可注射的多-多糖储存器,用于通过同步的in situ化疗和支架疗法预防术后瘤复发
Jiaming Fan1,2, Xiaoyao Cai3, Han Gui3
1Tianjin Medical University, Tianjin, 300070, PR China.
Materials today. Bio
|September 16, 2024
概括
这项研究开发了一种可注射的水凝,用于同时进行化疗和支架疗法,以防止瘤复发. 响应pH的水凝有效地提供化疗和放射治疗,在临床前模型中显著减少瘤复发和转移.
科学领域:
- 生物材料科学 生物材料科学
- 在瘤学瘤学.
- 放射化学 放射化学是指辐射化学.
背景情况:
- 手术后瘤复发仍然是一个挑战,通常通过化学疗法和放射治疗的联合治疗来管理.
- 系统性副作用和协调不良限制了传统的顺序化疗和放射治疗的疗效.
- 通过生物材料同时,局部地提供化疗和放射治疗,为克服这些局限性提供了一个有希望的策略.
研究的目的:
- 开发一种可注射,pH响应的水凝储存器,用于同时进行in situ化疗和支架疗法.
- 评估这种新型水凝在预防手术后瘤复发和转移的疗效,在临床前模型的阿纳普拉西亚威尔姆斯瘤.
主要方法:
- 使用化酸和聚乙烯糖醇-聚氨酸之间的动态共价希夫基化学物质制造聚酸多糖化水凝.
- 将温克里斯 (化疗) 和-125 (胸膜疗法放射性核素) 封装到水凝中.
- 评估水凝的pH响应药物释放,稳定性,生物相容性和抗瘤功效in vitro和in vivo.
主要成果:
- 水凝证明了克里斯的智能pH响应释放,增强瘤细胞吸收,并显著降低了克里斯的IC50in vitro.
- 可注射水凝表现出极好的稳定性和生物相容性,在瘤切除模型中,在注射后的14天内保持完整性.
- 使用水凝的同时进行化疗和支架疗法有效地抑制了残留瘤细胞的生长,抑制了瘤复发,并减少了肝脏转移.
结论:
- 这项研究提出了一种有效的策略,用于同时进行术后化疗或放射治疗,使用可注射,pH响应的水凝储存器.
- 开发的生物材料显示出抑制瘤复发和转移的显著潜力.
- 这种方法为儿科耐火瘤提供了一种新的治疗途径,指导未来的治疗方案开发.
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