Enhancing medial layer recellularization of tissue-engineered blood vessels using radial microchannels.

Abstract:

:Aim: Cell repopulation of tissue-engineered vascular grafts (TEVGs) from decellularized arterial scaffolds is limited by dense concentric tunica media layers which impede cells migrating radially between the layers. We aimed to develop and validate a new microneedle device to modify decellularized carotid arteries with radial microchannels to enhance medial layer repopulation. Material & methods: Modified decellularized porcine arteries were seeded with rat mesenchymal stem cells using either standard longitudinal injection, or a dual vacuum-perfusion bioreactor. Mechanical tests were used to assess the arterial integrity following modification. Results & conclusion: The method herein achieved radial recellularization of arteries in vitro without significant loss of mechanical integrity, Thus, we report a novel method for successful radial repopulation of decellularized carotid artery-based tissue-engineered vascular grafts.

journal_name

Regen Med

journal_title

Regenerative medicine

authors

Eufrásio-da-Silva T,Ruiz-Hernandez E,O'Dwyer J,Picazo-Frutos D,Duffy GP,Murphy BP

doi

10.2217/rme-2019-0011

subject

Has Abstract

pub_date

2019-11-01 00:00:00

pages

1013-1028

issue

11

eissn

1746-0751

issn

1746-076X

journal_volume

14

pub_type

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