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Gokyer S, Monsef YA, Buyuksungur S, Schmidt J, Vladescu Dragomir A, Uygur S, Oto C, Orhan K, Hasirci V, Hasirci N, Yilgor P. MgCa-Based Alloys Modified with Zn- and Ga-Doped CaP Coatings Lead to Controlled Degradation and Enhanced Bone Formation in a Sheep Cranium Defect Model. ACS Biomater Sci Eng 2024; 10:4452-4462. [PMID: 38875708 PMCID: PMC11234335 DOI: 10.1021/acsbiomaterials.4c00358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2024]
Abstract
Mg-based biodegradable metallic implants are gaining increased attraction for applications in orthopedics and dentistry. However, their current applications are hampered by their high rate of corrosion, degradation, and rapid release of ions and gas bubbles into the physiological medium. The aim of the present study is to investigate the osteogenic and angiogenic potential of coated Mg-based implants in a sheep cranial defect model. Although their osteogenic potential was studied to some extent, their potential to regenerate vascularized bone formation was not studied in detail. We have studied the potential of magnesium-calcium (MgCa)-based alloys modified with zinc (Zn)- or gallium (Ga)-doped calcium phosphate (CaP) coatings as a strategy to control their degradation rate while enhancing bone regeneration capacity. MgCa and its implants with CaP coatings (MgCa/CaP) as undoped or as doped with Zn or Ga (MgCa/CaP + Zn and MgCa/CaP + Ga, respectively) were implanted in bone defects created in the sheep cranium. MgCa implants degraded faster than the others at 4 weeks postop and the weight loss was ca. 50%, while it was ca. 15% for MgCa/CaP and <10% in the presence of Zn and Ga with CaP coating. Scanning electron microscopy (SEM) analysis of the implant surfaces also revealed that the MgCa implants had the largest degree of structural breakdown of all the groups. Radiological evaluation revealed that surface modification with CaP to the MgCa implants induced better bone regeneration within the defects as well as the enhancement of bone-implant surface integration. Bone volume (%) within the defect was ca. 25% in the case of MgCa/CaP + Ga, while it was around 15% for undoped MgCa group upon micro-CT evaluation. This >1.5-fold increase in bone regeneration for MgCa/CaP + Ga implant was also observed in the histopathological examination of the H&E- and Masson's trichrome-stained sections. Immunohistochemical analysis of the bone regeneration (antiosteopontin) and neovascularization (anti-CD31) at the defect sites revealed >2-fold increase in the expression of the markers in both Ga- and Zn-doped, CaP-coated implants. Zn-doped implants further presented low inflammatory reaction, notable bone regeneration, and neovascularization among all the implant groups. These findings indicated that Ga- and Zn-doped CaP coating is an important strategy to control the degradation rate as well as to achieve enhanced bone regeneration capacity of the implants made of Mg-based alloys.
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Affiliation(s)
- Seyda Gokyer
- Department of Biomedical Engineering, Ankara University, Ankara 06830, Turkey
| | - Yanad Abou Monsef
- Anatomic Pathology Department, National Veterinary School of Toulouse, Toulouse 31300, France
| | - Senem Buyuksungur
- BIOMATEN, Center of Excellence in Biomaterials and Tissue Engineering, Middle East Technical University (METU), Ankara 06800, Turkey
| | - Jurgen Schmidt
- Gruppenleiter Elektrochemie, Prüssingstraße 27b, INNOVENT e.V. Technologieentwicklung, Jena 07745, Germany
| | - Alina Vladescu Dragomir
- 409 Atomistilor St., National Institute of R&D for Optoelectronics─INOE 2000, Magurele 77125, Romania
- Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Tomsk 634050, Russia
| | | | | | | | - Vasif Hasirci
- BIOMATEN, Center of Excellence in Biomaterials and Tissue Engineering, Middle East Technical University (METU), Ankara 06800, Turkey
| | - Nesrin Hasirci
- BIOMATEN, Center of Excellence in Biomaterials and Tissue Engineering, Middle East Technical University (METU), Ankara 06800, Turkey
- METU Department of Chemistry, Ankara 06800, Turkey
- Near East University Tissue Engineering and Biomaterials Research Center, Nicosia 99138, TRNC Mersin 10, Turkey
| | - Pinar Yilgor
- Department of Biomedical Engineering, Ankara University, Ankara 06830, Turkey
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Li S, Yang H, Qu X, Qin Y, Liu A, Bao G, Huang H, Sun C, Dai J, Tan J, Shi J, Guan Y, Pan W, Gu X, Jia B, Wen P, Wang X, Zheng Y. Multiscale architecture design of 3D printed biodegradable Zn-based porous scaffolds for immunomodulatory osteogenesis. Nat Commun 2024; 15:3131. [PMID: 38605012 PMCID: PMC11009309 DOI: 10.1038/s41467-024-47189-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 03/25/2024] [Indexed: 04/13/2024] Open
Abstract
Reconciling the dilemma between rapid degradation and overdose toxicity is challenging in biodegradable materials when shifting from bulk to porous materials. Here, we achieve significant bone ingrowth into Zn-based porous scaffolds with 90% porosity via osteoinmunomodulation. At microscale, an alloy incorporating 0.8 wt% Li is employed to create a eutectoid lamellar structure featuring the LiZn4 and Zn phases. This microstructure optimally balances high strength with immunomodulation effects. At mesoscale, surface pattern with nanoscale roughness facilitates filopodia formation and macrophage spreading. At macroscale, the isotropic minimal surface G unit exhibits a proper degradation rate with more uniform feature compared to the anisotropic BCC unit. In vivo, the G scaffold demonstrates a heightened efficiency in promoting macrophage polarization toward an anti-inflammatory phenotype, subsequently leading to significantly elevated osteogenic markers, increased collagen deposition, and enhanced new bone formation. In vitro, transcriptomic analysis reveals the activation of JAK/STAT pathways in macrophages via up regulating the expression of Il-4, Il-10, subsequently promoting osteogenesis.
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Affiliation(s)
- Shuang Li
- School of Engineering Medicine, School of Biological Science and Medical Engineering, Beihang University, 100191, Beijing, China
| | - Hongtao Yang
- School of Engineering Medicine, School of Biological Science and Medical Engineering, Beihang University, 100191, Beijing, China.
- School of Materials Science and Engineering, Peking University, 100871, Beijing, China.
| | - Xinhua Qu
- Department of Bone and Joint Surgery, Department of Orthopedics, Renji Hospital, Shanghai Jiao Tong University School of Medicine, 200001, Shanghai, China
| | - Yu Qin
- School of Materials Science and Engineering, Peking University, 100871, Beijing, China
| | - Aobo Liu
- Department of Mechanical Engineering, Tsinghua University, 100084, Beijing, China
| | - Guo Bao
- Department of Reproduction and Physiology National Research Institute for Family Planning, 100081, Beijing, China
| | - He Huang
- School of Materials Science and Engineering, Zhengzhou University, 450003, Zhengzhou, China
| | - Chaoyang Sun
- School of Engineering Medicine, School of Biological Science and Medical Engineering, Beihang University, 100191, Beijing, China
| | - Jiabao Dai
- Department of Mechanical Engineering, Tsinghua University, 100084, Beijing, China
| | - Junlong Tan
- School of Engineering Medicine, School of Biological Science and Medical Engineering, Beihang University, 100191, Beijing, China
| | - Jiahui Shi
- School of Materials Science and Engineering, Peking University, 100871, Beijing, China
| | - Yan Guan
- College of Chemistry and Molecular Engineering, Peking University, 100871, Beijing, China
| | - Wei Pan
- College of Chemistry and Molecular Engineering, Peking University, 100871, Beijing, China
| | - Xuenan Gu
- School of Engineering Medicine, School of Biological Science and Medical Engineering, Beihang University, 100191, Beijing, China
| | - Bo Jia
- Department of Mechanical Engineering, Tsinghua University, 100084, Beijing, China
| | - Peng Wen
- Department of Mechanical Engineering, Tsinghua University, 100084, Beijing, China.
| | - Xiaogang Wang
- School of Engineering Medicine, School of Biological Science and Medical Engineering, Beihang University, 100191, Beijing, China.
| | - Yufeng Zheng
- School of Materials Science and Engineering, Peking University, 100871, Beijing, China.
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Chen K, Wang Y, Tang H, Niu X, Yang H, Bai Y, Gu X, Zheng Y. Fabrication of a Nanoscale Magnesium/Copper Metal-Organic Framework on Zn-Based Guided Bone Generation Membranes for Enhancing Osteogenesis, Angiogenesis, and Bacteriostasis Properties. ACS APPLIED MATERIALS & INTERFACES 2024; 16:5648-5665. [PMID: 38267388 DOI: 10.1021/acsami.3c16970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
Recently, zinc (Zn) and its alloys have demonstrated great potential as guided bone regeneration (GBR) membranes to treat the problems of insufficient alveolar bone volume and long-term osseointegration instability during dental implantology. However, bone regeneration is a complex process consisting of osteogenesis, angiogenesis, and antibacterial function. For now, the in vivo osteogenic performance and antibacterial activity of pure Zn are inadequate, and thus fabricating a platform to endow Zn membranes with multifunctions may be essential to address these issues. In this study, various bimetallic magnesium/copper metal-organic framework (Mg/Cu-MOF) coatings were fabricated and immobilized on pure Zn. The results indicated that the degradation rate and water stability of Mg/Cu-MOF coatings could be regulated by controlling the feeding ratio of Cu2+. As the coating and Zn substrate degraded, an alkaline microenvironment enriched with Zn2+, Mg2+, and Cu2+ was generated. It significantly improved calcium phosphate deposition, differentiation of osteoblasts, and vascularization of endothelial cells in the extracts. Among them, Mg/Cu1 showed the best comprehensive performance. The superior antibacterial activity of Mg/Cu1 was demonstrated in vitro and in vivo, which indicated significantly enhanced bacteriostatic activity against Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli as compared to that of the bare sample. Bimetallic Mg/Cu-MOF coating could properly coordinate the multifunction on a Zn membrane and could be a promising platform for promoting its bone regeneration, which could pave the way for Zn-based materials to be used as barrier membranes in oral clinical trials.
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Affiliation(s)
- Kai Chen
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Yifan Wang
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
| | - Hongyan Tang
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
| | - Xufeng Niu
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
| | - Hongtao Yang
- School of Engineering Medicine, Beihang University, Beijing 100083, China
| | - Yanjie Bai
- Stomatology Department, Peking University Third Hospital, Beijing 100191, China
| | - Xuenan Gu
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
| | - Yufeng Zheng
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
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