绘制瘤压力网络的地图揭示了 stromal氧化应激反应的动态变化
Chen Lior1, Debra Barki1, Coral Halperin1
1Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot, Israel.
Cell reports
|May 17, 2024
概括
癌细胞面临着瘤微环境 (TME) 的压力. 这项研究绘制了这些应激反应的地图,揭示了与癌症相关的纤维细胞和细胞周细胞的特定激活,提供了新的治疗点.
科学领域:
- 在瘤学瘤学.
- 癌症生物学 癌症生物学
- 分子生物学分子生物学
背景情况:
- 瘤微环境 (TME) 对癌细胞构成重大挑战,包括可变的pH值,缺氧和自由基.
- 这些环境因素会触发细胞应激反应,这些应激反应极大地影响癌症的进展和治疗耐药性.
研究的目的:
- 为了全面地绘制四种主要癌症类型的压力反应景观:乳腺,胰腺,卵巢和前列腺.
- 研究五种关键的压力路径:热冲击,氧化压力,缺氧,DNA损伤和未展开的蛋白质压力.
- 确定特定的细胞和分子参与TME驱动的应激反应的参与者.
主要方法:
- 利用实验和计算方法的结合,创建了压力反应的详细地图.
- 分析了TME内部的应激反应模式,重点关注它们与癌细胞的接近.
- 研究了非免疫性肌层,包括与癌症相关的纤维细胞和细胞周细胞.
主要成果:
- 在TME内显示出应激反应的显著变化,癌细胞附近活动增加.
- 在不同瘤类型的免疫调节癌症相关纤维细胞中确定了NRF2的独特激活和氧化应激反应.
- 发现了一种独特的癌症相关细胞子集,表现出激活的氧化应激反应.
结论:
- 这项研究提供了TME内部压力反应的相互作用,突出了途径交叉交谈.
- 揭示了特定的树突细胞群 (纤维细胞和细胞周细胞) 作为对TME诱导的压力的关键反应者.
- 通过向瘤内的交叉生存途径来推进癌症治疗,提供潜在的治疗策略.
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