1980
DOI: 10.1182/blood.v56.4.717.bloodjournal564717
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The fractionation, characterization, and subcellular localization of colony-stimulating activities released by the human monocyte-like cell line, GCT

Abstract: GCT, a human monocyte-like cell line, has been shown to release biochemically distinct colony-stimulating activities (CSAs) for mouse and human marrows. These appear to be periodate-sensitive proteins with critical disulfide bonds. One, of molecular weight 145,000 daltons, stimulates macrophagic colony growth and is related to a 30,000-dalton molecule that also stimulates mouse growth. A 30,000-dalton CSA for human marrow can be separated from the 30,000-dalton mouse CSA by isoelectric focusing and gradient po… Show more

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Cited by 8 publications
(9 citation statements)
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“…Thereafter, 1 x lo5 normal nonadherent marrow cells in agar medium were overlayered, the plates incubated under standard conditions Abboud et al, 19801, and colonies counted on days 7 and 14. In other studies, supernates from HL-60 cells cultured in the presence of 0-1.5% DMSO were studied for GM-CSF by incorporation into single-layer, methylcellulose cultures of normal, nonadherent marrow cells (Collins et al, 1978;DiPersio et al, 1980) and also for the ability to stimulate 3HTdr incorporation into HL-60 microcultures containing 0-1.5% DMSO as described above.…”
Section: Hl-60 Cell Maturationmentioning
confidence: 99%
“…Thereafter, 1 x lo5 normal nonadherent marrow cells in agar medium were overlayered, the plates incubated under standard conditions Abboud et al, 19801, and colonies counted on days 7 and 14. In other studies, supernates from HL-60 cells cultured in the presence of 0-1.5% DMSO were studied for GM-CSF by incorporation into single-layer, methylcellulose cultures of normal, nonadherent marrow cells (Collins et al, 1978;DiPersio et al, 1980) and also for the ability to stimulate 3HTdr incorporation into HL-60 microcultures containing 0-1.5% DMSO as described above.…”
Section: Hl-60 Cell Maturationmentioning
confidence: 99%
“…Mononucleated cells from bone marrow or peripheral blood were separated by density-gradient centrifugation (30 min at 400g) using Ficoll-Hypaque (1.077 g/ml). Two X lo5 cells were incubated in semisolid culture medium containing 20% fetal calf serum (FCS), 10% giant cell tumor-conditioned medium (GCT-CM, GIBCO) as colony-stimulating factor, and 0.3% agar in alphamedium (a-MEM), and were then cultured for 14 days at 37°C in 5% CO, in air for CFU-GM [9]. Colonies with more than 50 cells were counted as CFU-GM.…”
Section: Assay For Hemopoietic Progenitor Cellsmentioning
confidence: 99%
“…Mononuclear human blood cells (5 x 10S/ml) or bone marrow cells (105/ml) were cultured for 14 d in 0.3% agar (Bacto-Agar, Difco), in McCoy's 5A or CMRL 1066 medium, with 18% FCS. BMC cultures were stimulated with 0.1 ml of GCT (Gibco) which contains a CSF produced by an established human monocyte-like cell line (13). Blood cell cultures were run with or without GCT, which made no difference.…”
Section: Gy-cfc Assaymentioning
confidence: 99%