Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 61, Issue 43, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202210988
Keywords
DNA Binding; Photoimmunotherapy; Pt-II Complexes; Pyroptosis; cGAS-STING
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Funding
- National Natural Science Foundation of China [22022707, 22177142, 21837006, 91953117]
- Fundamental Research Funds for the Central Universities
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This study presents two Pt-II complexes as photoactivators of the cGAS-STING pathway, which can activate the pathway and induce pyroptosis under light irradiation, leading to intense anticancer immune responses.
Activation of the cyclic GMP-AMP synthase-stimulator of the interferon gene (cGAS-STING) pathway is a potent anticancer immunotherapeutic strategy, and the induction of pyroptosis is a feasible way to stimulate the anticancer immune responses. Herein, two Pt-II complexes (Pt1 and Pt2) were designed as photoactivators of the cGAS-STING pathway. In response to light irradiation, Pt1 and Pt2 could damage mitochondrial/nuclear DNA and the nuclear envelope to activate the cGAS-STING pathway, and concurrently induce pyroptosis in cancer cells, which evoked an intense anticancer immune response in vitro and in vivo. Overall, we present the first photoactivator of the cGAS-STING pathway, which may provide an innovative design strategy for anticancer immunotherapy.
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