PNAS:“身体巡逻队”——癌细胞的“克星”!

2017-05-16 Heather_z727 来宝网

澳大利亚加文医学研究所的科学人员发现专为消灭癌细胞“量身定做”的免疫细胞也可以进行转移,这一发现为发展免疫疗法带来新希望,研究报告发表于《美国国家科学院》院刊上。



澳大利亚加文医学研究所的科学人员发现专为消灭癌细胞“量身定做”的免疫细胞也可以进行转移,这一发现为发展免疫疗法带来新希望,研究报告发表于《美国国家科学院》院刊上。

转移性癌症,也就是原发肿瘤向身体其他器官发生转移,是癌症致死的一大原因,可选的治疗方法非常有限,通过训练自身免疫细胞对抗癌细胞的免疫疗法对转移性癌症的治疗初见效果,然而人们对这一疗法的治癌机制却所知不多。

研究人员表示:“我们都知道T细胞和其他的免疫细胞会在癌细胞中聚集,然而之后会发生什么,我们就全然不知了。癌细胞所处的环境会改变免疫细胞吗?他们会从癌细胞中离开吗?哪些免疫细胞会离开?他们去了哪里?为什么离开呢?”

为了解决这些问题,研究人员通过实验小鼠进行了光转移实验,他们把小鼠所有的细胞都贴上绿色荧光化合物,而那些癌细胞之内的免疫细胞遇光会变红。“通过观察,我们发现这些红光免疫细胞会离开肿瘤细胞,进入绿色的海洋,除此之外,我们还发现,这些离开肿瘤细胞的免疫细胞进入了淋巴结,并慢慢游走到另一个癌细胞中去。”

而且,研究人员还发现,不同种类的免疫细胞相继离开原发癌细胞,其中最具代表性的就是T细胞,还有CD+8,它辅助T细胞促进肿瘤的摧毁。

原始出处:
Tommaso Torcellan, Henry R. Hampton, Jacqueline Bailey, el al. In vivo photolabeling of tumor-infiltrating cells reveals highly regulated egress of T-cell subsets from tumors. PNAS (2017).

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    2017-05-25 drwjr
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    2017-05-18 yxch36
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    2017-05-17 doctorJiangchao

    谢谢分享。

    0

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    2017-05-16 明天会更好!

    学习了,谢谢分享!

    0

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    2017-05-16 luominglian113

    免疫细胞也转移,谢谢分享

    0

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    2017-05-16 dhzzm

    学习了分享了

    0

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    2017-05-16 cqykthl

    就是不能转化为临床运用的东西

    0

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