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Recapitulation of developmental cardiogenesis governs the morphological and functional regeneration of adult newt hearts following injury.
Witman, Nevin; Murtuza, Bari; Davis, Ben; Arner, Anders; Morrison, Jamie Ian.
Afiliação
  • Witman N; Molecular Biology and Functional Genomics, Stockholm University, Svante Arrheniusväg 20C, Stockholm, Sweden.
Dev Biol ; 354(1): 67-76, 2011 Jun 01.
Article em En | MEDLINE | ID: mdl-21457708
ABSTRACT
Urodele amphibians, like the newt, are the "champions of regeneration" as they are able to regenerate many body parts and tissues. Previous experiments, however, have suggested that the newt heart has only a limited regeneration capacity, similar to the human heart. Using a novel, reproducible ventricular resection model, we show for the first time that adult newt hearts can fully regenerate without any evidence of scarring. This process is governed by increased proliferation and the up-regulation of cardiac transcription factors normally expressed during developmental cardiogenesis. Furthermore, we are able to identify cells within the newly regenerated regions of the myocardium that express the LIM-homeodomain protein Islet1 and GATA4, transcription factors found in cardiac progenitors. Information acquired from using the newt as a model organism may help to shed light on the regeneration deficits demonstrated in damaged human hearts.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Regeneração / Salamandridae / Coração / Traumatismos Cardíacos Tipo de estudo: Prognostic_studies Limite: Animals Idioma: En Ano de publicação: 2011 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Regeneração / Salamandridae / Coração / Traumatismos Cardíacos Tipo de estudo: Prognostic_studies Limite: Animals Idioma: En Ano de publicação: 2011 Tipo de documento: Article