可光激活的碳酸纳米立方体通过放大内质网膜压力介导的松细胞死亡来引起强大的免疫疗法
Chuan Wu1, Mingquan Gao2, Weidong Xiao3
1Department of Radiation Oncology, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610054, China.
概括
这项研究介绍了Mn-ER-Cy,这是一种新的纳米立方体,它结合了多种疗法,以克服瘤免疫疗法的挑战. 它有效地向瘤,增强免疫反应,减少免疫抑制,改善癌症治疗.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术纳米技术
- 癌症治疗 癌症治疗
背景情况:
- 瘤免疫疗法面临来自免疫抑制性瘤微环境 (TME),低瘤免疫性和低免疫激活特异性的挑战.
- 这些局限性阻碍了治疗的有效性,并可能导致与免疫相关的不良事件.
研究的目的:
- 开发一种多功能纳米立方体 (Mn-ER-Cy),用于增强瘤免疫疗法.
- 调查其协同治疗效果和成像能力.
主要方法:
- 合成了集成MnCO3和ER-Cy的Mn-ER-Cy纳米立方体,并将其向瘤细胞的内质网膜 (ER).
- 纳米立方体在808nm辐射下对光热疗法 (PTT),光动力疗法 (PDT) 和化学动力疗法 (CDT) 的有效性进行了评估.
- 评估了它们诱导热细胞死亡,调节TME pH 和作为成像剂的能力.
主要成果:
- 在瘤组织和ER器官中优先积累Mn-ER-Cy.
- 实现了协同PTT,PDT和CDT,通过NLRP3炎症酶激活诱导ER压力和热细胞死亡.
- 纳米立方体通过消耗H+和调节乳酸水平来抵消酸性TME.
- 它展示了近红外光和光声学成像的双模式成像.
结论:
- 通过增强免疫性和克服TME介导的免疫抑制,Mn-ER-Cy为协同癌症治疗提供了一个有前途的战略.
- 多功能纳米立方体有助于成像指导精密疗法,显示了改善癌症治疗结果的潜力.
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