HMy2.CIR Cells








General information
Description | The HMy2.CIR cell line was developed through gamma irradiation and subsequent selection for the loss of HLA class I antigen expression from the HMy.2 B lymphoblastoid cell line. This parental cell line is a fast-growing mutant derived from the ARH-77 cell line. HMy2.CIR cells are particularly valuable as hosts for transfected class I major histocompatibility antigen genes, offering a versatile platform for studying antigen presentation and immune response mechanisms. The ARH-77 cell line, from which HMy2.CIR is ultimately derived, is known to be positive for Epstein-Barr nuclear antigen (EBNA+) and Epstein-Barr viral capsid antigen (EBVCA+). Consequently, the HMy2.CIR cell line is also presumed to be EBNA positive. This cell line is characterized by its expression of small amounts of HLA Cw4, but it does not express HLA A or B locus products. This unique antigen expression profile makes HMy2.CIR cells a useful model for immunological research, particularly in the study of HLA class I-restricted antigen processing and presentation. |
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Organism | Human |
Tissue | B-Lymphoblast |
Synonyms | Hmy.2 CIR, HMy2.CIR, C1R |
Characteristics
Age | 33 years |
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Gender | Female |
Ethnicity | Caucasian |
Morphology | Lymphoblast |
Growth properties | Suspension |
Identifiers / Biosafety / Citation
Citation | HMy2.CIR (Cytion catalog number 305126) |
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Biosafety level | 2 |
Expression / Mutation
Handling
Culture Medium | IMDM, w: 4.5 g/L Glucose, w: 4 mM L-Glutamine, w: 25 mM HEPES, w: 1.0 mM Sodium pyruvate, w: 3.024 g/L NaHCO3 (Cytion article number 820800a) |
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Medium supplements | Supplement the medium with 10% FBS |
Subculturing | Gently homogenize the cell suspension in the flask by pipetting up and down, then take a representative sample to determine the cell density per ml. Dilute the suspension to achieve a cell concentration of 1 x 10^5 cells/ml with fresh culture medium, and aliquot the adjusted suspension into new flasks for further cultivation. |
Split ratio | 1×10^5 to 1×10^6 cells/mL |
Fluid renewal | 2 to 3 times per week |
Freeze medium | As a cryopreservation medium, use complete growth medium (including FBS) + 10% DMSO for adequate post-thaw viability, or CM-1 (Cytion catalog number 800100), which includes optimized osmoprotectants and metabolic stabilizers to enhance recovery and reduce cryo-induced stress. |
Handling of cryopreserved cultures |
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Quality control / Genetic profile / HLA
Sterility | Mycoplasma contamination is excluded using both PCR-based assays and luminescence-based mycoplasma detection methods. To ensure there is no bacterial, fungal, or yeast contamination, cell cultures are subjected to daily visual inspections. |
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STR profile |
Amelogenin: x,x
CSF1PO: 6,1
D13S317: 11,13
D16S539: 9,13
D5S818: 10,13
D7S820: 7,12
TH01: 8
TPOX: 8
vWA: 17
D3S1358: 16
D21S11: 29,3
D18S51: 14,16
Penta E: 12
Penta D: 10
D8S1179: 15
FGA: 20,21
D6S1043: 11,19
D2S1338: 17
D12S391: 19,2
D19S433: 14,15
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Certificate of Analysis (CoA)
Lot Number | Certificate Type | Date | Catalog Number |
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305126-260723 | Certificate of Analysis | 23. May. 2025 | 305126 |