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Divakarla SK, Yamaguchi S, Kokubo T, Han DW, Lee JH, Chrzanowski W. Improved bioactivity of GUMMETAL ®, Ti 59Nb 36Ta 2Zr 3O 0.3, via formation of nanostructured surfaces. J Tissue Eng 2018; 9:2041731418774178. [PMID: 29796242 PMCID: PMC5956631 DOI: 10.1177/2041731418774178] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 04/09/2018] [Indexed: 11/26/2022] Open
Abstract
The leading reason for implant revision surgery globally is lack of implant integration with surrounding bone. A new titanium alloy GUMMETAL® (Ti59Nb36Ta2Zr3O0.3) is currently used in biomedical devices and has a Young’s modulus that is better matched to bone. The surface was subject to NaOH, CaCl2, heat and water treatment (BioGum) after which the surfaces were evaluated using atomic force microscope, scanning electron microscope, X-ray diffractometer and elemental analysis using energy dispersive X-ray. To demonstrate enhanced bone bonding ability and cytocompatibility, apatite formation in simulated body fluid and in vitro stem cell attachment, proliferation and cytoskeleton organisation were examined. The formation of a ~200 nm nanoscale needle-like calcium titanate network on the surface following treatment was revealed and upon soaking in simulated body fluid, the formation of a ~5 µm layer of apatite. Metabolic activity of rat bone marrow stem cells on BioGum was increased in comparison to control and the cell number appeared greater, with more elongated morphology as early as 2 h post-seeding. This positions the modification as a simple and potentially universal technology for the improvement of implant integration.
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Affiliation(s)
- Shiva Kamini Divakarla
- Faculty of Pharmacy, The University of Sydney, Sydney, NSW, Australia.,The University of Sydney Nano Institute, Sydney, NSW, Australia
| | - Seiji Yamaguchi
- Department of Biomedical Sciences, College of Life and Health Sciences, Chubu University, Kasugai, Japan
| | - Tadashi Kokubo
- Department of Biomedical Sciences, College of Life and Health Sciences, Chubu University, Kasugai, Japan
| | - Dong-Wook Han
- Department of Cogno-Mechatronics Engineering, College of Nanoscience & Nanotechnology, Pusan National University, Busan, Korea
| | - Jae Ho Lee
- CHA Fertility Center, Seoul Station, Seoul, Republic of Korea.,Department of Biomedical Science, College of Life Science, CHA University, Pochen, Republic of Korea
| | - Wojciech Chrzanowski
- Faculty of Pharmacy, The University of Sydney, Sydney, NSW, Australia.,The University of Sydney Nano Institute, Sydney, NSW, Australia
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Arpornmaeklong P, Sutthitrairong C, Jantaramanant P, Pripatnanont P. Allogenic human serum, a clinical grade serum supplement for promoting human periodontal ligament stem cell expansion. J Tissue Eng Regen Med 2017; 12:142-152. [PMID: 27957806 DOI: 10.1002/term.2379] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 11/14/2016] [Accepted: 12/06/2016] [Indexed: 12/24/2022]
Abstract
Exposing human periodontal ligament stem cells (hPDLSCs) to animal proteins during cell expansion would compromise quality and safety of the hPDLSCs for clinical applications. The current study aimed to evaluate the replacement of animal-based serum by human serum for the expansion of hPDLSCs. hPDLSCs were cultured in culture media supplemented with four types of serums: Group A: fetal bovine serum (FBS); Group B: allogeneic human male AB serum (HS); Group C: in-house autologous (Auto-HS); and Group D: in-house allogeneic human serums (Allo-HS). Exhibitions of mesenchymal stem cell characteristics of hPDLSCs were examined. Then, growth and osteogenic (OS) differentiation potential of hPDLSCs in FBS and HS at passages 5 and 15 were compared to investigate the effects of serum supplements on growth and expansion stability of the expanded hPDLSCs. After that, growth and OS differentiation of hPDLSCs in Auto- and Allo-HS were investigated. Flow cytometrical analyses, functional differentiations, cell growth kinetic, cytogenetic analysis, alkaline phosphatase and calcium content assays, and oil red O and von Kossa staining were performed. Results showed that at passage 5, HS promoted growth and OS differentiation of hPDLSCs and extensive cell expansion, decreased growth and differentiation potential of the expanded hPDLSCs, particularly in HS. Growth and OS differentiation of hPDLSCs in Auto-HS and Allo-HS were not different. In summary, allogeneic human serum could be a replacement to FBS for hPDLSC expansion. In vitro cell expansion of hPDLSCs should be minimal to ensure optimal cell quality. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Premjit Arpornmaeklong
- Faculty of Dentistry, Thammasat University, Pathum Thani, Thailand.,CranioMaxillofacial Hard Tissue Engineering Center, Faculty of Dentistry, Prince of Songkla University, Songkhla, Thailand
| | - Chotika Sutthitrairong
- CranioMaxillofacial Hard Tissue Engineering Center, Faculty of Dentistry, Prince of Songkla University, Songkhla, Thailand
| | - Piyathida Jantaramanant
- CranioMaxillofacial Hard Tissue Engineering Center, Faculty of Dentistry, Prince of Songkla University, Songkhla, Thailand
| | - Prisana Pripatnanont
- CranioMaxillofacial Hard Tissue Engineering Center, Faculty of Dentistry, Prince of Songkla University, Songkhla, Thailand
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Wang D, Ding X, Xue W, Zheng J, Tian X, Li Y, Wang X, Song H, Liu H, Luo X. A new scaffold containing small intestinal submucosa and mesenchymal stem cells improves pancreatic islet function and survival in vitro and in vivo. Int J Mol Med 2016; 39:167-173. [PMID: 27909715 PMCID: PMC5179187 DOI: 10.3892/ijmm.2016.2814] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 11/25/2016] [Indexed: 12/23/2022] Open
Abstract
It is unknown whether a scaffold containing both small intestinal submucosa (SIS) and mesenchymal stem cells (MSCs) for transplantation may improve pancreatic islet function and survival. In this study, we examined the effects of a SIS-MSC scaffold on islet function and survival in vitro and in vivo. MSCs and pancreatic islets were isolated from Sprague-Dawley rats, and SIS was isolated from Bamei pigs. The islets were apportioned among 3 experimental groups as follows: SIS-islets, SIS-MSC-islets and control-islets. In vitro, islet function was measured by a glucose-stimulated insulin secretion test; cytokines in cultured supernatants were assessed by enzyme-linked immunosorbent assay; and gene expression was analyzed by reverse transcription-quantitative PCR. In vivo, islet transplantation was performed in rats, and graft function and survival were monitored by measuring the blood glucose levels. In vitro, the SIS-MSC scaffold was associated with improved islet viability and enhanced insulin secretion compared with the controls, as well as with the increased the expression of insulin 1 (Ins1), pancreatic and duodenal homeobox 1 (Pdx1), platelet endothelial cell adhesion molecule 1 [Pecam1; also known as cluster of differentiation 31 (CD31)] and vascular endothelial growth factor A (Vegfa) in the islets, increased growth factor secretion, and decreased tumor necrosis factor (TNF) secretion. In vivo, the SIS-MSC scaffold was associated with improved islet function and graft survival compared with the SIS and control groups. On the whole, our findings demonstrate that the SIS-MSC scaffold significantly improved pancreatic islet function and survival in vitro and in vivo. This improvement may be associated with the upregulation of insulin expression, the improvement of islet microcirculation and the secretion of cytokines.
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Affiliation(s)
- Dan Wang
- Department of Renal Transplantation, Center of Nephropathy, The First Affiliated Hospital, Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Xiaoming Ding
- Department of Renal Transplantation, Center of Nephropathy, The First Affiliated Hospital, Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Wujun Xue
- Department of Renal Transplantation, Center of Nephropathy, The First Affiliated Hospital, Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Jin Zheng
- Department of Renal Transplantation, Center of Nephropathy, The First Affiliated Hospital, Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Xiaohui Tian
- Department of Renal Transplantation, Center of Nephropathy, The First Affiliated Hospital, Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Yang Li
- Department of Renal Transplantation, Center of Nephropathy, The First Affiliated Hospital, Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Xiaohong Wang
- Department of Renal Transplantation, Center of Nephropathy, The First Affiliated Hospital, Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Huanjin Song
- Department of Renal Transplantation, Center of Nephropathy, The First Affiliated Hospital, Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Hua Liu
- Department of Renal Transplantation, Center of Nephropathy, The First Affiliated Hospital, Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Xiaohui Luo
- Department of Renal Transplantation, Center of Nephropathy, The First Affiliated Hospital, Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
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Wang T, Wan Y, Kou Z, Cai Y, Wang B, Liu Z. Construction of a bioactive surface with micro/nano-topography on titanium alloy by micro-milling and alkali-hydrothermal treatment. Proc Inst Mech Eng H 2016. [DOI: 10.1177/0954411916675382] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The surface topography and wettability are important factors that determine the biocompatibility of biomaterials. In this article, the hierarchical micro/nano-topography of titanium alloy surface was fabricated by micro-milling and alkali-hydrothermal reaction. The surface topography and chemical composition of treated surfaces were characterized using laser scanning microscope and scanning electron microscope. The contact angles of surfaces with different micro/nano-topographies were measured by contact angle tester. MC3T3s morphology and osteocalcin productions were characterized to investigate the influence of surface modification on implants’ biocompatibility. The results show that hydrophilicity of micro-structured surface decreased compared to the untextured surface and contact angle values decreased with the increase in micro-groove spacing in small increments. In addition, the surfaces treated with alkali-hydrothermal reaction displayed strong hydrophilicity and the surface energy increased by 40 nJ/cm2 approximately. In vitro tests indicated that micro/nano-structured surface improved the adhesion, spreading, and differentiation of MC3T3s.
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Affiliation(s)
- Teng Wang
- Key Laboratory of High Efficiency and Clean Manufacturing, School of Mechanical Engineering, Shandong University, Jinan, People’s Republic of China
| | - Yi Wan
- Key Laboratory of High Efficiency and Clean Manufacturing, School of Mechanical Engineering, Shandong University, Jinan, People’s Republic of China
| | - Zhaojun Kou
- Key Laboratory of High Efficiency and Clean Manufacturing, School of Mechanical Engineering, Shandong University, Jinan, People’s Republic of China
| | - Yukui Cai
- Key Laboratory of High Efficiency and Clean Manufacturing, School of Mechanical Engineering, Shandong University, Jinan, People’s Republic of China
| | - Bing Wang
- Key Laboratory of High Efficiency and Clean Manufacturing, School of Mechanical Engineering, Shandong University, Jinan, People’s Republic of China
| | - Zhanqiang Liu
- Key Laboratory of High Efficiency and Clean Manufacturing, School of Mechanical Engineering, Shandong University, Jinan, People’s Republic of China
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Vandrovcova M, Jirka I, Novotna K, Lisa V, Frank O, Kolska Z, Stary V, Bacakova L. Interaction of human osteoblast-like Saos-2 and MG-63 cells with thermally oxidized surfaces of a titanium-niobium alloy. PLoS One 2014; 9:e100475. [PMID: 24977704 PMCID: PMC4076233 DOI: 10.1371/journal.pone.0100475] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Accepted: 05/26/2014] [Indexed: 11/19/2022] Open
Abstract
An investigation was made of the adhesion, growth and differentiation of osteoblast-like MG-63 and Saos-2 cells on titanium (Ti) and niobium (Nb) supports and on TiNb alloy with surfaces oxidized at 165°C under hydrothermal conditions and at 600°C in a stream of air. The oxidation mode and the chemical composition of the samples tuned the morphology, topography and distribution of the charge on their surfaces, which enabled us to evaluate the importance of these material characteristics in the interaction of the cells with the sample surface. Numbers of adhered MG-63 and Saos-2 cells correlated with the number of positively-charged (related with the Nb2O5 phase) and negatively-charged sites (related with the TiO2 phase) on the alloy surface. Proliferation of these cells is correlated with the presence of positively-charged (i.e. basic) sites of the Nb2O5 alloy phase, while cell differentiation is correlated with negatively-charged (acidic) sites of the TiO2 alloy phase. The number of charged sites and adhered cells was substantially higher on the alloy sample oxidized at 600°C than on the hydrothermally treated sample at 165°C. The expression values of osteoblast differentiation markers (collagen type I and osteocalcin) were higher for cells grown on the Ti samples than for those grown on the TiNb samples. This was more particularly apparent in the samples treated at 165°C. No considerable immune activation of murine macrophage-like RAW 264.7 cells on the tested samples was found. The secretion of TNF-α by these cells into the cell culture media was much lower than for either cells grown in the presence of bacterial lipopolysaccharide, or untreated control samples. Thus, oxidized Ti and TiNb are both promising materials for bone implantation; TiNb for applications where bone cell proliferation is desirable, and Ti for induction of osteogenic cell differentiation.
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Affiliation(s)
- Marta Vandrovcova
- Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Ivan Jirka
- J. Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Katarina Novotna
- Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Vera Lisa
- Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Otakar Frank
- J. Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Zdenka Kolska
- Faculty of Science, J.E. Purkinje University, Usti nad Labem, Czech Republic
| | - Vladimir Stary
- Faculty of Mechanical Engineering, Czech Technical University in Prague, Prague, Czech Republic
| | - Lucie Bacakova
- Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
- * E-mail:
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