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Matches in SemOpenAlex for { <https://semopenalex.org/work/W2000752001> ?p ?o ?g. }

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• W2000752001 abstract "Increasing evidence that ion channels play a key role in the modulation of cellular mitogenesis led us to investigate the membranes of T47D human breast cancer cells to identify the ion currents present. We report here the results of voltage-clamp studies in the whole-cell configuration on isolated, non-synchronized single cells obtained from a ductal breast carcinoma. In these studies we identified an outward rectifying potassium current and a chloride current. The potassium current activated at potentials more positive than −40 mV, reached an average value of 1.4 nA, and did not inactivate with time. This current was sensitive to block by extracellular tetraethylammonium chloride (TEA, IC50 = 1 μM), was insensitive to charybdotoxin (CTX, IC50 = 7.8 μM), and was not diminished by repetitive pulses separated by 1 s. Rapid voltage-dependent inactivation of the current was demonstrated by tail current analysis. The current appeared calcium-insensitive. Application of hyperpolarizing pulses did not elicit an inward potassium rectifier current. Treatment with tetrodotoxin did not reveal the presence of an inward sodium current. The potassium current was increased by the presence of aspartate in place of chloride and in the presence of the chloride channel blocker 4,4′-diisothiocyanostilbene-2,2′-disulfonic acid (DIDS). We conclude that currents present in T47D breast cancer cells include a chloride current and a voltage-gated potassium outward rectifier. We suggest that the potassium current, either alone or in conjunction with potassium currents reported in different human breast cancer cell lines by others, may play a role in the modulation of the cell cycle." @default.
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• W2000752001 date "1996-06-01" @default.
• W2000752001 modified "2023-09-26" @default.
• W2000752001 title "Ionic Signals in T47D Human Breast Cancer Cells" @default.
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• W2000752001 doi "https://doi.org/10.1016/0898-6568(96)00050-2" @default.
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