在瘤微环境中具有类似酶的功能的pyrrolic N-rich g-C3N4纳米片的多种治疗机制
Shanshan Song1, Miao Yang1, Fei He1
1Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China.
Journal of colloid and interface science
|July 20, 2023
概括
这项研究通过将铜离子加载到富含的二氧化碳上,开发了新的纳米酶,为瘤创造了协同疗法. 这些纳米酶有效地产生反应性氧物种,用于增强癌症治疗.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术 纳米技术
- 癌症治疗 癌症治疗
背景情况:
- 基于纳米酶的协同催化疗法对瘤有希望,但面临着瘤微环境 (TME) 的挑战.
- 现有的方法在效率和TME诱导的局限性方面扎,阻碍了临床翻译.
研究的目的:
- 开发一个高效的纳米酶平台,用于协同瘤治疗.
- 克服TME的局限性,并通过使用多模式方法增强治疗结果.
主要方法:
- 合成的烯酸含丰富的石墨碳化物 (PN-g-C3N4) 加载过渡金属形成金属-N4位点.
- 集成的铜离子 (Cu-PN-g-C3N4,CPC) 和上转化纳米粒子 (UCNPs) 来创建UCNPs@Cu-PN-g-C3N4 (UCPC) 纳米酶.
- 在近红外 (NIR) 光照射下研究了芬顿式反应,光动力学效应和ROS生成.
主要成果:
- UCPC纳米酶通过芬顿式反应有效地产生基基 (·OH),由NIR光增强.
- 即使在低氧条件下,UCPC的NIR照射会增加溶解氧,并产生超氧化基 (O2•−).
- 这些纳米酶表现出催化酶的特性,产生OH,O2•−和单片氧 (1O2) 用于联合化学动力学和光动力学治疗,在体外和体内表现出显著的抗瘤作用.
结论:
- 开发的UCPC纳米酶为瘤提供了有效的协同治疗策略.
- 这种多模式的方法克服了TME的局限性,并增强了ROS生成,以改善癌症治疗.
- 该研究强调了内源性协同治疗技术在临床应用中的潜力.
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