Quantify cardiomyocytes from stem cells
Published 20 October, 2007
Date: October 19, 2007
Project Title: Live cell and HCS assays to quantify production of cardiomyocytes from stem cells (Phase II)
Principal Investigator: Patrick M. McDonough, Ph.D.
Abstract: Heart failure is a leading cause of mortality in modern society, and is the result from the death of cardiac myocytes. Contractile function of failing hearts can be restored by injecting the heart with embryonic stem cell-derived cardiac myocytes (ESCMs) which integrate into the host tissue. To facilitate production of ESCMs, high throughput screening systems are needed that can quantify ESCM production. The proposed research will develop an instrument that will utilizes live cell and high content screening (HCS) techniques to quantify the occurrence of ESCMs for stem cells cultured in 96-well dishes. The system will record intracellular calcium transients from ESCM cultures, which are a hallmark of differentiated cardiac myocytes. The system will feature electrode and controller assemblies that interface to commercial high content microscopy workstations (e.g., the Beckman IC100 and the Amersham Incell 1000) and will discriminate cells based on expression of fluorescent transgenes. Staining reagents and software for automated image analysis will also be developed to quantify the cellular expression and organization of cardiac-specific structures (myofibrils) and proteins (SERCA2). The system will enable testing of candidate chemicals for their ability to influence differentiation of ESCMs and provide a platform for conducting chemical genomic studies of the differentiation process. We will develop an instrument that will help researchers produce heart cells from embryonic stem cells. Heart cells produced in this manner can potentially be used to treat heart disease.
Keywords: biomedical equipment, biomedical equipment development, cardiac myocyte, cell differentiation, cell population study, embryonic stem cell, molecular /cellular imaging calcium, computer data analysis, computer program /software, computer system design /evaluation, electrode, electrostimulus, fluorescence, fluorescence microscopy, gene expression, high throughput technology, image processing, intracellular, robotics, transfection bioengineering /biomedical engineering, bioimaging /biomedical imaging, calcium indicator, digital imaging, infant animal, laboratory rat, tissue /cell culture
Media Contact: Valerie M. Hilberg, Direct dial (619) 987-0733
*The project described was supported by Grant Number R42HL086076 from the National Heart, Lung, And Blood Institute.