Abstract:
:Comparative fluorimetric, flow cytofluorimetric and fluorescence ratiometric determinations of intracellular K+ concentrations in murine haemopoietic cells (FDCP-Mix clone A4) cultured in the presence and absence of the specific growth factor Interleukin-3 were carried out with the fluorescent potassium-binding benzofuran-isophthalate acetoxymethyl ester probe. Cell suspensions kept in the absence of Interleukin-3 for 5 hours exhibited lower fluorescence intensities and smaller fluorescence ratios than their growth-factor-replete counterparts, an effect found to be reversible by readdition of the growth factor. It is concluded that Interleukin-3 deprivation of these cells leads to loss of intracellular K+. It is tentatively suggested that this deprivation-induced K+ loss might be associated with an early event in apoptotic cell death.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Laskay G,Várhelyi T,Dale RE,Dexter TMdoi
10.1006/bbrc.1995.2294subject
Has Abstractpub_date
1995-09-14 00:00:00pages
348-53issue
2eissn
0006-291Xissn
1090-2104pii
S0006291X85722942journal_volume
214pub_type
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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pub_type: 杂志文章
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