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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Gamma interferon induces monocytoid differentiation in the HL-60 cell line.

We investigated the ability of purified, recombinant DNA-derived interferons (IFN) to induce phenotypic changes in cells of the HL-60 promyelocytic leukemia cell line. Changes in cell surface markers detected by monoclonal antibodies as well as morphologic, histochemical, and functional changes were monitored. We found that gamma-IFN, but not alpha- or beta-IFN, induced the expression of antigens characteristic of monocytes and granulocytes (AML-2-23, 63D3, and 61D3), as well as changes in morphology consistent with monocytoid differentiation. These included induction of alpha-naphthyl acetate esterase, increased cell size, and a decrease in azurophilic granules. The gamma-IFN dose dependency and time course of the effect on antigen expression suggest that de novo protein synthesis was induced by gamma-IFN. The activity of gamma-IFN and of mixed-lymphocyte culture supernatant was blocked by a monoclonal antibody to gamma-IFN. Significant augmentation in the ability of the HL-60 cells to mediate antibody-dependent cellular cytotoxicity was induced by gamma-IFN. These findings suggest that gamma-IFN plays a role in the regulation of hematopoiesis.[1]

References

  1. Gamma interferon induces monocytoid differentiation in the HL-60 cell line. Ball, E.D., Guyre, P.M., Shen, L., Glynn, J.M., Maliszewski, C.R., Baker, P.E., Fanger, M.W. J. Clin. Invest. (1984) [Pubmed]
 
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