缺氧记忆调解长期的瘤内在I型干扰素抑制以促进乳腺癌的进展
Oihana Iriondo1,2,3,4, Desirea Mecenas1,2, Yilin Li1,2,5
1Department of Stem Cell Biology and Regenerative Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, California.
Cancer research
|July 11, 2024
概括
缺氧会在乳腺癌细胞中产生持久的细胞记忆,抑制免疫信号,增强转移. 这种"缺氧记忆"促进了瘤的生长和扩散,即使在恢复正常氧气水平后.
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:
- 在固体瘤中常见的缺氧驱动着进展和转移,主要是通过缺氧诱导因素 (HIF).
- 了解超出即时HIF反应的长期缺氧影响对于向转移至关重要.
研究的目的:
- 为了揭示缺氧诱导的机制,对转移产生长期影响.
- 为了研究细胞记忆在缺氧驱动的瘤进展中的作用.
主要方法:
- 检查了乳腺癌细胞系中对I型IFN信号传递和抗原呈现的低氧影响.
- 研究了依赖HIF和独立的途径.
- 评估了缺氧诱导的变化的持续性和干预措施的影响,如IRF3过度表达和肠静止剂.
主要成果:
- 缺氧降低了I型IFN信号传递和乳腺癌细胞中的抗原呈现.
- 观察到一种持久的"缺氧记忆"表型,抑制的IFN/AP在缺氧后持续存在.
- 具有缺氧记忆的细胞显示瘤发生和转移的增加.
- Entinostat 删除了这个内存,恢复了 IFN 目标.
结论:
- 缺氧建立了长期的细胞记忆,抑制了抗瘤免疫力 (IFN/AP).
- 这种记忆表型增强了乳腺癌细胞瘤发生和转移潜力.
- 准这种记忆,例如,用肠静止剂,可能提供对转移的策略.
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