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Li P, Li Y, Kwok T, Yang T, Liu C, Li W, Zhang X. A bi-layered membrane with micro-nano bioactive glass for guided bone regeneration. Colloids Surf B Biointerfaces 2021; 205:111886. [PMID: 34091371 DOI: 10.1016/j.colsurfb.2021.111886] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 05/27/2021] [Accepted: 05/27/2021] [Indexed: 12/21/2022]
Abstract
Guided bone regeneration (GBR) is widely used to treat oral bone defects. However, the osteogenic effects are limited by the deficiency of the available barrier membranes. In this study, a novel bi-layer membrane was prepared by solvent casting and electrospinning. The barrier layer made of poly (lactic-co-glycolic acid) (PLGA) was smooth and compact, whereas the osteogenic layer consisting of micro-nano bioactive glass (MNBG) and PLGA was rough and porous. The mineralization evaluation confirmed that apatite formed on the membranes in simulated body fluid. Immersion in phosphate-buffered saline led to the degradation of the membranes with proper pH changes. Mechanical tests showed that the bi-layered membranes have stable mechanical properties under dry and wet conditions. The bi-layered membranes have good histocompatibility, and the MNBG/PLGA layer can enhance bone regeneration activity. This was confirmed by cell culture results, expression of osteogenic genes, and immunofluorescence staining of RUNX-related transcription factor 2 and osteopontin. Therefore, the bi-layered membranes could be a promising clinical strategy for GBR surgery.
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Affiliation(s)
- Peiyi Li
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, 510000, PR China; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, 510000, PR China
| | - Yanfei Li
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, 510000, PR China; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, 510000, PR China
| | - Tszyung Kwok
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, 510000, PR China; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, 510000, PR China
| | - Tao Yang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, 510000, PR China; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, 510000, PR China
| | - Cong Liu
- Department of Biomedical Engineering, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510641, PR China; National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou, 510006, PR China
| | - Weichang Li
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, 510000, PR China; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, 510000, PR China.
| | - Xinchun Zhang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, 510000, PR China; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, 510000, PR China.
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