Nanofibrous materials affect the reaction of cytotoxicity assays

Abstract Nanofibrous materials are widely investigated as a replacement for the extracellular matrix, the 3D foundation for cells in all tissues. However, as with every medical material, nanofibers too must pass all safety evaluations like in vitro cytotoxicity assays or in vivo animal tests. Our li...

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Main Authors: Rafał Podgórski, Michał Wojasiński, Tomasz Ciach
Format: Article
Language:English
Published: Nature Portfolio 2022-05-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-022-13002-w
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author Rafał Podgórski
Michał Wojasiński
Tomasz Ciach
author_facet Rafał Podgórski
Michał Wojasiński
Tomasz Ciach
author_sort Rafał Podgórski
collection DOAJ
description Abstract Nanofibrous materials are widely investigated as a replacement for the extracellular matrix, the 3D foundation for cells in all tissues. However, as with every medical material, nanofibers too must pass all safety evaluations like in vitro cytotoxicity assays or in vivo animal tests. Our literature research showed that differences in results of widely used cytotoxicity assays applied to evaluate nanofibrous materials are poorly understood. To better explore this issue, we prepared three nanofibrous materials with similar physical properties made of poly-L-lactic acid, polyurethane, and polycaprolactone. We tested five metabolic cytotoxicity assays (MTT, XTT, CCK-8, alamarBlue, PrestoBlue) and obtained different viability results for the same nanofibrous materials. Further, the study revealed that nanofibrous materials affect the reaction of cytotoxicity assays. Considering the results of both described experiments, it is evident that validating all available cytotoxicity assays for nanofibrous materials and possibly other highly porous materials should be carefully planned and verified using an additional analytical tool, like scanning electron microscopy or, more preferably, confocal microscopy.
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spelling doaj.art-5f535d26dcd84f8a98e404bd4a422b7f2022-12-22T00:56:19ZengNature PortfolioScientific Reports2045-23222022-05-0112111210.1038/s41598-022-13002-wNanofibrous materials affect the reaction of cytotoxicity assaysRafał Podgórski0Michał Wojasiński1Tomasz Ciach2Faculty of Chemical and Process Engineering, Department of Biotechnology and Bioprocess Engineering, Laboratory of Biomedical Engineering, Warsaw University of TechnologyFaculty of Chemical and Process Engineering, Department of Biotechnology and Bioprocess Engineering, Laboratory of Biomedical Engineering, Warsaw University of TechnologyFaculty of Chemical and Process Engineering, Department of Biotechnology and Bioprocess Engineering, Laboratory of Biomedical Engineering, Warsaw University of TechnologyAbstract Nanofibrous materials are widely investigated as a replacement for the extracellular matrix, the 3D foundation for cells in all tissues. However, as with every medical material, nanofibers too must pass all safety evaluations like in vitro cytotoxicity assays or in vivo animal tests. Our literature research showed that differences in results of widely used cytotoxicity assays applied to evaluate nanofibrous materials are poorly understood. To better explore this issue, we prepared three nanofibrous materials with similar physical properties made of poly-L-lactic acid, polyurethane, and polycaprolactone. We tested five metabolic cytotoxicity assays (MTT, XTT, CCK-8, alamarBlue, PrestoBlue) and obtained different viability results for the same nanofibrous materials. Further, the study revealed that nanofibrous materials affect the reaction of cytotoxicity assays. Considering the results of both described experiments, it is evident that validating all available cytotoxicity assays for nanofibrous materials and possibly other highly porous materials should be carefully planned and verified using an additional analytical tool, like scanning electron microscopy or, more preferably, confocal microscopy.https://doi.org/10.1038/s41598-022-13002-w
spellingShingle Rafał Podgórski
Michał Wojasiński
Tomasz Ciach
Nanofibrous materials affect the reaction of cytotoxicity assays
Scientific Reports
title Nanofibrous materials affect the reaction of cytotoxicity assays
title_full Nanofibrous materials affect the reaction of cytotoxicity assays
title_fullStr Nanofibrous materials affect the reaction of cytotoxicity assays
title_full_unstemmed Nanofibrous materials affect the reaction of cytotoxicity assays
title_short Nanofibrous materials affect the reaction of cytotoxicity assays
title_sort nanofibrous materials affect the reaction of cytotoxicity assays
url https://doi.org/10.1038/s41598-022-13002-w
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