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Potential of fecal microbiota for early-stage detection of colorectal cancer

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Item Type:Article
Title:Potential of fecal microbiota for early-stage detection of colorectal cancer
Creators Name:Zeller, G. and Tap, J. and Voigt, A.Y. and Sunagawa, S. and Kultima, J.R. and Costea, P.I. and Amiot, A. and Boehm, J. and Brunetti, F. and Habermann, N. and Hercog, R. and Koch, M. and Luciani, A. and Mende, D.R. and Schneider, M.A. and Schrotz-King, P. and Tournigand, C. and Tran Van Nhieu, J. and Yamada, T. and Zimmermann, J. and Benes, V. and Kloor, M. and Ulrich, C.M. and von Knebel Doeberitz, M. and Sobhani, I. and Bork, P.
Abstract:Several bacterial species have been implicated in the development of colorectal carcinoma (CRC), but CRC-associated changes of fecal microbiota and their potential for cancer screening remain to be explored. Here, we used metagenomic sequencing of fecal samples to identify taxonomic markers that distinguished CRC patients from tumor-free controls in a study population of 156 participants. Accuracy of metagenomic CRC detection was similar to the standard fecal occult blood test (FOBT) and when both approaches were combined, sensitivity improved > 45% relative to the FOBT, while maintaining its specificity. Accuracy of metagenomic CRC detection did not differ significantly between early- and late-stage cancer and could be validated in independent patient and control populations (N = 335) from different countries. CRC-associated changes in the fecal microbiome at least partially reflected microbial community composition at the tumor itself, indicating that observed gene pool differences may reveal tumor-related host-microbe interactions. Indeed, we deduced a metabolic shift from fiber degradation in controls to utilization of host carbohydrates and amino acids in CRC patients, accompanied by an increase of lipopolysaccharide metabolism.
Keywords:Cancer Screening, Colorectal Cancer, Fecal Biomarkers, Human Gut Microbiome, Metagenomics
Source:Molecular Systems Biology
ISSN:1744-4292
Publisher:EMBO Press (U.S.A.)
Volume:10
Number:11
Page Range:766
Date:28 November 2014
Official Publication:https://doi.org/10.15252/msb.20145645
PubMed:View item in PubMed

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