title: The signaling symphony: T cell receptor tunes cytokine-mediated T cell differentiation.
abstract: T cell development, differentiation, and maintenance are orchestrated by 2 key signaling axes: the antigen-specific TCR and cytokine-mediated signals. The TCR signals the recognition of self- and foreign antigens to control T cell homeostasis for immune tolerance and immunity, which is regulated by a variety of cytokines to determine T cell subset homeostasis and differentiation. TCR signaling can synergize with or antagonize cytokine-mediated signaling to fine tune T cell fate; however, the latter is less investigated. Murine models with attenuated TCR signaling strength have revealed that TCR signaling can function as regulatory feedback machinery for T cell homeostasis and differentiation in differential cytokine milieus, such as IL-2-mediated Treg development; IL-7-mediated, naïve CD8(+) T cell homeostasis; and IL-4-induced innate memory CD8(+) T cell development. In this review, we discuss the symphonic cross-talk between TCR and cytokine-mediated responses that differentially control T cell behavior, with a focus on the negative tuning by TCR activation on the cytokine effects.
authors.affiliation: Department of Microbiology and Immunology, Cornell University, Ithaca, New York, USA weishan.huang@cornell.edu averyaugust@cornell.edu.
authors.forename: Weishan
authors.initials: W
authors.lastname: Huang
authors.affiliation: Department of Microbiology and Immunology, Cornell University, Ithaca, New York, USA weishan.huang@cornell.edu averyaugust@cornell.edu.
authors.forename: Avery
authors.initials: A
authors.lastname: August
mesh_terms: D000818:Animals; D002454:Cell Differentiation / Q000276:immunology*; D016207:Cytokines / Q000378:metabolism*; D006706:Homeostasis / Q000276:immunology; D006801:Humans; D011948:Receptors, Antigen, T-Cell / Q000276:immunology*; D015398:Signal Transduction / Q000276:immunology*; D013601:T-Lymphocytes / Q000166:cytology* / Q000276:immunology*
chemical_list: D016207:Cytokines; D011948:Receptors, Antigen, T-Cell
keywords: effector function; homeostasis; pathway crosstalk; proliferation; signal rheostat