Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Gamma Irradiation Processing on 3D PCL Devices - A Preliminary Biocompatibility Assessment

Fernando Guedes
,
Mariana V. Branquinho
ORCID logo ,
Sara Biscaia
ORCID logo ,
Rui D. Alvites
ORCID logo ,
Ana C. Sousa
ORCID logo ,
Bruna Lopes
ORCID logo ,
Patrícia Sousa
ORCID logo ,
Alexandra Rêma
,
Irina Amorim
,
Fátima Faria
,
Tatiana M. Patrício
ORCID logo ,
António Bugalho
,
Nuno Alves
ORCID logo ,
Ana C. Maurício
* ORCID logo
Version 1 : Received: 14 October 2022 / Approved: 14 October 2022 / Online: 14 October 2022 (03:43:22 CEST)

A peer-reviewed article of this Preprint also exists.

Guedes, F.; Branquinho, M.V.; Biscaia, S.; Alvites, R.D.; Sousa, A.C.; Lopes, B.; Sousa, P.; Rêma, A.; Amorim, I.; Faria, F.; Patrício, T.M.; Alves, N.; Bugalho, A.; Maurício, A.C. Gamma Irradiation Processing on 3D PCL Devices—A Preliminary Biocompatibility Assessment. Int. J. Mol. Sci. 2022, 23, 15916. Guedes, F.; Branquinho, M.V.; Biscaia, S.; Alvites, R.D.; Sousa, A.C.; Lopes, B.; Sousa, P.; Rêma, A.; Amorim, I.; Faria, F.; Patrício, T.M.; Alves, N.; Bugalho, A.; Maurício, A.C. Gamma Irradiation Processing on 3D PCL Devices—A Preliminary Biocompatibility Assessment. Int. J. Mol. Sci. 2022, 23, 15916.

Abstract

Additive manufacturing or 3D printing applying polycaprolactone-(PCL)-based medical devices represents an important branch of tissue engineering, where the sterilization method is a key process for further safe application in vitro and in vivo. In this study, the authors intend to access the most suitable gamma radiation conditions to sterilize PCL-based scaffolds in a preliminary biocompatibility assessment, envisioning future studies for airway obstruction conditions. Three radiation levels were considered, 25 kGy, 35 kGy and 45 kGy and evaluated as to their cyto- and biocompatibility. All three groups presented biocompatible properties, indicating an adequate sterility condition. As for the cytocompatibility analysis, devices sterilized by 35 kGy and 45 kGy showed better results, with the 45 kGy showing overall improved outcomes. This study allowed to select the most suitable sterilization condition for PCL-based scaffolds, aiming at immediate future assays, by applying 3D-customized printing techniques to specific airway obstruction lesions of the trachea.

Keywords

gamma irradiation; 3D polycaprolactone; mesenchymal stem cells; cytocompatibility; biocompatibility.

Subject

Biology and Life Sciences, Biology and Biotechnology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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