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3D-printed bioactive scaffolds from nanosilicates and PEOT/PBT for bone tissue engineering

Regenerative Biomaterials 2019年第1期6卷 29-37页

作者： James k.Carrow Andrea Di Luca Alireza Dolatshahi-Pirouz Lorenzo Moroni akhilesh k.gaharwar Department of Biomedical Engineering Texas A&M UniversityCollege StationTX 77843USA Tissue Regeneration Department MIRA Institute for Biomedical Technology and Technical MedicineUniversity of TwenteEnschedeThe Netherlands DTU Nanotech Center for Intestinal Absorption and Transport of BiopharmaceuticalsTechnical University of Denmark2800 KgsLyngbyDenmark Department of Complex Tissue Regeneration MERLN Institute for Technology-Inspired Regenerative MedicineMaastricht UniversityUniversiteitsingel 406229ER MaastrichtThe Netherlands Department of Materials Science Texas A&M UniversityCollege StationTX 77843USA Center for Remote Health Technologies and Systems Texas A&M UniversityCollege StationTX 77843USA

Additive manufacturing(AM)has shown promise in designing 3D scaffold for regenerative ***,many synthetic biomaterials used for AM are ***,we report synthesis of bioactive nanocomposites from a poly(ethylene oxide terephthalate)(PEOT)/poly(butylene terephthalate)(PBT)(PEOT/PBT)copolymer and 2D nanosilicates for fabricating 3D scaffolds for bone tissue ***/PBT have been shown to support calcification and bone bonding ability in vivo,while 2D nanosilicates induce osteogenic differentiation of human mesenchymal stem cells(hMSCs)in absence of osteoinductive *** effect of nanosilicates addition to PEOT/PBT on structural,mechanical and biological properties is ***,the addition of nanosilicate to PEOT/PBT improves the stability of nanocomposites in physiological conditions,as nanosilicate suppressed the degradation rate of ***,no significant increase in the mechanical stiffness of scaffold due to the addition of nanosilicates is *** addition of nanosilicates to PEOT/PBT improves the bioactive properties of AM nanocomposites as demonstrated in *** readily proliferated on the scaffolds containing nanosilicates and resulted in significant upregulation of osteo-related proteins and production of mineralized *** synergistic ability of nanosilicates and PEOT/PBT can be utilized for designing bioactive scaffolds for bone tissue engineering.

关键词： 3D printing nanocomposites two dimensional(2D)nanoparticles copolymer tissue engineering

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