Patent application number | Description | Published |
20090309618 | Real Time Electronic Cell Sensing System and Applications For Cytotoxicity Profiling and Compound Assays - The present invention includes devices, systems, and methods for assaying cells using cell-substrate impedance monitoring. In one aspect, the invention provides cell-substrate impedance monitoring devices that comprise electrode arrays on a nonconducting substrate, in which each of the arrays has an approximately uniform electrode resistance across the entire array. In another aspect, the invention provides cell-substrate monitoring systems comprising one or more cell-substrate monitoring devices comprising multiple wells each having an electrode array, an impedance analyzer, a device station that connects arrays of individual wells to the impedance analyzer, and software for controlling the device station and impedance analyzer. In another aspect, the invention provides cellular assays that use impedance monitoring to detect changes in cell behavior or state. The methods can be used to test the effects of compounds on cells, such as in cytotoxicity assays. Methods of cytotoxicity profiling of compounds are also provided. | 12-17-2009 |
20100029506 | Label-Free Monitoring of Excitation-Contraction Coupling and Excitable Cells Using Impedance Based Systems with Millisecond Time Resolution - Systems and methods for improved monitoring of excitation-contraction coupling and excitable cells are provided, which provide millisecond time resolution. The system is capable of continuously monitoring excitation-contraction coupling in a relatively high-throughput manner. The system includes a device for monitoring cell-substrate impedance, an impedance analyzer capable of impedance measurements at millisecond time resolution, electronic circuitry that can engage the device and selectively connect two or more electrode arrays of the device to the impedance analyzer and a software program that controls the electronic circuitry and records and analyzes data obtained from the impedance analyzer. | 02-04-2010 |
20110039294 | SYSTEM AND METHOD FOR MONITORING CARDIOMYOCYTE BEATING, VIABILITY AND MORPHOLOGY AND FOR SCREENING FOR PHARMACOLOGICAL AGENTS WHICH MAY INDUCE CARDIOTOXICITY OR MODULATE CARDIOMYOCYTE FUNCTION - Devices and methods for performing extracellular recording of cells, such as excitable cells, cardiomyocytes, and cardiomyocyte precursor cells is provided. An exemplary device includes a nonconductive substrate forming or provided as a base of one or more wells; a recording electrode positioned on the substrate within the well, wherein the recording electrode is accessible to cells when a cell sample is added to the device; and a reference electrode positioned within the well in a cell-free zone, the cell-free zone characterized as free from contact with cells when the cell sample is added to the device, thereby preventing contact between cells and the reference electrode. | 02-17-2011 |
20110300569 | DATA ANALYSIS OF IMPEDANCE-BASED CARDIOMYOCYTE-BEATING SIGNALS AS DETECTED ON REAL-TIME CELL ANALYSIS (RTCA) CARDIO INSTRUMENTS - A method of determining one or more beating parameters for use in cardiomyocyte beating analysis including: providing a cell analysis device including wells, each well including a sensor capable of monitoring beating of cardiomyoctes in millisecond time resolution; adding cardiomyocytes to the wells; monitoring the beating of the cardiomyocytes in millisecond time resolution to obtain a plurality of beating measurements; and calculating one or more beating parameters from the plurality of beating measurements. | 12-08-2011 |
20120225424 | Device and Method for Electroporation-Based Delivery of Molecules Into Cells and Dynamic Monitoring of Cell Responses - The present invention includes devices and methods for transfecting a cell or cell population and dynamic monitoring of cellular events. A variety of microelectronic devices are provide that incorporate functions such as electroporation, modulation of a transmembrane potential and dynamic monitoring of cellular functions and mechanisms. | 09-06-2012 |
20120295253 | Dynamic Monitoring of Activation of Receptor Tyrosine Kinase (RTK) in Living Cells Using Real-Time Microelectronic Cell Sensing Technology - Methods for identifying a compound capable of interacting with a Receptor Tyrosine Kinase (RTK) including providing a device capable of measuring cell-substrate impedance, adding test cells expressing a RTK to the device, measuring first impedances, adding a compound to at least one compound well and adding a vehicle control at least one control well, measuring second impedances of the compound well and the control well, determining the change in the impedance for the compound well and the one control well, comparing the change in impedance between the compound well and the control well, and identifying the compound interacts with the RTK if the comparison demonstrates a significant difference between the change in impedance. | 11-22-2012 |
20120322050 | USING IMPEDANCE-BASED CELL RESPONSE PROFILING TO IDENTIFY PUTATIVE INHIBITORS FOR ONCOGENE ADDICTED TARGETS OR PATHWAYS - Use of impedance devices in methods of generating a time dependent cellular profiles (TCRP) for the modulation of oncogene addicted cells and comparing the impedance-based TCRP to controls or knowns to identify signature time dependent cellular profiles. | 12-20-2012 |
20130123136 | REAL-TIME ELECTRONIC CELL SENSING SYSTEM AND APPLICATIONS FOR CYTOTOXICITY PROFILING AND COMPOUND ASSAYS - A method of performing an assay of a response of two or more cell types to a test compound, including: providing a device for monitoring cell-substrate impedance, adding at least two different cell types to the device; adding at least one test compound to form at least two test compound wells; providing at least two control wells; monitoring impedance of the at least two test compound wells and of the at least two control wells at three or more time points after adding the at least one test compound; and analyzing measured impedance from the at least two test compound wells and from the at least two control wells at the three or more time points to obtain information on the response of the different cell types to the at least one test compound. | 05-16-2013 |
20140203818 | SYSTEM AND METHOD FOR MONITORING CARDIOMYOCYTE BEATING, VIABILITY, MORPHOLOGY, AND ELECTROPHYSIOLOGICAL PROPERTIES - Devices, systems and methods for monitoring excitable cells, such as cardiomyocytes, on microelectrode arrays that couple the electro-stimulation of excitable cells to induce or regulate cardiomyocyte beating and the simultaneous measurement of impedance and extracellular recording to assess changes in cardiomyocyte beating, viability, morphology or electrophysical properties in response to a plurality of treatments. | 07-24-2014 |