刘勇

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教授

博士生导师

硕士生导师

性别:男

毕业院校:中科院大连化学物理研究所

学位:博士

所在单位:化工海洋与生命学院

学科:药理学. 生物医学工程. 生物化学与分子生物学

办公地点:盘锦校区F03-312B

联系方式:大连理工大学生命科学与药学学院 辽宁省盘锦市辽东湾新区大工路2号 邮编:124221 电话: 0427-2631433

电子邮箱:yliu@dlut.edu.cn

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Preparation of an Electrically Conductive Graphene Oxide/Chitosan Scaffold for Cardiac Tissue Engineering

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论文类型:期刊论文

发表时间:2019-08-01

发表刊物:APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY

收录刊物:SCIE、EI、PubMed

卷号:188

期号:4

页面范围:952-964

ISSN号:0273-2289

关键字:Cardiac tissue engineering; Cardiomyocytes; Conductive scaffolds; Chitosan; Graphene oxide

摘要:Cardiac tissue engineering is of great importance for therapeutic and pharmaceutical applications. The scaffolds that can provide electrical conductivity and structural organization will be highly beneficial for cardiac tissue engineering. Here, we developed conductive scaffolds with electrical conductivity and porous structure composed of chitosan (CS) blending with graphene oxide (GO) for cardiac tissue engineering. Our results showed that the swelling, porosity, and conductive properties of GO/CS scaffolds could be modulated via adjusting the ratio of GO to CS. More importantly, GO/CS scaffolds had a swelling ratio ranging from 23.20 to 27.38 (1000%) and their conductivity (0.134S/m) fell in the range of reported conductivities for native cardiac tissue. Furthermore, we assessed their biological activity by seeding heart H9C2 cells in GO/CS scaffolds. Our data showed that these GO/CS scaffolds exhibited good cell viability, promotion of cell attachment and intercellular network formation, and upregulation of the cardiac-specific gene and protein expression involved in muscle conduction of electrical signals (Connexin-43). Overall, it is concluded that the GO/CS scaffolds promote the properties of cardiac tissue constructs. Our findings provide a new strategy and insight in developing new scaffolds for cardiac tissue engineering.