Related Experiment Video
Updated: Mar 22, 2026
Simultaneous Isolation of High Quality Cardiomyocytes, Endothelial Cells, and Fibroblasts from an Adult Rat Heart
Published on: May 19, 2017
Isolation of Cardiomyocytes and Cardiofibroblasts for Ex Vivo Analysis
George Williams Mbogo1, Christina Nedeva1, Hamsa Puthalakath2
1Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC, 3086, Australia.
Insights
Researchers developed methods to culture heart cells (cardiomyocytes) and support cells (cardiofibroblasts) ex vivo. This enables testing new heart failure therapies by observing cell apoptosis and drug responses.
Area of Science:
- Cardiovascular Biology
- Cellular Cardiology
- Regenerative Medicine
Background:
- Heart failure (HF) results from various causes, leading to reduced cardiac output.
- Cardiomyocyte apoptosis, partly due to beta-adrenergic signaling, is a key factor in HF.
- Existing HF treatments like beta-blockers have limitations.
Purpose of the Study:
- To establish reliable methods for isolating and culturing cardiomyocytes and cardiofibroblasts ex vivo.
- To facilitate the development of novel therapeutics for heart failure.
- To enable the study of cardiomyocyte apoptotic responses to potential drugs.
Main Methods:
- Isolation and culturing of neonatal and adult calcium-tolerant cardiomyocytes.
- Isolation of cardiofibroblasts using a similar protocol.
- Immortalization of cardiofibroblasts using SV40 T-Antigen for extended ex vivo studies.
Main Results:
- Successful isolation and culturing of viable cardiomyocytes and cardiofibroblasts.
- Demonstrated feasibility of maintaining these cells ex vivo for experimental purposes.
- Established a foundation for drug screening and mechanistic studies.
Conclusions:
- The described methods provide a crucial platform for advancing heart failure research.
- Ex vivo culture of cardiomyocytes and cardiofibroblasts is essential for developing new heart failure treatments.
- This approach supports the investigation of cell death pathways and therapeutic interventions.
Abstract:
Heart failure (HF) is a common clinical endpoint to several underlying causes including aging, hypertension, stress, and cardiomyopathy. It is characterized by a significant decline in the cardiac output. Cardiomyocytes are terminally differentiated cells and therefore, apoptotic death due to beta adrenergic (β-AR) signaling contributes to high attrition rate of these cells. Past treatments of HF offer some survival benefit to patients (e.g., the beta blockers), but at the expense of blocking the compensatory beta-adrenergic signaling in surviving cells. One prerequisite for developing new therapeutics is to be able to grow cardiomyocytes ex vivo, and test their apoptotic response to drugs. Here we describe methods for isolation and culturing of neonatal and adult calcium tolerant cardiomyocytes. Similarly, cardiofibroblasts can also be isolated using the same protocol and subsequently, immortalized with SV40 T-Antigen for ex vivo studies.
