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Immunomodulatory effect of cisplatin and carboplatin in human and mouse cell line in vitro

ABSTRACT: The Phase 3 1L urothelial carcinoma (IMvigor130) trial revealed more favorable effects on overall survival with atezolizumab combined with gemcitabine and cisplatin (GemCis) than with atezolizumab combined with gemcitabine and carboplatin (GemCarbo). This study investigates the immunomodulatory effects of cisplatin vs carboplatin as a potential explanation for these clinical observations. GemCis compared with GemCarbo ± atezolizumab induced transcriptional changes in circulating immune cells, including upregulation of antigen presentation and T-cell activation programs. In vitro experiments demonstrated that cisplatin, compared with carboplatin, exerted direct immunomodulatory effects on cancer cells, promoting dendritic cell activation and antigen-specific T cell killing. These results underscore the key role of immune modulation in cisplatin's efficacy in urothelial carcinoma and highlight the potential importance of specific chemotherapy backbones for immune checkpoint blockade combination therapies.

ORGANISM(S): Mus musculus Homo sapiens

PROVIDER: GSE235066 | GEO | 2023/11/02

REPOSITORIES: GEO

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