Human LRRC32/GARP Antibody (855151)

R&D Systems | Catalog # MAB6055

R&D Systems
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Key Product Details

Species Reactivity

Validated:

Human

Cited:

Human

Applications

Validated:

Flow Cytometry, CyTOF-ready

Cited:

Neutralization

Label

Unconjugated

Antibody Source

Monoclonal Rat IgG2A Clone # 855151
View all LRRC32/GARP Primary Antibodies »

Product Specifications

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.

Clonality

Monoclonal

Host

Rat

Isotype

IgG2A

Scientific Data Images for Human LRRC32/GARP Antibody (855151)

Detection of LRRC32/GARP antibody in Human PBMCs stimulated to induce Tregs antibody by Flow Cytometry.

Detection of LRRC32/GARP in Human PBMCs stimulated to induce Tregs by Flow Cytometry.

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 IgG1Isotype Control (Catalog # MAB005) followed by Phycoerythrin-conjugated Anti-Rat IgG Secondary Antibody (Catalog # F0105B).

Applications for Human LRRC32/GARP Antibody (855151)

Application
Recommended Usage

CyTOF-ready

Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.

Flow Cytometry

2.5 µg/106 cells
Sample: Human peripheral blood mononuclear cells (PBMCs) stimulated to induce Regulatory T Cells (Tregs) with Anti-CD3, Anti-CD28, Recombinant Human TGF‑ beta 1 (Catalog # 240-B), and Recombinant Human IL‑2 (Catalog # 202-IL)

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Flow Cytometry

Formulation, Preparation, and Storage

Purification

Protein A or G purified from hybridoma culture supernatant

Reconstitution

Sterile PBS to a final concentration of 0.5 mg/mL. For liquid material, refer to CoA for concentration.

Formulation

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.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.

Stability & 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.

Calculators

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Background: LRRC32/GARP

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).

References

  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.

Long Name

Leucine-rich Repeat Containing 32/Glycoprotein A Repetitions Predominant

Alternate Names

D11S833E, GARP, Garpin

Entrez Gene IDs

2615 (Human); 434215 (Mouse)

Gene Symbol

LRRC32

UniProt

Q14392

Additional LRRC32/GARP Products

Product Documents for Human LRRC32/GARP Antibody (855151)

Certificate of Analysis

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Product Specific Notices for Human LRRC32/GARP Antibody (855151)

For research use only

Related Research Areas

Regulatory T Cells (Tregs)

Citations for Human LRRC32/GARP Antibody (855151)

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