ATCC® Number: CCL-243™
Designations: K-562
Depositors: HT Holden
Biosafety Level: 1
Shipped: frozen
Medium & Serum: See Propagation
Growth Properties: suspension
Organism: Homo sapiens （human）
Morphology: lymphoblast

Source: Organ: bone marrow
Disease: chronic myelogenous leukemia （CML）
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Applications: transfection host （Nucleofection technology from Lonza）
Tumorigenic: Yes
Reverse Transcript: negative
Antigen Expression: CD7 （25%）
DNA Profile （STR）: Amelogenin: X
CSF1PO: 9,10
D13S317: 8
D16S539: 11,12
D5S818: 11,12
D7S820: 9,11
THO1: 9.3
TPOX: 8,9
vWA: 16
Cytogenetic Analysis: The stemline chromosome number is triploid with the 2S component occurring at 4.2%. Fifteen markers （M1 ａnd M（15）） occurred in nearly all S metaphases. Spontaneous non-specific dicentrics occurred, but rarely. Unstable markers were also rarely seen. The X was disomic, ａnd N9 was nullisomic.
Isoenzymes: AK-1, 1
ES-D, 1
G6PD, B
GLO-I, 2
Me-2, 0
PGM1, 0
PGM3, 1
Age: 53 years
Gender: female
Comments: The continuous cell line K-562 was established by Lozzio ａnd Lozzio from the pleural effusion of a 53-year-old female with chronic myelogenous leukemia in terminal blast crises. [22609]
The cell population has been characterized as highly undifferentiated ａnd of the granulocytic series. [26059]
Studies conducted by Anderson, et al., on the surface membrane properties led to the conclusion that the K-562 was a human erythroleukemia line. [26060]
The K-562 cell line has attained widespread use as a highly sensitive in vitro target for the natural killer assay. [48829] [1101] [48830]
See Pross, et al. for a detailed analysis of the in vitro assay of NK cells including the mathematics of quantitation of NK cell activity. [48833]
K-562 blasts are multipotential, hematopoietic malignant cells that spontaneously differentiate into recognizable progenitors of the erythrocytic, granulocytic ａnd monocytic series. [26061]
The effect of inducers on sublines derived from the original K-562 cell line have been reviewed by Koeffler ａnd Golde. [867]
Cultures from the ATCC stock have been shown to exhibit this sensitivity for assessing human natural killer activity.
Karyological studies on various K-562 sublines have been classified into three groups （A,B,C） by Dimery, et al. [26063]
The strain obtained by the ATCC most closely resembles the B population. Occurrence of the Philadelphia chromosome, however, was of much lower frequency; none detected in 15 metaphases examined.
The line is EBNA negative.
Propagation: ATCC complete growth medium: The base medium for this cell line is ATCC-formulated Iscove＇s Modified Dulbecco＇s Medium, Catalog No. 30-2005. To make the complete growth medium, add the following components to the base medium: fetal bovine serum to a final concentration of 10%.
Atmosphere: air, 95%; carbon dioxide （CO2）, 5%
Temperature: 37.0°C
Subculturing: Protocol: Cultures can be maintained by the addition or replacement of fresh medium. Start new cultures at 1 X 10 exp5 viable cells/ml. Subculture at 1 X 10 exp6 cells/ml.
Medium Renewal: Every 2 to 3 days
Preservation: Freeze medium: Complete growth medium 95%; DMSO, 5%
Storage temperature: liquid nitrogen vapor temperature
Related Products: Recommended medium （without the additional supplements or serum described under ATCC Medium）:ATCC 30-2005
recommended serum:ATCC 30-2020
purified DNA:ATCC CCL-243D
purified RNA:ATCC CCL-243R
References: 867: Koeffler HP, Golde DW. Human myeloid leukemia cell lines: a review. Blood 56: 344-350, 1980. PubMed: 6996765
1101: Ortaldo JR, et al. Specificity of natural cytotoxic reactivity of normal human lymphocytes against a myeloid leukemia cell line. J. Natl. Cancer Inst. 59: 77-82, 1977. PubMed: 69036
22609: Lozzio CB, Lozzio BB. Human chronic myelogenous leukemia cell-line with positive Philadelphia chromosome. Blood 45: 321-334, 1975. PubMed: 163658
26059: Lozzio BB, Lozzio CB. Properties ａnd usefulness of the original K-562 human myelogenous leukemia cell line. Leuk. Res. 3: 363-370, 1979. PubMed: 95026
26060: Andersson LC, et al. K562－－a human erythroleukemic cell line. Int. J. Cancer 23: 143-147, 1979. PubMed: 367973
26061: Lozzio BB, et al. A multipotential leukemia cell line （K-562） of human origin. Proc. Soc. Exp. Biol. Med. 166: 546-550, 1981. PubMed: 7194480
26063: Dimery IW, et al. Variation amongst K562 cell cultures. Exp. Hematol. 11: 601-610, 1983. PubMed: 6576909
32357: Chan YJ, et al. Two distinct upstream regulatory domains containing multicopy cellular transcription factor binding sites provide basal repression ａnd inducible enhancer characteristics to the immediate-