Direct extrusion of individually encapsulated endothelial and smooth muscle cells mimicking blood vessel structures and vascular native cell alignment
Autor/a
Bosch-Rué, Elia
Delgado, Luis M.
Gil Mur, Francisco Javier
Pérez Antoñanzas, Roman
Data de publicació
2020ISSN
1758-5082
Resum
Cardiovascular diseases (CVDs) are considered the principal cause of worldwide death, being atherosclerosis the main etiology. Up to now, the predominant treatment for CVDs has been bypass surgery from autologous source. However, due to previous harvest or the type of disease, this is not always an option. For this reason, tissue engineered blood vessels (TEBV) emerged as an alternative graft source for blood vessel replacement. In order to develop a TEBV, it should mimic the architecture of a native blood vessel encapsulating the specific vascular cells in their respective layers with native alignment, and with appropriate mechanical stability. Here, we propose the extrusion of two different cell encapsulating hydrogels, mainly alginate and collagen, and a sacrificial polymer, through a triple coaxial nozzle, which in contact with a crosslinking solution allows the formation of bilayered hollow fibers, mimicking the architecture of native blood vessels. Prior to extrusion, the innermost cell encapsulating hydrogel was loaded with human umbilical vein endothelial cells (HUVECs), whereas the outer hydrogel was loaded with human aortic smooth muscle cells (HASMCs). The size of the TEVB could be controlled by changing the injection speed, presenting homogeneity between the constructs. The obtained structures were robust, allowing its manipulation as well as the perfusion of liquids. Both cell types presented high rates of survival after the extrusion process as well as after 20 d in culture (over 90%). Additionally, a high percentage of HASMC and HUVEC were aligned perpendicular and parallel to the TEBV, respectively, in their own layers, resembling the physiological arrangement found in vivo. Our approach enables the rapid formation of TEBV-like structures presenting high cell viability and allowing proliferation and natural alignment of vascular cells.
Tipus de document
Article
Versió del document
Versió publicada
Llengua
English
Matèries (CDU)
61 - Medicina
Paraules clau
Vasos sanguinis
Sistema cardiovascular -- Malalties
Aterosclerosi
Cirurgia
Vasos sanguíneos
Aparato circulatorio -- Enfermedades
Aterosclerosis
Cirugía
Blood -- vessels
Cardiovascular system -- Diseases
Atherosclerosis
Surgery
Pàgines
15
Publicat per
IOP Science
Col·lecció
13;
Publicat a
Biofabrication
Citació
Bosch-Rué, E.; Delgado, Luis M.; Gil Mur, Francisco Javier [et al.]. Direct extrusion of individually encapsulated endothelial and smooth muscle cells mimicking blood vessel structures and vascular native cell alignment. Biofabrication, 2020, 13, 015003. Disponible en: <https://iopscience.iop.org/article/10.1088/1758-5090/abbd27#references>. Fecha de acceso: 25 feb. 2021. DOI: 10.1088/1758-5090/abbd27
Número de l'acord de la subvenció
info:eu-repo/grantAgreement/ES/2PE/RTI2018-096088-J-100
Aquest element apareix en la col·lecció o col·leccions següent(s)
- Ciències de la Salut [740]
Drets
Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Excepte que s'indiqui una altra cosa, la llicència de l'ítem es descriu com https://creativecommons.org/licenses/by/4.0/