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CLIN CANCER RES ：抗原呈递后BTLA对CD8+T细胞具有多种作用

2017-10-29 MedSci MedSci原创

CD8+T细胞BTLA细胞免疫治疗
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利用自体肿瘤浸润淋巴细胞（TIL）进行过继T细胞治疗在转移性黑色素瘤患者中总临床反应率在40%-50%。输入的CD8+肿瘤浸润淋巴细胞BTLA表达与更好的临床结局有关。CLIN CANCER RES近期发表了一篇文章，研究CD8+BTLA+TIL亚群的功能特点以及BTLA中的Grb2在T细胞共刺激中发挥的作用。

利用自体肿瘤浸润淋巴细胞（TIL）进行过继T细胞治疗在转移性黑色素瘤患者中总临床反应率在40%-50%。输入的CD8+肿瘤浸润淋巴细胞BTLA表达与更好的临床结局有关。CLIN CANCER RES近期发表了一篇文章，研究CD8+BTLA+TIL亚群的功能特点以及BTLA中的Grb2在T细胞共刺激中发挥的作用。

作者在人CD8+TIL和鼠CD8+T细胞中研究BTLA发挥的作用及BTLA下游信号。使用的功能研究方法包括单细胞分析，RPPA，抗原特异性疫苗模型联合过继TCR转基因T细胞以及使用免疫缺陷NSG肿瘤负荷鼠构建PDX模型并使用自体TIL细胞进行干预。研究结果表明，CD8+BTLA-TIL细胞在体内不能控制肿瘤生长，抗原特异性CD8+BTLA-T细胞对疫苗的反应受损。但是，CD8+BTLA+TIL细胞在杀伤肿瘤靶标后生存期延长并且持续杀伤能力得到提升。研究还发现Grb2通过增强IL-2分泌和TCR激活后Src活化调节共刺激功能。

文章最后认为，BTLA作为分子具有对已激活的CD8+T细胞同时提供共刺激和共抑制信号的能力，可以导致细胞生存期延长，改善肿瘤控制情况以及产生功能性记忆应答

原始出处：
Krit Ritthipichai,Cara L.Haymaker,et al.Multifaceted Role of BTLA in the Control of CD8+ T-cell Fate after Antigen Encounter.CLIN CANCER RES.October 2017 doi:10.1158/1078-0432.CCR-16-1217

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    2018-03-30 gds2009

    #D8+T#

    0

  2. [GetPortalCommentsPageByObjectIdResponse(id=1784046, encodeId=bf201e840461b, content=<a href='/topic/show?id=4b5c564252' target=_blank style='color:#2F92EE;'>#D8+T#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5642, encryptionId=4b5c564252, topicName=D8+T)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f612331, createdName=gds2009, createdTime=Fri Mar 30 04:38:00 CST 2018, time=2018-03-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1605372, encodeId=835016053e2c8, content=<a href='/topic/show?id=94c9436340' target=_blank style='color:#2F92EE;'>#CD8#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4363, encryptionId=94c9436340, topicName=CD8)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=4bac19388006, createdName=ms691033630344116, createdTime=Tue Oct 31 02:38:00 CST 2017, time=2017-10-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1623261, encodeId=42c11623261ae, content=<a href='/topic/show?id=62a655263e9' target=_blank style='color:#2F92EE;'>#抗原#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=55263, encryptionId=62a655263e9, topicName=抗原)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f59b20519025, createdName=xiaoyeshuang, createdTime=Tue Oct 31 02:38:00 CST 2017, time=2017-10-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=256982, encodeId=f47b2569827e, content=非常好的文章.学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo7LIiaRZTzJ3SEfiauCzTMPW7YvPPYLNJBXG9oh6Al1icq2VQQkIHWxqXehcicTS62YKJVBhxeth3wggw/0, createdBy=7ce01621306, createdName=天涯183, createdTime=Sun Oct 29 15:42:37 CST 2017, time=2017-10-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=256967, encodeId=d89425696e30, content=学习了受益匪浅, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/ajNVdqHZLLDicHg2ldsSNmib46PmdzpO7CQEmPjuULp1v45zPWwMYhrnXgvl3OtmUCZSQfgITWn96X9moL94nUGA/0, createdBy=28072041016, createdName=131****1460, createdTime=Sun Oct 29 13:41:32 CST 2017, time=2017-10-29, status=1, ipAttribution=)]
    2017-10-31 ms691033630344116

    #CD8#

    0

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    2017-10-31 xiaoyeshuang

    #抗原#

    0

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    2017-10-29 天涯183

    非常好的文章.学习了

    0

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    2017-10-29 131****1460

    学习了受益匪浅

    0

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