Recombinant Mouse 4-1BB/TNFRSF9 Fc Chimera Protein, CF Summary
Details of Functionality |
Measured by its ability to block 4-1BBL-induced IL-2 secretion by mouse T cells. The ED50 for this effect is 0.3-1 µg/mL in the presence of 0.4 µg/mL of recombinant mouse 4-1BBL. Measured by its ability to bind recombinant mouse 4-1BB Ligand in a functional ELISA. |
Source |
Mouse myeloma cell line, NS0-derived mouse 4-1BB/TNFRSF9/CD137 protein
Mouse 4-1BB (Val24-Leu187) Accession # P20334 |
DIEGRMD |
Human IgG1 (Pro100-Lys330) |
N-terminus |
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C-terminus |
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Accession # |
|
N-terminal Sequence |
Val24 |
Structure / Form |
Disulfide-linked homodimer |
Protein/Peptide Type |
Recombinant Proteins |
Gene |
Tnfrsf9 |
Purity |
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain |
Endotoxin Note |
<0.10 EU per 1 μg of the protein by the LAL method. |
Applications/Dilutions
Dilutions |
- Binding Activity
- Bioactivity
|
Theoretical MW |
44.3 kDa (monomer). 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 |
62-66 kDa, reducing conditions |
Reviewed Applications |
Read 1 Review rated 5 using 937-4B in the following applications:
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Publications |
Read Publications using 937-4B in the following applications:
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Packaging, Storage & Formulations
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.
|
Buffer |
Lyophilized from a 0.2 μm filtered solution in PBS. |
Purity |
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain |
Reconstitution Instructions |
Reconstitute at 100 μg/mL in sterile PBS. |
Notes
This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.
Alternate Names for Recombinant Mouse 4-1BB/TNFRSF9 Fc Chimera Protein, CF
Background
4-1BB, also known as CD137 and TNFRSF9, is an approximately 30 kDa transmembrane glycoprotein in the TNF receptor superfamily. 4-1BB functions in the development and activation of multiple immune cells (1). Mature mouse 4-1BB consists of a 164 amino acid (aa) extracellular domain (ECD) with four TNFR cysteine‑rich repeats, a 21 aa transmembrane segment, and a 48 aa cytoplasmic domain (2). Within the ECD, mouse 4-1BB shares 60% and 79% aa sequence identity with human and rat 4-1BB, respectively. 4-1BB is expressed as a disulfide-linked homodimer on various populations of activated T cells including CD4
+, CD8
+, memory CD8
+, NKT, and regulatory T cells (3-6) as well as on myeloid and mast cell progenitors, dendritic cells, mast cells, and bacterially infected osteoblasts (7-10). It binds with high affinity to the transmembrane 4-1BB Ligand/TNFSF9 which is expressed on antigen presenting cells and myeloid progenitor cells (7, 11). This interaction co‑stimulates the proliferation, activation, and/or survival of the 4-1BB expressing cell (3-6, 11). It can also enhance the activation-induced cell death of repetitively stimulated T cells (11). Mice lacking 4-1BB show augmented T cell activation, perhaps due to its absence on regulatory T cells (12). 4-1BB can associate with OX40 on activated T cells, forming a complex that responds to either ligand and inhibits Treg and CD8
+ T cell proliferation (13). Reverse signaling through 4-1BB Ligand inhibits the development of dendritic cells, B cells, and osteoclasts (7, 10) but supports mature dendritic cell survival and co‑stimulates the proliferation and activation of mast cells (8, 9). 4‑1BB activation enhances CD8
+ T cell and NK cell mediated anti-tumor immunity (14). It also contributes to the development of inflammation in high fat diet-induced metabolic syndrome (15). Soluble forms of 4-1BB and 4-1BB Ligand circulate at elevated levels in the serum of rheumatoid arthritis and hematologic cancer patients, respectively (16, 17).
- Kwon, B.S. and S.M. Weissman (1989) Proc. Natl. Acad. Sci. USA 86:1963.
- Wen, T. et al. (2002) J. Immunol. 168:4897.
- Pulle, G. et al. (2006) J. Immunol. 176:2739.
- Zheng, G. et al. (2004) J. Immunol. 173:2428.
- Kim, D. et al. (2008) J. Immunol. 180:2062.
- Lee, S. et al. (2008) Nat. Immunol. 9:917.
- Choi, B.K. et al. (2009) J. Immunol. 182:4107.
- Nishimoto, H. et al. (2005) Blood 106:4241.
- Saito, K. et al. (2004) J. Biol. Chem. 279:13555.
- Alderson, M.R. et al. (1994) Eur. J. Immunol. 24:2219.
- Lee, S. et al. (2005) J. Immunol. 174:6803.
- Ma, B.Y. et al. (2005) Blood 106:2002.
- Choi, B.K. et al. (2010) J. Immunol. 185:1404.
- Kim, C. et al. (2011) Diabetes 60:3159.
- Michel, J. et al. (1998) Eur. J. Immunol. 28:290.
- Salih, H.R. et al. (2001) J. Immunol. 167:4059.
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