PUBLICATION
Regeneration of cryoinjury induced necrotic heart lesions in zebrafish is associated with epicardial activation and cardiomyocyte proliferation
- Authors
- Schnabel, K., Wu, C.C., Kurth, T., and Weidinger, G.
- ID
- ZDB-PUB-110519-18
- Date
- 2011
- Source
- PLoS One 6(4): e18503 (Journal)
- Registered Authors
- Schnabel, Kristin, Weidinger, Gilbert
- Keywords
- none
- MeSH Terms
-
- Animals
- Pericardium/pathology*
- Cold Temperature*
- Heart Diseases/physiopathology*
- Myocardium/pathology*
- Zebrafish
- Regeneration*
- Cell Proliferation*
- PubMed
- 21533269 Full text @ PLoS One
Citation
Schnabel, K., Wu, C.C., Kurth, T., and Weidinger, G. (2011) Regeneration of cryoinjury induced necrotic heart lesions in zebrafish is associated with epicardial activation and cardiomyocyte proliferation. PLoS One. 6(4):e18503.
Abstract
In mammals, myocardial cell death due to infarction results in scar formation and little regenerative response. In contrast, zebrafish have a high capacity to regenerate the heart after surgical resection of myocardial tissue. However, whether zebrafish can also regenerate lesions caused by cell death has not been tested. Here, we present a simple method for induction of necrotic lesions in the adult zebrafish heart based on cryoinjury. Despite widespread tissue death and loss of cardiomyocytes caused by these lesions, zebrafish display a robust regenerative response, which results in substantial clearing of the necrotic tissue and little scar formation. The cellular mechanisms underlying regeneration appear to be similar to those activated in response to ventricular resection. In particular, the epicardium activates a developmental gene program, proliferates and covers the lesion. Concomitantly, mature uninjured cardiomyocytes become proliferative and invade the lesion. Our injury model will be a useful tool to study the molecular mechanisms of natural heart regeneration in response to necrotic cell death.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping