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CELL STEM CELL:日培育出肿瘤抗原特异性T细胞

2013-01-07 Cell Stem Cell 腾讯科学

据英国每日邮报报道,目前,日本科学家首次培育出一种能够杀死癌症的细胞,他们表示能够将这种细胞直接注射到癌症患者体内实现治疗效果。这项研究报告发表在《干细胞》杂志上。  日本科学家首次创造了具有杀死癌症的细胞,图为显微镜下培育的“杀伤细胞”  日本研究员正在培育杀伤T淋巴细胞,未来可直接将这种细胞注射到癌症患者体内进行治疗  通常这种细胞仅存在于少数人体内,但有望大量注射到癌症患者体内实现癌症免疫性

据英国每日邮报报道,目前,日本科学家首次培育出一种能够杀死癌症的细胞,他们表示能够将这种细胞直接注射到癌症患者体内实现治疗效果。这项研究报告发表在《干细胞》杂志上。


  日本科学家首次创造了具有杀死癌症的细胞,图为显微镜下培育的“杀伤细胞”


  日本研究员正在培育杀伤T淋巴细胞,未来可直接将这种细胞注射到癌症患者体内进行治疗

  通常这种细胞仅存在于少数人体内,但有望大量注射到癌症患者体内实现癌症免疫性。日本过敏和免疫研究中心的研究人员首次成功地创造了这种癌症免疫细胞——杀手T淋巴细胞。

  为了创造这种免疫细胞,研究小组首次重组T淋巴细胞,使其能够专门杀死一种类型的癌症细胞,形成另一种叫做诱导多功能干细胞(iPS)的细胞类型。这些iPS细胞之后产生完全活跃性、癌症免疫T淋巴细胞。

  由iPS细胞生成的T淋巴细胞未来将潜在成为一种癌症治疗方法,之前研究显示实验室内传统方法培育的杀伤T淋巴细胞无法杀死癌症细胞,这是因为这些细胞的寿命较短,从而无法适用于癌症治疗。

  为了克服这些困难,由Hiroshi Kawamoto带领的一支日本研究小组重组了成年人体内的杀手T淋巴细胞成为iPS细胞,并研究如何区分这两种细胞。Hiroshi Kawamoto指出,下一步我们将测试是否T淋巴细胞能够有选择性地杀死肿瘤细胞,而不是人体内其它细胞。如果是这样的话,这些细胞将能够直接注射到患者体内进行治疗,这将在不久的将来成为现实。目前,  英国伦敦国王学院干细胞科学高级讲师杜斯科-艾利西博士说:“这项研究采用一种新颖、非常有趣的方法实现细胞基础治疗,或许是我们从未听说过的。”


Regeneration of Human Tumor Antigen-Specific T Cells from iPSCs Derived from Mature CD8+ T Cells

Highlights

iPSCs generated from T cells specific for the MART-1 melanoma epitope

Differentiation of iPSCs into T cells with a MART-1 specific T cell receptor

MART-1-based stimulation of T cells demonstrates retained antigen specificity

Summary

Antigen-specific T cells represent a potential therapeutic avenue for a variety of conditions, but current approaches for generating such cells for therapeutic purposes are limited. In this study, we established iPSCs from mature cytotoxic T cells specific for the melanoma epitope MART-1. When cocultured with OP9/DLL1 cells, these iPSCs efficiently generated TCRβ+CD4+CD8+ double positive (DP) cells expressing a T cell receptor (TCR) specific for the MART-1 epitope. Stimulation of these DP cells with anti-CD3 antibody generated a large number of CD8+ T cells, and more than 90% of the resulting cells were specific for the original MART-1 epitope. Stimulation of the CD8+ T cells with MART-1 antigen-presenting cells led to the secretion of IFNγ, demonstrating their specific reactivity. The present study therefore illustrates an approach for cloning and expanding functional antigen-specific CD8+ T cells that might be applicable in cell-based therapy of cancer.

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    2013-12-04 维他命
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  8. [GetPortalCommentsPageByObjectIdResponse(id=1899036, encodeId=3c84189903661, content=<a href='/topic/show?id=6f746e94170' target=_blank style='color:#2F92EE;'>#特异性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=67941, encryptionId=6f746e94170, topicName=特异性)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=dc7a157, createdName=jinweidong, createdTime=Tue May 28 00:26:00 CST 2013, time=2013-05-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1868614, encodeId=8b2f1868614db, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=72, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Wed May 01 04:26:00 CST 2013, time=2013-05-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1654958, encodeId=fb07165495856, content=<a href='/topic/show?id=35456e943af' target=_blank style='color:#2F92EE;'>#特异性T细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=67943, encryptionId=35456e943af, topicName=特异性T细胞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=237424588948, createdName=zhucaizhong7774, createdTime=Fri Jul 12 10:26:00 CST 2013, time=2013-07-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1985518, encodeId=7cd5198551860, content=<a href='/topic/show?id=e81482944a0' target=_blank style='color:#2F92EE;'>#肿瘤抗原#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=82944, encryptionId=e81482944a0, topicName=肿瘤抗原)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdqq.qlogo.cn/qqapp/101296147/385F510BDFE0F55A4FFDFDFFD9892943/100, createdBy=a3262500163, createdName=siiner, createdTime=Sat Feb 09 15:26:00 CST 2013, time=2013-02-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1794336, encodeId=608c1e9433668, content=<a href='/topic/show?id=82b416e79f5' target=_blank style='color:#2F92EE;'>#stem cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16779, encryptionId=82b416e79f5, topicName=stem cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=hb2008ye, createdTime=Tue Mar 12 18:26:00 CST 2013, time=2013-03-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1958848, encodeId=4329195884887, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3ff68, createdName=维他命, createdTime=Wed Dec 04 06:26:00 CST 2013, time=2013-12-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1481789, encodeId=249c1481e8967, content=<a href='/topic/show?id=8cc416e78f3' target=_blank style='color:#2F92EE;'>#STEM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=56, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16778, encryptionId=8cc416e78f3, topicName=STEM)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d1067833268, createdName=12498bb3m92(暂无昵称), createdTime=Wed Jan 09 01:26:00 CST 2013, time=2013-01-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1623208, encodeId=b9d016232085e, content=<a href='/topic/show?id=62a655263e9' target=_blank style='color:#2F92EE;'>#抗原#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, 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=Wed Jan 09 01:26:00 CST 2013, time=2013-01-09, status=1, ipAttribution=)]
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