Anti-Human CD64 (FCGR1) – Purified in vivo PLATINUM™ Functional Grade

Mouse IgG1 PLATINUM, Clone hksp OR Mouse IgG1 PLATINUM, Clone hksp84

Rheumatoid synovial fluid cells and fibronectin purified human monocytes.

This monoclonal antibody is aseptically packaged and formulated in 0.01 M phosphate buffered saline (150 mM NaCl) PBS pH 7.2 - 7.4 with no carrier protein, potassium, calcium or preservatives added. Due to inherent biochemical properties of antibodies, certain products may be prone to precipitation over time. Precipitation may be removed by aseptic centrifugation and/or filtration.

Functional grade preclinical antibodies are manufactured in an animal free facility using in vitro cell culture techniques and are purified by a multi-step process including the use of protein A or G to assure extremely low levels of endotoxins, leachable protein A or aggregates.

Functional grade preclinical antibodies may be stored sterile as received at 2-8°C for up to one month. For longer term storage, aseptically aliquot in working volumes without diluting and store at ≤ -70°C. Avoid Repeated Freeze Thaw Cycles.

Next Day 2-8°C

Clone 10.1 recognizes the alpha subunit of human FCGR1.

FCGR1 antibody, 10.1, recognizes high-affinity immunoglobulin gamma Fc receptor I (FCGR1), also known as CD64. FCGR1 is a 72 kDa type I transmembrane glycoprotein expressed on monocytes, macrophages, and dendritic cells (DCs). FCGR1 can also be induced on neutrophils with IFNγ and G-CSF¹. FCGR1 binds with high affinity to monomeric IgG1 and IgG3, and to a lesser extent, IgG4², resulting in phosphorylation of the intracellular FCGR1 ITAM motif and subsequent recruitment of Syk. FCGR1 contributes to inflammation via several mechanisms, including promoting antibody-dependent cell-mediated cytotoxicity (ADCC), clearance of immune complexes, cytokine production, and antigen presentation^1,3. CD64-based targeted therapies eliminate M1 pro-inflammatory macrophages and show clinical potential for the treatment of macrophage-mediated chronic inflammatory diseases, such as chronic cutaneous inflammation and rheumatoid arthritis⁴. In addition, CD64 promotes antitumor responses and mediates cytotoxic killing of tumor cells by macrophages⁵.

FCGR1 is expressed on monocytes, macrophages, dendritic cells (DCs), and activated granulocytes.

IgG receptor

1. Hulett MD & Hogarth PM. (1998) Mol Immunol. 35(14-15):989-96
2. M. Daëron., et al. (2009) Blood. 113: 3716–3725
3. Alter G., et al. (2011) Epub. 415(2):160-7
4. Barth S., et al. (2017) Biomedicines. 5(3):56
5. Keler T., et al. (1998) Clin Cancer Res. 4(9):2237-43