#2F92EE;'>#植物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=62694, encryptionId=bdc262694bb, topicName=植物)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=6a5e35527958, createdName=xuyong535, createdTime=Thu Oct 29 00:10:21 CST 2020, time=2020-10-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1272766, encodeId=357112e276602, content=<a href='/topic/show?id=d04f440581e' target=_blank style='color:#2F92EE;'>#大麻#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=44058, encryptionId=d04f440581e, topicName=大麻)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=87b1109, createdName=kcb069, createdTime=Wed Oct 14 13:10:21 CST 2020, time=2020-10-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1361192, encodeId=292f136119221, content=<a href='/topic/show?id=5c644406910' target=_blank style='color:#2F92EE;'>#大麻素#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=44069, encryptionId=5c644406910, topicName=大麻素)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7387164, createdName=zhangj7108, createdTime=Wed Oct 14 13:10:21 CST 2020, time=2020-10-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1404765, encodeId=997d1404e65ae, content=<a href='/topic/show?id=1a4f4649925' target=_blank style='color:#2F92EE;'>#宿主#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=46499, encryptionId=1a4f4649925, topicName=宿主)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=778d36, createdName=柳叶一刀, createdTime=Wed Oct 14 13:10:21 CST 2020, time=2020-10-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1419740, encodeId=bc871419e4016, content=<a href='/topic/show?id=a798e520582' target=_blank style='color:#2F92EE;'>#移植物抗宿主病#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=75205, encryptionId=a798e520582, topicName=移植物抗宿主病)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=4d6c3527534, createdName=手留余香, createdTime=Wed Oct 14 13:10:21 CST 2020, time=2020-10-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1620763, encodeId=00371620e6310, content=<a href='/topic/show?id=c0c9e520310' target=_blank style='color:#2F92EE;'>#移植物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=75203, encryptionId=c0c9e520310, topicName=移植物)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=153620156575, createdName=10518100zz, createdTime=Wed Oct 14 13:10:21 CST 2020, time=2020-10-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=891667, encodeId=7ab989166ef1, content=<a href='/topic/show?id=311e10396491' target=_blank style='color:#2F92EE;'>#**素#</a>受体,是最近几年的热点,在<a href='/topic/show?id=cda5403080d' target=_blank style='color:#2F92EE;'>#器官移植#</a>,免疫性疾病等中均可能有应用的可能, beContent=null, objectType=article, channel=null, level=null, likeNumber=168, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=103964, encryptionId=311e10396491, topicName=**素), TopicDto(id=40308, encryptionId=cda5403080d, topicName=器官移植)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20220519/c2ab253484ee4527a2d4e9589a4821ac/45de9bf494a54becb2ea4369c9d11e85.jpg, createdBy=7a3710, createdName=lovetcm, createdTime=Tue Oct 13 07:11:38 CST 2020, time=2020-10-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=891642, encodeId=fe808916423a, content=好, beContent=null, objectType=article, channel=null, level=null, likeNumber=88, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=08b05417659, createdName=ms1000000408798788, createdTime=Mon Oct 12 22:56:47 CST 2020, time=2020-10-12, status=1, ipAttribution=)]
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    2020-10-13 lovetcm

    #**素#受体,是最近几年的热点,在#器官移植#,免疫性疾病等中均可能有应用的可能

    0

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    2020-10-12 ms1000000408798788

    0

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