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Precision Probiotic Medicine to Improve ICB Immunotherapy
Blanda Di Luccia, Marco Colonna1
1Department of Pathology and Immunology, Washington University in St. Louis-School of Medicine, St. Louis, Missouri.
Cancer Discovery
|May 2, 2022
Summary
Probiotic exopolysaccharide EPS-R1 expands gut T cells, enhancing response to cancer immunotherapy (ICB). This finding offers new avenues for microbial-based cancer treatments.
Area of Science:
- Immunology
- Microbiology
- Cancer Research
Background:
- Gut microbiota and probiotics influence cancer immunotherapy.
- Identifying microbial metabolites to enhance tumor immune therapy is crucial.
Discussion:
- Exopolysaccharide EPS-R1 from Lactobacillus delbrueckii subsp. bulgaricus augments ICB therapy response.
- EPS-R1 expands Peyer's patches CCR6+ CD8+ T cells.
- These T cells migrate to tumors, enhancing antitumor activity.
Key Insights:
- Microbial exopolysaccharides can modulate the immune system for therapeutic benefit.
- Targeting gut T cell populations may improve cancer treatment efficacy.
- Lactobacillus-derived compounds show promise in immuno-oncology.
Outlook:
- Further research into EPS-R1 and similar molecules for cancer therapy development.
- Exploring the mechanisms of T cell migration and tumor infiltration.
- Investigating the broader applications of probiotic metabolites in cancer treatment.
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