Bone defect repair remains a troubling problem in clinical orthopedics, which involves complex biolog-ical processes. Calcium phosphates (CaPs) have been widely used owing to their advantage of biocom-patibility. However, single component and traditional fabrication methods cannot meet the requirements of bioadaptability during the tissue repair process. In this work, 0%, 5%, 15%, 25% wt% of BG-TCP (bioac-tive glass-$-tricalcium phosphate) bioresorbable scaffolds with triply-periodic minimal surfaces (TPMS)-gyroid structure were prepared by the stereolithography (SLA) technology. TPMS-gyroid structure pro-vided an accurate mimicry of natural bone tissue, and the incorporation of BG improved the compressive strength of $-TCP matrix, matched with the defective bone (2-12 MPa). Rapid but tunable degradation kinetics (compared with pure TCP) of BG enabled the BG-TCP system to sh8ow adaptable biodegradabil-ity to new bone generation. In vitro studies have shown that composite scaffolds have better mechanical properties (7.82 MPa), and can released appropriate contents of calcium, phosphorous, and magnesium ions, which promoted the osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs) and angiogenic ability of endothelial progenitor cells (EPCs). Moreover, the in vivo assessment of rat femoral defect revealed that TPMS-structure-based TCP scaffolds accelerated bone ingrowth to the pores. Moreover, BG-TCP scaffolds, especially 15BG-TCP group, exhibited superior bone regeneration capacity at both 4 and 8 weeks, which achieved an optimal match between the rate of material degradation and tissue regeneration. In summary, this study provides insight into influences of bioactive components (BG) and bionic structures (TPMS) on the physical-chemical properties of materials, cell behavior and tissue regeneration, which offers a promising strategy to design bioadaptive ceramic scaffolds in the clinical treatment of bone defects.(c) 2023 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
基金:
National Key Research and Development Program of China [2022YFB4601402]; National Natural Science Foundation of China [32201109, 51772233]; Guangdong Basic and Applied Basic Research Foundation [2022B1515120052, 2021A1515110557]; Key Basic Research Program of Shenzhen [JCYJ20200109150218836]; Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory [HJL202202A002]
第一作者单位:[1]Wuhan Univ Technol, Biomed Mat & Engn Res Ctr Hubei Prov, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
共同第一作者:
通讯作者:
通讯机构:[1]Wuhan Univ Technol, Biomed Mat & Engn Res Ctr Hubei Prov, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China[4]Foshan Xianhu Lab Adv Energy Sci, Technol Guangdong Lab, Foshan 528200, Peoples R China
推荐引用方式(GB/T 7714):
Li Meng,Jiang Jiawei,Liu Wenbin,et al.Bioadaptable bioactive glass-$-tricalcium phosphate scaffolds with TPMS-gyroid structure by stereolithography for bone regeneration[J].JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY.2023,155:54-65.doi:10.1016/j.jmst.2023.01.025.
APA:
Li, Meng,Jiang, Jiawei,Liu, Wenbin,Huang, Xiaolong,Wu, Xiaopei...&Dai, Honglian.(2023).Bioadaptable bioactive glass-$-tricalcium phosphate scaffolds with TPMS-gyroid structure by stereolithography for bone regeneration.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,155,
MLA:
Li, Meng,et al."Bioadaptable bioactive glass-$-tricalcium phosphate scaffolds with TPMS-gyroid structure by stereolithography for bone regeneration".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 155.(2023):54-65