Mouse OX40 Ligand/TNFSF4 Antibody
Mouse OX40 Ligand/TNFSF4 Antibody Summary
Accession # P43488
Mouse OX40 Ligand/TNFSF4 Sandwich Immunoassay
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Preparation and Storage
- 12 months from date of receipt, -20 to -70 °C as supplied.
- 1 month, 2 to 8 °C under sterile conditions after reconstitution.
- 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: OX40 Ligand/TNFSF4
OX40 Ligand (OX40L), also known as gp34, is a type II transmembrane glycoprotein belonging to the TNF superfamily. Murine OX40L cDNA encodes a 198 amino acid (aa) protein comprised of a 28 aa N-terminal cytoplasmic domain, a 20 aa transmembrane segment, and a 150 aa C-terminal extracellular domain (1). Human and mouse OX40L share 46% sequence identity at the amino acid level (1). OX40L is expressed on activated antigen presenting cells such as B cells, macrophages, dendritic cells, and on endothelial cells at the site of inflammation. The receptor for OX40L is OX40 (CD134) which is expressed predominantly on activated CD4+ T cells. Expression of OX40 is transient following engagement of T cell receptors (2). Ligation of OX40L by OX40 stimulates proliferation and differentiation of activated B cells, and increases immunoglobulin secretion (3, 4). The expression of OX40L on B cells is up‑regulated by CD40 ligation (3). Engagement of the OX40‑OX40L system has co-stimulatory effects on T cells by stimulating the production of cytokines by T helper cells and increasing the survival of memory T cells (2, 5). Blocking of the OX40‑OX40L interaction in vitro inhibits co-stimulation resulting in decreased T cell proliferation and adhesion of T cells to endothelial cells. Inhibition of the OX40‑OX40L interaction in disease models has beneficial effects in acute graft-versus-host disease, inflammatory bowel disease and decreases the development of collagen-induced arthritis and experimental leishmaniasis (6).
- Baum, P.R. et al. (1994) EMBO J. 13:3992.
- Gramaglia, I. et al. (1999) J. Immunol. 161:6510.
- Stuber, E. et al. (1995) Immunity 2:507.
- Malstrom, V. et al. (2001) J. Immunol. 166:6972.
- Maxwell, J.R. et al. (2000) J. Immunol. 164:107.
- Weinberg, A.D. (2002) Trends Immunol. 23:102.
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