1
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Zhang DX, Tieu T, Esser L, Wojnilowicz M, Lee CH, Cifuentes-Rius A, Thissen H, Voelcker NH. Differential Surface Engineering Generates Core-Shell Porous Silicon Nanoparticles for Controlled and Targeted Delivery of an Anticancer Drug. ACS Appl Mater Interfaces 2022; 14:54539-54549. [PMID: 36469497 DOI: 10.1021/acsami.2c16370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
An approach to differentially modify the internal surface of porous silicon nanoparticles (pSiNPs) with hydrophobic dodecene and the external surface with antifouling poly-N-(2-hydroxypropyl) acrylamide (polyHPAm) as well as a cell-targeting peptide was developed. Specifically, to generate these core-shell pSiNPs, the interior surface of a porous silicon (pSi) film was hydrosilylated with 1-dodecene, followed by ultrasonication to create pSiNPs. The new external surfaces were modified by silanization with a polymerization initiator, and surface-initiated atom transfer radical polymerization was performed to introduce polyHPAm brushes. Afterward, a fraction of the polymer side chain hydroxyl groups was activated to conjugate cRGDfK─a peptide with a high affinity and selectivity for the ανβ3 integrin receptor that is overexpressed in prostate and melanoma cancers. Finally, camptothecin, a hydrophobic anti-cancer drug, was successfully loaded into the pores. This drug delivery system showed excellent colloidal stability in a cell culture medium, and the in vitro drug release kinetics could be fine-tuned by the combination of internal and external surface modifications. In vitro studies by confocal microscopy and flow cytometry revealed improved cellular association attributed to cRGDfK. Furthermore, the cell viability results showed that the drug-loaded and peptide-functionalized nanoparticles had enhanced cytotoxicity toward a C4-2B prostate carcinoma cell line in both 2D cell culture and a 3D spheroid model.
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Affiliation(s)
- De-Xiang Zhang
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Manufacturing, Clayton, Victoria 3168, Australia
| | - Terence Tieu
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Manufacturing, Clayton, Victoria 3168, Australia
| | - Lars Esser
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Manufacturing, Clayton, Victoria 3168, Australia
| | - Marcin Wojnilowicz
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Manufacturing, Clayton, Victoria 3168, Australia
| | - Chieh-Hua Lee
- Department of Biological Science and Technology, China Medical University, Taichung 40402, Taiwan
| | - Anna Cifuentes-Rius
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Helmut Thissen
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Manufacturing, Clayton, Victoria 3168, Australia
| | - Nicolas H Voelcker
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Manufacturing, Clayton, Victoria 3168, Australia
- Melbourne Centre for Nanofabrication, Victorian Node of Australian National Fabrication Facility, Clayton, Victoria 3168, Australia
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2
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Ansari MJ, Rajendran RR, Mohanto S, Agarwal U, Panda K, Dhotre K, Manne R, Deepak A, Zafar A, Yasir M, Pramanik S. Poly( N-isopropylacrylamide)-Based Hydrogels for Biomedical Applications: A Review of the State-of-the-Art. Gels 2022; 8:454. [PMID: 35877539 PMCID: PMC9323937 DOI: 10.3390/gels8070454] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/08/2022] [Accepted: 07/08/2022] [Indexed: 12/21/2022] Open
Abstract
A prominent research topic in contemporary advanced functional materials science is the production of smart materials based on polymers that may independently adjust their physical and/or chemical characteristics when subjected to external stimuli. Smart hydrogels based on poly(N-isopropylacrylamide) (PNIPAM) demonstrate distinct thermoresponsive features close to a lower critical solution temperature (LCST) that enhance their capability in various biomedical applications such as drug delivery, tissue engineering, and wound dressings. Nevertheless, they have intrinsic shortcomings such as poor mechanical properties, limited loading capacity of actives, and poor biodegradability. Formulation of PNIPAM with diverse functional constituents to develop hydrogel composites is an efficient scheme to overcome these defects, which can significantly help for practicable application. This review reports on the latest developments in functional PNIPAM-based smart hydrogels for various biomedical applications. The first section describes the properties of PNIPAM-based hydrogels, followed by potential applications in diverse fields. Ultimately, this review summarizes the challenges and opportunities in this emerging area of research and development concerning this fascinating polymer-based system deep-rooted in chemistry and material science.
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Affiliation(s)
- Mohammad Javed Ansari
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
| | - Rahul R. Rajendran
- Department of Mechanical Engineering and Mechanics, Lehigh University, 19 Memorial Drive West, Bethlehem, PA 18015, USA;
| | - Sourav Mohanto
- Department of Pharmaceutics, Yenepoya Pharmacy College and Research Centre, Yenepoya (Deemed to be University), Mangalore 575018, Karnataka, India;
| | - Unnati Agarwal
- School of Bioengineering and Biosciences, Lovely Professional University, Jalandhar-Delhi, Grand Trunk Road, Phagwara 144001, Punjab, India;
| | - Kingshuk Panda
- Department of Applied Microbiology, Vellore Institute of Technology, School of Bioscience and Technology, Vellore 632014, Tamilnadu, India;
| | - Kishore Dhotre
- I.C.M.R.—National Institute of Virology, Pune 411021, Maharashtra, India;
| | - Ravi Manne
- Chemtex Environmental Lab, Quality Control and Assurance Department, 3082 25th Street, Port Arthur, TX 77642, USA;
| | - A. Deepak
- Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai 600124, Tamil Nadu, India;
| | - Ameeduzzafar Zafar
- Department of Pharmaceutics, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia; or
| | - Mohd Yasir
- Department of Pharmacy, College of Health Science, Arsi University, Asella 396, Ethiopia;
| | - Sheersha Pramanik
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
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3
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Milnes-Smith E, Stone CA, Willis CR, Perkin S. Surface Reconstruction of Fluoropolymers in Liquid Media. Langmuir 2022; 38:4657-4668. [PMID: 35395153 PMCID: PMC9097541 DOI: 10.1021/acs.langmuir.2c00198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 03/25/2022] [Indexed: 06/14/2023]
Abstract
Surface reconstruction is the rearrangement of atoms or molecules at an interface in response to a stimulus, driven by lowering the overall free energy of the system. Perfluoroalkyl acrylate polymers with short side chains undergo reconstruction at room temperature when exposed to water. Here, we use contact angle aging to examine the liquid- and temperature- dependency of surface reconstruction of plasma polymerized perfluoroalkyl acrylates. We use a first order kinetic model to examine the dynamics of reconstructive processes. Our results show that, above the bulk melting point of the polymers, the contact angles of both polar and nonpolar (hydrocarbon) liquids show a time dependency well fit by the model. We conclude that surface reconstruction can be driven by the preferential segregation of hydrocarbon and fluorocarbon moieties as well as by polar interactions. This has implications in terms of using fluorocarbons to design oleophobic surfaces (and vice versa) and in terms of designing fluorocarbon and/or hydrocarbon surfaces with switchable wettability.
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Affiliation(s)
- Eleanor Milnes-Smith
- Department
of Chemistry, Physical and Theoretical Chemistry Laboratory, University of Oxford, Oxford OX1 3QZ, United Kingdom
| | - Corinne A. Stone
- Defence
Science and Technology Laboratory, Porton Down, Salisbury,
Wiltshire SP4 0JQ, United
Kingdom
| | - Colin R. Willis
- Defence
Science and Technology Laboratory, Porton Down, Salisbury,
Wiltshire SP4 0JQ, United
Kingdom
| | - Susan Perkin
- Department
of Chemistry, Physical and Theoretical Chemistry Laboratory, University of Oxford, Oxford OX1 3QZ, United Kingdom
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4
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Gleason KK. Controlled Release Utilizing Initiated Chemical Vapor Deposited (iCVD) of Polymeric Nanolayers. Front Bioeng Biotechnol 2021; 9:632753. [PMID: 33634089 PMCID: PMC7902001 DOI: 10.3389/fbioe.2021.632753] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 01/05/2021] [Indexed: 11/29/2022] Open
Abstract
This review will focus on the controlled release of pharmaceuticals and other organic molecules utilizing polymeric nanolayers grown by initiated chemical vapor deposited (iCVD). The iCVD layers are able conform to the geometry of the underlying substrate, facilitating release from one- and two-dimensional nanostructures with high surface area. The reactors for iCVD film growth can be customized for specific substrate geometries and scaled to large overall dimensions. The absence of surface tension in vapor deposition processes allows the synthesis of pinhole-free layers, even for iCVD layers <10 nm thick. Such ultrathin layers also provide rapid transport of the drug across the polymeric layer. The mild conditions of the iCVD process avoid damage to the drug which is being encapsulated. Smart release is enabled by iCVD hydrogels which are responsive to pH, temperature, or light. Biodegradable iCVD layers have also be demonstrated for drug release.
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Affiliation(s)
- Karen K Gleason
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, United States
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5
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Schröder S, Hinz AM, Strunskus T, Faupel F. Molecular Insight into Real-Time Reaction Kinetics of Free Radical Polymerization from the Vapor Phase by In-Situ Mass Spectrometry. J Phys Chem A 2021; 125:1661-1667. [PMID: 33577326 DOI: 10.1021/acs.jpca.0c11180] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The combination of organic chemistry and chemical vapor deposition enables a unique way to deposit conformal, high quality polymer thin films from the vapor phase. Particularly initiated chemical vapor deposition (iCVD) has recently shown its great potential in many different application fields. With the ever-increasing demands on the process, the need for additional process refinement is also growing. In this study the enhancement of the iCVD process by in-situ mass spectrometry is presented. The approach enables insight into real-time reaction kinetics during the deposition process as well as identification of reaction pathways. Furthermore, the composition of the gas phase can be precisely controlled and spontaneously adjusted if necessary. Particularly the deposition of thin films with thicknesses in the low nanometer range and the deposition of copolymers can benefit from this approach. The presented approach enables enhanced process control as well as the ability to perform extensive kinetic studies.
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Affiliation(s)
- Stefan Schröder
- Chair for Multicomponent Materials, Institute for Materials Science, Kiel University, 24143 Kiel, Germany
| | - Alexander M Hinz
- Chair for Multicomponent Materials, Institute for Materials Science, Kiel University, 24143 Kiel, Germany
| | - Thomas Strunskus
- Chair for Multicomponent Materials, Institute for Materials Science, Kiel University, 24143 Kiel, Germany
| | - Franz Faupel
- Chair for Multicomponent Materials, Institute for Materials Science, Kiel University, 24143 Kiel, Germany
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6
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Tan Y, Liu Y, Liu Y, Ma R, Luo J, Hong H, Chen X, Wang S, Liu C, Zhang Y, Chen T. Rational Design of Thermosensitive Hydrogel to Deliver Nanocrystals with Intranasal Administration for Brain Targeting in Parkinson's Disease. Research (Wash D C) 2021; 2021:9812523. [PMID: 34888525 PMCID: PMC8627567 DOI: 10.34133/2021/9812523] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 10/18/2021] [Indexed: 04/23/2023]
Abstract
Mitochondrial dysfunction is commonly detected in individuals suffering from Parkinson's disease (PD), presenting within the form of excessive reactive oxygen species (ROS) generation as well as energy metabolism. Overcoming this dysfunction within brain tissues is an effective approach to treat PD, while unluckily, the blood-brain barrier (BBB) substantially impedes intracerebral drug delivery. In an effort to improve the delivery of efficacious therapeutic drugs to the brain, a drug delivery platform hydrogel (MAG-NCs@Gel) was designed by complexing magnolol (MAG)-nanocrystals (MAG-NCs) into the noninvasive thermosensitive poly(N-isopropylacrylamide) (PNIPAM) with self-gelation. The as-prepared MAG-NCs@Gel exhibited obvious improvements in drug solubility, the duration of residence with the nasal cavity, and the efficiency of brain targeting, respectively. Above all, continuous intranasal MAG-NCs@Gel delivery enabled MAG to cross the BBB and enter dopaminergic neurons, thereby effectively alleviating the symptoms of MPTP-induced PD. Taking advantage of the lower critical solution temperature (LCST) behavior of this delivery platform increases its viscoelasticity in nasal cavity, thus improving the efficiency of MAG-NCs transit across the BBB. As such, MAG-NCs@Gel represented an effective delivery platform capable of normalizing ROS and adenosine triphosphate (ATP) in the mitochondria of dopaminergic neurons, consequently reversing the mitochondrial dysfunction and enhancing the behavioral skills of PD mice without adversely affecting normal tissues.
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Affiliation(s)
- Yun Tan
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Yao Liu
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Yujing Liu
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Rui Ma
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Jingshan Luo
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Huijie Hong
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China
| | - Xiaojia Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China
| | - Shengpeng Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China
| | - Chuntai Liu
- Key Laboratory of Materials Processing and Mold, Ministry of Education, Zhengzhou University, Zhengzhou 450002, China
| | - Yi Zhang
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Tongkai Chen
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
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7
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Abstract
Waterborne diarrheal diseases such as travelers' diarrhea and cholera remain a threat to public health in many countries. Rapid diagnosis of an infectious disease is critical in preventing the escalation of a disease outbreak into an epidemic. Many of the diagnostic tools for infectious diseases employed today are time-consuming and require specialized laboratory settings and trained personnel. There is hence a pressing need for fit-for-purpose point-of-care diagnostic tools with emphasis in sensitivity, specificity, portability, and low cost. We report work toward thermally reversible biosensors for detection of the carbohydrate-binding domain of the Escherichia coli heat-labile enterotoxin (LTB), a toxin produced by enterotoxigenic E. coli strains, which causes travelers' diarrhea. The biosensing platform is a hybrid of two materials, combining the optical properties of porous silicon (pSi) interferometric transducers and a thermoresponsive multivalent glycopolymer, to enable recognition of LTB. Analytical performance of our biosensors allows us to detect, using a label-free format, sub-micromolar concentrations of LTB in solution as low as 0.135 μM. Furthermore, our platform shows a temperature-mediated "catch-and-release" behavior, an exciting feature with potential for selective protein capture, multiple readouts, and regeneration of the sensor over consecutive cycles of use.
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Affiliation(s)
- E Eduardo Antunez
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia.,Melbourne Centre for Nanofabrication, Victorian Node of the Australian National Fabrication Facility, Clayton, Victoria 3168, Australia
| | - Clare S Mahon
- Department of Chemistry, Durham University, Durham DH1 3LE, U.K
| | - Ziqiu Tong
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Nicolas H Voelcker
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia.,Melbourne Centre for Nanofabrication, Victorian Node of the Australian National Fabrication Facility, Clayton, Victoria 3168, Australia
| | - Markus Müllner
- Key Centre for Polymers and Colloids, School of Chemistry, The University of Sydney, Sydney 2006, New South Wales, Australia.,The University of Sydney Nano Institute (Sydney Nano), Sydney 2006, New South Wales, Australia
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8
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Ezzati N, Mahjoub AR, Shokrollahi S, Amiri A, Abolhosseini Shahrnoy A. Novel Biocompatible Amino Acids-Functionalized Three-dimensional Graphene Foams: As the Attractive and Promising Cisplatin Carriers for Sustained Release Goals. Int J Pharm 2020; 589:119857. [PMID: 32898631 DOI: 10.1016/j.ijpharm.2020.119857] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 09/01/2020] [Accepted: 09/02/2020] [Indexed: 12/13/2022]
Abstract
Application of amino acids-immobilized porous materials for drug delivery studies has been attracted a lot of attention in the recent years. In this study, amino acids-grafted graphene foams were prepared by anchoring of Alanine (Ala), Cysteine (Cys) and Glycine (Gly) amino acids on the surface of graphene oxide (GO) nanostructures and used as the novel biocompatible carriers to control releasing of the cisplatin as the cytotoxic anticancer drug. The characterization of prepared compounds was done by the FT-IR, Raman, TGA, N2 adsorption-desorption isotherms, SEM, and TEM techniques. Adsorption and in vitro release behavior of amino acids-functionalized foams were studied using ICP standard method. The results show that the drug loading amount and the drug releasing rate are significantly enhanced upon functionalization process. The Ala-Foam sample with the larger surface area and pore volume showed a higher loading content (4.53%) than other samples. In addition, the MTT test on the two MCF-7 and HepG2 human cancer cell lines exhibited an acceptable biocompatibility and sustainable drug releasing from the carriers up to 48 h, leading to the dosage frequency decrease and the patient compliance improvement.
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Affiliation(s)
- Nasim Ezzati
- Department of Chemistry, Faculty of Science, Tarbiat Modares University, P.O. Box. 14155-4383, Tehran, Iran.
| | - Ali Reza Mahjoub
- Department of Chemistry, Faculty of Science, Tarbiat Modares University, P.O. Box. 14155-4383, Tehran, Iran.
| | - Sudabeh Shokrollahi
- Department of Chemistry, College of Science, University of Tehran, Tehran 14155-6455, Iran.
| | - Ahmad Amiri
- Department of Chemistry, College of Science, University of Tehran, Tehran 14155-6455, Iran.
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9
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Zhang DX, Esser L, Vasani RB, Thissen H, Voelcker NH. Porous silicon nanomaterials: recent advances in surface engineering for controlled drug-delivery applications. Nanomedicine (Lond) 2020; 14:3213-3230. [PMID: 31855121 DOI: 10.2217/nnm-2019-0167] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Porous silicon (pSi) nanomaterials are increasingly attractive for biomedical applications due to their promising properties such as simple and feasible fabrication procedures, tunable morphology, versatile surface modification routes, biocompatibility and biodegradability. This review focuses on recent advances in surface modification of pSi for controlled drug delivery applications. A range of functionalization strategies and fabrication methods for pSi-polymer hybrids are summarized. Surface engineering solutions such as stimuli-responsive polymer grafting, stealth coatings and active targeting modifications are highlighted as examples to demonstrate what can be achieved. Finally, the current status of engineered pSi nanomaterials for in vivo applications is reviewed and future prospects and challenges in drug-delivery applications are discussed.
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Affiliation(s)
- De-Xiang Zhang
- Drug Delivery, Disposition & Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, 3052, Australia.,Commonwealth Scientific & Industrial Research Organisation (CSIRO), Manufacturing, Clayton, Victoria, 3168, Australia
| | - Lars Esser
- Commonwealth Scientific & Industrial Research Organisation (CSIRO), Manufacturing, Clayton, Victoria, 3168, Australia
| | - Roshan B Vasani
- Drug Delivery, Disposition & Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, 3052, Australia
| | - Helmut Thissen
- Commonwealth Scientific & Industrial Research Organisation (CSIRO), Manufacturing, Clayton, Victoria, 3168, Australia
| | - Nicolas H Voelcker
- Drug Delivery, Disposition & Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, 3052, Australia.,Commonwealth Scientific & Industrial Research Organisation (CSIRO), Manufacturing, Clayton, Victoria, 3168, Australia.,Melbourne Centre for Nanofabrication, Victorian Node of Australian National Fabrication Facility, Clayton, Victoria, 3168, Australia
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10
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Decandia G, Palumbo F, Treglia A, Armenise V, Favia P, Baruzzi F, Unger K, Perrotta A, Coclite AM. Initiated Chemical Vapor Deposition of Crosslinked Organic Coatings for Controlling Gentamicin Delivery. Pharmaceutics 2020; 12:E213. [PMID: 32121608 PMCID: PMC7150873 DOI: 10.3390/pharmaceutics12030213] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 02/22/2020] [Accepted: 02/25/2020] [Indexed: 01/14/2023] Open
Abstract
A coating consisting of a copolymer of methacrylic acid and ethylene glycol dimethacrylate was deposited over a gentamicin film by initiated chemical vapor deposition with the aim of controlling the drug release. Gentamicin release in water was monitored by means of conductance measurements and of UV-vis Fluorescence Spectroscopy. The influence of the polymer chemical composition, specifically of its crosslinking density, has been investigated as a tool to control the swelling behavior of the initiated chemical vapor deposition (iCVD) coating in water, and therefore its ability to release the drug. Agar diffusion test and microbroth dilution assays against Staphylococcus aureus and Pseudomonas aeruginosa on cellulose coated substrates confirmed that the antibacterial activity of the drug released by the coating was retained, though the release of gentamicin was not complete.
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Affiliation(s)
- Gianfranco Decandia
- Department of Chemistry, University of Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy; (G.D.); (A.T.); (V.A.); (P.F.)
| | - Fabio Palumbo
- Institute of Nanotechnology, National Research Council of Italy, c/o Department of Chemistry, University of Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy
| | - Annalisa Treglia
- Department of Chemistry, University of Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy; (G.D.); (A.T.); (V.A.); (P.F.)
| | - Vincenza Armenise
- Department of Chemistry, University of Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy; (G.D.); (A.T.); (V.A.); (P.F.)
| | - Pietro Favia
- Department of Chemistry, University of Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy; (G.D.); (A.T.); (V.A.); (P.F.)
- Institute of Nanotechnology, National Research Council of Italy, c/o Department of Chemistry, University of Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy
| | - Federico Baruzzi
- Institute of Sciences of Food Production, National Research Council of Italy, Via G. Amendola 122/O, 70126 Bari, Italy;
| | - Katrin Unger
- Institute of Solid State Physics, NAWI Graz, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria; (K.U.); (A.P.); (A.M.C.)
| | - Alberto Perrotta
- Institute of Solid State Physics, NAWI Graz, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria; (K.U.); (A.P.); (A.M.C.)
| | - Anna Maria Coclite
- Institute of Solid State Physics, NAWI Graz, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria; (K.U.); (A.P.); (A.M.C.)
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11
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Zhan X, Nie X, Gao F, Zhang C, You YZ, Yu Y. An NIR-activated polymeric nanoplatform with ROS- and temperature-sensitivity for combined photothermal therapy and chemotherapy of pancreatic cancer. Biomater Sci 2020; 8:5931-5940. [DOI: 10.1039/d0bm01324b] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A functional nanoplatform with ROS- and temperature-sensitivity was reported to achieve combined cancer treatment under NIR stimulation.
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Affiliation(s)
- Xiang Zhan
- AnHui Provincial Hospital
- Cheeloo College of Medicine
- Shandong University
- Jinan
- China
| | - Xuan Nie
- Hefei National Laboratory for Physical Sciences at the Microscale
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei 230026
| | - Fan Gao
- Hefei National Laboratory for Physical Sciences at the Microscale
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei 230026
| | - Cong Zhang
- Department of Gastroenterology
- AnHui Provincial Hospital
- Division of Life Sciences and Medicine
- University of Science and Technology of China
- Hefei
| | - Ye-Zi You
- Hefei National Laboratory for Physical Sciences at the Microscale
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei 230026
| | - Yue Yu
- AnHui Provincial Hospital
- Cheeloo College of Medicine
- Shandong University
- Jinan
- China
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12
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Abstract
This feature article provides an overview of different kinds of futuristic biomaterials which have the potential to be used for fluorescent imaging and drug delivery, often simultaneously. The synthesis route or preparation process, fluorescence property, release profile, biocompatibility, bioimaging, and mechanistic approaches are vividly discussed. These include bioimaging with fluorescently doped quantum dots, mesoporous silica, noble metals, metal clusters, hydrophilic/hydrophobic polymers, semiconducting polymer dots, carbon/graphene dots, dendrimers, fluorescent proteins, and other nanobiomaterials. Another section discusses the controlled and targeted drug, gene, or biologically active material delivery using various vehicles such as micelles, 2D nanomaterials, organic nanoparticles, polymeric nanohybrids, and chemically modified polymers. In the last section, we discuss biomaterials, which can deliver biologically active molecules, and imaging the cell/tissue.
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Affiliation(s)
- Arpan Biswas
- School of Materials Science and Technology , Indian Institute of Technology (Banaras Hindu University) , Varanasi 221 005 , India
| | - Aparna Shukla
- School of Materials Science and Technology , Indian Institute of Technology (Banaras Hindu University) , Varanasi 221 005 , India
| | - Pralay Maiti
- School of Materials Science and Technology , Indian Institute of Technology (Banaras Hindu University) , Varanasi 221 005 , India
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13
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Hu W, Bai X, Wang Y, Lei Z, Luo H, Tong Z. Upper critical solution temperature polymer-grafted hollow mesoporous silica nanoparticles for near-infrared-irradiated drug release. J Mater Chem B 2019; 7:5789-5796. [PMID: 31483429 DOI: 10.1039/c9tb01071h] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Near-infrared (NIR) irradiation responsive drug delivery systems have many advantages, which have attracted extensive interest from researchers. In this study, a NIR-triggered drug release system was established by grafting upper critical solution temperature (UCST) polymers on the surface of hollow mesoporous silica nanoparticles (HMSNs) followed by treatment with the photothermal conversion agent indocyanine green (ICG). The as-prepared UCST polymers showed the clearing temperature of 45 °C, which were advantageous to serve as gatekeepers in the physiological environment (37 °C). Under NIR irradiation, the temperature of the solution was elevated above the clearing point due to the presence of ICG; consequently, the collapsed UCST polymer chains became more hydrophilic; this resulted in the exposure of the mesoporous channels of the HMSNs and achievement of a burst drug release. Moreover, this NIR-responsive delivery system showed good biocompatibility and high anticancer efficiency towards the MCF-7 cancer cells upon exposure to NIR irradiation. In addition, a synergistic effect of thermal and chemo treatment has been achieved by the application of NIR irradiation since cancer cells are more vulnerable to high temperatures than normal cells.
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Affiliation(s)
- Wei Hu
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology (ATMT), Ministry of Education, Department of Polymer Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China. and Institute of Smart Fiber Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xiaowen Bai
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology (ATMT), Ministry of Education, Department of Polymer Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Yaping Wang
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology (ATMT), Ministry of Education, Department of Polymer Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China. and Institute of Smart Fiber Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Zhentao Lei
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology (ATMT), Ministry of Education, Department of Polymer Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China. and Institute of Smart Fiber Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Haipeng Luo
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology (ATMT), Ministry of Education, Department of Polymer Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China. and Institute of Smart Fiber Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Zaizai Tong
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology (ATMT), Ministry of Education, Department of Polymer Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China. and Institute of Smart Fiber Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China
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Werzer O, Tumphart S, Keimel R, Christian P, Coclite AM. Drug release from thin films encapsulated by a temperature-responsive hydrogel. Soft Matter 2019; 15:1853-1859. [PMID: 30698598 PMCID: PMC6390694 DOI: 10.1039/c8sm02529k] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Control over drug delivery may be interestingly achieved by using temperature responsive encapsulants, which change their thickness and mesh size with temperature. The prototype N-isopropylacrylamide hydrogel cross-linked with di(ethylene glycol) divinyl ether p(NIPAAm-co-DEGDVE) swells at low temperature and collapses above the lower critical solution temperature (LCST), ∼29 °C in a buffer. It might be expected that drug release from such encapsulation is always favored below the LCST, due to the larger free volume present in the swollen polymer film. Recent results show contradicting behavior where some cases behave as expected and others release much less when the polymer layer is swollen. In this study, layers of the drugs phenytoin, clotrimazole and indomethacin were drop cast on glass and p(NIPAAM-co-DEGDVE) layers were then synthesized directly on top of these drug layers via initiated chemical vapor deposition (iCVD), a solvent-free and gentle polymerization technique. Dissolution experiments were then performed, in which the drug release through the hindrance of the hydrogel was measured at different pH values. The results show that not only the swelling but also the permeate (drug in this case)-polymer interaction plays an important role in the release.
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Affiliation(s)
- Oliver Werzer
- Institute of Pharmaceutical Sciences
, Department of Pharmaceutical Technology
, University of Graz
,
8010 Graz
, Austria
| | - Stephan Tumphart
- Institute for Solid State Physics
, NAWI Graz
, Graz University of Technology
,
8010 Graz
, Austria
.
| | - Roman Keimel
- Institute of Pharmaceutical Sciences
, Department of Pharmaceutical Technology
, University of Graz
,
8010 Graz
, Austria
| | - Paul Christian
- Institute for Solid State Physics
, NAWI Graz
, Graz University of Technology
,
8010 Graz
, Austria
.
| | - Anna Maria Coclite
- Institute for Solid State Physics
, NAWI Graz
, Graz University of Technology
,
8010 Graz
, Austria
.
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15
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Zhang DX, Yoshikawa C, Welch NG, Pasic P, Thissen H, Voelcker NH. Spatially Controlled Surface Modification of Porous Silicon for Sustained Drug Delivery Applications. Sci Rep 2019; 9:1367. [PMID: 30718670 DOI: 10.1038/s41598-018-37750-w] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 12/06/2018] [Indexed: 11/24/2022] Open
Abstract
A new and facile approach to selectively functionalize the internal and external surfaces of porous silicon (pSi) for drug delivery applications is reported. To provide a surface that is suitable for sustained drug release of the hydrophobic cancer chemotherapy drug camptothecin (CPT), the internal surfaces of pSi films were first modified with 1-dodecene. To further modify the external surface of the pSi samples, an interlayer was applied by silanization with (3-aminopropyl)triethoxysilane (APTES) following air plasma treatment. In addition, copolymers of N-(2-hydroxypropyl) acrylamide (HPAm) and N-benzophenone acrylamide (BPAm) were grafted onto the external pSi surfaces by spin-coating and UV crosslinking. Each modification step was verified using attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopy, water contact angle (WCA) measurements, X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). In order to confirm that the air plasma treatment and silanization step only occurred on the top surface of pSi samples, confocal microscopy was employed after fluorescein isothiocyanate (FITC) conjugation. Drug release studies carried out over 17 h in PBS demonstrated that the modified pSi reservoirs released CPT continuously, while showing excellent stability. Furthermore, protein adsorption and cell attachment studies demonstrated the ability of the graft polymer layer to reduce both significantly. In combination with the biocompatible pSi substrate material, the facile modification strategy described in this study provides access to new multifunctional drug delivery systems (DDS) for applications in cancer therapy.
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16
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Schultz HB, Vasani RB, Holmes AM, Roberts MS, Voelcker NH. Stimulus-Responsive Antibiotic Releasing Systems for the Treatment of Wound Infections. ACS Appl Bio Mater 2019; 2:704-716. [DOI: 10.1021/acsabm.8b00577] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hayley B. Schultz
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
- School of Pharmacy and Medical Sciences, University of South Australia Cancer Research Institute, University of South Australia, Adelaide, South Australia 5001, Australia
| | - Roshan B. Vasani
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Amy M. Holmes
- School of Pharmacy and Medical Sciences, University of South Australia Cancer Research Institute, University of South Australia, Adelaide, South Australia 5001, Australia
| | - Michael S. Roberts
- School of Pharmacy and Medical Sciences, University of South Australia Cancer Research Institute, University of South Australia, Adelaide, South Australia 5001, Australia
- Diamantina Institute and Translational Research Institute, The University of Queensland, Woolloongabba, Queensland 4102, Australia
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia Australia
- Basil Hetzel Institute for Translational Medical Research, The Queen Elizabeth Hospital, Adelaide, South Australia Australia
| | - Nicolas H. Voelcker
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
- Melbourne Centre for Nanofabrication, Victorian Node of the Australian National Fabrication Facility, 151 Wellington Road, Clayton, Victoria 3168, Australia
- Commonwealth Scientific and Industrial Research Organisation, Clayton, Victoria 3168, Australia
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17
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Shi X, Ye Y, Wang H, Liu F, Wang Z. Designing pH-Responsive Biodegradable Polymer Coatings for Controlled Drug Release via Vapor-Based Route. ACS Appl Mater Interfaces 2018; 10:38449-38458. [PMID: 30360069 DOI: 10.1021/acsami.8b14016] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We present the design of a novel pH-responsive drug release system that is achieved by solventless encapsulation of drugs within a microporous membrane using a thin capping layer of biodegradable poly(methacrylic anhydride) (PMAH) coating. The coating was synthesized via a mild vapor polymerization process, namely, initiated chemical vapor deposition, which allowed perfect retention of the anhydride groups during deposition. The synthesized polyanhydride underwent degradation upon exposure to aqueous buffers, resulting in soluble poly(methacrylic acid). The degradation behavior of PMAH is highly pH-dependent, and the degradation rate under pH 10 is 15 times faster than that under pH 1. The release profile of a model drug rifampicin clearly exhibited two stages: the initial stage when the coatings were being degraded but the drugs were well stored and the second stage when drugs were gradually exposed to the medium and released. The drug release also showed strong pH responsiveness where the duration of the initial stage under pH 1 was more than 7 and 3 times longer than that under pH 10 and 7.4, respectively, and the release rates at pH 7.4 and 10 were significantly faster than that at pH 1. The pH-dependent degradation of the encapsulant thus enabled good preservation of drugs under low-pH environment but high drug release efficiency under neutral and alkaline environment, suggesting potential applications in site-specific drug delivery systems.
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Affiliation(s)
- Xiao Shi
- Department of Materials Science and Engineering, Faculty of Materials Science and Chemical Engineering , Ningbo University , Ningbo 315211 , China
| | - Yumin Ye
- Department of Materials Science and Engineering, Faculty of Materials Science and Chemical Engineering , Ningbo University , Ningbo 315211 , China
- State Key Laboratory of Silicon Materials , Zhejiang University , Hangzhou 310027 , China
| | - Hui Wang
- Key Laboratory of Marine Materials and Related Technologies , Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences , Ningbo 315211 , China
| | - Fu Liu
- Key Laboratory of Marine Materials and Related Technologies , Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences , Ningbo 315211 , China
| | - Zhijie Wang
- Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices , Institute of Semiconductors, Chinese Academy of Sciences , Beijing 100083 , China
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18
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Christian P, Tumphart S, Ehmann HMA, Riegler H, Coclite AM, Werzer O. Controlling Indomethacin Release through Vapor-Phase Deposited Hydrogel Films by Adjusting the Cross-linker Density. Sci Rep 2018; 8:7134. [PMID: 29739950 DOI: 10.1038/s41598-018-24238-w] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 03/29/2018] [Indexed: 01/19/2023] Open
Abstract
Vapor-phase deposited polymer coatings are applied on thin indomethacin films to modify the drug release. Hydrogel-forming co-polymers of 2-hydroxyethyl methacrylate and ethylene glycol dimethacrylate were prepared directly on top of solution cast indomethacin thin films by initiated Chemical Vapor Deposition (iCVD). This technique allows for solvent-free processing under mild conditions, thus minimizing a potential impact on the pharmaceutical. The drug release behavior, among other properties, was evaluated for polymers of different compositions and at different temperatures. The data show that the release kinetics can be tuned by several orders of magnitude as the cross-linker fraction is varied in the polymer coating. While uncoated indomethacin films were fully released within an hour, polymer coatings showed gradual liberation over several hours to days. Additional insight is gained from evaluating the experimental dissolution data in the framework of diffusive transport. The results of this study show that the iCVD technique has some promises for pharmaceutical technology, potentially allowing for tailored release behavior also for other drug systems.
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19
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Lai Y, Thompson JR, Dasog M. Metallothermic Reduction of Silica Nanoparticles to Porous Silicon for Drug Delivery Using New and Existing Reductants. Chemistry 2018; 24:7913-7920. [PMID: 29569356 DOI: 10.1002/chem.201705818] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Indexed: 11/07/2022]
Abstract
In this study, the influence of metals (Mg, Al, and Ca) and reaction conditions (time, temperature, and metal grain size) on the metallothermic reduction of Stöber silica nanoparticles (NPs) to form porous Si has been explored. Mg metal was found to be an effective reducing agent even at temperatures below its melting point; however, it also induced a high degree of structural damage and morphology change. Al was effective in reducing silica NPs only at its melting point or above, but the resulting particles retained a higher degree of structural morphology as compared to those reduced using Mg. Ca was found to be ineffective in reducing silica. A new reductant, a mixture of 70 % Mg and 30 % Al, was found to induce the least amount of morphology change, and the reactions proceeded at a temperature (450 °C) lower than those required with Mg or Al individually. Furthermore, porous Si NPs obtained using Mg, Al, and the mixture of 70 % Mg and 30 % Al as reductants have been investigated as carriers for ibuprofen loading and release. Porous Si obtained from reductions with Mg and the Mg/Al mixture showed higher drug loading and a sustained drug release profile, whereas porous Si obtained from Al reduction had lower loading and showed a conventional release profile over 24 h.
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Affiliation(s)
- Yiqi Lai
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, Halifax, NS, Canada
| | - Jonathan R Thompson
- Division of Materials Science, California Institute of Technology, Pasadena, CA, 91125, USA
| | - Mita Dasog
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, Halifax, NS, Canada
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20
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Abstract
A multiple-stimuli-responsive polymer nanocarrier has been self-assembled for NIR/UV light- and pH-controlled cargo release.
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Affiliation(s)
- Qingwei Li
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Ziquan Cao
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Guojie Wang
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
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21
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22
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Petlin D, Tverdokhlebov S, Anissimov Y. Plasma treatment as an efficient tool for controlled drug release from polymeric materials: A review. J Control Release 2017; 266:57-74. [DOI: 10.1016/j.jconrel.2017.09.023] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 09/13/2017] [Accepted: 09/15/2017] [Indexed: 12/19/2022]
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23
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Foppoli AA, Maroni A, Cerea M, Zema L, Gazzaniga A. Dry coating of solid dosage forms: an overview of processes and applications. Drug Dev Ind Pharm 2017; 43:1919-1931. [DOI: 10.1080/03639045.2017.1355923] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Anastasia Anna Foppoli
- Dipartimento di Scienze Farmaceutiche, Sezione di Tecnologia e Legislazione Farmaceutiche ‘M.E. Sangalli’, Università degli Studi di Milano, Milano, Italy
| | - Alessandra Maroni
- Dipartimento di Scienze Farmaceutiche, Sezione di Tecnologia e Legislazione Farmaceutiche ‘M.E. Sangalli’, Università degli Studi di Milano, Milano, Italy
| | - Matteo Cerea
- Dipartimento di Scienze Farmaceutiche, Sezione di Tecnologia e Legislazione Farmaceutiche ‘M.E. Sangalli’, Università degli Studi di Milano, Milano, Italy
| | - Lucia Zema
- Dipartimento di Scienze Farmaceutiche, Sezione di Tecnologia e Legislazione Farmaceutiche ‘M.E. Sangalli’, Università degli Studi di Milano, Milano, Italy
| | - Andrea Gazzaniga
- Dipartimento di Scienze Farmaceutiche, Sezione di Tecnologia e Legislazione Farmaceutiche ‘M.E. Sangalli’, Università degli Studi di Milano, Milano, Italy
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24
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Gai M, Frueh J, Kudryavtseva VL, Yashchenok AM, Sukhorukov GB. Polylactic Acid Sealed Polyelectrolyte Multilayer Microchambers for Entrapment of Salts and Small Hydrophilic Molecules Precipitates. ACS Appl Mater Interfaces 2017; 9:16536-16545. [PMID: 28452456 DOI: 10.1021/acsami.7b03451] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Efficient depot systems for entrapment and storage of small water-soluble molecules are of high demand for wide variety of applications ranging from implant based drug delivery in medicine and catalysis in chemical processes to anticorrosive systems in industry where surface-mediated active component delivery is required on a time and site specific manner. This work reports the fabrication of individually sealed hollow-structured polyelectrolyte multilayer (PEM) microchamber arrays based on layer-by-layer self-assembly as scaffolds and microcontact printing. These PEM chambers are composed out of biocompatible polyelectrolytes and sealed by a monolayer of hydrophobic biocompatible and biodegradable polylactic acid (PLA). Coating the chambers with hydrophobic PLA allows for entrapment of a microair-bubble in each chamber that seals and hence drastically reduces the PEM permeability. PLA@PEM microchambers are proven to enable prolonged subaqueous storage of small hydrophilic salts and molecules such as crystalline NaCl, doxicycline, and fluorescent dye rhodamine B. The presented microchambers are able to entrap air bubbles and demonstrate a novel strategy for entrapment, storage, and protection of micropackaged water-soluble substances in precipitated form. These chambers allow triggered release as demonstrated by ultrasound responsiveness of the chambers. Low-frequency ultrasound exposure is utilized for microchamber opening and payload release.
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Affiliation(s)
- Meiyu Gai
- School of Engineering and Materials Science, Queen Mary University of London , Mile End, Eng, 215, London E1 4NS, United Kingdom
| | - Johannes Frueh
- State Key laboratory of Micro/Nano Technology Research Centre, Harbin Institute of Technology , Yikuang Street 2, Harbin 150080, China
| | - Valeriya L Kudryavtseva
- RASA Center in Tomsk, Department of Experimental Physics, National Research Tomsk Polytechnic University , Tomsk 634050, Russia
| | - Alexey M Yashchenok
- Remote Controlled Theranostic Systems Lab, Educational Research Institute of Nanostructures and Biosystem, Saratov State University , 83 Astrakhanskaya Street, Saratov 410012, Russia
| | - Gleb B Sukhorukov
- School of Engineering and Materials Science, Queen Mary University of London , Mile End, Eng, 215, London E1 4NS, United Kingdom
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25
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Wang M, Wang X, Moni P, Liu A, Kim DH, Jo WJ, Sojoudi H, Gleason KK. CVD Polymers for Devices and Device Fabrication. Adv Mater 2017; 29:1604606. [PMID: 28032923 PMCID: PMC7161753 DOI: 10.1002/adma.201604606] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 10/20/2016] [Indexed: 05/19/2023]
Abstract
Chemical vapor deposition (CVD) polymerization directly synthesizes organic thin films on a substrate from vapor phase reactants. Dielectric, semiconducting, electrically conducting, and ionically conducting CVD polymers have all been readily integrated into devices. The absence of solvent in the CVD process enables the growth of high-purity layers and avoids the potential of dewetting phenomena, which lead to pinhole defects. By limiting contaminants and defects, ultrathin (<10 nm) CVD polymeric device layers have been fabricated in multiple laboratories. The CVD method is particularly suitable for synthesizing insoluble conductive polymers, layers with high densities of organic functional groups, and robust crosslinked networks. Additionally, CVD polymers are prized for the ability to conformally cover rough surfaces, like those of paper and textile substrates, as well as the complex geometries of micro- and nanostructured devices. By employing low processing temperatures, CVD polymerization avoids damaging substrates and underlying device layers. This report discusses the mechanisms of the major CVD polymerization techniques and the recent progress of their applications in devices and device fabrication, with emphasis on initiated CVD (iCVD) and oxidative CVD (oCVD) polymerization.
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Affiliation(s)
- Minghui Wang
- Department of Chemical EngineeringMassachusetts Institute of Technology77 Massachusetts AvenueCambridgeMA02139USA
| | - Xiaoxue Wang
- Department of Chemical EngineeringMassachusetts Institute of Technology77 Massachusetts AvenueCambridgeMA02139USA
| | - Priya Moni
- Department of Chemical EngineeringMassachusetts Institute of Technology77 Massachusetts AvenueCambridgeMA02139USA
| | - Andong Liu
- Department of Chemical EngineeringMassachusetts Institute of Technology77 Massachusetts AvenueCambridgeMA02139USA
| | - Do Han Kim
- Department of Chemical EngineeringMassachusetts Institute of Technology77 Massachusetts AvenueCambridgeMA02139USA
| | - Won Jun Jo
- Department of Chemical EngineeringMassachusetts Institute of Technology77 Massachusetts AvenueCambridgeMA02139USA
| | - Hossein Sojoudi
- Department of Chemical EngineeringMassachusetts Institute of Technology77 Massachusetts AvenueCambridgeMA02139USA
- Department of MechanicalIndustrial & Manufacturing EngineeringThe University of ToledoToledoOhio43606USA
| | - Karen K. Gleason
- Department of Chemical EngineeringMassachusetts Institute of Technology77 Massachusetts AvenueCambridgeMA02139USA
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26
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Xue R, Zhang W, Sun P, Zada I, Guo C, Liu Q, Gu J, Su H, Zhang D. Angle-independent pH-sensitive composites with natural gyroid structure. Sci Rep 2017; 7:42207. [PMID: 28165044 PMCID: PMC5292694 DOI: 10.1038/srep42207] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 01/06/2017] [Indexed: 12/04/2022] Open
Abstract
pH sensor is an important and practical device with a wide application in environmental protection field and biomedical industries. An efficient way to enhance the practicability of intelligent polymer composed pH sensor is to subtilize the three-dimensional microstructure of the materials, adding measurable features to visualize the output signal. In this work, C. rubi wing scales were combined with pH-responsive smart polymer polymethylacrylic acid (PMAA) through polymerization to achieve a colour-tunable pH sensor with nature gyroid structure. Morphology and reflection characteristics of the novel composites, named G-PMAA, are carefully investigated and compared with the original biotemplate, C. rubi wing scales. The most remarkable property of G-PMAA is a single-value corresponding relationship between pH value and the reflection peak wavelength (λmax), with a colour distinction degree of 18 nm/pH, ensuring the accuracy and authenticity of the output. The pH sensor reported here is totally reversible, which is able to show the same results after several detection circles. Besides, G-PMAA is proved to be not influenced by the detection angle, which makes it a promising pH sensor with superb sensitivity, stability, and angle-independence.
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Affiliation(s)
- Ruiyang Xue
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China
| | - Wang Zhang
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China
| | - Peng Sun
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China
| | - Imran Zada
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China
| | - Cuiping Guo
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China
| | - Qinglei Liu
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China
| | - Jiajun Gu
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China
| | - Huilan Su
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China
| | - Di Zhang
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China
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27
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Yang Z, Ma H, Jin Z, Cao H, Lei L, Ma Y, Lei Z. BSA-coated fluorescent organic–inorganic hybrid silica nanoparticles: preparation and drug delivery. NEW J CHEM 2017. [DOI: 10.1039/c6nj03915d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A novel BSA-coated inorganic–organic hybrid nano-material with drug delivery ability under stimulation by temperature changes is reported.
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Affiliation(s)
- Zengming Yang
- Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education
- Northwest Normal University
- Lanzhou
- China
- Key Laboratory of Polymer Materials of Gansu Province
| | - Hengchang Ma
- Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education
- Northwest Normal University
- Lanzhou
- China
- Key Laboratory of Polymer Materials of Gansu Province
| | - Zijie Jin
- Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education
- Northwest Normal University
- Lanzhou
- China
- Key Laboratory of Polymer Materials of Gansu Province
| | - Haiying Cao
- Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education
- Northwest Normal University
- Lanzhou
- China
- Key Laboratory of Polymer Materials of Gansu Province
| | - Lei Lei
- Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education
- Northwest Normal University
- Lanzhou
- China
- Key Laboratory of Polymer Materials of Gansu Province
| | - Yucheng Ma
- Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education
- Northwest Normal University
- Lanzhou
- China
- Key Laboratory of Polymer Materials of Gansu Province
| | - Ziqiang Lei
- Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education
- Northwest Normal University
- Lanzhou
- China
- Key Laboratory of Polymer Materials of Gansu Province
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Karimi M, Zangabad PS, Ghasemi A, Amiri M, Bahrami M, Malekzad H, Asl HG, Mahdieh Z, Bozorgomid M, Ghasemi A, Boyuk MRRT, Hamblin MR. Temperature-Responsive Smart Nanocarriers for Delivery Of Therapeutic Agents: Applications and Recent Advances. ACS Appl Mater Interfaces 2016; 8:21107-33. [PMID: 27349465 PMCID: PMC5003094 DOI: 10.1021/acsami.6b00371] [Citation(s) in RCA: 219] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Smart drug delivery systems (DDSs) have attracted the attention of many scientists, as carriers that can be stimulated by changes in environmental parameters such as temperature, pH, light, electromagnetic fields, mechanical forces, etc. These smart nanocarriers can release their cargo on demand when their target is reached and the stimulus is applied. Using the techniques of nanotechnology, these nanocarriers can be tailored to be target-specific, and exhibit delayed or controlled release of drugs. Temperature-responsive nanocarriers are one of most important groups of smart nanoparticles (NPs) that have been investigated during the past decades. Temperature can either act as an external stimulus when heat is applied from the outside, or can be internal when pathological lesions have a naturally elevated termperature. A low critical solution temperature (LCST) is a special feature of some polymeric materials, and most of the temperature-responsive nanocarriers have been designed based on this feature. In this review, we attempt to summarize recent efforts to prepare innovative temperature-responsive nanocarriers and discuss their novel applications.
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Affiliation(s)
- Mahdi Karimi
- Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
- Advanced Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran, Iran
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, Massachusetts 02114, United States
| | - Parham Sahandi Zangabad
- Research Center for Pharmaceutical Nanotechnology (RCPN), Tabriz University of Medical Science (TUOMS), Tabriz, Iran
- Department of Materials Science and Engineering, Sharif University of Technology, Azadi Avenue, 14588 Tehran, Iran
- Advanced Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran, Iran
| | - Alireza Ghasemi
- Department of Materials Science and Engineering, Sharif University of Technology, Azadi Avenue, 14588 Tehran, Iran
| | - Mohammad Amiri
- Department of Materials Science and Engineering, Sharif University of Technology, Azadi Avenue, 14588 Tehran, Iran
| | - Mohsen Bahrami
- Department of Materials Science and Engineering, Sharif University of Technology, Azadi Avenue, 14588 Tehran, Iran
| | - Hedieh Malekzad
- Advanced Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran, Iran
- Department of Chemistry, Kharazmi University of Tehran, Tehran, Iran
| | - Hadi Ghahramanzadeh Asl
- Department of Materials Science and Engineering, Sharif University of Technology, Azadi Avenue, 14588 Tehran, Iran
| | - Zahra Mahdieh
- Department of Biomedical and Pharmaceutical Sciences, Material Science and Engineering, University of Montana, Missoula, Montana 59812, United States
| | - Mahnaz Bozorgomid
- Department of Applied Chemistry, Central Branch of Islamic Azad University of Tehran, Tehran, Iran
| | - Amir Ghasemi
- Department of Materials Science and Engineering, Sharif University of Technology, Azadi Avenue, 14588 Tehran, Iran
- Advanced Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran, Iran
| | | | - Michael R. Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, Massachusetts 02114, United States
- Department of Dermatology, Harvard Medical School, Boston, Massachusetts 02115, United States
- Harvard-MIT Division of Health Sciences and Technology, Cambridge, Massachusetts 02139, United States
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Christian P, Ehmann H, Coclite AM, Werzer O. Polymer Encapsulation of an Amorphous Pharmaceutical by initiated Chemical Vapor Deposition for Enhanced Stability. ACS Appl Mater Interfaces 2016; 8:21177-84. [PMID: 27467099 PMCID: PMC4999961 DOI: 10.1021/acsami.6b06015] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 07/28/2016] [Indexed: 05/22/2023]
Abstract
The usage of amorphous solids in practical applications, such as in medication, is commonly limited by the poor long-term stability of this state, because unwanted crystalline transitions occur. In this study, three different polymeric coatings are investigated for their ability to stabilize amorphous films of the model drug clotrimazole and to protect against thermally induced transitions. For this, drop cast films of clotrimazole are encapsulated by initiated chemical vapor deposition (iCVD), using perfluorodecyl acrylate (PFDA), hydroxyethyl methacrylate (HEMA), and methacrylic acid (MAA). The iCVD technique operates under solvent-free conditions at low temperatures, thus leaving the solid state of the encapsulated layer unaffected. Optical microscopy and X-ray diffraction data reveal that at ambient conditions of about 22 °C, any of these iCVD layers extends the lifetime of the amorphous state significantly. At higher temperatures (50 or 70 °C), the p-PFDA coating is unable to provide protection, while the p-HEMA and p-MAA strongly reduce the crystallization rate. Furthermore, p-HEMA and p-MAA selectively facilitate a preferential alignment of clotrimazole and, interestingly, even suppress crystallization upon a temporary, rapid temperature increase (3 °C/min, up to 150 °C). The results of this study demonstrate how a polymeric coating, synthesized directly on top of an amorphous phase, can act as a stabilizing agent against crystalline transitions, which makes this approach interesting for a variety of applications.
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Affiliation(s)
- Paul Christian
- Institute of Solid State Physics, NAWI Graz, Graz University of Technology, 8010 Graz, Austria
| | - Heike
M.A. Ehmann
- Institute of Pharmaceutical Science, Department of Pharmaceutical
Technology, University of Graz, 8010 Graz, Austria
| | - Anna Maria Coclite
- Institute of Solid State Physics, NAWI Graz, Graz University of Technology, 8010 Graz, Austria
| | - Oliver Werzer
- Institute of Pharmaceutical Science, Department of Pharmaceutical
Technology, University of Graz, 8010 Graz, Austria
- E-mail:
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McInnes SJP, Michl TD, Delalat B, Al-Bataineh SA, Coad BR, Vasilev K, Griesser HJ, Voelcker NH. "Thunderstruck": Plasma-Polymer-Coated Porous Silicon Microparticles As a Controlled Drug Delivery System. ACS Appl Mater Interfaces 2016; 8:4467-4476. [PMID: 26836366 DOI: 10.1021/acsami.5b12433] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Controlling the release kinetics from a drug carrier is crucial to maintain a drug's therapeutic window. We report the use of biodegradable porous silicon microparticles (pSi MPs) loaded with the anticancer drug camphothecin, followed by a plasma polymer overcoating using a loudspeaker plasma reactor. Homogenous "Teflon-like" coatings were achieved by tumbling the particles by playing AC/DC's song "Thunderstruck". The overcoating resulted in a markedly slower release of the cytotoxic drug, and this effect correlated positively with the plasma polymer coating times, ranging from 2-fold up to more than 100-fold. Ultimately, upon characterizing and verifying pSi MP production, loading, and coating with analytical methods such as time-of-flight secondary ion mass spectrometry, scanning electron microscopy, thermal gravimetry, water contact angle measurements, and fluorescence microscopy, human neuroblastoma cells were challenged with pSi MPs in an in vitro assay, revealing a significant time delay in cell death onset.
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Affiliation(s)
- Steven J P McInnes
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Future Industries Institute, University of South Australia , Adelaide, South Australia 5001, Australia
| | - Thomas D Michl
- Future Industries Institute, University of South Australia , Mawson Lakes, South Australia 5095, Australia
| | - Bahman Delalat
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Future Industries Institute, University of South Australia , Adelaide, South Australia 5001, Australia
| | - Sameer A Al-Bataineh
- Future Industries Institute, University of South Australia , Mawson Lakes, South Australia 5095, Australia
| | - Bryan R Coad
- Future Industries Institute, University of South Australia , Mawson Lakes, South Australia 5095, Australia
| | - Krasimir Vasilev
- Future Industries Institute, University of South Australia , Mawson Lakes, South Australia 5095, Australia
| | - Hans J Griesser
- Future Industries Institute, University of South Australia , Mawson Lakes, South Australia 5095, Australia
| | - Nicolas H Voelcker
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Future Industries Institute, University of South Australia , Adelaide, South Australia 5001, Australia
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