Related Experiment Video
Updated: Apr 26, 2026
Capturing the Cardiac Injury Response of Targeted Cell Populations via Cleared Heart Three-Dimensional Imaging
Published on: March 17, 2020
Cardiac regeneration in vivo: mending the heart from within?
Olaf Bergmann1, Stefan Jovinge2
1Department of Cell and Molecular Biology, Karolinska Institute, SE-171 77 Stockholm, Sweden.
Insights
The adult heart can renew its cardiomyocytes, offering hope for cardiac regeneration therapies. However, the exact mechanisms and significance of this process, including cardiac stem cells (CSCs), require further investigation for effective treatment strategies.
Area of Science:
- Cardiovascular Biology
- Regenerative Medicine
Background:
- The heart was traditionally considered terminally differentiated.
- Emerging evidence suggests the heart retains regenerative capacity through cardiomyocyte renewal post-neonatally.
- This challenges previous understandings and opens avenues for cardiac repair.
Purpose of the Study:
- To review the current understanding of cardiac stem cells (CSCs) and endogenous cardiac regeneration.
- To discuss the potential of these regenerative mechanisms for treating cardiac injuries.
- To clarify the ongoing debates regarding the magnitude, clinical significance, and underlying mechanisms of cardiac regeneration.
Main Methods:
- Literature review of studies on cardiac regeneration and cardiac stem cells.
- Analysis of proposed CSC candidates and their characteristics.
- Synthesis of current knowledge on cardiomyocyte renewal in homeostasis and disease.
Main Results:
- The heart exhibits cardiomyocyte renewal beyond the neonatal period.
- Several CSC candidates have been identified, but their distinct properties complicate identification of the primary regenerative source.
- The clinical relevance and molecular underpinnings of endogenous regeneration remain subjects of debate.
Conclusions:
- The regenerative potential of the heart offers promising therapeutic strategies for cardiac conditions.
- Further research is crucial to elucidate the precise roles of CSCs and identify the endogenous mechanisms driving cardiac repair.
- Understanding these processes is key to developing effective regenerative medicine approaches for heart disease.
Abstract:
A growing body of evidence has shown that the heart is not terminally differentiated but continues to renew its cardiomyocytes even after the neonatal period. This new view of the heart increases hope for changing the strategy for treating cardiac injuries toward regenerative approaches. However, the magnitude and clinical significance of this process in homeostasis and disease and the underlying cellular and molecular mechanisms have been heavily debated. Numerous candidates for so-called cardiac stem cells (CSCs) have been proposed, but the different characteristics of these candidates make it difficult to identify the inherent source of regeneration. In this review, we revisit the field of cardiac stem cells and endogenous regeneration to elaborate how these fields may contribute to future regenerative strategies.
