融合驱动的致癌计划塑造了转位细胞癌的免疫格局
bioRxiv : the preprint server for biology
|September 15, 2025
概括
转位细胞癌 (tRCC) 与透明细胞RCC具有不同的生物学,具有独特的致癌程序和免疫抑制瘤微环境. 了解 tRCCCC 的理解
科学领域:
- 在瘤学瘤学.
- 遗传学 是一个遗传学.
- 免疫学 免疫学 免疫学
背景情况:
- 细胞癌 (RCCs) 具有分子多样性,但由于对亚型特定生物学的理解不足,经常经验性治疗.
- 透明细胞RCC (ccRCC) 是最常见的亚型,目前的疗法主要针对它.
- 由TFE3基因融合定义的转位RCC (tRCC) 是一种具有不清楚生物驱动因素的攻击性亚型.
研究的目的:
- 研究转位细胞癌 (tRCC) 的独特分子和细胞特征.
- 了解特定于tRCC的致癌程序和瘤微环境 (TME).
- 根据特异性tRCC生物学来确定潜在的治疗策略.
主要方法:
- 从tRCC瘤中单细胞转录组的分析.
- tRCC的染色素可访问性概况.
- 与ccRCC进行比较分析,以确定子类型特定的差异.
主要成果:
- tRCCs表现出明显的致癌程序和明显的免疫抑制TME,尽管其起源细胞与ccRCC相似.
- 在tRCC中确定了六个保存的瘤元程序,包括上皮层-介质细胞过渡 (EMT) 和近端管道身份程序.
- TFE3融合活动调节了这些程序的平衡,驱动了与耗尽的CD8+T细胞,SPP1+巨细胞和矩阵相关纤维细胞 (mCAFs) 相关的EMT程序.
结论:
- tRCC拥有独特的TFE3聚变驱动生物学,与ccRCC显著不同.
- 与ccRCC相比,tRCC中确定的致癌性程序和免疫抑制性TME解释了其对免疫疗法的反应减少.
- 针对聚变驱动的致癌方案和tRCC TME的重编程是潜在的治疗途径.
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