Premium
Construction of Small‐Diameter Vascular Graft by Shape‐Memory and Self‐Rolling Bacterial Cellulose Membrane
Author(s) -
Li Ying,
Jiang Kai,
Feng Jian,
Liu Jinzhe,
Huang Rong,
Chen Zhaojun,
Yang Junchuan,
Dai Zhaohe,
Chen Yong,
Wang Nuoxin,
Zhang Wenjin,
Zheng Wenfu,
Yang Guang,
Jiang Xingyu
Publication year - 2017
Publication title -
advanced healthcare materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.288
H-Index - 90
eISSN - 2192-2659
pISSN - 2192-2640
DOI - 10.1002/adhm.201601343
Subject(s) - membrane , materials science , biomedical engineering , microfluidics , tube (container) , bacterial cellulose , blood vessel , shape memory alloy , cell , nanotechnology , cellulose , biophysics , composite material , chemistry , biology , medicine , biochemistry , organic chemistry , endocrinology
Bacterial cellulose (BC) membranes with shape‐memory properties allow the rapid preparation of artificial small‐diameter blood vessels when combined with microfluidics‐based patterning with multiple types of cells. Lyophilization of a wet multilayered rolled BC tube endows it with memory to recover its tubular shape after unrolling. The unrolling of the BC tube yields a flat membrane, and subsequent patterning with endothelial cells, smooth muscle cells, and fibroblast cells is carried out by microfluidics. The cell‐laden BC membrane is then rerolled into a multilayered tube. The different cells constituting multiple layers on the tubular wall can imitate blood vessels in vitro. The BC tubes (2 mm) without cell modification, when implanted into the carotid artery of a rabbit, maintain thrombus‐free patency 21 d after implantation. This study provides a novel strategy for the rapid construction of multilayered small‐diameter BC tubes which may be further developed for potential applications as artificial blood vessels.