衰老的CAFs可以调节免疫抑制并驱动乳腺癌的进展
Jiayu Ye1, John M Baer2, Douglas V Faget1
1Department of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, Missouri.
Cancer discovery
|April 29, 2024
概括
衰老癌症相关纤维细胞 (senCAFs) 通过抑制自然杀手 (NK) 细胞活性来促进乳腺癌的生长. 消除senCAF释放NK细胞,限制瘤的进展,并提供一个潜在的老化疗法目标.
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:
- 瘤微环境 (TME) 在瘤发生过程中至关重要,其基因表达预测乳腺癌的结果.
- 在TME内的癌症相关纤维细胞 (CAF) 亚型在瘤发育中没有明确的作用.
- 确定CAF的特定作用对于理解和准乳腺癌进展至关重要.
研究的目的:
- 识别和表征癌症相关纤维细胞 (CAFs) 的特定亚型,参与乳腺瘤进展.
- 阐明这些纤维细胞促进瘤生长的机制.
- 评估向乳腺癌中这些细胞的治疗潜力.
主要方法:
- 在乳腺癌研究中使用MMTV-PyMT;INK-ATTAC (INK) 鼠标模型.
- 在小鼠和人类的乳腺瘤中确定了衰老的CAF (senCAF).
- 评估了senCAFs对自然杀手 (NK) 细胞细胞毒性和瘤生长的影响.
- 在各种人类乳腺癌亚型 (HER2+,ER+,三阴性乳腺癌,DCIS) 中研究了senCAF的存在和预测价值.
主要成果:
- 在乳腺瘤中,确定了一组肌纤维细胞CAFs (myCAFs) 作为老化 (senCAFs) 的子集.
- 证明senCAFs分泌细胞外基质,抑制NK细胞细胞毒性,促进瘤生长.
- 表明消除senCAF可以恢复NK细胞的活动,并限制瘤生长.
- 证实 senCAF 在各种人类乳腺癌和 in situ 管道癌 (DCIS) 中存在,它们与瘤复发相关.
结论:
- 衰老癌症相关纤维细胞 (senCAFs) 通过损害NK细胞介导的抗瘤免疫力,积极促进乳腺癌的进展.
- 针对senCAFs,可能通过老化疗法,是抑制乳腺癌发展和复发的有希望的策略.
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