Oncotarget:科学家揭示疟原虫抗肝脏肿瘤免疫机制

2017-03-14 朱汉斌;黄博纯 中国科学报

日前,中科院广州生物医药与健康研究院陈小平课题组首次揭示了疟原虫作为肿瘤抗原表达载体及其抗肝脏肿瘤(HCC)的免疫机制,这为疟原虫用于肿瘤免疫治疗提供了有力的临床前数据支持。相关研究成果已在线发表在《癌靶标》。

日前,中科院广州生物医药与健康研究院陈小平课题组首次揭示了疟原虫作为肿瘤抗原表达载体及其抗肝脏肿瘤(HCC)的免疫机制,这为疟原虫用于肿瘤免疫治疗提供了有力的临床前数据支持。相关研究成果已在线发表在《癌靶标》。

肿瘤免疫治疗利用抗原激活机体免疫,是肿瘤疫苗的重要途径之一。然而,大部分抗原诱导的特异性免疫往往强度足够但持久性不足。陈小平课题组通过构建表达GPC3蛋白的疟原虫免疫荷瘤小鼠,刺激机体产生针对GPC3的特异性CD8+T淋巴细胞杀伤肿瘤细胞。

研究结果显示,表达GPC3蛋白的疟原虫在免疫小鼠后,小鼠肝脏肿瘤明显受到抑制,其生存率得到了显着提高。与此同时,疟原虫的持续感染为肿瘤抗原的长期表达和释放提供了良好条件。该研究进一步讨论了利用人疟原虫激活肿瘤特异性CD8+T淋巴细胞杀伤肿瘤的可行性,随着疟原虫红内期及肝内期减毒虫株研究的深入,经基因改造的疟原虫用于肿瘤免疫治疗的临床前景非常值得期待。

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    2017-06-18 闆锋旦
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    2017-03-16 卡圣

    好好学习,好文章谢谢分享

    0

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    2017-03-15 卡圣

    学习了,谢谢了

    0

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    2017-03-14 1e145228m78(暂无匿称)

    学习了,谢谢作者分享!

    0

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