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Front Immunol. 2012 Mar 5;3:33. doi: 10.3389/fimmu.2012.00033. eCollection 2012.

The commensal microbiota drives immune homeostasis.

Author information

1
Michael Smith Laboratories, University of British Columbia Vancouver, BC, Canada.

Abstract

For millions of years, microbes have coexisted with eukaryotic cells at the mucosal surfaces of vertebrates in a complex, yet usually harmonious symbiosis. An ever-expanding number of reports describe how eliminating or shifting the intestinal microbiota has profound effects on the development and functionality of the mucosal and systemic immune systems. Here, we examine some of the mechanisms by which bacterial signals affect immune homeostasis. Focusing on the strategies that microbes use to keep our immune system healthy, as opposed to trying to correct the immune imbalances caused by dysbiosis, may prove to be a more astute and efficient way of treating immune-mediated disease.

KEYWORDS:

immune homeostasis; intestinal microbiota

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