Fibrogenic Potential of PW1/Peg3 Expressing Cardiac Stem Cells.
J Am Coll Cardiol
; 70(6): 728-741, 2017 Aug 08.
Article
en En
| MEDLINE
| ID: mdl-28774379
ABSTRACT
BACKGROUND:
Pw1 gene expression is a marker of adult stem cells in a wide range of tissues. PW1-expressing cells are detected in the heart but are not well characterized.OBJECTIVES:
The authors characterized cardiac PW1-expressing cells and their cell fate potentials in normal hearts and during cardiac remodeling following myocardial infarction (MI).METHODS:
A human cardiac sample was obtained from a patient presenting with reduced left ventricular (LV) function following a recent MI. The authors used the PW1nLacZ+/- reporter mouse to identify, track, isolate, and characterize PW1-expressing cells in the LV myocardium in normal and ischemic conditions 7 days after complete ligature of the left anterior descending coronary artery.RESULTS:
In both human and mouse ischemic hearts, PW1 expression was found in cells that were mainly located in the infarct and border zones. Isolated cardiac resident PW1+ cells form colonies and have the potential to differentiate into multiple cardiac and mesenchymal lineages, with preferential differentiation into fibroblast-like cells but not into cardiomyocytes. Lineage-tracing experiments revealed that PW1+ cells differentiated into fibroblasts post-MI. Although the expression of c-Kit and PW1 showed little overlap in normal hearts, a marked increase in cells coexpressing both markers was observed in ischemic hearts (0.1 ± 0.0% in control vs. 5.7 ± 1.2% in MI; p < 0.001). In contrast to the small proportion of c-Kit+/PW1- cells that showed cardiogenic potential, c-Kit+/PW1+ cells were fibrogenic.CONCLUSIONS:
This study demonstrated the existence of a novel population of resident adult cardiac stem cells expressing PW1+ and their involvement in fibrotic remodeling after MI.Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
ARN
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Función Ventricular Izquierda
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Remodelación Ventricular
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Factores de Transcripción de Tipo Kruppel
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Células Madre Mesenquimatosas
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Infarto del Miocardio
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Miocardio
Tipo de estudio:
Prognostic_studies
Límite:
Animals
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Humans
Idioma:
En
Revista:
J Am Coll Cardiol
Año:
2017
Tipo del documento:
Article
País de afiliación:
Francia