通过Rab37介导的OPN分泌丰富了SPP1+巨细胞,通过自身分泌-副分泌信号传递来驱动肺瘤的进展
You-En Yang1, Yu-An Lin2, Lun-Ling Ling1
1Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
Oncogenesis
|January 14, 2026
概括
Rab37调节肺瘤相关的巨细胞 (TAMs),通过骨质松 (OPN) 分泌促进免疫抑制性瘤微环境 (TME). 向Rab37-OPN可能提供一种新的肺癌治疗方法.
科学领域:
- 免疫学 免疫学 免疫学
- 癌症生物学 癌症生物学
- 分子生物学分子生物学
背景情况:
- 瘤相关巨细胞 (TAMs) 是瘤微环境 (TME) 和癌症进展的关键调节者.
- 驱动TAM功能异质性的分子机制尚未完全理解.
- Rab37在肺TME中的巨细胞编程中的作用需要阐明.
研究的目的:
- 为了确定TAM功能异质性的分子决定因素.
- 研究Rab37在调节肺内巨细胞状态中的作用.
- 探索针对肺癌中Rab37-osteopontin轴的治疗潜力.
主要方法:
- 单细胞RNA测序 (scRNA-seq) 用于分析Rab37野生型 (WT) 和淘汰赛 (KO) 瘤中的巨细胞群.
- 评估骨质素 (OPN) 分泌和STAT3信号激活.
- 对肺癌细胞增殖,迁移和入侵的分析.
- 在患者衍生肺癌样本中的临床相关性分析.
主要成果:
- 拉布37缺陷将TAM种群从免疫抑制Spp1+转移到Thbs1+表型.
- Rab37促进了OPN分泌,激活了STAT3信号,并诱导了类似M2的巨细胞两极分化.
- 偏性OPN信号增强了肺癌细胞的增殖,迁移和入侵.
- 在TAM中CD163,Rab37和OPN的同时表达与肺癌患者的不良预后和复发相关.
结论:
- Rab37是TAM表型和功能的关键调节者,调节OPN/STAT3信号传递.
- Rab37促进了免疫抑制的TME和肺癌的进展.
- Rab37-OPN轴代表了肺癌治疗的潜在治疗标.
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