OX40 Active Protein

This gene encodes a cytokine of the tumor necrosis factor (TNF) ligand family. The encoded protein functions in T cell antigen-presenting cell (APC) interactions and mediates adhesion of activated T cells to endothelial cells. Polymorphisms in this gene have been associated with Sjogren's syndrome and systemic lupus erythematosus. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2014]

TNFSF4: Cytokine that binds to TNFRSF4. Co-stimulates T-cell proliferation and cytokine production. Genetic variations in TNFSF4 influence susceptibility to systemic lupus erythematosus (SLE). SLE is a chronic, inflammatory and often febrile multisystemic disorder of connective tissue. It affects principally the skin, joints, kidneys and serosal membranes. It is thought to represent a failure of the regulatory mechanisms of the autoimmune system. The upstream region of TNFSF4 contains a single risk haplotype for SLE, which is correlated with increased expression of both cell-surface TNFSF4 and TNFSF4 transcripts. Increased levels of TNFSF4 are thought to augment T-cell-APC interaction and the functional consequences of T-cell activation, thereby destabilizing peripheral tolerance. Belongs to the tumor necrosis factor family.

Protein type: Cytokine; Membrane protein, integral; Cell cycle regulation

Chromosomal Location of Human Ortholog: 1q25

Cellular Component: extracellular space; cell surface; integral to plasma membrane

Molecular Function: cytokine activity; tumor necrosis factor receptor superfamily binding; tumor necrosis factor receptor binding; receptor binding

Biological Process: negative regulation of T-helper 1 cell differentiation; positive regulation of interleukin-12 production; negative regulation of cytokine secretion; positive regulation of T cell cytokine production; positive regulation of activated T cell proliferation; signal transduction; defense response to nematode; positive regulation of interleukin-10 production; T cell proliferation; positive regulation of interleukin-4 production; regulation of adaptive immune response; positive regulation of T-helper 2 cell differentiation; negative regulation of regulatory T cell differentiation; negative regulation of interferon-gamma production; positive regulation of cell proliferation; positive regulation of interleukin-13 production; positive regulation of memory T cell differentiation; cholesterol metabolic process; positive regulation of T-helper 2 type immune response; negative regulation of transcription factor activity; response to virus; positive regulation of immunoglobulin mediated immune response; positive regulation of interleukin-6 production; positive regulation of immunoglobulin secretion; positive regulation of CD4-positive, alpha beta T cell differentiation; positive regulation of interferon-gamma production; negative regulation of interleukin-17 production; positive regulation of B cell activation; regulation of inflammatory response; positive regulation of interleukin-2 production; immune response; positive regulation of alpha-beta T cell proliferation; negative regulation of transcription, DNA-dependent; acute inflammatory response; positive regulation of inflammatory response

Disease: Myocardial Infarction, Susceptibility To