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NIR afterglow nanosystem for photodynamic therapy.

ABSTRACT: Within the milieu of immune dysfunction, reactive oxygen species (ROS) play a pivotal role in inducing immunogenic cell death (ICD), countering the dysregulated tumor microenvironment. However, the administration of ROS at indiscriminate dosages may provoke deleterious immune responses. Therefore, precise regulation of ROS production is crucial to achieve efficacious therapeutic outcomes. We engineered an innovative afterglow nanosystem which is capable of real-time monitoring of ROS levels. Our findings reveal that Ru/CYQ@CPPO exhibits a markedly enhanced and prolonged afterglow luminescence, coupled with superior singlet oxygen (O₂) generation, compared to the commercially available indocyanine green (ICG). In vitro studies demonstrated that Ru/CYQ@CPPO exhibits remarkable efficacy in photodynamic therapy (PDT) under irradiation at a wavelength of 450 nm. Furthermore, a significant correlation (R ² = 0.987) was observed between the intensity of afterglow luminescence and the rate of cancer cell inhibition.

SUBMITTER: Shu B

PROVIDER: S-EPMC11259105 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature

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NIR afterglow nanosystem for photodynamic therapy.

Shu Bingxin B Zhao Shubi S Zhang Yuling Y Sun Qinchao Q Huang Zhen Z

RSC advances 20240719 32

Within the milieu of immune dysfunction, reactive oxygen species (ROS) play a pivotal role in inducing immunogenic cell death (ICD), countering the dysregulated tumor microenvironment. However, the administration of ROS at indiscriminate dosages may provoke deleterious immune responses. Therefore, precise regulation of ROS production is crucial to achieve efficacious therapeutic outcomes. We engineered an innovative afterglow nanosystem which is capable of real-time monitoring of ROS levels. Our ...[more]

PMID: 39035721

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