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dc.contributor.authorWhetton, Anthony D
dc.contributor.authorVallance, S J
dc.contributor.authorMonk, P N
dc.contributor.authorCragoe, E J
dc.contributor.authorDexter, T Michael
dc.contributor.authorHeyworth, Clare M
dc.date.accessioned2010-11-11T15:58:38Z
dc.date.available2010-11-11T15:58:38Z
dc.date.issued1988-12-01
dc.identifier.citationInterleukin-3-stimulated haemopoietic stem cell proliferation. Evidence for activation of protein kinase C and Na+/H+ exchange without inositol lipid hydrolysis. 1988, 256 (2):585-92 Biochem Jen
dc.identifier.issn0264-6021
dc.identifier.pmid3265621
dc.identifier.urihttp://hdl.handle.net/10541/115451
dc.description.abstractInterleukin 3 (IL-3) is an important regulator of haemopoietic stem cell proliferation both in vivo and in vitro. Little is known about the possible mechanisms whereby this growth factor acts on stem cells to stimulate cell survival and proliferation. Here we have investigated the role of intracellular pH and the Na+/H+ antiport in stem cell proliferation using the multipotential IL-3-dependent stem cell line, FDCP-Mix 1. Evidence is presented that IL-3 can stimulate the activation of an amiloride-sensitive Na+/H+ exchange via protein kinase C activation. IL-3-mediated activation of the Na+/H+ exchange is not observed in FDCP-Mix 1 cells where protein kinase C levels have been down-modulated by treatment with phorbol esters. Also the protein kinase C inhibitor H7 can inhibit IL-3-mediated increases in intracellular pH. This activation of Na+/H+ exchange via protein kinase C has been shown to occur with no measurable effects of IL-3 on inositol lipid hydrolysis or on cytosolic Ca2+ levels. Evidence is also presented that this IL-3-stimulated alkalinization acts as a signal for cellular proliferation in stem cells.
dc.language.isoenen
dc.subjectHaematopoietic Stem Cellsen
dc.subject.mesh1-(5-Isoquinolinesulfonyl)-2-Methylpiperazine
dc.subject.meshCell Division
dc.subject.meshCell Line
dc.subject.meshEnzyme Activation
dc.subject.meshHematopoietic Stem Cells
dc.subject.meshHydrogen-Ion Concentration
dc.subject.meshInositol Phosphates
dc.subject.meshInterleukin-3
dc.subject.meshIsoquinolines
dc.subject.meshPiperazines
dc.subject.meshProtein Kinase C
dc.subject.meshTetradecanoylphorbol Acetate
dc.subject.meshThymidine
dc.titleInterleukin-3-stimulated haemopoietic stem cell proliferation. Evidence for activation of protein kinase C and Na+/H+ exchange without inositol lipid hydrolysis.en
dc.typeArticleen
dc.contributor.departmentDepartment of Biochemistry and Applied Molecular Biology, University of Manchester Institute of Science and Technology, U.K.en
dc.identifier.journalBiochemical Journalen
html.description.abstractInterleukin 3 (IL-3) is an important regulator of haemopoietic stem cell proliferation both in vivo and in vitro. Little is known about the possible mechanisms whereby this growth factor acts on stem cells to stimulate cell survival and proliferation. Here we have investigated the role of intracellular pH and the Na+/H+ antiport in stem cell proliferation using the multipotential IL-3-dependent stem cell line, FDCP-Mix 1. Evidence is presented that IL-3 can stimulate the activation of an amiloride-sensitive Na+/H+ exchange via protein kinase C activation. IL-3-mediated activation of the Na+/H+ exchange is not observed in FDCP-Mix 1 cells where protein kinase C levels have been down-modulated by treatment with phorbol esters. Also the protein kinase C inhibitor H7 can inhibit IL-3-mediated increases in intracellular pH. This activation of Na+/H+ exchange via protein kinase C has been shown to occur with no measurable effects of IL-3 on inositol lipid hydrolysis or on cytosolic Ca2+ levels. Evidence is also presented that this IL-3-stimulated alkalinization acts as a signal for cellular proliferation in stem cells.


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