HMC-1 cell line was established from a patient with mast cell leukemia. HMC-1 cells are widely used in studies of human mast cell function because they exhibit many key characteristics of tissue mast cells, such as expression of histamine, tryptase, heparin and similar cell surface antigen-profile (1,2). Receptor tyrosine kinase KIT is expressed on mast cells and plays an important role in the proliferation, function and survival of mast cells. Activating mutations in KIT have been linked to dysregulated growth of mast cells and are associated with mast cell tumors and systemic mastocytosis. Two activating point mutations in KIT have been reported in the HMC-1 cell line (3). Both mutations convert the receptor to a constitutively tyrosine phosphorylated and active state, leading to growth factor-independent proliferation.
1. Nilsson, G, et al. (1994) Phenotypic Characterization of the Human Mast-Cell Line HMC-1. Scand. J. Immunol 39: 489-498.
2. Sundstrom, M, et al. (2003) Functional and phenotypic studies of two variants of a human mast cell line with a distinct set of mutations in the c-kit proto-oncogene. Immunology 108: 89-97.
3. Furitsu, T, et al. (1993) Identification of mutations in the coding sequence of the proto-oncogene c-kit in a human mast cell leukemia cell line causing ligand-independent activation of c-kit product. J. Clin. Invest. 92(4): 1736-4.
HMC-1.1 (HMC-1(560)) and HMC-1.2 (HMC-1(560,816)) are two variant sublines of the HMC-1 cell line (2). HMC-1.1 possess the V560G mutation, but not the D816V mutation. HMC-1.2 possess both the V560G and D816V mutations and exhibits a higher proliferative rate than HMC-1.1. It has been suggested that the higher proliferative potential of HMC-1.2 may be attributed to the D816V mutation.
Cell Line Description
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Inflammation & Immunology
• Each vial contains ≥ 1X106 viable cells.
• Cells are tested by PCR and are negative for HPV-16, HPV-18, Hepatitis A, B, C and HIV-1 & 2 viruses.
• Cells are negative for mycoplasma contamination.
• Each lot of cells are genotyped by STR analysis to verify the unique identity of the cell line.
Storage and Stability
Store in liquid nitrogen. The cells can be cultured for at least 10 passages after initial thawing without significantly affecting the cell marker expression and functionality.
Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.