Related Experiment Video
Updated: Jun 25, 2025
Intrathoracic Injection for the Study of Adult Zebrafish Heart
Published on: May 14, 2019
ZebraReg-a novel platform for discovering regulators of cardiac regeneration using zebrafish
Kateřina Apolínová1,2, Ferran Arqué Pérez3, Sylvia Dyballa3
1ZeClinics SL, Barcelona, Spain.
Insights
Zebrafish heart regeneration offers insights into potential human cardiac repair. A new automated platform, ZebraReg, screens genes and drugs to discover therapies for heart attack recovery.
Area of Science:
- Cardiovascular Research
- Regenerative Medicine
- Zebrafish Models
Background:
- Cardiovascular disease, particularly myocardial infarction, is a leading global cause of death.
- Limited cardiomyocyte regeneration in adult mammals hinders recovery after heart attack.
- Zebrafish exhibit efficient heart regeneration, offering a model to study underlying mechanisms.
Purpose of the Study:
- To establish an automated platform, ZebraReg, for studying heart regeneration kinetics in zebrafish larvae.
- To enable medium-throughput screening of genetic and pharmacological modulators of cardiac regeneration.
- To identify potential therapeutic targets for heart regeneration after myocardial infarction.
Main Methods:
- Development of ZebraReg, a versatile automated platform for zebrafish heart regeneration studies.
- Integration of automated heart imaging with genetic and pharmacological approaches.
- Medium-throughput screening of potential cardiac regeneration modulators.
Main Results:
- Demonstration of ZebraReg's versatility in identifying both pro- and anti-regenerative effects of genes and drugs.
- Successful application of the platform to study cardiomyocyte ablation and regeneration kinetics.
- Validation of ZebraReg as a tool for discovering cardiac regeneration regulators.
Conclusions:
- ZebraReg streamlines target validation for novel gene regulators of cardiac regeneration.
- The platform facilitates the discovery of new drug therapies for heart regeneration.
- Zebrafish models and ZebraReg offer a promising avenue for developing treatments for myocardial infarction.
Abstract:
Cardiovascular disease is the leading cause of death worldwide with myocardial infarction being the most prevalent. Currently, no cure is available to either prevent or revert the massive death of cardiomyocytes that occurs after a myocardial infarction. Adult mammalian hearts display a limited regeneration capacity, but it is insufficient to allow complete myocardial recovery. In contrast, the injured zebrafish heart muscle regenerates efficiently through robust proliferation of pre-existing myocardial cells. Thus, zebrafish allows its exploitation for studying the genetic programs behind cardiac regeneration, which may be present, albeit dormant, in the adult human heart. To this end, we have established ZebraReg, a novel and versatile automated platform for studying heart regeneration kinetics after the specific ablation of cardiomyocytes in zebrafish larvae. In combination with automated heart imaging, the platform can be integrated with genetic or pharmacological approaches and used for medium-throughput screening of presumed modulators of heart regeneration. We demonstrate the versatility of the platform by identifying both anti- and pro-regenerative effects of genes and drugs. In conclusion, we present a tool which may be utilised to streamline the process of target validation of novel gene regulators of regeneration, and the discovery of new drug therapies to regenerate the heart after myocardial infarction.
