期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 54, 期 22, 页码 6483-6487出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201500934
关键词
antitumor agents; immuno-chemotherapy; immunogenic cell death; oxidative stress; platinum
资金
- National University of Singapore
- Singapore Ministry of Education [R143-000-572-112]
There is compelling evidence suggesting that the immune-modulating effects of many conventional chemotherapeutics, including platinum-based agents, play a crucial role in achieving clinical response. One way in which chemotherapeutics can engage a tumor-specific immune response is by triggering an immunogenic mode of tumor cell death (ICD), which then acts as an anticancer vaccine. In spite of being a mainstay of chemotherapy, there has not been a systematic attempt to screen both existing and upcoming Pt agents for their ICD ability. A library of chemotherapeutically active Pt agents was evaluated in an invitro phagocytosis assay, and no correlation between cytotoxicity and phagocytosis was observed. A Pt-II N-heterocyclic carbene complex was found to display the characteristic hallmarks of a typeII ICD inducer, namely focused oxidative endoplasmic reticulum (ER) stress, calreticulin exposure, and both HMGB1 and ATP release, and thus identified as the first small-molecule immuno-chemotherapeutic agent.
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