Automated assays and methods for detecting and modulating cell surface protein function
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United States of America Patent
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May 2, 2000
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N/A
app pub date -
May 4, 1995
filing date -
Dec 20, 1991
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Abstract
Automated assays for detecting and measuring ion channel and cell surface receptor activity and for identifying compounds that modulate or potentiate such activity are provided. Among the assays are fluorescent indicator-based assays that use cells containing effective levels of a fluorescent indicator that is responsive to changes in ion concentration. Activation of the ion channels or receptors is initiated in the automated measurement apparatus by injection into one or more predetermined cell-containing wells of a reagent which is a known or possible activator or inhibitor of the ion channels or receptors of interest. The resulting activity of the ion channels or receptors, which causes changes in ion concentration in the cytoplasm, is determined by measurement of fluorescence intensity changes of the indicator in response to an excitation wavelength.
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