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单细胞在遇到患者衍生的结肠癌器官时获得与瘤相关的IL1B程序

Bianca M Balzasch¹, Andreas von Kries¹, Saskia Hüll¹

¹Department of Immunobiochemistry, Mannheim Institute for Innate Immunoscience (MI3), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.

|February 22, 2026

概括

结直肠癌 (CRC) 中的瘤相关巨细胞 (TAM) 具有可塑性. 患者衍生器官 (PDO) 重新编程单细胞,模仿体内瘤微环境 (TME) 的变化,并影响抗瘤免疫力.

科学领域:

免疫学免疫学免疫学
在瘤学瘤学.
细胞生物学细胞生物学

背景情况:

瘤相关巨细胞 (TAMs) 和单细胞是结直肠癌 (CRC) 瘤微环境 (TME) 中的关键参与者.
它们在癌症中的多样性功能受到复杂的信号线索的影响,但这些信号线索仍然不太了解.
了解CRC中的单细胞重编程对于开发有效的免疫疗法至关重要.

研究的目的:

研究结直肠癌细胞如何影响单细胞表型和功能.
建立一个体外模型系统,重新总结CRC中的髓状瘤细胞相互作用.
在CRC TME中确定驱动单细胞重编程的特定分子机制.

主要方法:

共同培养系统使用微卫星稳定的CRC的原始人体单细胞和患者衍生器官 (PDOs).
单细胞RNA测序用于分析与PDOs相互作用后单细胞的转录变化.
功能性测试用于评估暴露于PDO的单细胞的炎症反应和抗原呈现.

主要成果:

与CRC PDO共同培养的单细胞获得了与患者瘤中发现的IL1B编程单细胞相似的独特表型.
这种重编程发生的独立于瘤突变状态或共识分子亚型.
来自PDO的调解剂诱导了化学激素的产生 (CXCL2,CXCL5,CXCL7) 和受损的单细胞抗原呈现.
暴露于PDO的单细胞在TLR刺激时显示出减少的炎症反应.

结论:

来自患者的有机单细胞共同培养为研究CRC中髓状细胞可塑性提供了宝贵的平台.
这个模型有效地模仿了瘤微环境中的髓状细胞重编程的关键方面.
这些发现突出了癌细胞调节单细胞功能,影响抗瘤免疫力的机制.

关键词:

在IL1B中,IL1B是IL1B.有机器人机器人机器人机器人结肠癌是什么意思结肠癌是什么意思与瘤相关的巨细胞.

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