Recombinant Human OX40L/TNFSF4 protein (GST tag N-Terminus)

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OX40L also known as TNFSF4 is a member of the tumor necrosis factor (TNF) ligand family. It is a type II transmembrane protein with a molecular weight of about 32 kDa. OX40L is expressed mainly on activated antigen-presenting cells such as B cells dendritic cells and macrophages. The protein interacts specifically with its receptor OX40 (CD134) which is found on activated T cells mainly CD4+ T cells. These interactions are important for the regulation of immune responses.

Biological function summary

OX40L acts as a costimulatory signal for T cells. It does not work alone; it functions as part of the immune complex involved in enhancing T cell proliferation cytokine production and survival. OX40L enhances the immune response making it a critical modulator of immunity. This protein interaction is essential for promoting an effective adaptive immune response influencing T cell memory and maintaining immune system balance.

Pathways

OX40L is involved in the TNF receptor pathway which plays an important role in cell survival and inflammation. It influences the NF-κB signaling pathway which regulates immune response and cell proliferation. OX40L interactions also involve the Akt pathway important for T cell survival and function. The related proteins in these pathways include notably the OX40 protein and CD317 which participate in immune signaling and regulation.

OX40L is implicated in autoimmune diseases such as multiple sclerosis and rheumatoid arthritis. The interaction between OX40L and OX40 increases T cell activation contributing to inflammation and disease progression. OX40L's excessive activity has links to these pathologies making it a potential therapeutic target. Another related protein within disease contexts is CD317 connected to immune modulation and control of viral infections and offering further opportunities for targeted treatment strategies involving OX40L.