Regeneration of cryoinjury induced necrotic heart lesions in zebrafish is associated with epicardial activation and cardiomyocyte proliferation

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

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.

Details

OriginalspracheEnglisch
Aufsatznummere18503
FachzeitschriftPloS one
Jahrgang6
Ausgabenummer4
PublikationsstatusVeröffentlicht - 12 Apr. 2011
Peer-Review-StatusJa

Externe IDs

PubMedCentral PMC3075262
Scopus 79954522898
ORCID /0000-0001-5624-1717/work/142239032

Schlagworte

Schlagwörter

  • Animals, Cell Proliferation, Cold Temperature, Heart Diseases/physiopathology, Myocardium/pathology, Pericardium/pathology, Regeneration, Zebrafish