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Published on: January 10, 2012
Zebrafish Models of Cardiac Disease: From Fortuitous Mutants to Precision Medicine
1Cardiovascular Research Center, Massachusetts General Hospital Research Institute, Harvard Medical School, Charlestown, MA.
Abstract:
Heart disease is the leading cause of death worldwide. Despite decades of research, most heart pathologies have limited treatments, and often the only curative approach is heart transplantation. Thus, there is an urgent need to develop new therapeutic approaches for treating cardiac diseases. Animal models that reproduce the human pathophysiology are essential to uncovering the biology of diseases and discovering therapies. Traditionally, mammals have been used as models of cardiac disease, but the cost of generating and maintaining new models is exorbitant, and the studies have very low throughput. In the last decade, the zebrafish has emerged as a tractable model for cardiac diseases, owing to several characteristics that made this animal popular among developmental biologists. Zebrafish fertilization and development are external; embryos can be obtained in high numbers, are cheap and easy to maintain, and can be manipulated to create new genetic models. Moreover, zebrafish exhibit an exceptional ability to regenerate their heart after injury. This review summarizes 25 years of research using the zebrafish to study the heart, from the classical forward screenings to the contemporary methods to model mutations found in patients with cardiac disease. We discuss the advantages and limitations of this model organism and introduce the experimental approaches exploited in zebrafish, including forward and reverse genetics and chemical screenings. Last, we review the models used to induce cardiac injury and essential ideas derived from studying natural regeneration. Studies using zebrafish have the potential to accelerate the discovery of new strategies to treat cardiac diseases.
Insights
Zebrafish offer a cost-effective, high-throughput model for studying heart disease. Their unique regenerative abilities and genetic tractability accelerate the discovery of novel cardiac therapies.
Area of Science:
- Cardiovascular Research
- Model Organism Studies
- Regenerative Medicine
Background:
- Heart disease remains a leading global cause of mortality, with limited therapeutic options beyond transplantation.
- Current animal models for cardiac disease research are often costly and low-throughput.
- There is a critical need for innovative, efficient models to advance cardiac disease research and therapy development.
Purpose of the Study:
- To review the use of zebrafish as a model organism for studying cardiac diseases over the past 25 years.
- To highlight the advantages and limitations of zebrafish in cardiac research.
- To discuss experimental approaches and insights gained from zebrafish studies for developing new cardiac treatments.
Main Methods:
- Review of literature on zebrafish cardiac research from forward genetic screens to patient mutation modeling.
- Discussion of experimental approaches including forward and reverse genetics, chemical screenings, and cardiac injury models.
- Analysis of zebrafish's natural heart regeneration capabilities.
Main Results:
- Zebrafish have proven to be a valuable and versatile model for investigating cardiac disease mechanisms.
- The organism's external fertilization, high fecundity, and genetic manipulability facilitate large-scale studies.
- Zebrafish research has provided significant insights into cardiac regeneration and disease pathology.
Conclusions:
- Zebrafish models significantly accelerate the discovery of novel therapeutic strategies for heart disease.
- The unique biological characteristics of zebrafish offer a powerful platform for advancing cardiovascular research.
- Continued utilization of zebrafish holds substantial promise for improving treatments for cardiac conditions.
