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Sci Transl Med:基因修饰T细胞帮助免疫系统攻击肿瘤

2014-11-17 佚名 生物谷

基因修饰T细胞因可帮助人体免疫系统识别并攻击肿瘤,为此被称为肿瘤治疗的"第五支柱"。 上述治疗方法已经在血癌,如白血病中显示出治疗功效。在某些肿瘤类型如间皮瘤治疗过程中,当这些“修修补补”的T细胞被再注入到患者血液中时,患者肿瘤会很好抵抗T细胞攻击。 研究人员试图直接向肿瘤区域提供基因修饰后的T细胞,并发现这些T细胞不仅攻击了癌细胞,同时成功阻断了癌症再次发生。他们的研究结果发表在Scienc

基因修饰T细胞因可帮助人体免疫系统识别并攻击肿瘤,为此被称为肿瘤治疗的"第五支柱"。

上述治疗方法已经在血癌,如白血病中显示出治疗功效。在某些肿瘤类型如间皮瘤治疗过程中,当这些“修修补补”的T细胞被再注入到患者血液中时,患者肿瘤会很好抵抗T细胞攻击。

研究人员试图直接向肿瘤区域提供基因修饰后的T细胞,并发现这些T细胞不仅攻击了癌细胞,同时成功阻断了癌症再次发生。他们的研究结果发表在Science Translational Medicine杂志上。

该研究主要使用人源T细胞和小鼠肿瘤,其研究结果有助于加快开展1期临床试验。研究人员尝试了两种静脉注射,将重新装备(基因修饰)的T细胞注射入间皮瘤小鼠胸膜腔。奇怪的是,当基因修饰的T细胞到达肿瘤部位,它们能“看到”敌人(癌细胞),激活自己的同时也激活其他T细胞。

十多年来,研究人员已经尝试了基因改变T细胞使其产生受体,以匹配肿瘤细胞的抗原。上个月,研究人员在费城儿童医院报道,当患者的T细胞进行基因修饰并重新引入患者体内后,30名晚期复发的白血病患者中有27名患者经历缓解期。

原始出处

Adusumilli PS1, Cherkassky L2, Villena-Vargas J2, Colovos C2, Servais E2, Plotkin J3, Jones DR4, Sadelain M5.Regional delivery of mesothelin-targeted CAR T cell therapy generates potent and long-lasting CD4-dependent tumor immunity.Sci Transl Med. 2014 Nov

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    2015-02-21 bsmagic9140
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    2014-11-19 zhangyxzsh
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