A 3-D model of coronary vessel development.
Coronary vascular disease is one of the leading causes of mortality and morbidity in the United States. Therefore, a mechanistic understanding of coronary vessel morphogenesis would aid in the innovation of new therapies targeting vascular disorders. Moreover, a functionally equivalent in vitro model system allows for the delineation of the molecular mechanisms that regulate coronary vessel development. In this study, we present a novel in vitro model system. This three-dimensional (3-D) model system consists of a tubular scaffold, which is engineered from type-I collagen and has been optimized to support the growth of embryonic cardiac tissues. In this report, proepicardial (PE) cells, the developmental precursors of coronary vessels, have been isolated from several model species and cultured on this scaffold. In this model system, the PE cells were able to recapitulate several aspects of coronary vessel morphogenesis including epicardial formation, the epicardial to mesenchymal transformation, and de novo coronary vessel development or vasculogenesis. The differentiation of PE cells was characterized using a variety of specific protein markers. The potential uses of this novel coronary developmental model are discussed.
Nesbitt
Tresa L
TL
Department of Cell and Developmental Biology and Anatomy, University of South Carolina School of Medicine, Columbia, SC 29209, USA.
Patel
Payal A
PA
Yost
Michael J
MJ
Goodwin
Richard L
RL
Potts
Jay D
JD
D000818:Animals; D018929:Cell Culture Techniques; D002454:Cell Differentiation; D002642:Chick Embryo; D024042:Collagen Type I / Q000378:metabolism; D003331:Coronary Vessels / Q000166:cytology* / Q000196:embryology* / Q000254:growth & development; D005455:Fluorescent Antibody Technique; D051379:Mice; D008855:Microscopy, Electron, Scanning; D010496:Pericardium / Q000166:cytology* / Q000196:embryology* / Q000378:metabolism; D051381:Rats
D024042:Collagen Type I