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在癌症免疫治疗中进行体内树突细胞重编程

Ervin Ascic^1,2, Fritiof Åkerström³, Malavika Sreekumar Nair^1,2

¹Molecular Medicine and Gene Therapy, Lund Stem Cell Centre, Lund University, 221 84 Lund, Sweden.

Science (New York, N.Y.)

|September 5, 2024

概括

科学家在体内将瘤细胞重新编程成树突细胞, 增强抗癌免疫力, 促进瘤衰退. 这种新型的免疫治疗方法对克服癌症患者的抗药性有希望.

科学领域:

免疫学
癌症学
基因治疗

背景情况:

癌症免疫疗法面临的挑战是由于瘤微环境中的抗原呈现不佳和免疫细胞排斥.
目前的免疫疗法在实现广泛的长期患者存活方面取得了有限的成功.

研究的目的:

开发一种用于将瘤细胞重新编程成呈抗原的树突细胞的体内方法.
研究体内免疫细胞重编程的潜力,以增强抗癌免疫力和克服治疗耐药性.

主要方法:

在体内重新编程瘤细胞的腺病毒转录因子 (PU.1,IRF8,BATF3).
对重新编程细胞呈现抗原并作为树突细胞起作用的能力的评估.
在小鼠黑色素瘤模型中评估瘤微环境重塑,T细胞招募,瘤回归和全身免疫.
在人类瘤球体和异种移植中测试重编程功效.

主要成果:

重编程的瘤细胞有效地呈现抗原,模仿1型常规树突细胞.
在体内重新编程重塑瘤微环境, 吸引和扩展细胞毒性T细胞.
在小鼠黑色素瘤模型中观察到显著的瘤回归和长期的全身免疫.
在人类瘤模型中进行了有效的重编程, 独立于免疫抑制因素.

结论:

在体内将瘤细胞重新编程成免疫树突状细胞是癌症免疫疗法的可行策略.
这种方法可以克服常见的免疫治疗局限性,例如抗原呈现不佳和免疫抑制.
这些发现支持在癌症治疗中进行人体临床试验的体内免疫细胞重编程.

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