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头癌外体对巨细胞两极分化的影响

Joni Yadav¹, Tanya Tripathi¹, Apoorva Chaudhary¹

¹Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), Delhi 110007, India.

|December 19, 2024

概括

人类乳头瘤病毒阴性头状细胞癌外体促进M1巨细胞的两极分化. 这通过STAT1,NF-κB和AP1信号发生,影响瘤微环境.

科学领域:

在瘤学瘤学.
免疫学免疫学免疫学
细胞生物学细胞生物学

背景情况:

瘤细胞释放出影响瘤微环境 (TME) 内的巨细胞表型的外体.
脑支状细胞癌 (HNSCC) 的外体在调节巨细胞极化中的确切作用尚未完全理解.
这项研究调查了HNSCC外体如何影响巨细胞的两极分化.

研究的目的:

研究由人类乳头瘤病毒 (HPV) 阳性和HPV阴性HNSCC细胞系衍生出来的外体在巨细胞极化中的作用.
阐明HNSCC外基因组调节巨细胞表型的分子机制.
了解外体介导的巨细胞极化对HNSCC中TME的影响.

主要方法:

从HPV阳性和HPV阴性HNSCC细胞系中分离出外体.
在使用定量实时PCR和免疫阻塞检测后评估了巨细胞两极化.
分析了包括转录和蛋白质在内的外体载荷,以寻找巨细胞两极分化的媒介.

主要成果:

阴性HPV外基因组通过静止的巨细胞 (M0) 显示出更高的吸收率.
阴性HPV外体促进了M1巨细胞的两极分化,而阳性HPV外体则诱导了混合的M1/M2表型.
外基因诱导的极化与STAT1,NF-κB和AP1信号通路的激活有关.

结论:

阴性HPV的HNSCC外体被巨细胞有效地内化,导致M1极化.
极化很可能是由STAT1,NF-κB和AP1信号通路的调节介导的.
这些发现为瘤外体在HNSCC中塑造巨细胞依赖的TME动态中的功能提供了新的见解.

关键词:

外基因组是外基因组的组成部分.头部和部状细胞癌 (HNSCC)巨细胞的两极分化信号通道的信号通道.瘤微环境 (TME) 是指瘤的微环境.

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