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工程化全基因干细胞在免疫抑制性勒普托门性脑转移中协调T淋巴细胞驱动的免疫疗法

Nobuhiko Kanaya^1,2, Waleed Seddiq^1,2, Kok-Siong Chen^1,2

¹Center for Stem Cell and Translational Immunotherapy, Brigham and Women's Hospital, Harvard Medical School, Boston, 02115, Massachusetts, USA.

Journal of the National Cancer Institute

|January 21, 2025

概括

新的干细胞疗法显示出治疗肺癌引起的脑瘤转移的前景. 这种方法针对免疫抑制瘤微环境,改善其他治疗方法失败的结果.

科学领域:

在瘤学瘤学.
免疫治疗是一种免疫疗法.
癌症转移癌症转移

背景情况:

免疫检查点抑制剂 (ICI) 在肺到肺脑脑转移中表现出有限的疗效.
肺癌大脑转移往往呈现一种免疫抑制的瘤微环境.

研究的目的:

为了研究一种新的局部区域疗法,用于肺到肺膜瘤大脑转移.
评估提供抗PD-1药物和型病毒的工程干细胞的疗效.

主要方法:

在非小细胞肺癌脑转移中的RNA表达的分析.
开发免疫能力较强的小鼠模型,用于肺部到脑膜瘤大脑转移.
干细胞的内输送被设计为释放scFvPD-1和/或性简单性疹病毒 (oHSV).

主要成果:

大脑转移表现出一种免疫抑制的微环境,PD-1表达增加.
在小鼠模型中,用scFvPD-1进行局部内干细胞治疗改善了生存率.
释放oHSV和scFvPD-1的双干细胞表现出增强的治疗效果,诱导免疫细胞死亡并使瘤对西斯素敏感.

结论:

双干细胞 (oHSV/scFvPD-1) 的局部区域传递是肺到脑瘤脑转移的一个有希望的策略.
这种疗法有效调节免疫抑制瘤微环境.
这种方法为耐火性大脑转移提供了潜在的新治疗途径.

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