Recombinant Human OX40 Ligand/TNFSF4 Protein, CF

(3 citations)   
  • Purity
    >95%, by SDS-PAGE under reducing conditions and visualized by silver stain.
  • Endotoxin Level
    <1.0 EU per 1 μg of the protein by the LAL method.
  • Activity
    Measured by its ability to induce IL-8 secretion in HT1080 human fibrosarcoma cells transfected with human OX40/TNFRSF4. Muller, N. et al. (2008) FEBS J. 275:2296. The ED50 for this effect is typically 1-5 ng/mL. Measured by its binding ability in a functional ELISA. When Recombinant Human OX40/TNFRSF4 Fc Chimera (Catalog # 3388-OX) is immobilized at 10 ng/mL, the concentration of Recombinant Human OX40 Ligand/TNFSF4 that produces 50% optimal binding response is found to be approximately 0.5‑3 ng/mL.
  • Source
    Mouse myeloma cell line, NS0-derived
    MHHHHHHHHHH GGGSGGGSGGGS IEGR Human OX40 Ligand
    (Gln51-Leu183)
    Accession # Q6FGS4
    N-terminus C-terminus
  • Accession #
  • N-terminal Sequence
    Analysis
    Met
  • Predicted Molecular Mass
    18 kDa
  • SDS-PAGE
    28-34 kDa, reducing conditions
1054-OX
 
Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution Reconstitute at 100 μg/mL in sterile PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Data Images
Recombinant Human OX40 Ligand/TNFSF4 (Catalog # 1054-OX) induces IL-8 secretion in the HT1080 human fibrsarcoma cell line. The ED50 for this effect is 1-5 ng/mL.
1 μg/lane of Recombinant Human OX40 Ligand/TNFSF4 was resolved with SDS-PAGE under reducing (R) conditions and visualized by silver staining, showing bands at 28-34 kDa.
Background: OX40 Ligand/TNFSF4

OX40 Ligand (OX40L), also known as gp34, is a type II transmembrane glycoprotein belonging to the TNF superfamily. Human OX40L cDNA encodes a 183 amino acids (aa) polypeptide with an amino-terminal cytoplasmic domain (aa 1¬23) and a carboxy¬terminal extracellular domain (aa 51-183). It shares 46% aa sequence identity with the mouse counterpart. OX40L is expressed on the surface of activated B cells, T cells, dendritic cells and endothelial cells. Similarly to other TNF superfamily members, membrane-bound OX40 Ligand exists as a homotrimer. OX40L binds to OX40 (CD134), a member of the TNF receptor superfamily that is expressed predominantly on activated CD4+ T cells. OX40 Ligand is one of the co¬stimulatory molecules in the immune system that includes B7, CD40 Ligand, CD30 Ligand, CD27 Ligand and 4¬1BB Ligand. Because OX40 appears as a late activation-induced T cell surface antigen, it has been speculated that the major function of OX40-OX40L interaction is to transmit a late co-stimulatory signal to promote the survival and proliferation of activated CD4+ T cells and prolong the immune response. Engagement of OX40 on activated T cells in situ in tumors has been shown to augment immune responses and subsequent tumor regression.

  • References:
    1. Godfrey, W.R. et al. (1994) J. Exp. Med. 180:757
    2. Baum, P.R. et al. (1994) EMBO J. 13:3992.
    3. Al­Shamkhani, A. et al. (1997) J. Biol. Chem. 272:5275.
    4. Kjaergaard, J. et al. (2000) Cancer Res. 60:5514.
  • Entrez Gene IDs:
    7292 (Human); 22164 (Mouse); 89814 (Rat)
  • Alternate Names:
    CD134 ligand; CD134L; CD252 antigen; CD252; Glycoprotein Gp34; gp34; OX40 antigen ligand; OX40 Ligand; OX40L; OX-40L; OX4OL; TAX transcriptionally-activated glycoprotein 1; tax-transcriptionally activated glycoprotein 1 (34kD); tax-transcriptionally activated glycoprotein 1, 34kD; TNFSF4; tumor necrosis factor (ligand) superfamily, member 4; tumor necrosis factor ligand superfamily member 4; TXGP1
Related Research Areas
Citations:

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

3 Citations: Showing 1 - 3
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  1. Murine insulin growth factor-like (IGFL) and human IGFL1 proteins are induced in inflammatory skin conditions and bind to a novel tumor necrosis factor receptor family member, IGFLR1.
    Authors: Lobito AA, Ramani SR, Tom I, Bazan JF, Luis E, Fairbrother WJ, Ouyang W, Gonzalez LC
    J. Biol. Chem., 2011;286(21):18969-81.
    Species: Human
    Sample Type:
    Application: Surface Plasmon Resonance
  2. Mycobacterium bovis Bacillus Calmette-Guerin suppresses inflammatory Th2 responses by inducing functional alteration of TSLP-activated dendritic cells.
    Authors: Yokoi T, Amakawa R, Tanijiri T, Sugimoto H, Torii Y, Amuro H, Son Y, Tajima K, Liu YJ, Ito T, Fukuhara S
    Int. Immunol., 2008;20(10):1321-9.
    Species: Human
    Sample Type: Whole Cells
    Application: Bioassay
  3. Mapping the domains of CD134 as a functional receptor for feline immunodeficiency virus.
    Authors: Willett BJ, McMonagle EL, Bonci F, Pistello M, Hosie MJ
    J. Virol., 2006;80(15):7744-7.
    Species: Feline
    Sample Type: Whole Cells
    Application: Bioassay
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Recombinant Human OX40/TNFRSF4 Fc Chimera Protein, CF

Bind 3388-OX 1
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