高分子工程级联调节NIR-II J-聚合物以改善光动力学疗法
Huizhe Wang1, Huijia Liu1, Wenqing Li1
1Department of Biomedical Engineering, School of Engineering, China Pharmaceutical University Nanjing 210009 China wangpeng@cpu.edu.cn.
Chemical science
|July 26, 2024
概括
研究人员开发了用于近红外II (NIR-II) 成像和癌症治疗的新有机分子. 一个分子,ATX-6,在产生单片氧气方面表现出高效率,使深层组织成像和有效的光动力学治疗成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 有机化学 有机化学
- 生物医学工程 生物医学工程
背景情况:
- 在深层组织成像和癌症治疗中开发用于近红外II (NIR-II) 应用的基于小有机分子的光敏感剂 (PSs) 仍然具有挑战性.
- 在水溶液中获得高单氧量子产量对于有效的光动力学疗法 (PDT) 和生物成像至关重要.
研究的目的:
- 为具有可调整聚合状态的NIR-II光敏剂制定一个一般的合成策略.
- 研究新型NIR-II PSs的光物理特性和自我组装行为.
- 评估这些PSs在深层组织生物成像和光动力癌症治疗方面的潜力.
主要方法:
- 通过调整硬质效应,合成六种NIR-II区域光敏化剂.
- 吸收/发射波长的表征,延伸到超过1200纳米.
- 使用DSPE-PEG2000对度依赖的J聚合和超分子工程的研究.
- 评估单点氧量子产量和光动力学疗法的疗效.
- 评估NIR-II地区的体内生物成像能力.
主要成果:
- 一个通用合成策略产生了六个NIR-II PS,具有可调整的聚合状态和扩展的NIR吸收/发射 (>1200 nm).
- ATX-6在水溶液中表现出高单氧量子产量 (38.2%) 和度依赖的J聚合.
- 在ATX-6中使用DSPE-PEG2000增强J聚合的超分子工程,促进了系统间交叉.
- ATX-6纳米粒子表现出优越的光动力学治疗效果和高对比度的体内NIR-II生物成像.
结论:
- 开发的合成策略使NIR-II PSs的合理设计能够实现可调整的聚合和高单点氧气生成.
- 由于其增强的光物理特性和体内性能,ATX-6对综合瘤诊断和治疗具有显著的前景.
- 这些发现为推进使用基于小型有机分子的NIR-II光敏剂的光学应用提供了宝贵的见解.
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