Comparison of the Biological Behaviour of Human Dermal Fibroblasts seeded on 3D Printed Polylactic acid, Polycaprolactone and Polyethylene Terephthalate Scaffolds in vitro

Year 2021, Volume: 3 Issue: 1, 7 - 13, 07.07.2021

Ufkay Karabay R. Bugra Husemoglu Mehtap Yuksel Egrılmez Selma Aydemir Başak Baykara Serhat Cagiral Hasan Havıtçıoğlu

https://doi.org/10.51934/jomit.957164

Cited By: 1

Abstract

Regenerative medicine is a scientific field that improves and repairs diseased and injured tissues. Three-dimensional (3D) printing is an innovative technology that provides a new application field for regenerative medicine. 3D printed scaffolds by programming pore sizes and shapes serve as a temporary basis for cells until the natural extracellular matrix (ECM) is reconstructed. Dermal fibroblasts are mesenchymal cells located in the dermal skin layer that produce and organize ECM components. They play an essential role in skin wound healing and fibrosis. The aim of this study is to analyze the viability, adhesion, distribution, and collagen IV expression of human dermal fibroblasts (HDFs) seeded on 3D printed polylactic acid (PLA), polyethylene terephthalate (PET), and poly-ε-caprolactone (PCL) scaffolds in vitro. HDFs were seeded on scaffolds or tissue culture plastic plates as control and were cultured for 1 and 3 days. 3D PLA, PCL, and PET scaffolds were prepared using a custom made fused deposition modeling printer. The cell viability was measured by WST-1 assay on days 1 and 3. The cell adhesion was evaluated by scanning electron microscopy (SEM). The distribution was analyzed by hematoxylin and eosin (H&E) staining. Collagen IV expression was analyzed by immunohistochemical (IHC) staining. On day 1, the viability of HDFs on the 3D PLA scaffolds was significantly higher than PCL scaffolds. On day 3, the viability of HDFs on 3D PLA and PET scaffolds was significantly higher than PCL scaffolds. SEM images showed that HDFs on 3D PLA scaffolds attached the surfaces, filled the interfiber gaps and maintained their tissue specific morphology on day 3 compared to PCL and PET scaffolds. Histological images stained with H&E demonstrated that the distribution of HDFs on 3D PLA scaffolds was uniform on days 1 and 3. Collagen IV staining was more intense in HDFs on 3D PLA scaffolds on days 1 and 3. This study shows that 3D PLA scaffolds create a appropriate environment for cell viability, adhesion, distribution and may provide a high advantage in skin tissue regeneration.

Keywords

Human dermal fibroblasts, 3D printed scaffolds, Skin tissue regeneration

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