title: Metabolic control of the Treg/Th17 axis.
abstract: The interplay of the immune system with other aspects of physiology is continually being revealed and in some cases studied in considerable mechanistic detail. A prime example is the influence of metabolic cues on immune responses. It is well appreciated that upon activation, T cells take on a metabolic profile profoundly distinct from that of their quiescent and anergic counterparts; however, a number of recent breakthroughs have greatly expanded our knowledge of how aspects of cellular metabolism can shape a T-cell response. Particularly important are findings that certain environmental cues can tilt the delicate balance between inflammation and immune tolerance by skewing T-cell fate decisions toward either the T-helper 17 (Th17) or T-regulatory (Treg) cell lineage. Recognizing the unappreciated immune-modifying potential of metabolic factors and particularly those involved in the generation of these functionally opposing T-cell subsets will likely add new and potent therapies to our repertoire for treating immune mediated pathologies. In this review, we summarize and discuss recent findings linking certain metabolic pathways, enzymes, and by-products to shifts in the balance between Th17 and Treg cell populations. These advances highlight numerous opportunities for immune modulation.
authors: Department of Oncology, Immunology and Hematopoiesis Division, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
authors: Joseph
authors: J
authors: Barbi
authors: Drew
authors: D
authors: Pardoll
authors: Fan
authors: F
authors: Pan
mesh_terms: D015551:Autoimmunity; D002454:Cell Differentiation; D005786:Gene Expression Regulation; D006801:Humans; D051793:Hypoxia-Inducible Factor 1 / Q000235:genetics / Q000276:immunology; D007108:Immune Tolerance; D007249:Inflammation; D008213:Lymphocyte Activation / Q000276:immunology; D053858:Metabolic Networks and Pathways / Q000276:immunology*; D015398:Signal Transduction; D016176:T-Lymphocyte Subsets / Q000166:cytology / Q000276:immunology / Q000378:metabolism*; D006377:T-Lymphocytes, Helper-Inducer / Q000166:cytology / Q000276:immunology / Q000378:metabolism*; D050378:T-Lymphocytes, Regulatory / Q000166:cytology / Q000276:immunology / Q000378:metabolism*
chemical_list: D051793:Hypoxia-Inducible Factor 1