3D biodegradable scaffolds of polycaprolactone with silicate-containing hydroxyapatite microparticles for bone tissue engineering

• Verfasst von: Shkarina, Svetlana [VerfasserIn]
• Verfasst von: Weinhardt, Venera [VerfasserIn]
• Titel: 3D biodegradable scaffolds of polycaprolactone with silicate-containing hydroxyapatite microparticles for bone tissue engineering
• Titelzusatz: high-resolution tomography and in vitro study
• Verf.angabe: Svetlana Shkarina, Roman Shkarin, Venera Weinhardt, Elizaveta Melnik, Gabriele Vacun, Petra J. Kluger, Kateryna Loza, Matthias Epple, Sergei I. Ivlev, Tilo Baumbach, Maria A. Surmeneva & Roman A. Surmenev
• E-Jahr: 2018
• Jahr: 11 June 2018
• Umfang: 13 S.
• Fussnoten: Gesehen am 18.09.2019
• Titel Quelle: Enthalten in: Scientific reports
• Ort Quelle: [London] : Macmillan Publishers Limited, part of Springer Nature, 2011
• Jahr Quelle: 2018
• Band/Heft Quelle: 8(2018) Artikel-Nummer 8907, 13 Seiten
• ISSN Quelle: 2045-2322
• DOI: doi:10.1038/s41598-018-27097-7
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1677257717

Abstract

To date, special interest has been paid to composite scaffolds based on polymers enriched with hydroxyapatite (HA). However, the role of HA containing different trace elements such as silicate in the structure of a polymer scaffold has not yet been fully explored. Here, we report the potential use of silicate-containing hydroxyapatite (SiHA) microparticles and microparticle aggregates in the predominant range from 2.23 to 12.40 µm in combination with polycaprolactone (PCL) as a hybrid scaffold with randomly oriented and well-aligned microfibers for regeneration of bone tissue. Chemical and mechanical properties of the developed 3D scaffolds were investigated with XRD, FTIR, EDX and tensile testing. Furthermore, the internal structure and surface morphology of the scaffolds were analyzed using synchrotron X-ray µCT and SEM. Upon culturing human mesenchymal stem cells (hMSC) on PCL-SiHA scaffolds, we found that both SiHA inclusion and microfiber orientation affected cell adhesion. The best hMSCs viability was revealed at 10 day for the PCL-SiHA scaffolds with well-aligned structure (~82%). It is expected that novel hybrid scaffolds of PCL will improve tissue ingrowth in vivo due to hydrophilic SiHA microparticles in combination with randomly oriented and well-aligned PCL microfibers, which mimic the structure of extracellular matrix of bone tissue.