Human cardiac progenitor cell grafts as unrestricted source of supernumerary cardiac cells in healthy murine hearts
| Autor: | M. Ribezzo, Eugenio Magnani, Teruo Okano, Cristina Giacinti, Maria Prat, Enrico Traversa, Mauro Rinaldi, Stefania Pagliari, Stefano Pietronave, Francesca Pagliari, Antonio Musarò, Giancarlo Forte, Carmine Nicoletti, Andrea Zamperone, Marilena Minieri, Giorgia Nardone, Chiara Comoglio, Paolo Di Nardo |
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| Rok vydání: | 2011 |
| Předmět: |
Male
Settore MED/09 - Medicina Interna Heart Ventricles Population cardiac progenitor cells Biology Extracellular matrix cardiac tissue engineering engineered tissue Mice In vivo Cell Movement Animals Humans Myocytes Cardiac Progenitor cell education Aged Aged 80 and over cardiac regeneration cell sheet technology education.field_of_study Tissue Engineering Gene Expression Profiling Myocardium Stem Cells Cell Differentiation Cell Biology Anatomy Middle Aged In vitro Coculture Techniques Cell biology Endothelial stem cell Mice Inbred C57BL Phenotype Apoptosis Tissue Transplantation Molecular Medicine Female Stem cell Developmental Biology |
| Zdroj: | Stem cells (Dayton, Ohio). 29(12) |
| ISSN: | 1549-4918 |
| Popis: | Human heart harbors a population of resident progenitor cells that can be isolated by stem cell antigen-1 antibody and expanded in culture. These cells can differentiate into cardiomyocytes in vitro and contribute to cardiac regeneration in vivo. However, when directly injected as single cell suspension, less than 1%-5% survive and differentiate. Among the major causes of this failure are the distressing protocols used to culture in vitro and implant progenitor cells into damaged hearts. Human cardiac progenitors obtained from the auricles of patients were cultured as scaffoldless engineered tissues fabricated using temperature-responsive surfaces. In the engineered tissue, progenitor cells established proper three-dimensional intercellular relationships and were embedded in self-produced extracellular matrix preserving their phenotype and multipotency in the absence of significant apoptosis. After engineered tissues were leant on visceral pericardium, a number of cells migrated into the murine myocardium and in the vascular walls, where they integrated in the respective textures. The study demonstrates the suitability of such an approach to deliver stem cells to the myocardium. Interestingly, the successful delivery of cells in murine healthy hearts suggests that myocardium displays a continued cell cupidity that is strictly regulated by the limited release of progenitor cells by the adopted source. When an unregulated cell source is added to the system, cells are delivered to the myocardium. The exploitation of this novel concept may pave the way to the setup of new protocols in cardiac cell therapy. |
| Databáze: | OpenAIRE |
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