Human LRRC32/GARP Alexa Fluor® 700-conjugated Antibody

Catalog # Availability Size / Price Qty
FAB6055N-100UG

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Human LRRC32/GARP Alexa Fluor® 700-conjugated Antibody Summary

Species Reactivity
Human
Specificity
Detects human LRRC32/GARP in ELISAs. In direct ELISAs, no cross-reactivity with recombinant mouse LRRC32 is observed.
Source
Monoclonal Rat IgG2a Clone # 855151
Immunogen
recombinant human LRRC32/GARP
Accession # Q14392
Formulation
Supplied 0.2 mg/mL in a saline solution containing BSA and Sodium Azide.
Label
Alexa Fluor 700 (Excitation= 675-700 nm, Emission= 723 nm)

Applications

Recommended Concentration
Sample
Flow Cytometry
0.25-1 µg/106 cells
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)

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

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Preparation and Storage

Shipping
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Store the unopened product at 2 - 8 °C. Do not use past expiration date.

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
Entrez Gene IDs
2615 (Human); 434215 (Mouse)
Alternate Names
D11S833E; D11S833Eleucine-rich repeat-containing protein 32; GARP; GARPGarpin; Garpin; Glycoprotein A repetitions predominantgarpin; leucine rich repeat containing 32; LRRC32

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Product Specific Notices


This product is provided under an agreement between Life Technologies Corporation and R&D Systems, Inc, and the manufacture, use, sale or import of this product is subject to one or more US patents and corresponding non-US equivalents, owned by Life Technologies Corporation and its affiliates. The purchase of this product conveys to the buyer the non-transferable right to use the purchased amount of the product and components of the product only in research conducted by the buyer (whether the buyer is an academic or for-profit entity). The sale of this product is expressly conditioned on the buyer not using the product or its components (1) in manufacturing; (2) to provide a service, information, or data to an unaffiliated third party for payment; (3) for therapeutic, diagnostic or prophylactic purposes; (4) to resell, sell, or otherwise transfer this product or its components to any third party, or for any other commercial purpose. Life Technologies Corporation will not assert a claim against the buyer of the infringement of the above patents based on the manufacture, use or sale of a commercial product developed in research by the buyer in which this product or its components was employed, provided that neither this product nor any of its components was used in the manufacture of such product. For information on purchasing a license to this product for purposes other than research, contact Life Technologies Corporation, Cell Analysis Business Unit, Business Development, 29851 Willow Creek Road, Eugene, OR 97402, Tel: (541) 465-8300. Fax: (541) 335-0354.

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