title: Cell adhesion on zein films under shear stress field.
abstract: Vascular implants after implantation need to improve the ability of cells to withstand flow-shear stress. As such, we want to test whether zein films could improve the flow-shear stress resistance of cells by control of their surface morphology. We chose Collagen, poly L-lactic acid (PLLA) and three types of zein as the coating films and evaluated the flow-shear stress resistance of NIH3T3, and EA.hy926 on these respective films. The results showed that the retention of two cell lines on Collagen film was better than PLLA and zein films. The cell retention of EA.hy926 on Zein 3 film with higher roughness was better than Zein 1 film with a flat surface in the first 2h. The cell retention of NIH3T3 on a rougher surface was always better than the smoother one under flow-shear stress condition for 6h. Observation of cell morphologies showed that the aspect ratio changed significantly for NIH3T3 cells upon flow-shear stress condition, as shown by reduced numbers of pseudopodia, increased cell rounding and shrinkage. Zein 3 film with higher roughness improved the flow-shear stress resistance of cells and might be used in vascular implant coatings.
authors.affiliation: School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
authors.forename: Yi-Long
authors.initials: YL
authors.lastname: Han
authors.affiliation: School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
authors.forename: Qin
authors.initials: Q
authors.lastname: Xu
authors.affiliation: Department of Cardio-thoracic Surgery, Shanghai No. 6 People Hospital, Affiliated Shanghai Jiao Tong University, Shanghai 200233, China.
authors.forename: Zhiqian
authors.initials: Z
authors.lastname: Lu
authors.affiliation: School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. Electronic address: jinyewang@sjtu.edu.cn.
authors.forename: Jin-Ye
authors.initials: JY
authors.lastname: Wang
mesh_terms: D000818:Animals; D002448:Cell Adhesion / Q000187:drug effects; D048430:Cell Shape / Q000187:drug effects; D003094:Collagen / Q000494:pharmacology; D005347:Fibroblasts / Q000166:cytology* / Q000187:drug effects; D061307:Human Umbilical Vein Endothelial Cells / Q000166:cytology* / Q000187:drug effects; D006801:Humans; D019344:Lactic Acid / Q000494:pharmacology; D051379:Mice; D018625:Microscopy, Atomic Force; D041681:NIH 3T3 Cells; D011091:Polyesters; D011108:Polymers / Q000494:pharmacology; D013314:Stress, Mechanical; D015028:Zein / Q000737:chemistry / Q000494:pharmacology* / Q000648:ultrastructure
chemical_list: D011091:Polyesters; D011108:Polymers; D019344:Lactic Acid; C033616:poly(lactide); D003094:Collagen; D015028:Zein
keywords: Cell retention; EA.hy926; Flow-shear stress; NIH3T3; Resistance; Zein