Abstract
An expanding body of evidence supports a role for gut microbes in the etiology of cancer. Previously, the focus was on identifying individual bacterial species that directly initiate or promote gastrointestinal malignancies; however, the capacity of gut microbes to influence systemic inflammation and other downstream pathways suggests that the gut microbial community may also affect risk of cancer in tissues outside of the gastrointestinal tract. Functional contributions of the gut microbiota that may influence cancer susceptibility in the broad sense include (1) harvesting otherwise inaccessible nutrients and/or sources of energy from the diet (i.e., fermentation of dietary fibers and resistant starch); (2) metabolism of xenobiotics, both potentially beneficial or detrimental (i.e., dietary constituents, drugs, carcinogens, etc.); (3) renewal of gut epithelial cells and maintenance of mucosal integrity; and (4) affecting immune system development and activity. Understanding the complex and dynamic interplay between the gut microbiome, host immune system, and dietary exposures may help elucidate mechanisms for carcinogenesis and guide future cancer prevention and treatment strategies.
Supported by US NIH grants U01 CA162077, R01 DK084157 and Fred Hutchinson Cancer Research Center.
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Abbreviations
- PRR:
-
Pattern recognition receptors
- ETFB:
-
Enterogenic Bacteroides fragilis
- LPS:
-
Lipopolysaccharide
- TLR-4:
-
Toll-like receptor -4
- LBP:
-
LPS-binding protein
- MSI:
-
Microsatellite unstable
- CIN:
-
Chromosomal unstable
- SRB:
-
Sulfate-reducing bacteria
- UC:
-
Ulcerative colitis
- NOC:
-
N-nitroso compounds
- ODC:
-
Ornithine decarboxylase
- DFMO:
-
Difluoromethylornithine
- ODMA:
-
O-desmethylangolensin
- ITC:
-
Isothiocyanates
- EHC:
-
Enterohepatic circulation
- SBA:
-
Secondary bile acids
- CA:
-
Cholic acid
- DCA:
-
Deoxycholic acid
- LCA:
-
Lithocholic acid
- E2 :
-
Estradiol
- E1 :
-
Estrone
- E1S:
-
Estrone-3-sulfate
- E3 :
-
Estriol
- DHEA:
-
Dehydroepiandrosterone
- 16α-OHE1:
-
16α-hydroxyestrone
- TRFLP:
-
Terminal restriction length polymorphism
- SHBG:
-
Sex-hormone-binding globulin
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Hullar, M.A.J., Burnett-Hartman, A.N., Lampe, J.W. (2014). Gut Microbes, Diet, and Cancer. In: Zappia, V., Panico, S., Russo, G., Budillon, A., Della Ragione, F. (eds) Advances in Nutrition and Cancer. Cancer Treatment and Research, vol 159. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-38007-5_22
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Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-38006-8
Online ISBN: 978-3-642-38007-5
eBook Packages: MedicineMedicine (R0)