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Microbial metabolite as icebreaker for immunotherapy
1Department of Molecular Biology, Princeton University, Princeton, NJ 08544, USA; Ludwig Institute for Cancer Research Princeton Branch, Princeton, NJ 08544, USA.
Cell Metabolism
|April 6, 2022
Summary
Microbial metabolite TMAO enhances immunotherapy for triple-negative breast cancer (TNBC). It boosts CD8+ T cell immunity by inducing tumor cell pyroptosis, improving treatment outcomes in TNBC.
Area of Science:
- Immunology
- Oncology
- Microbiome research
Background:
- Triple-negative breast cancer (TNBC) exhibits limited response to current immunotherapy strategies.
- Understanding novel mechanisms to enhance anti-tumor immunity is crucial for TNBC treatment.
Purpose of the Study:
- To investigate the role of microbial metabolites in modulating anti-tumor immunity in TNBC.
- To explore the potential of microbial metabolite trimethylamine N-oxide (TMAO) in enhancing immunotherapy efficacy.
Main Methods:
- In vivo and in vitro studies were conducted to assess the effects of TMAO.
- Analysis of CD8+ T cell activity, tumor cell pyroptosis, and immunotherapy response in TNBC models.
Main Results:
- Trimethylamine N-oxide (TMAO) was found to significantly boost CD8+ T cell-mediated antitumor immunity.
- TMAO treatment induced pyroptosis (programmed cell death) in TNBC tumor cells.
- This induction of pyroptosis enhanced the overall efficacy of immunotherapy in preclinical TNBC models.
Conclusions:
- Microbial metabolite TMAO represents a promising therapeutic strategy to overcome immunotherapy resistance in TNBC.
- Targeting microbial metabolites like TMAO could be a novel approach to improve cancer immunotherapy outcomes.
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