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Synergistic Effects of Conductive Pva/Pedot Electrospun Scaffolds and Electrical Stimulation for More Effective Neural Tissue Engineering Publisher



Babaie A1, 2 ; Bakhshandeh B3 ; Abedi A1 ; Mohammadnejad J1 ; Shabani I4 ; Ardeshirylajimi A5 ; Reza Moosavi S6 ; Amini J7 ; Tayebi L8
Authors
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Authors Affiliations
  1. 1. Department of Life Science Engineering, Faculty of New Sciences and Technology, University of Tehran, Tehran, Iran
  2. 2. Department of Chemistry and Biotechnology, Faculty of Science Engineering and Technology, Swinburne University of Technology, Hawthorn, 3122, Victoria, Australia
  3. 3. Department of Biotechnology, College of Science, University of Tehran, Tehran, Iran
  4. 4. Department of Biomedical Engineering, Amir Kabir University of Technology, Tehran, Iran
  5. 5. Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  6. 6. Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
  7. 7. Department of Mechanical Engineering, Islamic Azad University, Science and Research Branch, Tehran, Iran
  8. 8. Marquette University, School of Dentistry, Milwaukee, 53201, WI, United States

Source: European Polymer Journal Published:2020


Abstract

Fabrication and optimization of conductive scaffolds capable of inducing proper intercellular connections through electrical signals is critical for neural tissue engineering. In this research, electrospun conductive PVA (Polyvinyl alcohol)/PEDOT(poly(3,4-ethylenedioxythiophene)) scaffolds were fabricated in different compositions. Conductivity of electrospinning solutions and electrospun scaffolds were measured. Morphology and topography, mechanical properties and water contact angle of scaffolds were analyzed. Chemistry of scaffolds were studied using FTIR analysis, while biocompatibility and cellular interactions with scaffolds were tested using MTT assay and cellular attachment and spreading testing. Our results show improvements in PEDOT-containing scaffolds, in terms of physiochemical properties, and cell viability compared to pure PVA scaffolds. After optimization of scaffolds, real-time PCR analysis was used to study neural differentiation of rat mesenchymal stem cells (MSCs). Scaffold samples with and without induction of electrical stimulation are shown to upregulate β-tubulin, nestin and enolase as compared to TCP samples. Additionally, expression of nestin gene in scaffold samples with electrical stimulation was 1.5 times more significant than scaffold sample. Overall, this study shows that using PVA/PEDOT conductive scaffolds with electrical stimulation can improve cellular response and neural differentiation through mimicking the properties of native neural tissue. © 2020 Elsevier Ltd
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