title: The mTOR pathway and integrating immune regulation.
abstract: The mammalian target of rapamycin (mTOR) pathway is an important integrator of nutrient-sensing signals in all mammalian cells, and acts to coordinate the cell proliferation with the availability of nutrients such as glucose, amino acids and energy (oxygen and ATP). A large part of the immune response depends on the proliferation and clonal expansion of antigen-specific T cells, which depends on mTOR activation, and the pharmacological inhibition of this pathway by rapamycin is therefore potently immunosuppressive. It is only recently, however, that we have started to understand the more subtle details of how the mTOR pathway is involved in controlling the differentiation of effector versus memory CD8(+) T cells and the decision to generate different CD4(+) helper T-cell subsets. In particular, this review will focus on how nutrient sensing via mTOR controls the expression of the master transcription factor for regulatory T cells in order to maintain the balance between tolerance and inflammation.
authors: Sir William Dunn School of Pathology, University of Oxford, Oxford, UK.
authors: Stephen P
authors: SP
authors: Cobbold
mesh_terms: D000818:Animals; D018414:CD8-Positive T-Lymphocytes / Q000201:enzymology* / Q000276:immunology; D002454:Cell Differentiation; D015687:Cell Hypoxia; D004734:Energy Metabolism; D006801:Humans; D007108:Immune Tolerance; D007156:Immunologic Memory; D007249:Inflammation / Q000201:enzymology / Q000276:immunology; D008213:Lymphocyte Activation; D015398:Signal Transduction; D006377:T-Lymphocytes, Helper-Inducer / Q000201:enzymology* / Q000276:immunology; D050378:T-Lymphocytes, Regulatory / Q000201:enzymology* / Q000276:immunology; D058570:TOR Serine-Threonine Kinases / Q000378:metabolism*
chemical_list: D058570:TOR Serine-Threonine Kinases
keywords: FOXP3; metabolism; nutrient sensing; regulatory T cells
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