Anti-GCSF Receptor/CSF3R Antibody Picoband® Fluoro550 Conjugated

CSF3R (Colony-Stimulating Factor 3 Receptor, Granulocyte) also known as GCSFR or CD114 ((Cluster of Differentiation 114) is a protein that in humans is encoded by the CSF3R gene. G-CSF-R is a cell-surface receptor for the granulocyte colony-stimulating factor (G-CSF) . The G-CSF receptors belongs to a family of cytokine receptors known as the hematopoietin receptor family. The CSF3R gene consists of 17 exons. By in situ hybridization using human CSF3R cDNA as a probe, Inazawa et al. (1991) localized the gene to 1p35-p34.3. The G-CSF-R is a transmembrane receptor that consists of an extracellular ligand-binding portion, a transmembrane domain, and the cytoplasmic portion that is responsible for signal transduction. GCSF-R ligand-binding is associated with dimerization of the receptor and signal transduction through proteins including Jak, Lyn, STAT, and Erk1/2. Dong et al. (2001) reported that the C terminus of CSF3R is required for SHP1 downregulation of CSF3-induced STAT activation. The authors proposed that this mechanism inhibits cell proliferation and survival in response to CSF3.

One or several isoforms have been found in myelogenous leukemia cell line KG-1, leukemia U-937 cell line, in bone marrow cells, placenta, and peripheral blood granulocytes. Isoform GCSFR-2 is found only in leukemia U-937 cells. Isoform GCSFR-3 is highly expressed in placenta.

Receptor for granulocyte colony-stimulating factor (CSF3), essential for granulocytic maturation. Plays a crucial role in the proliferation, differientation and survival of cells along the neutrophilic lineage. In addition it may function in some adhesion or recognition events at the cell surface. .

1. Dong, F., Qiu, Y., Yi, T., Touw, I. P., Larner, A. C. The carboxyl terminus of the granulocyte colony-stimulating factor receptor, truncated in patients with severe congenital neutropenia/acute myeloid leukemia, is required for SH2-containing phosphatase-1 suppression of Stat activation. J. Immun. 167: 6447-6452, 2001. 2. Inazawa, J., Fukunaga, R., Seto, Y., Nakagawa, H., Misawa, S., Abe, T., Nagata, S. Assignment of the human granulocyte colony-stimulating factor receptor gene (CSF3R) to chromosome 1 at region p35-p34.3. Genomics 10: 1075-1078, 1991. 3. Plo, I., Zhang, Y., Le Couedic, J.-P., Nakatake, M., Boulet, J.-M., Itaya, M., Smith, S. O., Debili, N., Constantinescu, S. N., Vainchenker, W., Louache, F., de Botton, S. An activating mutation in the CSF3R gene induces a hereditary chronic neutrophilia. J. Exp. Med. 206: 1701-1707, 2009.