Combinations of colony-stimulating factors promote enhanced proliferative potential in enriched granulocyte-macrophage colony-forming cells.

2.50
Hdl Handle:
http://hdl.handle.net/10541/96218
Title:
Combinations of colony-stimulating factors promote enhanced proliferative potential in enriched granulocyte-macrophage colony-forming cells.
Authors:
Heyworth, Clare M; Dexter, T Michael; Nicholls, S E; Whetton, Anthony D
Abstract:
The effects of combinations of colony-stimulating factors (CSFs) have been assessed using a highly enriched population of murine granulocyte-macrophage colony-forming cells (GM-CFC). Unlike the situation observed with more primitive myeloid progenitor cells, little or no effect on the numbers of colonies formed from GM-CFC in response to specific combinations of growth factors was observed; however, the size of the majority of colonies formed was greatly increased. The largest increase in the number of cells per colony was observed when interleukin-3 (IL-3) was present with either granulocyte-macrophage colony-stimulating factor (GM-CSF), GM-CSF plus granulocyte-colony-stimulating factor (G-CSF), or macrophage colony-stimulating factor (M-CSF); there was a > five-fold increase when compared to colony size in the presence of IL-3 alone. The combination of G-CSF with IL-3 was not able to promote an increase in mean colony size; however, G-CSF plus GM-CSF did give a significant increase. Where combinations of hematopoietic growth factors led to increased numbers of cells per colony, the delayed addition of one of the cytokines to soft gel assays for a period > 2 days led to a loss of the observed enhancement in the number of cells per colony. In cultures of progenitor cells enriched by centrifugal elutriation and that contained combinations of CSFs, there was an increase in the number of GM-CFC over a 2-day incubation period. The distinct effects observed with GM-CSF, IL-3, and G-CSF on GM-CFC suggest that they influence different molecular signaling mechanisms within common target progenitor cells.
Affiliation:
Department of Experimental Haematology, Paterson Laboratories, Christie Hospital NHS Trust, Withington, Manchester, UK.
Citation:
Combinations of colony-stimulating factors promote enhanced proliferative potential in enriched granulocyte-macrophage colony-forming cells. 1994, 22 (11):1089-94 Exp. Hematol.
Journal:
Experimental Hematology
Issue Date:
Oct-1994
URI:
http://hdl.handle.net/10541/96218
PubMed ID:
7925776
Type:
Article
Language:
en
ISSN:
0301-472X
Appears in Collections:
All Paterson Institute for Cancer Research

Full metadata record

DC FieldValue Language
dc.contributor.authorHeyworth, Clare Men
dc.contributor.authorDexter, T Michaelen
dc.contributor.authorNicholls, S Een
dc.contributor.authorWhetton, Anthony Den
dc.date.accessioned2010-04-09T14:47:55Z-
dc.date.available2010-04-09T14:47:55Z-
dc.date.issued1994-10-
dc.identifier.citationCombinations of colony-stimulating factors promote enhanced proliferative potential in enriched granulocyte-macrophage colony-forming cells. 1994, 22 (11):1089-94 Exp. Hematol.en
dc.identifier.issn0301-472X-
dc.identifier.pmid7925776-
dc.identifier.urihttp://hdl.handle.net/10541/96218-
dc.description.abstractThe effects of combinations of colony-stimulating factors (CSFs) have been assessed using a highly enriched population of murine granulocyte-macrophage colony-forming cells (GM-CFC). Unlike the situation observed with more primitive myeloid progenitor cells, little or no effect on the numbers of colonies formed from GM-CFC in response to specific combinations of growth factors was observed; however, the size of the majority of colonies formed was greatly increased. The largest increase in the number of cells per colony was observed when interleukin-3 (IL-3) was present with either granulocyte-macrophage colony-stimulating factor (GM-CSF), GM-CSF plus granulocyte-colony-stimulating factor (G-CSF), or macrophage colony-stimulating factor (M-CSF); there was a > five-fold increase when compared to colony size in the presence of IL-3 alone. The combination of G-CSF with IL-3 was not able to promote an increase in mean colony size; however, G-CSF plus GM-CSF did give a significant increase. Where combinations of hematopoietic growth factors led to increased numbers of cells per colony, the delayed addition of one of the cytokines to soft gel assays for a period > 2 days led to a loss of the observed enhancement in the number of cells per colony. In cultures of progenitor cells enriched by centrifugal elutriation and that contained combinations of CSFs, there was an increase in the number of GM-CFC over a 2-day incubation period. The distinct effects observed with GM-CSF, IL-3, and G-CSF on GM-CFC suggest that they influence different molecular signaling mechanisms within common target progenitor cells.en
dc.language.isoenen
dc.subjectHaematopoiesisen
dc.subjectHaematopoietic Stem Cellsen
dc.subject.meshBone Marrow Cells-
dc.subject.meshColony-Stimulating Factors-
dc.subject.meshDrug Synergism-
dc.subject.meshGranulocytes-
dc.subject.meshHematopoiesis-
dc.subject.meshHematopoietic Stem Cells-
dc.subject.meshHumans-
dc.subject.meshMacrophages-
dc.titleCombinations of colony-stimulating factors promote enhanced proliferative potential in enriched granulocyte-macrophage colony-forming cells.en
dc.typeArticleen
dc.contributor.departmentDepartment of Experimental Haematology, Paterson Laboratories, Christie Hospital NHS Trust, Withington, Manchester, UK.en
dc.identifier.journalExperimental Hematologyen
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