PNAS:西安交大在自然杀伤细胞调控肺癌免疫方面取得新突破

2018-12-06 佚名 西安交大新闻网

自然杀伤(NK)细胞与主要组织相容性I类分子(MHC-I)的相互作用在肿瘤免疫中起重要作用,NK细胞通过与MHC-I类分子相互作用而获得“教育”(education),成为“授权”(licensed)的NK细胞,“授权”的NK细胞具有增强杀伤靶细胞的能力,在肿瘤的发生、发展中具有重要作用。NK细胞与肺癌的易感性及耐药性密切相关,但NK细胞介导的清除肺癌的机制仍不清楚。

自然杀伤(NK)细胞与主要组织相容性I类分子(MHC-I)的相互作用在肿瘤免疫中起重要作用,NK细胞通过与MHC-I类分子相互作用而获得“教育”(education),成为“授权”(licensed)的NK细胞,“授权”的NK细胞具有增强杀伤靶细胞的能力,在肿瘤的发生、发展中具有重要作用。NK细胞与肺癌的易感性及耐药性密切相关,但NK细胞介导的清除肺癌的机制仍不清楚。


在MHCI+/+小鼠中,NK细胞控制肺癌生长

近日,西安交大一附院感染科和肿瘤外科研究团队最新发表一项研究成果,揭示了暴露于MHC-I类分子的NK细胞为肺癌的生长和进展提供了显着的免疫屏障,证明基于MHC-I分子的环境背景,NK细胞的NKG2D、NKp46等激活性受体和Ly49C/I等抑制性受体表现出动态可塑性,提示改变NK细胞活化状态有助于控制肺癌。此项研究成果对未来NK细胞用于免疫治疗以及MHC-I类分子在预测癌症患者免疫治疗的疗效中或将有重要作用。该成果以“Modulation of NKG2D, NKp46, and Ly49C/I facilitates natural killer cell-mediated control of lung cancer”为题,发表在国际著名期刊PNAS上。

该研究受到了国家留学基金委公派留学基金的资助。

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    2019-09-06 drwjr
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