COMPOSITION AND METHOD FOR MEASURING THALLIUM INFLUX AND EFFLUX

    公开(公告)号:US20190242912A1

    公开(公告)日:2019-08-08

    申请号:US16298810

    申请日:2019-03-11

    CPC classification number: G01N33/84 C12Q1/02 G01N33/6872 G01N2333/705

    Abstract: The present invention relates to methods for detecting the activity of an ion channel in a cell. The methods comprise providing a loading buffer solution to a cell that has an ion channel. The loading buffer comprises at least one thallium indicator (e.g., an environmentally sensitive, luminescent dye) and a physiological concentration of chloride ions. The methods further comprise providing a stimulus buffer to the cell, wherein the stimulus buffer comprises thallium (e.g., thallium ions). Providing the stimulus buffer causes thallium influx into the cell through the ion channel. After providing the stimulus buffer, the luminescence (e.g., fluorescence) of the dye in the cell is detected. The luminescence of the dye can change in the presence or absence of thallium. The methods may be used to measure influx or efflux of thallium through an ion channel.

    CELL ANALYSIS USING CHEMFET SENSOR ARRAY-BASED SYSTEMS

    公开(公告)号:US20200088676A1

    公开(公告)日:2020-03-19

    申请号:US16568133

    申请日:2019-09-11

    Abstract: Various cell analysis systems of the present teachings can measure the electrical and metabolic activity of single, living cells with subcellular addressability and simultaneous data acquisition for between about 10 cells to about 500,000 cells in a single analysis. Various sensor array devices of the present teachings can have sensor arrays with between 20 million to 660 million ChemFET sensors built into a massively paralleled array and can provide for simultaneous measurement of cells with data acquisition rates in the kilohertz (kHz) range. As various ChemFET sensor arrays of the present teachings can detect chemical analytes as well detect changes in cell membrane potential, various cell analysis systems of the present teachings also provide for the controlled chemical and electrical interrogation of cells.

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