CD2 Antibody (RPA-2.10)

Flow Cytometry: CD2 Antibody (RPA-2.10) [NBP2-25200] - CD3+ T-Cells isolated from PBMCs stained with anti-CD2 Alexa Fluor 488 (BL1). Image from a verified customer review.

Flow Cytometry: CD2 Antibody (RPA-2.10) [NBP2-25200] - Cell surface analysis of CD2 in 10^6 human lymphocytes using 0.25 ug of CD2 RPA-2.10 antibody; Shaded histogram represents cells without antibody; green represents isotype control ; red represents CD2 antibody. Goat anti-mouse IgG PE conjugated secondary was used in this test.

Flow Cytometry: CD2 Antibody (RPA-2.10) [NBP2-25200] - Analysis using the Alexa Fluor (R) 488 conjugate of NBP2-25200. Staining of CD2 in 10^6 human lymphocytes using 10 ul (0.25 ug) of this antibody. Shaded histogram represents cells without antibody; green represents isotype control ; red represents anti-CD2.

Flow Cytometry: CD2 Antibody (RPA-2.10) [NBP2-25200] - Analysis using the Allophycocyanin conjugate of NBP2-25200. Staining of normal human peripheral blood cells with Mouse IgG1 kappa Isotype Control APC (open histogram) or Anti-Human CD2 APC (filled histogram). Cells in the lymphocyte gate were used for analysis.

Flow Cytometry: CD2 Antibody (RPA-2.10) [NBP2-25200] - Analysis using the Biotin conjugate of NBP2-25200. Staining of normal human peripheral blood cells with 0.125 ug of Mouse IgG1 kappa Isotype Control Biotin (open histogram) or 0.125 ug of Anti-Human CD2 Biotin (filled histogram) followed by Streptavidin PE.

Flow Cytometry: CD2 Antibody (RPA-2.10) [NBP2-25200] - Analysis using the FITC conjugate of NBP2-25200. Staining of Human peripheral blood lymphocytes with RPA-2.10 FITC.

Flow Cytometry: CD2 Antibody (RPA-2.10) [NBP2-25200] - Analysis using the PE/Cy5 conjugate of NBP2-25200. Staining of normal human peripheral blood cells with Mouse IgG1 kappa Isotype Control PE-Cy5 (open histogram) or Anti-Human CD2 PE-Cy5 (filled histogram). Total cells were used for analysis.

• Reactivity: Hu
• Applications: WB, Flow, IHC, IHC-Fr, B/N
• Clone: RPA-2.10
• Clonality: Monoclonal
• Host: Mouse
• Conjugate: Unconjugated
• Concentration: 0.5 mg/ml

CD2 Antibody (RPA-2.10) Summary

• Additional Information: Clone RPA-2.10 was used by HLDA to establish CD designation.
• Immunogen: A recombinant protein was used as the immunogen for the CD2 antibody.
• Isotype: IgG1 Kappa
• Clonality: Monoclonal
• Host: Mouse
• Gene: CD2
• Purity: Protein G purified

Applications/Dilutions

• Dilutions:
  • Block/Neutralize
  • Flow Cytometry 0.1-0.25 ug per 1x10^6 cells
  • Immunohistochemistry 1:10-1:500
  • Immunohistochemistry-Frozen 1:10-1:500
  • Western Blot 1:100-1:2000
• Application Notes: Flow reported from a verified customer review.

Reactivity Notes

This product reacts with Human.

Packaging, Storage & Formulations

• Storage: Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.
• Buffer: CD2 RPA-2.10 antibody at 0.5 mg/ml in PBS containing 0.05% BSA
• Preservative: 0.05% Sodium Azide
• Concentration: 0.5 mg/ml
• Purity: Protein G purified

Alternate Names for CD2 Antibody (RPA-2.10)

• CD2 antigen (p50), sheep red blood cell receptor
• CD2 antigen
• CD2 molecule
• CD2
• Erythrocyte receptor
• FLJ46032
• LFA-2
• LFA-3 receptor
• lymphocyte-function antigen-2
• Rosette receptor
• SRBC
• T11
• T-cell surface antigen CD2
• T-cell surface antigen T11/Leu-5

Background

CD2, also known as sheep red blood cell receptor (SRBC-R), erythrocyte receptor, LFA-2, and T11, is a type I transmembrane glycoprotein that is expressed on the surface of T cells, natural killer (NK) cells, thymocytes, and dendritic cells (1,2). CD2 is a member of the immunoglobulin (Ig) superfamily and a costimulatory receptor that functions in formation of the immunological synapse and T cell activation and signaling (1). The human CD2 protein is 351 amino acids in length with a theoretical molecular weight of ~40 kDa, but a fully glycosylated protein can weight closer to 50 kDa (1,3). The CD2 protein contains a signal sequence, an extracellular domain (ECD) composed of an Ig-like V-type domain followed by an Ig-like C-type domain, a transmembrane helical domain, and a proline-rich cytoplasmic tail (1,3). CD2 binds with CD58, also called LFA-3, which is a surface glycoprotein expressed by antigen presenting cells (APCs) and other target cells (1,2). While CD58 is the primary ligand for CD2 in humans, it also interacts with CD59 and CD48, albeit with lower affinity (1,2). However, in mice and rats which lack CD58 the main ligand for CD2 is CD48 (4). Research has found that when there is no direct interaction, CD2 co-immunoprecipitates with the T cell receptor (TCR)/CD3 complex (1). CD2 is an adhesion molecule with a variety of functions including actin cytoskeleton rearrangement, immunological synapse formation through T cell-APC binding, thymocyte development and T cell activation, and NK cell activation (1,2). The immunological synapse forms upon T cell-APC engagement and creates a contact zone of supramolecule activation clusters (SMACs) where CD2-CD58 is part of the central SMAC (cSMAC) (2).

The CD2-CD58 interaction has been shown to play a role in anti-tumor immune response, where reduced CD58 signaling is associated with immune escape of tumor cells in various hematological and lymphoid malignancies, but restoration of the signal promotes an anti-tumor response (2,5). Additionally, following cytomegalovirus (CMV) infection, CD2's binding to upregulated CD58 on CMV-infected cells is crucial for the activation and function of adaptive NK cells in the anti-viral response (2). In contrast, in situations where there is an increase in T cell and NK cell activation, like various autoimmune disorders or following organ transplant, costimulatory blockade of CD2-CD58 may be a potential therapeutic treatment approach (1). Mouse and rat xenograft models have shown that blocking the CD2 using anti-CD2 monoclonal antibodies contributes to graft survival and protects against lymphocyte infiltration and inflammatory damage (2).

References

1. Binder C, Cvetkovski F, Sellberg F, et al. CD2 Immunobiology. Front Immunol. 2020;11:1090. https://doi.org/10.3389/fimmu.2020.01090

2. Zhang Y, Liu Q, Yang S, Liao Q. CD58 Immunobiology at a Glance. Front Immunol. 2021;12:705260. https://doi.org/10.3389/fimmu.2021.705260

3. Uniprot (P06729)

4. van der Merwe PA. A subtle role for CD2 in T cell antigen recognition. J Exp Med. 1999;190(10):1371-1374. https://doi.org/10.1084/jem.190.10.1371

5. Nishikori M, Kitawaki T, Tashima M, Shimazu Y, Mori M, et al. Diminished CD2 Expression in T cells Permits Tumor Immune Escape. J Clin Cell Immunol. 2016;7:406. https://doi.org/10.4172/2155-9899.1000406

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.

Review for CD2 Antibody (NBP2-25200) (1)

Average Rating: 5

(Based on 1 review)

We have 1 review tested in 1 species: Human.

reviewed by: Lindsey Johnson ICC Human 11/26/2021

Summary

• Application: Immunocytochemistry
• Sample Tested: T cells
• Species: Human
• Lot: RPA-2.10

Bioinformatics

• Gene Symbol: CD2