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Conjugated-Polymer-Based Photodynamic Therapy
Advanced Therapeutics ( IF 3.7 ) Pub Date : 2022-09-16 , DOI: 10.1002/adtp.202200165
Yaru Lu 1 , Wenbo Wu 1
Affiliation  

Photodynamic therapy (PDT) is a promising method for cancer treatment owing to its high spatiotemporal precision and minimally invasive properties. The efficiency of reactive oxygen species (ROS) production by photosensitizers (PSs) directly affects PDT efficacy. Conjugated polymers (CPs) exhibit excellent light-harvesting capabilities and effective intra- and intermolecular energy transfer between CPs and traditional PSs by the “molecular wire effect,” leading to a significant improvement in ROS generation efficiency when PSs are carefully paired with suitable CPs as energy donors. The recently proposed “polymerization-enhanced photosensitization effect” further reveals that donor–acceptor type CPs can directly function as high-performance PSs. Recently, two-photon excitation and chemiluminescence excitation technologies are employed to enhance the penetration depth, a common challenge in phototherapy of CP-based PDT systems. Furthermore, if precisely designed, CPs can endow the system with useful functions such as photothermal effects and drug-delivery capacity, which can lead to a synergistic therapy with PDT. Here, recent advances are summarized in CP-based PDT, including its underlying phenomena, mechanisms, and applications. Strategies for improving PDT performance are the focus of the discussions. In the conclusion, challenges and opportunities are discussed by considering further perspectives.

中文翻译:

基于共轭聚合物的光动力疗法

光动力疗法 (PDT) 是一种很有前途的癌症治疗方法,因为它具有高时空精度和微创特性。光敏剂 (PS) 产生活性氧 (ROS) 的效率直接影响 PDT 疗效。共轭聚合物 (CP) 表现出优异的光捕获能力,并通过“分子线效应”在 CP 和传统 PS 之间进行有效的分子内和分子间能量转移,当 PS 与合适的 CP 仔细配对时,可显着提高 ROS 生成效率能源捐助者。最近提出的“聚合增强光敏效应”进一步揭示了供体-受体型 CPs 可以直接作为高性能 PSs。最近,采用双光子激发和化学发光激发技术来提高穿透深度,这是基于 CP 的 PDT 系统光疗中的常见挑战。此外,如果经过精确设计,CP 可以赋予系统有用的功能,例如光热效应和药物输送能力,从而与 PDT 协同治疗。在此,总结了基于 CP 的 PDT 的最新进展,包括其潜在现象、机制和应用。改进 PDT 性能的策略是讨论的重点。最后,通过考虑更多的观点来讨论挑战和机遇。CPs 可以赋予系统有用的功能,例如光热效应和药物输送能力,这可以与 PDT 协同治疗。在此,总结了基于 CP 的 PDT 的最新进展,包括其潜在现象、机制和应用。改进 PDT 性能的策略是讨论的重点。最后,通过考虑更多的观点来讨论挑战和机遇。CPs 可以赋予系统有用的功能,例如光热效应和药物输送能力,这可以与 PDT 协同治疗。在此,总结了基于 CP 的 PDT 的最新进展,包括其潜在现象、机制和应用。改进 PDT 性能的策略是讨论的重点。最后,通过考虑更多的观点来讨论挑战和机遇。
更新日期:2022-09-16
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