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Sci Immunol. 2018 Feb 9;3(20). pii: eaao1605. doi: 10.1126/sciimmunol.aao1605.

Essential immunologic orchestrators of intestinal homeostasis.

Zhou L1,2,3, Sonnenberg GF4,2,3.

Author information

1
Jill Roberts Institute for Research in Inflammatory Bowel Disease, Weill Cornell Medicine, Cornell University, New York, NY 10021, USA.
2
Joan and Sanford I. Weill Department of Medicine, Division of Gastroenterology, Weill Cornell Medicine, Cornell University, New York, NY 10021, USA.
3
Department of Microbiology and Immunology, Weill Cornell Medicine, Cornell University, New York, NY 10021, USA.
4
Jill Roberts Institute for Research in Inflammatory Bowel Disease, Weill Cornell Medicine, Cornell University, New York, NY 10021, USA. gfsonnenberg@med.cornell.edu.

Abstract

Over the past 25 years, substantial advances have been made in our understanding of the cellular and molecular pathways that are essential to maintain a state of health in the mammalian gastrointestinal tract, an organ that is densely colonized by both immune cells and trillions of microbes. Seminal studies in the 1990s identified that several cytokines, antigen-presentation molecules, and components of the T cell receptor were necessary to prevent the development of spontaneous intestinal inflammation in mice. Subsequent research revealed that these pathways orchestrate beneficial interactions with intestinal microbes, involve complex communication between innate and adaptive immune cells, and can be dysregulated in human inflammatory bowel disease. Here, we discuss how these early findings set the stage for numerous other advances and shaped our current knowledge of host-microbiota interactions and intestinal homeostasis in mammals. It is expected that continued investigation of these areas will define previously unknown immunologic mechanisms of tolerance and inflammation in the intestine that can be exploited to benefit human health.

PMID:
29440266
DOI:
10.1126/sciimmunol.aao1605
[Indexed for MEDLINE]

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