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- W2968334695 abstract "Rationale: Adult myocardium contains a rare population of cardiac progenitor cells (CPCs), recruited in response to tissue injury, which are of central importance for the cardiac microenvironment after cardiac injury. However, their phenotype characterization and function in physiological and pathological has not yet been reported. Objective: Based on the identification of a cell population with very high expression of PW1 in different tissues, our goal was to determine the role that PW1+ cells play in the heart in a murine myocardial infarction model. Methods and Results: In this study we show that high expression of PW1 in cardiac cells (PW1+ cells), identified a rare population, located in the epicardium and interstitium in resting heart, increased in the injured and border area in response to myocardial infarction (MI). Using PW1-reporter mice, we defined three populations of CPCs that include fraction I (PW1-ckit+), II (PW1+ c-kit+) and III (PW1+ckit-) based on differential expression of PW1 and c-kit. We found that MI led to an increase of all the fractions especially fraction II. Furthermore, isolated PW1+ cells showed clonogenic capacity, measured as fibroblastic colony-forming units frequency, and differentiation capacity to give rise in vitro to several cardiac lineages. The phenotypic characterization of fractions I, II and III has also been studied by utilizing comparative gene expression profile as a screening tool. Taken together, these data identify a novel PW1+ cardiac progenitor population with the potential to undergo differentiation into multiple cardiac lineages, suggesting their involvement in cardiac repair in normal and pathological conditions. Conclusion: Based on the comparative phenotype analysis, we could demonstrate that the expression of PW1 identified a pure population of CPCs, augmented following MI, with clonogenic and multipotent capacity, which is likely to provide a novel target for therapeutic approaches aimed at improving cardiac repair." @default.
- W2968334695 created "2019-08-22" @default.
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- W2968334695 date "2015-11-10" @default.
- W2968334695 modified "2023-10-17" @default.
- W2968334695 title "Abstract 15068: Expression of PW1 Identifies a New Candidate Cardiac Progenitor Population in the Adult Heart" @default.
- W2968334695 doi "https://doi.org/10.1161/circ.132.suppl_3.15068" @default.
- W2968334695 hasPublicationYear "2015" @default.
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