向精子代谢以克服胰腺癌的免疫疗法抵抗性
Hanshen Yang1,2,3, Xiaozhen Zhang1,2,3, Sirui Zhang1,2,3
1Department of Hepatobiliary and Pancreatic Surgery, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.
Nature communications
|August 22, 2025
概括
胰腺癌中精氨酸的升高促进了免疫抑制瘤微环境 (TME),阻碍了免疫反应. 通过抑制Serpinb9对精子代谢的向提高了免疫治疗的疗效.
科学领域:
- 癌症学
- 免疫学
- 代谢途径
背景情况:
- 多氨酸,特别是精氨酸在癌症中失调,但它们在瘤微环境 (TME) 和治疗耐药性中的作用尚不清楚.
- 胰腺癌患者血精氨酸水平升高与预后不佳相关,表明其临床意义.
研究的目的:
- 研究聚胺代谢对胰腺癌TME的影响.
- 确定精氨酸影响免疫细胞功能的分子机制,并促进治疗耐药性.
主要方法:
- 多种组分分析以确定精子代谢中的关键参与者.
- 生物化学测试以阐明Serpinb9和精子合成酶 (SMS) 之间的相互作用.
- 在体内和体外研究,以评估精子积对免疫细胞的影响和治疗疗效.
主要成果:
- Serpinb9被确定为精子代谢的关键调节者,稳定精子代谢并增加精子的产生和分泌.
- 在TME中积累的精子会损害CD8+T细胞的功能,并促进前瘤巨细胞的两极分化,从而形成免疫抑制的环境.
- 破坏Serpinb9-SMS相互作用的小显著提高了免疫检查点阻塞治疗的有效性.
结论:
- 在胰腺癌中积累的精子会导致免疫抑制和耐药性.
- 向Serpinb9-SMS相互作用是增强胰腺癌免疫疗法的新疗法.
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