Chinese Journal of Applied Chemistry ›› 2024, Vol. 41 ›› Issue (7): 925-936.DOI: 10.19894/j.issn.1000-0518.240061

• Review •     Next Articles

Advances of NIR--Triggered Photodynamic Therapy in Overcoming Tumor Hypoxia Environment

Yi-Qian YANG1,2,3, Xiao-Xia YAN1(), Hao PENG2,3(), Ai-Guo WU2,3, Fang YANG2,3()   

  1. 1.Department of Chemistry,Shanghai University,Shanghai 200444,China
    2.Laboratory of Advanced Theranostic Materials and Technology,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China
    3.Advanced Energy Science and Technology Guangdong Laboratory,Huizhou 516000,China
  • Received:2024-02-29 Accepted:2024-04-19 Published:2024-07-01 Online:2024-08-03
  • Contact: Xiao-Xia YAN,Hao PENG,Fang YANG
  • About author:yangf@nimte.ac.cn
    penghao@nimte.ac.cn
    xxyan@shu.edu.cn
  • Supported by:
    the Youth Innovation Promotion Association, Chinese Academy of Sciences(2022301);Ningbo 3315 Innovative Talent Project(2018-05-G)

Abstract:

Photodynamic therapy has been widely used in tumor treatment for decades because of its non-invasive nature, temporal and spatial selectivity, and lower side effects. It employs photosensitizers, light and oxygen molecules to selectively induce apoptosis and necrosis of target cells through photosensitizer-mediated generation of free radicals leading to oxidative damage. However, the drawbacks of conventional photosensitizers, limited tissue penetration of light, molecular oxygen dependence, and inherent tumor barriers against treatment have largely limited the efficacy of photodynamic therapy. Various novel photosensitizers under near-infrared light excitation have been developed in recent years to overcome these barriers and enable photodynamic therapy for deep tumors. Concerning the oxygen-deprived environment of deep tumor tissues, it is helpful to optimize the efficacy of tumor inhibition through strategies that improve, exploit the hypoxic tumor microenvironment. In this review, on the basis of elucidating the working mechanism of photodynamic therapy, we systematically summarize and discuss the recent advances in the strategy of the second near-infrared window-triggered photodynamic therapy in overcoming tumor hypoxia in the past five years, as well as the prospect of its development.

Key words: Nanomaterials, Photodynamic therapy, Tumor therapy, Second near-infrared window, Hypoxia

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