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Liu L, Ma N, Wang L, Zhang Y, Wan YZ, Wang T, Qian W. Development of a Methodology Based on Optical Interferometry for Measuring Fibrinolytic Activity. Anal Chem 2024; 96:13482-13493. [PMID: 39094103 DOI: 10.1021/acs.analchem.4c01646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2024]
Abstract
Fibrinolytic activity assay is particularly important for the detection, diagnosis, and treatment of cardiovascular disease and the development of fibrinolytic drugs. A novel efficacious strategy for real-time and label-free dynamic detection of fibrinolytic activity based on ordered porous layer interferometry (OPLI) was developed. Fibrin or a mixture of fibrin and plasminogen (Plg) was loaded into the highly ordered silica colloidal crystal (SCC) film scaffold to construct a fibrinolytic response interference layer to measure fibrinolytic activity with different mechanisms of action. Fibrinolytic enzyme-triggered fibrinolysis led to the migration of interference fringes in the interferogram, which could be represented by optical thickness changes (ΔOT) tracked in real time by the OPLI system. The morphology and optical property of the fibrinolytic response interference layer were characterized, and the Plg content in the fibrinolytic response interference layer and experimental parameters of the system were optimized. The method showed adequate sensitivity for the fibrinolytic activity of lumbrokinase and streptokinase, with wide linear ranges of 12-6000 and 10-2000 U/mL, respectively. Compared with the traditional fibrin plate method, it has a lower detection limit and higher linearity. The whole kinetic process of fibrinolysis by these two fibrinolytic drug models was recorded in real time, and the Michaelis constant and apparent kinetic parameters were calculated. Importantly, some other blood proteins were less interfering with this system, and it showed reliability in fibrin activity detection in real whole blood samples. This study established a better and more targeted research method of in vitro fibrinolysis and provided dynamic monitoring data for the analysis of fibrinolytic activity of whole blood.
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Affiliation(s)
- Liming Liu
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Ning Ma
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Lu Wang
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Yu Zhang
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Yi-Zhen Wan
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Tianze Wang
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Weiping Qian
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
- OPLI (Suzhou) Biotechnology Company Limited, New District, Suzhou 215163, China
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2
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Wang L, Ma N, Zhang Y, Wang T, Liu L, Qian W. Real-time monitoring of peptic and tryptic digestions of immunoglobulin G and the impact of dietary hydrocolloids on digestion. Int J Biol Macromol 2024; 278:134649. [PMID: 39128763 DOI: 10.1016/j.ijbiomac.2024.134649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 06/19/2024] [Accepted: 08/08/2024] [Indexed: 08/13/2024]
Abstract
Immunoglobulin G (IgG) exhibits potent antiviral, antibacterial, and immunological activities. The digestion process and bioavailability of IgG are often a concern. Dietary hydrocolloids are crucial for regulating healthy digestion and the bioavailability of protein as functional components. Understanding the effects of dietary hydrocolloids on the digestive kinetics of IgG is requisite. Herein, the pepsin and trypsin digestion of IgG was investigated using ordered porous layer interferometry (OPLI). The real-time variation in the interference spectral shift reflected by OPLI can be converted into changes in the optical thickness (OT) to obtain a degradation kinetics curve. The impact of dietary hydrocolloids, including alginic acid sodium salt (ALG), polydextrose (PD), and konjac glucomannan (KG), on IgG degradation was evaluated using OPLI. The results demonstrated that ALG significantly inhibited the degradation of IgG by pepsin under acidic conditions, whereas the addition of PD increased the Michaelis-Menten constant for IgG degradation by trypsin. Notably, this dependence is not based on the hydrocolloid viscosity, but relies more on the electrical properties. The study enhances our understanding of how hydrocolloids affect IgG digestion and could provide valuable insights into preserving IgG activity and facilitating the development of oral drugs or health products related to IgG.
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Affiliation(s)
- Lu Wang
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China; Institute of Marine Biomedicine, Shenzhen Polytechnic University, Shenzhen 518055, China
| | - Ning Ma
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Yu Zhang
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Tianze Wang
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Liming Liu
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Weiping Qian
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China; OPLI (Suzhou) Biotechnology Co., Ltd, New District, Suzhou 215163, China.
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3
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Amouzadeh Tabrizi M, Acedo P. An electrochemical membrane-based aptasensor for detection of severe acute respiratory syndrome coronavirus-2 receptor-binding domain. APPLIED SURFACE SCIENCE 2022; 598:153867. [PMID: 35669218 PMCID: PMC9158412 DOI: 10.1016/j.apsusc.2022.153867] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 05/29/2022] [Accepted: 05/29/2022] [Indexed: 05/11/2023]
Abstract
Herein, we report an electrochemical membrane-based aptasensor for the determination of the SARS-CoV-2 receptor-binding domain (SARS-CoV-2-RBD). For this purpose, the nanoporous anodic aluminium oxide membrane (NPAOM) was first fabricated electrochemically. The NPAOM was then functionalized with 3-mercaptopropyl trimethoxysilane (NPAOM-Si-SH). After that, the NPAOM-Si-SH was decorated with gold nanoparticles by using gold ion and sodium borohydride. The NPAOM-Si-S-Aunano was then attached to the surface of the working electrode of a laser-engraved graphene electrode (LEGE). Subsequently, the LEGE/NPAOM-Si-S-Aunano was fixed inside a flow cell that was made by using a three-dimensional (3D) printer, and then thiolated aptamer was transferred into the flow cell using a pump. The electrochemical behavior of the LEGE/NPAOM-Si-S-Aunano-Aptamer was studied using square wave voltammetry (SWV) in the presence of potassium ferrocyanide as a redox probe. The response of the LEGE/NPAOM-Si-S-Aunano-Aptamer to the different concentrations of the SARS-CoV-2-RBD in human saliva sample was investigated in the concentration range of 2.5-40.0 ng/mL. The limit of the detection was found to be 0.8 ng/mL. The LEGE/NPAOM-Si-S-Aunano-Aptamer showed good selectivity to 5.0 ng/mL of SARS-CoV-2-RBD in the presence of five times of the interfering agents like hemagglutinin and neuraminidase as the influenza A virus major surface glycoproteins.
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Affiliation(s)
| | - Pablo Acedo
- Electronic Technology Department, Universidad Carlos III de Madrid, Leganés, Spain
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Wang L, Zhou L, Ma N, Su Q, Wan Y, Zhang Y, Wu F, Qian W. Real-time monitoring of immunoglobulin G levels in milk using an ordered porous layer interferometric optical sensor. Talanta 2022; 237:122958. [PMID: 34736683 DOI: 10.1016/j.talanta.2021.122958] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 10/04/2021] [Accepted: 10/08/2021] [Indexed: 10/20/2022]
Abstract
Immunoglobulin G (IgG) is a significant ingredient of immunological activity in milk and colostrum, the activity and content of which is easily disturbed by potentially conditional variant during sterilization. Therefore, developing robust methods for the detection of IgG levels in milk is especially important. Herein, protein A from the Staphylococcus aureus functionalized silica colloidal crystalline film (SCC@SPA) sensing unit combined with ordered porous layer interferometry (OPLI) for IgG detection in untreated bovine milk was developed. Calibration curves in milk and buffer were set up by the variations of the optical thickness (OT) of the sensing unit after the IgG association and dissociation phases. The influence of temperature on the level of IgG was evaluated. Furthermore, the identification of IgG levels with pasteurized milk and ultrahigh temperature (UHT) sterilized milk from the market randomly was successfully carried out without any sample pretreatment. More importantly, compared with other methods, this novel method has the advantages of convenient operation, low cost, and suitability for point-of-care (POC) testing.
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Affiliation(s)
- Lu Wang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Lele Zhou
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Ning Ma
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Qianqian Su
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China; School of Pharmacy, Jiangsu Ocean University, Lianyungang, 222005, China
| | - Yizhen Wan
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Yifan Zhang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Feng Wu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Weiping Qian
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China; OPLI (Suzhou) Biotechnology Co., Ltd, New District, Suzhou, 215163, China.
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5
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Real-Time Monitoring of Doxorubicin Release from Hybrid Nanoporous Anodic Alumina Structures. SENSORS 2021; 21:s21237819. [PMID: 34883823 PMCID: PMC8659439 DOI: 10.3390/s21237819] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 11/18/2021] [Accepted: 11/22/2021] [Indexed: 01/10/2023]
Abstract
This work demonstrates an advanced approach to fabricate Hybrid nanoporous anodic alumina gradient-index filters (Hy-NAA-GIFs) through a heterogeneous anodization process combining sinusoidal current-density anodization and constant potential anodization. As a result, the hybrid structure obtained reveals a single photonic stopband (PSB), which falls within the absorption region of the drug molecule and the intensity of the spectrum that are far from such absorption range. The prepared structures were loaded with the doxorubicin (DOX) drug through the drop-casting method, which allows for evaluating the maximum reflectance of the relative height of the PSB with the average reflectance of the spectrum intensity. Thereafter, this property has been applied in a flow cell setup connected to a reflectance spectrophotometer where different drug-loaded samples were placed to study the behavior and kinetics of the drug release in real-time by varying two parameters, i.e., different pore length and flow rates. As such, obtained results were analyzed with a model that includes a sum of two inverted exponential decay functions with two different characteristic time releases. Overall, this study opens up several possibilities for the Hy-NAA-GIFs to study the drug kinetics from nanoporous structures.
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Guttenplan APM, Tahmasebi Birgani Z, Giselbrecht S, Truckenmüller RK, Habibović P. Chips for Biomaterials and Biomaterials for Chips: Recent Advances at the Interface between Microfabrication and Biomaterials Research. Adv Healthc Mater 2021; 10:e2100371. [PMID: 34033239 DOI: 10.1002/adhm.202100371] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 05/08/2021] [Indexed: 12/24/2022]
Abstract
In recent years, the use of microfabrication techniques has allowed biomaterials studies which were originally carried out at larger length scales to be miniaturized as so-called "on-chip" experiments. These miniaturized experiments have a range of advantages which have led to an increase in their popularity. A range of biomaterial shapes and compositions are synthesized or manufactured on chip. Moreover, chips are developed to investigate specific aspects of interactions between biomaterials and biological systems. Finally, biomaterials are used in microfabricated devices to replicate the physiological microenvironment in studies using so-called "organ-on-chip," "tissue-on-chip" or "disease-on-chip" models, which can reduce the use of animal models with their inherent high cost and ethical issues, and due to the possible use of human cells can increase the translation of research from lab to clinic. This review gives an overview of recent developments at the interface between microfabrication and biomaterials science, and indicates potential future directions that the field may take. In particular, a trend toward increased scale and automation is apparent, allowing both industrial production of micron-scale biomaterials and high-throughput screening of the interaction of diverse materials libraries with cells and bioengineered tissues and organs.
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Affiliation(s)
- Alexander P. M. Guttenplan
- Department of Instructive Biomaterials Engineering MERLN Institute for Technology‐Inspired Regenerative Medicine Maastricht University Universiteitssingel 40 Maastricht 6229ER The Netherlands
| | - Zeinab Tahmasebi Birgani
- Department of Instructive Biomaterials Engineering MERLN Institute for Technology‐Inspired Regenerative Medicine Maastricht University Universiteitssingel 40 Maastricht 6229ER The Netherlands
| | - Stefan Giselbrecht
- Department of Instructive Biomaterials Engineering MERLN Institute for Technology‐Inspired Regenerative Medicine Maastricht University Universiteitssingel 40 Maastricht 6229ER The Netherlands
| | - Roman K. Truckenmüller
- Department of Instructive Biomaterials Engineering MERLN Institute for Technology‐Inspired Regenerative Medicine Maastricht University Universiteitssingel 40 Maastricht 6229ER The Netherlands
| | - Pamela Habibović
- Department of Instructive Biomaterials Engineering MERLN Institute for Technology‐Inspired Regenerative Medicine Maastricht University Universiteitssingel 40 Maastricht 6229ER The Netherlands
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Wu F, Wan Y, Wang L, Zhou L, Ma N, Qian W. Construction of Optical Interference Fibrin and Thrombolysis Analysis with Silica Colloidal Crystal Films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:7264-7272. [PMID: 34080427 DOI: 10.1021/acs.langmuir.1c01020] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Developing powerful real-time methods for monitoring the thrombolytic process is highly desirable for the early therapy of thrombus diseases. Herein, an optical interference fibrin was constructed, fabricated by assembling a 190 nm silica colloidal crystal on glass slides, for detecting a thrombolytic process through the shift of interference peaks caused by the variation of the thicknesses of a silica colloidal crystal film with loaded fibrin dissolution. The whole kinetic progress of thrombolysis by nattokinase and urokinase as thrombolytic drug models was recorded, and the kinetic data were calculated. Moreover, the developed method shows excellent sensitivity for the activity of nattokinase and urokinase with wide linear ranges of approximately 0.75-750 and 5-1000 units mL-1, respectively. Thus, this method can be used as a real-time, low-cost, and simple system for monitoring the thrombolytic process of drugs, demonstrating huge potential in the development of treating thromboembolic diseases and screening drugs.
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Affiliation(s)
- Feng Wu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China
| | - Yizhen Wan
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China
| | - Lu Wang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China
| | - Lele Zhou
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China
| | - Ning Ma
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China
| | - Weiping Qian
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China
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8
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Abstract
Implant-associated infections (IAIs) are among the most intractable and costly complications in implant surgery. They can lead to surgery failure, a high economic burden, and a decrease in patient quality of life. This manuscript is devoted to introducing current antimicrobial strategies for additively manufactured (AM) titanium (Ti) implants and fostering a better understanding in order to pave the way for potential modern high-throughput technologies. Most bactericidal strategies rely on implant structure design and surface modification. By means of rational structural design, the performance of AM Ti implants can be improved by maintaining a favorable balance between the mechanical, osteogenic, and antibacterial properties. This subject becomes even more important when working with complex geometries; therefore, it is necessary to select appropriate surface modification techniques, including both topological and chemical modification. Antibacterial active metal and antibiotic coatings are among the most commonly used chemical modifications in AM Ti implants. These surface modifications can successfully inhibit bacterial adhesion and biofilm formation, and bacterial apoptosis, leading to improved antibacterial properties. As a result of certain issues such as drug resistance and cytotoxicity, the development of novel and alternative antimicrobial strategies is urgently required. In this regard, the present review paper provides insights into the enhancement of bactericidal properties in AM Ti implants.
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9
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Optical Platform to Analyze a Model Drug-Loading and Releasing Profile Based on Nanoporous Anodic Alumina Gradient Index Filters. NANOMATERIALS 2021; 11:nano11030730. [PMID: 33799415 PMCID: PMC7998892 DOI: 10.3390/nano11030730] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 03/09/2021] [Accepted: 03/11/2021] [Indexed: 12/03/2022]
Abstract
In this work, a methodology that exploits the optical properties of the nanoporous anodic alumina gradient index filters (NAA-GIFs) has been developed and applied to evaluate in real time the release dynamics of a cargo molecule, acting as a model drug, filling the pores. NAA-GIFs with two photonic stopbands (PSBs) were prepared with one of its stop bands in the same absorption wavelength range of the cargo molecule, whereas the second stopband away from this absorption range. Numerical simulation and experiments confirm that the relative height of the high reflectance bands in the reflectance spectra of NAA-GIFs filled with the drug can be related to the relative amount of drug filling the pores. This property has been applied in a flow cell setup to measure in real-time the release dynamics of NAA-GIFs with the inner pore surface modified by layer-by-layer deposition of polyelectrolytes and loaded with the cargo molecule. The methodology developed in this work acts as a tool for the study of drug delivery from porous nanostructures.
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10
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Experimental study and modeling of in vitro agrochemicals release from nanoporous anodic alumina. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-019-01045-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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11
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Fazli-Abukheyli R, Rahimi MR, Ghaedi M. Electrospinning coating of nanoporous anodic alumina for controlling the drug release: Drug release study and modeling. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.101247] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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12
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Kaur S, Law CS, Williamson NH, Kempson I, Popat A, Kumeria T, Santos A. Environmental Copper Sensor Based on Polyethylenimine-Functionalized Nanoporous Anodic Alumina Interferometers. Anal Chem 2019; 91:5011-5020. [PMID: 30793604 PMCID: PMC6543834 DOI: 10.1021/acs.analchem.8b04963] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Anthropogenic copper pollution of environmental waters from sources such as acid mine drainage, antifouling paints, and industrial waste discharge is a major threat to our environment and human health. This study presents an optical sensing system that combines self-assembled glutaraldehyde-cross-linked double-layered polyethylenimine (PEI-GA-PEI)-modified nanoporous anodic alumina (NAA) interferometers with reflectometric interference spectroscopy (RIfS) for label-free, selective monitoring of ionic copper in environmental waters. Calibration of the sensing system with analytical solutions of copper shows a linear working range between 1 and 100 mg L-1, and a low limit of detection of 0.007 ± 0.001 mg L-1 (i.e., ∼0.007 ppm). Changes in the effective optical thickness (ΔOTeff) of PEI-GA-PEI-functionalized NAA interferometers are monitored in real-time by RIfS, and correlated with the amount of ionic copper present in aqueous solutions. The system performance is validated through X-ray photoelectron spectroscopy (XPS) and the spatial distribution of copper within the nanoporous films is characterized by time-of-flight-secondary ion mass spectroscopy (TOF-SIMS). The specificity and chemical selectivity of the PEI-GA-PEI-NAA sensor to Cu2+ ions is verified by screening six different metal ion solutions containing potentially interfering ions such as Al3+, Cd2+, Fe3+, Pb2+, Ni2+, and Zn2+. Finally, the performance of the PEI-GA-PEI-NAA sensor for real-life applications is demonstrated using legacy acid mine drainage liquid and tap water for qualitative and quantitative detection of copper ions. This study provides new opportunities to develop portable, cost-competitive, and ultrasensitive sensing systems for real-life environmental applications.
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Affiliation(s)
- Simarpreet Kaur
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
| | - Cheryl Suwen Law
- School of Chemical Engineering, The University of Adelaide, Adelaide, South Australia 5005, Australia
- Institute for Photonics and Advanced Sensing, The University of Adelaide, Adelaide, South Australia 5005, Australia
- ARC Centre of Excellence for Nanoscale BioPhotonics, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Nathan Hu Williamson
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
- Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Ivan Kempson
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
| | - Amirali Popat
- School of Pharmacy, The University of Queensland, PACE Building, Brisbane, Queensland 40172, Australia
| | - Tushar Kumeria
- School of Pharmacy, The University of Queensland, PACE Building, Brisbane, Queensland 40172, Australia
| | - Abel Santos
- School of Chemical Engineering, The University of Adelaide, Adelaide, South Australia 5005, Australia
- Institute for Photonics and Advanced Sensing, The University of Adelaide, Adelaide, South Australia 5005, Australia
- ARC Centre of Excellence for Nanoscale BioPhotonics, The University of Adelaide, Adelaide, South Australia 5005, Australia
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13
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Kojima T. Combined Reflectometric Interference Spectroscopy and Quartz Crystal Microbalance Detect Differential Adsorption of Lipid Vesicles with Different Phase Transition Temperatures on SiO2, TiO2, and Au Surfaces. Anal Chem 2017; 89:13596-13602. [DOI: 10.1021/acs.analchem.7b04105] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Taisuke Kojima
- Department of Biomedical Engineering, Georgia Institute of Technology, 950 Atlantic Drive NW, Atlanta, Georgia 30332, United States
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14
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Murschel F, Fortier C, Jolicoeur M, Hodges RS, De Crescenzo G. Two Complementary Approaches for the Controlled Release of Biomolecules Immobilized via Coiled-Coil Interactions: Peptide Core Mutations and Multivalent Presentation. Biomacromolecules 2017; 18:965-975. [DOI: 10.1021/acs.biomac.6b01830] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Frederic Murschel
- Department
of Chemical Engineering, Groupe de Recherche en Sciences et Technologies
Biomédicales (GRSTB), Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succursale Centre-Ville, Montréal, Quebec H3C 3A7, Canada
| | - Charles Fortier
- Department
of Chemical Engineering, Groupe de Recherche en Sciences et Technologies
Biomédicales (GRSTB), Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succursale Centre-Ville, Montréal, Quebec H3C 3A7, Canada
| | - Mario Jolicoeur
- Department
of Chemical Engineering, Groupe de Recherche en Sciences et Technologies
Biomédicales (GRSTB), Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succursale Centre-Ville, Montréal, Quebec H3C 3A7, Canada
| | - Robert S. Hodges
- Department
of Biochemistry and Molecular Genetics, University of Colorado, School of Medicine, Anschutz Medical Campus, Aurora, Colorado 80045, United States
| | - Gregory De Crescenzo
- Department
of Chemical Engineering, Groupe de Recherche en Sciences et Technologies
Biomédicales (GRSTB), Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succursale Centre-Ville, Montréal, Quebec H3C 3A7, Canada
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15
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Fischer C, Oschatz M, Nickel W, Leistenschneider D, Kaskel S, Brunner E. Bioinspired carbide-derived carbons with hierarchical pore structure for the adsorptive removal of mercury from aqueous solution. Chem Commun (Camb) 2017; 53:4845-4848. [DOI: 10.1039/c6cc08041c] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Biosilica of the diatom species Thalassiosira pseudonana is used as hard template for the synthesis of silicon carbide-derived carbons.
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Affiliation(s)
- C. Fischer
- Department of Bioanalytic Chemistry, Dresden University of Technology, Bergstraße 66
- Dresden
- Germany
| | - M. Oschatz
- Max Planck Institute of Colloids and Interfaces, Department of Colloid Chemistry, Wissenschaftspark Potsdam-Golm, Am Mühlenberg 1
- Potsdam
- Germany
- Department of Inorganic Chemistry, Dresden University of Technology, Bergstraße 66
- Dresden
| | - W. Nickel
- Department of Inorganic Chemistry, Dresden University of Technology, Bergstraße 66
- Dresden
- Germany
| | - D. Leistenschneider
- Department of Inorganic Chemistry, Dresden University of Technology, Bergstraße 66
- Dresden
- Germany
| | - S. Kaskel
- Department of Inorganic Chemistry, Dresden University of Technology, Bergstraße 66
- Dresden
- Germany
| | - E. Brunner
- Department of Bioanalytic Chemistry, Dresden University of Technology, Bergstraße 66
- Dresden
- Germany
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16
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King D, McGinty S. Assessing the potential of mathematical modelling in designing drug-releasing orthopaedic implants. J Control Release 2016; 239:49-61. [PMID: 27521893 DOI: 10.1016/j.jconrel.2016.08.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 08/04/2016] [Accepted: 08/07/2016] [Indexed: 12/26/2022]
Abstract
Orthopaedic implants have been the subject of intense research in recent years, with academics, clinicians and industrialists seeking to broaden our understanding of their function and potential consequences within the human body. Current research is focussed on ways to improve the integration of an orthopaedic device within the body, whether it be to encourage better osseointegration, combat possible infection or stem the foreign body response. A key emerging strategy is the controlled delivery of therapeutics from the device, which may take the form of, for example, antibiotics, analgesics, anti-inflammatories or growth factors. However, the optimal device design that gives rise to the desired controlled release has yet to be defined. There are many examples in the literature of experimental approaches which attempt to tackle this issue. However, the necessity of having to conduct multiple experiments to test different scenarios is a major drawback of this approach. So enter stage left: mathematical modelling. Using a mathematical modelling approach can provide much more than experiments in isolation. For instance, a mathematical model can help identify key drug release mechanisms and uncover the rate limiting processes; allow for the estimation of values of the parameters controlling the system; quantify the effect of the interaction with the biological environment; and aid with the design of optimisation strategies for controlled drug release. In this paper we review current experimental approaches and some relevant mathematical models and suggest the future direction of such approaches in this field.
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Affiliation(s)
- David King
- Division of Biomedical Engineering, University of Glasgow, Glasgow, UK
| | - Sean McGinty
- Division of Biomedical Engineering, University of Glasgow, Glasgow, UK.
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Santos A, Pereira T, Law CS, Losic D. Rational engineering of nanoporous anodic alumina optical bandpass filters. NANOSCALE 2016; 8:14846-14857. [PMID: 27453573 DOI: 10.1039/c6nr03490j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Herein, we present a rationally designed advanced nanofabrication approach aiming at producing a new type of optical bandpass filters based on nanoporous anodic alumina photonic crystals. The photonic stop band of nanoporous anodic alumina (NAA) is engineered in depth by means of a pseudo-stepwise pulse anodisation (PSPA) approach consisting of pseudo-stepwise asymmetric current density pulses. This nanofabrication method makes it possible to tune the transmission bands of NAA at specific wavelengths and bandwidths, which can be broadly modified across the UV-visible-NIR spectrum through the anodisation period (i.e. time between consecutive pulses). First, we establish the effect of the anodisation period as a means of tuning the position and width of the transmission bands of NAA across the UV-visible-NIR spectrum. To this end, a set of nanoporous anodic alumina bandpass filters (NAA-BPFs) are produced with different anodisation periods, ranging from 500 to 1200 s, and their optical properties (i.e. characteristic transmission bands and interferometric colours) are systematically assessed. Then, we demonstrate that the rational combination of stacked NAA-BPFs consisting of layers of NAA produced with different PSPA periods can be readily used to create a set of unique and highly selective optical bandpass filters with characteristic transmission bands, the position, width and number of which can be precisely engineered by this rational anodisation approach. Finally, as a proof-of-concept, we demonstrate that the superposition of stacked NAA-BPFs produced with slight modifications of the anodisation period enables the fabrication of NAA-BPFs with unprecedented broad transmission bands across the UV-visible-NIR spectrum. The results obtained from our study constitute the first comprehensive rationale towards advanced NAA-BPFs with fully controllable photonic properties. These photonic crystal structures could become a promising alternative to traditional optical bandpass filters based on glass and plastic.
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Affiliation(s)
- Abel Santos
- School of Chemical Engineering, The University of Adelaide, Engineering North Building, 5005 Adelaide, Australia. and Institute for Photonics and Advanced Sensing (IPAS), The University of Adelaide, 5005 Adelaide, Australia and ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), The University of Adelaide, 5005 Adelaide, Australia
| | - Taj Pereira
- School of Chemical Engineering, The University of Adelaide, Engineering North Building, 5005 Adelaide, Australia.
| | - Cheryl Suwen Law
- School of Chemical Engineering, The University of Adelaide, Engineering North Building, 5005 Adelaide, Australia.
| | - Dusan Losic
- School of Chemical Engineering, The University of Adelaide, Engineering North Building, 5005 Adelaide, Australia.
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18
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Kaur G, Willsmore T, Gulati K, Zinonos I, Wang Y, Kurian M, Hay S, Losic D, Evdokiou A. Titanium wire implants with nanotube arrays: A study model for localized cancer treatment. Biomaterials 2016; 101:176-88. [PMID: 27289379 DOI: 10.1016/j.biomaterials.2016.05.048] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 03/21/2016] [Accepted: 05/27/2016] [Indexed: 12/11/2022]
Abstract
Adverse complications associated with systemic administration of anti-cancer drugs are a major problem in cancer therapy in current clinical practice. To increase effectiveness and reduce side effects, localized drug delivery to tumour sites requiring therapy is essential. Direct delivery of potent anti-cancer drugs locally to the cancer site based on nanotechnology has been recognised as a promising alternative approach. Previously, we reported the design and fabrication of nano-engineered 3D titanium wire based implants with titania (TiO2) nanotube arrays (Ti-TNTs) for applications such as bone integration by using in-vitro culture systems. The aim of present study is to demonstrate the feasibility of using such Ti-TNTs loaded with anti-cancer agent for localized cancer therapy using pre-clinical cancer models and to test local drug delivery efficiency and anti-tumour efficacy within the tumour environment. TNF-related apoptosis-inducing ligand (TRAIL) which has proven anti-cancer properties was selected as the model drug for therapeutic delivery by Ti-TNTs. Our in-vitro 2D and 3D cell culture studies demonstrated a significant decrease in breast cancer cell viability upon incubation with TRAIL loaded Ti-TNT implants (TRAIL-TNTs). Subcutaneous tumour xenografts were established to test TRAIL-TNTs implant performance in the tumour environment by monitoring the changes in tumour burden over a selected time course. TRAIL-TNTs showed a significant regression in tumour burden within the first three days of implant insertion at the tumour site. Based on current experimental findings these Ti-TNTs wire implants have shown promising capacity to load and deliver anti-cancer agents maintaining their efficacy for cancer treatment.
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Affiliation(s)
- Gagandeep Kaur
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA, 5005, Australia; School of Medicine, Discipline of Surgery, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Tamsyn Willsmore
- School of Medicine, Discipline of Surgery, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Karan Gulati
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Irene Zinonos
- School of Medicine, Discipline of Surgery, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Ye Wang
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Mima Kurian
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Shelley Hay
- School of Medicine, Discipline of Surgery, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Dusan Losic
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Andreas Evdokiou
- School of Medicine, Discipline of Surgery, The University of Adelaide, Adelaide, SA, 5005, Australia.
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Shetab Boushehri MA, Lamprecht A. Nanoparticles as drug carriers: current issues with in vitro testing. Nanomedicine (Lond) 2015; 10:3213-30. [DOI: 10.2217/nnm.15.154] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Incorporation of nanotechnology in the field of drug delivery has created exciting opportunities for the purposeful design of nanocarriers with potentials such as targeted delivery or controlled release of the incorporated cargo, improvement of bioavailability and reduction of therapeutic side-effects. Prior to in vivo administration, nanocarriers should undergo a set of in vitro evaluation procedures to ensure their stability, safety, conformity and ability to fulfill the desired mission. In this paper, current issues with in vitro evaluation techniques used for nanocarrier characterization (assessment of particle size, surface charge, drug release and toxicity) will be discussed. Furthermore, sufficiency of in vitro evaluation procedures for the prediction of in vivo scenarios and the necessary considerations to improve the correlation between the two settings will be debated.
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Affiliation(s)
| | - Alf Lamprecht
- Department of Pharmaceutics, Institute of Pharmacy, University of Bonn, Bonn, Germany
- Laboratory of Pharmaceutical Engineering (EA4267), University of Franche-Comté, Besançon, France
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Hu T, Yang J, Cui K, Rao Q, Yin T, Tan L, Zhang Y, Li Z, Wang G. Controlled Slow-Release Drug-Eluting Stents for the Prevention of Coronary Restenosis: Recent Progress and Future Prospects. ACS APPLIED MATERIALS & INTERFACES 2015; 7:11695-11712. [PMID: 26011753 DOI: 10.1021/acsami.5b01993] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Drug-eluting stents (DES) have become more widely used by cardiologists than bare metal stents (BMS) because of their better ability to control restenosis. However, recognized negative events, particularly including delayed or incomplete endothelialization and late stent thrombosis, have caused concerns over the long-term safety of DES. Although stent-based drug delivery can facilitate a drug's release directly to the restenosis site, a burst of drug release can seriously affect the pharmacological action and is a major factor accounting for adverse effects. Therefore, the drug release rate has become an important criterion in evaluating DES. The factors affecting the drug release rate include the drug carrier, drug, coating methods, drug storage, elution direction, coating thickness, pore size in the coating, release conditions (release medium, pH value, temperature), and hemodynamics after the stent implantation. A better understanding of how these factors influence drug release is particularly important for the reasonable use of efficient control strategies for drug release. This review summarizes the factors influencing the drug release from DES and presents strategies for enhancing the control of the drug's release, including the stent design, the application of absorbable stents, the development of new polymers, and the application of nanocarriers and improvements in the coating technology. Therefore, this paper provides a reference for the preparation of novel controlled slow-release DES.
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Affiliation(s)
- Tingzhang Hu
- †Key Laboratory for Biorheological Science and Technology of Ministry of Education (Chongqing University), State and Local Joint Engineering Laboratory for Vascular Implants (Chongqing), Bioengineering College of Chongqing University, Chongqing 400030, China
| | - Jiali Yang
- †Key Laboratory for Biorheological Science and Technology of Ministry of Education (Chongqing University), State and Local Joint Engineering Laboratory for Vascular Implants (Chongqing), Bioengineering College of Chongqing University, Chongqing 400030, China
| | - Kun Cui
- ‡Center of Cardiology, Chongqing Zhongshan Hospital, Chongqing 400013, China
| | - Qiong Rao
- †Key Laboratory for Biorheological Science and Technology of Ministry of Education (Chongqing University), State and Local Joint Engineering Laboratory for Vascular Implants (Chongqing), Bioengineering College of Chongqing University, Chongqing 400030, China
| | - Tieying Yin
- †Key Laboratory for Biorheological Science and Technology of Ministry of Education (Chongqing University), State and Local Joint Engineering Laboratory for Vascular Implants (Chongqing), Bioengineering College of Chongqing University, Chongqing 400030, China
| | - Lili Tan
- †Key Laboratory for Biorheological Science and Technology of Ministry of Education (Chongqing University), State and Local Joint Engineering Laboratory for Vascular Implants (Chongqing), Bioengineering College of Chongqing University, Chongqing 400030, China
| | - Yuan Zhang
- ‡Center of Cardiology, Chongqing Zhongshan Hospital, Chongqing 400013, China
| | - Zhenggong Li
- ‡Center of Cardiology, Chongqing Zhongshan Hospital, Chongqing 400013, China
| | - Guixue Wang
- †Key Laboratory for Biorheological Science and Technology of Ministry of Education (Chongqing University), State and Local Joint Engineering Laboratory for Vascular Implants (Chongqing), Bioengineering College of Chongqing University, Chongqing 400030, China
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Pujari-Palmer S, Pujari-Palmer M, Karlsson Ott M. Reduced oxidative stress in primary human cells by antioxidant released from nanoporous alumina. J Biomed Mater Res B Appl Biomater 2015; 104:568-75. [DOI: 10.1002/jbm.b.33427] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 03/09/2015] [Accepted: 03/20/2015] [Indexed: 11/09/2022]
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Law CS, Santos A, Kumeria T, Losic D. Engineered therapeutic-releasing nanoporous anodic alumina-aluminum wires with extended release of therapeutics. ACS APPLIED MATERIALS & INTERFACES 2015; 7:3846-3853. [PMID: 25625878 DOI: 10.1021/am5091963] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this study, we present a nanoengineered therapeutic-releasing system based on aluminum wires featuring nanoporous anodic alumina layers and chitosan coatings. Nanoporous anodic alumina layers are produced on the surface of aluminum wires by electrochemical anodization. These nanoporous layers with precisely engineered nanopore geometry are used as nanocontainers for bovine serum albumin molecules labeled with fluorescein isothiocyanate (BSA-FITC), which is selected as a model drug. The surface of these therapeutic-releasing implants is coated with a biocompatible and biodegradable polymer, chitosan, in order to achieve a sustained release of protein over extended periods of time. The performance of this therapeutic-releasing device is systematically assessed through a series of experiments under static and dynamic flow conditions. In these experiments, the effect of such parameters as the number of layers of chitosan coating and the temperature and pH of the eluting medium is established. The obtained results reveal that the proposed therapeutic-releasing system based on nanoporous aluminum wires can be engineered with sustained release performance for up to 6.5 weeks, which is a critical factor for medical treatments using sensitive therapeutics such as proteins and genes when a localized delivery is desired.
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Affiliation(s)
- Cheryl Suwen Law
- School of Chemical Engineering, The University of Adelaide , Adelaide, SA 5005, Australia
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23
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Sensing and Biosensing Applications of Nanoporous Anodic Alumina. ELECTROCHEMICALLY ENGINEERED NANOPOROUS MATERIALS 2015. [DOI: 10.1007/978-3-319-20346-1_7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Kumeria T, Santos A, Losic D. Nanoporous anodic alumina platforms: engineered surface chemistry and structure for optical sensing applications. SENSORS (BASEL, SWITZERLAND) 2014; 14:11878-918. [PMID: 25004150 PMCID: PMC4168464 DOI: 10.3390/s140711878] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 06/23/2014] [Accepted: 06/25/2014] [Indexed: 12/27/2022]
Abstract
Electrochemical anodization of pure aluminum enables the growth of highly ordered nanoporous anodic alumina (NAA) structures. This has made NAA one of the most popular nanomaterials with applications including molecular separation, catalysis, photonics, optoelectronics, sensing, drug delivery, and template synthesis. Over the past decades, the ability to engineer the structure and surface chemistry of NAA and its optical properties has led to the establishment of distinctive photonic structures that can be explored for developing low-cost, portable, rapid-response and highly sensitive sensing devices in combination with surface plasmon resonance (SPR) and reflective interference spectroscopy (RIfS) techniques. This review article highlights the recent advances on fabrication, surface modification and structural engineering of NAA and its application and performance as a platform for SPR- and RIfS-based sensing and biosensing devices.
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Affiliation(s)
- Tushar Kumeria
- School of Chemical Engineering, Engineering North Building, The University of Adelaide, North Terrace Campus, Adelaide SA 5005, Australia.
| | - Abel Santos
- School of Chemical Engineering, Engineering North Building, The University of Adelaide, North Terrace Campus, Adelaide SA 5005, Australia.
| | - Dusan Losic
- School of Chemical Engineering, Engineering North Building, The University of Adelaide, North Terrace Campus, Adelaide SA 5005, Australia.
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25
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Santos A, Kumeria T, Losic D. Nanoporous Anodic Alumina: A Versatile Platform for Optical Biosensors. MATERIALS 2014; 7:4297-4320. [PMID: 28788678 PMCID: PMC5455904 DOI: 10.3390/ma7064297] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2014] [Revised: 05/24/2014] [Accepted: 05/27/2014] [Indexed: 02/04/2023]
Abstract
Nanoporous anodic alumina (NAA) has become one of the most promising nanomaterials in optical biosensing as a result of its unique physical and chemical properties. Many studies have demonstrated the outstanding capabilities of NAA for developing optical biosensors in combination with different optical techniques. These results reveal that NAA is a promising alternative to other widely explored nanoporous platforms, such as porous silicon. This review is aimed at reporting on the recent advances and current stage of development of NAA-based optical biosensing devices. The different optical detection techniques, principles and concepts are described in detail along with relevant examples of optical biosensing devices using NAA sensing platforms. Furthermore, we summarise the performance of these devices and provide a future perspective on this promising research field.
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Affiliation(s)
- Abel Santos
- School of Chemical Engineering, The University of Adelaide, Engineering North Building, Adelaide 5005, Australia.
| | - Tushar Kumeria
- School of Chemical Engineering, The University of Adelaide, Engineering North Building, Adelaide 5005, Australia.
| | - Dusan Losic
- School of Chemical Engineering, The University of Adelaide, Engineering North Building, Adelaide 5005, Australia.
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Santos A, Sinn Aw M, Bariana M, Kumeria T, Wang Y, Losic D. Drug-releasing implants: current progress, challenges and perspectives. J Mater Chem B 2014; 2:6157-6182. [DOI: 10.1039/c4tb00548a] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
This review presents the different types and concepts of drug-releasing implants using new nanomaterials and nanotechnology-based devices.
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Affiliation(s)
- Abel Santos
- School of Chemical Engineering
- The University of Adelaide
- 5005 Adelaide, Australia
| | - Moom Sinn Aw
- School of Chemical Engineering
- The University of Adelaide
- 5005 Adelaide, Australia
| | - Manpreet Bariana
- School of Chemical Engineering
- The University of Adelaide
- 5005 Adelaide, Australia
- School of Dentistry
- The University of Adelaide
| | - Tushar Kumeria
- School of Chemical Engineering
- The University of Adelaide
- 5005 Adelaide, Australia
| | - Ye Wang
- School of Chemical Engineering
- The University of Adelaide
- 5005 Adelaide, Australia
| | - Dusan Losic
- School of Chemical Engineering
- The University of Adelaide
- 5005 Adelaide, Australia
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Kumeria T, Santos A, Losic D. Ultrasensitive nanoporous interferometric sensor for label-free detection of gold(III) ions. ACS APPLIED MATERIALS & INTERFACES 2013; 5:11783-90. [PMID: 24125471 DOI: 10.1021/am403465x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In this study, we present an ultrasensitive sensor based on nanoporous anodic alumina (NAA) for detection of gold(III) ions (Au(3+) ions) using reflectometric interference spectroscopy (RIfS). Nanoporous anodic alumina, prepared by two-step electrochemical anodization, was functionalized with 3-mercaptopropyl-tirethoxysilane (MPTES) in order to selectively detect Au(3+) ions. Thus prepared, MPTES-NAA sensors were exposed to different concentrations of Au(3+) ions ranging from 0.1 to 750 μM and the changes in the effective optical thickness (ΔEOT) were monitored in real-time. The linear range of these Au(3+) sensors was from 0.1 to 80 μM, with a lower detection limit of 0.1 μM of Au(3+) ions. Furthermore, the specificity of these MPTES-NAA sensors was validated by sequential exposure to 40 μM solutions of Fe(3+,) Mg(2+), Co(2+), Cu(2+), Ni(2+), Ag(+), and Pb(2+), resulting in negligible changes in EOT as compared to the same concentration of Au(3+) ions. Detection of Au(3+) ions in complex and environmentally and biologically relevant solvents such as tap water and phosphate buffer solution (PBS) was also successfully carried out in order to demonstrate the real-life application of these sensors. Finally, the binding isotherm for Au(3+) ions and thiol (SH) group of MPTES-NAA system was determined by fitting the changes in EOT to Freundlich and Langmuir isotherm models.
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Affiliation(s)
- Tushar Kumeria
- School of Chemical Engineering, The University of Adelaide , Adelaide, South Australia, 5005, Australia
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