Recombinant human CXCL16 protein

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

CXCL16 also known as SR-PSOX is a chemokine that functions primarily in cellular signaling. It weighs approximately 32 kDa and exists in both membrane-bound and soluble forms. Primarily found in the spleen liver lungs and kidneys CXCL16 gets highly expressed on the surface of antigen-presenting cells such as dendritic cells and macrophages. This expression enables CXCL16 to perform its role in cell migration and adhesion by binding to its receptor CXCR6.

Biological function summary

CXCL16 plays a critical role in the immune response by mediating leukocyte migration. It acts as a chemoattractant for T cells especially those expressing the CXCR6 receptor facilitating their movement to sites of inflammation or injury. CXCL16 is not known to be part of a larger protein complex but interacts independently to moderate immune functions. It also participates in scavenging oxidized low-density lipoproteins linking it to processes in atherogenesis.

Pathways

CXCL16 is an important player in the inflammatory and immune pathways. It is involved in the NF-kB signaling pathway which regulates inflammatory responses and the chemokine signaling pathway. Through these pathways CXCL16 closely interacts with other chemokines and cytokines such as CCR5 and IL-8 helping coordinate immune surveillance and inflammatory cascade.

CXCL16 is heavily implicated in atherosclerosis and rheumatoid arthritis. In atherosclerosis CXCL16 contributes to the accumulation of macrophages and foam cell formation in plaques. This connection associates it with inflammatory molecules like TNF-alpha. In rheumatoid arthritis CXCL16 expression is increased in synovial tissues contributing to tissue damage and inflammation potentially linked through interactions with other inflammatory mediators such as IL-6.