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Cell line: | NAMALWA |
DSMZ no.: | ACC 24 |
Species: | human (Homo sapiens) |
Cell type: | Burkitt lymphoma |
Origin: | established from the tumor mass of a boy with Burkitt lymphoma in 1967; cells express MYC mRNA |
Reference(s): | 18146 |
Biosafety level: | 1 |
Risk assessment: | The cell line is positive for EBV (HHV-4) by PCR analysis. However, expression of immediate-early protein BZLF1 and lately expressed capsid protein were negative by western blot and immunostaining, respectively, in untreated and phorbol ester / sodium butyrate stimulated cells. The infection was classified as latent infection without production of active viruses. A transmission of EBV on handling the cells is unlikely.
Additionally, this cell line carries sequences of the squirrel monkey retrovirus (SMRV). According to a recommendation of the German Central Committee for Biological Safety (ZKBS) the cells have to be handled under biosafety level 2 when the cells are used for genetic engineering. |
Permissions and restrictions: | A, C |
| DSMZ Cell Culture Data: |
Morphology: | lymphoblastoid, single cells or small clusters in suspension; image; image; image; image; image |
Medium: | 90% RPMI 1640 + 10% h.i. FBS |
Subculture: | seed out at ca. 1 x 106 cells/ml; maintain at 0.5-1.5 x 106 cells/ml; split 1:2 to 1:4 every 2-3 days |
Incubation: | at 37 °C with 5% CO2 |
Doubling time: | about 20-30 hours |
Harvest: | maximum density at about 2.0 x 106 cells/ml or higher |
Storage: | frozen with 70% medium, 20% FBS, 10% DMSO |
| DSMZ Scientific Data: |
Mycoplasma: | contamination was eliminated with Ciprobay (ciprofloxacin), then negative in DAPI, microbiological culture, RNA hybridization, PCR assays |
Immunology: | CD3 -, CD10 +, CD13 -, CD19 +, CD34 -, CD38 +, cyCD79a +, HLA-DR +, sm/cyIgM +, sm/cyIgG -, sm/cykappa -, sm/cylambda +; image |
Authenticity: | STR analysis according to the global standard ANSI/ATCC ASN-0002.1-2021 (2021) resulted in an authentic STR profile of the reference STR database. |
Cytogenetics: | human hypodiploid karyotype with 4% polyploidy - 44(43-46)<2n>X, -Y, -5, -6, +7, -10, -13, -21, +3mar, ins(1;?)(p11;?), ins(3)(q11q29), der(5)t(1;5)(q25;q35), del(8)(p22), der(14)t(14;?)(p11;?), der(15)t(15;21)(p11;q11) - a supernumerary ring or fragment present in 8% of cells - NAMALWA marker chromosomes present |
Viruses: | ELISA: reverse transcriptase negative; PCR: EBV +, HBV -, HCV -, HHV-8 -, HIV-1 -, HIV-2 -, HTLV-1/2 -, MLV -, SMRV + |
Supplied as: | Delivery form | | Prices | | Frozen culture | | 450,- € | Growing culture (please inquire for exact delivery time) | | 900,- € | DNA isolated from cell line (25 µg) | | 560,- € | DNA isolated from cell line (5 µg) | | 140,- € | see price list |
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