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Wei X, Zhang Z, Wang L, Yan L, Yan Y, Wang C, Peng H, Fan X. Enhancing osteoblast proliferation and bone regeneration by poly (amino acid)/selenium-doped hydroxyapatite. Biomed Mater 2024; 19:035025. [PMID: 38537374 DOI: 10.1088/1748-605x/ad38ac] [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] [Received: 11/25/2023] [Accepted: 03/26/2024] [Indexed: 04/05/2024]
Abstract
Among various biomaterials employed for bone repair, composites with good biocompatibility and osteogenic ability had received increasing attention from biomedical applications. In this study, we doped selenium (Se) into hydroxyapatite (Se-HA) by the precipitation method, and prepared different amounts of Se-HA-loaded poly (amino acid)/Se-HA (PAA/Se-HA) composites (0, 10 wt%, 20 wt%, 30 wt%) byin-situmelting polycondensation. The physical and chemical properties of PAA/Se-HA composites were characterized by x-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and their mechanical properties. XRD and FT-IR results showed that PAA/Se-HA composites contained characteristic peaks of PAA and Se-HA with amide linkage and HA structures. DSC and TGA results specified the PAA/Se-HA30 composite crystallization, melting, and maximum weight loss temperatures at 203.33 °C, 162.54 °C, and 468.92 °C, respectively, which implied good thermal stability. SEM results showed that Se-HA was uniformly dispersed in PAA. The mechanical properties of PAA/Se-HA30 composites included bending, compressive, and yield strengths at 83.07 ± 0.57, 106.56 ± 0.46, and 99.17 ± 1.11 MPa, respectively. The cellular responses of PAA/Se-HA compositesin vitrowere studied using bone marrow mesenchymal stem cells (BMSCs) by cell counting kit-8 assay, and results showed that PAA/Se-HA30 composites significantly promoted the proliferation of BMSCs at the concentration of 2 mg ml-1. The alkaline phosphatase activity (ALP) and alizarin red staining results showed that the introduction of Se-HA into PAA enhanced ALP activity and formation of calcium nodule. Western blotting and Real-time polymerase chain reaction results showed that the introduction of Se-HA into PAA could promoted the expression of osteogenic-related proteins and mRNA (integrin-binding sialoprotein, osteopontin, runt-related transcription factor 2 and Osterix) in BMSCs. A muscle defect at the back and a bone defect at the femoral condyle of New Zealand white rabbits were introduced for evaluating the enhancement of bone regeneration of PAA and PAA/Se-HA30 composites. The implantation of muscle tissue revealed good biocompatibility of PAA and PAA/Se-HA30 composites. The implantation of bone defect showed that PAA/Se-HA30 composites enhanced bone formation at the defect site (8 weeks), exhibiting good bone conductivity. Therefore, the PAA-based composite was a promising candidate material for bone tissue regeneration.
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Affiliation(s)
- Xiaobo Wei
- Medical College, Yan'an University, Yan'an 716000, People's Republic of China
| | - Ziyue Zhang
- Medical College, Yan'an University, Yan'an 716000, People's Republic of China
| | - Lei Wang
- Medical College, Yan'an University, Yan'an 716000, People's Republic of China
| | - Lin Yan
- Medical College, Yan'an University, Yan'an 716000, People's Republic of China
| | - Yonggang Yan
- College of Physical Science and Technology, Sichuan University, Chengdu 610064, People's Republic of China
| | - Cheng Wang
- Medical College, Yan'an University, Yan'an 716000, People's Republic of China
| | - Haitao Peng
- Medical College, Yan'an University, Yan'an 716000, People's Republic of China
| | - Xiaoxia Fan
- Medical College, Yan'an University, Yan'an 716000, People's Republic of China
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Hendler RM, Weiss OE, Morad T, Sion G, Kirby M, Dubinsky Z, Barbora A, Minnes R, Baranes D. A Poly-D-lysine-Coated Coralline Matrix Promotes Hippocampal Neural Precursor Cells' Differentiation into GFAP-Positive Astrocytes. Polymers (Basel) 2023; 15:4054. [PMID: 37896298 PMCID: PMC10610048 DOI: 10.3390/polym15204054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 09/18/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023] Open
Abstract
A major goal of regenerative medicine of the central nervous system is to accelerate the regeneration of nerve tissue, where astrocytes, despite their positive and negative roles, play a critical role. Thus, scaffolds capable of producing astrocytes from neural precursor cells (NPCs) are most desirable. Our study shows that NPCs are converted into reactive astrocytes upon cultivation on coralline-derived calcium carbonate coated with poly-D-lysine (PDL-CS). As shown via nuclei staining, the adhesion of neurospheres containing hundreds of hippocampal neural cells to PDL-CS resulted in disaggregation of the cell cluster as well as the radial migration of dozens of cells away from the neurosphere core. Migrating cells per neurosphere averaged 100 on PDL-CS, significantly higher than on uncoated CS (28), PDL-coated glass (65), or uncoated glass (20). After 3 days of culture on PDL-CS, cell migration plateaued and remained stable for four more days. In addition, NPCs expressing nestin underwent continuous morphological changes from round to spiky, extending and elongating their processes, resembling activated astrocytes. The extension of the process increased continuously during the maturation of the culture and doubled after 7 days compared to day 1, whereas bifurcation increased by twofold during the first 3 days before plateauing. In addition, nestin positive cells' shape, measured through the opposite circularity level correlation, decreased approximately twofold after three days, indicating spiky transformation. Moreover, nestin-positive cells co-expressing GFAP increased by 2.2 from day 1 to 7, reaching 40% of the NPC population on day 7. In this way, PDL-CS promotes NPC differentiation into reactive astrocytes, which could accelerate the repair of neural tissue.
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Affiliation(s)
- Roni Mina Hendler
- Department of Molecular Biology, Ariel University, Ariel 4070000, Israel
| | - Orly Eva Weiss
- Department of Molecular Biology, Ariel University, Ariel 4070000, Israel
| | - Tzachy Morad
- Department of Molecular Biology, Ariel University, Ariel 4070000, Israel
| | - Guy Sion
- Department of Molecular Biology, Ariel University, Ariel 4070000, Israel
- Department of Science, The David Yellin Academic College of Education, Jerusalem 9103501, Israel
| | - Michael Kirby
- Department of Molecular Biology, Ariel University, Ariel 4070000, Israel
- Adelson School of Medicine, Ariel University, Ariel 4070000, Israel
| | - Zvy Dubinsky
- The Mina & Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Ayan Barbora
- Department of Physics, Ariel University, Ariel 4070000, Israel
| | - Refael Minnes
- Department of Physics, Ariel University, Ariel 4070000, Israel
| | - Danny Baranes
- Department of Molecular Biology, Ariel University, Ariel 4070000, Israel
- Adelson School of Medicine, Ariel University, Ariel 4070000, Israel
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Chen L, Wang B, Ren H, Wu Y, Lyu D, Ouyang Y, Zhang Q, Yan Y. Arg-Gly-Asp peptide functionalized poly-amino acid/ poly (p-benzamide) copolymer with enhanced mechanical properties and osteogenicity. BIOMATERIALS ADVANCES 2022; 133:112627. [PMID: 35527153 DOI: 10.1016/j.msec.2021.112627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 12/01/2021] [Accepted: 12/18/2021] [Indexed: 06/14/2023]
Abstract
Poly-amino acid (PAA) is a promising biomaterial in biomedical engineering due to its similar amide bond structure to collagen and excellent biocompatibility, but the lack of osteogenic activity and inferior mechanical strength limit its long-term application in orthopedics. In this study, a poly-amino acid/poly (p-benzamide) (PAA-PBA) copolymer with high mechanical strength was designed and fabricated by the method of solution polymerization. The chain structures, thermal properties and mechanical properties of these polymers were evaluated and results showed that PBA greatly promoted the mechanical properties of PAA, and the copolymer performed the maximum mechanical strengths with compressive strength, bending strength and tensile strength of 123 MPa, 107 MPa and, 95 MPa, respectively. To increase the bioactivity of surface, a bioactive coating that consists of poly-(dopamine) (PDA) nanolayers and tripeptide Arginine-Glycine-Aspartic acid (RGD) on sulfonated PAA-PBA copolymer was created. A porous structure appeared on the surface after modification, the surface roughness and hydrophilicity of copolymer has been improved obviously after introducing PDA and RGD peptide coating. The in vitro bioactivity evaluation demonstrated that the RGD-functionalized sample showed a significantly improved ability to promote bone apatite mineralization, cell adhesion, proliferation and osteogenic differentiation. In a word, such a strategy of material synthesis and surface modification method shows a great potential for broadening the use of PAA in the application of load-bearing bone substitute biomaterials.
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Affiliation(s)
- Lichao Chen
- School of chemical engineering, Sichuan University, Chengdu, Sichuan 610065, PR China
| | - Bo Wang
- School of chemical engineering, Sichuan University, Chengdu, Sichuan 610065, PR China
| | - Haohao Ren
- College of Physical Science and Technology, Sichuan University, Chengdu, Sichuan 610065, PR China
| | - Yanan Wu
- College of Physical Science and Technology, Sichuan University, Chengdu, Sichuan 610065, PR China
| | - Defu Lyu
- College of Physical Science and Technology, Sichuan University, Chengdu, Sichuan 610065, PR China
| | - Yanan Ouyang
- School of chemical engineering, Sichuan University, Chengdu, Sichuan 610065, PR China
| | - Qiyi Zhang
- School of chemical engineering, Sichuan University, Chengdu, Sichuan 610065, PR China.
| | - Yonggang Yan
- College of Physical Science and Technology, Sichuan University, Chengdu, Sichuan 610065, PR China.
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Fan X, Zhu S, Yan L, Zhu H. Reactive oxygen species‐responsive degradable poly(amino acid)s for biomedical use. J Appl Polym Sci 2021. [DOI: 10.1002/app.51386] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Xiaoxia Fan
- Medical College Yan'an University Yan'an China
| | - Sudi Zhu
- Medical College Yan'an University Yan'an China
| | - Lin Yan
- Medical College Yan'an University Yan'an China
| | - Hui Zhu
- Medical College Yan'an University Yan'an China
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Fan X, Li L, Zhu H, Yan L, Zhu S, Yan Y. Preparation, characterization, and in vitro and in vivo biocompatibility evaluation of polymer (amino acid and glycolic acid)/hydroxyapatite composite for bone repair. Biomed Mater 2021; 16:025004. [PMID: 33599212 DOI: 10.1088/1748-605x/abdbdd] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
A composite of hydroxyapatite (HA) and polymers prepared from amino acids and glycolic acid (PAG) was synthesized using an in situ melting polycondensation method. The in vitro degradability and bioactivity of the composite were evaluated, as well as its in vitro and in vivo biocompatibility based on subcutaneous and osseous implantation of samples in New Zealand white rabbits for 8 weeks. The results showed that the PAG/HA composite had higher degradability than PAG and showed a typical apatite morphology after immersion in simulated body fluid for 5 d. Both the PAG/HA composite and PAG alone showed excellent in vitro biocompatibility. In the rabbit model, PAG/HA composite could induce formation of new bone tissue after 4 weeks implantation, mainly owing to the excellent in vivo bioactivity of the implant. These results suggest that PAG/HA composites have the potential to guide bone regeneration and could be used as biodegradable biomaterials for bone repair.
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Affiliation(s)
- Xiaoxia Fan
- Medical College, Yan'an University, Yan'an 716000, People's Republic of China
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Wang X, Zhao D, Ren H, Yan Y, Li S. Biological evaluation of the modified nano-amorphous phosphate calcium doped with citrate/poly-amino acid composite as a potential candidate for bone repair and reconstruction. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2021; 32:16. [PMID: 33491099 PMCID: PMC7829244 DOI: 10.1007/s10856-020-06482-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 12/18/2020] [Indexed: 06/12/2023]
Abstract
Large numbers of research works related to fabricating organic-inorganic composite materials have been carried out to mimic the natural structure of bone. In this study, a new modified n-ACP doped with citrate (n-ACP-cit)/poly (amino acids) (PAA) composite (n-ACP-cit/PAA) was synthesized by employing high bioactive n-ACP-cit and the biodegradable and biocompatible PAA copolymer. Its basic structure was characterized by X-ray diffraction spectroscopy, Fourier transformed infrared spectroscopy, and X-ray photoelectron spectroscopy. Moreover, the degradability, bioactivity, biocompatibility, and osteoconductivity of n-ACP-cit/PAA composite were evaluated in vitro and in vivo, using simulated body fluid (SBF) solution soaking test, mouse bone marrow mesenchymal stem cells proliferation and differentiation, morphological observation test, expression of genes associated with osteogenesis, and bone defect model repair test, respectively. The modified n-ACP-cit/PAA composite exhibited a much higher weight loss rate (36.01 wt.%) than that of PAA (23.99 wt.%) after immersing in SBF solution for 16 weeks and the pH values of local environment restored to neutral condition. Moreover, cells co-culturing with composites exhibited higher alkaline phosphatase activity, more calcium nodule-formation, and higher expression levels of osteogenic differentiation-related genes (Bmp-2, Colla I, OCN, OPN, and Runx-2) than that of PAA. Furthermore, the bone defect model repair test revealed that the composite could be intimately incorporated with the surrounding bone without causing any deleterious reaction and capable of guiding new bone formation. Together, these results indicated that the new modified bone repair n-ACP-cit/PAA composite material with specific characteristics may be designed for meeting diverse requirements from biomedical applications.
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Affiliation(s)
- Xiaomei Wang
- College of Physics, Sichuan University, Chengdu, 610064, China
- Collaborative Innovation Center of Tissue Repair Material of Sichuan Province, College of Life Sciences, China West Normal University, Nanchong, 637009, China
| | - Dechuan Zhao
- Collaborative Innovation Center of Tissue Repair Material of Sichuan Province, College of Life Sciences, China West Normal University, Nanchong, 637009, China
| | - Haohao Ren
- College of Physics, Sichuan University, Chengdu, 610064, China.
| | - Yonggang Yan
- College of Physics, Sichuan University, Chengdu, 610064, China.
| | - Shuyang Li
- College of Physics, Sichuan University, Chengdu, 610064, China
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Hu J, Zhang R, Chen H, Wu Y, Chen L, Zhang Q, Ren H, Yan Y. The study on calcium polyphosphate/poly-amino acid composite for supportive bone substitute materials in vitro. NEW J CHEM 2021. [DOI: 10.1039/d0nj06128j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A poly-amino acid/calcium polyphosphate composite with high mechanical strength, excellent stability and biological activity was prepared and studied for bone-repaired.
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Affiliation(s)
- Jinbo Hu
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Rongguang Zhang
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Hong Chen
- College of Physics
- Sichuan University
- Chengdu 610065
- China
| | - Yanan Wu
- College of Physics
- Sichuan University
- Chengdu 610065
- China
| | - Lichao Chen
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Qiyi Zhang
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Haohao Ren
- College of Physics
- Sichuan University
- Chengdu 610065
- China
| | - Yonggang Yan
- College of Physics
- Sichuan University
- Chengdu 610065
- China
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Luo L, Li S, Ji M, Ding Z, Yan Y, Yin J, Xiong Y. Preparation of a novel bovine cancellous bone/poly-amino acid composite with low immunogenicity, proper strength, and cytocompatibility in vitro. J Biomed Mater Res A 2020; 109:1490-1501. [PMID: 33258539 DOI: 10.1002/jbm.a.37139] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 08/25/2020] [Accepted: 11/28/2020] [Indexed: 02/02/2023]
Abstract
In this work, the delipidized and deproteinized bovine cancellous bone powder/poly-amino acid (DDBP/PAA) composite was fabricated by extrusion-injection molding method for the first time. After about 70% clearance rate by the delipidization and deproteinization procedures, the residual antigens of galactosyl α-(1, 3)-galactosyl β-1,4-N-aeetylglueosaminyl (α-Gal) and major histocompatibility complex (MHC) II were basically eliminated by the extrusion-injection molding process, which may cause high titer of antibody and lead to hyperacute rejection or chronic immune toxicity. Meanwhile, the natural BMP II and apatite in bovine bone were kept in DDBP/PAA composite. After 26 weeks of immersion in simulated body fluid, the DDBP/PAA composite remained the intact appearance, 96.4% of weight, and 69.2% of compressive strength, and these showed sufficient degradation stability. The composite also exhibited excellent attachment and proliferation abilities of mouse bone marrow mesenchymal stem cells (mMSCs). The results herein suggested that the DDBP/PAA composite was expected to be a load-bearing transplant with some natural ingredients for hard tissue repair.
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Affiliation(s)
- Lin Luo
- College of Physics, Sichuan University, Chengdu, Sichuan, China
| | - Shuyang Li
- College of Physics, Sichuan University, Chengdu, Sichuan, China
| | - Mizhi Ji
- College of Physics, Sichuan University, Chengdu, Sichuan, China
| | - Zhengwen Ding
- College of Physics, Sichuan University, Chengdu, Sichuan, China
| | - Yonggang Yan
- College of Physics, Sichuan University, Chengdu, Sichuan, China
| | - Jie Yin
- School of Automation and Information Engineering, Sichuan University of Science and Engineering, Zigong, Sichuan, China
| | - Yi Xiong
- College of Physics, Sichuan University, Chengdu, Sichuan, China
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Chang HY, Tuan WH, Lai PL. Biphasic ceramic bone graft with biphasic degradation rates. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 118:111421. [PMID: 33255022 DOI: 10.1016/j.msec.2020.111421] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 08/04/2020] [Accepted: 08/16/2020] [Indexed: 11/28/2022]
Abstract
In this study, the characteristics of a novel biphasic bone graft are reported. The bone graft is a physical mixture of calcium sulfate (CS) and hydroxyapatite (HA). This biphasic bone graft was prepared by sintering at 1100 °C. Since the degradation rate of CS is much faster than that of HA, the CS/HA biphasic bone graft exhibits two degradation rates. The degradation rate is rapid (~10 wt%/week) in the first stage and then slow (~1 wt%/week) in the second stage. The biphasic bone graft has been implanted into the distal femur of rat. Most the bone graft was degraded 13 weeks postoperatively. Instead, trabecular bone and vascular tissue are observed at the location of implant. The bone graft is unique for its burst of calcium ions at the start and its ability to remain stable throughout the degradation process. Its stable porous structure serves as an ideal scaffold for the formation of new bone as well as vascularization.
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Affiliation(s)
- Hao-Yu Chang
- Department of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan
| | - Wei-Hsing Tuan
- Department of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan; Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan.
| | - Po-Liang Lai
- Department of Orthopedic Surgery, Bone and Joint Research Center, Chang Gung Memorial Hospital at Linkou, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan.
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Chen T, Zou Q, Du C, Wang C, Li Y, Fu B. Biodegradable 3D printed HA/CMCS/PDA scaffold for repairing lacunar bone defect. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 116:111148. [DOI: 10.1016/j.msec.2020.111148] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 04/14/2020] [Accepted: 05/31/2020] [Indexed: 12/13/2022]
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Keppler AM, Saller MM, Alberton P, Westphal I, Heidenau F, Schönitzer V, Böcker W, Kammerlander C, Schieker M, Aszodi A, Neuerburg C. Bone defect reconstruction with a novel biomaterial containing calcium phosphate and aluminum oxide reinforcement. J Orthop Surg Res 2020; 15:287. [PMID: 32727506 PMCID: PMC7391532 DOI: 10.1186/s13018-020-01801-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 07/14/2020] [Indexed: 01/09/2023] Open
Abstract
Background Reconstruction of metaphyseal fractures represents a clinical challenge for orthopedic surgeons. Especially in osteoporotic bone, these fractures are frequently accompanied by osseous substance defects. In order to ensure rapid mobilization of patients, high stability requirements must be met by osteosynthesis. Various bone graft materials have been introduced in the past, such as autologous bone or exogenous bone substitute materials. These are used as bone void fillers or as augmentation techniques to ensure safe fixation of osteosynthesis. New calcium phosphate-based bone void-filling materials could be a promising alternative to autologous bone or to the currently and widely used polymethylmethacrylate (PMMA)-based cement. The aim of this study was to evaluate a novel paste-like bone void filler in vivo and in vitro with regard to biocompatibility and osteoconductivity. Methods In addition to in vitro testing of cell compatibility using pre-osteoblasts (MC3T3-E1), 35 Wistar rats were treated in vivo with implantation of various material mixtures based on calcium phosphate and aluminum oxide reinforcement in a metaphyseal drill hole defect. After 4 weeks, an examination by micro-computed tomography (μCT) and histology was performed. Results The in vitro analysis showed good biocompatibility with a high cell survival of osteoblasts. In the in vivo experiments, a significantly higher bone ingrowth compared to the empty defect was shown by μCT and histological analysis. Here, the group receiving material reinforced with aluminum oxide (Al2O3) showed a bone volume/tissue volume (BV/TV) of 89.19% compared to a BV/TV of 83.14% for the empty defect (p = 0.0013). In the group treated with a polysaccharide matrix, no increase in BV/TV was observed given a mean ratio of 80.14%. Scoring of histological sections did not reveal a significant difference between CaP and CaP that was substituted with Al2O3. Conclusion The results of this study show an encouraging first step towards the development of new pasty, bone void-filling materials. We demonstrated that a new paste-like bone-filling material, based on calcium phosphate granulates and aluminum oxide to provide strength, exhibits good biocompatibility and osteoconductivity. Further biomechanical test in an osteoporotic animal model will have to be performed, to prove feasibility in metaphyseal defects.
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Affiliation(s)
- Alexander M Keppler
- Department of General, Trauma and Reconstructive Surgery, University Hospital of the Ludwig-Maximilians-University Munich, Campus Großhadern, Marchioninistraße 15, 81377, Munich, Germany
| | - Maximilian M Saller
- Department of General, Trauma and Reconstructive Surgery, University Hospital of the Ludwig-Maximilians-University Munich, Campus Großhadern, Marchioninistraße 15, 81377, Munich, Germany
| | - Paolo Alberton
- Department of General, Trauma and Reconstructive Surgery, University Hospital of the Ludwig-Maximilians-University Munich, Campus Großhadern, Marchioninistraße 15, 81377, Munich, Germany
| | - Ines Westphal
- Department of General, Trauma and Reconstructive Surgery, University Hospital of the Ludwig-Maximilians-University Munich, Campus Großhadern, Marchioninistraße 15, 81377, Munich, Germany.,LivImplant GmbH, Starnberg, Germany
| | | | - Veronika Schönitzer
- Department of General, Trauma and Reconstructive Surgery, University Hospital of the Ludwig-Maximilians-University Munich, Campus Großhadern, Marchioninistraße 15, 81377, Munich, Germany
| | - Wolfgang Böcker
- Department of General, Trauma and Reconstructive Surgery, University Hospital of the Ludwig-Maximilians-University Munich, Campus Großhadern, Marchioninistraße 15, 81377, Munich, Germany
| | - Christian Kammerlander
- Department of General, Trauma and Reconstructive Surgery, University Hospital of the Ludwig-Maximilians-University Munich, Campus Großhadern, Marchioninistraße 15, 81377, Munich, Germany
| | - Matthias Schieker
- Department of General, Trauma and Reconstructive Surgery, University Hospital of the Ludwig-Maximilians-University Munich, Campus Großhadern, Marchioninistraße 15, 81377, Munich, Germany.,Novartis Institute for Biomedical Research, Basel, Switzerland.,LivImplant GmbH, Starnberg, Germany
| | - Attila Aszodi
- Department of General, Trauma and Reconstructive Surgery, University Hospital of the Ludwig-Maximilians-University Munich, Campus Großhadern, Marchioninistraße 15, 81377, Munich, Germany
| | - Carl Neuerburg
- Department of General, Trauma and Reconstructive Surgery, University Hospital of the Ludwig-Maximilians-University Munich, Campus Großhadern, Marchioninistraße 15, 81377, Munich, Germany.
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Vasconcellos LMR, Elias CDMV, Minhoto GB, Abdala JMA, Andrade TM, de Araujo JCR, Gusmão SBS, Viana BC, Marciano FR, Lobo AO. Rotary-jet spun polycaprolactone/nano-hydroxyapatite scaffolds modified by simulated body fluid influenced the flexural mode of the neoformed bone. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2020; 31:72. [PMID: 32719958 DOI: 10.1007/s10856-020-06403-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 07/12/2020] [Indexed: 06/11/2023]
Abstract
Polycaprolactone (PCL) is a biocompatible, biodegradable synthetic polymer which in combination with nanohydroxyapatite (nHAp) can give rise to a low cost, nontoxic bioactive product with excellent mechanical properties and slow degradation. Here we produced, characterized and evaluated in vivo the bone formation of PCL/nHAp scaffolds produced by the rotary jet spinning technique. The scaffolds produced were firstly soaked into simulated body fluid for 21 days to also obtain nHAp onto PCL/nHAp scaffolds. Afterwards, the scaffolds were characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy and Raman spectroscopy. For in vivo experiments, 20 male Wistar rats were used and randomly divided in 4 experimental groups (n = 5). A critical defect of 3 mm in diameter was made in the tibia of the animals, which were filled with G1 control (clot); G2-PCL scaffold; G3-PCL/nHAp (5%) scaffold; G4-PCL/nHAp (20%) scaffold. All animals were euthanized 60 days after surgery, and the bone repair in the right tibiae were evaluated by radiographic analysis, histological analysis and histomorphometric analysis. While in the left tibias, the areas of bone repair were submitted to the flexural strength test. Radiographic and histomorphometric analyses no showed statistical difference in new bone formation between the groups, but in the three-point flexural tests, the PCL/nHAp (20%) scaffold positively influenced the flexural mode of the neoformed bone. These findings indicate that PCL/nHAp (20%) scaffold improve biomechanical properties of neoformed bone and could be used for bone medicine regenerative.
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Affiliation(s)
- Luana M R Vasconcellos
- Department of Bioscience and Oral Diagnosis, Institute of Science and Technology, Sao Paulo State University, 12245-000, Sao Jose dos Campos, Sao Paulo, Brazil.
| | | | - Giovanna B Minhoto
- Department of Bioscience and Oral Diagnosis, Institute of Science and Technology, Sao Paulo State University, 12245-000, Sao Jose dos Campos, Sao Paulo, Brazil
| | - Julia M A Abdala
- Instituto Científico e Tecnológico, Universidade Brasil, 08230-030, Sao Paulo, Brazil
| | - Telmo M Andrade
- Instituto Científico e Tecnológico, Universidade Brasil, 08230-030, Sao Paulo, Brazil
- Uninassau University, 64017-775, Teresina, Piauí, Brazil
| | - Juliani C R de Araujo
- Department of Bioscience and Oral Diagnosis, Institute of Science and Technology, Sao Paulo State University, 12245-000, Sao Jose dos Campos, Sao Paulo, Brazil
| | | | - Bartolomeu C Viana
- Department of Physics, UFPI-Federal University of Piauí, 64049-550, Teresina, Piauí, Brazil
- LIMAV - Interdisciplinary Laboratory for Advanced Materials, BioMatLab, Department of Materials Engineering, UFPI - Federal University of Piaui, 64049-550, Teresina, Piauí, Brazil
| | - Fernanda R Marciano
- LIMAV - Interdisciplinary Laboratory for Advanced Materials, BioMatLab, Department of Materials Engineering, UFPI - Federal University of Piaui, 64049-550, Teresina, Piauí, Brazil
| | - Anderson O Lobo
- Department of Physics, UFPI-Federal University of Piauí, 64049-550, Teresina, Piauí, Brazil.
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13
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Fan X, Yan Y. Poly(amino acid)/ZnO nanoparticles nanocomposites with enhanced thermal, mechanical, and antibacterial properties. Polym Bull (Berl) 2019. [DOI: 10.1007/s00289-019-02860-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Wu Y, Ding Z, Ren H, Ji M, Yan Y. Preparation, Characterization and In Vitro Biological Evaluation of a Novel Pearl Powder/Poly-Amino Acid Composite as a Potential Substitute for Bone Repair and Reconstruction. Polymers (Basel) 2019; 11:E831. [PMID: 31071963 PMCID: PMC6572604 DOI: 10.3390/polym11050831] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Revised: 04/18/2019] [Accepted: 05/02/2019] [Indexed: 11/16/2022] Open
Abstract
Many studies about fabricating organic-inorganic composite materials have been carried out in order to mimic the natural structure of bone. Pearl, which has a special block-and-mortar hierarchical structure, is a superior bone repair material with high osteogenic activity, but it shows few applications in the clinical bone repair and reconstruction because of its brittle and uneasily shaped properties. In this work, pearl powder (P)/poly (amino acid) (PAA) composites were successfully prepared by a method of in situ melting polycondensation to combine the high osteogenic activity of the pearl and the pliability of the PAA. The mechanical properties, in vitro bioactivity and biocompatibility as well as osteogenic activity of the composites were investigated. The results showed that P/PAA composites have both good mechanical properties and bioactivity. The compressive strength, bending strength and tensile strength of the composites reached a maximum of 161 MPa, 50 MPa and 42 MPa, respectively; in addition, apatite particles successfully deposited on the composites surface after immersion in simulated body fluid (SBF) for 7 days indicated that P/PAA composites showed an enhanced mineralization capacity and bioactivity due to incorporation of pearl powder and PAA. The cell culture results revealed that higher cell proliferation and better adhesion morphology of mouse bone marrow mesenchymal stem cells (MSCs) appeared on the composite surface. Moreover, cells growing on the surface of the composites exhibited higher alkaline phosphatase (ALP) activity, more calcium nodule-formation, and higher expression levels of osteogenic differentiation-related genes (COL 1, RunX2, OCN, and OPN) than cells grown on PAA surface. The P/PAA composites exhibited both superior mechanical properties to the pearl powder, higher bioactivity and osteogenic capability compared with those of PAA.
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Affiliation(s)
- Yanan Wu
- College of Physical Science and Technology, Sichuan University, Chengdu 610064, China.
| | - Zhengwen Ding
- College of Physical Science and Technology, Sichuan University, Chengdu 610064, China.
| | - Haohao Ren
- College of Physical Science and Technology, Sichuan University, Chengdu 610064, China.
| | - Mizhi Ji
- College of Physical Science and Technology, Sichuan University, Chengdu 610064, China.
| | - Yonggang Yan
- College of Physical Science and Technology, Sichuan University, Chengdu 610064, China.
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15
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Fan X, Peng H, Li H, Yan Y. Reconstruction of calvarial bone defects using poly(amino acid)/hydroxyapatite/calcium sulfate composite. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2019; 30:107-121. [PMID: 30518309 DOI: 10.1080/09205063.2018.1554833] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The aim of this study was to evaluate the thermal properties and in vivo interface performance of poly(amino acid) (PAA) and a composite containing PAA, hydroxyapatite (HA), and calcium sulfate (CS), with respect to their suitability for skull repair. Biocompatibility was evaluated by implantation of materials into muscles of rabbits for eight weeks. Skull repair was assessed by implanting PAA, the compact PAA/HA/CS composite (c-PAA/HA/CS), and a one-side-porous PAA/HA/CS composite (p-PAA/HA/CS) into rabbit calvarial defects. The results showed that the PAA/HA/CS composite possessed good heat resistance and possessed excellent biocompatibility and osteoconductivity. Guided bone regeneration and calvarial repair were observed, with excellent integration between calvarial tissue and implant. The p-PAA/HA/CS composite performed best in terms of stability and bone bonding between implant and host bone tissue. Thus, the present work provides new information for the potential use of osteoconductive PAA/HA/CS composites with a macrostructure in calvarial bone repair.
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Affiliation(s)
- Xiaoxia Fan
- a College of Physical Science and Technology, Sichuan University , Chengdu , China.,b Medical College, Yan'an University , Yan'an , China
| | - Haitao Peng
- a College of Physical Science and Technology, Sichuan University , Chengdu , China
| | - Hong Li
- a College of Physical Science and Technology, Sichuan University , Chengdu , China
| | - Yonggang Yan
- a College of Physical Science and Technology, Sichuan University , Chengdu , China
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16
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Pförringer D, Harrasser N, Mühlhofer H, Kiokekli M, Stemberger A, van Griensven M, Lucke M, Burgkart R, Obermeier A. Osteoinduction and -conduction through absorbable bone substitute materials based on calcium sulfate: in vivo biological behavior in a rabbit model. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2018; 29:17. [PMID: 29318379 DOI: 10.1007/s10856-017-6017-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2017] [Accepted: 12/05/2017] [Indexed: 06/07/2023]
Abstract
Calcium sulfate (CS) can be used as an antibiotically impregnated bone substitute in a variety of clinical constellations. Antibiotically loaded bone substitutes find specific application in orthopedic and trauma surgery to prevent or treat bone infections especially in relation to open bone defects. However, its use as a structural bone graft reveals some concerns due to its fast biodegradation. The addition of calcium carbonate and tripalmitin makes CS formulations more resistant to resorption leaving bone time to form during a prolonged degradation process. The aim of the present study was the evaluation of biocompatibility and degradation properties of newly formulated antibiotically impregnated CS preparations. Three different types of CS bone substitute beads were implanted into the tibial metaphysis of rabbits (CS dihydrate with tripalmitin, containing gentamicin (Group A) or vancomycin (Group B); Group C: tobramycin-loaded CS hemihydrate). Examinations were performed by means of x-ray, micro-computed tomography (micro-CT) and histology after 4, 6, 8 and 12 weeks. Regarding biocompatibility of the formulations, no adverse reactions were observed. Histology showed formation of vital bone cells attached directly to the implanted materials, while no cytotoxic effect in the surrounding of the beads was detected. All CS preparations showed osteogenesis associated to implanted material. Osteoblasts attached directly to the implant surface and revealed osteoid production, osteocytes were found in newly mineralized bone. Group C implants (Osteoset®) were subject to quick degradation within 4 weeks, after 6-8 weeks there were only minor remnants with little osteogenesis demonstrated by histological investigations. Group A implants (Herafill®-G) revealed similar degradation within atleast 12 weeks. In contrast, group B implants (CaSO4-V) were still detectable after 12 weeks with the presence of implant-associated osteogenesis atlatest follow-up. In all of these preparations, giant cells were found during implant degradation on surface and inside of resorption lacunae. None of the analyzed CS preparations triggered contact activation. All implants demonstrated excellent biocompatibility, with implants of Group A and B showing excellent features as osteoconductive and -inductive scaffolds able to improve mechanical stability.
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Affiliation(s)
- D Pförringer
- Klinikum rechts der Isar der Technischen Universität München, Klinik und Poliklinik für Unfallchirurgie, München, Germany.
| | - N Harrasser
- Klinikum rechts der Isar der Technischen Universität München, Klinik für Orthopädie und Sportorthopädie, München, Germany
| | - H Mühlhofer
- Klinikum rechts der Isar der Technischen Universität München, Klinik für Orthopädie und Sportorthopädie, München, Germany
| | - M Kiokekli
- Klinikum rechts der Isar der Technischen Universität München, Klinik für Orthopädie und Sportorthopädie, München, Germany
| | - A Stemberger
- Klinikum rechts der Isar der Technischen Universität München, Klinik für Orthopädie und Sportorthopädie, München, Germany
| | - M van Griensven
- Klinikum rechts der Isar der Technischen Universität München, Klinik und Poliklinik für Unfallchirurgie, München, Germany
| | - M Lucke
- Chirurgisches Klinikum München Süd, München, Germany
| | - R Burgkart
- Klinikum rechts der Isar der Technischen Universität München, Klinik für Orthopädie und Sportorthopädie, München, Germany
| | - A Obermeier
- Klinikum rechts der Isar der Technischen Universität München, Klinik für Orthopädie und Sportorthopädie, München, Germany
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17
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Jing L, Chen L, Peng H, Ji M, Xiong Y, Lv G. Employing the cyclophosphate to accelerate the degradation of nano-hydroxyapatite/poly(amino acid) (n-HA/PAA) composite materials. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2017; 28:2154-2170. [PMID: 28950766 DOI: 10.1080/09205063.2017.1386030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Owing to the good degradability and biocompatibility of polyphosphoesters (PPEs), the aim of the current study was to investigate a novel degradable composite of nano-hydroxyapatite/poly(amino acid) (n-HA/PAA) with cyclophosphate (CPE) via in situ melting polymerization to improve the degradation of n-HA/PAA. The structure of each composite was characterized via Fourier transform infrared spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The degradation properties were studied in terms of the weight loss and pH in a phosphate-buffered saline (PBS) solution, while the surface morphology was examined using a scanning electron microscope-energy dispersive spectrometer (SEM-EDS) after soaking the surface in simulated body fluid (SBF). The cell proliferation, cell adhesion, and alkaline phosphatase (ALP) activity were used for the analysis of cytocompatibility. The weight loss results showed that the n-HA/PAA composite was 9.98 wt%, weighed after soaking in the PBS solution for 12 weeks, whereas the nano-hydroxyapatite/polyphosphoester-amino acid (n-HA/PPE-AA) composite was 46.94 wt%. The pH of the composites was in a suitable range between 6.64 to 7.06 and finally stabilized at 7.39. The SEM and EDS results revealed the formation of an apatite-like layer on the surface of the n-HA/PPE-AA composites after soaking in SBF for one week. The cell counting Kit 8 (CCK-8) assay of the cell culture in the leaching liquid of the n-HA/PPE-AA composites exhibited non-cytotoxicity and high-proliferation, and the cell adhesion showed the well spreading and normal phenotype extension of the cells on the n-HA/PPE-AA composites surface. Concurrently, the co-culture results of the composites and cells confirmed that the n-HA/PPE-AA composites exhibited a higher ALP activity. In summary, the results demonstrated that the n-HA/PPE-AA composites had a controllable degradation property, good bioactivity, and cytocompatibility.
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Affiliation(s)
- Linjing Jing
- a College of Physical Science and Technology , Sichuan University , Chengdu , China
| | - Li Chen
- a College of Physical Science and Technology , Sichuan University , Chengdu , China
| | - Haitao Peng
- a College of Physical Science and Technology , Sichuan University , Chengdu , China
| | - Mizhi Ji
- a College of Physical Science and Technology , Sichuan University , Chengdu , China
| | - Yi Xiong
- a College of Physical Science and Technology , Sichuan University , Chengdu , China
| | - Guoyu Lv
- a College of Physical Science and Technology , Sichuan University , Chengdu , China
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18
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Shuai C, Shuai C, Wu P, Yuan F, Feng P, Yang Y, Guo W, Fan X, Su T, Peng S, Gao C. Characterization and Bioactivity Evaluation of (Polyetheretherketone/Polyglycolicacid)-Hydroyapatite Scaffolds for Tissue Regeneration. MATERIALS 2016; 9:ma9110934. [PMID: 28774058 PMCID: PMC5457255 DOI: 10.3390/ma9110934] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 11/03/2016] [Accepted: 11/14/2016] [Indexed: 01/13/2023]
Abstract
Bioactivity and biocompatibility are crucial for tissue engineering scaffolds. In this study, hydroxyapatite (HAP) was incorporated into polyetheretherketone/polyglycolicacid (PEEK/PGA) hybrid to improve its biological properties, and the composite scaffolds were developed via selective laser sintering (SLS). The effects of HAP on physical and chemical properties of the composite scaffolds were investigated. The results demonstrated that HAP particles were distributed evenly in PEEK/PGA matrix when its content was no more than 10 wt %. Furthermore, the apatite-forming ability became better with increasing HAP content after immersing in simulated body fluid (SBF). Meanwhile, the composite scaffolds presented a greater degree of cell attachment and proliferation than PEEK/PGA scaffolds. These results highlighted the potential of (PEEK/PGA)-HAP scaffolds for tissue regeneration.
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Affiliation(s)
- Cijun Shuai
- State Key Laboratory of High Performance Complex Manufacturing, the State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China.
- State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Chenying Shuai
- State Key Laboratory of High Performance Complex Manufacturing, the State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China.
| | - Ping Wu
- College of Chemistry, Xiangtan University, Xiangtan 411105, China.
| | - Fulai Yuan
- Hunan Farsoon High-Technology Co. Ltd., Changsha 410205, China.
| | - Pei Feng
- State Key Laboratory of High Performance Complex Manufacturing, the State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China.
| | - Youwen Yang
- State Key Laboratory of High Performance Complex Manufacturing, the State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China.
- State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Wang Guo
- State Key Laboratory of High Performance Complex Manufacturing, the State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China.
| | - Xiaohan Fan
- Health Management Center, Xiangya Hospital, Central South University, Changsha 410008, China.
| | - Ting Su
- Health Management Center, Xiangya Hospital, Central South University, Changsha 410008, China.
| | - Shuping Peng
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Xiangya Hospital, Central South University, Changsha 410008, China.
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha 410078, China.
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha 410078, China.
| | - Chengde Gao
- State Key Laboratory of High Performance Complex Manufacturing, the State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China.
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