Cited by 376Gut microbiota and healthCancer Immunotherapy and BiomarkersCancer Research and Treatments

Modulating the microbiome to improve therapeutic response in cancer

Open access
McQuade, Jennifer L, Daniel, Carrie R, Helmink, Beth A, Wargo, Jennifer A·2019·The Lancet Oncology

Abstract

Although novel therapies, including immunotherapy, have dramatically improved outcomes for many patients with cancer, overall outcomes are heterogeneous and existing biomarkers do not reliably predict response. To date, predictors of response to cancer therapy have largely focused on tumour-intrinsic features; however, there is growing evidence that other host factors (eg, host genomics and the microbiome) can substantially affect therapeutic response. The microbiome, which refers to microbiota within a host and their collective genomes, is becoming increasingly recognised for its influence on host immunity, as well as therapeutic responses to cancer treatment. Importantly, microbiota can be modified via several different strategies, affording new angles in cancer treatment to improve outcomes. In this Review, we examine the evidence on the role of the microbiome in cancer and therapeutic response, factors that influence and shape host microbiota, strategies to modulate the microbiome, and present key unanswered questions to be addressed in ongoing and future research.

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  • Dysbiosis of the gut microbiome confers a predisposition to certain malignancies and influences the body's response to chemotherapy, radiotherapy, and immunotherapy.

    “Studies have suggested that dysbiosis of the gut microbiome confers a predisposition to certain malignancies and influences the body’s response to a variety of cancer therapies, including chemotherapy, radiotherapy, and immunotherapy6,8–11.”
  • The composition of gut microbiota is mostly shaped by environmental factors, particularly diet and medications.

    “Gut microbiota are largely determined by environmental exposure, especially what we ingest, i.e., diet and medications.12,18,131”
  • Many bacteria linked to ICI response have known dietary associations, and dietary patterns such as plant-based versus western diet correlate with higher or lower relative abundances of these candidate taxa.

    “Many bacteria associated with ICI response have known dietary associations, such that specific dietary patterns (e.g., plant-based versus western diet) are associated with increased or decreased relative abundances of these candidate taxa.131–135”
  • The microbial response to dietary intervention differs among individuals, making straightforward prediction of results difficult.

    “In addition, the microbial response to dietary intervention varies among individuals, complicating straightforward prediction of results.131,143”
  • After an individual returns to their habitual diet, diet-induced changes to the metabolome and microbiota are reversed.

    “changes to the metabolome/microbiota are reversed after an individual reverts to their habitual diet.131,142”

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Research works printed but not linked: 3

  1. [24]van Nood E, Dijkgraaf MG, Keller JJ. Duodenal infusion of feces for recurrent Clostridium difficile. N Engl J Med 2013; 368: 2145. 23718168
  2. [53]Iida N, Dzutsev A, Stewart CA, Commensal bacteria control cancer response to therapy by modulating the tumor microenvironment. Science 2013; 342: 967– 70. 24264989 PMC6709532
  3. [78]Colbert LE, Previs R, Medrano AYD, Rectal microbiome diversity predicts disease response at completion of radiation therapy for squamous cell carcinoma of the cervix. Int J Radiat Oncol Biol Phys 2017; 99: S51.

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Authors
McQuade, J. L., Daniel, C. R., Helmink, B. A., & Wargo, J. A.
Affiliations
The University of Texas MD Anderson Cancer Center (US)
Corresponding author
Wargo, Jennifer A
Venue
The Lancet Oncology
Publisher
Elsevier BV
Published
2019-02
Volume
20
Issue
2
Pages
e77-e91
ISSN
1470-2045 (ISSN-L)
OpenAlex
W2911909218
Cited by
376
References
112
Citations by year
2026: 34 · 2025: 44 · 2024: 49 · 2023: 52 · 2022: 64 · 2021: 53 · 2020: 54 · 2019: 26
FWCI
4.35
Type
journal article
Language
en
Open access
Locations
  • The Lancet Oncology (acceptedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (publishedVersion)
Funders
National Cancer Institute (P50CA221703, L30 CA162156, R01CA219896, R25CA203650, P30CA016672)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biotechnology › Cancer Research and Treatments
Keywords
gut microbiota, microbiota modulation, cancer immunotherapy, treatment response prediction, host factors, host genomics, host immunity, microbiome-targeted therapy
MeSH terms
Gastrointestinal Microbiome, Humans, Neoplasms, Treatment Outcome, Probiotics, Prebiotics, Carcinogenesis

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