4-1BB/TNFRSF9/CD137 Antibody (4B4-1) - Low Endotoxin, Azide and BSA Free

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Flow Cytometry: 4-1BB/TNFRSF9/CD137 Antibody (4B4-1) - Low Endotoxin, Azide and BSA Free [NBP3-09103] - Separation of cells stained using anti-humam CD137 (4B4-1) purified antibody (low endotoxin, concentration in ...read more
Flow Cytometry: 4-1BB/TNFRSF9/CD137 Antibody (4B4-1) - Low Endotoxin, Azide and BSA Free [NBP3-09103] - Surface staining pattern of human PHA stimulated peripheral blood mononuclear cell suspension stained using ...read more

Product Details

Summary
Reactivity Hu, PmSpecies Glossary
Applications ELISA, Flow, Func, IP
Clone
4B4-1
Clonality
Monoclonal
Host
Mouse
Conjugate
Unconjugated
Format
Low Endotoxin, Azide and BSA Free
Concentration
1 mg/ml

Order Details

4-1BB/TNFRSF9/CD137 Antibody (4B4-1) - Low Endotoxin, Azide and BSA Free Summary

Additional Information
Clone 4B4-1 was used by HLDA to establish CD designation.
Immunogen
Recombinant human 4-1BB/TNFRSF9/CD137 ectodomain
Specificity
The mouse monoclonal antibody 4B4-1 recognizes an extracellular conformational epitope on CD137, an approximately 40 kDa type I transmembrane protein of the TNFR family expressed mainly on activated T cells.
Isotype
IgG1 Kappa
Clonality
Monoclonal
Host
Mouse
Gene
TNFRSF9
Purity
Protein A purified
Endotoxin Note
Endotoxin level is less than 0.01 EU/ug of the protein, as determined by the LAL test.
Innovator's Reward
Test in a species/application not listed above to receive a full credit towards a future purchase.

Applications/Dilutions

Dilutions
  • ELISA
  • Flow Cytometry 1-4 ug/ml
  • Functional
  • Immunoprecipitation

Packaging, Storage & Formulations

Storage
Store at 4C. Do not freeze.
Buffer
PBS, 0.2 um filter sterilized
Preservative
No Preservative
Concentration
1 mg/ml
Purity
Protein A purified

Alternate Names for 4-1BB/TNFRSF9/CD137 Antibody (4B4-1) - Low Endotoxin, Azide and BSA Free

  • 4-1BB ligand receptor
  • 41BB
  • 4-1BB
  • CD137 antigen
  • CD137
  • CD137MGC2172
  • CDw137
  • FLJ43501
  • ILA
  • ILAhomolog of mouse 4-1BB
  • induced by lymphocyte activation (ILA)
  • interleukin-activated receptor, homolog of mouse Ly63
  • receptor protein 4-1BB
  • T cell antigen ILA
  • T-cell antigen 4-1BB homolog
  • T-cell antigen ILA
  • TNFRSF9
  • tumor necrosis factor receptor superfamily member 9
  • tumor necrosis factor receptor superfamily, member 9

Background

4-1BB, also called CD137 and tumor necrosis factor receptor superfamily member 9 (TNFRSF9), is a type I surface glycoprotein expressed on activated T cell and natural killer (NK) cells (1,2). Human 4-1BB protein is 255 amino acids (aa) in length with a theoretical molecular weight of 28 kDa. It contains an extracellular domain, a helical transmembrane domain, and a cytoplasmic/intracellular domain (3). 4-1BB/TNFRSF9/CD137 is a costimulatory receptor that binds the ligand 4-1BBL/CD137L which is primarily expressed on antigen presenting cells (APCs) such as dendritic cells (DCs), macrophages, and B cells (1,2,4,5). The 4-1BB receptor-ligand interaction results in recruitment of TNFR-associated factor (TRAF) family adaptor proteins to 4-1BB's cytoplasmic domain (1,2,4,5). TRAF1, TRAF2, and TRAF3 are found in various homodimer and/or heterodimer configurations. Their recruitment to 4-1BB/CD137 initiates signalosome formation as well as activation of the nuclear factor-kappa B (NF-kappaB) and mitogen-activated protein kinase (MAPK) signaling cascade (1,4,5). 4-1BB/TNFRSF9/CD137 stimulation leads to increased cellular cytotoxic activity and pro-inflammatory cytokine production (1,2,4). Given its role in immune cell activation, 4-1BB has become a promising target for cancer immunotherapy (1,2,4). Current approaches to target 4-1BB include agonistic monoclonal and bispecific anti-4-1BB antibodies and well as utilizing the cytoplasmic domain of 4-1BB in generating chimeric antigen receptors (CARs) (1,2,4). 4-1BB agonists in clinical trials include Urelumab and Utolimumab. Utolimumab also has ligand blocking properties whereas Urelumab does not (1,2,4). Anti-4-1BB monoclonal antibodies are being tested as monotherapy as well as combination therapy with either other immunostimulatory monoclonal antibodies or with checkpoint blockade antibodies like anti-PD-1 (1,2,4).

References

1. Etxeberria, I., Glez-Vaz, J., Teijeira, A., & Melero, I. (2020). New emerging targets in cancer immunotherapy: CD137/4-1BB costimulatory axis. ESMO open, 4(Suppl 3), e000733. https://doi.org/10.1136/esmoopen-2020-000733

2. Chester, C., Sanmamed, M. F., Wang, J., & Melero, I. (2018). Immunotherapy targeting 4-1BB: mechanistic rationale, clinical results, and future strategies. Blood, 131(1), 49-57. https://doi.org/10.1182/blood-2017-06-741041

3. Uniport (Q07011)

4. Chester, C., Ambulkar, S., & Kohrt, H. E. (2016). 4-1BB agonism: adding the accelerator to cancer immunotherapy. Cancer Immunology, Immunotherapy: CII, 65(10), 1243-1248. https://doi.org/10.1007/s00262-016-1829-2

5. Zapata, J. M., Perez-Chacon, G., Carr-Baena, P., Martinez-Forero, I., Azpilikueta, A., Otano, I., & Melero, I. (2018). CD137 (4-1BB) signalosome: complexity is a matter of TRAFs. Frontiers in Immunology, 9, 2618. https://doi.org/10.3389/fimmu.2018.02618

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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Bioinformatics

Gene Symbol TNFRSF9