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Wintjens AGWE, Fransen PPKH, Lenaerts K, Liu H, van Almen GC, van Steensel S, Gijbels MJ, de Hingh IHJT, Dankers PYW, Bouvy ND. Development of a Supramolecular Hydrogel for Intraperitoneal Injections. Macromol Biosci 2024; 24:e2300005. [PMID: 36934315 DOI: 10.1002/mabi.202300005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 02/22/2023] [Indexed: 03/20/2023]
Abstract
Local intraperitoneal drug administration is considered a challenging drug delivery route. The therapeutic efficiency is low, mainly due to rapid clearance of drugs. To increase the intraperitoneal retention time of specific drugs, a pH-sensitive supramolecular hydrogel that can act as a drug delivery vehicle is developed. To establish the optimal formulation of the hydrogel and to study its feasibility, safety, and tissue compatibility, in vitro, postmortem, and in vivo experiments are performed. In vitro tests reveal that a hydrogelator formulation with pH ≥ 9 results in a constant viscosity of 0.1 Pa·s. After administration postmortem, the hydrogel covers the parietal and visceral peritoneum with a thin, soft layer. In the subsequent in vivo experiments, 14 healthy rats are subjected to intraperitoneal injection with the hydrogel. Fourteen and 28 days after implantation, the animals are euthanized. Intraperitoneal exposure to the hydrogel is not resulted in significant weight loss or discomfort. Moreover, no macroscopic adverse effects or signs of organ damage are detected. In several intra-abdominal tissues, vacuolated macrophages are found indicating a physiological degradation of the synthetic hydrogel. This study demonstrates that the supramolecular hydrogel is safe for intraperitoneal application and that the hydrogel shows good tissue compatibility in rats.
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Affiliation(s)
- Anne G W E Wintjens
- Department of Surgery, Maastricht University Medical Center+, Maastricht, 6202AZ, The Netherlands
- NUTRIM - School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, 6211LK, The Netherlands
| | | | - Kaatje Lenaerts
- Department of Surgery, Maastricht University Medical Center+, Maastricht, 6202AZ, The Netherlands
- NUTRIM - School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, 6211LK, The Netherlands
| | - Hong Liu
- Department of Surgery, Maastricht University Medical Center+, Maastricht, 6202AZ, The Netherlands
- NUTRIM - School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, 6211LK, The Netherlands
| | | | - Sebastiaan van Steensel
- Department of Surgery, Maastricht University Medical Center+, Maastricht, 6202AZ, The Netherlands
| | - Marion J Gijbels
- NUTRIM - School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, 6211LK, The Netherlands
- Department of Pathology, Maastricht University Medical Center+, Maastricht, 6202AZ, The Netherlands
- Department of Medical Biochemistry, Experimental Vascular Biology, Amsterdam Cardiovascular Sciences, Amsterdam Infection and Immunity, Amsterdam University Medical Center, Amsterdam, 1081HV, The Netherlands
| | - Ignace H J T de Hingh
- GROW - School for Oncology and Reproduction, Maastricht University, Maastricht, 6211LK, The Netherlands
- Department of Surgery, Catharina Hospital Eindhoven, Eindhoven, 5623EJ, The Netherlands
| | - Patricia Y W Dankers
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, 5612AE, The Netherlands
- Department of Biomedical Engineering, Laboratory of Chemical Biology, Eindhoven University of Technology, Eindhoven, 5612AE, The Netherlands
| | - Nicole D Bouvy
- Department of Surgery, Maastricht University Medical Center+, Maastricht, 6202AZ, The Netherlands
- Department of Medical Biochemistry, Experimental Vascular Biology, Amsterdam Cardiovascular Sciences, Amsterdam Infection and Immunity, Amsterdam University Medical Center, Amsterdam, 1081HV, The Netherlands
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Pourmadadi M, Ghaemi A, Shaghaghi M, Rahdar A, Pandey S. Cabazitaxel-nano delivery systems as a cutting-edge for cancer therapy. J Drug Deliv Sci Technol 2023. [DOI: 10.1016/j.jddst.2023.104338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
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Li J, Yin J, Ramakrishna S, Ji D. Smart Mask as Wearable for Post-Pandemic Personal Healthcare. BIOSENSORS 2023; 13:205. [PMID: 36831971 PMCID: PMC9953568 DOI: 10.3390/bios13020205] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 01/26/2023] [Accepted: 01/27/2023] [Indexed: 06/18/2023]
Abstract
A mask serves as a simple external barrier that protects humans from infectious particles from poor air conditions in the surrounding environment. As an important personal protective equipment (PPE) to protect our respiratory system, masks are able not only to filter pathogens and dust particles but also to sense, reflect or even respond to environmental conditions. This smartness is of particular interest among academia and industries due to its potential in disease detection, health monitoring and caring aspects. In this review, we provide an overlook of the current air filtration strategies used in masks, from structural designs to integrated functional modules that empower the mask's ability to sense and transfer physiological or environmental information to become smart. Specifically, we discussed recent developments in masks designed to detect macroscopic physiological signals from the wearer and mask-based disease diagnoses, such as COVID-19. Further, we propose the concept of next-generation smart masks and the requirements from material selection and function design perspectives that enable masks to interact and play crucial roles in health-caring wearables.
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Affiliation(s)
- Jingcheng Li
- Centre for Nanotechnology and Sustainability, Department of Mechanical Engineering, National University of Singapore, Singapore 117081, Singapore
| | - Jing Yin
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215021, China
| | - Seeram Ramakrishna
- Centre for Nanotechnology and Sustainability, Department of Mechanical Engineering, National University of Singapore, Singapore 117081, Singapore
| | - Dongxiao Ji
- College of Textiles, Donghua University, Shanghai 201620, China
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Dispersion Performances and Fluorescent Behaviors of Naphthalic Anhydride Doped in Poly(acrylic acid) Frameworks for pH-Sensitive Ibuprofen Delivery via Fractal Evolution. Polymers (Basel) 2023; 15:polym15030596. [PMID: 36771896 PMCID: PMC9921450 DOI: 10.3390/polym15030596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/14/2023] [Accepted: 01/19/2023] [Indexed: 01/26/2023] Open
Abstract
The pH-responsive fluorescent P(1,8-naphthalic anhydride (NA)-acrylic acid (AA)) matrix was successfully prepared by a doping method using poly(acrylic acid) (PAA) as a pH-sensitive polymer and NA as a fluorescent tracer. The fluorescent behaviors of the used NA dispersed in PAA frameworks were demonstrated based on fractal features combined with various characterizations, such as small-angle X-ray scattering (SAXS) patterns, photoluminescence (PL) spectra, scanning electron microscope (SEM) images, thermogravimetry (TG) profiles, Fourier transform infrared (FT-IR) spectroscopy, and time-resolved decays. The effects of NA-doping on the representative fluorescent P(NA-AA) were investigated, in which the fluorescent performance of the doped NA was emphasized. The results indicated that aggregated clusters of the doped NA were gradually serious with an increase in NA doping amount or extension of NA doping time, accompanied by an increase in mass fractal dimension (Dm) values. Meanwhile, the doped NA presented stable fluorescent properties during the swelling-shrinking process of PAA. Ibuprofen (IBU) was used as a model drug, and fractal evolutions of the obtained P(NA-AA) along with the drug loading and releasing behaviors were evaluated via SAXS patterns, in which the drug-loaded P(NA-AA) presented surface fractal (Ds) characteristics, while the Dm value varied from 2.94 to 2.58 during sustained drug-release in pH 2.0, indicating occurrences of its structural transformation from dense to loose with extension of IBU-releasing time. Finally, the cytotoxicity and cellular uptake behaviors of the obtained P(NA-AA) were preliminarily explored. These demonstrations revealed that the resultant P(NA-AA) should be a potential intelligent-responsive drug carrier for targeted delivery.
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Kalakoo MM, Heydarinasab A, Moniri E, Panahi HA, Khoshneviszadeh R. Preparation and Characterization of the Molybdenum Disulfide Nanosheets Coated with Poly‐(NVCL‐co‐AGE))/MA for the Anticancer Drug Delivery Light. ChemistrySelect 2021. [DOI: 10.1002/slct.202102401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Mina Mohammadi Kalakoo
- Department of Chemical Engineering Science and Research Branch Islamic Azad University Tehran Iran
| | - Amir Heydarinasab
- Department of Chemical Engineering Science and Research Branch Islamic Azad University Tehran Iran
| | - Elham Moniri
- Department of Chemistry Varamin (Pishva) Branch Islamic Azad University Varamin Iran
| | - Homayon Ahmad Panahi
- Department of Chemistry Central Tehran Branch Islamic Azad University Tehran Iran
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Yadav P, Jain J, Sherje AP. Recent advances in nanocarriers-based drug delivery for cancer therapeutics: A review. REACT FUNCT POLYM 2021. [DOI: 10.1016/j.reactfunctpolym.2021.104970] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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7
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Santoso B, Turner PR, Hanton LR, Moratti SC. Preparation, Properties and Cell Biocompatibility of Room Temperature LCST-Hydrogels Based on Thermoresponsive PEO Stars. Gels 2021; 7:gels7030084. [PMID: 34287296 PMCID: PMC8293143 DOI: 10.3390/gels7030084] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 06/28/2021] [Accepted: 07/02/2021] [Indexed: 12/23/2022] Open
Abstract
A series of star and linear polymers based on a poly(ethylene oxide) core and poly(diethylene glycol ethyl ether acrylate) outer arms were synthesised by atom-transfer radical polymerization. The polydispersity of the polymers were low, showing good control of initiation and growth. They all showed lower critical solution (LCST) behaviour, and at 30% concentration most gelled at or below room temperature. The behaviour depended on the number and length of the arms, with the polymers with longer arms gelling at a lower temperature and producing stiffer gels. The shear modulus of the gels varied between 1 and 48 kPa, with the gelling temperature varying between 16 and 23 °C. Attempted cell cultures with the polymers proved unsuccessful, which was determined to be due to the high concentration of polymers needed for gelling.
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Segiet D, Stockmann A, Sadowski J, Katzenberg F, Tiller JC. Insights in the Thermal Volume Transition of Poly(2‐oxazoline) Hydrogels. MACROMOL CHEM PHYS 2021. [DOI: 10.1002/macp.202100157] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Dominik Segiet
- Biomaterials & Polymer Science, Department of Biochemical and Chemical Engineering TU Dortmund 44221 Dortmund Germany
| | - Annika Stockmann
- Biomaterials & Polymer Science, Department of Biochemical and Chemical Engineering TU Dortmund 44221 Dortmund Germany
| | - Jan Sadowski
- Biomaterials & Polymer Science, Department of Biochemical and Chemical Engineering TU Dortmund 44221 Dortmund Germany
| | - Frank Katzenberg
- Biomaterials & Polymer Science, Department of Biochemical and Chemical Engineering TU Dortmund 44221 Dortmund Germany
| | - Joerg C. Tiller
- Biomaterials & Polymer Science, Department of Biochemical and Chemical Engineering TU Dortmund 44221 Dortmund Germany
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Intelligent Polymers, Fibers and Applications. Polymers (Basel) 2021; 13:polym13091427. [PMID: 33925249 PMCID: PMC8125737 DOI: 10.3390/polym13091427] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/22/2021] [Accepted: 04/25/2021] [Indexed: 12/21/2022] Open
Abstract
Intelligent materials, also known as smart materials, are capable of reacting to various external stimuli or environmental changes by rearranging their structure at a molecular level and adapting functionality accordingly. The initial concept of the intelligence of a material originated from the natural biological system, following the sensing–reacting–learning mechanism. The dynamic and adaptive nature, along with the immediate responsiveness, of the polymer- and fiber-based smart materials have increased their global demand in both academia and industry. In this manuscript, the most recent progress in smart materials with various features is reviewed with a focus on their applications in diverse fields. Moreover, their performance and working mechanisms, based on different physical, chemical and biological stimuli, such as temperature, electric and magnetic field, deformation, pH and enzymes, are summarized. Finally, the study is concluded by highlighting the existing challenges and future opportunities in the field of intelligent materials.
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Keller S, Teora SP, Boujemaa M, Wilson DA. Exploring New Horizons in Liquid Compartmentalization via Microfluidics. Biomacromolecules 2021; 22:1759-1769. [PMID: 33835788 PMCID: PMC8154250 DOI: 10.1021/acs.biomac.0c01796] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Spatial organization of cellular processes is crucial to efficiently regulate life's essential reactions. Nature does this by compartmentalization, either using membranes, such as the cell and nuclear membrane, or by liquid-like droplets formed by aqueous liquid-liquid phase separation. Aqueous liquid-liquid phase separation can be divided in two different phenomena, associative and segregative phase separation, of which both are studied for their membraneless compartmentalization abilities. For centuries, segregative phase separation has been used for the extraction and purification of biomolecules. With the emergence of microfluidic techniques, further exciting possibilities were explored because of their ability to fine-tune phase separation within emulsions of various compositions and morphologies and achieve one of the simplest forms of compartmentalization. Lately, interest in aqueous liquid-liquid phase separation has been revived due to the discovery of membraneless phases within the cell. In this Perspective we focus on segregative aqueous phase separation, discuss the theory of this interesting phenomenon, and give an overview of the evolution of aqueous phase separation in microfluidics.
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Affiliation(s)
- Shauni Keller
- Institute of Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - Serena P Teora
- Institute of Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - Moussa Boujemaa
- Institute of Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - Daniela A Wilson
- Institute of Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
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11
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Metal-Organic Framework-Based Stimuli-Responsive Polymers. JOURNAL OF COMPOSITES SCIENCE 2021. [DOI: 10.3390/jcs5040101] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Metal-organic framework (MOF) based stimuli-responsive polymers (coordination polymers) exhibit reversible phase-transition behavior and demonstrate attractive properties that are capable of altering physical and/or chemical properties upon exposure to external stimuli, including pH, temperature, ions, etc., in a dynamic fashion. Thus, their conformational change can be imitated by the adsorption/desorption of target analytes (guest molecules), temperature or pressure changes, and electromagnetic field manipulation. MOF-based stimuli responsive polymers have received great attention due to their advanced optical properties and variety of applications. Herein, we summarized some recent progress on MOF-based stimuli-responsive polymers (SRPs) classified by physical and chemical responsiveness, including temperature, pressure, electricity, pH, metal ions, gases, alcohol and multi-targets.
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12
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Dennis JM, Savage AM, Mrozek RA, Lenhart JL. Stimuli‐responsive mechanical properties in polymer glasses: challenges and opportunities for defense applications. POLYM INT 2020. [DOI: 10.1002/pi.6154] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Joseph M Dennis
- United States Army Research Laboratory Aberdeen Proving Ground Adelphi MD USA
| | - Alice M Savage
- United States Army Research Laboratory Aberdeen Proving Ground Adelphi MD USA
| | - Randy A Mrozek
- United States Army Research Laboratory Aberdeen Proving Ground Adelphi MD USA
| | - Joseph L Lenhart
- United States Army Research Laboratory Aberdeen Proving Ground Adelphi MD USA
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Sim T, Lim C, Hoang NH, Shin Y, Kim JC, Park JY, Her J, Lee ES, Youn YS, Oh KT. An On-Demand pH-Sensitive Nanocluster for Cancer Treatment by Combining Photothermal Therapy and Chemotherapy. Pharmaceutics 2020; 12:E839. [PMID: 32887273 PMCID: PMC7558381 DOI: 10.3390/pharmaceutics12090839] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 08/23/2020] [Accepted: 08/28/2020] [Indexed: 12/14/2022] Open
Abstract
Combination therapy is considered to be a promising strategy for improving the therapeutic efficiency of cancer treatment. In this study, an on-demand pH-sensitive nanocluster (NC) system was prepared by the encapsulation of gold nanorods (AuNR) and doxorubicin (DOX) by a pH-sensitive polymer, poly(aspartic acid-graft-imidazole)-PEG, to enhance the therapeutic effect of chemotherapy and photothermal therapy. At pH 6.5, the NC systems formed aggregated structures and released higher drug amounts while sustaining a stable nano-assembly, structured with less systemic toxicity at pH 7.4. The NC could also increase antitumor efficacy as a result of improved accumulation and release of DOX from the NC system at pHex and pHen with locally applied near-infrared light. Therefore, an NC system would be a potent strategy for on-demand combination treatment to target tumors with less systemic toxicity and an improved therapeutic effect.
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Affiliation(s)
- Taehoon Sim
- Department of Pharmaceutical Sciences, College of Pharmacy, Chung-Ang University, 221 Heukseok dong, Dongjak-gu, Seoul 06974, Korea; (T.S.); (C.L.); (N.H.H.); (Y.S.); (J.C.K.); (J.Y.P.); (J.H.)
| | - Chaemin Lim
- Department of Pharmaceutical Sciences, College of Pharmacy, Chung-Ang University, 221 Heukseok dong, Dongjak-gu, Seoul 06974, Korea; (T.S.); (C.L.); (N.H.H.); (Y.S.); (J.C.K.); (J.Y.P.); (J.H.)
| | - Ngoc Ha Hoang
- Department of Pharmaceutical Sciences, College of Pharmacy, Chung-Ang University, 221 Heukseok dong, Dongjak-gu, Seoul 06974, Korea; (T.S.); (C.L.); (N.H.H.); (Y.S.); (J.C.K.); (J.Y.P.); (J.H.)
| | - Yuseon Shin
- Department of Pharmaceutical Sciences, College of Pharmacy, Chung-Ang University, 221 Heukseok dong, Dongjak-gu, Seoul 06974, Korea; (T.S.); (C.L.); (N.H.H.); (Y.S.); (J.C.K.); (J.Y.P.); (J.H.)
| | - Jae Chang Kim
- Department of Pharmaceutical Sciences, College of Pharmacy, Chung-Ang University, 221 Heukseok dong, Dongjak-gu, Seoul 06974, Korea; (T.S.); (C.L.); (N.H.H.); (Y.S.); (J.C.K.); (J.Y.P.); (J.H.)
| | - June Yong Park
- Department of Pharmaceutical Sciences, College of Pharmacy, Chung-Ang University, 221 Heukseok dong, Dongjak-gu, Seoul 06974, Korea; (T.S.); (C.L.); (N.H.H.); (Y.S.); (J.C.K.); (J.Y.P.); (J.H.)
| | - Jaewon Her
- Department of Pharmaceutical Sciences, College of Pharmacy, Chung-Ang University, 221 Heukseok dong, Dongjak-gu, Seoul 06974, Korea; (T.S.); (C.L.); (N.H.H.); (Y.S.); (J.C.K.); (J.Y.P.); (J.H.)
| | - Eun Seong Lee
- Department of Biotechnology, The Catholic University of Korea, 43 Jibong-ro, Bucheon-si, Gyeonggi-do 14662, Korea;
| | - Yu Seok Youn
- School of Pharmacy, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Korea;
| | - Kyung Taek Oh
- Department of Pharmaceutical Sciences, College of Pharmacy, Chung-Ang University, 221 Heukseok dong, Dongjak-gu, Seoul 06974, Korea; (T.S.); (C.L.); (N.H.H.); (Y.S.); (J.C.K.); (J.Y.P.); (J.H.)
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Jana S, Uchman M. Poly(2-oxazoline)-based stimulus-responsive (Co)polymers: An overview of their design, solution properties, surface-chemistries and applications. Prog Polym Sci 2020. [DOI: 10.1016/j.progpolymsci.2020.101252] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Abou-ElNour M, Soliman ME, Skouras A, Casettari L, Geneidi AS, Ishak RAH. Microparticles-in-Thermoresponsive/Bioadhesive Hydrogels as a Novel Integrated Platform for Effective Intra-articular Delivery of Triamcinolone Acetonide. Mol Pharm 2020; 17:1963-1978. [PMID: 32271590 DOI: 10.1021/acs.molpharmaceut.0c00126] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Intra-articular (IA) injection of thermoresponsive hydrogels coupled with microparticles (MPs) possess the benefit of sustaining the anti-inflammatory drug effect within the joint cavity for rheumatoid arthritis treatment. Star-shaped thermoresponsive poly(polyethylene glycol) methacrylate [Poly(PEGMA)] copolymers were synthesized using free radical polymerization technique and fully characterized. Triamcinolone acetonide (TA)-loaded PLA/mPEG-PDL MPs, previously optimized, were integrated into the synthesized copolymer solutions at various concentrations and tested for their gelation temperatures. The MPs-in-hydrogel formulations were characterized using scanning electron microscope (SEM), viscosity measurements, ex vivo bioadhesion, and in vitro release studies. The anti-inflammatory effect of integrated systems was assessed in adjuvant-induced monoarthritic rat knee joints and compared to Kenacort and TA-loaded MPs. Two copolymers were successfully synthesized; G-1 = poly(PEGMA188-ME-co-PEGMA475-ME) and G-2 = poly(PEGMA246-EE-co-PEGMA475-ME). Using the tube inversion technique, the gel formation was found dependent on copolymer concentration. An irreversible aggregation was obtained at copolymer concentrations ≤10% (w/v), while a gel was formed at 20 and 30% (w/v) of both copolymers upon increasing temperature. The MP-hydrogel formulations were optimized at 20 and 30% (w/v) of G-1 and G-2 with gelation temperatures of 33 and 37 °C, respectively. SEM images revealed the porous microstructures of hydrogels and their adsorption on MP surfaces. The integrated formulas showed pseudoplastic behaviors, while the bioadhesion study confirmed their bioadhesiveness on excised cartilage. The in vitro release study confirmed drug sustainment from MPs-hydrogels compared to MPs. In vivo studies proved the superiority of MP-in-hydrogels in treatment of induced arthritis, relative to Kenacort and MPs alone, suggesting the applicability of this integrated platform in IA drug delivery.
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Affiliation(s)
- May Abou-ElNour
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Monazzamet Elwehda Elafrikeya Street, Abbaseyya, Cairo 11566, Egypt
| | - Mahmoud E Soliman
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Monazzamet Elwehda Elafrikeya Street, Abbaseyya, Cairo 11566, Egypt
| | - Athanasios Skouras
- Department of Life Sciences, School of Sciences, European University Cyprus, 1516 Nicosia, Cyprus
| | - Luca Casettari
- Department of Biomolecular Sciences, School of Pharmacy, University of Urbino, Piazza Rinascimento, 6, 61029 Urbino, Pesaro and Urbino, Italy
| | - Ahmed S Geneidi
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Monazzamet Elwehda Elafrikeya Street, Abbaseyya, Cairo 11566, Egypt
| | - Rania A H Ishak
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Monazzamet Elwehda Elafrikeya Street, Abbaseyya, Cairo 11566, Egypt
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Buten C, Kortekaas L, Ravoo BJ. Design of Active Interfaces Using Responsive Molecular Components. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1904957. [PMID: 31573115 DOI: 10.1002/adma.201904957] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 09/07/2019] [Indexed: 06/10/2023]
Abstract
Responsive interfaces are interfaces that show a defined and reversible change in physical properties in response to external stimuli. Typically, responsive interfaces result from the immobilization of responsive molecular components at the interface that translate a nanoscale signal into a macroscopic effect. Responsive interfaces can also be obtained if the topology of the interface can be reversibly changed using an external stimulus. As the surface of any material is its connection to the environment, responsive interfaces provide opportunities for interactive materials which are not only able to change properties upon demand, but also sense their environment and act autonomously. The application of responsive molecular components at interfaces, however, requires chemical and physical compatibility with the material surface of interest, posing a challenge not least in the retention of the responsive functionality. The state of the art in "active" interfaces which display responsive wettability, permeability, or adhesion is discussed, with a particular emphasis on microscale and nanoscale patterning since patterned interfaces can give rise to unique material properties. Finally, perspectives in the development of responsive interfaces, as well as promising approaches for bypassing the most prominent challenges are discussed.
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Affiliation(s)
- Christoph Buten
- Center for Soft Nanoscience and Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Busso-Peus-Straße 10, 48149, Münster, Germany
| | - Luuk Kortekaas
- Center for Soft Nanoscience and Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Busso-Peus-Straße 10, 48149, Münster, Germany
| | - Bart Jan Ravoo
- Center for Soft Nanoscience and Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Busso-Peus-Straße 10, 48149, Münster, Germany
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17
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Kohl K. Comparison of Dynamic Light Scattering and Rheometrical Methods to Determine the Gel Point of a Radically Polymerized Hydrogel under Mechanical Shear. MICROMACHINES 2020; 11:mi11050462. [PMID: 32354108 PMCID: PMC7281437 DOI: 10.3390/mi11050462] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 04/16/2020] [Accepted: 04/27/2020] [Indexed: 11/29/2022]
Abstract
The phase transition of nanocomposite hydrogels made of N-isopropylacrylamide (NIPAm) and clay (Laponite® XLS) was investigated under mechanical shear influencing the gelation. The hydrogels were synthesized by free radical polymerization. For the processing of cross-linked gels, the phase transition (liquid–solid) and its dependence on mechanical stress are of paramount importance. On the one hand, the determination of the gel point (tg) is possible with rheometry and, on the other hand, with dynamic light scattering (DLS). With rotational rheometry, by identifying the abrupt increase of viscosity, the gel point is evaluated. The DSL is an alternative method to rheometry, to investigate hydrogels under the action of the shear flow, to make results comparable to the rheometric investigations, with and without shear. Experimental parameters were chosen based on preparatory work to obtain comparable results regarding the determination of the gel point of a radically polymerized NIPAm hydrogel.
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Affiliation(s)
- Katinka Kohl
- Chair of Magnetofluiddynamics, Measuring and Automation Technology, Technische Universität Dresden, 01069 Dresden, Germany
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18
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Gupta S, Singh A, Matsumi N. Controlled Phase Behavior of Thermally Sensitive Poly( N-isopropylacrylamide/ionic liquid) with Embedded Au Nanoparticles. ACS OMEGA 2019; 4:20923-20930. [PMID: 31867482 PMCID: PMC6921266 DOI: 10.1021/acsomega.9b01826] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 10/08/2019] [Indexed: 06/02/2023]
Abstract
We have synthesized a series of poly(N-isopropylacrylamide/ionic liquid) with deposited Au nanoparticles. The size of the nanoparticle range was varied from 10 to 35 nm, and these were characterized by transmission electron microscopy analysis. Ionic liquids (IL) were chosen by varying the polymerizable unit to be both in cationic (allyl) and anionic (acrylate) moiety. One-pot polymerization was done with N-isopropylacrylamide and IL using ammonium persulphate as the initiator, to which were added already prepared Au NPs. These thermally sensitive composites formed, possessed reversible swelling/deswelling abilities in water, and demonstrated a reversible visible phase transition, which was detected by differential scanning calorimetric measurements. The lower critical solution temperature (LCST) showed dependency on the size of nanoparticles and the IL independently. It was seen that the LCST of PNIPAM-based composite films can be tuned from 32 °C to a range of 23-67 °C by choosing the desired Au NP size, its concentration and kind of IL.
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19
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Huang H, Qi X, Chen Y, Wu Z. Thermo-sensitive hydrogels for delivering biotherapeutic molecules: A review. Saudi Pharm J 2019; 27:990-999. [PMID: 31997906 PMCID: PMC6978621 DOI: 10.1016/j.jsps.2019.08.001] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 08/03/2019] [Indexed: 12/13/2022] Open
Abstract
To date, a variety of delivery systems based on organic or inorganic materials have been investigated. Among them, hydrogels have become one of the most promising field in drug delivery system due to their unique properties. Temperature-sensitive hydrogels, which gelation at physiological temperature, gift the delivery system with excellent spatial and temporal control, and have a widely application in drug delivery, tissue engineering, imaging, and wound dressing. This review provides a brief overview on the concept and classification of temperature-sensitive hydrogels, and covers the application of temperature-sensitive gel systems in delivery of biotherapeutic molecules.
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Affiliation(s)
- Haiqin Huang
- Key Laboratory of Modern Chinese Medicines, China Pharmaceutical University, Nanjing 210009, PR China
| | - Xiaole Qi
- Key Laboratory of Modern Chinese Medicines, China Pharmaceutical University, Nanjing 210009, PR China
| | - Yanhua Chen
- Department of Pharmacy, Wuxi Children’s Hospital, Wuxi 214000, PR China
| | - Zhenghong Wu
- Key Laboratory of Modern Chinese Medicines, China Pharmaceutical University, Nanjing 210009, PR China
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20
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Sim T, Han SM, Lim C, Won WR, Lee ES, Youn YS, Oh KT. A pH-Sensitive Polymer for Cancer Targeting Prepared by One-Step Modulation of Functional Side Groups. Macromol Res 2019. [DOI: 10.1007/s13233-019-7112-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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21
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22
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Jalili K, Abbasi F, Behboodpour L. In situ probing of switchable nanomechanical properties of responsive high-density polymer brushes on poly(dimethylsiloxane): An AFM nanoindentation approach. J Mech Behav Biomed Mater 2019; 93:118-129. [PMID: 30785077 DOI: 10.1016/j.jmbbm.2019.02.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 01/27/2019] [Accepted: 02/03/2019] [Indexed: 12/01/2022]
Abstract
Nanomechanical characteristics of end grafted polymer brushes were studied by AFM based, colloidal probe nanoindentation measurements. A high-density polymer brush of poly(2-hydroxyethyl methacrylate) (PHEMA) was precisely prepared on the surface of a flexible poly(dimethylsiloxane) (PDMS) substrate oxidized in ultraviolet/ozone (UVO). Exposure times less than 10min resulted in laterally homogeneous oxidized surfaces, characterized by a SiOx thickness ∼35nm and an increased modulus up to 9MPa, as shown by AFM nanoindentation measurements. We have demonstrated that a high surface density of up to ∼0.63chains/nm2 of the well-defined PHEMA brushes can be grown from the surface of oxidized PDMS by surface-initiated atom transfer radical polymerization (SI-ATRP) from trimethoxysilane derivatives mixed-SAM. The reversible nanomechanical changes of PHEMA layer between extended (hydrated state) and collapsed (dehydrated state) chain upon immersing in selective and non-selective solvents were investigated by in situ AFM nanoindentation analysis in liquid environments. The elastic modulus derived from force-indentation curves obtained for swollen PHEMA grafted chains in water was estimated to be equal 2.7±0.2MPa, which is almost two orders of magnitude smaller than the modulus of dry PHEMA brush. Additionally, under cyclohexane immersion, the modulus of the PHEMA layer decreased by one order of magnitude, indicating a more compact chain packing at the PDMS surface.
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Affiliation(s)
- K Jalili
- Institute of Polymeric Materials, Sahand University of Technology, P.O.Box 51335-1996, Tabriz, Iran; Faculty of Polymer Engineering, Sahand University of Technology, Tabriz, Iran; Max Planck Institute for Polymer Research, 10 Ackermannweg, 55128 Mainz, Germany.
| | - F Abbasi
- Institute of Polymeric Materials, Sahand University of Technology, P.O.Box 51335-1996, Tabriz, Iran; Faculty of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
| | - L Behboodpour
- Institute of Polymeric Materials, Sahand University of Technology, P.O.Box 51335-1996, Tabriz, Iran; Faculty of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
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Janovák L, Turcsányi Á, Bozó É, Deák Á, Mérai L, Sebők D, Juhász Á, Csapó E, Abdelghafour MM, Farkas E, Dékány I, Bari F. Preparation of novel tissue acidosis-responsive chitosan drug nanoparticles: Characterization and in vitro release properties of Ca2+ channel blocker nimodipine drug molecules. Eur J Pharm Sci 2018; 123:79-88. [DOI: 10.1016/j.ejps.2018.07.031] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 05/17/2018] [Accepted: 07/15/2018] [Indexed: 11/30/2022]
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Sim T, Lim C, Cho YH, Lee ES, Youn YS, Oh KT. Development of pH-sensitive nanogels for cancer treatment using crosslinked poly(aspartic acid- graft-imidazole)- block-poly(ethylene glycol). J Appl Polym Sci 2018. [DOI: 10.1002/app.46268] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Taehoon Sim
- College of Pharmacy; Chung-Ang University; 84 Heukseok-Ro, Dongjak, Seoul 06974 South Korea
| | - Chaemin Lim
- College of Pharmacy; Chung-Ang University; 84 Heukseok-Ro, Dongjak, Seoul 06974 South Korea
| | - Young Hun Cho
- College of Pharmacy; Chung-Ang University; 84 Heukseok-Ro, Dongjak, Seoul 06974 South Korea
| | - Eun Seong Lee
- Department of Biotechnology; The Catholic University of Korea; 43-1 Yeokgok 2-dong, Wonmi, Bucheon Gyeonggi-do 14662 South Korea
| | - Yu Seok Youn
- School of Pharmacy; Sungkyunkwan University; 300 Cheoncheon-dong, Jangan-gu, Suwon 16419 South Korea
| | - Kyung Taek Oh
- College of Pharmacy; Chung-Ang University; 84 Heukseok-Ro, Dongjak, Seoul 06974 South Korea
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25
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Recent advance of pH-sensitive nanocarriers targeting solid tumors. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2017. [DOI: 10.1007/s40005-017-0349-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Jimenez‐Vergara AC, Lewis J, Hahn MS, Munoz‐Pinto DJ. An improved correlation to predict molecular weight between crosslinks based on equilibrium degree of swelling of hydrogel networks. J Biomed Mater Res B Appl Biomater 2017; 106:1339-1348. [DOI: 10.1002/jbm.b.33942] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 05/23/2017] [Accepted: 05/29/2017] [Indexed: 11/11/2022]
Affiliation(s)
| | - John Lewis
- Department of Engineering ScienceTrinity UniversitySan Antonio Texas78212
| | - Mariah S. Hahn
- Biomedical Engineering DepartmentRensselaer Polytechnic InstituteTroy New York12180
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27
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Das E, Matsumura K. Tunable phase-separation behavior of thermoresponsive polyampholytes through molecular design. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28440] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Esha Das
- School of Materials Science; Japan Advanced Institute of Science and Technology; 1-1 Asahidai Nomi Ishikawa 923-1292 Japan
| | - Kazuaki Matsumura
- School of Materials Science; Japan Advanced Institute of Science and Technology; 1-1 Asahidai Nomi Ishikawa 923-1292 Japan
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28
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Koçum C, Bulmuş V, Pişkin E. Imaging of Poly(N-Isopropyl Acrylamide-Co-Acrylic Acid)–Amino Acid Conjugates with Scanning Tunnelling Microscopy. J BIOACT COMPAT POL 2016. [DOI: 10.1106/088391102027132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
A copolymer of N-isopropyl acrylamide (NIPAAm) and acrylic acid (AAc), Mw 1,400, AAc content of 3.1 mmol carboxylic acid groups per gram of the copolymer, was synthesised by a free radical polymerisation. Mono-, di-, and tripeptide conjugates of this copolymer were prepared by using the carboxylprotected alanine, glycine and serine, with a water-soluble carbodiimide. Scanning tunnelling microscope images of the conjugates were taken after each synthesis step. The average length and width of the copolymer with no amino acid were measured as 17 and 2.5 nm, respectively. The lengths of the mono-, di-, and tri-peptide conjugates were similar to the length of the copolymer chain while the widths were in the range of 3.0–3.2, 3.5–4.0 and 4.2–4.4 nm, respectively.
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Affiliation(s)
| | - Volga Bulmuş
- Chemical Engineering Department and Bioengineering Division, Hacettepe University, Beytepe, 06532 Ankara, Turkey
| | - Erhan Pişkin
- Chemical Engineering Department and Bioengineering Division, Hacettepe University, Beytepe, 06532 Ankara, Turkey
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29
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Abstract
A temperature-responsive drug delivery system that is soluble in aqueous solutions below its phase transition temperature but hydrophobically collapsing and aggregating at higher temperatures was prepared. A ternary copolymer of N-isopropylmethacrylamide, N-propylmethacrylamide and 4-nitrophenyl N-methacryloylglycylglycinate was synthesized. The reaction of the 4-nitrophenyl ester groups with hydrazine resulted in a polymer hydrazide which enabled the attachment of doxorubicin (DOX) via a pH-sensitive hydrazone bond. The system exhibited phase separation in aqueous solutions at a temperature of about 41'C and released free DOX at pH 5.0 at a rate higher by one order of magnitude than at pH 7.4. In combination with local hyperthermia, the system is expected to be valuable for the delivery of chemotherapeutic agents in the treatment of solid tumors. The relation between the temperature of the phase transition of the system and the cloud point temperature (CPT) as well as the necessity to distinguish between the CPT and the lower critical solution temperature (LCST) is discussed and the factors influencing the results of determination of the CPT (its definition, concentration of the polymer solution, rate of heating, presence of cosolutes, chemical structure of polymer and its heterogeneity) are analysed in detail.
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Affiliation(s)
- V. Chtryt
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovskj Sq. 2, 162 06 Prague 6, Czech Republic
| | - K. Ulbrich
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovskj Sq. 2, 162 06 Prague 6, Czech Republic
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30
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Katz E. Modified Electrodes and Electrochemical Systems Switchable by Temperature Changes. ELECTROANAL 2016. [DOI: 10.1002/elan.201600235] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Evgeny Katz
- Department of Chemistry and Biomolecular Science; Clarkson University; Potsdam NY 13699-5810 USA
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31
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Samanta S, Bogdanowicz DR, Lu HH, Koberstein JT. Polyacetals: Water-Soluble, pH-Degradable Polymers with Extraordinary Temperature Response. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02304] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Sanjoy Samanta
- Department
of Chemical Engineering and ‡Department of Biomedical Engineering, Columbia University, New York, New York 10027, United States
| | - Danielle R. Bogdanowicz
- Department
of Chemical Engineering and ‡Department of Biomedical Engineering, Columbia University, New York, New York 10027, United States
| | - Helen H. Lu
- Department
of Chemical Engineering and ‡Department of Biomedical Engineering, Columbia University, New York, New York 10027, United States
| | - Jeffrey T. Koberstein
- Department
of Chemical Engineering and ‡Department of Biomedical Engineering, Columbia University, New York, New York 10027, United States
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32
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Novel delivery approaches for cancer therapeutics. J Control Release 2015; 219:248-268. [PMID: 26456750 DOI: 10.1016/j.jconrel.2015.09.067] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 09/09/2015] [Accepted: 09/30/2015] [Indexed: 02/07/2023]
Abstract
Currently, a majority of cancer treatment strategies are based on the removal of tumor mass mainly by surgery. Chemical and physical treatments such as chemo- and radiotherapies have also made a major contribution in inhibiting rapid growth of malignant cells. Furthermore, these approaches are often combined to enhance therapeutic indices. It is widely known that surgery, chemo- and radiotherapy also inhibit normal cells growth. In addition, these treatment modalities are associated with severe side effects and high toxicity which in turn lead to low quality of life. This review encompasses novel strategies for more effective chemotherapeutic delivery aiming to generate better prognosis. Currently, cancer treatment is a highly dynamic field and significant advances are being made in the development of novel cancer treatment strategies. In contrast to conventional cancer therapeutics, novel approaches such as ligand or receptor based targeting, triggered release, intracellular drug targeting, gene delivery, cancer stem cell therapy, magnetic drug targeting and ultrasound-mediated drug delivery, have added new modalities for cancer treatment. These approaches have led to selective detection of malignant cells leading to their eradication with minimal side effects. Lowering multi-drug resistance and involving influx transportation in targeted drug delivery to cancer cells can also contribute significantly in the therapeutic interventions in cancer.
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33
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Basak S, Punetha VD, Bisht G, Bisht SS, Sahoo NG, Cho JW. Recent Trends of Polymer-Protein Conjugate Application in Biocatalysis: A Review. POLYM REV 2015. [DOI: 10.1080/15583724.2014.971371] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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34
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Jain K, Vedarajan R, Watanabe M, Ishikiriyama M, Matsumi N. Tunable LCST behavior of poly(N-isopropylacrylamide/ionic liquid) copolymers. Polym Chem 2015. [DOI: 10.1039/c5py00998g] [Citation(s) in RCA: 150] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tunable LCST of PNIPAM–IL copolymers.
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Affiliation(s)
- Kamiya Jain
- School of Materials Science
- Japan Advanced Institute of Science and Technology
- Nomi
- Japan
| | - Raman Vedarajan
- School of Materials Science
- Japan Advanced Institute of Science and Technology
- Nomi
- Japan
| | | | | | - Noriyoshi Matsumi
- School of Materials Science
- Japan Advanced Institute of Science and Technology
- Nomi
- Japan
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35
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Preparation and characterisation of thermoresponsive nanogels for smart antibacterial fabrics. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 40:135-41. [DOI: 10.1016/j.msec.2014.03.033] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 03/05/2014] [Accepted: 03/17/2014] [Indexed: 11/21/2022]
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36
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Enhanced in vitro transdermal delivery of caffeine using a temperature- and pH-sensitive nanogel, poly(NIPAM-co-AAc). Int J Pharm 2013; 453:630-40. [DOI: 10.1016/j.ijpharm.2013.05.042] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2012] [Revised: 05/09/2013] [Accepted: 05/16/2013] [Indexed: 11/21/2022]
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37
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Choi BC, Choi S, Leckband DE. Poly(N-isopropyl acrylamide) brush topography: dependence on grafting conditions and temperature. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:5841-5850. [PMID: 23600842 DOI: 10.1021/la400066d] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The topography of poly (N-isopropyl acrylamide) brushes end-grafted from initiator-terminated monolayers was imaged by atomic force microscopy, as a function of the area per chain and of solvent quality. Measurements were done in air and in water, below and above the lower critical solution temperature. At low grafting densities and molecular weights, area-averaged ellipsometry measurements did not detect changes in the volume of water-swollen, end-grafted polymer films above the lower critical solution temperature. However, atomic force microscopy images revealed surface features that suggest the formation of lateral aggregates or "octopus micelles". At high grafting densities and molecular weights, the films collapsed uniformly, as detected by both AFM imaging and ellipsometry. These findings reconcile in part prior results suggesting that some poly(N-isopropyl acrylamide) chains do not collapse in poor solvent, and they also reveal more complex collapse behavior above the lower critical solution temperature than is commonly assumed. This behavior would influence the ability to tune the functional properties of poly(N-isopropyl acrylamide) coatings.
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Affiliation(s)
- B-C Choi
- Department of Chemical and Biomolecular Engineering, University of Illinois, Urbana, Illinois 61801, United States
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38
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39
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Byambaa B, Konno T, Ishihara K. Cell adhesion control on photoreactive phospholipid polymer surfaces. Colloids Surf B Biointerfaces 2012; 99:1-6. [DOI: 10.1016/j.colsurfb.2011.08.029] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2011] [Revised: 08/30/2011] [Accepted: 08/31/2011] [Indexed: 11/29/2022]
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40
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Zhong Z, Dijkstra PJ, Feijen J. Controlled synthesis of biodegradable lactide polymers and copolymers using novel in situ generated or single-site stereoselective polymerization initiators. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 15:929-46. [PMID: 15318802 DOI: 10.1163/1568562041271066] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Polylactides and their copolymers are key biodegradable polymers used widely in biomedical, pharmaceutical and ecological applications. The development of synthetic pathways and catalyst/initiator systems to produce pre-designed polylactides, as well as the fundamental understanding of the polymerization reactions, has continuously been an important topic. Here, we will address the recent advances in the ring-opening polymerization of lactides, with an emphasis on the highly versatile in situ generated initiator systems and single-site stereoselective initiators. The in situ generated initiators including in situ formed yttrium, calcium and zinc alkoxides all have been shown to bring about a rapid and living polymerization of lactides under mild conditions, which facilitated the preparation of a variety of advanced lactide-based biomaterials. For example, well-defined di- and tri-block copolymers consisting of hydrophilic poly(ethylene glycol) blocks and hydrophobic polyester blocks, which form novel biodegradable polymersomes or biodegradable thermosensitive hydrogels, have been prepared. In the past few years, significant progress has also been made in the area of stereoselective polymerization of lactides. This new generation of initiators has enabled the production of polylactide materials with novel microstructures and/or properties, such as heterotactic (--RRSSRRSSRRSS--) polylactide, crystalline syndiotactic (--RSRSRSRSRSRS--) polylactide and isotactic stereoblock (--Rn Sn Rn Sn--) polylactide, exhibiting a high melting temperature. The recently developed polymerizations using in situ generated initiators and stereoselective polymerizations have no doubt opened a brand-new avenue for the design and exploration of polylactides and their copolymers.
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Affiliation(s)
- Zhiyuan Zhong
- Department of Polymer Chemistry and Biomaterials, and Institute for Biomedical Technology, Faculty of Science and Technology, University of Twente, AE Enschede, The Netherlands
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41
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42
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Nicoletta FP, Cupelli D, Formoso P, De Filpo G, Colella V, Gugliuzza A. Light responsive polymer membranes: a review. MEMBRANES 2012; 2:134-97. [PMID: 24957966 PMCID: PMC4021883 DOI: 10.3390/membranes2010134] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Revised: 02/04/2012] [Accepted: 02/16/2012] [Indexed: 12/04/2022]
Abstract
In recent years, stimuli responsive materials have gained significant attention in membrane separation processes due to their ability to change specific properties in response to small external stimuli, such as light, pH, temperature, ionic strength, pressure, magnetic field, antigen, chemical composition, and so on. In this review, we briefly report recent progresses in light-driven materials and membranes. Photo-switching mechanisms, valved-membrane fabrication and light-driven properties are examined. Advances and perspectives of light responsive polymer membranes in biotechnology, chemistry and biology areas are discussed.
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Affiliation(s)
| | - Daniela Cupelli
- Department of Pharmaceutical Sciences, Università della Calabria, I-87036 Rende (CS), Italy.
| | - Patrizia Formoso
- Department of Pharmaceutical Sciences, Università della Calabria, I-87036 Rende (CS), Italy.
| | - Giovanni De Filpo
- Department of Chemistry, Università della Calabria, I-87036 Rende (CS), Italy.
| | - Valentina Colella
- Department of Pharmaceutical Sciences, Università della Calabria, I-87036 Rende (CS), Italy.
| | - Annarosa Gugliuzza
- Institute on Membrane Technology-National Council Research, ITM-CNR, I-87030 Rende (CS), Italy.
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43
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Synthesis and characterization of thermosensitive interpenetrating polymer networks based on N-isopropylacrylamide/N-acryloxysuccinimide, crosslinked with polylysine, grafted onto polypropylene. Radiat Phys Chem Oxf Engl 1993 2012. [DOI: 10.1016/j.radphyschem.2011.11.053] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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44
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Xue C, Yonet-Tanyeri N, Brouette N, Sferrazza M, Braun PV, Leckband DE. Protein adsorption on poly(N-isopropylacrylamide) brushes: dependence on grafting density and chain collapse. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:8810-8. [PMID: 21662243 PMCID: PMC3412611 DOI: 10.1021/la2001909] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The protein resistance of poly(N-isopropylacrylamide) brushes grafted from silicon wafers was investigated as a function of the chain molecular weight, grafting density, and temperature. Above the lower critical solution temperature (LCST) of 32 °C, the collapse of the water-swollen chains, determined by ellipsometry, depends on the grafting density and molecular weight. Ellipsometry, radio assay, and fluorescence imaging demonstrated that, below the lower critical solution temperature, the brushes repel protein as effectively as oligoethylene oxide-terminated monolayers. Above 32 °C, very low levels of protein adsorb on densely grafted brushes, and the amounts of adsorbed protein increase with decreasing brush-grafting-densities. Brushes that do not exhibit a collapse transition also bind protein, even though the chains remain extended above the LCST. These findings suggest possible mechanisms underlying protein interactions with end-grafted poly(N-isopropyl acrylamide) brushes.
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Affiliation(s)
- Changying Xue
- Department of Chemical and Biomolecular Engineering, 600 South Mathews Laboratory, Urbana, IL 61801
| | - Nihan Yonet-Tanyeri
- Department of Material Science and Engineering, University of Illinois, Urbana, IL 61801
| | - Nicolas Brouette
- Département de Physique, Faculté des Sciences, Université Libre de Bruxelles, Boulevard du Triomphe, CP223, B-1050 Bruxelles, Belgique
| | - Michele Sferrazza
- Département de Physique, Faculté des Sciences, Université Libre de Bruxelles, Boulevard du Triomphe, CP223, B-1050 Bruxelles, Belgique
| | - Paul V. Braun
- Department of Material Science and Engineering, University of Illinois, Urbana, IL 61801
| | - Deborah E. Leckband
- Department of Chemical and Biomolecular Engineering, 600 South Mathews Laboratory, Urbana, IL 61801
- Department of Chemistry, University of Illinois, Urbana, IL 61801
- To whom correspondence should be addressed: Phone: 217-244-0793, Fax: 217-333-5052,
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Falco EE, Coates EE, Li E, Roth JS, Fisher JP. Fabrication and characterization of porous EH scaffolds and EH-PEG bilayers. J Biomed Mater Res A 2011; 97:264-71. [PMID: 21442727 DOI: 10.1002/jbm.a.33052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2009] [Revised: 12/20/2010] [Accepted: 01/03/2011] [Indexed: 11/05/2022]
Abstract
Biomaterials made from synthetic polymers are becoming more pervasive in the medical field. Synthetic polymers are particularly advantageous as their chemical and mechanical properties can be easily tailored to a specific application. This work characterizes polymer scaffolds derived from the cyclic acetal monomer 5-ethyl-5-(hydroxymethyl)-β,β-dimethyl-1,3-dioxane-2-ethanol diacrylate (EHD). Both porous scaffolds and bilayer scaffolds based upon the EHD monomer were fabricated, and the resulting scaffolds' degradation and mechanical properties were studied. The results showed that by modifying the architecture of an EH scaffold, either by adding a porous network or a poly(ethylene glycol) (PEG) coating, the degradation and Young's modulus of the biomaterial can be significant altered. However, results also indicated that these architectural modifications can be accomplished without a significant loss in the flexural strength of the scaffold. Therefore, we suggest that porous EH scaffolds, and particularly porous EH-PEG bilayers, may be especially useful in dynamic tissue environments due to their advantageous architectural and mechanical properties.
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Affiliation(s)
- Erin E Falco
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, Maryland, USA
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Hoffman AS, Stayton PS, Shimoboji T, Chen G, Ding Z, Chilkoti A, Long C, Miura M, Chen J, Park T, Monji N, Cole CA, Milton Harris J, Nakamae K. Conjugates of stimuli-responsive polymers and biomolecules: Random and site-specific conjugates of temperature-sensitive polymers and proteins. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/masy.19971180173] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Solaro R, Chiellini EE, Giannasi D, Morganti F, Chiellini E. Multifunctional polymeric materials for biomedical applications. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/masy.19971180179] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Falco EE, Wang MO, Thompson JA, Chetta JM, Yoon DM, Li EZ, Kulkami MM, Shah S, Pandit A, Roth JS, Fisher JP. Porous EH and EH-PEG scaffolds as gene delivery vehicles to skeletal muscle. Pharm Res 2011; 28:1306-16. [PMID: 21246395 DOI: 10.1007/s11095-010-0358-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2010] [Accepted: 12/17/2010] [Indexed: 11/30/2022]
Abstract
PURPOSE Synthetic biomaterials are widely used in an attempt to control the cellular behavior of regenerative tissues. This can be done by altering the chemical and physical properties of the polymeric scaffold to guide tissue repair. This paper addresses the use of a polymeric scaffold (EH network) made from the cyclic acetal monomer, 5-ethyl-5-(hydroxymethyl)-β,β-dimethyl-1,3-dioxane-2-ethanol diacrylate (EHD), as a release device for a therapeutic plasmid encoding for an insulin-like growth factor-1 green fluorescent protein fusion protein (IGF-1 GFP). METHODS Scaffolds were designed to have different porous architectures, and the impact of these architectures on plasmid release was determined. We hypothesized that IGF-1 could be delivered more effectively using a porous scaffold to allow for the release of IGF-1. RESULTS We showed that by altering the number of pores exposed to the surface of the network, faster plasmid loading and release were achieved. In addition, the IGF-1 GFP plasmids were found to be effective in producing IGF-1 and GFP within human skeletal muscle myoblast cell cultures. CONCLUSIONS This work aims to show the utility of EH biomaterials for plasmid delivery for potentially localized skeletal muscle regeneration.
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Affiliation(s)
- Erin E Falco
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, Maryland 20742, USA
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Abstract
Porous biomaterials have been widely used as scaffolds in tissue engineering and cell-based therapies. The release of biological agents from conventional porous scaffolds is typically governed by molecular diffusion, material degradation, and cell migration, which do not allow for dynamic external regulation. We present a new active porous scaffold that can be remotely controlled by a magnetic field to deliver various biological agents on demand. The active porous scaffold, in the form of a macroporous ferrogel, gives a large deformation and volume change of over 70% under a moderate magnetic field. The deformation and volume variation allows a new mechanism to trigger and enhance the release of various drugs including mitoxantrone, plasmid DNA, and a chemokine from the scaffold. The porous scaffold can also act as a depot of various cells, whose release can be controlled by external magnetic fields.
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Malal R, Malal M, Cohn D. Surface grafting thermoresponsive PEO-PPO-PEO chains. J Tissue Eng Regen Med 2010; 5:394-401. [DOI: 10.1002/term.330] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2009] [Accepted: 04/27/2010] [Indexed: 11/09/2022]
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