单细胞分析确定了NOTCH3-介导的干细胞之间的相互作用,促进微环境重塑和入侵肺腺癌
Handan Xiang1, Yidan Pan2, Marc A Sze2
1Discovery Immunology, Merck & Co., Inc., Cambridge, Massachusetts.
Cancer research
|February 9, 2024
概括
NOTCH3信号传递在肺腺癌层中促进癌症的进展和低生存率. 向NOTCH3可以通过减少原和侵袭来改善免疫治疗反应.
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:
- 肺腺癌 (LUAD) 治疗已被免疫疗法改变,但许多患者没有反应.
- 流体介导的耐药性是限制LUAD免疫疗法的有效性的关键因素.
- 了解瘤流体生物学对于改善LUAD治疗结果至关重要.
研究的目的:
- 为了研究细胞和分子机制的树叶生物学在LUAD.
- 确定关键的信号通路,调节树皮细胞相互作用和瘤进展.
- 探索NOTCH3信号传递在LUAD流体中的作用及其对患者生存的影响.
主要方法:
- 单细胞RNA测序来自9名先前未接受治疗的LUAD患者的256,379个细胞.
- 图像质量细胞测量用于分析树皮细胞和内皮细胞之间的空间相互作用.
- 体受体相互作用组建模型以识别信号通路.
- 对NOTCH信号的药理和遗传操纵.
- 大量RNA测序以将NOTCH3表达与生存和免疫疗法反应特征相关联.
主要成果:
- 与癌症相关的纤维细胞 (CAFs) 和细胞周细胞在LUAD瘤中被丰富,并与内皮细胞 (ECs) 相互作用.
- NOTCH信号传递,特别是涉及NOTCH3,驱动介质细胞和EC之间的相互作用.
- 阻止NOTCH信号减少了原蛋白的产生,并抑制了瘤细胞的入侵.
- 高NOTCH3表达与路瘤丰富的LUAD患者的生存率差相关.
- 一个T细胞炎症的基因特征预测只有在NOTCH3表达低的患者中生存.
结论:
- NOTCH3信号传递在激活与瘤相关的介质细胞和重塑LUAD层中起着至关重要的作用.
- NOTCH3促进原蛋白的产生和细胞入侵,导致患者的治疗结果不佳.
- 向NOTCH3信号表示一种潜在的治疗策略,以克服 stromal-mediated 耐药性和改善 LUAD 免疫疗法反应.
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