LRRC32/GARP Antibody (855151) [Unconjugated]

Human peripheral blood mononuclear cells (PBMCs) stimulated to induce Regulatory T Cells (Tregs) with 10 μg/mL Anti-CD3, 5 μg/mL Anti-CD28, 10 ng/mL Recombinant Human TGF‑ beta 1 (Catalog # 240-B), and 20 ng/mLRecombinant Human IL‑2 (Catalog # 202-IL) for 48 hours were stained with Mouse Anti-Human/Mouse LAP TGF‑ beta 1 APC-conjugated Monoclonal Antibody (Catalog # FAB2463A) and either (A) Mouse Anti-Human LRRC32/GARP Monoclonal Antibody (Catalog # MAB6055) or (B) Rat IgG1 Isotype Control (Catalog # MAB005) followed by Phycoerythrin-conjugated Anti-Rat IgG Secondary Antibody (Catalog # F0105B).

• Reactivity: Hu
• Applications: Flow, CyTOF-ready
• Clone: 855151
• Clonality: Monoclonal
• Host: Rat
• Conjugate: Unconjugated
• Concentration: LYOPH

LRRC32/GARP Antibody (855151) [Unconjugated] Summary

• Immunogen: recombinant human LRRC32/GARP
  Accession # Q14392
• Specificity: Detects human LRRC32/GARP in ELISAs. In direct ELISAs, no cross-reactivity with recombinant mouse LRRC32 is observed.
• Source: N/A
• Isotype: IgG2a
• Clonality: Monoclonal
• Host: Rat
• Gene: LRRC32
• Purity Statement: Protein A or G purified from hybridoma culture supernatant

Applications/Dilutions

• Dilutions:
  • CyTOF-ready
  • Flow Cytometry 2.5 ug/10^6 cells

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.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.
• Buffer: Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
• Preservative: No Preservative
• Concentration: LYOPH
• Reconstitution Instructions: Sterile PBS to a final concentration of 0.5 mg/mL.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for LRRC32/GARP Antibody (855151) [Unconjugated]

• D11S833E
• D11S833Eleucine-rich repeat-containing protein 32
• GARP
• GARPGarpin
• Garpin
• Glycoprotein A repetitions predominantgarpin
• leucine rich repeat containing 32
• LRRC32

Background

Leucine-rich repeat protein 32 (LRRC32), also known as GARP (glycoprotein A repetitions predominant), is an 80 kDa type I transmembrane glycoprotein (1). Mature human LRRC32 consists of a 608 amino acid (aa) extracellular domain (ECD) that contains 22 leucine‑rich repeats, a 21 aa transmembrane segment, and a 14 aa cytoplasmic domain (2, 3). Within the ECD, human LRRC32 shares approximately 80% aa sequence identity with mouse and rat LRRC32. LRRC32 is widely expressed during embryogenesis and on adult platelets (4, 5). Human LRRC32 is identified as a lineage specific key receptor for human T cells. It is selectively expressed on activated FOXP3⁺ regulatory T cells (Treg) (6‑10). LRRC32 expression promotes the acquisition of a Treg phenotype including reduced cellular proliferation, reduced cytokine secretion, and the capacity to suppress the proliferation of naïve T cells (6‑8). LRRC32 binds directly to the TGF-beta latency associated peptide (LAP) and tethers latent TGF-beta on the surface of activated Treg cells (9, 10). The presentation of TGF-beta on Tregs contributes to their ability to suppress naïve T cell proliferation (11).

1. Battaglia, M. and M.G. Roncarolo (2009) Eur. J. Immunol. 39:3296.
2. Ollendorff, V. et al. (1994) Cell Growth Differ. 5:213.
3. Bella, J. et al. (2008) Cell Mol Life Sci. 65:2307.
4. Roubin, R. et al. (1996) Int. J. Dev. Biol. 40:545.
5. Macaulay, I.C. et al. (2007) Blood 109:3260.
6. Wang, R. et al. (2008) PloS ONE 3:e2705.
7. Wang, R. et al. (2009) Proc. Natl. Acad. Sci. 106:13439.
8. Probst-Kepper, M. et al. (2009) J. Cell. Mol. Med. 13:3343.
9. Tran, D.Q. et al. (2009) Proc. Natl. Acad. Sci. 106:13445.
10. Stockis, J. et al. (2009) Eur. J. Immunol. 39:3315.
11. Vignali, D.A. et al. (2008) Nat. Rev. Immunol. 8:523.

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.

Publications for LRRC32/GARP Antibody (MAB6055)(1)

Publication using MAB6055

• M Zhang, TO Robinson, A Duverger, O Kutsch, SL Heath, RQ Cron Regulatory CD4 T cells inhibit HIV-1 expression of other CD4 T cell subsets via interactions with cell surface regulatory proteins Virology, 2018-01-08;516(0):21-29. 2018-01-08 [PMID: 29324358] (Neutralization, Human)

Bioinformatics

• Gene Symbol: LRRC32
• Uniprot:
  • Q14392()