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Kang H, Niu L, Zhang F, Qing C, Dong M, Guan L, Zhang M, Liu Z. A Novel Piezoelectric Nonwoven Fabric for Recoverable High-Efficiency Filters. ACS APPLIED MATERIALS & INTERFACES 2024; 16:54566-54573. [PMID: 39344529 DOI: 10.1021/acsami.4c10922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/01/2024]
Abstract
Serious haze pollution, mainly caused by fine and ultrafine particulate matters (PMs) and aerosols, poses a significant threat to the public health, especially when the aerodynamic diameter is less than 2.5 μm. Electrostatic capture techniques, such as polymer electret filters and kinetic plasma processes, are widely used instead of mechanical filtration with high removal efficiency and low wind resistance (pressure drop). However, the inability to recharge, coupled with the generation of ozone byproducts, makes it challenging to meet the requirements for both recoverability and highly efficient filtration. Here, we propose an electrostatic filter as an alternative to conventional polymer electrets, aiming to achieve an ultrahigh removal efficiency, long-term performance stability, and reusability. Piezoelectric LiNbO3 (LN) particles are integrated into the polypropylene (PP) matrix through the melt-blown strategy to fabricate the LN/PP nonwoven fabric. Benefiting from the employment of piezoelectric LN particles, the LN/PP nonwovens exhibit an ultrahigh removal efficiency of 99.9% for PM0.3 to PM10. The airflow facilitates the sustained regeneration of piezoelectric charges on the surface of LN/PP nonwovens, thereby maintaining a removal efficiency of approximately 95% for continuous filtration over 11 days. Even after eight cycles of washing, the removal efficiency of the LN/PP nonwovens remains at nearly 90%, demonstrating the excellent reusability. Our proposed strategy offers an ingenious combination of high-efficiency and recoverability for filters, holding great promise for reducing plastic pollution.
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Affiliation(s)
- Hua Kang
- School of Chemistry and Life Resources, Renmin University of China, Beijing 100872, China
- Laboratory of Flexible Electronics Technology, Key Laboratory of Organic Optoelectronics & Molecular Engineering, Ministry of Education, Department of Chemistry, State Key Laboratory of Tribology in Advanced Equipment (SKLT), Laboratory of Flexible Electronics Technology, Tsinghua University, Beijing 100084, China
| | - Lin Niu
- School of Materials Science & Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Fan Zhang
- School of Chemistry and Life Resources, Renmin University of China, Beijing 100872, China
| | - Chenglin Qing
- School of Chemistry and Life Resources, Renmin University of China, Beijing 100872, China
| | - Mingdong Dong
- Interdisciplinary Nanoscience Center (iNANO), University of Aarhus, DK-8000 Aarhus C, Denmark
| | - Li Guan
- School of Chemistry and Life Resources, Renmin University of China, Beijing 100872, China
| | - Meining Zhang
- School of Chemistry and Life Resources, Renmin University of China, Beijing 100872, China
| | - Zheng Liu
- School of Materials Science & Engineering, Nanyang Technological University, Singapore 639798, Singapore
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Zamboni R, Gauthier-Manuel L, Zaltron A, Lucchetti L, Chauvet M, Sada C. Opto-microfluidic coupling between optical waveguides and tilted microchannels in lithium niobate. OPTICS EXPRESS 2023; 31:28423-28436. [PMID: 37710896 DOI: 10.1364/oe.495406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 07/05/2023] [Indexed: 09/16/2023]
Abstract
This work presents a reconfigurable opto-microfluidic coupling between optical waveguides and tilted microfluidic channels in monolithic lithium niobate crystal. The light path connecting two waveguide arrays located on opposite sides of a microfluidic channel depends on the refractive index between the liquid phase and the hosting crystal. As a result, the optical properties of the flowing fluid, which is pumped into the microfluidic channel on demand, can be exploited to control the light pathways inside the optofluidic device. Proof-of-concept applications are herein presented, including microfluidic optical waveguide switching, optical refractive index sensing, and wavelength demultiplexing.
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Polley C, Distler T, Scheufler C, Detsch R, Lund H, Springer A, Schneidereit D, Friedrich O, Boccaccini AR, Seitz H. 3D printing of piezoelectric and bioactive barium titanate-bioactive glass scaffolds for bone tissue engineering. Mater Today Bio 2023; 21:100719. [PMID: 37529217 PMCID: PMC10387613 DOI: 10.1016/j.mtbio.2023.100719] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 06/26/2023] [Accepted: 06/29/2023] [Indexed: 08/03/2023] Open
Abstract
Bone healing is a complex process orchestrated by various factors, such as mechanical, chemical and electrical cues. Creating synthetic biomaterials that combine several of these factors leading to tailored and controlled tissue regeneration, is the goal of scientists worldwide. Among those factors is piezoelectricity which creates a physiological electrical microenvironment that plays an important role in stimulating bone cells and fostering bone regeneration. However, only a limited number of studies have addressed the potential of combining piezoelectric biomaterials with state-of-the-art fabrication methods to fabricate tailored scaffolds for bone tissue engineering. Here, we present an approach that takes advantage of modern additive manufacturing techniques to create macroporous biomaterial scaffolds based on a piezoelectric and bioactive ceramic-crystallised glass composite. Using binder jetting, scaffolds made of barium titanate and 45S5 bioactive glass are fabricated and extensively characterised with respect to their physical and functional properties. The 3D-printed ceramic-crystallised glass composite scaffolds show both suitable mechanical strength and bioactive behaviour, as represented by the accumulation of bone-like calcium phosphate on the surface. Piezoelectric scaffolds that mimic or even surpass bone with piezoelectric constants ranging from 1 to 21 pC/N are achieved, depending on the composition of the composite. Using MC3T3-E1 osteoblast precursor cells, the scaffolds show high cytocompatibility coupled with cell attachment and proliferation, rendering the barium titanate/45S5 ceramic-crystallised glass composites promising candidates for bone tissue engineering.
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Affiliation(s)
| | - Thomas Distler
- Institute of Biomaterials, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | | | - Rainer Detsch
- Institute of Biomaterials, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Henrik Lund
- Leibniz Institute for Catalysis, Rostock, Germany
| | - Armin Springer
- Electron Microscopy Centrum, University Hospital Rostock, Germany
- Department Life, Light & Matter, University of Rostock, Rostock, Germany
| | - Dominik Schneidereit
- Institute of Medical Biotechnology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Oliver Friedrich
- Institute of Medical Biotechnology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Aldo R. Boccaccini
- Institute of Biomaterials, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Hermann Seitz
- Chair of Microfluidics, University of Rostock, Rostock, Germany
- Department Life, Light & Matter, University of Rostock, Rostock, Germany
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Li Y, Meng Y, Bai Y, Wang Y, Wang J, Heng B, Wei J, Jiang X, Gao M, Zheng X, Zhang X, Deng X. Restoring the electrical microenvironment using ferroelectric nanocomposite membranes to enhance alveolar ridge regeneration in a mini-pig preclinical model. J Mater Chem B 2023; 11:985-997. [PMID: 36520085 DOI: 10.1039/d2tb02054h] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The maintenance and incremental growth of the alveolar bone at the tooth extraction site, to achieve the required height and width for implant restoration, remains a major clinical challenge. Here, the concept of restoring the electrical microenvironment to improve the effects of alveolar ridge preservation (ARP) was investigated in a mini-pig preclinical model. The endogeneous electrical microenvironment of the dental alveolar socket was recapitulated by fabricating a biomimetic ferroelectric BaTiO3/poly(vinylidene fluoridetrifluoroethylene) (BTO/P(VDF-TrFE)) non-resorbable nanocomposite membrane polarized by corona poling. The polarized nanocomposite membrane exhibited excellent electrical stability. After implantation with bone grafts and covering with the charged membrane in tooth extraction sites for three months, both the vertical and horizontal dimension resorption of the alveolar ridge were significantly prevented, as assessed by cone beam computed tomography (CBCT) analyses. Micro-CT analysis showed that the charged membrane induced significant enhancement of newly regenerated bone at the tooth extraction sites. Histological analysis further confirmed that the restoration of the electrical microenvironment significantly promoted buccal alveolar bone regeneration and maturation. In addition, the charged membranes can maintain their structural integrity during the entire implantation period and exhibit positive long-term systemic safety, as assessed by preclinical sub-chronic systemic toxicity. These findings thus provide an innovative strategy for restoring the electrical microenvironment to enhance ARP following dentition defect and edentulism, which could further advance prosthodontics implant technology.
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Affiliation(s)
- Yiping Li
- Department of Dental Materials & Dental Medical Devices Testing Center, Peking University School and Hospital of Stomatology, Beijing, 100081, P. R. China. .,Department of Prosthodontics, Xiangya Stomatological Hospital & School of Stomatology, Central South University, Changsha, 410078, P. R. China.,Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, 100081, P. R. China.
| | - Yanze Meng
- Department of Dental Materials & Dental Medical Devices Testing Center, Peking University School and Hospital of Stomatology, Beijing, 100081, P. R. China.
| | - Yunyang Bai
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, 100081, P. R. China.
| | - Yijun Wang
- Department of Dental Materials & Dental Medical Devices Testing Center, Peking University School and Hospital of Stomatology, Beijing, 100081, P. R. China.
| | - Jiaqi Wang
- Department of Prosthodontics, Xiangya Stomatological Hospital & School of Stomatology, Central South University, Changsha, 410078, P. R. China
| | - Boonchin Heng
- Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, 100081, P. R. China
| | - Jinqi Wei
- First Clinical Division, Peking University School and Hospital of Stomatology, Beijing, 100081, P. R. China
| | - Xi Jiang
- Department of Oral Implantology, Peking University School and Hospital of Stomatology, Beijing, 100081, P. R. China
| | - Min Gao
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, 100081, P. R. China. .,National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, NMPA Key Laboratory for Dental Materials, Beijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China
| | - Xiaona Zheng
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, 100081, P. R. China. .,National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, NMPA Key Laboratory for Dental Materials, Beijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China
| | - Xuehui Zhang
- Department of Dental Materials & Dental Medical Devices Testing Center, Peking University School and Hospital of Stomatology, Beijing, 100081, P. R. China. .,National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, NMPA Key Laboratory for Dental Materials, Beijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China
| | - Xuliang Deng
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, 100081, P. R. China. .,National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, NMPA Key Laboratory for Dental Materials, Beijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China
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Farmani AR, Nekoofar MH, Ebrahimi-Barough S, Azami M, Najafipour S, Moradpanah S, Ai J. Preparation and In Vitro Osteogenic Evaluation of Biomimetic Hybrid Nanocomposite Scaffolds Based on Gelatin/Plasma Rich in Growth Factors (PRGF) and Lithium-Doped 45s5 Bioactive Glass Nanoparticles. JOURNAL OF POLYMERS AND THE ENVIRONMENT 2022; 31:870-885. [PMID: 36373108 PMCID: PMC9638231 DOI: 10.1007/s10924-022-02615-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Accepted: 09/26/2022] [Indexed: 06/16/2023]
Abstract
Bone tissue engineering is an emerging technique for repairing large bone lesions. Biomimetic techniques expand the use of organic-inorganic spongy-like nanocomposite scaffolds and platelet concentrates. In this study, a biomimetic nanocomposite scaffold was prepared using lithium-doped bioactive-glass nanoparticles and gelatin/PRGF. First, sol-gel method was used to prepare bioactive-glass nanoparticles that contain 0, 1, 3, and 5%wt lithium. The lithium content was then optimized based on antibacterial and MTT testing. By freeze-drying, hybrid scaffolds comprising 5, 10, and 20% bioglass were made. On the scaffolds, human endometrial stem cells (hEnSCs) were cultured for adhesion (SEM), survival, and osteogenic differentiation. Alkaline phosphatase activity and osteopontin, osteocalcin, and Runx2 gene expression were measured. The effect of bioactive-glass nanoparticles and PRGF on nanocomposites' mechanical characteristics and glass-transition temperature (T g) was also studied. An optimal lithium content in bioactive glass structure was found to be 3% wt. Nanoparticle SEM examination indicated grain deformation due to different sizes of lithium and sodium ions. Results showed up to 10% wt bioactive-glass and PRGF increased survival and cell adhesion. Also, Hybrid scaffolds revealed higher ALP-activity and OP, OC, and Runx2 gene expression. Furthermore, bioactive-glass has mainly increased ALP-activity and Runx2 expression, whereas PRGF increases the expression of OP and OC genes. Bioactive-glass increases scaffold modulus and T g continuously. Hence, the presence of both bioactive-glass and nanocomposite scaffold improves the expression of osteogenic differentiation biomarkers. Subsequently, it seems that hybrid scaffolds based on biopolymers, Li-doped bioactive-glass, and platelet extracts can be a good strategy for bone repair.
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Affiliation(s)
- Ahmad Reza Farmani
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Fasa University of Medical Sciences, Fasa, Iran
- Students’ Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Hossein Nekoofar
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Department of Endodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
- Department of Endodontics, School of Dentistry, Bahçeşehir University, Istanbul, Turkey
| | - Somayeh Ebrahimi-Barough
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahmoud Azami
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Sohrab Najafipour
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Fasa University of Medical Sciences, Fasa, Iran
- Department of Microbiology, School of Medicine, Fasa University of Medical Sciences, Fasa, Iran
| | - Somayeh Moradpanah
- Department of Obstetrics and Gynecology, Ziaeian Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Jafar Ai
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
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Influence of P(VDF-TrFE) Membranes with Different Surface Potentials on the Activity and Angiogenic Function of Human Umbilical Vein Endothelial Cells. BIOMED RESEARCH INTERNATIONAL 2022; 2022:5693994. [PMID: 36199755 PMCID: PMC9529516 DOI: 10.1155/2022/5693994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 09/01/2022] [Accepted: 09/06/2022] [Indexed: 11/18/2022]
Abstract
During bone tissue regeneration, neovascularization is critical, and the formation of a blood supply network is crucial for bone growth stimulation and remodeling. Previous studies suggest that bioelectric signals facilitate the process of angiogenesis. Owing to their biomimetic electroactivity, piezoelectric membranes have garnered substantial interest in the field of guided bone regeneration. Nevertheless, the knowledge of their influence due to varying surface potentials on the progression of angiogenesis remains ambiguous. Therefore, we proposed the preparation of an electroactive material, P(VDF-TrFE), and investigated its effects on the activity and angiogenic functions of human umbilical vein endothelial cells (HUVECs). The HUVECs were directly cultured on P(VDF-TrFE) membranes with different surface potentials. Subsequently, cell viability, proliferation, migration, tube formation, and expressions of related factors were assessed through appropriate assays. Our results revealed that the negative surface potential groups exerted differential effects on the modulation of angiogenesis in vitro. The P(VDF-TrFE) membranes with negative surface potential exhibited the greatest effect on cellular behaviors, including proliferation, migration, tube formation, and promotion of angiogenesis by releasing key factors such as VEGF-A and CD31. Overall, these results indicated that the surface potential of piezoelectric P(VDF-TrFE) membranes could exert differential effects on angiogenesis in vitro. We present a novel approach for designing bioactive materials for guided bone regeneration.
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7
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Wang P, Zhou X, Lv C, Wang Y, Wang Z, Wang L, Zhu Y, Guo M, Zhang P. Modulating the surface potential of microspheres by phase transition in strontium doped barium titanate to restore the electric microenvironment for bone regeneration. Front Bioeng Biotechnol 2022; 10:988300. [PMID: 36110316 PMCID: PMC9468715 DOI: 10.3389/fbioe.2022.988300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 08/08/2022] [Indexed: 11/13/2022] Open
Abstract
The endogenous electrical potential generated by native bone and periosteum plays a key role in maintaining bone mass and quality. Inspired by the electrical properties of bone, different negative surface potentials are built on microspheres to restore electric microenvironment for powerful bone regeneration, which was prepared by the combination of strontium-doped barium titanate (Sr-BTO) nanoparticles and poly (lactic-co-glycolic acid) (PLGA) with high electrostatic voltage field (HEV). The surface potential was modulated through regulating the phase composition of nanoparticles in microspheres by the doping amount of strontium ion (Sr2+). As a result, the 0.1Sr-BTO/PLGA group shows the lowest surface potential and its relative permittivity is closer to natural bone. As expected, the 0.1Sr-BTO/PLGA microspheres performed cytocompatibility, osteogenic activity in vitro and enhance bone regeneration in vivo. Furthermore, the potential mechanism of Sr-BTO/PLGA microspheres to promote osteogenic differentiation was further explored. The lower surface potential generated on Sr-BTO/PLGA microspheres regulates cell membrane potential and leads to an increase in the intracellular calcium ion (Ca2+) concentration, which could activate the Calcineurin (CaN)/Nuclear factor of activated T-cells (NFAT) signaling pathway to promote osteogenic differentiation. This study established an effective method to modulate the surface potential, which provides a prospective exploration for electrical stimulation therapy. The 0.1Sr-BTO/PLGA microsphere with lower surface potential and bone-matched dielectric constant is expected to have great potential in the field of bone regeneration.
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Affiliation(s)
- Peng Wang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, China
| | - Xiaosong Zhou
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, China
| | - Caili Lv
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, China
| | - Yu Wang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
| | - Zongliang Wang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
| | - Liqiang Wang
- Department of Ophthalmology, Third Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Yongzhan Zhu
- 8th Department of Orthopaedics, Foshan Hospital of Traditional Chinese Medicine, Foshan, China
| | - Min Guo
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
- *Correspondence: Peibiao Zhang, ; Min Guo,
| | - Peibiao Zhang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, China
- *Correspondence: Peibiao Zhang, ; Min Guo,
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8
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Neuron Compatibility and Antioxidant Activity of Barium Titanate and Lithium Niobate Nanoparticles. Int J Mol Sci 2022; 23:ijms23031761. [PMID: 35163681 PMCID: PMC8836423 DOI: 10.3390/ijms23031761] [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] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/26/2022] [Accepted: 02/01/2022] [Indexed: 12/14/2022] Open
Abstract
The biocompatibility and the antioxidant activity of barium titanate (BaTiO3) and lithium niobate (LiNbO3) were investigated on a neuronal cell line, the PC12, to explore the possibility of using piezoelectric nanoparticles in the treatment of inner ear diseases, avoiding damage to neurons, the most delicate and sensitive human cells. The cytocompatibility of the compounds was verified by analysing cell viability, cell morphology, apoptotic markers, oxidative stress and neurite outgrowth. The results showed that BaTiO3 and LiNbO3 nanoparticles do not affect the viability, morphological features, cytochrome c distribution and production of reactive oxygen species (ROS) by PC12 cells, and stimulate neurite branching. These data suggest the biocompatibility of BaTiO3 and LiNbO3 nanoparticles, and that they could be suitable candidates to improve the efficiency of new implantable hearing devices without damaging the neuronal cells.
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Mi Y, Liu X, Gao Z, Wang M, Shi L, Zhang X, Gao K, Mugisha ER, Yan W. 3D Photovoltaic Router of Water Microdroplets Aiming at Free-Space Microfluidic Transportation. ACS APPLIED MATERIALS & INTERFACES 2021; 13:45018-45032. [PMID: 34482685 DOI: 10.1021/acsami.1c10940] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
So far, microfluidic navigation based on space-charge modulation is limited in a two-dimensional (2D) substrate plane. In this paper, a three-dimensional (3D) photovoltaic water-microdroplet router based on a superhydrophobic LiNbO3:Fe crystal is reported. This router employs the repulsive electrostatic force induced by the positive photovoltaic charges generated under focused laser illumination and permits traveling microdroplets to be routed in both in-plane and out-of-plane ways. By analyzing the dynamic process of microdroplet routing, it is found that the microdroplets can gain positive charges through traveling on a superhydrophobic surface and that the positive photovoltaic charges exert an electrophoretic (EP) force on the microdroplets being charged and make them either routed inside the 2D substrate plane or jump out of the 2D plane through electrostatic ballistic ejection. The laser-illumination and microdroplet-size dependence of the deflecting parameters of the in-plane microdroplet routing as well as the jumping trajectory of the out-of-plane routing are investigated. An electrostatic kinetic model is established for both routing ways, and the simulation based on this model predicts well the experimental dependence. A few examples of cascaded free-space microfluidic transportation using the 3D photovoltaic router are demonstrated, showing the potential of this technique in future biological applications.
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Affiliation(s)
- Yuhang Mi
- School of Materials Science and Engineering, Hebei Engineering Laboratory of PFC, Hebei University of Technology, Tianjin 300130, China
| | - Xiaohu Liu
- School of Materials Science and Engineering, Hebei Engineering Laboratory of PFC, Hebei University of Technology, Tianjin 300130, China
| | - Zuoxuan Gao
- School of Materials Science and Engineering, Hebei Engineering Laboratory of PFC, Hebei University of Technology, Tianjin 300130, China
| | - Mengtong Wang
- School of Materials Science and Engineering, Hebei Engineering Laboratory of PFC, Hebei University of Technology, Tianjin 300130, China
| | - Lihong Shi
- Department of Physics, Tianjin Chengjian University, Tianjin 300384, China
| | - Xiong Zhang
- School of Materials Science and Engineering, Hebei Engineering Laboratory of PFC, Hebei University of Technology, Tianjin 300130, China
| | - Kaifang Gao
- School of Materials Science and Engineering, Hebei Engineering Laboratory of PFC, Hebei University of Technology, Tianjin 300130, China
| | - Euphrem Rwagasore Mugisha
- School of Materials Science and Engineering, Hebei Engineering Laboratory of PFC, Hebei University of Technology, Tianjin 300130, China
| | - Wenbo Yan
- School of Materials Science and Engineering, Hebei Engineering Laboratory of PFC, Hebei University of Technology, Tianjin 300130, China
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Ali RF, Guo I, Kang H, Radford MJ, Yapp DT, Gates BD. Tuning the Surface Chemistry of Second-Harmonic-Active Lithium Niobate Nanoprobes Using a Silanol-Alcohol Condensation Reaction. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:7689-7700. [PMID: 34128677 DOI: 10.1021/acs.langmuir.1c00645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The surface functionalization of nanoparticles (NPs) is of great interest for improving the use of NPs in, for example, therapeutic and diagnostic applications. The conjugation of specific molecules with NPs through the formation of covalent linkages is often sought to provide a high degree of colloidal stability and biocompatibility, as well as to provide functional groups for further surface modification. NPs of lithium niobate (LiNbO3) have been explored for use in second-harmonic-generation (SHG)-based bioimaging, expanding the applications of SHG-based microscopy techniques. The efficient use of SHG-active LiNbO3 NPs as probes will, however, require the functionalization of their surfaces with molecular reagents such as polyethylene glycol and fluorescent molecules to enhance their colloidal and chemical stability and to enable a correlative imaging platform. Herein, we demonstrate the surface functionalization of LiNbO3 NPs through the covalent attachment of alcohol-based reagents through a silanol-alcohol condensation reaction. Alcohol-based reagents are widely available and can have a range of terminal functional groups such as carboxylic acids, amines, and aldehydes. Attaching these molecules to NPs through the silanol-alcohol condensation reaction could diversify the reagents available to modify NPs, but this reaction pathway must first be established as a viable route to modifying NPs. This study focuses on the attachment of a linear alcohol functionalized with carboxylic acid and its use as a reactive group to further tune the surface chemistry of LiNbO3 NPs. These carboxylic acid groups were reacted to covalently attach other molecules to the NPs using copper-free click chemistry. This derivatization of the NPs provided a means to covalently attach polyethylene glycols and fluorescent probes to the NPs, reducing NP aggregation and enabling multimodal tracking of SHG nanoprobes, respectively. This extension of the silanol-alcohol condensation reaction to functionalize the surfaces of LiNbO3 NPs can be extended to other types of nanoprobes for use in bioimaging, biosensing, and photodynamic therapies.
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Affiliation(s)
- Rana Faryad Ali
- Department of Chemistry and 4D LABS, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada
| | - Iris Guo
- Department of Chemistry and 4D LABS, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada
| | - Henry Kang
- Department of Chemistry and 4D LABS, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada
| | - Melissa J Radford
- Department of Chemistry and 4D LABS, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada
| | - Donald T Yapp
- British Columbia Cancer Agency, 675 West 10th Avenue, Vancouver BC V5Z 1L3, Canada
| | - Byron D Gates
- Department of Chemistry and 4D LABS, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada
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Ali RF, Gates BD. Elucidating the role of precursors in synthesizing single crystalline lithium niobate nanomaterials: a study of effects of lithium precursors on nanoparticle quality. NANOSCALE 2021; 13:3214-3226. [PMID: 33528486 DOI: 10.1039/d0nr08652e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A number of solution-based procedures have been realized for the synthesis of lithium niobate (LiNbO3) nanoparticles (NPs). Relatively little is, however, known about the influences of the selection of lithium (Li) precursors on the resulting dimensions, shapes, crystallinity, and purity of the products. A comparative study is provided herein on the role of different Li precursors during the synthesis of LiNbO3 NPs. To the best of our knowledge, this study provides the first systematic comparison of the effects of various Li reagents on the preparation of LiNbO3 NPs through solvothermal processes. This solution-phase approach was tuned by the inclusion of Li precursors that either lacked carbon based anions (e.g., F-, Cl-, Br-, I-, OH-, NO3-, or SO42-) or contained carbon-based anions (e.g., C2H5O-, C2H3OO-, C5H7OO-, or CO32-). All other variables were held constant during the synthesis, such as reaction temperature, solvent, niobium precursor, and surfactants. The results of these studies suggest that the type of Li precursor selected plays an important role in nanoparticle formation, such as through controlling the uniformity, crystallinity, and aggregation of LiNbO3 NPs. The average diameter of the resulting NPs can also vary from ∼30 to ∼830 nm as a function of the Li reagent used in the synthesis. The selection of Li precursors also influences the phase purity of the products. This comparative study on the preparation of crystalline LiNbO3 NPs represents a critical step forward to understand the influences and roles of precursors in the design of synthetic processes for the preparation of a variety of alkali metal niobates (e.g., including NaNbO3 and KNbO3) and crystalline metal oxide-based NPs containing other transition metals (e.g., titanium, tantalum).
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Affiliation(s)
- Rana Faryad Ali
- Department of Chemistry and 4D LABS, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada.
| | - Byron D Gates
- Department of Chemistry and 4D LABS, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada.
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12
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Gaukås NH, Huynh QS, Pratap AA, Einarsrud MA, Grande T, Holsinger RMD, Glaum J. In Vitro Biocompatibility of Piezoelectric K0.5Na0.5NbO3 Thin Films on Platinized Silicon Substrates. ACS APPLIED BIO MATERIALS 2020; 3:8714-8721. [DOI: 10.1021/acsabm.0c01111] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nikolai Helth Gaukås
- Department of Materials Science and Engineering, NTNU Norwegian University of Science and Technology, Sem Sælands vei 12, Trondheim, Norway
- Laboratory of Molecular Neuroscience and Dementia, Brain and Mind Centre, Faculty of Medicine and Health, The University of Sydney, 94 Mallett St., Camperdown, NSW 2050, Australia
| | - Quy-Susan Huynh
- Laboratory of Molecular Neuroscience and Dementia, Brain and Mind Centre, Faculty of Medicine and Health, The University of Sydney, 94 Mallett St., Camperdown, NSW 2050, Australia
- Discipline of Pathology, School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2006, Australia
| | - Anishchal A. Pratap
- Laboratory of Molecular Neuroscience and Dementia, Brain and Mind Centre, Faculty of Medicine and Health, The University of Sydney, 94 Mallett St., Camperdown, NSW 2050, Australia
- Discipline of Pathology, School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2006, Australia
| | - Mari-Ann Einarsrud
- Department of Materials Science and Engineering, NTNU Norwegian University of Science and Technology, Sem Sælands vei 12, Trondheim, Norway
| | - Tor Grande
- Department of Materials Science and Engineering, NTNU Norwegian University of Science and Technology, Sem Sælands vei 12, Trondheim, Norway
| | - R. M. Damian Holsinger
- Laboratory of Molecular Neuroscience and Dementia, Brain and Mind Centre, Faculty of Medicine and Health, The University of Sydney, 94 Mallett St., Camperdown, NSW 2050, Australia
- Discipline of Pathology, School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2006, Australia
| | - Julia Glaum
- Department of Materials Science and Engineering, NTNU Norwegian University of Science and Technology, Sem Sælands vei 12, Trondheim, Norway
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13
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Lithium niobate nanoparticles as biofunctional interface material for inner ear devices. Biointerphases 2020; 15:031004. [PMID: 32434336 DOI: 10.1116/6.0000067] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Sensorineural hearing loss (SNHL) affects the inner ear compartment and can be caused by different factors. Usually, the lack, death, or malfunction of sensory cells deputed to transduction of mechanic-into-electric signals leads to SNHL. To date, the therapeutic option for patients impaired by severe or profound SNHL is the cochlear implant (CI), a high-tech electronic device replacing the entire cochlear function. Piezoelectric materials have catalyzed attention to stimulate the auditory neurons by simply mimicking the function of the cochlear sensory epithelium. In this study, the authors investigated lithium niobate (LiNbO3) as a potential candidate material for next generation CIs. LiNbO3 nanoparticles resulted otocompatible with inner ear cells in vitro, had a pronounced immunomodulatory activity, enhanced human beta-defensin in epithelial cells, and showed direct antibacterial activity against P. aeruginosa. Moreover, LiNbO3 nanoparticles were incorporated into poly(vinylidene fluoride-trifluoro ethylene) fibers via electrospinning, which enhanced the piezoelectric response. Finally, the resulting fibrous composite structures support human neural-like cell growth in vitro, thus showing promising features to be used in new inner ear devices.
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14
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Zaszczynska A, Sajkiewicz P, Gradys A. Piezoelectric Scaffolds as Smart Materials for Neural Tissue Engineering. Polymers (Basel) 2020; 12:E161. [PMID: 31936240 PMCID: PMC7022784 DOI: 10.3390/polym12010161] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 12/31/2019] [Accepted: 01/05/2020] [Indexed: 01/03/2023] Open
Abstract
Injury to the central or peripheral nervous systems leads to the loss of cognitive and/or sensorimotor capabilities, which still lacks an effective treatment. Tissue engineering in the post-injury brain represents a promising option for cellular replacement and rescue, providing a cell scaffold for either transplanted or resident cells. Tissue engineering relies on scaffolds for supporting cell differentiation and growth with recent emphasis on stimuli responsive scaffolds, sometimes called smart scaffolds. One of the representatives of this material group is piezoelectric scaffolds, being able to generate electrical charges under mechanical stimulation, which creates a real prospect for using such scaffolds in non-invasive therapy of neural tissue. This paper summarizes the recent knowledge on piezoelectric materials used for tissue engineering, especially neural tissue engineering. The most used materials for tissue engineering strategies are reported together with the main achievements, challenges, and future needs for research and actual therapies. This review provides thus a compilation of the most relevant results and strategies and serves as a starting point for novel research pathways in the most relevant and challenging open questions.
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Affiliation(s)
- Angelika Zaszczynska
- Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawinskiego 5b St., 02-106 Warsaw, Poland
| | - Paweł Sajkiewicz
- Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawinskiego 5b St., 02-106 Warsaw, Poland
| | - Arkadiusz Gradys
- Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawinskiego 5b St., 02-106 Warsaw, Poland
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15
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Asgari M, Yang Y, Yang S, Yu Z, Yarlagadda PKDV, Xiao Y, Li Z. Mg-Phenolic Network Strategy for Enhancing Corrosion Resistance and Osteocompatibility of Degradable Magnesium Alloys. ACS OMEGA 2019; 4:21931-21944. [PMID: 31891072 PMCID: PMC6933793 DOI: 10.1021/acsomega.9b02976] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 11/29/2019] [Indexed: 06/10/2023]
Abstract
Magnesium-based alloys are the most widely used materials for degradable metallic implants and have considerable potential for bone applications owing to their excellent stimulating effect on osteogenesis. However, their high corrosion rate limits their structural stability and causes oxygen deficiency and an excessive increase in the pH around the defect area during bone healing. Magnesium oxides, which are the main corrosion products of Mg, are nontoxic materials with useful effects on new bone formation and pH neutralization. Metal-phenolic networks were introduced recently as a cost-effective and efficient surface modifier and were fabricated by deposition of nanosized metal oxides on different types of substrates using the chemical reaction between phenolic groups and metallic ions. In this study, magnesium oxide films were formed successfully on a Mg-based substrate using Mg-phenolic networks. The effects of various coating parameters on the surface morphology, corrosion resistance, degradation behavior, wettability, and osteocompatibility of degradable metallic materials after surface modification with Mg-phenolic networks were thoroughly investigated for the first time. The results showed that the initial concentration of Mg ions was the main parameter affecting the corrosion resistance, which was almost as much as 3 times that of uncoated samples. Additionally, cytotoxicity and viability assessment and observation of the morphological changes in bonelike cells showed that the in vitro osteocompatibility was significantly enhanced by coatings with Mg concentrations of 2.4-3.6 mg mL-1. Finally, in vivo animal studies using the rat calvarial defect model confirmed that the proposed coating method mitigated the formation of gas cavities around the implantation area by reducing the corrosion rate of the Mg-based implant. The nanosized metal oxides produced by the Mg-phenolic network significantly improved the biodegradability and osteocompatibility of Mg alloys, suggesting a potential approach to advancing the clinical application of Mg alloys.
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Affiliation(s)
- Mohammad Asgari
- The
Institute of Health and Biomedical Innovation and The Australia-China Centre for
Tissue Engineering and Regenerative Medicine (ACCTERM), Queensland University of Technology, Brisbane, Queensland 4059, Australia
- School
of Chemistry, Physics & Mechanical Engineering, Science &
Engineering Faculty, Queensland University
of Technology, Brisbane, Queensland 4000, Australia
| | - Ying Yang
- The
Institute of Health and Biomedical Innovation and The Australia-China Centre for
Tissue Engineering and Regenerative Medicine (ACCTERM), Queensland University of Technology, Brisbane, Queensland 4059, Australia
- School
of Chemistry, Physics & Mechanical Engineering, Science &
Engineering Faculty, Queensland University
of Technology, Brisbane, Queensland 4000, Australia
| | - Shuang Yang
- Key
Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510140, China
| | - Zhentao Yu
- Shaanxi
Key Laboratory of Biomedical Metal Materials, Northwest Institute for Non-ferrous Metal Research, Xi’an 710016, China
| | - Prasad K. D. V. Yarlagadda
- The
Institute of Health and Biomedical Innovation and The Australia-China Centre for
Tissue Engineering and Regenerative Medicine (ACCTERM), Queensland University of Technology, Brisbane, Queensland 4059, Australia
- School
of Chemistry, Physics & Mechanical Engineering, Science &
Engineering Faculty, Queensland University
of Technology, Brisbane, Queensland 4000, Australia
| | - Yin Xiao
- The
Institute of Health and Biomedical Innovation and The Australia-China Centre for
Tissue Engineering and Regenerative Medicine (ACCTERM), Queensland University of Technology, Brisbane, Queensland 4059, Australia
- School
of Chemistry, Physics & Mechanical Engineering, Science &
Engineering Faculty, Queensland University
of Technology, Brisbane, Queensland 4000, Australia
- Key
Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510140, China
| | - Zhiyong Li
- The
Institute of Health and Biomedical Innovation and The Australia-China Centre for
Tissue Engineering and Regenerative Medicine (ACCTERM), Queensland University of Technology, Brisbane, Queensland 4059, Australia
- School
of Chemistry, Physics & Mechanical Engineering, Science &
Engineering Faculty, Queensland University
of Technology, Brisbane, Queensland 4000, Australia
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16
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Fanous MJ, Li Y, Kandel ME, Abdeen AA, Kilian KA, Popescu G. Effects of substrate patterning on cellular spheroid growth and dynamics measured by gradient light interference microscopy (GLIM). JOURNAL OF BIOPHOTONICS 2019; 12:e201900178. [PMID: 31400294 PMCID: PMC7716417 DOI: 10.1002/jbio.201900178] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 07/05/2019] [Accepted: 08/07/2019] [Indexed: 05/12/2023]
Abstract
The development of three-dimensional (3D) cellular architectures during development and pathological processes involves intricate migratory patterns that are modulated by genetics and the surrounding microenvironment. The substrate composition of cell cultures has been demonstrated to influence growth, proliferation and migration in 2D. Here, we study the growth and dynamics of mouse embryonic fibroblast cultures patterned in a tissue sheet which then exhibits 3D growth. Using gradient light interference microscopy (GLIM), a label-free quantitative phase imaging approach, we explored the influence of geometry on cell growth patterns and rotational dynamics. We apply, for the first time to our knowledge, dispersion-relation phase spectroscopy (DPS) in polar coordinates to generate the radial and rotational cell mass-transport. Our data show that cells cultured on engineered substrates undergo rotational transport in a radially independent manner and exhibit faster vertical growth than the control, unpatterned cells. The use of GLIM and polar DPS provides a novel quantitative approach to studying the effects of spatially patterned substrates on cell motility and growth.
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Affiliation(s)
- Michael J. Fanous
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois
- Quantitative Light Imaging Laboratory, Department of Electrical and Computer Engineering, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Yanfen Li
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois
- Department of Biomedical Engineering, University of Massachusetts Lowell, Lowell, Massachusetts
| | - Mikhail E. Kandel
- Quantitative Light Imaging Laboratory, Department of Electrical and Computer Engineering, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Amr A. Abdeen
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Kristopher A. Kilian
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois
- School of Chemistry, Australian Centre for NanoMedicine, University of New South Wales, Sydney, Australia
- School of Materials Science and Engineering, University of New South Wales, Sydney, Australia
| | - Gabriel Popescu
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois
- Quantitative Light Imaging Laboratory, Department of Electrical and Computer Engineering, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois
- Correspondence: Gabriel Popescu, Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL.
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17
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Miccio L, Behal J, Mugnano M, Memmolo P, Mandracchia B, Merola F, Grilli S, Ferraro P. Biological Lenses as a Photomask for Writing Laser Spots into Ferroelectric Crystals. ACS APPLIED BIO MATERIALS 2019; 2:4675-4680. [PMID: 35021464 DOI: 10.1021/acsabm.9b00569] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Red blood cells on the surface of a lithium niobate crystal can be used as optical lenses for direct writing of laser-induced refractive index changes. The writing process by such a photomask made of biological lenses is due to the photorefractive effect. Wavefront analysis by a digital holographic microscope is performed for deep and accurate evaluation of local refractive index changes. Different focusing properties can be imprinted on the crystal depending on which type of RBC is employed, discocytes or spherical-like RBCs. The possibility to fix into a solid material the optical fingerprint of the RBCs will have an impact on both diagnostics and cell\material interfacing.
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Affiliation(s)
- Lisa Miccio
- Institute of Applied Sciences and Intelligent Systems ISASI-CNR, 34 Via Campi Flegrei, 80078 Pozzuoli (NA), Italy
| | - Jaromir Behal
- Institute of Applied Sciences and Intelligent Systems ISASI-CNR, 34 Via Campi Flegrei, 80078 Pozzuoli (NA), Italy.,Department of Optics, Palacký University, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic
| | - Martina Mugnano
- Institute of Applied Sciences and Intelligent Systems ISASI-CNR, 34 Via Campi Flegrei, 80078 Pozzuoli (NA), Italy
| | - Pasquale Memmolo
- Institute of Applied Sciences and Intelligent Systems ISASI-CNR, 34 Via Campi Flegrei, 80078 Pozzuoli (NA), Italy
| | - Biagio Mandracchia
- Institute of Applied Sciences and Intelligent Systems ISASI-CNR, 34 Via Campi Flegrei, 80078 Pozzuoli (NA), Italy
| | - Francesco Merola
- Institute of Applied Sciences and Intelligent Systems ISASI-CNR, 34 Via Campi Flegrei, 80078 Pozzuoli (NA), Italy
| | - Simonetta Grilli
- Institute of Applied Sciences and Intelligent Systems ISASI-CNR, 34 Via Campi Flegrei, 80078 Pozzuoli (NA), Italy
| | - Pietro Ferraro
- Institute of Applied Sciences and Intelligent Systems ISASI-CNR, 34 Via Campi Flegrei, 80078 Pozzuoli (NA), Italy
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18
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Jia F, Lin S, He X, Zhang J, Shen S, Wang Z, Tang B, Li C, Wu Y, Dong L, Cheng K, Weng W. Comprehensive Evaluation of Surface Potential Characteristics on Mesenchymal Stem Cells' Osteogenic Differentiation. ACS APPLIED MATERIALS & INTERFACES 2019; 11:22218-22227. [PMID: 31199127 DOI: 10.1021/acsami.9b07161] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The surface electric potential of biomaterials has been extensively proven to play a critical role in stem cells' fate. However, there are ambiguous reports on the relation of stem cells' osteogenic capacity to surface potential characteristics (potential polarity and intensity). To address this, we adopted a surface with a wide potential range and both positive/negative polarity in a comprehensive view to get insight into surface potential-regulating cellular osteogenic differentiation. Tb xDy1- xFe2 alloy/poly(vinylidene fluoride-trifluoroethylene) magnetoelectric films were prepared, and the film could provide controllable surface potential characteristics with positive or negative polarity and potential (ϕME) intensity variation from 0 to ±120 mV as well as keep the surface chemical composition and microstructure unchanged. Cell culture results showed that osteogenic differentiation of mesenchymal stem cells on both positive and negative potential films was obviously upregulated when the /ϕME/ intensities were set from 0-55 mV. Differently, the highest upregulated osteogenic differentiation on the positive potential films corresponded to the /ϕME/ intensity from 35-55 mV and was better than that on the negative potential films whereas the highest on the negative potential films corresponded to the /ϕME/ intensity from 0-35 mV and was better than that on the positive potential films. This fact could illustrate why previous reports appeared ambiguously; i.e., the comparative result in osteogenic differentiation between the positive and negative potential films strongly depends on the selection of surface potential intensity. On the basis of assaying of the exposed functional sites (RGD and PHSRN) of the adsorbed fibronectin (FN) and the expression of cellular integrin α5 and β1 subunits, the difference in the behavior between the positive and negative potential films was attributed to the distinct conformation of adsorbed fibronectin (FN) and the opposite changing trend with /ϕME/ for the two films, which triggers the osteogenesis-related FAK/ERK signaling pathway to a different extent. This study could provide new cognition for the in-depth understanding of the regulation mechanism underlying surface potential characteristics in cell behaviors.
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Affiliation(s)
- Fei Jia
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials , Zhejiang University , Hangzhou 310027 , China
| | - Suya Lin
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials , Zhejiang University , Hangzhou 310027 , China
| | - Xuzhao He
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials , Zhejiang University , Hangzhou 310027 , China
| | - Jiamin Zhang
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials , Zhejiang University , Hangzhou 310027 , China
| | - Shuxian Shen
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials , Zhejiang University , Hangzhou 310027 , China
| | - Zhiying Wang
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials , Zhejiang University , Hangzhou 310027 , China
| | - Bolin Tang
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials , Zhejiang University , Hangzhou 310027 , China
- College of Materials and Textile Engineering , Jiaxing University , Jiaxing 314001 , China
| | - Cheng Li
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials , Zhejiang University , Hangzhou 310027 , China
| | - Yongjun Wu
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials , Zhejiang University , Hangzhou 310027 , China
| | - Lingqing Dong
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials , Zhejiang University , Hangzhou 310027 , China
- The Stomatologic Hospital, School of Medicine , Zhejiang University , Hangzhou 310003 , China
| | - Kui Cheng
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials , Zhejiang University , Hangzhou 310027 , China
| | - Wenjian Weng
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials , Zhejiang University , Hangzhou 310027 , China
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19
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Ali RF, Bilton M, Gates BD. One-pot synthesis of sub-10 nm LiNbO 3 nanocrystals exhibiting a tunable optical second harmonic response. NANOSCALE ADVANCES 2019; 1:2268-2275. [PMID: 36131980 PMCID: PMC9417713 DOI: 10.1039/c8na00171e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Accepted: 04/19/2019] [Indexed: 05/28/2023]
Abstract
Nanophotonics, dealing with the properties of light interacting with nanometer scale materials and structures, has emerged as a sought after platform for sensing and imaging applications, and is impacting fields that include advanced information technology, signal processing circuits, and cryptography. Lithium niobate (LiNbO3) is a unique photonic material, often referred to as the "silicon of photonics" due to its excellent optical properties. In this article, we introduce a solution-phase method to prepare single-crystalline LiNbO3 nanoparticles with average diameters of 7 nm. This one-pot approach forms well-dispersed LiNbO3 nanocrystals without additional organic additives (e.g., surfactants) to control growth and aggregation of the nanoparticles. Formation of these LiNbO3 nanocrystals proceeds through a non-aqueous sol-gel reaction, in which lithium hydroxide and niobium hydroxide species were generated in situ. The reaction proceeded through both a condensation and crystallization of these reactants to form the solid nanoparticles. These nanocrystals of LiNbO3 were active for optical second harmonic generation (SHG) with a tunable response from 400 to 500 nm. These nanoparticles could enable further development of non-linear optical techniques such as SHG microscopy for bioimaging, which requires the dimensions of nanoparticles to be well below 100 nm.
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Affiliation(s)
- Rana Faryad Ali
- Department of Chemistry and 4D LABS, Simon Fraser University 8888 University Drive Burnaby BC V5A 1S6 Canada
| | - Matthew Bilton
- Department of Chemistry and 4D LABS, Simon Fraser University 8888 University Drive Burnaby BC V5A 1S6 Canada
| | - Byron D Gates
- Department of Chemistry and 4D LABS, Simon Fraser University 8888 University Drive Burnaby BC V5A 1S6 Canada
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20
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Bai Y, Dai X, Yin Y, Wang J, Sun X, Liang W, Li Y, Deng X, Zhang X. Biomimetic piezoelectric nanocomposite membranes synergistically enhance osteogenesis of deproteinized bovine bone grafts. Int J Nanomedicine 2019; 14:3015-3026. [PMID: 31118619 PMCID: PMC6503198 DOI: 10.2147/ijn.s197824] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 04/03/2019] [Indexed: 12/26/2022] Open
Abstract
Purpose: The combination of a bone graft with a barrier membrane is the classic method for guided bone regeneration (GBR) treatment. However, the insufficient osteoinductivity of currently-available barrier membranes and the consequent limited bone regeneration often inhibit the efficacy of bone repair. In this study, we utilized the piezoelectric properties of biomaterials to enhance the osteoinductivity of barrier membranes. Methods: A flexible nanocomposite membrane mimicking the piezoelectric properties of natural bone was utilized as the barrier membrane. Its therapeutic efficacy in repairing critical-sized rabbit mandible defects in combination with xenogenic grafts of deproteinized bovine bone (DBB) was explored. The nanocomposite membranes were fabricated with a homogeneous distribution of piezoelectric BaTiO3 nanoparticles (BTO NPs) embedded within a poly(vinylidene fluoridetrifluoroethylene) (P(VDF-TrFE)) matrix. Results: The piezoelectric coefficient of the polarized nanocomposite membranes was close to that of human bone. The piezoelectric coefficient of the polarized nanocomposite membranes was highly stable, with more than 90% of the original piezoelectric coefficient (d33) remaining up to 28 days after immersion in culture medium. Compared with commercially-available polytetrafluoroethylene (PTFE) membranes, the polarized BTO/P(VDF-TrFE) nanocomposite membranes exhibited higher osteoinductivity (assessed by immunofluorescence staining for runt-related transcription factor 2 (RUNX-2) expression) and induced significantly earlier neovascularization and complete mature bone-structure formation within the rabbit mandible critical-sized defects after implantation with DBB Bio-Oss® granules. Conclusion: Our findings thus demonstrated that the piezoelectric BTO/P(VDF-TrFE) nanocomposite membranes might be suitable for enhancing the clinical efficacy of GBR.
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Affiliation(s)
- Yunyang Bai
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, People's Republic of China.,Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, People's Republic of China.,Department of Dental Materials & Dental Medical Devices Testing Center, Peking University School and Hospital of Stomatology, Beijing 100081, People's Republic of China
| | - Xiaohan Dai
- Xiangya Stomatological Hospital, Central South University, Changsha 410078, People's Republic of China
| | - Ying Yin
- Xiangya Stomatological Hospital, Central South University, Changsha 410078, People's Republic of China
| | - Jiaqi Wang
- Xiangya Stomatological Hospital, Central South University, Changsha 410078, People's Republic of China
| | - Xiaowen Sun
- Department of Dental Materials & Dental Medical Devices Testing Center, Peking University School and Hospital of Stomatology, Beijing 100081, People's Republic of China
| | - Weiwei Liang
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, People's Republic of China
| | - Yiping Li
- Xiangya Stomatological Hospital, Central South University, Changsha 410078, People's Republic of China
| | - Xuliang Deng
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, People's Republic of China.,National Engineering Laboratory for Digital and Material Technology of Stomatology, Peking University School and Hospital of Stomatology, Beijing 100081, People's Republic of China.,Beijing Laboratory of Biomedical Materials, Peking University School and Hospital of Stomatology, Beijing 100081, People's Republic of China
| | - Xuehui Zhang
- Department of Dental Materials & Dental Medical Devices Testing Center, Peking University School and Hospital of Stomatology, Beijing 100081, People's Republic of China.,National Engineering Laboratory for Digital and Material Technology of Stomatology, Peking University School and Hospital of Stomatology, Beijing 100081, People's Republic of China.,Beijing Laboratory of Biomedical Materials, Peking University School and Hospital of Stomatology, Beijing 100081, People's Republic of China
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21
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Vasileva D, Vasilev S, Kholkin AL, Shur VY. Domain Diversity and Polarization Switching in Amino Acid β-Glycine. MATERIALS 2019; 12:ma12081223. [PMID: 30991625 PMCID: PMC6514944 DOI: 10.3390/ma12081223] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 03/28/2019] [Accepted: 04/10/2019] [Indexed: 11/28/2022]
Abstract
Piezoelectric materials based on lead zirconate titanate are widely used in sensors and actuators. However, their application is limited because of high processing temperature, brittleness, lack of conformal deposition and, more importantly, intrinsic incompatibility with biological environments. Recent studies on bioorganic piezoelectrics have demonstrated their potential in these applications, essentially due to using the same building blocks as those used by nature. In this work, we used piezoresponse force microscopy (PFM) to study the domain structures and polarization reversal in the smallest amino acid glycine, which recently attracted a lot of attention due to its strong shear piezoelectric activity. In this uniaxial ferroelectric, a diverse domain structure that includes both 180° and charged domain walls was observed, as well as domain wall kinks related to peculiar growth and crystallographic structure of this material. Local polarization switching was studied by applying a bias voltage to the PFM tip, and the possibility to control the resulting domain structure was demonstrated. This study has shown that the as-grown domain structure and changes in the electric field in glycine are qualitatively similar to those found in the uniaxial inorganic ferroelectrics.
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Affiliation(s)
- Daria Vasileva
- School of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg 620000, Russia.
| | - Semen Vasilev
- School of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg 620000, Russia.
- Department of Chemical Science, Bernal Institute, University of Limerick, V94 T9PX Limerick, Ireland.
| | - Andrei L Kholkin
- School of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg 620000, Russia.
- Department of Physics & CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro 3810-193, Portugal.
| | - Vladimir Ya Shur
- School of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg 620000, Russia.
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22
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Rega R, Gennari O, Mecozzi L, Pagliarulo V, Bramanti A, Ferraro P, Grilli S. Maskless Arrayed Nanofiber Mats by Bipolar Pyroelectrospinning. ACS APPLIED MATERIALS & INTERFACES 2019; 11:3382-3387. [PMID: 30609347 DOI: 10.1021/acsami.8b12513] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The numerous advantages of micro- and nanostructures produced by electrospinning (ES) have stimulated enormous interest in this technology with potential application in several fields. However, ES still has some limitations in controlling the geometrical arrangement of the fiber mats so that expensive and time-consuming technologies are usually employed for producing ordered geometries. Here we present a technique that we call "bipolar pyroelectrospinning" (b-PES) for generating ordered arrays of fiber mats in a direct manner by using the bipolar pyroelectric field produced by a periodically poled lithium niobate crystal (PPLN). The b-PES is free from expensive electrodes, nozzles, and masks because it makes use simply of the structured pyroelectric field produced by the PPLN crystal used as collector. The results show clearly the reliability of the technique in producing a wide variety of arrayed fiber mats that could find application in bioengineering or many other fields. Preliminary results of live cells patterning under controlled geometrical constraints is also reported and discussed in order to show potential exploitation as a scaffold in tissue engineering.
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Affiliation(s)
- Romina Rega
- National Research Council (CNR) , Institute of Applied Sciences & Intelligent Systems (ISASI) 'E. Caianiello' , Via Campi Flegrei 34 , 80078 Pozzuoli ( NA ), Italy
| | - Oriella Gennari
- National Research Council (CNR) , Institute of Applied Sciences & Intelligent Systems (ISASI) 'E. Caianiello' , Via Campi Flegrei 34 , 80078 Pozzuoli ( NA ), Italy
| | - Laura Mecozzi
- National Research Council (CNR) , Institute of Applied Sciences & Intelligent Systems (ISASI) 'E. Caianiello' , Via Campi Flegrei 34 , 80078 Pozzuoli ( NA ), Italy
| | - Vito Pagliarulo
- National Research Council (CNR) , Institute of Applied Sciences & Intelligent Systems (ISASI) 'E. Caianiello' , Via Campi Flegrei 34 , 80078 Pozzuoli ( NA ), Italy
| | - Alessia Bramanti
- National Research Council (CNR) , Institute of Applied Sciences & Intelligent Systems (ISASI) 'E. Caianiello' , Via Campi Flegrei 34 , 80078 Pozzuoli ( NA ), Italy
- IRCCS Centro Neurolesi "Bonino-Pulejo" , Contrada Casazza SS113 , 98124 Messina , Italy
| | - Pietro Ferraro
- National Research Council (CNR) , Institute of Applied Sciences & Intelligent Systems (ISASI) 'E. Caianiello' , Via Campi Flegrei 34 , 80078 Pozzuoli ( NA ), Italy
| | - Simonetta Grilli
- National Research Council (CNR) , Institute of Applied Sciences & Intelligent Systems (ISASI) 'E. Caianiello' , Via Campi Flegrei 34 , 80078 Pozzuoli ( NA ), Italy
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23
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Zlotnik S, Maltez-da Costa M, Barroca N, Hortigüela MJ, Singh MK, Fernandes MHV, Vilarinho PM. Functionalized-ferroelectric-coating-driven enhanced biomineralization and protein-conformation on metallic implants. J Mater Chem B 2019; 7:2177-2189. [DOI: 10.1039/c8tb02777c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the context of bone regeneration, it is important to have platforms that with appropriate stimuli can support the attachment and direct the growth, proliferation and differentiation of cells.
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Affiliation(s)
- Sebastian Zlotnik
- Department of Materials and Ceramic Engineering
- CICECO – Aveiro Institute of Materials
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | - Marisa Maltez-da Costa
- Department of Materials and Ceramic Engineering
- CICECO – Aveiro Institute of Materials
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | - Nathalie Barroca
- Department of Materials and Ceramic Engineering
- CICECO – Aveiro Institute of Materials
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | - María J. Hortigüela
- Center for Mechanical Technology and Automation (TEMA)
- Department of Mechanical Engineering
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | - Manoj Kumar Singh
- Center for Mechanical Technology and Automation (TEMA)
- Department of Mechanical Engineering
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | - Maria Helena V. Fernandes
- Department of Materials and Ceramic Engineering
- CICECO – Aveiro Institute of Materials
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | - Paula Maria Vilarinho
- Department of Materials and Ceramic Engineering
- CICECO – Aveiro Institute of Materials
- University of Aveiro
- 3810-193 Aveiro
- Portugal
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24
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Moussa HI, Logan M, Wong K, Rao Z, Aucoin MG, Tsui TY. Nanoscale-Textured Tantalum Surfaces for Mammalian Cell Alignment. MICROMACHINES 2018; 9:E464. [PMID: 30424397 PMCID: PMC6187670 DOI: 10.3390/mi9090464] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 09/07/2018] [Accepted: 09/10/2018] [Indexed: 02/06/2023]
Abstract
Tantalum is one of the most important biomaterials used for surgical implant devices. However, little knowledge exists about how nanoscale-textured tantalum surfaces affect cell morphology. Mammalian (Vero) cell morphology on tantalum-coated comb structures was studied using high-resolution scanning electron microscopy and fluorescence microscopy. These structures contained parallel lines and trenches with equal widths in the range of 0.18 to 100 μm. Results showed that as much as 77% of adherent cell nuclei oriented within 10° of the line axes when deposited on comb structures with widths smaller than 10 μm. However, less than 20% of cells exhibited the same alignment performance on blanket tantalum films or structures with line widths larger than 50 μm. Two types of line-width-dependent cell morphology were observed. When line widths were smaller than 0.5 μm, nanometer-scale pseudopodia bridged across trench gaps without contacting the bottom surfaces. In contrast, pseudopodia structures covered the entire trench sidewalls and the trench bottom surfaces of comb structures with line-widths larger than 0.5 μm. Furthermore, results showed that when a single cell simultaneously adhered to multiple surface structures, the portion of the cell contacting each surface reflected the type of morphology observed for cells individually contacting the surfaces.
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Affiliation(s)
- Hassan I Moussa
- Department of Chemical Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
- Waterloo Institute of Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
| | - Megan Logan
- Department of Chemical Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
- Waterloo Institute of Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
| | - Kingsley Wong
- Department of Chemical Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
- Waterloo Institute of Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
| | - Zheng Rao
- Department of Chemical Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
- Waterloo Institute of Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
| | - Marc G Aucoin
- Department of Chemical Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
- Waterloo Institute of Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
| | - Ting Y Tsui
- Department of Chemical Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
- Waterloo Institute of Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
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25
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Mandracchia B, Gennari O, Bramanti A, Grilli S, Ferraro P. Label-free quantification of the effects of lithium niobate polarization on cell adhesion via holographic microscopy. JOURNAL OF BIOPHOTONICS 2018; 11:e201700332. [PMID: 29405583 DOI: 10.1002/jbio.201700332] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Accepted: 01/31/2018] [Indexed: 06/07/2023]
Abstract
The surface of a c- cut ferroelectric crystal at room temperature is characterized by the so-called screening surface charges, able to compensate the charge due to the spontaneous polarization. Recently, these charges inspired the investigation of the interaction affinity of live cells with lithium niobate and lithium tantalate crystals. However, different knowledge gaps still remain that prevent a reasonable application of these materials for biological applications. Here, a label-free holographic total internal reflection microscopy is shown; the technique is able to evaluate quantitatively the contact area of live fibroblast cells adhering onto the surface of a ferroelectric lithium niobate crystal. The results show values of contact area significantly different between cells adhering onto the positive or negative face of the crystal. This reinforces the reasons for using the polarization charge of these materials to study and/or control cellular processes and, thus, to develop an innovative platform based on polar dielectric functional substrates.
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Affiliation(s)
- Biagio Mandracchia
- Institute of Applied Sciences and Intelligent Systems of the National Research Council (CNR-ISASI), Pozzuoli, Naples, Italy
| | - Oriella Gennari
- Institute of Applied Sciences and Intelligent Systems of the National Research Council (CNR-ISASI), Pozzuoli, Naples, Italy
| | - Alessia Bramanti
- Institute of Applied Sciences and Intelligent Systems of the National Research Council (CNR-ISASI), Pozzuoli, Naples, Italy
| | - Simonetta Grilli
- Institute of Applied Sciences and Intelligent Systems of the National Research Council (CNR-ISASI), Pozzuoli, Naples, Italy
| | - Pietro Ferraro
- Institute of Applied Sciences and Intelligent Systems of the National Research Council (CNR-ISASI), Pozzuoli, Naples, Italy
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26
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Tang B, Zhang B, Zhuang J, Wang Q, Dong L, Cheng K, Weng W. Surface potential-governed cellular osteogenic differentiation on ferroelectric polyvinylidene fluoride trifluoroethylene films. Acta Biomater 2018; 74:291-301. [PMID: 29729416 DOI: 10.1016/j.actbio.2018.04.051] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 04/25/2018] [Accepted: 04/26/2018] [Indexed: 01/08/2023]
Abstract
Surface potential of biomaterials can dramatically influence cellular osteogenic differentiation. In this work, a wide range of surface potential on ferroelectric polyvinylidene fluoride trifluoroethylene (P(VDF-TrFE)) films was designed to get insight into the interfacial interaction of cell-charged surface. The P(VDF-TrFE) films poled by contact electric poling at various electric fields obtained well stabilized surface potential, with wide range from -3 to 915 mV. The osteogenic differentiation level of cells cultured on the films was strongly dependent on surface potential and reached the optimum at 391 mV in this system. Binding specificity assay indicated that surface potential could effectively govern the binding state of the adsorbed fibronectin (FN) with integrin. Molecular dynamic (MD) simulation further revealed that surface potential brought a significant difference in the relative distance between RGD and synergy PHSRN sites of adsorbed FN, resulting in a distinct integrin-FN binding state. These results suggest that the full binding of integrin α5β1 with both RGD and PHSRN sites of FN possesses a strong ability to activate osteogenic signaling pathway. This work sheds light on the underlying mechanism of osteogenic differentiation behavior on charged material surfaces, and also provides a guidance for designing a reasonable charged surface to enhance osteogenic differentiation. STATEMENT OF SIGNIFICANCE The ferroelectric P(VDF-TrFE) films with steady and a wide range of surface potential were designed to understand underlying mechanism of cell-charged surface interaction. The results showed that the charged surface well favored upregulation of osteogenic differentiation of MC3T3-E1 cells, and more importantly, a highest level occurred on the film with a moderate surface potential. Experiments and molecular dynamics simulation demonstrated that the surface potential could govern fibronectin conformation and then the integrin-fibronectin binding. We propose that a full binding state of integrin α5β1 with fibronectin induces effective activation of integrin-mediated FAK/ERK signaling pathway to upregulate cellular osteogenic differentiation. This work provides a guidance for designing a reasonable charged surface to enhance osteogenic differentiation.
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Affiliation(s)
- Bolin Tang
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China
| | - Bo Zhang
- Soft Matter Research Center and Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Junjun Zhuang
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China
| | - Qi Wang
- Soft Matter Research Center and Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Lingqing Dong
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China; The Affiliated Stomatologic Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China.
| | - Kui Cheng
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China
| | - Wenjian Weng
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China.
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27
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Snyder PJ, LaJeunesse DR, Reddy P, Kirste R, Collazo R, Ivanisevic A. Bioelectronics communication: encoding yeast regulatory responses using nanostructured gallium nitride thin films. NANOSCALE 2018; 10:11506-11516. [PMID: 29888776 PMCID: PMC6195121 DOI: 10.1039/c8nr03684e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Baker's yeast, S. cerevisiae, is a model organism that is used in synthetic biology. The work demonstrates how GaN nanostructured thin films can encode physiological responses in S. cerevisiae yeast. The Ga-polar, n-type, GaN thin films are characterized via Photocurrent Measurements, Atomic Force Microscopy and Kelvin Probe Force Microscopy. UV light is used to induce persistent photoconductivity that results in charge accumulation on the surface. The morphological, chemical and electronic properties of the nanostructured films are utilized to activate the cell wall integrity pathway and alter the amount of chitin produced by the yeast. The encoded cell responses are induced by the semiconductor interfacial properties associated with nanoscale topography and the accumulation of charge on the surface that promotes the build-up of oxygen species and in turn cause a hyperoxia related change in the yeast. The thin films can also alter the membrane voltage of yeast. The observed modulation of the membrane voltage of the yeast exposed to different GaN samples supports the notion that the semiconductor material can cause cell polarization. The results thus define a strategy for bioelectronics communication where the roughness, surface chemistry and charge of the wide band gap semiconductor's thin film surface initiate the encoding of the yeast response.
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Affiliation(s)
- Patrick J Snyder
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA.
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28
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Gennari O, Marchesano V, Rega R, Mecozzi L, Nazzaro F, Fratianni F, Coppola R, Masucci L, Mazzon E, Bramanti A, Ferraro P, Grilli S. Pyroelectric Effect Enables Simple and Rapid Evaluation of Biofilm Formation. ACS APPLIED MATERIALS & INTERFACES 2018; 10:15467-15476. [PMID: 29676891 DOI: 10.1021/acsami.8b02815] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Biofilms are detrimental to human life and industrial processes due to potential infections, contaminations, and deterioration. Therefore, the evaluation of microbial capability to form biofilms is of fundamental importance for assessing how different environmental factors may affect their vitality. Nowadays, the approaches used for biofilm evaluation are still poor in reliability and rapidity and often provide contradictory results. Here, we present what we call biofilm electrostatic test (BET) as a simple, rapid, and highly reproducible tool for evaluating in vitro the ability of bacteria to form biofilms through electrostatic interaction with a pyroelectrified carrier. The results show how the BET is able to produce viable biofilms with a density 6-fold higher than that on the control, after just 2 h incubation. The BET could pave the way to a rapid standardization of the evaluation of bacterial resistance among biofilm-producing microorganisms. In fact, due to its simplicity and cost-effectiveness, it is well suited for a rapid and easy implementation in a microbiology laboratory.
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Affiliation(s)
- O Gennari
- Institute of Applied Sciences & Intelligent Systems , National Research Council (CNR-ISASI) , Via Campi Flegrei 34 , 80078 Pozzuoli (NA) , Italy
| | - V Marchesano
- Institute of Applied Sciences & Intelligent Systems , National Research Council (CNR-ISASI) , Via Campi Flegrei 34 , 80078 Pozzuoli (NA) , Italy
| | - R Rega
- Institute of Applied Sciences & Intelligent Systems , National Research Council (CNR-ISASI) , Via Campi Flegrei 34 , 80078 Pozzuoli (NA) , Italy
| | - L Mecozzi
- Institute of Applied Sciences & Intelligent Systems , National Research Council (CNR-ISASI) , Via Campi Flegrei 34 , 80078 Pozzuoli (NA) , Italy
| | - F Nazzaro
- Institute of Food Sciences , National Research Council (CNR-ISA) , Via Roma 64 , 83100 Avellino , Italy
| | - F Fratianni
- Institute of Food Sciences , National Research Council (CNR-ISA) , Via Roma 64 , 83100 Avellino , Italy
| | - R Coppola
- DIAA-University of Molise , Via de Sanctis, snc , 86100 Campobasso , Italy
| | - L Masucci
- Institute of Microbiology , Catholic University of the Sacred Heart, "A. Gemelli" Foundation , Largo A. Gemelli 8 , 00168 Rome , Italy
| | - E Mazzon
- IRCCS Centre for Neuroscience Bonino-Pulejo , Strada Statale 113 , 98124 Messina , Italy
| | - A Bramanti
- Institute of Applied Sciences & Intelligent Systems , National Research Council (CNR-ISASI) , Via Campi Flegrei 34 , 80078 Pozzuoli (NA) , Italy
- IRCCS Centre for Neuroscience Bonino-Pulejo , Strada Statale 113 , 98124 Messina , Italy
| | - P Ferraro
- Institute of Applied Sciences & Intelligent Systems , National Research Council (CNR-ISASI) , Via Campi Flegrei 34 , 80078 Pozzuoli (NA) , Italy
| | - S Grilli
- Institute of Applied Sciences & Intelligent Systems , National Research Council (CNR-ISASI) , Via Campi Flegrei 34 , 80078 Pozzuoli (NA) , Italy
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29
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Xu M, Kang H, Guan L, Li H, Zhang M. Facile Fabrication of a Flexible LiNbO 3 Piezoelectric Sensor through Hot Pressing for Biomechanical Monitoring. ACS APPLIED MATERIALS & INTERFACES 2017; 9:34687-34695. [PMID: 28901736 DOI: 10.1021/acsami.7b10411] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Wearable pressure sensors have attracted increasing attention for biomechanical monitoring due to their portability and flexibility. Although great advances have been made, there are no facile methods to produce sensors with good performance. Here, we present a simple method for manufacturing flexible and self-powered piezoelectric sensors based on LiNbO3 (LN) particles. The LN particles are dispersed in polypropylene (PP) doped with multiwalled carbon nanotubes (MWCNTs) by hot pressing (200 °C) to form a flexible LN/MWCNT/PP piezoelectric composite film (PCF) sensor. This cost-effective sensor has high sensitivity (8 Pa), fast response time (ca. 40 ms), and long-term stability (>3000 cycles). Measurements of pressure changes from peripheral arteries demonstrate the applicability of the LN/MWCNT/PP PCF sensor to biomechanical monitoring as well as its potential for biomechanics-related clinical diagnosis and forecasting.
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Affiliation(s)
- Muzhen Xu
- Department of Chemistry, Renmin University of China , Beijing 100872, China
| | - Hua Kang
- Department of Chemistry, Renmin University of China , Beijing 100872, China
| | - Li Guan
- Department of Chemistry, Renmin University of China , Beijing 100872, China
| | - Huayi Li
- Institute of Chemistry, The Chinese Academy of Sciences (CAS) , Beijing 100190, China
| | - Meining Zhang
- Department of Chemistry, Renmin University of China , Beijing 100872, China
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30
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Lettieri S, Rega R, Pallotti DK, Gennari O, Mecozzi L, Maddalena P, Ferraro P, Grilli S. Direct Evidence of Polar Ordering and Investigation on Cytophilic Properties of Pyroelectrified Polymer Films by Optical Second Harmonic Generation Analysis. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00794] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Stefano Lettieri
- National Research Council, Institute of Applied Sciences & Intelligent Systems (ISASI-CNR) “E. Caianiello”, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy
| | - Romina Rega
- National Research Council, Institute of Applied Sciences & Intelligent Systems (ISASI-CNR) “E. Caianiello”, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy
| | - Deborah K. Pallotti
- National Research Council, Institute of Applied Sciences & Intelligent Systems (ISASI-CNR) “E. Caianiello”, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy
| | - Oriella Gennari
- National Research Council, Institute of Applied Sciences & Intelligent Systems (ISASI-CNR) “E. Caianiello”, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy
| | - Laura Mecozzi
- National Research Council, Institute of Applied Sciences & Intelligent Systems (ISASI-CNR) “E. Caianiello”, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy
| | - Pasqualino Maddalena
- Physics
Department, Università degli Studi di Napoli “Federico II”, Via Cintia, 80126 Napoli, Italy
| | - Pietro Ferraro
- National Research Council, Institute of Applied Sciences & Intelligent Systems (ISASI-CNR) “E. Caianiello”, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy
| | - Simonetta Grilli
- National Research Council, Institute of Applied Sciences & Intelligent Systems (ISASI-CNR) “E. Caianiello”, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy
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31
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Mandracchia B, Gennari O, Marchesano V, Paturzo M, Ferraro P. Label free imaging of cell-substrate contacts by holographic total internal reflection microscopy. JOURNAL OF BIOPHOTONICS 2017; 10:1163-1170. [PMID: 27804236 DOI: 10.1002/jbio.201600177] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 08/31/2016] [Accepted: 10/04/2016] [Indexed: 05/25/2023]
Abstract
The study of cell adhesion contacts is pivotal to understand cell mechanics and interaction at substrates or chemical and physical stimuli. We designed and built a HoloTIR microscope for label-free quantitative phase imaging of total internal reflection. Here we show for the first time that HoloTIR is a good choice for label-free study of focal contacts and of cell/substrate interaction as its sensitivity is enhanced in comparison with standard TIR microscopy. Finally, the simplicity of implementation and relative low cost, due to the requirement of less optical components, make HoloTIR a reasonable alternative, or even an addition, to TIRF microscopy for mapping cell/substratum topography. As a proof of concept, we studied the formation of focal contacts of fibroblasts on three substrates with different levels of affinity for cell adhesion.
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Affiliation(s)
- Biagio Mandracchia
- CNR - ISASI Institute of Applied Sciences and Intelligent Systems, Via Campi Flegrei 34, 80078, Pozzuoli, Napoli, Italy
- Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale - DICMAPI, University of Naples Federico II, Piazzale Tecchio 80, 80100, Napoli, Italy
| | - Oriella Gennari
- CNR - ISASI Institute of Applied Sciences and Intelligent Systems, Via Campi Flegrei 34, 80078, Pozzuoli, Napoli, Italy
| | - Valentina Marchesano
- CNR - ISASI Institute of Applied Sciences and Intelligent Systems, Via Campi Flegrei 34, 80078, Pozzuoli, Napoli, Italy
| | - Melania Paturzo
- CNR - ISASI Institute of Applied Sciences and Intelligent Systems, Via Campi Flegrei 34, 80078, Pozzuoli, Napoli, Italy
| | - Pietro Ferraro
- CNR - ISASI Institute of Applied Sciences and Intelligent Systems, Via Campi Flegrei 34, 80078, Pozzuoli, Napoli, Italy
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32
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Snyder PJ, Kirste R, Collazo R, Ivanisevic A. Persistent Photoconductivity, Nanoscale Topography, and Chemical Functionalization Can Collectively Influence the Behavior of PC12 Cells on Wide Bandgap Semiconductor Surfaces. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1700481. [PMID: 28464526 DOI: 10.1002/smll.201700481] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 03/15/2017] [Indexed: 06/07/2023]
Abstract
Wide bandgap semiconductors such as gallium nitride (GaN) exhibit persistent photoconductivity properties. The incorporation of this asset into the fabrication of a unique biointerface is presented. Templates with lithographically defined regions with controlled roughness are generated during the semiconductor growth process. Template surface functional groups are varied using a benchtop surface functionalization procedure. The conductivity of the template is altered by exposure to UV light and the behavior of PC12 cells is mapped under different substrate conductivity. The pattern size and roughness are combined with surface chemistry to change the adhesion of PC12 cells when the GaN is made more conductive after UV light exposure. Furthermore, during neurite outgrowth, surface chemistry and initial conductivity difference are used to facilitate the extension to smoother areas on the GaN surface. These results can be utilized for unique bioelectronics interfaces to probe and control cellular behavior.
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Affiliation(s)
- Patrick J Snyder
- Department of Materials Science and Engineering, North Carolina State University, 911 Partners Way, Raleigh, NC, 27606, USA
| | - Ronny Kirste
- Department of Materials Science and Engineering, North Carolina State University, 911 Partners Way, Raleigh, NC, 27606, USA
- Adroit Materials, 2054 Kildaire Farm Rd., Suite 205, Cary, NC, 27518, USA
| | - Ramon Collazo
- Department of Materials Science and Engineering, North Carolina State University, 911 Partners Way, Raleigh, NC, 27606, USA
| | - Albena Ivanisevic
- Department of Materials Science and Engineering, North Carolina State University, 911 Partners Way, Raleigh, NC, 27606, USA
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33
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Lee YJ, Cintora P, Arikkath J, Akinsola O, Kandel M, Popescu G, Best-Popescu C. Quantitative assessment of neural outgrowth using spatial light interference microscopy. JOURNAL OF BIOMEDICAL OPTICS 2017; 22:66015. [PMID: 28655053 PMCID: PMC5482290 DOI: 10.1117/1.jbo.22.6.066015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 05/30/2017] [Indexed: 05/12/2023]
Abstract
Optimal growth as well as branching of axons and dendrites is critical for the nervous system function. Neuritic length, arborization, and growth rate determine the innervation properties of neurons and define each cell’s computational capability. Thus, to investigate the nervous system function, we need to develop methods and instrumentation techniques capable of quantifying various aspects of neural network formation: neuron process extension, retraction, stability, and branching. During the last three decades, fluorescence microscopy has yielded enormous advances in our understanding of neurobiology. While fluorescent markers provide valuable specificity to imaging, photobleaching, and photoxicity often limit the duration of the investigation. Here, we used spatial light interference microscopy (SLIM) to measure quantitatively neurite outgrowth as a function of cell confluence. Because it is label-free and nondestructive, SLIM allows for long-term investigation over many hours. We found that neurons exhibit a higher growth rate of neurite length in low-confluence versus medium- and high-confluence conditions. We believe this methodology will aid investigators in performing unbiased, nondestructive analysis of morphometric neuronal parameters.
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Affiliation(s)
- Young Jae Lee
- University of Illinois at Urbana-Champaign, Department of Bioengineering, Cellular Neuroscience and Imaging Laboratory, Urbana, Illinois, United States
| | - Pati Cintora
- University of Illinois at Urbana-Champaign, Department of Bioengineering, Cellular Neuroscience and Imaging Laboratory, Urbana, Illinois, United States
| | - Jyothi Arikkath
- University of Nebraska Medical Center, Munroe-Meyer Institute, Omaha, Nebraska, United States
| | - Olaoluwa Akinsola
- University of Illinois at Urbana-Champaign, Beckman Institute for Advanced Science and Technology, Department of Electrical and Computer Engineering, Quantitative Light Imaging Laboratory, Urbana, Illinois, United States
| | - Mikhail Kandel
- University of Illinois at Urbana-Champaign, Beckman Institute for Advanced Science and Technology, Department of Electrical and Computer Engineering, Quantitative Light Imaging Laboratory, Urbana, Illinois, United States
| | - Gabriel Popescu
- University of Illinois at Urbana-Champaign, Beckman Institute for Advanced Science and Technology, Department of Electrical and Computer Engineering, Quantitative Light Imaging Laboratory, Urbana, Illinois, United States
| | - Catherine Best-Popescu
- University of Illinois at Urbana-Champaign, Department of Bioengineering, Cellular Neuroscience and Imaging Laboratory, Urbana, Illinois, United States
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Li Y, Dai X, Bai Y, Liu Y, Wang Y, Liu O, Yan F, Tang Z, Zhang X, Deng X. Electroactive BaTiO 3 nanoparticle-functionalized fibrous scaffolds enhance osteogenic differentiation of mesenchymal stem cells. Int J Nanomedicine 2017; 12:4007-4018. [PMID: 28603415 PMCID: PMC5457183 DOI: 10.2147/ijn.s135605] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
It has been proven that the surface topographic cues of fiber arrangement can induce osteogenic differentiation of mesenchymal stem cells. However, this effect alone is weak and insufficient to meet the needs of regenerative medicine. In this work, electroactivity concept was introduced to enhance the osteoinductivity of fibrous scaffolds. The randomly oriented and aligned electroactive fibrous scaffolds of poly-(l-lactic acid) (PLLA) with incorporation of ferroelectric ceramic BaTiO3 (BTO) nanoparticles (NPs) were fabricated by electrospinning. Physicochemical properties, including fiber morphology, microstructure, composition, thermal stability, surface roughness, and surface wettability, of these fibrous scaffolds were studied. The dielectric properties of the scaffolds were evaluated. The results showed that the randomly oriented BTO/PLLA composite fibrous scaffolds had the highest dielectric permittivity of 1.19, which is of the same order of magnitude as the natural bone. The combined effects of fiber orientation and electrical activity on the osteogenic responses of bone marrow mesenchymal stem cells (BM-MSCs) were specifically investigated. Randomly oriented composite fibrous scaffolds significantly promoted polygonal spreading and encouraged early osteogenic differentiation in BM-MSCs, whereas aligned composite fibrous scaffolds promoted cell elongation and discouraged osteogenic differentiation. These results evidenced that randomly fiber orientation and biomimetic electric activity have combining effects on osteogenic differentiation of BM-MSCs. Our findings indicate that coupling effects of multi-physical properties should be paid more attention to mimic the microenvironment for enhancing osteogenic differentiation of BM-MSCs.
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Affiliation(s)
- Yiping Li
- Department of Prosthodontics, Xiangya Stomatological Hospital & School of Stomatology, Central South University, Changsha.,Department of Geriatric Dentistry
| | - Xiaohan Dai
- Department of Prosthodontics, Xiangya Stomatological Hospital & School of Stomatology, Central South University, Changsha
| | | | - Yun Liu
- Department of Geriatric Dentistry
| | - Yuehong Wang
- Department of Prosthodontics, Xiangya Stomatological Hospital & School of Stomatology, Central South University, Changsha
| | - Ousheng Liu
- Department of Prosthodontics, Xiangya Stomatological Hospital & School of Stomatology, Central South University, Changsha
| | - Fei Yan
- Department of Prosthodontics, Xiangya Stomatological Hospital & School of Stomatology, Central South University, Changsha
| | - Zhangui Tang
- Department of Prosthodontics, Xiangya Stomatological Hospital & School of Stomatology, Central South University, Changsha
| | - Xuehui Zhang
- Department of Dental Materials & Dental Medical Devices Testing Center, Peking University School and Hospital of Stomatology.,National Engineering Laboratory for Digital and Material Technology of Stomatology.,Beijing Laboratory of Biomedical Materials, Peking University School and Hospital of Stomatology, Beijing, People's Republic of China
| | - Xuliang Deng
- Department of Geriatric Dentistry.,National Engineering Laboratory for Digital and Material Technology of Stomatology.,Beijing Laboratory of Biomedical Materials, Peking University School and Hospital of Stomatology, Beijing, People's Republic of China
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35
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Mecozzi L, Gennari O, Rega R, Battista L, Ferraro P, Grilli S. Simple and Rapid Bioink Jet Printing for Multiscale Cell Adhesion Islands. Macromol Biosci 2016; 17. [DOI: 10.1002/mabi.201600307] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 09/21/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Laura Mecozzi
- Institute of Applied Science and Intelligent Systems of the National Council of Research (CNR-ISASI); Via Campi Flegrei 34 80078 Pozzuoli NA Italy
| | - Oriella Gennari
- Institute of Applied Science and Intelligent Systems of the National Council of Research (CNR-ISASI); Via Campi Flegrei 34 80078 Pozzuoli NA Italy
| | - Romina Rega
- Institute of Applied Science and Intelligent Systems of the National Council of Research (CNR-ISASI); Via Campi Flegrei 34 80078 Pozzuoli NA Italy
| | - Luigi Battista
- Institute of Applied Science and Intelligent Systems of the National Council of Research (CNR-ISASI); Via Campi Flegrei 34 80078 Pozzuoli NA Italy
| | - Pietro Ferraro
- Institute of Applied Science and Intelligent Systems of the National Council of Research (CNR-ISASI); Via Campi Flegrei 34 80078 Pozzuoli NA Italy
| | - Simonetta Grilli
- Institute of Applied Science and Intelligent Systems of the National Council of Research (CNR-ISASI); Via Campi Flegrei 34 80078 Pozzuoli NA Italy
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36
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Rega R, Gennari O, Mecozzi L, Grilli S, Pagliarulo V, Ferraro P. Bipolar Patterning of Polymer Membranes by Pyroelectrification. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:454-459. [PMID: 26584401 DOI: 10.1002/adma.201503711] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 09/17/2015] [Indexed: 06/05/2023]
Abstract
Polymer freestanding membranes with permanent bipolar patterns are fabricated by "pyroelectrification". The thermal stimulation of periodically poled lithium niobate (PPLN) crystals simultaneously generates the pyroelectric effect, the glass transition of the polymer, and therefore the periodic electric poling of the polymer. The reliability of these membranes is demonstrated for applications under both dry and wet conditions, including cell patterning.
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Affiliation(s)
- Romina Rega
- National Council of Research, Institute of Applied Science & Intelligent Systems (ISASI) "E. Caianiello,", Via Campi Flegrei 34, 80078, Pozzuoli, Naples, Italy
| | - Oriella Gennari
- National Council of Research, Institute of Applied Science & Intelligent Systems (ISASI) "E. Caianiello,", Via Campi Flegrei 34, 80078, Pozzuoli, Naples, Italy
| | - Laura Mecozzi
- National Council of Research, Institute of Applied Science & Intelligent Systems (ISASI) "E. Caianiello,", Via Campi Flegrei 34, 80078, Pozzuoli, Naples, Italy
- Engineering Department, University "Federico II,", P.le Tecchio 80, 80125, Napoli, Italy
| | - Simonetta Grilli
- National Council of Research, Institute of Applied Science & Intelligent Systems (ISASI) "E. Caianiello,", Via Campi Flegrei 34, 80078, Pozzuoli, Naples, Italy
| | - Vito Pagliarulo
- National Council of Research, Institute of Applied Science & Intelligent Systems (ISASI) "E. Caianiello,", Via Campi Flegrei 34, 80078, Pozzuoli, Naples, Italy
| | - Pietro Ferraro
- National Council of Research, Institute of Applied Science & Intelligent Systems (ISASI) "E. Caianiello,", Via Campi Flegrei 34, 80078, Pozzuoli, Naples, Italy
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37
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Snyder PJ, Kirste R, Collazo R, Ivanisevic A. Nanoscale topography, semiconductor polarity and surface functionalization: additive and cooperative effects on PC12 cell behavior. RSC Adv 2016. [DOI: 10.1039/c6ra21936e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
This work compares the behavior of PC12 cells on planar and patterned III-nitride materials with nanostructured topographies.
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Affiliation(s)
- Patrick J. Snyder
- Department of Materials Science and Engineering
- North Carolina State University
- Raleigh
- USA
| | - Ronny Kirste
- Department of Materials Science and Engineering
- North Carolina State University
- Raleigh
- USA
- Adroit Materials
| | - Ramon Collazo
- Department of Materials Science and Engineering
- North Carolina State University
- Raleigh
- USA
| | - Albena Ivanisevic
- Department of Materials Science and Engineering
- North Carolina State University
- Raleigh
- USA
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