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Updated: Jun 28, 2025
Fabrication of a Functionalized Magnetic Bacterial Nanocellulose with Iron Oxide Nanoparticles
Published on: May 26, 2016
Effects of heterogeneous surface characteristics on hemocompatibility and cytocompatibility of bacterial
Lulu Lin1, Lin Chen2, Genqiang Chen3
1State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai, China; College of Biological Science and Medical Engineering, Donghua University, Shanghai, China; National Advanced Functional Fiber Innovation Center, Wu Jiang, Su Zhou, China; Scientific Research Base of Bacterial Nanofiber Manufacturing and Composite Technology, China Textile Engineering Society, China.
Abstract:
The surface properties of cardiovascular biomaterials play a critical role in their biological responses. Although bacterial nanocellulose (BNC) materials have exhibited potential applications in cardiovascular implants, the impact of their surface characteristics on biocompatibility has rarely been studied. This study investigated the mechanism for the biocompatibility induced by the physicochemical properties of both sides of BNC. With greater wettability and smoothness, the upper BNC surface reduced protein adsorption by 25 % compared with the lower surface. This prolonged the plasma re-calcification time by 14 % in venous blood. Further, compared with the lower BNC surface, the upper BNC surface prolonged the activated partial thromboplastin time by 5 % and 4 % in arterial and venous blood, respectively. Moreover, the lower BNC surface with lesser rigidity, higher roughness, and sparser fiber structure promoted cell adhesion. The lower BNC surface enhanced the proliferation rate of L929 and HUVECs cells by 15 % and 13 %, respectively, compared with the upper BNC surface. With lesser stiffness, the lower BNC surface upregulated the expressions of CD31 and eNOS while down-regulating the ICAM-1 expression - This promoted the proliferation of HUVECs. The findings of this study will provide valuable insights into the design of blood contact materials and cardiovascular implants.
