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Gut microbiota - a double-edged sword in cancer immunotherapy
Miles C Andrews1, Ajithkumar Vasanthakumar2
1Department of Medicine - Alfred, Monash University, Melbourne, Victoria, Australia.
Trends in Cancer
|September 10, 2022
Summary
Immune checkpoint blockade (ICB) is a cancer therapy, but not all patients respond. Gut microbes influence ICB effectiveness and side effects, suggesting microbiome manipulation could improve cancer treatment outcomes.
Area of Science:
- Oncology
- Immunology
- Microbiome research
Background:
- Immune checkpoint blockade (ICB) has transformed cancer therapy.
- Many patients exhibit resistance or adverse effects to ICB.
- The gut microbiome's role in ICB efficacy and toxicity is increasingly recognized.
Purpose of the Study:
- To investigate the influence of gut microbiota on the effectiveness and side effects of immune checkpoint blockade (ICB) in cancer treatment.
- To explore the potential of microbiome modulation as a strategy to enhance ICB outcomes.
Main Methods:
- Analysis of patient cohorts undergoing ICB therapy.
- Microbiome profiling (e.g., 16S rRNA sequencing, metagenomics).
- Correlation studies between microbial composition and clinical response/toxicity.
Main Results:
- Specific gut microbial compositions are associated with improved ICB response.
- Certain microbial species or metabolic pathways may predict or mitigate ICB-related toxicities.
- Evidence suggests a causal link between gut microbes and ICB effectiveness.
Conclusions:
- The gut microbiome is a critical factor influencing ICB therapy success.
- Targeting the gut microbiome represents a promising avenue for optimizing cancer immunotherapy.
- Future strategies may involve personalized microbiome interventions to improve patient outcomes with ICB.
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