Nature:免疫疗法——推动T细胞靶向脑肿瘤

2018-09-06 Nature自然科研 Nature自然科研

本周《自然》在线发表的一篇论文A homing system targets therapeutic T cells to brain cancer报道了一种可以促进T细胞靶向脑肿瘤的策略。这些基于细胞和小鼠研究所得的发现或对改善脑疾病治疗方法具有一定意义。

本周《自然》在线发表的一篇论文A homing system targets therapeutic T cells to brain cancer报道了一种可以促进T细胞靶向脑肿瘤的策略。这些基于细胞和小鼠研究所得的发现或对改善脑疾病治疗方法具有一定意义。


促使T细胞靶向肿瘤。

T细胞免疫疗法是一种很有前景的癌症疗法,但是T细胞靶向癌细胞的有效性依然是一大主要限制因素,特别是对于脑肿瘤而言。此外,癌细胞经常阻断吸引T细胞的机制,使它们难以被检测到。

美国贝勒医学院的Nabil Ahmed及同事发现,脑癌细胞会提高ALCAM的丰度——一种可以吸引T细胞的蛋白。该蛋白常见于恶性胶质瘤和成神经管细胞瘤——分别是在成人和儿童中间最流行的脑癌。作者设计利用一个分子(CD6)来触发T细胞附着于ALCAM,这具有提高T细胞对于癌细胞表面的另一种蛋白(ICAM1)的敏感性的连锁效应。整体而言,这种方法显著提高了癌细胞吸引T细胞的能力。



癌症内皮细胞的CAM(细胞粘附分子)表达和通透性。

作者在脑瘤小鼠身上测试了这一靶向系统,发现T细胞有力地渗入并攻击癌细胞。此外,T细胞特异性地靶向癌细胞,而没有靶向健康组织。虽然这种策略还需要进一步的测试才能走向临床应用,但是它看起来可以安全有效地提高T细胞靶向脑癌细胞的能力。

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    2019-05-08 liye789132251
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    2018-09-07 kafei

    学习了谢谢

    0

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    2018-09-07 158C71s1656

    详实

    0

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    2018-09-06 天地飞扬

    了解一下,谢谢分享!

    0

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