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Theranostics 2021; 11(7):3278-3300. doi:10.7150/thno.54227 This issue Cite

Review

Recent advances in innovative strategies for enhanced cancer photodynamic therapy

Tingting Hu¹, Zhengdi Wang¹, Weicheng Shen¹, Ruizheng Liang^1✉, Dan Yan^2✉, Min Wei^1✉

1. State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
2. Beijing Friendship Hospital, Capital Medical University, Beijing 100050, P. R. China.

✉ Corresponding author: E-mail: weiminbuct.edu.cn (Min Wei); danyanedu.cn (Dan Yan); liangrzbuct.edu.cn (Ruizheng Liang).

Abstract

Photodynamic therapy (PDT), a non-invasive therapeutic modality, has received increasing attention owing to its high selectivity and limited side effects. Although significant clinical research progress has been made in PDT, the breadth and depth of its clinical application have not been fully realized due to the limitations such as inadequate light penetration depth, non-targeting photosensitizers (PSs), and tumor hypoxia. Consequently, numerous investigations put their emphasis on innovative strategies to overcome the aforementioned limitations and enhance the therapeutic effect of PDT. Herein, up-to-date advances in these innovative methods for PDT are summarized by introducing the design of PS systems, their working mechanisms and application examples. In addition, current challenges of these innovative strategies for clinical application, and future perspectives on further improvement of PDT are also discussed.

Keywords: photodynamic therapy, light source, photosensitizers, tumor hypoxia

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