环境敏感的树突菌体多糖化水凝嵌入微球作为术后辅助剂,以促进对黑色素瘤的级联免疫循环
Nan Gao1,2, Yiran Huang1,2, Shisuo Jing2
1School of Pharmacy, Guizhou Medical University, Guizhou 561113, China.
Theranostics
|July 12, 2024
概括
一种新的水凝系统提供离子 (Mn2+) 来增强手术后的抗瘤免疫力,显著减少瘤复发和转移. 这种无药方法提高了癌症治疗的有效性.
科学领域:
- 生物材料科学 生物材料科学
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
背景情况:
- 手术切除是癌症的初级治疗方法,但手术后瘤复发和转移仍然是一个重大挑战.
- 离子 (Mn2+) 通过激活cGAS-STING通路在癌症免疫治疗中显示出潜力,但局部传递是困难的.
- 开发用于术后癌症管理的有效策略对于改善患者的治疗结果至关重要.
研究的目的:
- 开发一种新的无药水凝系统,用于在手术后局部和持续地输送离子 (Mn2+).
- 研究Mn2+嵌入式微球在术后瘤微环境中的免疫调节作用.
- 在临床前癌症模型中评估开发的水凝系统单独或与抗PD1抗体结合的治疗疗效.
主要方法:
- 开发一种响应活性氧物种 (ROS) 的树突菌体多糖化物水凝,嵌入Mn2+-pectin微球 (MnP@DOP-Gel).
- 在体外评估MnP@DOP-Gel释放Mn2+-pectin微球 (MnP) 并诱导免疫细胞死亡和免疫细胞激活的能力.
- 在体内评估MnP@DOP-Gel在抑制皮下和转移性黑色素瘤小鼠模型中的残留瘤生长和转移的疗效,包括与抗PD1抗体的联合治疗.
主要成果:
- MnP@DOP-Gel证明了MnP的ROS反应释放,有效诱导瘤细胞免疫性死亡,并激活树突细胞和巨细胞.
- 在体内研究显示,在植入MnP@DOP-Gel.Gel后,显著抑制了残留瘤生长和转移.
- 使用MnP@DOP-Gel和抗PD1抗体的组合疗法表现出卓越的治疗效果,防止转移和脑瘤生长.
结论:
- MnP@DOP-Gel通过调节免疫反应,为术后癌症管理提供了一个有前途的无药物策略.
- 嵌入Mn2+和ROS响应的输送系统促进持续的抗瘤免疫力,可能提高手术癌症治疗结果.
- 这种创新方法有可能通过解决术后复发和转移来提高癌症治疗的有效性.
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