对TME敏感的纳米颗粒共同准VCP,NET和双免疫检查点,用于EGFR/PD-L1/CTLA-4驱动的结直肠癌中的免疫复苏
Yu-Li Lo1, Hua-Ching Lin2, Yaorong Lee3
1Department and Institute of Pharmacology, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan; Faculty of Pharmacy, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; Research Fellow, Taipei Veterans General Hospital, Taiwan.
Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie
|September 19, 2025
概括
这项研究开发了一种用于结直肠癌 (CRC) 免疫治疗的新型纳米粒子平台,将VCP/p97抑制剂与双检查点阻断受体结合起来,以对抗免疫逃逸和治疗耐药性.
科学领域:
- 在瘤学瘤学.
- 纳米技术纳米技术
- 免疫治疗是一种免疫疗法.
背景情况:
- 结肠直肠癌 (CRC) 由于免疫逃避,转移和对当前治疗的耐药性而带来了重大挑战.
- EGFR,PD-L1和CTLA-4通路的失调有助于CRC的进展和免疫抑制.
- 瘤微环境 (TME) 通常会促进免疫抑制状态,阻碍有效的癌症治疗.
研究的目的:
- 设计一种对瘤微环境 (TME) 响应的纳米粒子平台,用于结直肠癌 (CRC) 的向组合免疫疗法.
- 为双重免疫疗法同时提供一种VCP/p97抑制剂 (NMS-873) 和双特异的PD-L1/CTLA-4吸收体.
- 开发一种补充的纳米粒子配方,用于降解中性粒细胞外细胞陷 (NETs) 和重塑免疫抑制TME.
主要方法:
- 开发 orthogonally 掩盖聚乙烯糖醇 (omPEG) 涂层的固体脂质纳米颗粒 (SLN) 用于向药物输送.
- 同时封装NMS-873以诱导内细胞网膜应激 (ERS) 和galunisertib/DNase以破坏NET并抑制瘤相关中性粒细胞 (TAN).
- 利用pH敏感的omPEG外与联体向TME内的CRC细胞,巨细胞 (TAM) 和TAN.
主要成果:
- NMS-873诱导免疫细胞死亡,细胞亡,并抑制了上皮细胞-介质细胞过渡 (EMT) 和癌症干细胞 (CSC) 特性.
- 组合疗法重新激活了抗瘤免疫力,包括树突细胞和CD8+/CD4+T细胞,同时抑制了免疫抑制因素.
- 在体内成像和分析证实了向瘤积累,有效的瘤回归和免疫重编程.
结论:
- 开发的导,TME量身定制的SLN平台为结直肠癌 (CRC) 免疫治疗提供了临床可转化策略.
- 这种方法实现了协调的免疫重编程,ERS诱导,EMT/CSC逆转,NET干扰和双检查点封锁.
- 该平台显示了在EGFR/PD-L1/CTLA-4驱动的CRC中克服化学免疫治疗耐药性的潜力.
关键词:
大肠直肠癌 (CRC) 是一种癌症.细胞内膜网膜应激压力皮质-介质细胞过渡 (EMT) 和癌症干细胞 (CSCs)免疫检查站封锁免疫检查站封锁纳米粒子药物输送方式中性粒细胞外细胞陷 (NETs)更多相关视频
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