TTPAL Protein, TL1 Protein, TL1A Protein, VEGI Protein, VEGI192A Protein, Tl1 Protein, Tl1a Protein, Vegi Protein, tumor necrosis factor superfamily member 15 Protein, TNF superfamily member 15 Protein, tumor necrosis factor (ligand) superfamily, member 15 Protein, TNFSF15 Protein, Tnfsf15 Protein
背景
TNF-like cytokine 1A (TL1A) and its receptors, death receptor 3 (DR3) and decoy receptor 3 (DcR3) are members of the TNF and TNF receptor superfamilies of proteins, respectively. Binding of APC-derived TL1A to lymphocytic DR3 provides co-stimulatory signals for activated lymphocytes. DR3 signaling affects not only the proliferative activity of and cytokine production by effector lymphocytes, but also critically influences the development and suppressive function of regulatory T-cells. Whereas, DcR3 restricts the function of the TL1A/DR3 complex: attenuating T-cell activation and downregulating the secretion of pro-inflammatory cytokines. Together with DR3 and DcR3, TL1A constitutes a cytokine system that actively interferes with the regulation of immune responses.