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Isolation and characterization of a T lymphocyte-derived differentiation inducing factor for the myeloid leukemic cell line HL- 60

IL Olsson, MG Sarngadharan, TR Breitman and RC Gallo

Mitogen-stimulated mononuclear blood cells produce differentiation inducing factors (DIFs) for the promyelocytic cell line HL-60. We report that DIF is produced constitutively by a malignant T lymphocyte line HUT-102. DIF was purified 7,000-fold from HUT-102 conditioned media by utilizing ion-exchange chromatography with DEAE-Sepharose, gel chromatography, Blue-Sepharose chromatography, and preparative SDS- polyacrylamide gel electrophoresis (SDS-PAGE). The final preparation is susceptible to protease treatment, has a molecular weight of 46,000, as determined by SDS-PAGE and approximately 55,000 by gel filtration, has an isoelectric point of approximately 5.2, does not adhere to lectin- Sepharose and is resistant to periodate oxidation, and is free of colony-stimulating factor. DIF induced maturation of HL-60 into phagocytizing nitro blue tetrazolium reducing cells with the morphological characteristics of myelomonocytic or monocyte-like cells. An activity, co-chromatographing with DIF, acts synergistically with retinoic acid to induce maturation not only of HL-60, but also of the monoblast-like cell line U-937 (measured as percentage of cells reducing NBT).

Volume 63, Issue 3, pp. 510-517, 03/01/1984
Copyright © 1984 by The American Society of Hematology


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