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Shin Y, Schwartz JM, Engler AC, Jones B, Davydovich O, Kohl PA. Photoactivated Cyclic Polyphthalaldehyde Microcapsules for Payload Delivery. ACS APPLIED MATERIALS & INTERFACES 2024; 16:43951-43960. [PMID: 39112427 PMCID: PMC11345721 DOI: 10.1021/acsami.4c07609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 07/26/2024] [Accepted: 08/02/2024] [Indexed: 08/23/2024]
Abstract
Microcapsules with a cyclic polyphthalaldehyde (cPPA) shell and oil core were fabricated by an emulsification process. The low ceiling temperature cPPA shell was made phototriggerable by incorporating a photoacid generator (PAG). Photoactivation of the PAG created a strong acid which catalyzed cPPA depolymerization, resulting in the release of the core payload, as quantified by 1H NMR. The high molecular weight cPPA (197 kDa) yielded uniform spherical microcapsules. The core diameter was 24.8 times greater than the cPPA shell thickness (2.4 to 21.6 μm). Nonionic bis(cyclohexylsulfonyl)diazomethane (BCSD) and N-hydroxynaphthalimide triflate (HNT) PAGs were used as the PAG in the microcapsule shells. BCSD required dual stimuli of UV radiation and post-exposure baking at 60 °C to activate cPPA depolymerization while room temperature irradiation of HNT resulted in instantaneous core release. A 300 s UV exposure (365 nm, 10.8 J/cm2) of the cPPA/HNT microcapsules resulted in 66.5 ± 9.4% core release. Faster core release was achieved by replacing cPPA with a phthalaldehyde/propanal copolymer. A 30 s UV exposure (365 nm, 1.08 J/cm2) resulted in 82 ± 13% core release for the 75 mol % phthalaldehyde/25 mol % propanal copolymer microcapsules. The photoresponsive shell provides a versatile polymer microcapsule technology for on-demand, controlled release of hydrophobic core payloads.
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Affiliation(s)
- Youngsu Shin
- School
of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Jared M. Schwartz
- School
of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Anthony C. Engler
- Cain
Department of Chemical Engineering, Louisiana
State University, Baton
Rouge, Louisiana 70803, United States
| | - Brad Jones
- Sandia
National Laboratories, Albuquerque, New Mexico 87185, United States
| | - Oleg Davydovich
- Sandia
National Laboratories, Albuquerque, New Mexico 87185, United States
| | - Paul A. Kohl
- School
of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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2
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Brito J, Shah PP, Aliakseyeu A, Sukhishvili SA. Effect of polyacid architecture and polycation molecular weight on lateral diffusion within multilayer films. J Chem Phys 2024; 160:121101. [PMID: 38530006 DOI: 10.1063/5.0190377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 03/12/2024] [Indexed: 03/27/2024] Open
Abstract
Despite the potential use of polyelectrolyte multilayers for biomedical, separation, and energy applications, their dynamic properties are not sufficiently understood. In this work, center-of-mass diffusion of a weak polyacid-poly(methacrylic acid) (PMAA) of linear and 8-arm architecture (L-PMAA and 8-PMAA, respectively) and matched molecular weight-was studied in layer-by-layer (LbL) assemblies with poly(diallyldimethylammonium) chloride (PDADMAC) of varied molecular weight. The film deposition at low-salt, acidic conditions when PMAA was only partially ionized yielded thicker, more diffused layers with shorter PDADMAC chains, and bilayer thickness decreased for multilayers constructed with longer PDADMAC. The molecular architecture of PMAA had a weak effect on film growth, with bilayer thickness being ∼20% larger for L-PMAA for the films constructed with the shortest PDADMAC (35 kDa) and identical film growth for L-PMAA and 8-PMAA with the longest PDADMAC (300 kDa). The exposure of the multilayer films to 0.2M NaCl triggered a reduction in PMAA ionization and significant lateral diffusivity of fluorescently labeled PMAA molecules (PMAA*), with diffusion coefficients D ranging from 10-13 to 10-12 cm2/s, as determined by the fluorescence recovery after photobleaching technique. For all the films, polymer mobility was higher for star polyacids as compared to their linear counterparts, and the dependence of PMAA diffusion coefficient D on PDADMAC molecular weight (D ∼ M-n) was relatively weak (n < 0.6). However, 8-PMAA demonstrated an approximately doubled power exponent compared to the L-PMAA chains, suggesting a stronger effect of the molecular connectivity of the partner polycation molecules on the diffusion of star polyelectrolytes.
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Affiliation(s)
- Jordan Brito
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77840, USA
| | - Parin Purvin Shah
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77840, USA
| | - Aliaksei Aliakseyeu
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77840, USA
| | - Svetlana A Sukhishvili
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77840, USA
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Absalan F, Seyed Sadjadi M, Farhadyar N, Hossaini Sadr M. Bone Tissue Engineering of HA/COL/GO Porous Nanocomposites with the Ability to Release Naproxen: Synthesis, Characterization, and In Vitro Study. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02283-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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4
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Serra VV, Serra SG, Vallejo MCS, Paulo PMR, Moura NMM, Botequim D, Neves MGPMS, Costa SMB. Merging Porphyrins with Gold Nanorods: Self Assembly Construct to High Fluorescent Polyelectrolyte Microcapsules. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:872. [PMID: 35269360 PMCID: PMC8912806 DOI: 10.3390/nano12050872] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 02/21/2022] [Accepted: 02/26/2022] [Indexed: 02/04/2023]
Abstract
Dual probe porphyrin-gold nanorod polyelectrolyte microcapsules were developed to explore the enhancing effects of a plasmonic interface of self-assembled gold nanoparticles in the fluorescence emission from porphyrins loaded into the capsules' core. An analysis of fluorescence lifetime imaging microscopy (FLIM) data reports a notable 105-106-fold increase in the maximum detected photon rates from diffraction-limited spots and an overall six-fold increase in fluorescence as averaged over the whole microcapsule area. Large emission enhancements were correlated with decreases in fluorescence lifetimes. The microcapsule's design proved effective in achieving high fluorescent hybrids and may shed light on new possibilities for advanced materials imaging applications.
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Affiliation(s)
- Vanda Vaz Serra
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (S.G.S.); (D.B.); (S.M.B.C.)
| | - Sofia G. Serra
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (S.G.S.); (D.B.); (S.M.B.C.)
| | - Mariana C. S. Vallejo
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal; (M.C.S.V.); (N.M.M.M.); (M.G.P.M.S.N.)
| | - Pedro M. R. Paulo
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (S.G.S.); (D.B.); (S.M.B.C.)
| | - Nuno M. M. Moura
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal; (M.C.S.V.); (N.M.M.M.); (M.G.P.M.S.N.)
| | - David Botequim
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (S.G.S.); (D.B.); (S.M.B.C.)
| | - Maria Graça P. M. S. Neves
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal; (M.C.S.V.); (N.M.M.M.); (M.G.P.M.S.N.)
| | - Sílvia M. B. Costa
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (S.G.S.); (D.B.); (S.M.B.C.)
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5
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Song H, Jiang C. Recent advances in targeted drug delivery for the treatment of pancreatic ductal adenocarcinoma. Expert Opin Drug Deliv 2022; 19:281-301. [PMID: 35220832 DOI: 10.1080/17425247.2022.2045943] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Pancreatic ductal adenocarcinoma (PDAC) has become a serious health problem with high impact worldwide. The heterogeneity of PDAC makes it difficult to apply drug delivery systems (DDS) used in other cancer models, for example, the poorly developed vascular system makes anti-angiogenic therapy ineffective. Due to its various malignant pathological changes, drug delivery against PDAC is a matter of urgent concern. Based on this situation, various drug delivery strategies specially designed for PDAC have been generated. AREAS COVERED This review will briefly describe how delivery systems can be designed through nanotechnology and formulation science. Most research focused on penetrating the stromal barrier, exploiting and alleviating the hypoxic microenvironment, targeting immune cells, or designing vaccines, and combination therapies. This review will summarize the ways to reverse the malignant pathological features of PDAC and hopefully provide ideas for subsequent studies. EXPERT OPINION Drug delivery systems designed to achieve penetrating functions or to alleviate hypoxia and activate immunity have achieved good therapeutic results in animal models in several studies. In future studies, there is a need to deliver PDAC therapeutics in a more precise manner, or the use of drug carriers for multiple functions simultaneously, are potential therapeutic strategy.
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Affiliation(s)
- Haolin Song
- Department of Pharmaceutics, Fudan University, Shanghai, Sichuan, 201203 China
| | - Chen Jiang
- Department of Pharmaceutics, Fudan University, Shanghai, Sichuan, 201203 China
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Al-Nemrawi N, Hameedat F, Al-Husein B, Nimrawi S. Photolytic Controlled Release Formulation of Methotrexate Loaded in Chitosan/TiO2 Nanoparticles for Breast Cancer. Pharmaceuticals (Basel) 2022; 15:ph15020149. [PMID: 35215259 PMCID: PMC8875436 DOI: 10.3390/ph15020149] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 01/16/2022] [Accepted: 01/21/2022] [Indexed: 01/27/2023] Open
Abstract
A new system composed of chitosan nanoparticles loaded with methotrexate (MTX-CS-NPs) and functionalized with photocatalytic TiO2 nanoparticles (TiO2-NPs) was prepared. This system is expected to initiate polymeric rupture of MTX-CS-NPs and subsequently release MTX, upon illumination with UV light. MTX-CS-NPs were prepared and characterized in terms of particle size, charge, polydispersity and drug release before and after coating with TiO2-NPs. The release of MTX in vitro was studied in dark, light and UV light. Finally, coated and uncoated MTX-CS-NPs were studied in vitro using MCF-7 cell line. The functionalized NPs were larger in size, more polydisperse and carried higher positive charges compared to the unfunctionalized NPs. The entrapment efficacy was high reaching 75% and was not affected by coating with MTX-CS-NPs. Further, less than 5% of methotrexate was released after 80 h from uncoated NPs and the release was not enhanced by UV illumination of the particles. In contrast, the release from functionalized NPs was enhanced, reaching 40% after 80 h, as the particles were stroked with UV light and as the amount of TiO2-NPs used in coating increased. Finally, coating the MTX-CS-NPs with TiO2-NPs significantly enhanced their cytotoxicity on MCF-7 cells. The coated MTX-CS-NPs recorded low cell viabilities compared to the other formulations. In conclusion, the drug release of MTX-CS-NPs could be triggered and controlled remotely by coating with TiO2-NPs, which maybe more effective in cancer treatment.
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Affiliation(s)
- Nusaiba Al-Nemrawi
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid 22110, Jordan;
- Correspondence:
| | - Fatima Hameedat
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid 22110, Jordan;
| | - Belal Al-Husein
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid 22110, Jordan;
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Yang T, Qin W, Zhang Q, Luo J, Lin D, Chen H. Essential-oil capsule preparation and its application in food preservation: A review. FOOD REVIEWS INTERNATIONAL 2022. [DOI: 10.1080/87559129.2021.2021934] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Tian Yang
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
| | - Wen Qin
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
| | - Qing Zhang
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
| | - Junyun Luo
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
| | - Derong Lin
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
| | - Hong Chen
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
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8
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Kazemi-Andalib F, Mohammadikish M, Divsalar A, Sahebi U. Hollow microcapsule with pH-sensitive chitosan/polymer shell for in vitro delivery of curcumin and gemcitabine. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2021.110887] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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9
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Vikulina AS, Campbell J. Biopolymer-Based Multilayer Capsules and Beads Made via Templating: Advantages, Hurdles and Perspectives. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2502. [PMID: 34684943 PMCID: PMC8537085 DOI: 10.3390/nano11102502] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 09/14/2021] [Accepted: 09/20/2021] [Indexed: 12/12/2022]
Abstract
One of the undeniable trends in modern bioengineering and nanotechnology is the use of various biomolecules, primarily of a polymeric nature, for the design and formulation of novel functional materials for controlled and targeted drug delivery, bioimaging and theranostics, tissue engineering, and other bioapplications. Biocompatibility, biodegradability, the possibility of replicating natural cellular microenvironments, and the minimal toxicity typical of biogenic polymers are features that have secured a growing interest in them as the building blocks for biomaterials of the fourth generation. Many recent studies showed the promise of the hard-templating approach for the fabrication of nano- and microparticles utilizing biopolymers. This review covers these studies, bringing together up-to-date knowledge on biopolymer-based multilayer capsules and beads, critically assessing the progress made in this field of research, and outlining the current challenges and perspectives of these architectures. According to the classification of the templates, the review sequentially considers biopolymer structures templated on non-porous particles, porous particles, and crystal drugs. Opportunities for the functionalization of biopolymer-based capsules to tailor them toward specific bioapplications is highlighted in a separate section.
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Affiliation(s)
- Anna S. Vikulina
- Department of Theory and Bio-Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg, 1, 14476 Potsdam, Germany
- Bavarian Polymer Institute, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Dr.-Mack-Straße, 77, 90762 Fürth, Germany
| | - Jack Campbell
- School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UK;
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Li H, Zhou R, He J, Zhang M, Liu J, Sun X, Ni P. Glucose-Sensitive Core-Cross-Linked Nanoparticles Constructed with Polyphosphoester Diblock Copolymer for Controlling Insulin Delivery. Bioconjug Chem 2021; 32:2095-2107. [PMID: 34469130 DOI: 10.1021/acs.bioconjchem.1c00390] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
This work aims to construct biocompatible, biodegradable core-cross-linked and insulin-loaded nanoparticles which are sensitive to glucose and release insulin via cleavage of the nanoparticles in a high-concentration blood glucose environment. First, a polyphosphoester-based diblock copolymer (PBYP-g-Gluc)-b-PEEP was prepared via ring-opening copolymerization (ROP) and the copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) in which PBYP and PEEP represent the polymer segments from 2-(but-3-yn-1-yloxy)-2-oxo-1,3,2-dioxaphospholane and 2-ethoxy-2-oxo-1,3,2-dioxaphospholane, respectively, and Gluc comes from 2-azidoethyl-β-d-glucopyranoside (Gluc-N3) that grafted with PBYP. The structure and molecular weight of the copolymer were characterized by 1H NMR, 31P NMR, GPC, FT-IR, and UV-vis measurements. The amphiphilic copolymer could self-assemble into core-shell uncore-cross-linked nanoparticles (UCCL NPs) in aqueous solutions and form core-cross-linked nanoparticles (CCL NPs) after adding cross-linking agent adipoylamidophenylboronic acid (AAPBA). Dynamic light scattering (DLS) and transmission electron microscopy (TEM) were used to study the self-assembly behavior of the two kinds of NPs and the effect of different Gluc group contents on the size of NPs further to verify the stability and glucose sensitivity of CCL NPs. The ability of NPs to load fluorescein isothiocyanate-labeled insulin (FITC-insulin) and their glucose-triggered release behavior were detected by a fluorescence spectrophotometer. The results of methyl thiazolyl tetrazolium (MTT) assay and hemolysis activity experiments showed that the CCL NPs had good biocompatibility. An in vivo hypoglycemic study has shown that FITC-insulin-loaded CCL NPs could reduce blood glucose and have a protective effect on hypoglycemia. This research provides a new method for constructing biodegradable and glucose-sensitive core-cross-linked nanomedicine carriers for controlled insulin release.
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Affiliation(s)
- Hongping Li
- College of Chemistry, Chemical Engineering and Materials Science, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Soochow University, Suzhou 215123, P. R. China
| | - Ru Zhou
- College of Chemistry, Chemical Engineering and Materials Science, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Soochow University, Suzhou 215123, P. R. China
| | - Jinlin He
- College of Chemistry, Chemical Engineering and Materials Science, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Soochow University, Suzhou 215123, P. R. China
| | - Mingzu Zhang
- College of Chemistry, Chemical Engineering and Materials Science, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Soochow University, Suzhou 215123, P. R. China
| | - Jian Liu
- Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou 215123, P. R. China
| | - Xingwei Sun
- Intervention Department, The Second Affiliated Hospital of Soochow University, Suzhou 215004, P. R. China
| | - Peihong Ni
- College of Chemistry, Chemical Engineering and Materials Science, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Soochow University, Suzhou 215123, P. R. China
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Zhang N, Jia C, Ma X, Li J, Wang S, Yue B, Huang M. Hierarchical Core-Shell Fe₃O₄@mSiO₂@Chitosan Nanoparticles for pH-Responsive Drug Delivery. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2021; 21:3020-3027. [PMID: 33653475 DOI: 10.1166/jnn.2021.19154] [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
Hierarchical nanoparticles are of great interest because they possess unique physicochemical properties and multiple functionalities, providing a wealth of possibilities for various applications. In this work, we have developed a well-designed method to prepare hierarchical magnetic nanoparticles Fe₃O₄@mSiO₂@CS by integrating a solvothermal method for synthesizing the Fe₃O₄ core, a dualtemplating micelle system for preparing a layer of mesoporous silica (mSiO₂) shell, and a silane coupling method via γ-glycidoxypropyltrimethoxysilane for binding a chitosan (CS) layer on the silica surface. The porous hierarchical nanoparticles were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), dynamic light scattering nanoparticle size analyzer, and specific surface area and pore size analyzer. The loading capacity and the release behavior of the as-prepared nanoparticles for doxorubicin hydrochloride were studied, and it was found that the drug release rate was faster at pH 6.0 than at pH 7.4, revealing the pH-responsive property of the nanoparticles.
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Affiliation(s)
- Ning Zhang
- Department of Chemistry, College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Chengzheng Jia
- Department of Chemistry, College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Xingyue Ma
- Department of Chemistry, College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Jinfeng Li
- Department of Chemistry, College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Shige Wang
- Department of Chemistry, College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Bingbing Yue
- Department of Chemistry, College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Mingxian Huang
- Department of Chemistry, College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China
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Sato K, Sato F, Kumano M, Kamijo T, Sato T, Zhou Y, Korchev Y, Fukuma T, Fujimura T, Takahashi Y. Electrochemical Quantitative Evaluation of the Surface Charge of a Poly(1‐Vinylimidazole) Multilayer Film and Application to Nanopore pH Sensor. ELECTROANAL 2021. [DOI: 10.1002/elan.202100041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Katsuhiko Sato
- Faculty of Pharmaceutical Science Tohoku Medical and Pharmaceutical University 4-4-1 Komatsushima, Aoba Sendai Miyagi 981-8558 Japan
- Department of Creative Engineering National Institute of Technology Tsuruoka College 104 Sawada, Inooka Tsuruoka Yamagata 997-8511 Japan
| | - Fumiya Sato
- Graduate School of Pharmaceutical Sciences Tohoku University 6-3 Aoba, Aramaki, Aoba-ku Sendai 980-8578 Japan
| | - Masayuki Kumano
- Graduate School of Pharmaceutical Sciences Tohoku University 6-3 Aoba, Aramaki, Aoba-ku Sendai 980-8578 Japan
| | - Toshio Kamijo
- Department of Creative Engineering National Institute of Technology Tsuruoka College 104 Sawada, Inooka Tsuruoka Yamagata 997-8511 Japan
| | - Takaya Sato
- Department of Creative Engineering National Institute of Technology Tsuruoka College 104 Sawada, Inooka Tsuruoka Yamagata 997-8511 Japan
| | - Yuanshu Zhou
- Nano Life Science Institute (WPI-NanoLSI) Kanazawa University, Kakuma-machi Kanazawa 920-1192 Japan
| | - Yuri Korchev
- Nano Life Science Institute (WPI-NanoLSI) Kanazawa University, Kakuma-machi Kanazawa 920-1192 Japan
- Imperial College London Department of Medicine W12 0NN London United Kingdom
| | - Takeshi Fukuma
- Nano Life Science Institute (WPI-NanoLSI) Kanazawa University, Kakuma-machi Kanazawa 920-1192 Japan
| | - Tsutomu Fujimura
- Faculty of Pharmaceutical Science Tohoku Medical and Pharmaceutical University 4-4-1 Komatsushima, Aoba Sendai Miyagi 981-8558 Japan
| | - Yasufumi Takahashi
- Nano Life Science Institute (WPI-NanoLSI) Kanazawa University, Kakuma-machi Kanazawa 920-1192 Japan
- Precursory Research for Embryonic Science and Technology (PRESTO) Japan Science and Technology Agency (JST) Saitama 332-0012 Japan
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14
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Campbell J, Abnett J, Kastania G, Volodkin D, Vikulina AS. Which Biopolymers Are Better for the Fabrication of Multilayer Capsules? A Comparative Study Using Vaterite CaCO 3 as Templates. ACS APPLIED MATERIALS & INTERFACES 2021; 13:3259-3269. [PMID: 33410679 PMCID: PMC7880531 DOI: 10.1021/acsami.0c21194] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The polymer layer-by-layer assembly is accounted among the most attractive approaches for the design of advanced drug delivery platforms and biomimetic materials in 2D and 3D. The multilayer capsules can be made of synthetic or biologically relevant (e.g., natural) polymers. The biopolymers are advantageous for bioapplications; however, the design of such "biocapsules" is more challengeable due to intrinsic complexity and lability of biopolymers. Until now, there are no systematic studies that report the formation mechanism for multilayer biocapsules templated upon CaCO3 crystals. This work evaluates the structure-property relationship for 16 types of capsules made of different biopolymers and proposes the capsule formation mechanism. The capsules have been fabricated upon mesoporous cores of vaterite CaCO3, which served as a sacrificial template. Stable capsules of polycations poly-l-lysine or protamine and four different polyanions were successfully formed. However, capsules made using the polycation collagen and dextran amine underwent dissolution. Formation of the capsules has been correlated with the stability of the respective polyelectrolyte complexes at increased ionic strength. All formed capsules shrink upon core dissolution and the degree of shrinkage increased in the series of polyanions: heparin sulfate < dextran sulfate < chondroitin sulfate < hyaluronic acid. The same trend is observed for capsule adhesiveness to the glass surface, which correlates with the decrease in polymer charge density. The biopolymer length and charge density govern the capsule stability and internal structure; all formed biocapsules are of a matrix-type, other words are microgels. These findings can be translated to other biopolymers to predict biocapsule properties.
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Affiliation(s)
- Jack Campbell
- Department
of Chemistry and Forensics, School of Science and Technology, Nottingham Trent University, Clifton Lane, NG11 8NS Nottingham, U.K.
| | - Jordan Abnett
- Department
of Chemistry and Forensics, School of Science and Technology, Nottingham Trent University, Clifton Lane, NG11 8NS Nottingham, U.K.
| | - Georgia Kastania
- Department
of Chemistry and Forensics, School of Science and Technology, Nottingham Trent University, Clifton Lane, NG11 8NS Nottingham, U.K.
| | - Dmitry Volodkin
- Department
of Chemistry and Forensics, School of Science and Technology, Nottingham Trent University, Clifton Lane, NG11 8NS Nottingham, U.K.
- . Phone: +44-115-848-3140
| | - Anna S. Vikulina
- Branch
Bioanalytics and Bioprocesses, Fraunhofer
Institute for Cell Therapy and Immunology, Am Mühlenberg 13-Golm, 14476 Potsdam, Germany
- . Phone: +49-331 58187-122
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15
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Eriksson V, Andersson Trojer M, Vavra S, Hulander M, Nordstierna L. Formulation of polyphthalaldehyde microcapsules for immediate UV-light triggered release. J Colloid Interface Sci 2020; 579:645-653. [DOI: 10.1016/j.jcis.2020.06.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 06/05/2020] [Accepted: 06/06/2020] [Indexed: 02/06/2023]
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16
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Voltammetric pH Measurements Using Azure A-Containing Layer-by-Layer Film Immobilized Electrodes. Polymers (Basel) 2020; 12:polym12102328. [PMID: 33053708 PMCID: PMC7599638 DOI: 10.3390/polym12102328] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 10/02/2020] [Accepted: 10/07/2020] [Indexed: 01/05/2023] Open
Abstract
pH is one of the most important properties associated with an aqueous solution and various pH measurement techniques are available. In this study, Azure A-modified poly(methacrylic acid) (AA-PMA) was synthesized used to prepare a layer-by-layer deposited film with poly(allylamine hydrochloride) (PAH) on a glassy carbon electrode via electrostatic interactions and the multilayer film-immobilized electrode was used to measure pH. Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) measurement were performed. Consequently, the oxidation potential of AA on the electrode changed with pH. As per Nernst's equation, because H+ ions are involved in the redox reaction, the peak potential shifted depending on the pH of the solution. The peak potential shifts are easier to detect by DPV than CV measurement. Accordingly, using electrochemical responses, the pH was successfully measured in the pH range of 3 to 9, and the electrodes were usable for 50 repeated measurements. Moreover, these electrochemical responses were not affected by interfering substances.
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17
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Colloids-at-surfaces: Physicochemical approaches for facilitating cell adhesion on hybrid hydrogels. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125185] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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18
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Otto DP, de Villiers MM. Layer-By-Layer Nanocoating of Antiviral Polysaccharides on Surfaces to Prevent Coronavirus Infections. Molecules 2020; 25:E3415. [PMID: 32731428 PMCID: PMC7435837 DOI: 10.3390/molecules25153415] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 07/24/2020] [Accepted: 07/26/2020] [Indexed: 12/28/2022] Open
Abstract
In 2020, the world is being ravaged by the coronavirus, SARS-CoV-2, which causes a severe respiratory disease, Covid-19. Hundreds of thousands of people have succumbed to the disease. Efforts at curing the disease are aimed at finding a vaccine and/or developing antiviral drugs. Despite these efforts, the WHO warned that the virus might never be eradicated. Countries around the world have instated non-pharmaceutical interventions such as social distancing and wearing of masks in public to curb the spreading of the disease. Antiviral polysaccharides provide the ideal opportunity to combat the pathogen via pharmacotherapeutic applications. However, a layer-by-layer nanocoating approach is also envisioned to coat surfaces to which humans are exposed that could harbor pathogenic coronaviruses. By coating masks, clothing, and work surfaces in wet markets among others, these antiviral polysaccharides can ensure passive prevention of the spreading of the virus. It poses a so-called "eradicate-in-place" measure against the virus. Antiviral polysaccharides also provide a green chemistry pathway to virus eradication since these molecules are primarily of biological origin and can be modified by minimal synthetic approaches. They are biocompatible as well as biodegradable. This surface passivation approach could provide a powerful measure against the spreading of coronaviruses.
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Affiliation(s)
- Daniel P. Otto
- Research Focus Area for Chemical Resource Beneficiation, Laboratory for Analytical Services, Faculty of Natural and Agricultural Sciences, North-West University, Potchefstroom 2531, South Africa
| | - Melgardt M. de Villiers
- Division of Pharmaceutical Sciences–Drug Delivery, School of Pharmacy, University of Wisconsin-Madison, 777 Highland Ave, Madison, WI 53705, USA;
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19
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Janardhanam LSL, Indukuri VV, Verma P, Dusane AC, Venuganti VVK. Functionalized layer-by-layer assembled film with directional 5-fluorouracil release to target colon cancer. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 115:111118. [PMID: 32600718 DOI: 10.1016/j.msec.2020.111118] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 05/06/2020] [Accepted: 05/23/2020] [Indexed: 02/09/2023]
Abstract
The objective of this work was to prepare and characterize pH-sensitive capsule containing functionalized layer-by-layer (LbL) assembled polymeric film with directional drug release and evaluate its effectiveness against colon cancer. 5-Fluorouracil (5FU) loaded LbL film was prepared by sequential adsorption of chitosan and alginate polyelectrolytes. This LbL film was coated with polycaprolactone (PCL, 95% w/w) as a backing layer to restrict 5FU release on one-side. The other side constituted the folic acid conjugated chitosan layer for cancer targeting. This film was encapsulated into a gelatin capsule coated with pH-sensitive Eudragit S100. 5FU loaded LbL film was characterized for physical and mechanical properties. Mucoadhesion studies performed using excised rabbit colon showed that chitosan-side of LbL film adhered with significantly (p < 0.05) greater strength compared with PCL-side. Non-everted rat colon-sac model and open colon membrane model studies showed greater permeation of 5FU across the colon wall when adhered to chitosan-side of LbL film compared with PCL-side of the film. Cell monolayer and 3D-spheroid model studies using Caco-2 and COLO 320DM colorectal cancer cells showed significant (p < 0.05) growth inhibition by 5FU loaded LbL film compared with free 5FU solution. In conclusion, pH-sensitive capsule containing 5FU loaded LbL film can be developed to target colorectal cancer for regional drug delivery.
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Affiliation(s)
- Leela Sai Lokesh Janardhanam
- Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Hyderabad 500078, Telangana State, India
| | - Vikram Varma Indukuri
- Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Hyderabad 500078, Telangana State, India
| | - Pratishtha Verma
- Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Hyderabad 500078, Telangana State, India
| | - Apurva Chandrashekhar Dusane
- Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Hyderabad 500078, Telangana State, India
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20
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Fael H, Demirel AL. Nisin/polyanion layer-by-layer films exhibiting different mechanisms in antimicrobial efficacy. RSC Adv 2020; 10:10329-10337. [PMID: 35498610 PMCID: PMC9050377 DOI: 10.1039/c9ra10135g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 02/19/2020] [Indexed: 11/21/2022] Open
Abstract
Nisin/polyanion Layer-by-Layer (LbL) films are reported to exhibit different mechanisms in antimicrobial efficacy depending on the type of polyanion. LbL films consisting of nisin as the polycationic component were prepared using two different polyanionic constituents: poly acrylic acid (PAA) and dextran sulfate (DX). Due to the weaker interaction strength of carboxylate groups with nisin compared to sulfate/nisin, a larger molecular weight of PAA was needed to achieve LbL assembly. PAA-100K/nisin and DX-15K/nisin multilayer films exhibited significantly different properties. PAA–nisin films grew faster compared to DX–nisin films and showed, for 60 bilayer films, an average bilayer thickness of 21.6 nm compared to that of 6.1 nm in DX–nisin films. The total amount of nisin was found to be 17.1 ± 2.2 μg cm−2 in (PAA–nisin)60 and 6.8 ± 0.4 μg cm−2 in (DX–nisin)60 films. The stability of the films was investigated at three different pH values of 6.0, 7.4 and 9.5. (PAA–nisin)60 films exhibited the release of nisin into the solution which resulted in the disintegration of the film over several hours. A burst release was observed in the first hour followed by a slower release and disintegration over 24 hours with a complete release at pH 9.5. The bacterial growth inhibition test against Staphylococcus epidermidis confirmed the antimicrobial activity of nisin released from PAA–nisin films. PAA was found to stabilize nisin and the film-released nisin retained its antimicrobial activity in the neutral and alkaline pH values. Unlike PAA–nisin films, (DX–nisin)60 films were stable at the physiological conditions up to 14 days with no release of nisin. DX–nisin films were found to inhibit the attachment of Staphylococcus epidermidis and prevent biofilm formation. These results clearly demonstrate the effect of different polyanions on nisin LbL films to achieve different mechanisms in antimicrobial efficacy and show the potential of PAA–nisin multilayer films as promising local delivery systems for treatment of burns and wounds, while DX–nisin multilayer films can be employed as stable coatings against bacterial attachment and biofilm formation. Polyanion–nisin multilayer films exhibit antimicrobial activity by controlled release of nisin or as stable biofilm inhibiting coatings depending on polyanion.![]()
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Affiliation(s)
- Hanan Fael
- Department of Chemistry
- Koç University
- Istanbul
- Turkey
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21
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Cui G, Zhao K, You K, Gao Z, Kakuchi T, Feng B, Duan Q. Synthesis and characterization of phenylboronic acid-containing polymer for glucose-triggered drug delivery. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2020; 21:1-10. [PMID: 32002087 PMCID: PMC6968588 DOI: 10.1080/14686996.2019.1700394] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 11/30/2019] [Accepted: 11/30/2019] [Indexed: 05/06/2023]
Abstract
Thermo-, pH- and glucose-responsive polymeric nanoparticles are of great interest in developing a self-regulated drug delivery system. The novel core-shell nanoparticles were synthesized by self-assembly of a phenylboronic acid-based block copolymer poly-(N-isopropylacrylamide)-block-poly(3-acrylamidophenylboronic acid) (PNIPAM136-b-PAPBA16) and a fluorescent complex glucosamine-poly(N-isopropylacrylamide)/Eu(III) (GA-PNIPAM)/Eu(III) based on the cross-linking between PBA- and GA-containing blocks in this work. The nanoparticles can be tuned via thermo-induced collapse or glucose-induced swelling at appropriate pH and temperatures; they had an average kinetic radius was about 80nm, and which showed excellent fluorescence. MTT assays revealed the nanocarriers had no significant cytotoxic response of the micelle when it was observed in the cell line over the concentration range from 0.1 to 1000 μg/ml at any exposure times.
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Affiliation(s)
- Guihua Cui
- Center for Biomaterials, Jilin Medical University, Jilin, China
- Department of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, Jilin, China
| | - Kunming Zhao
- Center for Biomaterials, Jilin Medical University, Jilin, China
| | - Kewei You
- Department of Research, Redpharm Biotechnology Co., Ltd, Beijing, China
| | - Zhengguo Gao
- Chemical and Engineering College, Yantai University, Yantai, Shandong, China
| | - Toyoji Kakuchi
- Division of Biotechnology and Macromolecular Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Japan
| | - Bo Feng
- Department of Pharmacy, Jilin Medical University, Jilin, China
- CONTACT Bo Feng Department of Pharmacy, Jilin Medical University, Jilin, China
| | - Qian Duan
- Department of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, Jilin, China
- Qian Duan Department of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, Jilin, China
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22
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Mansour O, El Joukhar I, Belbekhouche S. H2O2-sensitive delivery microparticles based on the boronic acid chemistry: (Phenylboronic –alginate derivative/dextran) system. REACT FUNCT POLYM 2019. [DOI: 10.1016/j.reactfunctpolym.2019.104377] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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23
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A microfluidic strategy to fabricate ultra-thin polyelectrolyte hollow microfibers as 3D cellular carriers. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 104:109705. [DOI: 10.1016/j.msec.2019.04.084] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 03/25/2019] [Accepted: 04/25/2019] [Indexed: 11/18/2022]
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24
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Koseki Y, Ikuta Y, Cong L, Takano-Kasuya M, Tada H, Watanabe M, Gonda K, Ishida T, Ohuchi N, Tanita K, Taemaitree F, Dao ATN, Onodera T, Oikawa H, Kasai H. Influence of Hydrolysis Susceptibility and Hydrophobicity of SN-38 Nano-Prodrugs on Their Anticancer Activity. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20190088] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Yoshitaka Koseki
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Yoshikazu Ikuta
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Liman Cong
- Department of Medical Physics, Graduate School of Medicine, Tohoku University, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Mayumi Takano-Kasuya
- Department of Medical Physics, Graduate School of Medicine, Tohoku University, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Hiroshi Tada
- Department of Breast and Endocrine Surgical Oncology, Graduate School of Medicine, Tohoku University, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Mika Watanabe
- Department of Pathology, Tohoku University Hospital, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Kohsuke Gonda
- Department of Medical Physics, Graduate School of Medicine, Tohoku University, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Takanori Ishida
- Department of Breast and Endocrine Surgical Oncology, Graduate School of Medicine, Tohoku University, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Noriaki Ohuchi
- Department of Breast and Endocrine Surgical Oncology, Graduate School of Medicine, Tohoku University, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Keita Tanita
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Farsai Taemaitree
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Anh Thi Ngoc Dao
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Tsunenobu Onodera
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Hidetoshi Oikawa
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Hitoshi Kasai
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
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25
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Jia Y, Li J. Molecular Assemblies of Biomimetic Microcapsules. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:8557-8564. [PMID: 30759988 DOI: 10.1021/acs.langmuir.8b04319] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Layer-by-layer (LbL) assembly is a most commonly used method to prepare various microcapsules based on the electrostatic interactions, hydrogen bonding, covalent bonding, and so on. Among these interactions, Schiff base bond formed in covalent assembly not only has an advantage in stability, but also enables the assembled microcapsules with autofluorescence and pH sensitivity. In this Article, we will mainly describe the construction of biomimetic microcapsules through Schiff base mediated LbL assembly. The structures and properties of the assembled microcapsules are introduced and their applications as drug carriers are highlighted.
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Affiliation(s)
- Yi Jia
- Beijing National Laboratory for Molecular Sciences, CAS Key Lab of Colloid, Interface and Chemical Thermodynamics , Institute of Chemistry, Chinese Academy of Sciences , Beijing , 100190 , China
| | - Junbai Li
- Beijing National Laboratory for Molecular Sciences, CAS Key Lab of Colloid, Interface and Chemical Thermodynamics , Institute of Chemistry, Chinese Academy of Sciences , Beijing , 100190 , China
- University of Chinese Academy of Sciences , Beijing , 100049 , China
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26
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Etienne G, Ong ILH, Amstad E. Bioinspired Viscoelastic Capsules: Delivery Vehicles and Beyond. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1808233. [PMID: 31081156 DOI: 10.1002/adma.201808233] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 04/01/2019] [Indexed: 06/09/2023]
Abstract
Microcapsules are often used as individually dispersed carriers of active ingredients to prolong their shelf life or to protect premature reactions with substances contained in the surrounding. This study goes beyond this application and employs microcapsules as principal building blocks of macroscopic 3D materials with well-defined granular structures. To achieve this goal and inspired by nature, capsules are fabricated from block-copolymer surfactants that are functionalized with catechols, a metal-coordinating motive. These surfactants self-assemble at the surface of emulsion drops where they are ionically cross-linked to form viscoelastic capsules that display a low permeability even toward small encapsulants. It is demonstrated that the combination of the mechanical strength, flexibility, and stickiness of the capsules enables their additive manufacturing into macroscopic granular structures. Thereby, they open up new opportunities for 3D printing of soft, self-healing materials composed of individual compartments that can be functionalized with different types of spatially separated reagents.
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Affiliation(s)
- Gianluca Etienne
- Soft Materials Laboratory, Institute of Materials, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - Irvine Lian Hao Ong
- Soft Materials Laboratory, Institute of Materials, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - Esther Amstad
- Soft Materials Laboratory, Institute of Materials, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
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27
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Zhang Z, Zhang S, Su R, Xiong D, Feng W, Chen J. Controlled Release Mechanism and Antibacterial Effect of Layer-By-Layer Self-Assembly Thyme Oil Microcapsule. J Food Sci 2019; 84:1427-1438. [PMID: 31070787 DOI: 10.1111/1750-3841.14610] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 02/09/2019] [Accepted: 03/20/2019] [Indexed: 01/07/2023]
Abstract
Thyme essential oil-loaded microcapsules (TMS) were fabricated using natural polysaccharide chitosan (CS) and sodium alginate (SA) as the shell material via the method of layer-by-layer (LBL) assembly. The accumulated release rates of thyme oil and microcapsules at 4 °C were 42.50% and 10.16%, respectively. After heating at 100 °C for 5 hr, the release rate of the 0, 2, 4, 6 layers assembled microcapsules were 100%, 48.84%, 28.38%, 19.3%, severally. Microcapsules also had good pH sensitivity in the range of 4 to 10. Antimicrobial function studies showed that the microcapsules are more effective than thyme oil for three tested microorganisms. When the temperature rose from 37 °C to 121 °C, the antibacterial zone of thyme oil gradually decreased from 18.5 ± 0.6 mm to 12.3 ± 0.6 mm, although inhibition rate of microcapsules increased from 87.97% to 99.75%. The antibacterial effect of thyme oil declined with the increase of pH, in terms of microcapsules, the efficiency was better under acidic or alkaline conditions. The thyme oil microcapsules can suppress the growth of Staphylococcus aureus in milk and prolong its shelf life. It was determined that this microcapsule could be a potential alternative as a natural antimicrobial agent in food and pharmaceutical industries. PRACTICAL APPLICATION: This work provided release performance and mechanism of layer-by-layer (LBL) thyme oil microcapsule under different conditions, and further studies showed its antibacterial ability to explore how herb essential oils can be potentially applied in food packaging and antibacterial areas.
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Affiliation(s)
- Zhao Zhang
- College of Food Science and Technology, Huazhong Agricultural Univ., 430070, Wuhan, Hubei, People's Republic of China
| | - Shanshan Zhang
- College of Food Science and Technology, Huazhong Agricultural Univ., 430070, Wuhan, Hubei, People's Republic of China
| | - Rongrong Su
- College of Food Science and Technology, Huazhong Agricultural Univ., 430070, Wuhan, Hubei, People's Republic of China
| | - Die Xiong
- College of Food Science and Technology, Huazhong Agricultural Univ., 430070, Wuhan, Hubei, People's Republic of China
| | - Wu Feng
- College of Food Science and Technology, Huazhong Agricultural Univ., 430070, Wuhan, Hubei, People's Republic of China
| | - Jiaping Chen
- College of Food Science and Technology, Huazhong Agricultural Univ., 430070, Wuhan, Hubei, People's Republic of China
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28
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Xu C, Lei C, Yu C. Mesoporous Silica Nanoparticles for Protein Protection and Delivery. Front Chem 2019; 7:290. [PMID: 31119124 PMCID: PMC6504683 DOI: 10.3389/fchem.2019.00290] [Citation(s) in RCA: 128] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 04/09/2019] [Indexed: 01/29/2023] Open
Abstract
Therapeutic proteins are widely used in clinic for numerous therapies such as cancer therapy, immune therapy, diabetes management and infectious diseases control. The low stability and large size of proteins generally compromise their therapeutic effects. Thus, it is a big challenge to deliver active forms of proteins into targeted place in a controlled manner. Nanoparticle based delivery systems offer a promising method to address the challenges. In particular, mesoporous silica nanoparticles (MSNs) are of special interest for protein delivery due to their excellent biocompatibility, high stability, rigid framework, well-defined pore structure, easily controllable morphology and tuneable surface chemistry. Therefore, enhanced stability, improved activity, responsive release, and intracellular delivery of proteins have been achieved using MSNs as delivery vehicles. Here, we systematically review the effects of various structural parameters of MSNs on protein loading, protection, and delivery performance. We also highlight the status of the most recent progress using MSNs for intracellular delivery, extracellular delivery, antibacterial proteins delivery, enzyme mobilization, and catalysis.
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Affiliation(s)
- Chun Xu
- School of Dentistry, The University of Queensland, Brisbane, QLD, Australia
| | - Chang Lei
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, Australia
| | - Chengzhong Yu
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, Australia
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29
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Recent Advances in Phenylboronic Acid-Based Gels with Potential for Self-Regulated Drug Delivery. Molecules 2019; 24:molecules24061089. [PMID: 30893913 PMCID: PMC6470492 DOI: 10.3390/molecules24061089] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 03/14/2019] [Accepted: 03/15/2019] [Indexed: 12/02/2022] Open
Abstract
Glucose-sensitive drug platforms are highly attractive in the field of self-regulated drug delivery. Drug carriers based on boronic acid (BA), especially phenylboronic acid (PBA), have been designed for glucose-sensitive self-regulated insulin delivery. The PBA-functionalized gels have attracted more interest in recent years. The cross-linked three-dimensional (3D) structure endows the glucose-sensitive gels with great physicochemical properties. The PBA-based platforms with cross-linked structures have found promising applications in self-regulated drug delivery systems. This article summarizes some recent attempts at the developments of PBA-mediated glucose-sensitive gels for self-regulated drug delivery. The PBA-based glucose-sensitive gels, including hydrogels, microgels, and nanogels, are expected to significantly promote the development of smart self-regulated drug delivery systems for diabetes therapy.
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30
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Liu R, Dai J, Ma L, Chen J, Shi X, Du Y, Li Z, Deng H. Low-temperature plasma treatment-assisted layer-by-layer self-assembly for the modification of nanofibrous mats. J Colloid Interface Sci 2019; 540:535-543. [DOI: 10.1016/j.jcis.2019.01.054] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 01/13/2019] [Accepted: 01/14/2019] [Indexed: 01/09/2023]
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31
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Yoshida K, Ono T, Dairaku T, Kashiwagi Y, Sato K. Preparation of Hydrogen Peroxide Sensitive Nanofilms by a Layer-by-Layer Technique. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:E941. [PMID: 30445711 PMCID: PMC6266851 DOI: 10.3390/nano8110941] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 11/14/2018] [Accepted: 11/14/2018] [Indexed: 12/24/2022]
Abstract
H₂O₂-sensitive nanofilms composed of DNA and hemin-appended poly(ethyleneimine) (H-PEI) were prepared by a layer-by-layer deposition of DNA and H-PEI through an electrostatic interaction. The (H-PEI/DNA)₅ film was decomposed by addition of 10 mM H₂O₂. H₂O₂-induced decomposition was also confirmed in the hemin-containing (PEI/DNA)₅ in which hemin molecules were adsorbed by a noncovalent bond to the nanofilm. On the other hand, the (PEI/DNA)₅ film containing no hemin and the (H-PEI/PSS)₅ film using PSS instead of DNA did not decompose even with 100 mM H₂O₂. The mechanism of nanofilm decomposition was thought that more reactive oxygen species (ROS) was formed by reaction of hemin and H₂O₂ and then the ROS caused DNA cleavage. As a result (H-PEI/DNA)₅ and hemin-containing (PEI/DNA)₅ films were decomposed. The decomposition rate of these nanofilms were depended on concentration of H₂O₂, modification ratio of hemin, pH, and ionic strength.
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Affiliation(s)
- Kentaro Yoshida
- School of Pharmaceutical Sciences, Ohu University 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| | - Tetsuya Ono
- School of Pharmaceutical Sciences, Ohu University 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| | - Takenori Dairaku
- School of Pharmaceutical Sciences, Ohu University 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| | - Yoshitomo Kashiwagi
- School of Pharmaceutical Sciences, Ohu University 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| | - Katsuhiko Sato
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
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Al-Nemrawi NK, Marques J, Tavares CJ, Oweis RJ, Al-Fandi MG. Synthesis and characterization of photocatalytic polyurethane and poly(methyl methacrylate) microcapsules for the controlled release of methotrexate. Drug Dev Ind Pharm 2018; 44:2083-2088. [PMID: 30112927 DOI: 10.1080/03639045.2018.1513023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The aim of this work is to prepare ultraviolet (UV) triggered controlled release of compounds from microcapsule systems (MCs). Polyurethane (PU) and poly(methyl methacrylate) (PMMA) microcapsules were studied with/without chemical functionalization using photocatalytic TiO2 nanoparticles (NPs) on their surface. Once TiO2 nanoparticles are illuminated with UV light (λ = 370 nm), they initiate the rupture of the polymeric bonds of the microcapsule and subsequently initiate the encapsulated compound release, methotrexate (MTX) or rhodamine (Rh), in the present work. The size, polydispersity, charge, and yield of all MCs were measured, being the methotrexate drug release for all systems determined and compared with and without functionalization with TiO2 NPs, under dark, visible light and UV illumination in vitro. Finally, the Rh release was characterized using fluorescence microscopy. The TiO2 NPs size is around 10 nm, as determined by X-ray diffraction experiments. The PU MCs average size is around 60 µm, its electric charge +3.11 mV and yield around 85%. As for the PMMA MCs, the average size is around 280 µm, its electric charge -7.2 mV and yield around 25% and 30% for both MTX and Rh, respectively. In general, adding TiO2 NPs or the encapsulated products to the MCs does not affect the size but functionalization with TiO2 NPs lowers the electric charge. Microcapsules functionalized with TiO2 nanoparticles and irradiated with UV light presented the highest release of MTX and Rh. All other samples showed lower drug release levels when studied under the same conditions.
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Affiliation(s)
- Nusaiba K Al-Nemrawi
- a Department of Pharmaceutical technology, Jordan University of Science and Technology , Irbid , Jordan
| | - Juliana Marques
- b Centre of Physics, University of Minho , Guimarães , Portugal
| | | | - Rami J Oweis
- c Nanotechnology Institute, Jordan University of Science and Technology, , Irbid , Jordan
| | - Mohamed G Al-Fandi
- c Nanotechnology Institute, Jordan University of Science and Technology, , Irbid , Jordan
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Preparation of multilayer films using the negative charge of phenylboronic acid and its response to pH change, fructose, and hydrogen peroxide. Colloid Polym Sci 2018. [DOI: 10.1007/s00396-018-4380-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Yoshida K, Sato K, Ono T, Dairaku T, Kashiwagi Y. Preparation of Nafion/Polycation Layer-by-Layer Films for Adsorption and Release of Insulin. Polymers (Basel) 2018; 10:E812. [PMID: 30960737 PMCID: PMC6403611 DOI: 10.3390/polym10080812] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 07/20/2018] [Accepted: 07/23/2018] [Indexed: 11/30/2022] Open
Abstract
Thin films were prepared using layer-by-layer (LbL) deposition of Nafion (NAF) and polycations such as poly(allylamine hydrochloride) (PAH), poly(ethyleneimine) (PEI), and poly(diallydimethylammonium chloride) (PDDA). Insulin was then adsorbed on the NAF-polycation LbL films by immersion in an insulin solution. The NAF-polycation LbL films were characterized using a quartz crystal microbalance and an atomic force microscope. The release of insulin from the LbL films was characterized using UV-visible adsorption spectroscopy and fluorescence emission spectroscopy. The greatest amount of insulin was adsorbed on the NAF-PAH LbL film. The amount of insulin adsorbed on the (NAF/PAH)₅NAF LbL films by immersion in a 1 mg mL-1 insulin solution at pH 7.4 was 61.8 µg cm-2. The amount of insulin released from the LbL films was higher when immersed in insulin solutions at pH 2.0 and pH 9.0 than at pH 7.4. Therefore, NAF-polycations could be employed as insulin delivery LbL films under mild conditions and as an insulin release control system according to pH change.
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Affiliation(s)
- Kentaro Yoshida
- School of Pharmaceutical Sciences, Ohu University, 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| | - Katsuhiko Sato
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
| | - Tetsuya Ono
- School of Pharmaceutical Sciences, Ohu University, 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| | - Takenori Dairaku
- School of Pharmaceutical Sciences, Ohu University, 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| | - Yoshitomo Kashiwagi
- School of Pharmaceutical Sciences, Ohu University, 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
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Jiang H, Yu W, Oscai M, Ziaie B. A Smart Capsule With a Hydrogel-Based pH-Triggered Release Switch for GI-Tract Site-Specific Drug Delivery. IEEE Trans Biomed Eng 2018; 65:2808-2813. [PMID: 29993401 DOI: 10.1109/tbme.2018.2818463] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
In this paper, we present a smart capsule that can release its payload after a predetermined/adjustable delay subsequent to passing from the stomach into the small intestine. The described capsule (9 mm × 22 mm) comprises a pH-sensitive hydrogel-based switch, an electronic compartment containing a capacitor charged to 2.7 V, and a drug reservoir capped by a taut fusible thread intertwined with a nichrome wire. The nichrome wire, capacitor, and pH-responsive electrical switch are connected in series. The pH transition the capsule encounters when it enters the small intestine triggers controlled swelling of the pH-responsive hydrogel, which pushes a conductive elastic membrane to close an electrical switch. This initiates a sequence of events, i.e., the discharge of the capacitor, heating the nichrome wire, breakage of the fusible thread, and release of the payload stored in the capsule reservoir through the unlatched cap. The time lag between initiation of hydrogel swelling (by the near-neutral pH of the small intestine) and payload release is controlled by the deflection of the conductive elastic membrane and the gap separating the contacts. The release time can be set to within ±5 min after one hour in the small intestine (start of the swelling) increasing to ±40 min after 4 h.
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Shen H, Li F, Wang D, Yang Z, Yao C, Ye Y, Wang X. Chitosan-alginate BSA-gel-capsules for local chemotherapy against drug-resistant breast cancer. Drug Des Devel Ther 2018; 12:921-934. [PMID: 29719378 PMCID: PMC5914552 DOI: 10.2147/dddt.s158001] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND AND OBJECT Polyelectrolyte microcapsule is a promising candidate for multifunctional drug delivery system. However, the lack of reports about animal experiments have greatly slowed down their development for drug delivery. We engineered biodegradable chitosan-alginate polyelectrolyte multilayer capsule filled with bovine serum albumin gel (BSA-gel-capsule). Herein, we demonstrated their applicability for local chemotherapy, a means of treating local or regional malignancies by direct administration of anti-tumor agents to tumor sites. METHOD Doxorubicin (DOX) was loaded in BSA-gel-capsules and DOX-resistant cell line (MCF-7/ADR cells) was employed for antitumor studies in vitro. The cytotoxicity, cellular uptake and distribution of DOX from BSA-gel-capsules were studied. Afterwards, MCF-7/ADR xenografts tumor model was established in nude mice. The in vivo antitumor efficacy of DOX-loaded BSA-gel-capsules by intratumor injection was then evaluated. RESULT Compared with free DOX, more effective cytotoxicity against MCF-7/ADR cells after treatment with DOX-loaded BSA-gel-capsules was revealed, demonstrating the positive reversal effect on drug-resistance. Thereafter, the more cellular uptake and nucleus distribution of DOX from BSA-gel-capsules in MCF-7/ADR cells provided convincing explanation for the reversal effect. DOX-loaded BSA-gel-capsules displayed remarkably more antitumor efficacy than free DOX in MCF-7/ADR cell-xenografted mice. Finally, the high DOX accumulation and prolonged retention in tumor site after local administration of DOX-loaded BSA-gel-capsules was demonstrated, displaying the unique advantages of BSA-gel-capsules for local chemotherapy. CONCLUSION These findings indicate that DOX-loaded BSA-gel-capsules should be considered a potential candidate for the treatment of drug-resistant breast cancer. This paper provides a feasibility for the local chemotherapy of polyelectrolyte microcapsules, which will be a big step towards their application as drug delivery vehicles.
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MESH Headings
- Alginates/chemistry
- Alginates/pharmacology
- Animals
- Antineoplastic Agents/chemistry
- Antineoplastic Agents/pharmacology
- Breast Neoplasms/drug therapy
- Breast Neoplasms/pathology
- Capsules/chemistry
- Capsules/pharmacology
- Cell Line, Tumor
- Cell Proliferation/drug effects
- Chitosan/chemistry
- Chitosan/pharmacology
- Dose-Response Relationship, Drug
- Drug Resistance, Neoplasm/drug effects
- Drug Screening Assays, Antitumor
- Female
- Gels/chemistry
- Gels/pharmacology
- Glucuronic Acid/chemistry
- Glucuronic Acid/pharmacology
- Hexuronic Acids/chemistry
- Hexuronic Acids/pharmacology
- Humans
- MCF-7 Cells
- Mammary Neoplasms, Experimental/drug therapy
- Mammary Neoplasms, Experimental/pathology
- Mice
- Mice, Inbred BALB C
- Mice, Nude
- Serum Albumin, Bovine/chemistry
- Serum Albumin, Bovine/metabolism
- Structure-Activity Relationship
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Affiliation(s)
- Haijun Shen
- Department of Preventive Medicine and Public Health Laboratory Science, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Fang Li
- Department of Preventive Medicine and Public Health Laboratory Science, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Dongxia Wang
- Department of Preventive Medicine and Public Health Laboratory Science, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Zhihan Yang
- Department of Preventive Medicine and Public Health Laboratory Science, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Chunfang Yao
- Department of Preventive Medicine and Public Health Laboratory Science, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Yang Ye
- Department of Preventive Medicine and Public Health Laboratory Science, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Xiaona Wang
- Department of Internal Medicine of Jiangsu University Hospital Workers, The Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, China
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Ferreira CF, de Magalhães Barreto E, Zini B. Optimizing Anterior Implant Esthetics With a Vascularized Interpositional Periosteal Connective Tissue Graft for Ridge Augmentation: A Case Report. J ORAL IMPLANTOL 2018. [PMID: 29517410 DOI: 10.1563/aaid-joi-d-17-00264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Achieving excellence in anterior rehabilitations requires close cooperation between the periodontist and the prosthodontist. Many techniques can be used to restore the lost alveolar hard and soft tissues. The more severe the peri-implant defect, the higher the challenge and lower the predictability of the procedure. The present case consists of Seibert Class III with malaligned implants in the esthetic zone resolved with a cost-modified treatment plan to reestablish esthetics in the anterior maxilla using a rotated palatal flap. The vascularized interpositional periosteal connective tissue graft was effective in augmenting the soft tissue in the esthetic zone and remained stable over a 2-year period. Additional long-term clinical studies are necessary to support these results.
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Affiliation(s)
- Cimara Fortes Ferreira
- 1 Discipline Periodontology, University of Tennessee Health Sciences College of Dentistry, Memphis, Tenn
| | | | - Barbara Zini
- 2 Private practice, Florianópolis, Santa Catarina, Brazil
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38
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Zhao L, Xiao C, Wang L, Gai G, Ding J. Glucose-sensitive polymer nanoparticles for self-regulated drug delivery. Chem Commun (Camb) 2018; 52:7633-52. [PMID: 27194104 DOI: 10.1039/c6cc02202b] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Glucose-sensitive drug delivery systems, which can continuously and automatically regulate drug release based on the concentration of glucose, have attracted much interest in recent years. Self-regulated drug delivery platforms have potential application in diabetes treatment to reduce the intervention and improve the quality of life for patients. At present, there are three types of glucose-sensitive drug delivery systems based on glucose oxidase (GOD), concanavalin A (Con A), and phenylboronic acid (PBA) respectively. This review covers the recent advances in GOD-, Con A-, or PBA-mediated glucose-sensitive nanoscale drug delivery systems, and provides their major challenges and opportunities.
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Affiliation(s)
- Li Zhao
- Laboratory of Building Energy-Saving Technology Engineering, College of Material Science and Engineering, Jilin Jianzhu University, Changchun 130118, P. R. China
| | - Chunsheng Xiao
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China.
| | - Liyan Wang
- Laboratory of Building Energy-Saving Technology Engineering, College of Material Science and Engineering, Jilin Jianzhu University, Changchun 130118, P. R. China
| | - Guangqing Gai
- Laboratory of Building Energy-Saving Technology Engineering, College of Material Science and Engineering, Jilin Jianzhu University, Changchun 130118, P. R. China
| | - Jianxun Ding
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China.
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Zhang L, Qin H, Li J, Qiu JN, Huang JM, Li MC, Guan YQ. Preparation and characterization of layer-by-layer hypoglycemic nanoparticles with pH-sensitivity for oral insulin delivery. J Mater Chem B 2018; 6:7451-7461. [DOI: 10.1039/c8tb02113a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We developed an insulin oral delivery system with the combination of pH-sensitive material and structure to avoid intestinal degradation.
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Affiliation(s)
- Li Zhang
- School of Life Science, South China Normal University
- Guangzhou 510631
- China
- National Engineering Research Center for Healthcare Devices, Guangdong Key Lab of Medical Electronic Instruments and Polymer Material Products, Guangdong Institute of Medical Instruments
- Guangzhou 510500
| | - Han Qin
- School of Life Science, South China Normal University
- Guangzhou 510631
- China
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials South China Academy of Advanced Optoelectronics, South China Normal University
- Guangzhou 510006
| | - Jian Li
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University
- Guangzhou 510631
- China
| | - Jia-Ni Qiu
- School of Life Science, South China Normal University
- Guangzhou 510631
- China
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials South China Academy of Advanced Optoelectronics, South China Normal University
- Guangzhou 510006
| | - Jing-Min Huang
- School of Life Science, South China Normal University
- Guangzhou 510631
- China
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials South China Academy of Advanced Optoelectronics, South China Normal University
- Guangzhou 510006
| | - Ming-Chao Li
- School of Life Science, South China Normal University
- Guangzhou 510631
- China
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials South China Academy of Advanced Optoelectronics, South China Normal University
- Guangzhou 510006
| | - Yan-Qing Guan
- School of Life Science, South China Normal University
- Guangzhou 510631
- China
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials South China Academy of Advanced Optoelectronics, South China Normal University
- Guangzhou 510006
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40
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Fabrication of Hydrogel Materials for Biomedical Applications. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1077:197-224. [PMID: 30357691 DOI: 10.1007/978-981-13-0947-2_12] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Hydrogels are three-dimensional hydrophilic polymeric networks that can be made from a wide range of natural and synthetic polymers. This review discusses recent advanced engineering methods to fabricate hydrogels for biomedical applications with emphasis in cardiac constructs and wound healing. Layer-by-Layer (LbL) assembly offers a tissue-engineered construct with robust and highly ordered structures for cell proliferation and differentiation. Three-dimensional printings, including inkjet printing, fused deposition modeling, and stereolithographic apparatus, have been widely employed to fabricate complex structures (e.g., heart valves). Moreover, the state-of-the-art design of intelligent/stimulus-responsive hydrogels can be used for a wide range of biomedical applications, including drug delivery, glucose delivery, shape memory, wound dressings, and so on. In the future, an increasing number of hydrogels with tunable mechanical properties and versatile functions will be developed for biomedical applications by employing advanced engineering techniques with novel material design.
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41
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Fu LH, Qi C, Lin J, Huang P. Catalytic chemistry of glucose oxidase in cancer diagnosis and treatment. Chem Soc Rev 2018; 47:6454-6472. [DOI: 10.1039/c7cs00891k] [Citation(s) in RCA: 357] [Impact Index Per Article: 59.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This tutorial review focuses on the state-of-the-art progress in GOx-based cancer diagnosis and treatment, including the general principles for the design and construction of GOx-based biosensors and cancer therapeutic approaches, and their biological applications in detail. Moreover, the current trends and key problems, as well as the challenges and future prospects of GOx-based catalytic systems in biomedicine are also discussed in the end.
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Affiliation(s)
- Lian-Hua Fu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging
- Laboratory of Evolutionary Theranostics (LET)
- School of Biomedical Engineering
- Health Science Center
- Shenzhen University
| | - Chao Qi
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging
- Laboratory of Evolutionary Theranostics (LET)
- School of Biomedical Engineering
- Health Science Center
- Shenzhen University
| | - Jing Lin
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging
- Laboratory of Evolutionary Theranostics (LET)
- School of Biomedical Engineering
- Health Science Center
- Shenzhen University
| | - Peng Huang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging
- Laboratory of Evolutionary Theranostics (LET)
- School of Biomedical Engineering
- Health Science Center
- Shenzhen University
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42
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Feng C, Wang K, Lin Y, Song Z, Lu Y, Liu J, Zhu D, Li Y, Dong C. Extracellular retention of a cyclopamine nanoformulation leveraging larger size and more negative charge for improved breast cancer treatment. J Mater Chem B 2018; 6:1834-1843. [PMID: 32254255 DOI: 10.1039/c7tb02777j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We achieved greater extracellular retention of nanoparticles, by leveraging their larger size and negative charge, for improving the effects of a drug with extracellular targeting sites.
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Affiliation(s)
- Chan Feng
- Cancer Center
- Shanghai East Hospital
- Tongji University
- Shanghai 200120
- P. R. China
| | - Kun Wang
- The Institute for Biomedical Engineering & Nano Science (iNANO)
- Tongji University School of Medicine
- Shanghai 200092
- P. R. China
| | - Yun Lin
- Cancer Center
- Shanghai East Hospital
- Tongji University
- Shanghai 200120
- P. R. China
| | - Zhiwang Song
- Cancer Center
- Shanghai East Hospital
- Tongji University
- Shanghai 200120
- P. R. China
| | - Yonglin Lu
- Cancer Center
- Shanghai East Hospital
- Tongji University
- Shanghai 200120
- P. R. China
| | - Jie Liu
- Cancer Center
- Shanghai East Hospital
- Tongji University
- Shanghai 200120
- P. R. China
| | - Donglei Zhu
- Cancer Center
- Shanghai East Hospital
- Tongji University
- Shanghai 200120
- P. R. China
| | - Yongyong Li
- The Institute for Biomedical Engineering & Nano Science (iNANO)
- Tongji University School of Medicine
- Shanghai 200092
- P. R. China
| | - Chunyan Dong
- Cancer Center
- Shanghai East Hospital
- Tongji University
- Shanghai 200120
- P. R. China
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Liu J, Fan X, Xue Y, Liu Y, Song L, Wang R, Zhang H, Zhang Q. Fabrication of polymer capsules by an original multifunctional, active, amphiphilic macromolecule, and its application in preparing PCM microcapsules. NEW J CHEM 2018. [DOI: 10.1039/c8nj00546j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Based on our recent discovery that D-PGMA solution showed excellent amphiphilic and reinitiation properties, an eco-friendly, facile and scalable method to prepare polymeric capsules was proposed.
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Affiliation(s)
- Jin Liu
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi’an 710072
- China
| | - Xinlong Fan
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi’an 710072
- China
| | - Ying Xue
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi’an 710072
- China
| | - Yibin Liu
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi’an 710072
- China
| | - Lixun Song
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi’an 710072
- China
| | - Rumin Wang
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi’an 710072
- China
| | - Hepeng Zhang
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi’an 710072
- China
| | - Qiuyu Zhang
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi’an 710072
- China
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Lactate-induced decomposition of layer-by-layer films composed of phenylboronic acid-modified poly(allylamine) and poly(vinyl alcohol) under extracellular tumor conditions. J Colloid Interface Sci 2018; 510:302-307. [DOI: 10.1016/j.jcis.2017.09.075] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 09/19/2017] [Accepted: 09/20/2017] [Indexed: 02/05/2023]
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45
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Akiba U, Minaki D, Anzai JI. Photosensitive Layer-by-Layer Assemblies Containing Azobenzene Groups: Synthesis and Biomedical Applications. Polymers (Basel) 2017; 9:E553. [PMID: 30965853 PMCID: PMC6418643 DOI: 10.3390/polym9110553] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 10/23/2017] [Accepted: 10/24/2017] [Indexed: 12/20/2022] Open
Abstract
This review provides an overview of the syntheses of photosensitive layer-by-layer (LbL) films and microcapsules modified with azobenzene derivatives and their biomedical applications. Photosensitive LbL films and microcapsules can be prepared by alternate deposition of azobenzene-bearing polymers and counter polymers on the surface of flat substrates and microparticles, respectively. Azobenzene residues in the films and microcapsules exhibit trans-to-cis photoisomerization under UV light, which causes changes in the physical or chemical properties of the LbL assemblies. Therefore, azobenzene-functionalized LbL films and microcapsules have been used for the construction of photosensitive biomedical devices. For instance, cell adhesion on the surface of a solid can be controlled by UV light irradiation by coating the surface with azobenzene-containing LbL films. In another example, the ion permeability of porous materials coated with LbL films can be regulated by UV light irradiation. Furthermore, azobenzene-containing LbL films and microcapsules have been used as carriers for drug delivery systems sensitive to light. UV light irradiation triggers permeability changes in the LbL films and/or decomposition of the microcapsules, which results in the release of encapsulated drugs and proteins.
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Affiliation(s)
- Uichi Akiba
- Graduate School of Engineering and Science, Akita University, 1-1 Tegata Gakuen-machi, Akita 010-8502, Japan.
| | - Daichi Minaki
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
| | - Jun-Ichi Anzai
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
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Park BW, Zhuang J, Yasa O, Sitti M. Multifunctional Bacteria-Driven Microswimmers for Targeted Active Drug Delivery. ACS NANO 2017; 11:8910-8923. [PMID: 28873304 DOI: 10.1021/acsnano.7b03207] [Citation(s) in RCA: 166] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
High-performance, multifunctional bacteria-driven microswimmers are introduced using an optimized design and fabrication method for targeted drug delivery applications. These microswimmers are made of mostly single Escherichia coli bacterium attached to the surface of drug-loaded polyelectrolyte multilayer (PEM) microparticles with embedded magnetic nanoparticles. The PEM drug carriers are 1 μm in diameter and are intentionally fabricated with a more viscoelastic material than the particles previously studied in the literature. The resulting stochastic microswimmers are able to swim at mean speeds of up to 22.5 μm/s. They can be guided and targeted to specific cells, because they exhibit biased and directional motion under a chemoattractant gradient and a magnetic field, respectively. Moreover, we demonstrate the microswimmers delivering doxorubicin anticancer drug molecules, encapsulated in the polyelectrolyte multilayers, to 4T1 breast cancer cells under magnetic guidance in vitro. The results reveal the feasibility of using these active multifunctional bacteria-driven microswimmers to perform targeted drug delivery with significantly enhanced drug transfer, when compared with the passive PEM microparticles.
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Affiliation(s)
- Byung-Wook Park
- Physical Intelligence Department, Max Planck Institute for Intelligent Systems , 70569 Stuttgart, Germany
| | - Jiang Zhuang
- Physical Intelligence Department, Max Planck Institute for Intelligent Systems , 70569 Stuttgart, Germany
| | - Oncay Yasa
- Physical Intelligence Department, Max Planck Institute for Intelligent Systems , 70569 Stuttgart, Germany
| | - Metin Sitti
- Physical Intelligence Department, Max Planck Institute for Intelligent Systems , 70569 Stuttgart, Germany
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Smolkova B, Dusinska M, Gabelova A. Nanomedicine and epigenome. Possible health risks. Food Chem Toxicol 2017; 109:780-796. [PMID: 28705729 DOI: 10.1016/j.fct.2017.07.020] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 07/08/2017] [Indexed: 02/07/2023]
Abstract
Nanomedicine is an emerging field that combines knowledge of nanotechnology and material science with pharmaceutical and biomedical sciences, aiming to develop nanodrugs with increased efficacy and safety. Compared to conventional therapeutics, nanodrugs manifest higher stability and circulation time, reduced toxicity and improved targeted delivery. Despite the obvious benefit, the accumulation of imaging agents and nanocarriers in the body following their therapeutic or diagnostic application generates concerns about their safety for human health. Numerous toxicology studies have demonstrated that exposure to nanomaterials (NMs) might pose serious risks to humans. Epigenetic modifications, representing a non-genotoxic mechanism of toxicant-induced health effects, are becoming recognized as playing a potential causative role in the aetiology of many diseases including cancer. This review i) provides an overview of recent advances in medical applications of NMs and ii) summarizes current evidence on their possible epigenetic toxicity. To discern potential health risks of NMs, since current data are mostly based upon in vitro and animal models, a better understanding of functional relationships between NM exposure, epigenetic deregulation and phenotype is required.
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Affiliation(s)
- Bozena Smolkova
- Cancer Research Institute, Biomedical Research Center, Slovak Academy of Sciences, 845 05 Bratislava, Slovakia.
| | - Maria Dusinska
- Health Effects Laboratory MILK, NILU- Norwegian Institute for Air Research, 2007 Kjeller, Norway
| | - Alena Gabelova
- Cancer Research Institute, Biomedical Research Center, Slovak Academy of Sciences, 845 05 Bratislava, Slovakia
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Glucose Oxidase-Based Glucose-Sensitive Drug Delivery for Diabetes Treatment. Polymers (Basel) 2017; 9:polym9070255. [PMID: 30970930 PMCID: PMC6432078 DOI: 10.3390/polym9070255] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 06/19/2017] [Accepted: 06/25/2017] [Indexed: 11/21/2022] Open
Abstract
The glucose-sensitive drug delivery systems based on glucose oxidase (GOD), which exhibit highly promising applications in diabetes therapy, have attracted much more interest in recent years. The self-regulated drug delivery systems regulate drug release by glucose concentration automatically and continuously to control the blood glucose level (BGL) in normoglycemic state. This review covers the recent advances at the developments of GOD-based glucose-sensitive drug delivery systems and their in vivo applications for diabetes treatment. The applications of GOD-immobilized platforms, such as self-assembly layer-by-layer (LbL) films and polymer vesicles, cross-linking hydrogels and microgels, hybrid mesoporous silica nanoparticles, and microdevices fabricated with insulin reservoirs have been surveyed. The glucose-sensitive drug delivery systems based on GOD are expected to be a typical candidate for smart platforms for potential applications in diabetes therapy.
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Wang B, Yoshida K, Sato K, Anzai JI. Phenylboronic Acid-Functionalized Layer-by-Layer Assemblies for Biomedical Applications. Polymers (Basel) 2017; 9:E202. [PMID: 30970879 PMCID: PMC6432399 DOI: 10.3390/polym9060202] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 05/26/2017] [Accepted: 05/29/2017] [Indexed: 02/02/2023] Open
Abstract
Recent progress in the development of phenylboronic acid (PBA)-functionalized layer-by-layer (LbL) assemblies and their biomedical applications was reviewed. Stimuli-sensitive LbL films and microcapsules that exhibit permeability changes or decompose in response to sugars and hydrogen peroxide (H₂O₂) have been developed using PBA-bearing polymers. The responses of PBA-modified LbL assemblies arise from the competitive binding of sugars to PBA in the films or oxidative decomposition of PBA by H₂O₂. Electrochemical glucose sensors have been fabricated by coating the surfaces of electrodes by PBA-modified LbL films, while colorimetric and fluorescence sensors can be prepared by modifying LbL films with boronic acid-modified dyes. In addition, PBA-modified LbL films and microcapsules have successfully been used in the construction of drug delivery systems (DDS). Among them, much effort has been devoted to the glucose-triggered insulin delivery systems, which are constructed by encapsulating insulin in PBA-modified LbL films and microcapsules. Insulin is released from the PBA-modified LbL assemblies upon the addition of glucose resulting from changes in the permeability of the films or decomposition of the film entity. Research into insulin DDS is currently focused on the development of high-performance devices that release insulin in response to diabetic levels of glucose (>10 mM) but remain stable at normal levels (~5 mM) under physiological conditions.
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Affiliation(s)
- Baozhen Wang
- Department of Nutrition and Food Hygiene, School of Public Health, Shandong University, 44 Wenhua Xilu, Jinan 250012, China.
| | - Kentaro Yoshida
- School of Pharmaceutical Science, Ohu University, 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| | - Katsuhiko Sato
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
| | - Jun-Ichi Anzai
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
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Sato K, Awaji K, Ito M, Anzai JI. Preparation of H2O2-induced poly (amidoamine) dendrimer-release multilayer films. Colloid Polym Sci 2017. [DOI: 10.1007/s00396-017-4073-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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