设计的TIGIT阻塞膜囊泡与微波除协同作用,以调节肝转移 根除肝转移
Shaoyue Li1,2,3, Weichen Xu1, Yuting Shen2
1Department of Medical Ultrasound, Shanghai Tenth People's Hospital, Ultrasound Research and Education Institute, School of Medicine, Tongji University, Shanghai, P. R. China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|February 8, 2026
概括
研究人员开发了新的工程囊泡 (Bev@TPNVs),以准微波切除 (MWA) 后的肝转移. 这些囊泡抑制瘤再生,增强免疫反应,显著减少转移并改善小鼠的存活率.
科学领域:
- 在瘤学瘤学.
- 免疫治疗是一种免疫疗法.
- 生物技术是生物技术.
背景情况:
- 微波切除 (MWA) 对于肝转移是有效的,但由于瘤细胞在临死过渡区 (TZ) 发生复发.
- 该TZ表现出VEGF介导的免疫抑制微环境,CD155+髓状细胞增加,阻碍有效治疗.
研究的目的:
- 开发一种向疗法,在MWA后的TZ中消除残留的瘤细胞.
- 研究工程细胞膜囊泡的潜力,用于联合MWA和免疫疗法.
主要方法:
- 利用单细胞RNA测序和流动细胞测量来分析TZ微环境在肝转移模型.
- 工程细胞膜囊泡 (Bev@TPNVs) 封装了贝瓦西祖马布,并与TIGIT和血小板膜融合.
- 评估了Bev@TPNV的向性,抗血管性作用,T细胞恢复,以及体内治疗疗效.
主要成果:
- Bev@TPNVs专门针对肝脏和TZ,抑制了新血管化,并恢复了CD8+ T细胞的抗瘤功能.
- Bev@TPNVs显著抑制了肝转移,大约减少了10倍的肝内转移负担.
- 在治疗后70天内,在小鼠中实现了50%的存活率.
结论:
- 工程化Bev@TPNV提供了一种有希望的策略,以克服MWA诱导的免疫抑制并防止肝转移的复发.
- 这种方法有可能在肝转移移除后彻底改变联合免疫疗法,建立一种新的治疗范式.
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