Volume 15, Issue 1 pp. 78-87
RESEARCH ARTICLE

Design and fabrication of polycaprolactone/gelatin composite scaffolds for diaphragmatic muscle reconstruction

Tina Navaei

Tina Navaei

Cellular and Molecular Research Center (CMRC), Iran University of Medical Sciences (IUMS), Tehran, Iran

Department of Tissue Engineering & Regenerative Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran

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Peiman Brouki Milan

Peiman Brouki Milan

Cellular and Molecular Research Center (CMRC), Iran University of Medical Sciences (IUMS), Tehran, Iran

Department of Tissue Engineering & Regenerative Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran

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Ali Samadikuchaksaraei

Ali Samadikuchaksaraei

Cellular and Molecular Research Center (CMRC), Iran University of Medical Sciences (IUMS), Tehran, Iran

Department of Tissue Engineering & Regenerative Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran

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Hamid Reza Davari

Hamid Reza Davari

Department of Surgery, Tehran University of Medical Sciences, Tehran, Iran

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John G. Hardy

John G. Hardy

Department of Chemistry, Lancaster University, Lancaster, UK

Materials Science Institute, Lancaster University, Lancaster, UK

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Masoud Mozafari

Corresponding Author

Masoud Mozafari

Cellular and Molecular Research Center (CMRC), Iran University of Medical Sciences (IUMS), Tehran, Iran

Department of Tissue Engineering & Regenerative Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran

Correspondence

Masoud Mozafari, PhD; Currently at: Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, University of Toronto, Toronto, ON, Canada.

Email: [email protected] and

[email protected]

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First published: 11 November 2020
Citations: 9

Abstract

Diaphragmatic wall defects caused by congenital disorders or disease remain a major challenge for physicians worldwide. Polymeric patches have been extensively explored within research laboratories and the clinic for soft tissue and diaphragm reconstruction. However, patch usage may be associated with allergic reaction, infection, granulation, and recurrence of the hernia. In this study, we designed and fabricated a porous scaffold using a combination of 3D printing and freeze-drying techniques. A 3D printed polycaprolactone (PCL) mesh was used to reinforcegelatin scaffolds, representing an advantage over previously reported examples since it provides mechanical strength and flexibility. In vitro studies showed that adherent cells were anchorage-dependent and grew as a monolayer attached to the scaffolds. Microscopic observations indicated better cell attachments for the scaffolds with higher gelatin content as compared with the PCL control samples. Tensile testing demonstrated the mechanical strength of samples was significantly greater than adult diaphragm tissue. The biocompatibility of the specimens was investigated in vivo using a subcutaneous implantation method in Bagg albino adult mice for 20 days, with the results indicating superior cellular behavior and attachment on scaffolds containing gelatin in comparison to pure PCL scaffolds, suggesting that the porous PCL/gelatin scaffolds have potential as biodegradable and flexible constructs for diaphragm reconstruction.

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