Human cell-derived tissue-engineered heart valve with integrated Valsalva sinuses: towards native-like transcatheter pulmonary valve replacements.
Preclinical research
Translational research
Valvular disease
Journal
NPJ Regenerative medicine
ISSN: 2057-3995
Titre abrégé: NPJ Regen Med
Pays: United States
ID NLM: 101699846
Informations de publication
Date de publication:
2019
2019
Historique:
received:
04
12
2018
accepted:
21
05
2019
entrez:
27
6
2019
pubmed:
27
6
2019
medline:
27
6
2019
Statut:
epublish
Résumé
Transcatheter valve replacement indication is currently being extended to younger and lower-risk patients. However, transcatheter prostheses are still based on glutaraldehyde-fixed xenogeneic materials. Hence, they are prone to calcification and long-term structural degeneration, which are particularly accelerated in younger patients. Tissue-engineered heart valves based on decellularized in vitro grown tissue-engineered matrices (TEM) have been suggested as a valid alternative to currently used bioprostheses, showing good performance and remodeling capacity as transcatheter pulmonary valve replacement (TPVR) in sheep. Here, we first describe the in vitro development of human cell-derived TEM (hTEM) and their application as tissue-engineered sinus valves (hTESVs), endowed with Valsalva sinuses for TPVR. The hTEM and hTESVs were systematically characterized in vitro by histology, immunofluorescence, and biochemical analyses, before they were evaluated in a pulse duplicator system under physiological pulmonary pressure conditions. Thereafter, transapical delivery of hTESVs was tested for feasibility and safety in a translational sheep model, achieving good valve performance and early cellular infiltration. This study demonstrates the principal feasibility of clinically relevant hTEM to manufacture hTESVs for TPVR.
Identifiants
pubmed: 31240114
doi: 10.1038/s41536-019-0077-4
pii: 77
pmc: PMC6572861
doi:
Types de publication
Journal Article
Langues
eng
Pagination
14Déclaration de conflit d'intérêts
Competing interestsThe authors declare no competing interests.
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