Journal
BIOMATERIALS
Volume 104, Issue -, Pages 52-64Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biomaterials.2016.06.062
Keywords
Extracellular matrix; Decellularization; 3D scaffolds; Fetal microenvironments; Cardiac tissue engineering
Funding
- FEDER- Fundo Europeu de Desenvolvimento Regional funds through the COMPETE
- Portuguese funds through FCT - Fundacao para a Ciencia e a Tecnologia/Ministerio da Ciencia, Tecnologia e Inovacao in the framework of the project Institute for Research and Innovation in Health Sciences [POCI-01-0145FEDER-007274, SFRH/BD/88780/2012, BI-PTDC/SAU-ORG/118297/2010, SFRH/BPD/ 78187/2011, SFRH/BPD/80588/2011, SFRH/BD/ 111799/2015]
- Institut Pasteur, Paris, France
- [PTDC/SAUORG/118297/2010]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/88780/2012, PTDC/SAU-ORG/118297/2010, SFRH/BD/111799/2015, SFRH/BPD/78187/2011] Funding Source: FCT
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A main challenge in cardiac tissue engineering is the limited data on microenvironmental cues that sustain survival, proliferation and functional proficiency of cardiac cells. The aim of our study was to evaluate the potential of fetal (E18) and adult myocardial extracellular matrix (ECM) to support cardiac cells. Acellular three-dimensional (3D) bioscaffolds were obtained by parallel decellularization of fetal and adult-heart explants thereby ensuring reliable comparison. Acellular scaffolds retained main constituents of the cardiac ECM including distinctive biochemical and structural meshwork features of the native equivalents. In vitro, fetal and adult ECM-matrices supported 3D culture of heart-derived Sca-1(+) progenitors and of neonatal cardiomyocytes, which migrated toward the center of the scaffold and displayed elongated morphology and excellent viability. At the culture end-point, more Sca-1(+) cells and cardiomyocytes were found adhered and inside fetal bioscaffolds, compared to the adult. Higher repopulation yields of Sca-1(+) cells on fetal ECM relied on beta 1-integrin independent mitogenic signals. Sca-1(+) cells on fetal bioscaffolds showed a gene expression profile that anticipates the synthesis of a permissive microenvironment for cardiomyogenesis. Our findings demonstrate the superior potential of the 3D fetal microenvironment to support and instruct cardiac cells. This knowledge should be integrated in the design of next-generation biomimetic materials for heart repair. (C) 2016 Elsevier Ltd. All rights reserved.
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