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Koide H, Saito K, Yoshimatsu K, Chou B, Hoshino Y, Yonezawa S, Oku N, Asai T, Shea KJ. Cooling-induced, localized release of cytotoxic peptides from engineered polymer nanoparticles in living mice for cancer therapy. J Control Release 2023; 355:745-759. [PMID: 36804558 DOI: 10.1016/j.jconrel.2023.02.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/31/2023] [Accepted: 02/13/2023] [Indexed: 02/23/2023]
Abstract
Temperature-responsive polymers are often characterized by an abrupt change in the degree of swelling brought about by small changes in temperature. Polymers with a lower critical solution temperature (LCST) in particular, are important as drug and gene delivery vehicles. Drug molecules are taken up by the polymer in their solvent swollen state below their LCST. Increasing the temperature above the LCST, typically physiological temperatures, results in desolvation of polymer chains and microstructure collapse. The trapped drug is released slowly by passive diffusion through the collapsed polymer network. Since diffusion is dependent on many variables, localizing and control of the drug delivery rate can be challenging. Here, we report a fundamentally different approach for the rapid (seconds) tumor-specific delivery of a biomacromolecular drug. A copolymer nanoparticle (NP) was engineered with affinity for melittin, a peptide with potent anti-cancer activity, at physiological temperature. Intravenous injection of the NP-melittin complex results in its accumulation in organs and at the tumor. We demonstrate that by local cooling of the tumor the melittin is rapidly released from the NP-melittin complex. The release occurs only at the cooled tumor site. Importantly, tumor growth was significantly suppressed using this technique demonstrating therapeutically useful quantities of the drug can be delivered. This work reports the first example of an in vivo site-specific release of a macromolecular drug by local cooling for cancer therapy. In view of the increasing number of cryotherapeutic devices for in vivo applications, this work has the potential to stimulate cryotherapy for in vivo drug delivery.
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Affiliation(s)
- Hiroyuki Koide
- Department of Medical Biochemistry, Graduate school of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka, Shizuoka 422-8526, Japan.
| | - Kazuhiro Saito
- Department of Medical Biochemistry, Graduate school of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka, Shizuoka 422-8526, Japan
| | - Keiichi Yoshimatsu
- Department of Chemistry, Missouri State University, 901 South National Avenue, Springfield, MO 65897, USA; Department of Chemistry, University of California Irvine, Irvine, CA 92697, USA.
| | - Beverly Chou
- Department of Chemistry, University of California Irvine, Irvine, CA 92697, USA
| | - Yu Hoshino
- Department of Applied Chemistry, Kyushu University, 744 Motooka, Fukuoka 819-0395, Japan
| | - Sei Yonezawa
- Department of Medical Biochemistry, Graduate school of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka, Shizuoka 422-8526, Japan
| | - Naoto Oku
- Department of Medical Biochemistry, Graduate school of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka, Shizuoka 422-8526, Japan; Laboratory of Biomedical and Analytical Sciences, Faculty of Pharma Sciences, Teikyo University, 2-11-1 Kaga, Itabashi, Tokyo 173-8605, Japan
| | - Tomohiro Asai
- Department of Medical Biochemistry, Graduate school of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka, Shizuoka 422-8526, Japan
| | - Kenneth J Shea
- Department of Chemistry, University of California Irvine, Irvine, CA 92697, USA.
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2
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Design and Optimization of pH‐Responsive Chitosan‐Coated Zn‐Carboxymethyl Cellulose Hydrogel Bead Carriers for Amoxicillin Trihydrate Delivery. ChemistrySelect 2022. [DOI: 10.1002/slct.202200471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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3
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Bhowmik M, Dharmalingam K, Halder S, Muthukumar P, Anandalakshmi R. Fabrication, characterization, and evaluation of desiccant doped hydrogel films for potential
air‐dehumidification
applications. J Appl Polym Sci 2022. [DOI: 10.1002/app.51607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Mrinal Bhowmik
- School of Energy Science and Engineering Indian Institute of Technology Guwahati Assam India
| | - Koodalingam Dharmalingam
- Advance Energy & Materials Systems Laboratory, Department of Chemical Engineering Indian Institute of Technology Guwahati Assam India
| | - Sayan Halder
- Advance Energy & Materials Systems Laboratory, Department of Chemical Engineering Indian Institute of Technology Guwahati Assam India
| | - Palanisamy Muthukumar
- School of Energy Science and Engineering Indian Institute of Technology Guwahati Assam India
- Department of Mechanical Engineering Indian Institute of Technology Guwahati Assam India
| | - Ramalingam Anandalakshmi
- Advance Energy & Materials Systems Laboratory, Department of Chemical Engineering Indian Institute of Technology Guwahati Assam India
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Growing antifouling fluorinated polymer brushes on polyvinyl alcohol hydrogel surface via g-C3N4@InVO4 catalyzed surface-initiated photo atom transfer radical polymerization. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126598] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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5
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Abstract
Hydrogels are 3D crosslinked polymer matrices having a colossal tendency to imbibe water and exhibit swelling under physiological conditions without deformation in their hydrophilic network. Hydrogels being biodegradable and biocompatible, gained consideration due to some unique characteristics: responsiveness to external stimuli (pH, temperature) and swelling in aqueous solutions. Hydrogels offer a promising option for various pharmaceutical and biomedical applications, including tissue-specific drug delivery at a predetermined, controlled rate. This article presents a brief review of the recent and fundamental advances to design hydrogels, the swelling and deswelling mechanism, various crosslinking methods and their use as an intelligent carrier in the pharmaceutical field. Recent applications of hydrogels are also briefly discussed and exemplified.
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Mohamed MA, Fallahi A, El-Sokkary AM, Salehi S, Akl MA, Jafari A, Tamayol A, Fenniri H, Khademhosseini A, Andreadis ST, Cheng C. Stimuli-responsive hydrogels for manipulation of cell microenvironment: From chemistry to biofabrication technology. Prog Polym Sci 2019; 98. [DOI: 10.1016/j.progpolymsci.2019.101147] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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7
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Matsumoto K, Sakikawa N, Miyata T. Thermo-responsive gels that absorb moisture and ooze water. Nat Commun 2018; 9:2315. [PMID: 29899417 PMCID: PMC5998054 DOI: 10.1038/s41467-018-04810-8] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 05/16/2018] [Indexed: 11/17/2022] Open
Abstract
The water content of thermo-responsive hydrogels can be drastically altered by small changes in temperature because their polymer chains change from hydrophilic to hydrophobic above their low critical solution temperature (LCST). In general, such smart hydrogels have been utilized in aqueous solutions or in their wet state, and no attempt has been made to determine the phase-transition behavior of the gels in their dried states. Here we demonstrate an application of the thermo-responsive behavior of an interpenetrating polymer network (IPN) gel comprising thermo-responsive poly(N-isopropylacrylamide) and hydrophilic sodium alginate networks in their dried states. The dried IPN gel absorbs considerable moisture from air at temperatures below its LCST and oozes the absorbed moisture as liquid water above its LCST. These phenomena provide energy exchange systems in which moisture from air can be condensed to liquid water using the controllable hydrophilic/hydrophobic properties of thermo-responsive gels with a small temperature change. Most smart hydrogels are used in their wet state and determination of their phase transition behaviour in the dried state is lacking. Here the authors investigate the thermo-responsive behaviour of an interpenetrating polymer network gel comprising of poly(N-isopropylacrylamide) and sodium alginate networks in their dried states.
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Affiliation(s)
- Kazuya Matsumoto
- Department of Chemistry and Materials Engineering, Kansai University, 3-3-35, Yamate-cho, Suita, Osaka, 564-8680, Japan
| | - Nobuki Sakikawa
- Health & Environment Systems Division, SHARP Corporation, 3-1-72, Kitakamei-cho, Yao, Osaka, 581-8585, Japan
| | - Takashi Miyata
- Department of Chemistry and Materials Engineering, Kansai University, 3-3-35, Yamate-cho, Suita, Osaka, 564-8680, Japan. .,Organization for Research and Development of Innovative Science and Technology, Kansai University, 3-3-35, Yamate-cho, Suita, Osaka, 564-8680, Japan.
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8
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Pardini FM, Faccia PA, Pardini OR, Amalvy JI. Thermal and pH dual responsive polyurethane/2-(diisopropylamino)ethyl methacrylate hybrids: Synthesis, characterization, and swelling behavior. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2018. [DOI: 10.1080/1023666x.2017.1416998] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Francisco M. Pardini
- Grupo (Nano) Materiales Poliméricos, Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), CCT La Plata CONICET, Universidad Nacional de La Plata, La Plata, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - Paula A. Faccia
- Grupo (Nano) Materiales Poliméricos, Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), CCT La Plata CONICET, Universidad Nacional de La Plata, La Plata, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - Oscar R. Pardini
- Grupo (Nano) Materiales Poliméricos, Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), CCT La Plata CONICET, Universidad Nacional de La Plata, La Plata, Argentina
- Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CICPBA), La Plata, Argentina
| | - Javier I. Amalvy
- Grupo (Nano) Materiales Poliméricos, Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), CCT La Plata CONICET, Universidad Nacional de La Plata, La Plata, Argentina
- Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CICPBA), La Plata, Argentina
- Facultad Regional La Plata, Centro de Investigación y Desarrollo en Ciencia y Tecnología de Materiales (CITEMA), Universidad Tecnológica Nacional, Berisso, Argentina
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9
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Boyaci T, Orakdogen N. Multi-faced investigation for pH-sensitivity and solvent polarity in highly charged thermo-responsive hydro- and cryogels with strongly dissociated groups: A comparative evaluation of physico-chemical properties. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2017.11.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Ye H, Liu Y, Gao L, Du T, Jia Y. Effects of solution pH on ion distribution and drug release behaviors of a weak polyelectrolyte hydrogel. POLYM INT 2017. [DOI: 10.1002/pi.5429] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hui Ye
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials; Shandong University; Jinan China
| | - Yabo Liu
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials; Shandong University; Jinan China
| | - Linlin Gao
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials; Shandong University; Jinan China
| | - Tianxiang Du
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials; Shandong University; Jinan China
| | - Yuxi Jia
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials; Shandong University; Jinan China
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11
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Pino-Ramos VH, Ramos-Ballesteros A, López-Saucedo F, López-Barriguete JE, Varca GHC, Bucio E. Radiation Grafting for the Functionalization and Development of Smart Polymeric Materials. Top Curr Chem (Cham) 2016; 374:63. [DOI: 10.1007/s41061-016-0063-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 08/03/2016] [Indexed: 10/21/2022]
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12
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Abdekhodaie M, Cheng J, Wu X. Effect of formulation factors on the bioactivity of glucose oxidase encapsulated chitosan–alginate microspheres: In vitro investigation and mathematical model prediction. Chem Eng Sci 2015. [DOI: 10.1016/j.ces.2014.11.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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13
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Meléndez-Ortiz HI, Varca GHC, Lugão AB, Bucio E. Smart Polymers and Coatings Obtained by Ionizing Radiation: Synthesis and Biomedical Applications. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/ojpchem.2015.53003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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14
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Abstract
Biomolecule-sensitive hydrogels that undergo volumetric changes in response to a target biomolecule such as glucose and proteins have become increasingly important because of their potential applications as smart biomaterials for constructing self-regulated drug-delivery systems (DDSs) and diagnostic systems. However, there have not been so many studies on biomolecule-sensitive hydrogels, due to difficulties in combining biomolecular recognition abilities with responsive functions within a hydrogel. This chapter introduces some strategies for designing biomolecule-sensitive hydrogels that exhibit swelling/shrinking behavior or sol-gel transition in response to the concentration of a target biomolecule. A standard strategy is to combine the molecular recognition events of biomolecules such as enzymes, lectins and antibodies with responsiveness of pH- and temperature-sensitive polymers. Another strategy uses biomolecular complexes like those of lectin-saccharide and antigen-antibody as dynamic cross-links of hydrogel networks. Designs of biomolecule-sensitive hydrogels will contribute significantly to develop smart DDSs in which specific amounts of drugs can be administered with monitoring specific biomolecules as diagnostic signals for several physiological changes. This chapter provides an overview of important researches about biomolecule-sensitive hydrogels for DDSs and diagnosis, focusing on saccharides, proteins, DNAs, etc. as target biomolecules.
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Affiliation(s)
- Takashi Miyata
- Department of Chemistry and Materials Engineering Kansai University, Suita, Osaka 564-8680 Japan
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15
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Ghasdian N, Church E, Cottam AP, Hornsby K, Leung MY, Georgiou TK. Novel “core-first” star-based quasi-model amphiphilic polymer networks. RSC Adv 2013. [DOI: 10.1039/c3ra42836b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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16
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Karacan P, Cakmak H, Okay O. Swelling behavior of physical and chemical DNA hydrogels. J Appl Polym Sci 2012. [DOI: 10.1002/app.38550] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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17
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Hasirci V, Vrana E, Zorlutuna P, Ndreu A, Yilgor P, Basmanav FB, Aydin E. Nanobiomaterials: a review of the existing science and technology, and new approaches. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 17:1241-68. [PMID: 17176748 DOI: 10.1163/156856206778667442] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Nanotechnology has made great strides forward in the creation of new surfaces, new materials and new forms which also find application in the biomedical field. Traditional biomedical applications started benefiting from the use nanotechnology in an array of areas, such as biosensors, tissue engineering, controlled release systems, intelligent systems and nanocomposites used in implant design. In this manuscript a review of developments in these areas will be provided along with some applications from our laboratories.
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Affiliation(s)
- V Hasirci
- METU, Department of Biological Sciences, Biotechnology Research Unit, Ankara 06531, Turkey.
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18
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Yallapu MM, Jaggi M, Chauhan SC. Design and engineering of nanogels for cancer treatment. Drug Discov Today 2011; 16:457-63. [PMID: 21414419 DOI: 10.1016/j.drudis.2011.03.004] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2010] [Revised: 01/25/2011] [Accepted: 03/08/2011] [Indexed: 11/19/2022]
Abstract
Here, we provide a comprehensive insight into current advances in the use of nanogel-mediated chemotherapy for cancer treatment. Nanogels are composed of cross-linked three-dimensional polymer chain networks that are formed via covalent linkages or self-assembly processes. The porosity between the cross-linked networks of nanogels not only provides an ideal reservoir for loading drugs, oligonucleotides and imaging agents, but also protects them from environmental degradation and hazards. Here, we focus mainly on novel synthetic strategies and key considerations in the design of nanogel-based drug delivery systems for controlled and targeted cancer therapeutic applications.
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Affiliation(s)
- Murali Mohan Yallapu
- Cancer Biology Research Center, Sanford Research/University of South Dakota, Sioux Falls, SD 57104, USA
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20
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Ranjha NM, Ayub G, Naseem S, Ansari MT. Preparation and characterization of hybrid pH-sensitive hydrogels of chitosan-co-acrylic acid for controlled release of verapamil. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2010; 21:2805-2816. [PMID: 20686825 DOI: 10.1007/s10856-010-4134-1] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2009] [Accepted: 07/16/2010] [Indexed: 05/29/2023]
Abstract
In the present work crosslinked hydrogels based on chitosan (CS) and acrylic acid (AA) were prepared by free radical polymerization with various feed compositions using N,N methylenebisacrylamide (MBA) as crosslinking agent. Benzoyl peroxide was used as catalyst. Fourier transform infrared spectra (FTIR) confirmed the formation of the crosslinked hydrogels. This hydrogel is formed due to electrostatic interaction between cationic groups in CS and anionic groups in AA. Prepared hydrogels were used for dynamic and equilibrium swelling studies. For swelling behavior, effect of pH, polymeric and monomeric compositions and degree of crosslinking were investigated. Swelling studies were performed in USP phosphate buffer solutions of varying pH 1.2, 5.5, 6.5 and 7.5. Results showed that swelling increased by increasing AA contents in structure of hydrogels in solutions of higher pH values. This is due to the presence of more carboxylic groups available for ionization. On the other hand by increasing the chitosan content swelling increased in a solution of acidic pH, but this swelling was not significant and it is due to ionization of amine groups present in the structure of hydrogel. Swelling decreased with increase in crosslinking ratio owing to tighter hydrogel structure. Porosity and sol-gel fraction were also measured. With increase in CS and AA contents porosity and gel fraction increased, whereas by increasing MBA content porosity decreased and gel fraction increased. Furthermore, diffusion coefficient (D) and the network parameters i.e., the average molecular weight between crosslinks (M(c)), polymer volume fraction in swollen state (V(2s)), number of repeating units between crosslinks (M(r)) and crosslinking density (q) were calculated using Flory-Rehner theory. Selected samples were loaded with a model drug verapamil. Release of verapamil depends on the ratios of CS/AA, degree of crosslinking and pH of the medium. The release mechanisms were studied by fitting experimental data to model equations and calculating the corresponding parameters. The result showed that the kinetics of drug release from the hydrogels in both pH 1.2 and 7.5 buffer solutions was mainly non-Fickian diffusion.
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21
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Tu H, Qu Y, Hu X, Yin Y, Zheng H, Xu P, Xiong F. Study of the sigmoidal swelling kinetics of carboxymethylchitosan-g-poly(acrylic acid) hydrogels intended for colon-specific drug delivery. Carbohydr Polym 2010. [DOI: 10.1016/j.carbpol.2010.04.086] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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Dini E, Alexandridou S, Kiparissides C. Synthesis and characterization of cross-linked chitosan microspheres for drug delivery applications. J Microencapsul 2010. [DOI: 10.3109/02652040309178076] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- E. Dini
- Department of Chemical Engineering and Chemical Process Engineering Research Institute, Aristotle University of Thessaloniki, P.O. Box 472, 540 06, Thessaloniki, Greece
| | - S. Alexandridou
- Department of Chemical Engineering and Chemical Process Engineering Research Institute, Aristotle University of Thessaloniki, P.O. Box 472, 540 06, Thessaloniki, Greece
| | - C. Kiparissides
- Department of Chemical Engineering and Chemical Process Engineering Research Institute, Aristotle University of Thessaloniki, P.O. Box 472, 540 06, Thessaloniki, Greece
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23
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Saeed A, Georget DM, Mayes AG. Synthesis, characterisation and solution thermal behaviour of a family of poly (N-isopropyl acrylamide-co-N-hydroxymethyl acrylamide) copolymers. REACT FUNCT POLYM 2010. [DOI: 10.1016/j.reactfunctpolym.2009.12.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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24
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Etika KC, Cox MA, Grunlan JC. Tailored dispersion of carbon nanotubes in water with pH-responsive polymers. POLYMER 2010. [DOI: 10.1016/j.polymer.2010.02.024] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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25
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26
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Yao B, Chen ZW, Ni C, Ni ZB, Liu XY, Chen MQ. Studies on syntheses and dynamic swelling of pH-sensitive macroporous poly(N-isopropylacrylamide-co-acrylic acid) hydrogels. POLYMER SCIENCE SERIES A 2010. [DOI: 10.1134/s0965545x10010037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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27
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Gao DG, Ma JZ, Guo HQ. Synthesis of pH-responsive hydrophobically-modified hydrogels of poly(methacrylic acid-co-diallylammonium salt) in aqueous solution. NEW J CHEM 2010. [DOI: 10.1039/b9nj00592g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Sui XC, Shi Y, Fu ZF. Novel Degradable Polymer Networks Containing Acetal Components and Well-Defined Backbones. Aust J Chem 2010. [DOI: 10.1071/ch10207] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A novel copolymer network was successfully prepared by combining the reversible addition–fragmentation chain-transfer polymerization (RAFT) and addition reaction between hydroxyl and vinyloxy groups. 2-Hydroxyethyl methacrylate (HEMA) and methyl methacrylate (MMA) were copolymerized in 1,4-dioxane with 2,2′-azobisisobutyronitrile as initiator and 2-(ethoxycarbonyl)prop-2-yl dithiobenzoate as a RAFT agent. The molecular weight of poly(HEMA-co-MMA) was well controlled and the polydispersity was low. The hydroxyl group from the HEMA unit in the copolymer underwent an addition reaction with 1,4-cyclohexanedimethanol divinyl ether in the presence of pyridinium p-toluenesulfonate, generating a copolymer network with an acetal component in the crosslinking segment. The crosslinking time depended on the molar ratio of HEMA and MMA in the poly(HEMA-co-MMA). After being treated in strong acid, the copolymer network was able to be degraded owing to the acetal structure, but the backbone chains of poly(HEMA-co-MMA) remained intact.
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Wahrmund J, Kim JW, Chu LY, Wang C, Li Y, Fernandez-Nieves A, Weitz DA, Krokhin A, Hu Z. Swelling Kinetics of a Microgel Shell. Macromolecules 2009. [DOI: 10.1021/ma901362p] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Joshua Wahrmund
- Department of Physics, University of North Texas, Denton, Texas 76203
| | - Jin-Woong Kim
- School of Engineering and Applied Sciences, Department of Physics, Harvard University, Cambridge, Massachusetts 02138
- Amore-Pacific R&D Center, 314-1, Bora-dong, Giheung-gu, Yongin-si, Gyeonggi-Do, 446-729 Korea
| | - Liang-Yin Chu
- School of Engineering and Applied Sciences, Department of Physics, Harvard University, Cambridge, Massachusetts 02138
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | | | - Yong Li
- Kimberly-Clark Corporation, Neenah, Wisconsin 54957
| | - Alberto Fernandez-Nieves
- School of Engineering and Applied Sciences, Department of Physics, Harvard University, Cambridge, Massachusetts 02138
- School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332
| | - David A. Weitz
- School of Engineering and Applied Sciences, Department of Physics, Harvard University, Cambridge, Massachusetts 02138
| | - Arkadii Krokhin
- Department of Physics, University of North Texas, Denton, Texas 76203
| | - Zhibing Hu
- Department of Physics, University of North Texas, Denton, Texas 76203
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30
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Abdekhodaie M, Wu X. Modeling of a glucose sensitive composite membrane for closed-loop insulin delivery. J Memb Sci 2009. [DOI: 10.1016/j.memsci.2009.02.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Szczupak B, Ryder AG, Togashi DM, Rochev YA, Gorelov AV, Glynn TJ. Measuring the micro-polarity and hydrogen-bond donor/acceptor ability of thermoresponsive N-isopropylacrylamide/N-tert-butylacrylamide copolymer films using solvatochromic indicators. APPLIED SPECTROSCOPY 2009; 63:442-449. [PMID: 19366511 DOI: 10.1366/000370209787944343] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Thin polymer films are important in many areas of biomaterials research, biomedical devices, and biological sensors. The accurate in situ measurement of multiple physicochemical properties of thin polymer films is critical in understanding biocompatibility, polymer function, and performance. In this work we demonstrate a facile spectroscopic methodology for accurately measuring the micro-polarity and hydrogen-bond donor/acceptor ability for a series of relatively hydrophilic thermoresponsive copolymers. The micro-polarity of the N-isopropylacrylamide (NIPAM) and N-tert-butylacrylamide (NtBA) co-polymers was evaluated by means of the E(T)(30), alpha, beta, and pi empirical solvatochromic polarity parameters. The data shows that increasing the NtBA fraction in the dry copolymer film reduces polarity and hydrogen-bonding ability. Within the Kamlet-Taft polarity framework, the NIPAM/NtBA copolymer films are strong hydrogen-bond acceptors, strongly dipolar/polarizable, and rather moderate hydrogen-bond donors. This characterization provides a more comprehensive physicochemical description of polymers, which aids the interpretation of film performance. Comparison of the measured E(T)(30) values with literature data for other water-soluble polymers show that dry NIPAM/NtBA copolymers are slightly more polar than poly(ethylene oxide), less polar than polyvinylalcohol, and approximately the same polarity as poly(N-vinyl-2-pyrrolidone). These findings indicate that this spectroscopic method is a facile, rapid, and nondestructive methodology for measuring polymer properties in situ, suitable for most biomaterials research laboratories.
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Affiliation(s)
- Boguslaw Szczupak
- School of Chemistry, National University of Ireland, Galway, Galway, Ireland
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París R, Barrales-Rienda JM, Quijada-Garrido I. Dynamic swelling of hydrogels based on random terpolymers of N-isopropylacrylamide, methacrylic acid and poly(ethylene glycol) macromonomer. POLYMER 2009. [DOI: 10.1016/j.polymer.2009.02.028] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Mendrek S, Mendrek A, Adler H, Dworak A, Kuckling D. Synthesis and characterization of pH sensitive poly(glycidol)‐
b
‐poly(4‐vinylpyridine) block copolymers. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23276] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sebastian Mendrek
- Fachrichtung Chemie und Lebensmittelchemie, Technische Universität Dresden, D‐01062 Dresden, Germany
- Center of Polymer and Carbon Materials, M. Sklodowskiej‐Curie 34, 41‐819 Zabrze, Poland
| | - Aleksandra Mendrek
- Fachrichtung Chemie und Lebensmittelchemie, Technische Universität Dresden, D‐01062 Dresden, Germany
- Center of Polymer and Carbon Materials, M. Sklodowskiej‐Curie 34, 41‐819 Zabrze, Poland
| | - Hans‐Juergen Adler
- Fachrichtung Chemie und Lebensmittelchemie, Technische Universität Dresden, D‐01062 Dresden, Germany
| | - Andrzej Dworak
- Center of Polymer and Carbon Materials, M. Sklodowskiej‐Curie 34, 41‐819 Zabrze, Poland
| | - Dirk Kuckling
- Department Chemie, Universität Paderborn, Warburgerstrasse 100, D‐33098 Paderborn, Germany
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Lin G, Chang S, Kuo CH, Magda J, Solzbacher F. Free swelling and confined smart hydrogels for applications in chemomechanical sensors for physiological monitoring. SENSORS AND ACTUATORS. B, CHEMICAL 2009; 136:186. [PMID: 20130753 PMCID: PMC2749283 DOI: 10.1016/j.snb.2008.11.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
We investigate thin films of "smart" polymer hydrogels used to convert miniature pressure sensors into novel chemomechanical sensors. In this versatile sensing approach, a smart hydrogel is confined between a porous membrane and the diaphragm of a piezoresistive pressure transducer. An increase in the environmental analyte concentration, as sensed through the pores of the membrane, is detected by measuring the change in pressure exerted by the hydrogel on the pressure transducer diaphragm. We compare the response of such a sensor with the response of a free-swelling hydrogel identical to the one used within the sensor. The sensor and the free hydrogel are observed to have comparable mean response times. However, the time-dependent response curve of the sensor, unlike that of the free hydrogel, is highly asymmetric between swelling and deswelling, with a smaller time constant for deswelling. We also investigate novel methods for increasing sensor sensitivity, such as use of a two-layer membrane with a nanoporous polymer inner layer, and pre-loading of the hydrogel under pressure. In ionic strength response tests, use of an inner membrane increases sensor sensitivity without increasing mean response time, an effect that varies with membrane water fraction.
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Affiliation(s)
- G. Lin
- Department of Materials Science & Engineering, University of Utah, Salt Lake City, Utah 84112, USA
| | - S. Chang
- Department of Materials Science & Engineering, University of Utah, Salt Lake City, Utah 84112, USA
| | - C.-H. Kuo
- Department of Materials Science & Engineering, University of Utah, Salt Lake City, Utah 84112, USA
| | - J. Magda
- Department of Materials Science & Engineering, University of Utah, Salt Lake City, Utah 84112, USA
- Corresponding author. Tel.: +1 11 801 581 7536. E-mail address: (J. Magda)
| | - F. Solzbacher
- Department of Materials Science & Engineering, University of Utah, Salt Lake City, Utah 84112, USA
- Department of Electrical & Computer Engineering, University of Utah, Salt Lake City, Utah 84112, USA
- Department of Bioengineering, University of Utah, Salt Lake City, Utah 84112, USA
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Farmer TG, Edgar TF, Peppas NA. In Vivo Simulations of the Intravenous Dynamics of Submicron Particles of pH-Responsive Cationic Hydrogels in Diabetic Patients. Ind Eng Chem Res 2008; 47:10053-10063. [PMID: 20428328 DOI: 10.1021/ie070957b] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A mathematical model describing glucose-dependent pH swelling and insulin release is developed for pH-sensitive cationic hydrogels in which glucose oxidase and catalase have been immobilized and insulin imbibed. Glucose based swelling and insulin release are simulated for intravenously injected particles at various design conditions. The effects of particle size, the number of injected particles, insulin loading, enzyme loading, monomer functional group loading and pK(a), and hydrogel crosslinking ratio on insulin release and glucose sensitivity are investigated in order to optimally design the device for use. Increased insulin infusion is shown to result from increasing the number of circulating gels, increasing the collapsed particle size, or by decreasing the crosslinking ratio of the system. Release duration is shown to be dependent only upon the particle size and the achievable diffusion coefficient of the system. Glucose sensitivity, as measured by gluconic acid production and by the system pH, are functions of glucose oxidase loading and the concentration and pK(a) of the monomer used in the hydrogel.The necessarily submicron particle size results in very rapid device insulin depletion. When the device is designed without considering constraints, the resulting release profile resembles that of an on/off switching mechanism. Future work will focus on simulations of swelling and release when the device is implanted in an alternative administration site.
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Affiliation(s)
- Terry G Farmer
- Department of Chemical, The University of Texas at Austin, 1 University Station C0400, Austin, TX 78712-0231, USA
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Radiation synthesis of a thermo-pH responsive binary graft copolymer (PP-g-DMAEMA)-g-NIPAAm by a two step method. Polym Bull (Berl) 2008. [DOI: 10.1007/s00289-008-0982-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Georgiou TK, Patrickios CS. Synthesis, characterization, and DNA adsorption studies of ampholytic model conetworks based on cross-linked star copolymers. Biomacromolecules 2007; 9:574-82. [PMID: 18163576 DOI: 10.1021/bm701123s] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Five model conetworks based on cross-linked star ampholytic copolymers were synthesized by group transfer polymerization. The ampholytic copolymers were based on two hydrophilic monomers: the positively ionizable 2-(dimethylamino)ethyl methacrylate (DMAEMA) and the negatively ionizable methacrylic acid (MAA). Ethylene glycol dimethacrylate was used as the cross-linker. These five ampholytic model conetworks were isomers based on equimolar DMAEMA-MAA copolymer stars of different architectures: heteroarm (two), star block (two), and statistical. The two networks based on the homopolymer stars were also synthesized. The MAA units were introduced via the polymerization of tetrahydropyranyl methacrylate and the acid hydrolysis of the latter after network formation. All the precursors to the (co)networks were characterized in terms of their molecular weights using gel permeation chromatography (GPC). The mass of the extractables from the (co)networks was measured and characterized in terms of molecular weight and composition using GPC and proton nuclear magnetic resonance (1H NMR) spectroscopy, respectively. The degrees of swelling (DS) of all the ampholytic conetworks were measured as a function of pH and were found to present a minimum at a pH value which was taken as the isoelectric point, pI. The DS and the pI values did not present a dependence on conetwork architecture. Finally, DNA adsorption studies onto the ampholyte conetworks indicated that DNA binding was governed by electrostatics.
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Affiliation(s)
- Theoni K Georgiou
- Department of Chemistry, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus
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39
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Huang HY, Shaw J, Yip C, Wu XY. Microdomain pH Gradient and Kinetics Inside Composite Polymeric Membranes of pH and Glucose Sensitivity. Pharm Res 2007; 25:1150-7. [DOI: 10.1007/s11095-007-9507-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2007] [Accepted: 11/19/2007] [Indexed: 10/22/2022]
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Griffiths PC, Paul A, Fallis IA, Wellappili C, Murphy DM, Jenkins R, Waters SJ, Nilmini R, Heenan RK, King SM. Derivatizing weak polyelectrolytes—Solution properties, self-aggregation, and association with anionic surfaces of hydrophobically modified poly(ethylene imine). J Colloid Interface Sci 2007; 314:460-9. [PMID: 17602700 DOI: 10.1016/j.jcis.2007.05.082] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2007] [Revised: 05/20/2007] [Accepted: 05/23/2007] [Indexed: 11/22/2022]
Abstract
The physical properties of weak polyelectrolytes may be tailored via hydrophobic modification to exhibit useful properties under appropriate pH and ionic strength conditions as a consequence of the often inherently competing effects of electrostatics and hydrophobicity. Pulsed-gradient spin-echo NMR (PGSE-NMR), electron paramagnetic resonance (EPR), small-angle neutron scattering (SANS) surface tension, fluorescence, and pH titration have been used to examine the solution conformation and aggregation behavior of a series of hydrophobically modified hyperbranched poly(ethylene imine) (PEI) polymers in aqueous solution, and their interaction with sodium dodecylsulfate (SDS). PGSE-NMR gave a particularly insightful picture of the apparent molecular weight distribution. The presence of the hydrophobes led to a lower effective charge on the polymer at any given pH, compared to the (parent) nonmodified samples. Analysis of the SANS data showed that the propensity to form highly elliptical or rod-like aggregates at higher pHs, reflecting both the changes in protonation behavior induced by the hydrophobic modification and an hydrophobic interaction, but that these structures were disrupted with decreasing pH (increasing charge). The parent samples were not surface active yet the hydrophobically modified samples show pronounced surface activity and the presence of small hydrophobic domains. The surface activity increased with an increase in the degree of modification. On addition of SDS, the onset of the formation of polymer/surfactant complexes was insensitive to the degree of modification with the resultant PEI/SDS complexes resembling the size and shape of simple SDS micelles. Indeed, the presence of the SDS effectively nullifies the effects of the hydrophobe. Hydrophobic modification is therefore a viable option to tailor pH dependent properties, whose effects may be removed by the presence of surfactant.
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Affiliation(s)
- Peter C Griffiths
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, UK.
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41
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Structure and swelling-release behaviour of poly(vinyl pyrrolidone) (PVP) and acrylic acid (AAc) copolymer hydrogels prepared by gamma irradiation. Eur Polym J 2007. [DOI: 10.1016/j.eurpolymj.2007.04.016] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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42
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Liang S, Xu J, Weng L, Zhang L, Guo X, Zhang X. Long-Range Self-Governing Motion of Polymer Gel on a Gradiently Charged Insulating Substrate. Chemphyschem 2007; 8:899-905. [PMID: 17366510 DOI: 10.1002/cphc.200600745] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Herein, we report a special poly(vinyl alcohol)/dimethylsulfoxide (PVA/DMSO) gel electromechanical system with great self-governed capability. The system is operated in air by applying a noncontacted DC electric field. When the applied electric field exceeds a certain critical value, the gel exhibits fast and self-governing locomotion on the gradiently charged glass substrate. In contrast to field-controlled gel systems developed earlier, the crawling direction of the gel is independent of the direction of the applied electric field and can be actively controlled. The maximum crawling velocity can reach 3.22 mm s(-1), which is much larger than that of the actuators described earlier. Furthermore, some factors that influence the critical driving electric field and the average crawling speed of the gel were studied. The mechanism analysis indicates that, the self-governing linear motion of the gel is due to the spatially and temporally varying electrostatic interaction between the gel and the applied electric field in response to the gradient change of the charge density and the charge polarity on the substrate.
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Affiliation(s)
- Songmiao Liang
- State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, P. R. China
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43
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Liang S, Xu J, Weng L, Zhang L, Guo X, Zhang X. Electrically induced linear locomotion of polymer gel in air. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/polb.21126] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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44
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Baranovskii VY, Yasina LL, Motyakin MV, Aliev II, Shenkov S, Dimitrov M, Lambov N, Wasserman AM. Molecular mobility in hydrogels based on poly(acrylic acid) and macrodiisocyanates. POLYMER SCIENCE SERIES A 2006. [DOI: 10.1134/s0965545x0612011x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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45
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Kramarenko EY, Philippova OE, Khokhlov AR. Polyelectrolyte networks as highly sensitive polymers. POLYMER SCIENCE SERIES C 2006. [DOI: 10.1134/s1811238206010012] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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46
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Prior-Cabanillas A, Quijada-Garrido I, Frutos G, Barrales-Rienda J. Influence of the swelling history on the swelling kinetics of stimuli-responsive poly[(N-isopropylacrylamide)-co-(methacrylic acid)] hydrogels. POLYMER 2005. [DOI: 10.1016/j.polymer.2004.11.088] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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47
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Madrigal González B, Christie G, Davidson CA, Blyth J, Lowe CR. Divalent metal ion-sensitive holographic sensors. Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2004.03.029] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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48
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49
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Toomey R, Freidank D, Rühe J. Swelling Behavior of Thin, Surface-Attached Polymer Networks. Macromolecules 2004. [DOI: 10.1021/ma034737v] [Citation(s) in RCA: 305] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ryan Toomey
- Institute for Microsystem Technology, University of Freiburg, Georges-Köhler-Allee 103, D-79110 Freiburg, Germany
| | - Daniel Freidank
- Institute for Microsystem Technology, University of Freiburg, Georges-Köhler-Allee 103, D-79110 Freiburg, Germany
| | - Jürgen Rühe
- Institute for Microsystem Technology, University of Freiburg, Georges-Köhler-Allee 103, D-79110 Freiburg, Germany
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