PMID: 8960107Oct 1, 1996Paper

Growth of single HL60 cells in liquid culture: analysis of the influences of differentiative agents

Leukemia Research
L A WallingtonG Brown

Abstract

Treatment of serum-free grown HL60 cells with certain combined amounts of retinoic acid (9-cis or all-trans RA) and 1 alpha 25 dihydroxyvitamin D3 (D3) results in differentiation of 71-77% of cells towards either neutrophils or monocytes. Studies of the differentiation of HL60 cells in flask cultures does not reveal: (i) the extent to which selective growth of cells might have occurred; and (ii) the overall level of cell survival. This information can be obtained by monitoring the effects of differentiative agents on individual cells. Serum-free grown HL60 cells were cultured as single cells in microtitre wells in conditioned medium obtained from exponentially growing and serum-free cultures of HL60. This resulted in a cloning efficiency of 85% and HL60 cells doubled every 24 h. During a period of exponential growth < 0.5 to 2% of the cells generated died. Single HL60 cells were treated with 9-cis and all-trans RA (5 x 10(-7) M) together with a small amount of D3 (3.9 x 10(-14) M) to promote neutrophil differentiation. D3 alone (10(-7) M) and D3 (5 x 10(-9) M) in combination with 9-cis RA (10(-8) M) were used to promote monocyte differentiation. The growth kinetics of HL60 cell cultures that were differentiating to neutrophils ...Continue Reading

References

Aug 1, 1986·The Journal of Clinical Investigation·R MunkerH P Koeffler
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Citations

Dec 11, 2002·Cellular Immunology·Sang Yun NamEckhard R Podack
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