通过通过氨酸降解的细胞外基质重塑,CEMIP2使PDAC对化疗敏感
1Department of General Surgery, Pancreatic Disease Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Shanghai Key Laboratory of Pancreatic Neoplasms Translational Medicine, Shanghai, China; Research Institute of Pancreatic Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, China; State Key Laboratory of Systems Medicine for Cancer, Shanghai Jiao Tong University, Shanghai, China; Institute of Translational Medicine, Shanghai Jiao Tong University, Shanghai, China.
Cancer letters
|July 7, 2025
概括
诱导细胞迁移的氨酶2 (CEMIP2) 通过降解氨酸 (HA) 来改善胰腺癌化疗反应. 这通过增强药物输送和重塑瘤微环境 (TME) 来降低瘤耐药性.
科学领域:
- 在瘤学瘤学.
- 癌症生物学 癌症生物学
- 瘤微环境研究 研究
背景情况:
- 胰腺管道腺癌 (PDAC) 是癌症死亡的主要原因,治疗耐药性往往是由脱塑性细胞外基质 (ECM) 驱动的.
- 氨酸 (HA) 是一个关键的ECM成分,在PDAC中丰富,具有治疗点.
- CEMIP2 (诱导细胞迁移的氨基酶2) 之前被确定为PDAC中化疗反应的生物标志物,但其功能尚不清楚.
研究的目的:
- 阐明CEMIP2在胰腺癌化学抵抗中的机制性作用.
- 调查CEMIP2,氨酸 (HA) 水平和PDAC.治疗结果之间的关系.
- 探索CEMIP2如何影响瘤微环境 (TME) 以及它对化疗疗效能的影响.
主要方法:
- 与患者化疗反应相关的CEMIP2表达的分析.
- 利用PDAC小鼠模型来评估CEMIP2对凝胺疗效,药物输送和血管密度的影响.
- 采用单细胞RNA测序 (scRNA-seq) 和飞行时间细胞计 (CyTOF) 来分析TME和免疫细胞在CEMIP2调制上的变化.
主要成果:
- 增加的CEMIP2表达与改善患者对新辅助和辅助化疗的反应相关.
- 在PDAC模型中,CEMIP2通过HA降解增强了gemcitabine的疗效,改善了药物输送和调节血管密度.
- 降低CEMIP2改变了TME,扩大了癌症相关纤维细胞 (CAF) 种群,并调节了巨细胞和T细胞等免疫细胞子集.
结论:
- CEMIP2是PDAC中化疗反应的关键调节者,通过HA降解和ECM重塑起作用.
- CEMIP2的重编程TME的能力为克服PDAC治疗抵抗提供了新的见解.
- 向CEMIP2或调节HA水平,为胰腺癌提供了一个有前途的治疗策略.
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