The study was modeled in germ-free knockout mice to mimic a genetic condition that affects 1 in 5 humans and increases the risk for digestive diseases. The findings appear in the Proceedings of the National Academy of Sciences.
"Our data show that factors in the differences in a host's genetic makeup — in this case genes that affect carbohydrates in the gut — interact with the type of food eaten. That combination determines the composition and function of resident microbes," says Purna Kashyap, M.B.B.S., a Mayo Clinic gastroenterologist and first author of the study. He is also a collaborator in the Microbiome Program of the Mayo Clinic Center for Individualized Medicine.Significance of the Findings
The microbiome represents millions of microbes in the gut and elsewhere in the body. They perform specialized functions to help keep metabolism in balance. Whether in humans or other animals, the microbial combination is unique and must function well with the individual's genome and diet for a healthy existence.
Additional researchers on the study include Angela Marcobal, Ph.D.; Samuel Smits; Erica Sonnenburg, Ph.D.; Elizabeth Costello, Ph.D.; Steven Higginbottom; Susan Holmes, Ph.D.; David Relman, M.D.; and Justin Sonnenburg, Ph.D.; all of Stanford University; Luke Ursell, University of Colorado at Boulder; Rob Knight, Ph.D., Howard Hughes Medical Institute and University of Colorado at Boulder; Steve Domino, M.D., Ph.D., University of Michigan; and Jeffrey Gordon, M.D., Washington University.
The research was supported by the National Institutes of Health, the Crohn's & Colitis Foundation of America, the Walter and Idun Berry Foundation, and the Thomas and Joan Merigan Endowment at Stanford.
About Mayo Clinic
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