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T cells)-thereby weakening the efficacy of immune checkpoint inhibitors. Additionally, microbial metabolites may serve as potential biomarkers for predicting sensitivity to immunotherapy. Concurrently, engineered bacteria (e.g., oncolytic mineralizing bacteria) demonstrate significant antitumor effects by activating innate immunity and enhancing antitumor-specific immune responses, providing new strategies to overcome immunotherapy resistance. These findings highlight the dual role of ITM in tumor immune evasion and immunotherapy sensitivity, laying an important theoretical foundation for developing novel immunotherapy strategies targeting tumoral microbiota metabolism.
Yan et al. (Tue,) studied this question.