KBM-7 cells
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KBM-7 cells are a Chronic myelogenous leukemia (CML) cell line used for biomedical research. Like all cancer cell lines, it is immortal and can divide indefinitely. A unique aspect of the KBM-7 cell line is that it is near-haploid, meaning it contains only one copy for most of its chromosomes.
Origin
KBM-7 cells were derived from a 39-year-old man with chronic myeloid leukemia in blast crisis.[1] The original cell line contained both near haploid and hyperdiploid clones. Subsequent subcloning yielded a pure near-haploid cell line.[2] Genome analysis has revealed that besides the disomic chromosome 8 also a 30 megabase fragment of chromosome 15 is present in two copies.[3] Like other CML cells lines (e.g., K562) KBM-7 cells are positive for the Philadelphia chromosome harboring the BCR-ABL oncogenic fusion. KBM-7 cells have been reprogrammed to yield the HAP1 cell line which is also monosomy for chromosome 8.[4]
Cultivation
KBM-7 cells grow in suspension and are maintained in Iscove's Modified Dulbecco's Medium (IMDM) supplemented with 10% fetal bovine serum. They divide approximately every 24 hours.
