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具有ABCA8阳性的脂代谢CAFs在TNBC中介导免疫疗法耐药性
Weidong Qin1, Danxi Li2, Jiawei Zhang3
1Department of Epidemiology, Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, The Fourth Military Medical University, Xi'an, China.
Frontiers in oncology
|February 12, 2026
概括
脂质处理癌症相关纤维细胞 (lpCAF) 和脂质相关巨细胞 (LAM) 在三阴性乳腺癌 (TNBC) 中驱动免疫检查点阻塞抵抗. 准ABCA8-脂质轴可能会改善TNBC治疗结果.
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:
- 三阴性乳腺癌 (TNBC) 缺乏向治疗,导致预后不佳.
- 免疫检查点封锁 (ICB) 显示出希望,但在TNBC面临阻力.
- 瘤微环境 (TME) 显著影响ICB耐药性.
研究的目的:
- 阐明TNBC中ICB抗性的细胞机制.
- 在TNBC TME中调查脂质介导的肌体免疫相互作用.
- 确定提高ICB疗效的新型治疗点.
主要方法:
- 综合单细胞和TNBC样本的空间转录组学.
- 多模式交叉分析 (MIA) 用于识别空间和相互作用.
- 实验性共同培养模型用于生成和分析脂质处理CAF (lpCAF) 和巨细胞.
主要成果:
- ABCA8+ lpCAFs和APOE+脂质相关巨细胞 (LAMs) 富含了抗ICB的TNBC.
- lpCAFs通过脂质新陈代谢重编程促进M2巨细胞的两极分化,从而产生一种免疫抑制的TME.
- 高ABCA8表达与M2巨细胞增加,细胞毒性细胞减少和预后较差相关.
结论:
- 通过重编程脂质代谢,ABCA8+ lpCAFs和APOE+ LAMs通过重新编程脂质代谢,有助于TNBC ICB耐药性.
- 针对ABCA8-脂质轴提供了一个潜在的战略,以克服ICB抵抗.
- 这种方法可以改善TNBC患者的治疗结果和生存率.
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