Detects human 4‑1BB Ligand/TNFSF9 in direct ELISAs and Western blots. In direct ELISAs and Western blots, less than 1% cross-reactivity with recombinant mouse 4-1BB Ligand, recombinant human (rh) APRIL, rhBAFF, rhEDA-A2, rhFas Ligand, rhGITR Ligand, rhLIGHT, rhOX40 Ligand, rhTNF-alpha, rhTRAIL, and rhTWEAK is observed.
Polyclonal Goat IgG
E. coli-derived recombinant human 4‑1BB Ligand/TNFSF9 Arg71-Glu254 Accession # P41273
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
Detection of Human 4‑1BB Ligand/TNFSF9 by Western Blot.
Western blot shows lysates of human placenta tissue. PVDF membrane was probed with 1 µg/mL of Goat Anti-Human 4‑1BB Ligand/TNFSF9 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF2295) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF017). A specific band was detected for 4‑1BB Ligand/TNFSF9 at approximately 26 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
4‑1BB Ligand/TNFSF9 in Human Placenta.
4‑1BB Ligand/TNFSF9 was detected in immersion fixed paraffin-embedded sections of human placenta using Goat Anti-Human 4‑1BB Ligand/TNFSF9 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF2295) at 1 µg/mL for 1 hour at room temperature followed by incubation with the Anti-Goat IgG VisUCyte™ HRP Polymer Antibody (Catalog # VC004). Tissue was stained using DAB (brown) and counterstained with hematoxylin (blue). Specific staining was localized to syncytiotrophoblasts. View our protocol for IHC Staining with VisUCyte HRP Polymer Detection Reagents.
Preparation and Storage
Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
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.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: 4-1BB Ligand/TNFSF9
4-1BB ligand (4-1BBL; also CD137L) is a 32 kDa type II transmembrane protein that belongs to the TNF superfamily (TNFSF) molecules (1‑4). The human 4-1BBL cDNA encodes a 254 amino acid (aa) protein that contains a 25 aa N-terminal cytoplasmic domain, a 23 aa transmembrane segment, and a 206 aa C-terminal extracellular region (5). The extracellular domain (ECD) of 4-1BBL has a jelly-roll, beta -sandwich tertiary structure that is similar to other TNFSF members. There is only one cysteine in the human ECD, and no potential N-linked glycosylation sites. The potential exists, however, for O-linked glycosylation. The human 4-1BBL ECD shares 32% and 35% aa identity with mouse and rat ECD, respectively. In the cytoplasmic domain, human 4-1BBL is 55 aa shorter than the equivalent region in rodents. 4-1BBL is expressed by activated B cells, macrophages, dendritic cells, activated T cells, neurons and astrocytes (2, 3, 6). A 26 kDa soluble form of 4-1BBL is known to occur in humans. Although it is presumably generated by MMP activity, its amino acid size is currently unreported (4). The soluble form is bioactive. Human 4-1BBL signals through both CD137/4-1BB and itself. Its cytoplasmic tail participates in reverse signaling that induces apoptosis in T cells and cytokine secretion (IL-6; TNF-alpha ) by monocytes (7, 8). 4-1BBL binding to CD137/4-1BB produces a number of effects. It seems to play a key role in the T cell recall response. It maintains T cell numbers at the end of a primary response, and induces CD4+ and CD8+ T cells to proliferate and secrete cytokines such as IL-2 and IFN-gamma in CD4+ cells, and IFN-gamma in CD8+ cells (9, 10).
Kwon, B. et al. (2003) Exp. Mol. Med. 35:8.
Salih, H.R. et al. (2002) Int. J. Clin. Pharmacol. Ther. 40:348.
Vinay, D.S. and B.S. Kwon (1998) Semin. Immunol. 1:481.
Salih, H.R. et al. (2001) J. Immunol. 167:4059.
Alderson, M.R. et al. (1994) Eur. J. Immunol. 24:2219.
Reali, C. et al. (2003) J. Neurosci. Res. 74:67.
Michel, J. et al. (1999) Immunology 98:42.
Langstein, J. et al. (1998) J. Immunol. 160:2488.
Wen, T. et al. (2002) J. Immunol. 168:4897.
Dawicki, W. and T.H. Watts (2004) Eur. J. Immunol. 34:743.
Entrez Gene IDs:
8744 (Human); 21950 (Mouse); 353218 (Rat)
41BB Ligand; 4-1BB Ligand; 4-1BBL; 4-1BB-L; CD137L; homolog of mouse 4-1BB-L; receptor 4-1BB ligand; TNFSF9; tumor necrosis factor (ligand) superfamily, member 9; tumor necrosis factor ligand superfamily member 9
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.
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