1
|
Gao Q, Hou Y, Li Z, Hu J, Huo D, Zheng H, Zhang J, Yao X, Gao R, Wu X, Sui L. mTORC2 regulates hierarchical micro/nano topography-induced osteogenic differentiation via promoting cell adhesion and cytoskeletal polymerization. J Cell Mol Med 2021; 25:6695-6708. [PMID: 34114337 PMCID: PMC8278073 DOI: 10.1111/jcmm.16672] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Revised: 04/16/2021] [Accepted: 05/08/2021] [Indexed: 12/12/2022] Open
Abstract
Surface topography acts as an irreplaceable role in the long‐term success of intraosseous implants. In this study, we prepared the hierarchical micro/nano topography using selective laser melting combined with alkali heat treatment (SLM‐AHT) and explored the underlying mechanism of SLM‐AHT surface‐elicited osteogenesis. Our results show that cells cultured on SLM‐AHT surface possess the largest number of mature FAs and exhibit a cytoskeleton reorganization compared with control groups. SLM‐AHT surface could also significantly upregulate the expression of the cell adhesion‐related molecule p‐FAK, the osteogenic differentiation‐related molecules RUNX2 and OCN as well as the mTORC2 signalling pathway key molecule Rictor. Notably, after the knocked‐down of Rictor, there were no longer significant differences in the gene expression levels of the cell adhesion‐related molecules and osteogenic differentiation‐related molecules among the three titanium surfaces, and the cells on SLM‐AHT surface failed to trigger cytoskeleton reorganization. In conclusion, the results suggest that mTORC2 can regulate the hierarchical micro/nano topography‐mediated osteogenesis via cell adhesion and cytoskeletal reorganization.
Collapse
Affiliation(s)
- Qian Gao
- Department of Prosthodontics, Tianjin Medical University School and Hospital of Stomatology, Tianjin, China.,Tianjin Key Laboratory of Medical Epigenetics, Department of Cell Biology, 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, Tianjin Medical University, Tianjin, China
| | - Yuying Hou
- Tianjin Key Laboratory of Medical Epigenetics, Department of Cell Biology, 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, Tianjin Medical University, Tianjin, China
| | - Zhe Li
- Department of Prosthodontics, Tianjin Medical University School and Hospital of Stomatology, Tianjin, China
| | - Jinyang Hu
- Tianjin Key Laboratory of Medical Epigenetics, Department of Cell Biology, 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, Tianjin Medical University, Tianjin, China.,Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dawei Huo
- Tianjin Key Laboratory of Medical Epigenetics, Department of Cell Biology, 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, Tianjin Medical University, Tianjin, China
| | - Huimin Zheng
- Department of Prosthodontics, Tianjin Medical University School and Hospital of Stomatology, Tianjin, China.,Tianjin Key Laboratory of Medical Epigenetics, Department of Cell Biology, 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, Tianjin Medical University, Tianjin, China
| | - Junjiang Zhang
- Department of Prosthodontics, Tianjin Medical University School and Hospital of Stomatology, Tianjin, China
| | - Xiaoyu Yao
- Department of Prosthodontics, Tianjin Medical University School and Hospital of Stomatology, Tianjin, China
| | - Rui Gao
- International Education College, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xudong Wu
- Tianjin Key Laboratory of Medical Epigenetics, Department of Cell Biology, 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, Tianjin Medical University, Tianjin, China
| | - Lei Sui
- Department of Prosthodontics, Tianjin Medical University School and Hospital of Stomatology, Tianjin, China
| |
Collapse
|
2
|
Liu H, Zhu H, Cheng L, Zhao Y, Chen X, Li J, Xv X, Xiao Z, Li W, Pan J, Zhang Q, Zeng C, Guo J, Xie D, Cai D. TCP/PLGA composite scaffold loaded rapamycin in situ enhances lumbar fusion by regulating osteoblast and osteoclast activity. J Tissue Eng Regen Med 2021; 15:475-486. [PMID: 33686790 DOI: 10.1002/term.3186] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 02/22/2021] [Indexed: 11/07/2022]
Abstract
The purpose of this study was to develop a novel β-tricalcium phosphate (TCP)/poly (D,L-lactic-co-glycolic acid) (PLGA) composite scaffold loaded with rapamycin that can regulate the activity of osteoblasts and osteoclasts for lumbar fusion. The TCP/PLGA composite scaffold was fabricated by cryogenic three-dimensional printing techniques and then loaded with rapamycin in situ. The structural surface morphology of the composite scaffold was tested with scanning electron microscope. To evaluate the biocompatibility of the composite scaffold in vitro, bone marrow mesenchymal stem cells (BMSCs) were cultured on the TCP/PLGA composite scaffold slide and tested with Live/Dead Viability Kit. The effect of rapamycin on osteoclast and osteoblast was studied with staining and Western blotting. The in vitro results showed that the rapamycin-loaded TCP/PLGA composite scaffold showed good biocompatibility with BMSC and released rapamycin obviously promoted the osteoblast differentiation and mineralization. In vivo study, the TCP/PLGA composite scaffold loaded with rapamycin were implanted in lumbar fusion model and study with micro-computed tomography scanning, hematoxylin-eosin, Masson, and immune-histological staining, to evaluate the effect of rapamycin on bone fusion. The in vivo results demonstrated that rapamycin-loaded TCP/PLGA composite scaffold could enhance bone formation by regulating osteoblast and osteoclast activity, respectively. In this study, the TCP/PLGA composite scaffold loaded with rapamycin was confirmed to provide great compatibility and improved performance in lumbar fusion by regulating osteoblastic and osteoclastic activity and would be a promising composite biomaterial for bone tissue engineering.
Collapse
Affiliation(s)
- Hai Liu
- Department of Orthopaedic Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China
| | - Huangrong Zhu
- Department of Orthopaedic Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China
| | - Liang Cheng
- Department of Orthopaedic Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China
| | - Yitao Zhao
- Department of Orthopaedic Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China
| | - Xizhong Chen
- Department of Orthopaedic Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China
| | - Jintao Li
- Department of Orthopaedic Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China
| | - Xin Xv
- Department of Orthopaedic Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China
| | - Zhisheng Xiao
- Department of Orthopaedic Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China
| | - Wei Li
- Department of Orthopaedic Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China
| | - Jianying Pan
- Department of Orthopaedic Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China
| | - Qun Zhang
- Department of Orthopaedic Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China
- Office of Clinical Trial of Drug, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China
| | - Chun Zeng
- Department of Orthopaedic Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China
| | - Jinshan Guo
- Department of Orthopaedic Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China
- Department of Histology and Embryology, School of Basic Medical Science, Southern Medical University, Guangzhou, Guangdong, China
| | - Denghui Xie
- Department of Orthopaedic Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China
| | - Daozhang Cai
- Department of Orthopaedic Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China
| |
Collapse
|
3
|
Sequential release of immunomodulatory cytokines binding on nano-hydroxyapatite coated titanium surface for regulating macrophage polarization and bone regeneration. Med Hypotheses 2020; 144:110241. [PMID: 33254547 DOI: 10.1016/j.mehy.2020.110241] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 07/30/2020] [Accepted: 08/30/2020] [Indexed: 11/22/2022]
Abstract
Inflammation occurs when the material is implanted into the body. As one of the important immune cells in the regulation of inflammation, macrophages are able to remove pathogens and necrotic cells, and polarize to different phenotypes to regulate inflammatory response for tissue regeneration. Therefore, it is known that the sequential release of immunomodulatory cytokines from the surface of titanium (Ti) implants can regulate the polarization of macrophages and promote osseointegration of implants. In order to control the switch of macrophage phenotypes at desired time, we fabricated hydroxyapatite (HAp) nanotube arrays coating on Ti surface, by acid-etching, alkali-heating and HAp coating sequentially. Then we loaded the interleukin-4 (IL-4) encapsulated by poly (lactic-co-glycolic acid) (PLGA) on the bottom of the nanotube and the interferon-γ (IFN-γ) encapsulated by sodium hyaluronate (SH) on the top of the nanotube. Based on the physical and chemical properties of PLGA and SH and the spatial distribution of loaded cytokines, we hypothesized that the programmed release of IFN-γ and IL-4, which made the phenotypic transition of macrophages at a specific time, so as to regulate inflammation and promote osteogenic repair. Our hypothesis created a new type of drug sustained release system, which has high research value for improving the osseointegration of implants.
Collapse
|
4
|
Shiel AI, Ayre WN, Blom AW, Hallam KR, Heard PJ, Payton O, Picco L, Mansell JP. Development of a facile fluorophosphonate-functionalised titanium surface for potential orthopaedic applications. J Orthop Translat 2020; 23:140-151. [PMID: 32818135 PMCID: PMC7427324 DOI: 10.1016/j.jot.2020.02.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/29/2022] Open
Abstract
Background Aseptic loosening of total joint replacements (TJRs) continues to be the main cause of implant failures. The socioeconomic impact of surgical revisions is hugely significant; in the United Kingdom alone, it is estimated that £137 m is spent annually on revision arthroplasties. Enhancing the longevity of titanium implants will help reduce the incidence and overall cost of failed devices. Methods In realising the development of a superior titanium technology, we exploited the natural affinity of titanium for phosphonic acids and developed a facile means of coating the metal with (3S)1-fluoro-3-hydroxy-4-(oleoyloxy)butyl-1-phosphonate (FHBP), a phosphatase-resistant analogue of lysophosphatidic acid (LPA). Importantly LPA and selected LPA analogues like FHBP synergistically cooperate with calcitriol to promote human osteoblast formation and maturation. Results Herein, we provide evidence that simply immersing titanium in aqueous solutions of FHBP afforded a surface that was superior to unmodified metal at enhancing osteoblast maturation. Importantly, FHBP-functionalised titanium remained stable to 2 years of ambient storage, resisted ∼35 kGy of gamma irradiation and survived implantation into a bone substitute (Sawbone™) and irrigation. Conclusion The facile step we have taken to modify titanium and the robustness of the final surface finish are appealing properties that are likely to attract the attention of implant manufacturers in the future. The translational potential of this article We have generated a functionalised titanium (Ti) surface by simply immersing Ti in aqueous solutions of a bioactive lipid. As a facile procedure it will have greater appeal to implant manufacturers compared to onerous and costly developmental processes.
Collapse
Affiliation(s)
- Anna I Shiel
- Department of Applied Sciences, University of the West of England, Coldharbour Lane, Bristol, BS16 1QY, UK
| | - Wayne N Ayre
- School of Dentistry, Cardiff University, Cardiff, CF14 4XY, UK
| | - Ashley W Blom
- Musculoskeletal Research Unit, University of Bristol, Southmead, Bristol, BS10 5NB, UK
| | - Keith R Hallam
- University of Bristol, Interface Analysis Centre, HH Wills Physics Laboratory, Tyndall Avenue, Bristol, BS8 1TL, UK
| | - Peter J Heard
- University of Bristol, Interface Analysis Centre, HH Wills Physics Laboratory, Tyndall Avenue, Bristol, BS8 1TL, UK
| | - Oliver Payton
- University of Bristol, Interface Analysis Centre, HH Wills Physics Laboratory, Tyndall Avenue, Bristol, BS8 1TL, UK
| | - Loren Picco
- University of Bristol, Interface Analysis Centre, HH Wills Physics Laboratory, Tyndall Avenue, Bristol, BS8 1TL, UK.,Department of Physics, Virginia Commonwealth University, Richmond, 23284, VA, USA
| | - Jason P Mansell
- Department of Applied Sciences, University of the West of England, Coldharbour Lane, Bristol, BS16 1QY, UK
| |
Collapse
|
5
|
A Review of In-Situ Grown Nanocomposite Coatings for Titanium Alloy Implants. JOURNAL OF COMPOSITES SCIENCE 2020. [DOI: 10.3390/jcs4020041] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Composite coatings are commonly applied to medical metal implants in order to improve biocompatibility and/or bioactivity. In this context, two types of titanium-based composite coatings have been reviewed as biocompatible and anti-bacterial coatings. The different composites can be synthesised on the surface of titanium using various methods, which have their own advantages and disadvantages. Moving with the smart and nanotechnology, multifunctional nanocomposite coatings have been introduced on implants and scaffolds for tissue engineering with the aim of providing more than one properties when required. In this context, titanium dioxide (TiO2) nanotubes have been shown to enhance the properties of titanium-based implants as part of nanocomposite coatings.
Collapse
|
6
|
Makvandi P, Gu JT, Zare EN, Ashtari B, Moeini A, Tay FR, Niu LN. Polymeric and inorganic nanoscopical antimicrobial fillers in dentistry. Acta Biomater 2020; 101:69-101. [PMID: 31542502 DOI: 10.1016/j.actbio.2019.09.025] [Citation(s) in RCA: 112] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 07/26/2019] [Accepted: 09/17/2019] [Indexed: 02/08/2023]
Abstract
Failure of dental treatments is mainly due to the biofilm accumulated on the dental materials. Many investigations have been conducted on the advancements of antimicrobial dental materials. Polymeric and inorganic nanoscopical agents are capable of inhibiting microorganism proliferation. Applying them as fillers in dental materials can achieve enhanced microbicidal ability. The present review provides a broad overview on the state-of-the-art research in the field of antimicrobial fillers which have been adopted for incorporation into dental materials over the last 5 years. The antibacterial agents and applications are described, with the aim of providing information for future investigations. STATEMENT OF SIGNIFICANCE: Microbial infection is the primary cause of dental treatment failure. The present review provides an overview on the state-of-art in the field of antimicrobial nanoscopical or polymeric fillers that have been applied in dental materials. Trends in the biotechnological development of these antimicrobial fillers over the last 5 years are reviewed to provide a backdrop for further advancement in this field of research.
Collapse
|
7
|
Yuan Z, Liu P, Liang Y, Tao B, He Y, Hao Y, Yang W, Hu Y, Cai K. Investigation of osteogenic responses of Fe-incorporated micro/nano-hierarchical structures on titanium surfaces. J Mater Chem B 2018; 6:1359-1372. [DOI: 10.1039/c7tb03071a] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Fe incorporated micro/nano topographical titanium substrates are fabricated to synergistically regulate osteogenic responses in vitro and osseointegration in vivo.
Collapse
Affiliation(s)
- Zhang Yuan
- Key Laboratory of Biorheological Science and Technology of Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
- China
| | - Peng Liu
- Key Laboratory of Biorheological Science and Technology of Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
- China
| | - Yanan Liang
- Key Laboratory of Biorheological Science and Technology of Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
- China
| | - Bailong Tao
- Key Laboratory of Biorheological Science and Technology of Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
- China
| | - Ye He
- Key Laboratory of Biorheological Science and Technology of Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
- China
| | - Yansha Hao
- Key Laboratory of Biorheological Science and Technology of Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
- China
| | - Weihu Yang
- Key Laboratory of Biorheological Science and Technology of Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
- China
| | - Yan Hu
- Key Laboratory of Biorheological Science and Technology of Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
- China
| | - Kaiyong Cai
- Key Laboratory of Biorheological Science and Technology of Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
- China
| |
Collapse
|