alexa TIM-4 is the ligand for TIM-1, and the TIM-1-TIM-4 interaction regulates T cell proliferation.
Immunology

Immunology

Immunome Research

Author(s): Meyers JH, Chakravarti S, Schlesinger D, Illes Z, Waldner H, , Meyers JH, Chakravarti S, Schlesinger D, Illes Z, Waldner H,

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Abstract The newly identified TIM family of proteins is associated with regulation of T helper type 1 (T(H)1) and T(H)2 immune responses. TIM-1 is genetically linked to asthma and is a receptor for hepatitis A virus, but the endogenous ligand of TIM-1 is not known. Here we show that TIM-4, which is expressed by antigen-presenting cells, is the ligand for TIM-1. In vivo administration of either soluble TIM-1-immunoglobulin (TIM-1-Ig) fusion protein or TIM-4-Ig fusion protein resulted in hyperproliferation of T cells, and TIM-4-Ig costimulated T cell proliferation mediated by CD3 and CD28 in vitro. These data suggest that the TIM-1-TIM-4 interaction is involved in regulating T cell proliferation. This article was published in Nat Immunol and referenced in Immunome Research

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