Recombinant Rat GITR Ligand/TNFSF18 (Catalog # 9735-GL)induces IL-8 secretion in HT1080 human fibrosarcoma cells transfected with ratGITR. The ED50 for this effect is 0.06-0.6 µg/mL.
Recombinant Rat GITR Ligand/TNFSF18 Protein, CF Summary
Details of Functionality
Measured by its ability to induce IL-8 secretion in HT1080 human fibrosarcoma cells transfected with rat GITR. The ED50 for this effect is 0.06-0.6 μg/mL in the presence of Mouse Anti-Hemagglutinin/HA Peptide Monoclonal Antibody (Catalog # MAB060).
Source
Mouse myeloma cell line, NS0-derived rat GITR Ligand/TNFSF18 protein Thr74-Ser200, with a N-terminal HA-tag
>85%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Endotoxin Note
<0.10 EU per 1 μg of the protein by the LAL method.
Applications/Dilutions
Dilutions
Bioactivity
Theoretical MW
16 kDa. Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
SDS-PAGE
19-22 kDa, reducing conditions
Publications
Read Publication using 9735-GL in the following applications:
12 months from date of receipt, ≤ -20 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
3 months, ≤ -20 °C under sterile conditions after reconstitution.
Buffer
Lyophilized from a 0.2 μm filtered solution in PBS.
Purity
>85%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Reconstitution Instructions
Reconstitute at 500 μg/mL in PBS.
Notes
This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.
Alternate Names for Recombinant Rat GITR Ligand/TNFSF18 Protein, CF
Activation-inducible TNF-related ligand
AITRL
AITRLMGC138237
GITR Ligand
GITRL
GITRLglucocorticoid-induced TNFR-related protein ligand
Glucocorticoid-induced TNF-related ligand
hGITRLGITR ligand
TL6AITR ligand
TNFSF18
tumor necrosis factor (ligand) superfamily, member 18
tumor necrosis factor ligand superfamily member 18
Background
GITR Ligand, also known as TNFSF18 and TL6, is an
approximately 30 kDa type II transmembrane glycoprotein in the TNF superfamily
(1). Rat GITR Ligand consists of a 20 amino acid (aa) cytoplasmic domain, a 21 aa transmembrane segment, and a 132 aa extracellular domain (ECD) (2-4).
Within the ECD, rat GITR Ligand shares 60.6% and 81.1% aa sequence identity
with human and mouse GITR Ligand, respectively. GITR Ligand is expressed on
antigen presenting cells, CD4-CD8- double negative thymic precursors, vascular
endothelial cells, neurons, and in the eye (4-11). Its expression is
transiently up-regulated by proinflammatory stimulation (5, 8, 11). The binding
of GITR Ligand to GITR on mouse CD25+ T reg cells permits the
reactivation of T cells from Treg-induced suppression, although this does not
appear to occur in humans (9, 12-14). GITR Ligand binding to GITR
additionally provides a co-stimulatory signal to activated CD4+ and
CD8+ T cells and NK cells (6, 15, 16). This interaction also induces
reverse signaling in GITR Ligand expressing dendritic cells to suppress
cellular activation through the same pathway induced by the immunosuppressant
dexamethasone (17). In the brain, GITR Ligand/GITR interactions enhance
NGF-mediated neurite outgrowth from sympathetic neurons (10).
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Kim, B.J. et al. (2004) Invest. Ophthalmol. Vis. Sci. 45:3170.
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