与B7-H3阻塞剂和NETs抑制剂一起装载的pH/ROS响应注射凝增强OSCC协同免疫疗法
1State Key Laboratory of Oral and Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|February 13, 2026
概括
这项研究开发了一种可注射的水凝,结合了B7-H3抑制剂和NETs抑制剂,用于治疗口腔癌. 智能水凝通过重新编程瘤微环境来增强免疫疗法,减少免疫抑制和转移.
科学领域:
- 在瘤学瘤学.
- 生物材料科学 生物材料科学
- 免疫治疗是一种免疫疗法.
背景情况:
- 口腔状细胞癌 (OSCC) 由于瘤微环境 (TME) 介导的免疫抑制和转移,对免疫疗法反应不佳.
- 现有的免疫疗法面临诸多挑战,包括系统性毒性和在OSCC中有限的疗效.
- 在TME中准免疫抑制因素对于增强抗瘤反应至关重要.
研究的目的:
- 开发一种可注射,双响应的水凝,用于局部输送埃诺布利图祖马布 (B7-H3阻断剂) 和Cl-amidine (NETs抑制剂).
- 研究这种组合治疗在重新编程OSCC TME和克服免疫抵抗方面的协同效应.
- 评估水凝在抑制OSCC生长,入侵和转移方面的有效性.
主要方法:
- 制造一种pH/ROS-双响应的凝,使用乙烯键和希夫结.
- 在水凝中同时加载enoblituzumab和Cl-amidine,以实现精确的TME触发释放.
- 在OSCC小鼠模型中,内注射水凝.
- 评估TME重编程,免疫细胞透 (CD4+/CD8+T细胞) 和瘤生长抑制.
- 通过抑制上皮层-介质细胞转换 (EMT) 抑制转移抑制的评估.
主要成果:
- 水凝在酸性,高ROS的TME中表现出精确的药物释放,使得高内积累在最小的全身暴露下.
- 与单一疗法或对照药物相比,内服药显著抑制了OSCC瘤的生长.
- 组合疗法有效地抑制了中性粒细胞外细胞陷 (NETs) 的形成,并促进了CD4+/CD8+T细胞的透.
- 埃诺布利图祖马布和Cl-amidine协同恢复了细胞毒性T细胞功能,并增加了抗体依赖的细胞毒性.
- 通过逆转EMT,治疗抑制了OSCC入侵和转移,具有出色的生物相容性,没有观察到系统性毒性.
结论:
- 具有pH / ROS双响应的水凝同时提供恩布利图祖马布和Cl-amidine是OSCC治疗的有希望的策略.
- 这种局部组合疗法有效地重编程免疫抑制的TME,提高免疫疗法的疗效.
- 这种方法克服了免疫抵抗,并抑制了OSCC的进展,为耐火性口腔癌提供了潜在的临床转化.
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