1
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Liu Y, Perera T, Shi Q, Yong Z, Mallawaarachchi S, Fan B, Walker JAT, Lupton CJ, Thang SH, Premaratne M, Cheng W. Thermoresponsive chiral plasmonic nanoparticles. NANOSCALE 2022; 14:4292-4303. [PMID: 35244653 DOI: 10.1039/d1nr08343k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Chiral metallic nanoparticles can exhibit novel plasmonic circular dichroism (PCD) in the ultraviolet and visible range of the electromagnetic spectrum. Here, we investigate how thermoresponsive dielectric nanoenvironments will influence such PCD responses through poly(N-isopropylacrylamide) (PNIPAM) modified chiral gold nanorods (AuNRs). We observed the temperature-dependent chiral plasmonic responses distinctly from unmodified counterparts. As for the modified systems, the PCD peaks for both L-AuNRs and D-AuNRs at 50 °C red shifted simultaneously with enhanced intensities compared to the results at 20 °C. In contrast, the unmodified L-AuNRs and D-AuNRs exhibited no peak shift with reduced intensities. Subsequent simulation and experimental studies demonstrated that the enhanced PCD was attributed to PNIPAM chain collapse causing the increase of the refractive index by expelling minute water out of the corona surrounding chiral plasmonic AuNRs. Notably, such thermoresponsive chiral plasmonic responses are reversible, general, and extendable to other types of chiral plasmonic nanoparticles.
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Affiliation(s)
- Yiyi Liu
- Department of Chemical Engineering, Monash University, Clayton, Victoria 3800, Australia.
| | - Tharaka Perera
- Advanced Computing and Simulation Laboratory (AχL), Department of Electrical and Computer Systems Engineering, Faculty of Engineering, Monash University, Clayton, Victoria 3800, Australia
| | - Qianqian Shi
- Department of Chemical Engineering, Monash University, Clayton, Victoria 3800, Australia.
| | - Zijun Yong
- Department of Chemical Engineering, Monash University, Clayton, Victoria 3800, Australia.
| | - Sudaraka Mallawaarachchi
- Advanced Computing and Simulation Laboratory (AχL), Department of Electrical and Computer Systems Engineering, Faculty of Engineering, Monash University, Clayton, Victoria 3800, Australia
| | - Bo Fan
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Julia Ann-Therese Walker
- Department of Chemical Engineering, Monash University, Clayton, Victoria 3800, Australia.
- Drug Delivery, Disposition and Dynamic, Monash Institute of Pharmaceutical Sciences, Parkville, Victoria 3052, Australia
| | - Christopher J Lupton
- Biomedicine Discovery Institute, Monash University, Clayton, Victoria 3800, Australia
- ARC Centre of Excellence in Advanced Molecular Imaging, Monash University, Clayton, Victoria 3800, Australia
| | - San H Thang
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Malin Premaratne
- Advanced Computing and Simulation Laboratory (AχL), Department of Electrical and Computer Systems Engineering, Faculty of Engineering, Monash University, Clayton, Victoria 3800, Australia
| | - Wenlong Cheng
- Department of Chemical Engineering, Monash University, Clayton, Victoria 3800, Australia.
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Physicochemical characteristics of thermo-responsive gelatin membranes containing carboxymethyl chitosan and poly(N-isopropylacrylamide-co-acrylic acid). JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02534-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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3
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Song X, Zhang Z, Zhu J, Wen Y, Zhao F, Lei L, Phan-Thien N, Khoo BC, Li J. Thermoresponsive Hydrogel Induced by Dual Supramolecular Assemblies and Its Controlled Release Property for Enhanced Anticancer Drug Delivery. Biomacromolecules 2020; 21:1516-1527. [DOI: 10.1021/acs.biomac.0c00077] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xia Song
- Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, Singapore
| | - Zhongxing Zhang
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Singapore 138634, Singapore
| | - Jingling Zhu
- Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, Singapore
| | - Yuting Wen
- Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, Singapore
| | - Feng Zhao
- Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, Singapore
| | - Lijie Lei
- Department of Mechanical Engineering, Faculty of Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore
| | - Nhan Phan-Thien
- Department of Mechanical Engineering, Faculty of Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore
| | - Boo Cheong Khoo
- Department of Mechanical Engineering, Faculty of Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore
| | - Jun Li
- Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, Singapore
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4
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Otsuka C, Wakahara Y, Okabe K, Sakata J, Okuyama M, Hayashi A, Tokuyama H, Uchiyama S. Fluorescent Labeling Method Re-Evaluates the Intriguing Thermoresponsive Behavior of Poly(acrylamide-co-acrylonitrile)s with Upper Critical Solution Temperatures. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00880] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Chie Otsuka
- Research Laboratories, KOSÉ Corporation, 48-18 Sakae-cho, Kita-ku, Tokyo 114-0005, Japan
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yuko Wakahara
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Kohki Okabe
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Juri Sakata
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Masaki Okuyama
- Research Laboratories, KOSÉ Corporation, 48-18 Sakae-cho, Kita-ku, Tokyo 114-0005, Japan
| | - Akinobu Hayashi
- Research Laboratories, KOSÉ Corporation, 48-18 Sakae-cho, Kita-ku, Tokyo 114-0005, Japan
| | - Hidetoshi Tokuyama
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Seiichi Uchiyama
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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Atoufi Z, Kamrava SK, Davachi SM, Hassanabadi M, Saeedi Garakani S, Alizadeh R, Farhadi M, Tavakol S, Bagher Z, Hashemi Motlagh G. Injectable PNIPAM/Hyaluronic acid hydrogels containing multipurpose modified particles for cartilage tissue engineering: Synthesis, characterization, drug release and cell culture study. Int J Biol Macromol 2019; 139:1168-1181. [PMID: 31419553 DOI: 10.1016/j.ijbiomac.2019.08.101] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 08/11/2019] [Accepted: 08/12/2019] [Indexed: 12/25/2022]
Abstract
Novel injectable thermosensitive PNIPAM/hyaluronic acid hydrogels containing various amounts of chitosan-g-acrylic acid coated PLGA (ACH-PLGA) micro/nanoparticles were synthesized and designed to facilitate the regeneration of cartilage tissue. The ACH-PLGA particles were used in the hydrogels to play a triple role: first, the allyl groups on the chitosan-g-acrylic acid shell act as crosslinkers for PNIPAM and improved the mechanical properties of the hydrogel to mimic the natural cartilage tissue. Second, PLGA core acts as a carrier for the controlled release of chondrogenic small molecule melatonin. Third, they could reduce the syneresis of the thermosensitive hydrogel during gelation. The optimum hydrogel with the minimum syneresis and the maximum compression modulus was chosen for further evaluations. This hydrogel showed a great integration with the natural cartilage during the adhesion test, and also, presented an interconnected porous structure in scanning electron microscopy images. Eventually, to evaluate the cytotoxicity, mesenchymal stem cells were encapsulated inside the hydrogel. MTT and Live/Dead assay showed that the hydrogel improved the cells growth and proliferation as compared to the tissue culture polystyrene. Histological study of glycosaminoglycan (GAG) showed that melatonin treatment has the ability to increase the GAG synthesis. Overall, due to the improved mechanical properties, low syneresis, the ability of sustained drug release and also high bioactivity, this injectable hydrogel is a promising material system for cartilage tissue engineering.
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Affiliation(s)
- Zhaleh Atoufi
- Advanced Polymer Materials and Processing Lab, School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Seyed Kamran Kamrava
- ENT and Head & Neck Research Center and Department, The Five Senses Institute, Hazrat Rasoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Seyed Mohammad Davachi
- Soft Tissue Engineering Research Center, Tissue Engineering and Regenerative Medicine Institute, Central Tehran Branch, Islamic Azad University, Tehran, Iran; Department of Food Science, Cornell University, Ithaca, NY, USA
| | - Majid Hassanabadi
- Advanced Polymer Materials and Processing Lab, School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Sadaf Saeedi Garakani
- Skull Base Research Center, The Five Senses Institute, Hazrat Rasoul Akram Hospital, Iran University of Medical Sciences (IUMS), Tehran, Iran; Advanced Polymer Materials and Processing Lab, School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Rafieh Alizadeh
- ENT and Head & Neck Research Center and Department, The Five Senses Institute, Hazrat Rasoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Mohammad Farhadi
- ENT and Head & Neck Research Center and Department, The Five Senses Institute, Hazrat Rasoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Shima Tavakol
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Zohreh Bagher
- ENT and Head & Neck Research Center and Department, The Five Senses Institute, Hazrat Rasoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran.
| | - Ghodratollah Hashemi Motlagh
- Advanced Polymer Materials and Processing Lab, School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran.
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6
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Pautov V, Nekrasova T. Nanosecond dynamics of polymers with complex architecture as studied by polarized luminescence. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.03.051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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7
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Synthesis and characterization of dual responsive sodium alginate-g-acryloyl phenylalanine-poly N -isopropyl acrylamide smart hydrogels for the controlled release of anticancer drug. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2017.12.013] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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8
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Synthesis of high generation thermo-sensitive dendrimers for extraction of rivaroxaban from human fluid and pharmaceutic samples. J Chromatogr A 2018. [DOI: 10.1016/j.chroma.2018.02.050] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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9
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Swift T, Paul N, Swanson L, Katsikogianni M, Rimmer S. Förster Resonance Energy Transfer across interpolymer complexes of poly(acrylic acid) and poly(acrylamide). POLYMER 2017. [DOI: 10.1016/j.polymer.2017.06.069] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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10
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Song X, Zhu JL, Wen Y, Zhao F, Zhang ZX, Li J. Thermoresponsive supramolecular micellar drug delivery system based on star-linear pseudo-block polymer consisting of β-cyclodextrin-poly(N-isopropylacrylamide) and adamantyl-poly(ethylene glycol). J Colloid Interface Sci 2016; 490:372-379. [PMID: 27914336 DOI: 10.1016/j.jcis.2016.11.056] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 11/14/2016] [Accepted: 11/15/2016] [Indexed: 11/25/2022]
Abstract
Chemotherapy is facing several limitations such as low water solubility of anticancer drugs and multidrug resistance (MDR) in cancer cells. To overcome these limitations, a thermoresponsive micellar drug delivery system formed by a non-covalently connected supramolecular block polymer was developed. The system is based on the host-guest interaction between a well-defined β-cyclodextrin (β-CD) based poly(N-isopropylacrylamide) star host polymer and an adamantyl-containing poly(ethylene glycol) (Ad-PEG) guest polymer. The structures of the host and guest polymers were characterized by 1H and 13C NMR, GPC and FTIR. Subsequently, they formed a pseudo-block copolymer via inclusion complexation between β-CD core and adamantyl-moiety, which was confirmed by 2D NMR. The thermoresponsive micellization of the copolymer was investigated by UV-vis spectroscopy, DLS and TEM. At 37°C, the copolymer at a concentration of 0.2mg/mL in PBS formed micelles with a hydrodynamic diameter of ca. 282nm. The anticancer drug, doxorubicin (DOX), was successfully loaded into the core of the micelles with a loading level of 6% and loading efficiency of 17%. The blank polymer micelles showed good biocompatibility in cell cytotoxicity studies. Moreover, the DOX-loaded micelles demonstrated superior therapeutic effects in AT3B-1-N (MDR-) and AT3B-1 (MDR+) cell lines as compared to free DOX control, overcoming MDR in cancer cells.
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Affiliation(s)
- Xia Song
- Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, Singapore
| | - Jing-Ling Zhu
- Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, Singapore
| | - Yuting Wen
- Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, Singapore
| | - Feng Zhao
- Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, Singapore
| | - Zhong-Xing Zhang
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Singapore 138634, Singapore
| | - Jun Li
- Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, Singapore.
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11
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Song X, Wen Y, Zhu JL, Zhao F, Zhang ZX, Li J. Thermoresponsive Delivery of Paclitaxel by β-Cyclodextrin-Based Poly(N-isopropylacrylamide) Star Polymer via Inclusion Complexation. Biomacromolecules 2016; 17:3957-3963. [DOI: 10.1021/acs.biomac.6b01344] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Xia Song
- Department
of Biomedical Engineering, Faculty of Engineering, Faculty of Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, Singapore
| | - Yuting Wen
- Department
of Biomedical Engineering, Faculty of Engineering, Faculty of Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, Singapore
| | - Jing-ling Zhu
- Department
of Biomedical Engineering, Faculty of Engineering, Faculty of Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, Singapore
| | - Feng Zhao
- Department
of Biomedical Engineering, Faculty of Engineering, Faculty of Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, Singapore
| | - Zhong-Xing Zhang
- Institute
of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Singapore 138634, Singapore
| | - Jun Li
- Department
of Biomedical Engineering, Faculty of Engineering, Faculty of Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, Singapore
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12
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Mahalik JP, Sumpter BG, Kumar R. Vertical Phase Segregation Induced by Dipolar Interactions in Planar Polymer Brushes. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01138] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Jyoti P. Mahalik
- Computer
Science and Mathematics
Division and Center for Nanophase Materials
Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Bobby G. Sumpter
- Computer
Science and Mathematics
Division and Center for Nanophase Materials
Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Rajeev Kumar
- Computer
Science and Mathematics
Division and Center for Nanophase Materials
Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
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13
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Serin G, Nguyen HH, Marty JD, Micheau JC, Gernigon V, Mingotaud AF, Bajon D, Soulet T, Massenot S, Coudret C. Terahertz Time-Domain Spectroscopy of Thermoresponsive Polymers in Aqueous Solution. J Phys Chem B 2016; 120:9778-87. [DOI: 10.1021/acs.jpcb.6b06859] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Guillaume Serin
- Institut
Supérieur de l’Aéronautique et de l’Espace
(ISAE-SUPAERO), Université de Toulouse, 31055 Toulouse
Cedex 4, France
- Laboratoire des
IMRCP, Université de Toulouse, CNRS UMR 5623, Université
Paul Sabatier, 118 route de Narbonne 31062 Toulouse Cedex 9, France
| | - Hong Hanh Nguyen
- Laboratoire des
IMRCP, Université de Toulouse, CNRS UMR 5623, Université
Paul Sabatier, 118 route de Narbonne 31062 Toulouse Cedex 9, France
| | - Jean-Daniel Marty
- Laboratoire des
IMRCP, Université de Toulouse, CNRS UMR 5623, Université
Paul Sabatier, 118 route de Narbonne 31062 Toulouse Cedex 9, France
| | - Jean-Claude Micheau
- Laboratoire des
IMRCP, Université de Toulouse, CNRS UMR 5623, Université
Paul Sabatier, 118 route de Narbonne 31062 Toulouse Cedex 9, France
| | - Véronique Gernigon
- Laboratoire des
IMRCP, Université de Toulouse, CNRS UMR 5623, Université
Paul Sabatier, 118 route de Narbonne 31062 Toulouse Cedex 9, France
| | - Anne-Françoise Mingotaud
- Laboratoire des
IMRCP, Université de Toulouse, CNRS UMR 5623, Université
Paul Sabatier, 118 route de Narbonne 31062 Toulouse Cedex 9, France
| | - Damienne Bajon
- Institut
Supérieur de l’Aéronautique et de l’Espace
(ISAE-SUPAERO), Université de Toulouse, 31055 Toulouse
Cedex 4, France
| | - Thierry Soulet
- Institut
Supérieur de l’Aéronautique et de l’Espace
(ISAE-SUPAERO), Université de Toulouse, 31055 Toulouse
Cedex 4, France
| | - Sébastien Massenot
- Institut
Supérieur de l’Aéronautique et de l’Espace
(ISAE-SUPAERO), Université de Toulouse, 31055 Toulouse
Cedex 4, France
| | - Christophe Coudret
- Laboratoire des
IMRCP, Université de Toulouse, CNRS UMR 5623, Université
Paul Sabatier, 118 route de Narbonne 31062 Toulouse Cedex 9, France
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14
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Barnes AL, Genever PG, Rimmer S, Coles MC. Collagen-Poly(N-isopropylacrylamide) Hydrogels with Tunable Properties. Biomacromolecules 2016; 17:723-34. [PMID: 26686360 DOI: 10.1021/acs.biomac.5b01251] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
There is a lack of hydrogel materials whose properties can be tuned at the point of use. Biological hydrogels, such as collagen, gelate at physiological temperatures; however, they are not always ideal as scaffolds because of their low mechanical strength. Their mechanics can be improved through cross-linking and chemical modification, but these methods still require further synthesis. We have demonstrated that by combining collagen with a thermoresponsive polymer, poly(N-isopropylacrylamide) (PNIPAM), the mechanical properties can be improved while maintaining cytocompatibility. Furthermore, different concentrations of this polymer led to a range of hydrogels with shear moduli ranging from 10(5) Pa down to less than 10(2) Pa, similar to the soft tissues in the body. In addition to variable mechanical properties, the hydrogel blends have a range of micron-scale structures and porosities, which caused adipose-derived stromal cells (ADSCs) to adopt different morphologies when encapsulated within and may therefore be able to direct cell fate.
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Affiliation(s)
- Amanda L Barnes
- Department of Biology, University of York , York, YO10 5DD, United Kingdom.,Centre for Immunology and Infection, Department of Biology, University of York , York, YO10 5DD, United Kingdom
| | - Paul G Genever
- Department of Biology, University of York , York, YO10 5DD, United Kingdom
| | - Stephen Rimmer
- School of Chemistry and Forensic Science, University of Bradford , Bradford, West Yorkshire, BD7 1DP, United Kingdom
| | - Mark C Coles
- Centre for Immunology and Infection, Department of Biology, University of York , York, YO10 5DD, United Kingdom
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15
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16
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Jiao L, Zhang L, Guan W, Lu C. Fluorescence visualization of interactions between surfactants and polymers. RSC Adv 2016. [DOI: 10.1039/c6ra19517b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
An aggregation-induced emission luminescent surfactant is used to visualize the interactions between surfactants and polymers.
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Affiliation(s)
- Lulu Jiao
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Lijuan Zhang
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Weijiang Guan
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Chao Lu
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
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17
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Sosnik A, Imperiale JC, Vázquez-González B, Raskin MM, Muñoz-Muñoz F, Burillo G, Cedillo G, Bucio E. Mucoadhesive thermo-responsive chitosan- g -poly( N -isopropylacrylamide) polymeric micelles via a one-pot gamma-radiation-assisted pathway. Colloids Surf B Biointerfaces 2015; 136:900-7. [DOI: 10.1016/j.colsurfb.2015.10.036] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 10/20/2015] [Accepted: 10/26/2015] [Indexed: 02/08/2023]
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18
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Fan G, Guo J, Dong M, Feng Y. Thermothickening Behavior of Graft Copolymers Containing Poly(N-isopropylacrylamide-co-N,N-dimethylacrylamide) Side Chains in Aqueous Solution. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2014. [DOI: 10.1080/10601325.2014.953370] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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19
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Sarker P, Swindells K, Douglas CWI, MacNeil S, Rimmer S, Swanson L. Förster resonance energy transfer confirms the bacterial-induced conformational transition in highly-branched poly(N-isopropyl acrylamide with vancomycin end groups on binding to Staphylococcus aureus. SOFT MATTER 2014; 10:5824-5835. [PMID: 24974819 DOI: 10.1039/c4sm00056k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We describe a series of experiments designed to investigate the conformational transition that highly-branched polymers with ligands undergo when interacting with bacteria, a process that may provide a new sensing mechanism for bacterial detection. Fluorescent highly-branched poly(N-isopropyl acrylamide)s (HB-PNIPAM) were prepared by sequential self-condensing radical copolymerizations, using anthrylmethyl methacrylate (AMMA) and fluorescein-O-acrylate (FA) as fluorescent comonomers and 4-vinylbenzyl pyrrole carbodithioate as a branch forming monomer. Differences in reactivity necessitated to first copolymerize AMMA then react with FA in a separate sequential monomer feed step. Modifications of the chain ends produced vancomycin-functional derivatives (HB-PNIPAM-Van). The AMMA and FA labels allow probing of the conformational behaviour of the polymers in solution via Förster resonance energy transfer experiments. It was shown that interaction of this polymer's end groups with Staphylococcus aureus induced a macromolecular collapse. The data thus provide conclusive evidence for a conformational transition that is driven by binding to a bacterium.
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Affiliation(s)
- Prodip Sarker
- Department of Chemistry, Brook Hill, University of Sheffield, Sheffield, South Yorkshire, UK S3 7HF.
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20
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Boreham A, Brodwolf R, Pfaff M, Kim TY, Schlieter T, Mundhenk L, Gruber AD, Gröger D, Licha K, Haag R, Alexiev U. Temperature and environment dependent dynamic properties of a dendritic polyglycerol sulfate. POLYM ADVAN TECHNOL 2014. [DOI: 10.1002/pat.3355] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Alexander Boreham
- Physics Department; Freie Universität Berlin; Arnimallee 14 D-14195 Berlin Germany
| | - Robert Brodwolf
- Physics Department; Freie Universität Berlin; Arnimallee 14 D-14195 Berlin Germany
- Helmholtz Virtual Institute-Multifunctional Biomaterials for Medicine; Helmholtz-Zentrum Geesthacht; Teltow Germany
| | - Marcus Pfaff
- Physics Department; Freie Universität Berlin; Arnimallee 14 D-14195 Berlin Germany
- Faculty of Engineering and Computer Science; BTU Cottbus-Senftenberg; Großenhainer Str. 57 D-01968 Senftenberg Germany
| | - Tai-Yang Kim
- Physics Department; Freie Universität Berlin; Arnimallee 14 D-14195 Berlin Germany
| | - Thomas Schlieter
- Physics Department; Freie Universität Berlin; Arnimallee 14 D-14195 Berlin Germany
| | - Lars Mundhenk
- Institute of Veterinary Pathology; Freie Universität Berlin; Robert-von-Ostertag-Straße 15 D-14163 Berlin Germany
| | - Achim D. Gruber
- Institute of Veterinary Pathology; Freie Universität Berlin; Robert-von-Ostertag-Straße 15 D-14163 Berlin Germany
- Helmholtz Virtual Institute-Multifunctional Biomaterials for Medicine; Helmholtz-Zentrum Geesthacht; Teltow Germany
| | - Dominic Gröger
- Institut für Chemie und Biochemie; Freie Universität Berlin; Takustr. 3 D-14195 Berlin Germany
| | - Kai Licha
- mivenion GmbH; Robert-Koch-Platz 4 D-10115 Berlin Germany
| | - Rainer Haag
- Institut für Chemie und Biochemie; Freie Universität Berlin; Takustr. 3 D-14195 Berlin Germany
- Helmholtz Virtual Institute-Multifunctional Biomaterials for Medicine; Helmholtz-Zentrum Geesthacht; Teltow Germany
| | - Ulrike Alexiev
- Physics Department; Freie Universität Berlin; Arnimallee 14 D-14195 Berlin Germany
- Helmholtz Virtual Institute-Multifunctional Biomaterials for Medicine; Helmholtz-Zentrum Geesthacht; Teltow Germany
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21
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Boreham A, Pfaff M, Fleige E, Haag R, Alexiev U. Nanodynamics of dendritic core-multishell nanocarriers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:1686-95. [PMID: 24460144 DOI: 10.1021/la4043155] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The molecular dynamics of polymeric nanocarriers is an important parameter for controlling the interaction of nanocarrier branches with cargo. Understanding the interplay of dendritic polymer dynamics, temperature, and cargo molecule interactions should provide valuable new insight for tailoring the dendritic architecture to specific needs in nanomedicine, drug, dye, and gene delivery. Here, we have investigated polyglycerol-based core-multishell (CMS) nanotransporters with incorporated Nile Red as a fluorescent drug mimetic and CMS nanotransporters with a covalently bound fluorophore (Indocarbocyanine) using fluorescence spectroscopy methods. From time-resolved fluorescence depolarization we have obtained the rotational diffusion dynamics of the incorporated dye, the nanocarrier, and its branches as a function of temperature. UV/vis and fluorescence lifetime measurements provided additional information on the local dye environment. Our results show a distribution of the cargo Nile Red within the nanotransporter shells that depends on solvent and temperature. In particular, we show that the flexibility of the polymer branches in the unimolecular state of the nanotransporter undergoes a temperature-dependent transition which correlates with a larger space for the mobility of the incorporated hydrophobic drug mimetic Nile Red and a higher probability of cargo-solvent interactions at temperatures above 31 °C. The measurements have further revealed that a loss of the cargo molecule Nile Red occurred neither upon dilution of the CMS nanotransporters nor upon heating. Thus, the unimolecular preloaded CMS nanotransporters retain their cargo and are capable to transport and respond to temperature, thereby fulfilling important requirements for biomedical applications.
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Affiliation(s)
- Alexander Boreham
- Institut für Experimentalphysik, Freie Universität Berlin , Arnimallee 14, 14195 Berlin, Germany
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22
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Nakamoto M, Hoshino Y, Miura Y. Effect of Physical Properties of Nanogel Particles on the Kinetic Constants of Multipoint Protein Recognition Process. Biomacromolecules 2014; 15:541-7. [DOI: 10.1021/bm401536v] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Masahiko Nakamoto
- Department of Chemical Engineering, Kyushu University, 744
Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Yu Hoshino
- Department of Chemical Engineering, Kyushu University, 744
Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Yoshiko Miura
- Department of Chemical Engineering, Kyushu University, 744
Motooka, Nishi-ku, Fukuoka 819-0395, Japan
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23
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Yu X, Yang X, Horte S, Kizhakkedathu JN, Brooks DE. A Thermoreversible Poly(Choline Phosphate) Based Universal Biomembrane Adhesive. Macromol Biosci 2013; 14:334-9. [DOI: 10.1002/mabi.201300425] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 10/02/2013] [Indexed: 02/01/2023]
Affiliation(s)
- Xifei Yu
- Centre for Blood Research; 2350 Health Sciences Mall; University of British Columbia; Vancouver V6T 1Z3 Canada
- Department of Pathology and Laboratory Medicine; 2211 Wesbrook Mall; UBC; Vancouver V6T 2B5 Canada
| | - Xiaoqiang Yang
- Centre for Blood Research; 2350 Health Sciences Mall; University of British Columbia; Vancouver V6T 1Z3 Canada
- Department of Pathology and Laboratory Medicine; 2211 Wesbrook Mall; UBC; Vancouver V6T 2B5 Canada
| | - Sonja Horte
- Centre for Blood Research; 2350 Health Sciences Mall; University of British Columbia; Vancouver V6T 1Z3 Canada
- Department of Pathology and Laboratory Medicine; 2211 Wesbrook Mall; UBC; Vancouver V6T 2B5 Canada
| | - Jayachandran N. Kizhakkedathu
- Centre for Blood Research; 2350 Health Sciences Mall; University of British Columbia; Vancouver V6T 1Z3 Canada
- Department of Pathology and Laboratory Medicine; 2211 Wesbrook Mall; UBC; Vancouver V6T 2B5 Canada
- Department of Chemistry; 2036 Main Mall; UBC; Vancouver V6T 1Z1 Canada
| | - Donald E. Brooks
- Centre for Blood Research; 2350 Health Sciences Mall; University of British Columbia; Vancouver V6T 1Z3 Canada
- Department of Pathology and Laboratory Medicine; 2211 Wesbrook Mall; UBC; Vancouver V6T 2B5 Canada
- Department of Chemistry; 2036 Main Mall; UBC; Vancouver V6T 1Z1 Canada
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24
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Yu X, Yang X, Horte S, Kizhakkedathu JN, Brooks DE. A pH and thermosensitive choline phosphate-based delivery platform targeted to the acidic tumor microenvironment. Biomaterials 2013; 35:278-86. [PMID: 24112803 DOI: 10.1016/j.biomaterials.2013.09.052] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Accepted: 09/16/2013] [Indexed: 01/24/2023]
Abstract
Solid tumors generally exhibit an acidic microenvironment which has been recognized as a potential route to distinguishing tumor from normal tissue for purposes of drug delivery or imaging. To this end we describe a pH and temperature sensitive polymeric adhesive that can be derivatized to carry drugs or other agents and can be tuned synthetically to bind to tumor cells at pH 6.8 but not at pH 7.4 at 37 °C. The adhesive is based on the universal reaction between membrane phosphatidyl choline (PC) molecules and polymers derivatized with multiple copies of the inverse motif, choline phosphate (CP). The polymer family we use is a linear copolymer of a CP terminated tetraethoxymethacrylate and dimethylaminoethyl (DMAE) methacrylate, the latter providing pH sensitivity. The copolymer exhibits a lower critical solution temperature (LCST) just below 37 °C when the DMAE is uncharged at pH 7.4 but the LCST does not occur when the group is charged at pH 6.8 due to the ionization hydrophilicity. At 37 °C the polymer binds strongly to mammalian cells at pH 6.8 but does not bind at pH 7.4, potentially targeting tumor cells existing in an acidic microenvironment. We show the binding is strong, reversible if the pH is raised and is followed rapidly by cellular uptake of the fluorescently labeled material. Drug delivery utilizing this dually responsive family of polymers should provide a basis for targeting tumor cells with minimal side reactions against untransformed counterparts.
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Affiliation(s)
- Xifei Yu
- Centre for Blood Research, 2350 Health Sciences Mall, University of British Columbia, Vancouver V6T 1Z3, Canada; Department of Pathology and Laboratory Medicine, UBC, Canada
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25
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Yu X, Zou Y, Horte S, Janzen J, Kizhakkedathu JN, Brooks DE. Thermal Reversal of Polyvalent Choline Phosphate, a Multivalent Universal Biomembrane Adhesive. Biomacromolecules 2013; 14:2611-21. [DOI: 10.1021/bm400466e] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Xifei Yu
- Centre for Blood Research,
2350
Health Sciences Mall, University of British Columbia, Vancouver V6T 1Z3, Canada
- Department of Pathology and
Laboratory Medicine, Room G227-2211 Wesbrook Mall, University of British Columbia, Vancouver V6T 2B5, Canada
| | - Yuquan Zou
- Centre for Blood Research,
2350
Health Sciences Mall, University of British Columbia, Vancouver V6T 1Z3, Canada
- Department of Pathology and
Laboratory Medicine, Room G227-2211 Wesbrook Mall, University of British Columbia, Vancouver V6T 2B5, Canada
| | - Sonja Horte
- Centre for Blood Research,
2350
Health Sciences Mall, University of British Columbia, Vancouver V6T 1Z3, Canada
- Department of Pathology and
Laboratory Medicine, Room G227-2211 Wesbrook Mall, University of British Columbia, Vancouver V6T 2B5, Canada
| | - Johan Janzen
- Centre for Blood Research,
2350
Health Sciences Mall, University of British Columbia, Vancouver V6T 1Z3, Canada
- Department of Pathology and
Laboratory Medicine, Room G227-2211 Wesbrook Mall, University of British Columbia, Vancouver V6T 2B5, Canada
| | - Jayachandran N. Kizhakkedathu
- Centre for Blood Research,
2350
Health Sciences Mall, University of British Columbia, Vancouver V6T 1Z3, Canada
- Department of Pathology and
Laboratory Medicine, Room G227-2211 Wesbrook Mall, University of British Columbia, Vancouver V6T 2B5, Canada
- Department of Chemistry, 2036
Main Mall, University of British Columbia, Vancouver V6T 1Z1, Canada
| | - Donald E. Brooks
- Centre for Blood Research,
2350
Health Sciences Mall, University of British Columbia, Vancouver V6T 1Z3, Canada
- Department of Pathology and
Laboratory Medicine, Room G227-2211 Wesbrook Mall, University of British Columbia, Vancouver V6T 2B5, Canada
- Department of Chemistry, 2036
Main Mall, University of British Columbia, Vancouver V6T 1Z1, Canada
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26
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Interruption of hydration state of thermoresponsive polymer, poly(N-isopropylacrylamide) in guanidinium hydrochloride. POLYMER 2013. [DOI: 10.1016/j.polymer.2012.12.032] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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27
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Yang CM, Lai YW, Kuo SW, Hong JL. Complexation of fluorescent tetraphenylthiophene-derived ammonium chloride to poly(N-isopropylacrylamide) with sulfonate terminal: aggregation-induced emission, critical micelle concentration, and lower critical solution temperature. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:15725-15735. [PMID: 23075117 DOI: 10.1021/la303783n] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Amphiphilic polymers with hydrophilic poly(N-isopropylacylamide) (PNIPAM) shell connecting hydrophobic tetraphenylthiophene (TP) core, which has the novel aggregation-induced emission (AIE) property, by ionic bonds were prepared to explore the AIE-operative emission responses toward critical micelle concentration (CMC) and lower critical solution temperature (LCST). To exercise the idea, ammonium-functionalized TP2NH(3)(+) and sulfonate-terminated PNIPAM were separately prepared and mixed in different molar ratios to yield three amphiphilic TP-PNIPAMn complexes for the evaluations of CMC and LCST by fluorescence responses. The nonemissive dilute aqueous solutions of TP-PNIPAMn became fluorescent when increasing concentrations above CMC. Heating micelles solution to temperatures above LCSTs causes further enhancement on the emission intensity. The fluorescence responses are explained by the extent of aggregation in the micelles and in the globules formed at room temperature and at high temperatures, respectively.
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Affiliation(s)
- Chih-Min Yang
- Department of Materials and Optoelectric Science, National Sun Yat-Sen University, Kaohsiung, Taiwan
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28
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Niskanen J, Wu C, Ostrowski M, Fuller GG, Tenhu H, Hietala S. Interfacial and fluorescence studies on stereoblock poly(N-isopropylacryl amide)s. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:14792-14798. [PMID: 22994542 DOI: 10.1021/la302468j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Aqueous solution and water-air interfacial properties of associative thermally responsive A-B-A stereoblock poly(N-isopropylacryl amide), PNIPAM, polymers were studied and compared to atactic PNIPAM. The A-B-A polymers consist of atactic PNIPAM as a hydrophilic block (either A or B) and a water-insoluble block of isotactic PNIPAM. The surface tensions of aqueous PNIPAM solutions were measured as a function of both temperature and concentration. The isotactic blocks did not have an effect on the surface activity of the solutions. Rheological measurements on the water-air interface showed that the aggregated PNIPAMs containing isotactic blocks increased the elasticity of the surface significantly as compared to the atactic reference upon heating. Two fluorescence probes, pyrene and (4-(dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran (4HP), added to the aqueous polymer solutions were concluded to reside in surroundings with lower polarity and increased microviscosity in cases when the polymers contained isotactic blocks, as compared to ordinary atactic polymers.
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Affiliation(s)
- Jukka Niskanen
- Laboratory of Polymer Chemistry, Department of Chemistry, University of Helsinki, P.O Box 55, FIN-00014 HU, Finland
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29
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Lee SH, Hoshino Y, Randall A, Zeng Z, Baldi P, Doong RA, Shea KJ. Engineered synthetic polymer nanoparticles as IgG affinity ligands. J Am Chem Soc 2012; 134:15765-72. [PMID: 22924890 PMCID: PMC3482410 DOI: 10.1021/ja303612d] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A process for the preparation of an abiotic protein affinity ligand is described. The affinity ligand, a synthetic polymer hydrogel nanoparticle (NP), is formulated with functional groups complementary to the surface presentation of the target protein. An iterative process is used to improve affinity by optimizing the composition and proportion of functional monomers. Since the polymer NPs are formed by a kinetically driven process, the sequence of functional monomers in the polymer chain is not controlled; only the average composition can be adjusted by the stoichiometry of the monomers in the feed. To compensate for this the hydrogel NP is lightly cross-linked resulting in chain flexibility that takes place on a submillisecond time scale allowing the polymer to "map" onto a protein surface with complementary functionality. In this study, we report a lightly cross-linked (2%) N-isopropyl acrylamide (NIPAm) synthetic polymer NP (50-65 nm) incorporating hydrophobic and carboxylate groups that binds with high affinity to the Fc fragment of IgG. The affinity and amount of NP bound to IgG is pH dependent. The hydrogel NP inhibits protein A binding to the Fc domain at pH 5.5, but not at pH 7.3. A computational analysis was used to identify potential NP-protein interaction sites. Candidates include a NP binding domain that overlaps with the protein A-Fc binding domain at pH 5.5. The computational analysis supports the inhibition experimental results and is attributed to the difference in the charged state of histidine residues. Affinity of the NP (3.5-8.5 nM) to the Fc domain at pH 5.5 is comparable to protein A at pH 7. These results establish that engineered synthetic polymer NPs can be formulated with an intrinsic affinity to a specific domain of a large biomacromolecule.
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Affiliation(s)
- Shih-Hui Lee
- Department of Chemistry, University of California, Irvine, Irvine, CA 92697
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Yu Hoshino
- Department of Chemical Engineering, Kyushu University, Motooka, Fukuoka 819-0395 (Japan)
| | - Arlo Randall
- Department of Computer Science, University of California, Irvine, Irvine, CA 92697
- Institute for Genomics and Bioinformatics, University of California, Irvine, Irvine, CA 92697
| | - Zhiyang Zeng
- Department of Chemistry, University of California, Irvine, Irvine, CA 92697
| | - Piere Baldi
- Department of Computer Science, University of California, Irvine, Irvine, CA 92697
- Institute for Genomics and Bioinformatics, University of California, Irvine, Irvine, CA 92697
| | - Ruey-an Doong
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Kenneth. J. Shea
- Department of Chemistry, University of California, Irvine, Irvine, CA 92697
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30
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Hoshino Y, Nakamoto M, Miura Y. Control of Protein-Binding Kinetics on Synthetic Polymer Nanoparticles by Tuning Flexibility and Inducing Conformation Changes of Polymer Chains. J Am Chem Soc 2012; 134:15209-12. [DOI: 10.1021/ja306053s] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Yu Hoshino
- Department
of Chemical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395,
Japan
| | - Masahiko Nakamoto
- Department
of Chemical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395,
Japan
| | - Yoshiko Miura
- Department
of Chemical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395,
Japan
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31
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de Lima BV, Vidal RRL, do N. Marques N, S. Maia AM, de C. Balaban R. Temperature-induced thickening of sodium carboxymethylcellulose and poly(N-isopropylacrylamide) physical blends in aqueous solution. Polym Bull (Berl) 2012. [DOI: 10.1007/s00289-012-0813-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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32
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Thivaios I, Diamantis I, Bokias G, Kallitsis JK. Temperature-responsive photoluminescence of quinoline-labeled poly(N-isopropylacrylamide) in aqueous solution. Eur Polym J 2012. [DOI: 10.1016/j.eurpolymj.2012.04.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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33
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Shiraishi Y, Sumiya S, Manabe K, Hirai T. Thermoresponsive copolymer containing a coumarin-spiropyran conjugate: reusable fluorescent sensor for cyanide anion detection in water. ACS APPLIED MATERIALS & INTERFACES 2011; 3:4649-4656. [PMID: 22043965 DOI: 10.1021/am201069n] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A simple copolymer consisting of N-isopropylacrylamide and coumarin-conjugated spiropyran (CS) units, poly(NIPAM-co-CS), has been synthesized. This polymer enables selective fluorometric detection of cyanide anion (CN(-)) in water at room temperature. The polymer itself shows almost no fluorescence, but shows a strong blue fluorescence in the presence of CN(-) under irradiation of UV light. The fluorescence enhancement occurs via a nucleophilic interaction between CN(-) and the photoformed merocyanine form of the CS unit, leading to a localization of π-electrons on the coumarin moiety. The polymer enables accurate determination of very low levels of CN(-) (>0.5 μM). The polymer can be recovered from water by simple centrifugation at high temperature (>40 °C), due to the heat-induced aggregation of the polymer. In addition, the polymer is regenerated by simple acid treatment, and the resulting polymer is successfully reused for further CN(-) sensing without loss of sensitivity.
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Affiliation(s)
- Yasuhiro Shiraishi
- Research Center for Solar Energy Chemistry and Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531, Japan.
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34
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Allı S, Allı A, Hazer B. Hyperbranched homo and thermoresponsive graft copolymers by using ATRP-macromonomer initiators. J Appl Polym Sci 2011. [DOI: 10.1002/app.34933] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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35
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Quynh TM, Yoneyamab M, Maki Y, Dobashi T. Poly(N-isopropylacrylamide-co-hydroxyethyl methacrylate) graft copolymers and their application as carriers for drug delivery system. J Appl Polym Sci 2011. [DOI: 10.1002/app.34821] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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36
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Patel T, Ghosh G, Yusa SI, Bahadur P. Solution Behavior of Poly(n-Isopropylacrylamide) in Water: Effect of Additives. J DISPER SCI TECHNOL 2011. [DOI: 10.1080/01932691.2010.497701] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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37
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Gielen F, Pereira F, Demello AJ, Edel JB. High-resolution local imaging of temperature in dielectrophoretic platforms. Anal Chem 2011; 82:7509-14. [PMID: 20684541 DOI: 10.1021/ac101557g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The use of dielectrophoretic forces is crucially tied to the knowledge of Joule heating within a fluid, since the use of planar microelectrodes creates a temperature gradient within which the particle of interest is manipulated. Mapping temperature with sufficient spatial resolution within a dielectrophoretic trap is recognized to be of high importance. Herein, we demonstrate local temperature measurements in the vicinity of a trapped micrometer-size particle using confocal fluorescence spectroscopy. Such measurements are shown to provide a novel calibration tool for screening temperature-mediated processes with high resolution.
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Affiliation(s)
- Fabrice Gielen
- Institute of Biomedical Engineering, Imperial College London, South Kensington, London, SW7 2AZ, United Kingdom
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38
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Sarker P, Shepherd J, Swindells K, Douglas I, MacNeil S, Swanson L, Rimmer S. Highly branched polymers with polymyxin end groups responsive to Pseudomonas aeruginosa. Biomacromolecules 2010; 12:1-5. [PMID: 21126084 DOI: 10.1021/bm100922j] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Polymyxin peptide conjugated to the end groups of highly branched poly(N-isopropyl acrylamide) was shown to bind to a Gram negative bacterium, Pseudomonas aeruginosa . The nonbound polymer had a lower critical solution temperature (LCST) above 60 °C. However, binding caused aggregation, which was disrupted on cooling of the bacteria and polymer mixture. The data indicate that polymer binding of bacteria occurred by interaction of the end groups with lipopolysaccharide and that the binding decreased the LCST to below 37 °C. Cooling then progressed the polymer/bacteria aggregate through a bound LCST into an open polymer coil conformation that was not adhesive to P. aeruginosa .
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Affiliation(s)
- Prodip Sarker
- Polymer and Biomaterials Chemistry Laboratories, Department of Chemistry, University of Sheffield, Sheffield, South Yorkshire, S3 7HF United Kingdom
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39
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Don TM, Chou SC, Cheng LP, Tai HY. Cellular compatibility of copolymer hydrogels based on site-selectively-modified chitosan with poly(N-isopropyl acrylamide). J Appl Polym Sci 2010. [DOI: 10.1002/app.32806] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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40
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Graham EM, Iwai K, Uchiyama S, de Silva AP, Magennis SW, Jones AC. Quantitative mapping of aqueous microfluidic temperature with sub-degree resolution using fluorescence lifetime imaging microscopy. LAB ON A CHIP 2010; 10:1267-73. [PMID: 20445879 DOI: 10.1039/b924151e] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The use of a water-soluble, thermo-responsive polymer as a highly sensitive fluorescence-lifetime probe of microfluidic temperature is demonstrated. The fluorescence lifetime of poly(N-isopropylacrylamide) labelled with a benzofurazan fluorophore is shown to have a steep dependence on temperature around the polymer phase transition and the photophysical origin of this response is established. The use of this unusual fluorescent probe in conjunction with fluorescence lifetime imaging microscopy (FLIM) enables the spatial variation of temperature in a microfluidic device to be mapped, on the micron scale, with a resolution of less than 0.1 degrees C. This represents an increase in temperature resolution of an order of magnitude over that achieved previously by FLIM of temperature-sensitive dyes.
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Affiliation(s)
- Emmelyn M Graham
- School of Chemistry, The University of Edinburgh, Edinburgh, EH9 3JJ, UK
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41
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Fluorescence Spectroscopy as a Tool for Investigating the Self-Organized Polyelectrolyte Systems. SELF ORGANIZED NANOSTRUCTURES OF AMPHIPHILIC BLOCK COPOLYMERS I 2010. [DOI: 10.1007/12_2010_56] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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42
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Wang D, Miyamoto R, Shiraishi Y, Hirai T. BODIPY-conjugated thermoresponsive copolymer as a fluorescent thermometer based on polymer microviscosity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:13176-13182. [PMID: 19821567 DOI: 10.1021/la901860x] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A simple copolymer, poly(NIPAM-co-BODIPY), consisting of N-isopropylacrylamide (NIPAM) and boradiazaindacene (BODIPY) units, behaves as a fluorescent thermometer in water. The copolymer exhibits weak fluorescence at <23 degrees C, but the intensity increases with a rise in temperature up to 35 degrees C, enabling an accurate indication of the solution temperature at 23-35 degrees C. The heat-induced fluorescence enhancement is driven by an increase in the polymer microviscosity, associated with a phase transition of the polymer from the coil to globule state. The viscous domain formed inside the globule-state polymer suppresses the rotation of the meso-pyridinium group of the excited-state BODIPY units, resulting in heat-induced fluorescence enhancement. The polymer shows reversible fluorescence enhancement/quenching regardless of the heating/cooling process and displays high reusability with a simple recovery process.
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Affiliation(s)
- Dongping Wang
- Research Center for Solar Energy Chemistry and Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531, Japan
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43
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Soutar I, Swanson L, Adamson PG, Flint NJ. Conformational Behavior of a Series of N-Isopropylacrylamide−Bromostyrene Statistical Copolymers via Phosphorescence Measurements. Macromolecules 2009. [DOI: 10.1021/ma901772u] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ian Soutar
- Department of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, U.K
| | - Linda Swanson
- Department of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, U.K
| | - Philip G. Adamson
- School of Physics and Chemistry, Lancaster University, Lancaster LA1 4YA, U.K
| | - Nicholas J. Flint
- School of Physics and Chemistry, Lancaster University, Lancaster LA1 4YA, U.K
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de Oliveira Tiera VA, Tiera MJ, Blaz Vieira NA, do Amaral BR, Pires RZ. The Interaction BetweenN–Isopropylacrylamide-Acrylic Acid-Ethyl Methacrylate Thermosensitive Polymers and Cationic Surfactants. J DISPER SCI TECHNOL 2009. [DOI: 10.1080/01932690802701499] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Rivarola CR, Biasutti MA, Barbero CA. A visible light photoinitiator system to produce acrylamide based smart hydrogels: Ru(bpy)3+2 as photopolymerization initiator and molecular probe of hydrogel microenvironments. POLYMER 2009. [DOI: 10.1016/j.polymer.2009.04.074] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Kolaric B, Sliwa M, Vallée R, Van der Auweraer M. Polymer–dye interactions as a tool for studying phase transitions. Colloids Surf A Physicochem Eng Asp 2009. [DOI: 10.1016/j.colsurfa.2008.12.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Rimmer S, Soutar I, Swanson L. Switching the conformational behaviour of poly(N-isopropyl acrylamide). POLYM INT 2009. [DOI: 10.1002/pi.2537] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Geoghegan M, Andrews JS, Biggs CA, Eboigbodin KE, Elliott DR, Rolfe S, Scholes J, Ojeda JJ, Romero-González ME, Edyvean RGJ, Swanson L, Rutkaite R, Fernando R, Pen Y, Zhang Z, Banwart SA. The polymer physics and chemistry of microbial cell attachment and adhesion. Faraday Discuss 2009; 139:85-103; discussion 105-28, 419-20. [PMID: 19048992 DOI: 10.1039/b717046g] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The attachment of microbial cells to solid substrata is a primary ecological strategy for the survival of species and the development of specific activity and function within communities. An hypothesis arising from a biological sciences perspective may be stated as follows: The attachment of microbes to interfaces is controlled by the macromolecular structure of the cell wall and the functional genes that are induced for its biological synthesis. Following logically from this is the view that diverse attached cell behaviour is mediated by the physical and chemical interactions of these macromolecules in the interfacial region and with other cells. This aspect can be reduced to its simplest form by treating physico-chemical interactions as colloidal forces acting between an isolated cell and a solid or pseudo solid substratum. These forces can be analysed by established methods rooted in DLVO (Derjaguin, Landau, Verwey and Overbeek) theory. Such a methodology provides little insight into what governs changes in the behaviour of the cell wall attached to surfaces, or indeed other cells. Nor does it shed any light on the expulsion of macromolecules that modify the interface such as formation of slime layers. These physical and chemical problems must be treated at the more fundamental level of the structure and behaviour of the individual components of the cell wall, for example biosurfactants and extracellular polysaccharides. This allows us to restate the above hypothesis in physical sciences terms: Cell attachment and related cell growth behaviour is mediated by macromolecular physics and chemistry in the interfacial environment. Ecological success depends on the genetic potential to favourably influence the interface through adaptation of the macromolecular structure, We present research that merges these two perspectives. This is achieved by quantifying attached cell growth for genetically diverse model organisms, building chemical models that capture the variations in interfacial structure and quantifying the resulting physical interactions. Experimental observations combine aqueous chemistry techniques with surface spectroscopy in order to elucidate the cell wall structure. Atomic force microscopy methods quantify the physical interactions between the solid substrata and key components of the cell wall such as macromolecular biosurfactants. Our current approach focuses on considering individually mycolic acids or longer chain polymers harvested from cells, as well as characterised whole cells. This approach allows us to use a multifactorial approach to address the relative impact of the individual components of the cell wall in contact with model surfaces. We then combine these components to increase complexity step-wise, while comparing with the behaviour of entire cells. Eventually, such an approach should allow us to estimate and understand the primary factors governing microbial cell adhesion. Although the work addresses the cell-mineral interface at a fundamental level, the research is driven by a range of technology needs. The initial rationale was improved prediction of contaminant degradation in natural environments (soils, sediments, aquifers) for environmental cleanup. However, this area of research addresses a wide range of biotechnology areas including improved understanding of pathogen survival (e.g., in surgical environments), better process intensification in biomanufacturing (biofilm technologies) and new product development.
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Affiliation(s)
- Mark Geoghegan
- Department of Physics and Astronomy, The University of Sheffield, Sheffield, UK S3 7RH.
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Abulateefeh SR, Saeed AO, Aylott JW, Chan WC, Garnett MC, Saunders BR, Alexander C. Facile synthesis of responsive nanoparticles with reversible, tunable and rapid thermal transitions from biocompatible constituents. Chem Commun (Camb) 2009:6068-70. [DOI: 10.1039/b911986h] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Fang J, Bian F, Shen W. A study on solution properties of poly(N,N-diethylacrylamide-co-acrylic acid). J Appl Polym Sci 2008. [DOI: 10.1002/app.28911] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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