10.1007/s40204-019-0111-z

Cold atmospheric plasma as a promising approach for gelatin immobilization on poly(ε-caprolactone) electrospun scaffolds

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  • Marziyeh Meghdadi1,
  • Seyed-Mohammad Atyabi2,
  • Mohamad Pezeshki-Modaress*3,
  • Shiva Irani1,
  • Zahra Noormohammadi1,
  • Mojgan Zandi4,
  1. Department of Biology, School of Basic Sciences, Sciences and Research Branch, Islamic Azad University, Tehran, IR
  2. Department of Pilot Nanobiotechnology, Pasteur Institute of Iran, Tehran, IR
  3. Burn Research Center, Iran University of Medical Sciences, Tehran, IR
  4. Department of Biomaterial, Iran Polymer and Petrochemical Institute, Tehran, IR
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Published in Issue 2019-03-27

How to Cite

Meghdadi, M., Atyabi, S.-M., Pezeshki-Modaress, M., Irani, S., Noormohammadi, Z., & Zandi, M. (2019). Cold atmospheric plasma as a promising approach for gelatin immobilization on poly(ε-caprolactone) electrospun scaffolds. Progress in Biomaterials, 8(2 (June 2019). https://doi.org/10.1007/s40204-019-0111-z
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Abstract

Abstract Poly(Ɛ-caprolactone) (PCL) is a biocompatible polymer with a high potential to be used in tissue engineering especially in tight tissues. In the current study, cold atmospheric plasma (CAP) is used as a promising method for immobilization of gelatin as a functional biomacromolecule on PCL nanofibrous substrates. The CAP surface modification leads to oxidation of chemical groups existing on the PCL surface without doing any damage to the bulk properties of biomaterials for gelatin biomacromolecule grafting. The water contact angle (WCA) of the CAP-treated surface and gelatin-grafted PCL using CAP indicates an effective increment in the hydrophilicity of the PCL surface. Also to achieve the highest levels of gelatin grafting on the PCL surface, two different grafting methods and gelatin concentration diversity are utilized in the grafting process. The immobilization of gelatin biomacromolecules onto the CAP surface-modified PCL nanofibers is investigated using scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FTIR). The gelatin-modified PCL substrates revealed uniform nanofibrous morphology with increased average fiber diameter. The results of FTIR spectra, including hydroxyl groups, NH groups, and amide II of gelatin-grafting peaks, confirm the gelatin immobilization on the surface of nanofibers. The metabolic activity of cultured mesenchymal stem cells (MSCs) on the surface-modified scaffolds is evaluated using MTT analysis ( P ≤  0.05). The results of metabolic activity and also SEM and DAPI staining observations indicate proper attachment on the surface and viability for MSCs on the surface-immobilized nanofibrous scaffolds. Therefore, CAP treatment would be an effective method for biomacromolecule immobilization on nanofibers towards the enhancement of cell behavior.
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