乳腺癌转移中的ISG15驱动的免疫调节和瘤进展:从单细胞和空间转录组学的见解
Hua Shao1, Hanlu Tang2, Huiying Lin2
1Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, 110004, China.
BMC medicine
|February 4, 2026
概括
乳腺癌干细胞中的干扰素刺激基因15 (ISG15) 通过促进M2巨分离和抑制T细胞反应,驱动淋巴结转移. 沉默ISG15抑制瘤生长和转移,确定ISG15作为潜在的治疗标.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 癌症干细胞 (CSC) 是乳腺癌 (BRCA) 进展和转移的关键驱动因素.
- 了解CSC如何调节免疫微环境对于开发有效疗法至关重要.
- 这项研究侧重于CSC介导的免疫调节,特别是巨细胞和T细胞相互作用,在转移传播期间.
研究的目的:
- 研究CSC在乳腺癌转移期间重塑免疫微环境中的作用.
- 阐明CSCs影响巨细胞极化和T细胞活性的特定机制.
- 确定关键的分子参与者,如ISG15,参与CSC驱动的免疫逃避和转移.
主要方法:
- 为初级和转移性组织分析建立了一种小鼠正位素乳腺癌模型.
- 采用单细胞RNA测序和空间转录组学来描述细胞异质性和通信.
- 利用体外CSC模型和体内小鼠研究来评估ISG15在瘤生长,入侵和免疫调节中的功能.
主要成果:
- CSCs在转移性淋巴结中得到丰富,与M2巨细胞极化和T细胞激活减少相关.
- 在转移性瘤中,高ISG15表达与M2极化和免疫抑制有关.
- 在体外和体外,ISG15增强了CSC自我更新和侵入性,通过IL-10促进了M2极化,并上调了PD-L1以抑制T细胞.
结论:
- 乳腺癌CSC中的ISG15通过使巨细胞偏向M2表型并抑制T细胞反应来促进淋巴结转移.
- ISG15通过IL-10和PD-L1途径调解免疫逃避,有助于瘤的进展.
- ISG15是抑制乳腺癌转移和克服免疫抑制的有希望的治疗标.
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