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Unnithan AR, Sasikala ARK. Biomedical Applications of Electrospun Piezoelectric Nanofibrous Scaffolds. ADVANCES IN POLYMER SCIENCE 2023. [DOI: 10.1007/12_2023_144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Swain S, Bowen C, Rautray T. Dual response of osteoblast activity and antibacterial properties of polarized strontium substituted hydroxyapatite-Barium strontium titanate composites with controlled strontium substitution. J Biomed Mater Res A 2021; 109:2027-2035. [PMID: 33825314 DOI: 10.1002/jbm.a.37195] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 03/14/2021] [Accepted: 03/24/2021] [Indexed: 11/09/2022]
Abstract
To mimic the electrical properties of natural bone, controlled strontium substitution of both hydroxyapatite and ferroelectric barium titanate were achieved by mixing in the ratio 30:70 by weight. The composites were characterized by X-ray diffraction, Fourier transform infrared spectroscopy and scanning electron microscopy to investigate the phase composition and microstructure of the composites. Unpolarized and polarized strontium hydroxyapatite (SrHA)-barium strontium titanate (BST) composites with controlled degree of Sr substitution were examined, including 5SrHA-5BST (5% Sr substitution in both components) and 10SrHA-10BST composites. The 10SrHA-10BST composite showed a higher osteoblast activity, as observed from the cell viability studies performed using CCK-8 assay. The polarized composites showed promise against Staphylococcus aureus bacteria by minimizing the adhesion and growth of bacteria, as compared with their unpolarized counterparts. The polarized 10SrHA-10BST was found to be superior than all other composites. As a result, the approach of polarization of SrHA-BST composites has been found to be an effective bone substitute material in controlled enhancement of osteoblast growth with simultaneous reduction of bacterial infection.
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Affiliation(s)
- Subhasmita Swain
- Biomaterials and Tissue Regeneration Laboratory, Centre of Excellence in TM Sciences, Siksha 'O' Anusandhan (Deemed to be University), Khandagiri Square, Bhubaneswar, India, 751030, India
| | - Chris Bowen
- Dept of Mechanical Engineering, University of Bath, Bath, UK
| | - Tapash Rautray
- Biomaterials and Tissue Regeneration Laboratory, Centre of Excellence in TM Sciences, Siksha 'O' Anusandhan (Deemed to be University), Khandagiri Square, Bhubaneswar, India, 751030, India
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Dorozhkin SV. Functionalized calcium orthophosphates (CaPO 4) and their biomedical applications. J Mater Chem B 2019; 7:7471-7489. [PMID: 31738354 DOI: 10.1039/c9tb01976f] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Due to the chemical similarity to natural calcified tissues (bones and teeth) of mammals, calcium orthophosphates (abbreviated as CaPO4) appear to be good biomaterials for creation of artificial bone grafts. However, CaPO4 alone have some restrictions, which limit their biomedical applications. Various ways have been developed to improve the properties of CaPO4 and their functionalization is one of them. Namely, since surfaces always form the interfaces between implanted grafts and surrounding tissues, the state of CaPO4 surfaces plays a crucial role in the survival of bone grafts. Although the biomedically relevant CaPO4 possess the required biocompatible properties, some of their properties could be better. For example, functionalization of CaPO4 to enhance cell attachment and cell material interactions has been developed. In addition, to prepare stable formulations from nanodimensional CaPO4 particles and prevent them from agglomerating, the surfaces of CaPO4 particles are often functionalized by sorption of special chemicals. Furthermore, there are functionalizations in which CaPO4 are exposed to various types of physical treatments. This review summarizes the available knowledge on CaPO4 functionalizations and their biomedical applications.
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Przekora A. Current Trends in Fabrication of Biomaterials for Bone and Cartilage Regeneration: Materials Modifications and Biophysical Stimulations. Int J Mol Sci 2019; 20:E435. [PMID: 30669519 PMCID: PMC6359292 DOI: 10.3390/ijms20020435] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 01/15/2019] [Accepted: 01/18/2019] [Indexed: 12/22/2022] Open
Abstract
The aim of engineering of biomaterials is to fabricate implantable biocompatible scaffold that would accelerate regeneration of the tissue and ideally protect the wound against biodevice-related infections, which may cause prolonged inflammation and biomaterial failure. To obtain antimicrobial and highly biocompatible scaffolds promoting cell adhesion and growth, materials scientists are still searching for novel modifications of biomaterials. This review presents current trends in the field of engineering of biomaterials concerning application of various modifications and biophysical stimulation of scaffolds to obtain implants allowing for fast regeneration process of bone and cartilage as well as providing long-lasting antimicrobial protection at the site of injury. The article describes metal ion and plasma modifications of biomaterials as well as post-surgery external stimulations of implants with ultrasound and magnetic field, providing accelerated regeneration process. Finally, the review summarizes recent findings concerning the use of piezoelectric biomaterials in regenerative medicine.
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Affiliation(s)
- Agata Przekora
- Chair and Department of Biochemistry and Biotechnology, Medical University of Lublin, W. Chodzki 1 Street, 20-093 Lublin, Poland.
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Li H, Ma T, Zhang M, Zhu J, Liu J, Tan F. Fabrication of sulphonated poly(ethylene glycol)-diacrylate hydrogel as a bone grafting scaffold. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2018; 29:187. [PMID: 30535592 DOI: 10.1007/s10856-018-6199-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 11/27/2018] [Indexed: 06/09/2023]
Abstract
To improve the biological performance of poly(ethylene glycol)-diacrylate (PEGDA) hydrogel as an injectable bone grafting scaffold, sodium methallyl sulphonate (SMAS) was incorporated into PEGDA hydrogel. The physiochemical properties of the resultant polymers were assessed via Fourier transform infrared spectroscopy (FTIR), swelling ratio, zeta potential, surface morphology, and protein adsorption analysis. MC3T3-E1 cells were seeded on the hydrogel to evaluate the effect of the sulphonated modification on their attachment, proliferation, and differentiation. The results of FTIR and zeta potential evaluations revealed that SMAS was successfully incorporated into PEGDA. With increasing concentrations of SMAS, the swelling ratio of the hydrogels increased in deionized water but stayed constant in phosphate buffered saline. The protein adsorption also increased with increasing concentration of SMAS. Moreover, the sulphonated modification of PEGDA hydrogel not only enhanced the attachment and proliferation of osteoblast-like MC3T3-E1 cells but also up-regulated alkaline phosphatase activity as well as gene expression of osteogenic markers and related growth factors, including collagen type I, osteocalcin, runt related transcription factor 2, bone morphogenetic protein 2, and transforming growth factor beta 1. These findings indicate that the sulphonated modification could significantly improve the biological performance of PEGDA hydrogel. Thus, the sulphonated PEGDA is a promising scaffold candidate for bone grafting.
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Affiliation(s)
- Hao Li
- Department of Prosthodontics, the Affiliated Hospital of Qingdao University, Qingdao University, 266003, Qingdao, People's Republic of China
| | - Tingting Ma
- Department of Prosthodontics, the Affiliated Hospital of Qingdao University, Qingdao University, 266003, Qingdao, People's Republic of China
| | - Man Zhang
- Department of Prosthodontics, the Affiliated Hospital of Qingdao University, Qingdao University, 266003, Qingdao, People's Republic of China
| | - Jiani Zhu
- Department of Prosthodontics, the Affiliated Hospital of Qingdao University, Qingdao University, 266003, Qingdao, People's Republic of China
| | - Jie Liu
- Department of Prosthodontics, the Affiliated Hospital of Qingdao University, Qingdao University, 266003, Qingdao, People's Republic of China
| | - Fei Tan
- Department of Prosthodontics, the Affiliated Hospital of Qingdao University, Qingdao University, 266003, Qingdao, People's Republic of China.
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Piezoelectric materials as stimulatory biomedical materials and scaffolds for bone repair. Acta Biomater 2018; 73:1-20. [PMID: 29673838 DOI: 10.1016/j.actbio.2018.04.026] [Citation(s) in RCA: 131] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 03/19/2018] [Accepted: 04/15/2018] [Indexed: 12/14/2022]
Abstract
The process of bone repair and regeneration requires multiple physiological cues including biochemical, electrical and mechanical - that act together to ensure functional recovery. Myriad materials have been explored as bioactive scaffolds to deliver these cues locally to the damage site, amongst these piezoelectric materials have demonstrated significant potential for tissue engineering and regeneration, especially for bone repair. Piezoelectric materials have been widely explored for power generation and harvesting, structural health monitoring, and use in biomedical devices. They have the ability to deform with physiological movements and consequently deliver electrical stimulation to cells or damaged tissue without the need of an external power source. Bone itself is piezoelectric and the charges/potentials it generates in response to mechanical activity are capable of enhancing bone growth. Piezoelectric materials are capable of stimulating the physiological electrical microenvironment, and can play a vital role to stimulate regeneration and repair. This review gives an overview of the association of piezoelectric effect with bone repair, and focuses on state-of-the-art piezoelectric materials (polymers, ceramics and their composites), the fabrication routes to produce piezoelectric scaffolds, and their application in bone repair. Important characteristics of these materials from the perspective of bone tissue engineering are highlighted. Promising upcoming strategies and new piezoelectric materials for this application are presented. STATEMENT OF SIGNIFICANCE Electrical stimulation/electrical microenvironment are known effect the process of bone regeneration by altering the cellular response and are crucial in maintaining tissue functionality. Piezoelectric materials, owing to their capability of generating charges/potentials in response to mechanical deformations, have displayed great potential for fabricating smart stimulatory scaffolds for bone tissue engineering. The growing interest of the scientific community and compelling results of the published research articles has been the motivation of this review article. This article summarizes the significant progress in the field with a focus on the fabrication aspects of piezoelectric materials. The review of both material and cellular aspects on this topic ensures that this paper appeals to both material scientists and tissue engineers.
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Kumar S, Stokes JA, Dean D, Rogers C, Nyairo E, Thomas V, Mishra MK. Biphasic organo-bioceramic fibrous composite as a biomimetic extracellular matrix for bone tissue regeneration. Front Biosci (Elite Ed) 2017; 9:192-203. [PMID: 28199184 DOI: 10.2741/e795] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In bone tissue engineering, the organo-ceramic composite, electrospun polycaprolactone/hydroxyapatite (PCL/HA) scaffold has the potential to support cell proliferation, migration, differentiation, and homeostasis. Here, we report the effect of PCL/HA scaffold in tissue regeneration using human mesenchymal stem cells (hMSCs). We characterized the scaffold by fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), scanning electron microscope (SEM) and assessed its biocompatibility. PCL/HA composite is superior as a scaffold compared to PCL alone. Furthermore, increasing HA content (5-10%) was more efficacious in supporting cell-scaffold attachment, expression of ECM molecules and proliferation. These results suggest that PCL/HA is useful as a scaffold for tissue regeneration.
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Affiliation(s)
- Sanjay Kumar
- Cancer Biology Research and Training Program, Department of Biological Sciences ,Alabama State University, Montgomery, AL 36104, USA
| | - James A Stokes
- Cancer Biology Research and Training Program, Department of Biological Sciences,Alabama State University, Montgomery, AL 36104, USA
| | - Derrick Dean
- Biomedical Engineering, Alabama State University, Montgomery, AL 36104, USA
| | - Christian Rogers
- Physical Sciences, Alabama State University, Montgomery, AL 36104, USA
| | - Elijah Nyairo
- Physical Sciences, Alabama State University, Montgomery, AL 36104, USA
| | - Vinoy Thomas
- Department of Material Science and Engineering, University of Alabama, Birmingham, AL USA
| | - Manoj K Mishra
- Cancer Biology Research and Training Program, Department of Biological Sciences, Alabama State University, 915 S Jackson Street, Montgomery, AL 36104,
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Orthopedic implant biomaterials with both osteogenic and anti-infection capacities and associated in vivo evaluation methods. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 13:123-142. [DOI: 10.1016/j.nano.2016.08.003] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 06/23/2016] [Accepted: 08/02/2016] [Indexed: 12/30/2022]
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Shearer T, Bradley RS, Hidalgo-Bastida LA, Sherratt MJ, Cartmell SH. Three-dimensional visualisation of soft biological structures by X-ray computed micro-tomography. J Cell Sci 2016; 129:2483-92. [PMID: 27278017 DOI: 10.1242/jcs.179077] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Whereas the two-dimensional (2D) visualisation of biological samples is routine, three-dimensional (3D) imaging remains a time-consuming and relatively specialised pursuit. Current commonly adopted techniques for characterising the 3D structure of non-calcified tissues and biomaterials include optical and electron microscopy of serial sections and sectioned block faces, and the visualisation of intact samples by confocal microscopy or electron tomography. As an alternative to these approaches, X-ray computed micro-tomography (microCT) can both rapidly image the internal 3D structure of macroscopic volumes at sub-micron resolutions and visualise dynamic changes in living tissues at a microsecond scale. In this Commentary, we discuss the history and current capabilities of microCT. To that end, we present four case studies to illustrate the ability of microCT to visualise and quantify: (1) pressure-induced changes in the internal structure of unstained rat arteries, (2) the differential morphology of stained collagen fascicles in tendon and ligament, (3) the development of Vanessa cardui chrysalises, and (4) the distribution of cells within a tissue-engineering construct. Future developments in detector design and the use of synchrotron X-ray sources might enable real-time 3D imaging of dynamically remodelling biological samples.
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Affiliation(s)
- Tom Shearer
- School of Materials, University of Manchester, Manchester M13 9PL, UK School of Mathematics, University of Manchester, Manchester M13 9PL, UK
| | - Robert S Bradley
- Henry Moseley X-ray Imaging Facility, School of Materials, University of Manchester, Manchester M13 9PL, UK
| | | | - Michael J Sherratt
- Institute of Inflammation and Repair, University of Manchester, Manchester M13 9PL, UK
| | - Sarah H Cartmell
- School of Materials, University of Manchester, Manchester M13 9PL, UK
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Liu J, Cheng F, Grénman H, Spoljaric S, Seppälä J, E Eriksson J, Willför S, Xu C. Development of nanocellulose scaffolds with tunable structures to support 3D cell culture. Carbohydr Polym 2016; 148:259-71. [PMID: 27185139 DOI: 10.1016/j.carbpol.2016.04.064] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 04/02/2016] [Accepted: 04/14/2016] [Indexed: 11/26/2022]
Abstract
Swollen three-dimensional nanocellulose films and their resultant aerogels were prepared as scaffolds towards tissue engineering application. The nanocellulose hydrogels with various swelling degree (up to 500 times) and the resultant aerogels with desired porosity (porosity up to 99.7% and specific surface area up to 308m(2)/g) were prepared by tuning the nanocellulose charge density, the swelling media conditions, and the material processing approach. Representative cell-based assays were applied to assess the material biocompatibility and efficacy of the human extracellular matrix (ECM)-mimicking nanocellulose scaffolds. The effects of charge density and porosity of the scaffolds on the biological tests were investigated for the first time. The results reveal that the nanocellulose scaffolds could promote the survival and proliferation of tumor cells, and enhance the transfection of exogenous DNA into the cells. These results suggest the usefulness of the nanocellulose-based matrices in supporting crucial cellular processes during cell growth and proliferation.
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Affiliation(s)
- Jun Liu
- Johan Gadolin Process Chemistry Centre, c/o Laboratory Wood and Paper Chemistry, Åbo Akademi University, Porthansgatan 3, Åbo/Turku, 20500, Finland.
| | - Fang Cheng
- Department of Biosciences, Åbo Akademi University, Turku, 20520, Finland; Turku Centre for Biotechnology, University of Turku and Åbo Akademi University, Turku, 20521, Finland
| | - Henrik Grénman
- Johan Gadolin Process Chemistry Centre, Laboratory of Industrial Chemistry and Reaction Engineering, Åbo Akademi University, Biskopsgatan 8, Åbo/Turku, 20500, Finland
| | - Steven Spoljaric
- Polymer Technology, Department of Biotechnology and Chemical Technology, Aalto University School of Chemical Technology, P.O. Box 16100, Aalto, 00076, Finland
| | - Jukka Seppälä
- Polymer Technology, Department of Biotechnology and Chemical Technology, Aalto University School of Chemical Technology, P.O. Box 16100, Aalto, 00076, Finland
| | - John E Eriksson
- Department of Biosciences, Åbo Akademi University, Turku, 20520, Finland; Turku Centre for Biotechnology, University of Turku and Åbo Akademi University, Turku, 20521, Finland
| | - Stefan Willför
- Johan Gadolin Process Chemistry Centre, c/o Laboratory Wood and Paper Chemistry, Åbo Akademi University, Porthansgatan 3, Åbo/Turku, 20500, Finland
| | - Chunlin Xu
- Johan Gadolin Process Chemistry Centre, c/o Laboratory Wood and Paper Chemistry, Åbo Akademi University, Porthansgatan 3, Åbo/Turku, 20500, Finland.
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Han KS, Song JE, Kang SJ, Lee D, Khang G. Effect of demineralized bone particle/poly(lactic-co-glycolic acid) scaffolds on the attachment and proliferation of mesenchymal stem cells. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2014; 26:92-110. [DOI: 10.1080/09205063.2014.982930] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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