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Škorňa A, Selianitis D, Pispas S, Štěpánek M. Association of Thermoresponsive Diblock Copolymer PDEGMA- b-PDIPAEMA in Aqueous Solutions: The Influence of Terminal Groups. Polymers (Basel) 2024; 16:2102. [PMID: 39125129 PMCID: PMC11313919 DOI: 10.3390/polym16152102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Revised: 07/11/2024] [Accepted: 07/19/2024] [Indexed: 08/12/2024] Open
Abstract
Aqueous solutions of a thermoresponsive diblock copolymer poly(di-[ethylene glycol] methyl ether methacrylate)-b-poly(2-[diisopropylamino] ethyl methacrylate) (PDEGMA-b-PDIPAEMA) were studied by static, dynamic and electrophoretic light scattering, small-angle X-ray scattering and differential scanning calorimetry. Thermoresponsive behavior of PDEGMA-b-PDIPAEMA was investigated at two pH values, pH = 2, at which the terminal carboxylic group of the PDEGMA chain and the PDIPAEMA block are protonated, and pH = 7, where the carboxyl terminal group is ionized while the PDIPAEMA block is partially deprotonated and more hydrophobic. Both at pH = 2 and 7, PDEGMA-b-PDIPAEMA copolymer underwent extensive association (the size of the aggregates was between 100 and 300 nm), indicating strong interchain interactions. While the measurements confirmed thermoresponsive behavior of PDEGMA-b-PDIPAEMA at pH = 7, no changes in the association with temperature were observed at pH 2 as the thermoresponsivity of PDEGMA was suppressed by hydrogen bonding between carboxylic groups and PDEGMA segments, as well as due to the increased hydrophilicity of the PDIPAEMA block. Fluorescence measurements with pyrene as a fluorescent probe showed that both at pH = 2 and pH = 7 the associates were able to solubilize hydrophobic substances.
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Affiliation(s)
- Adam Škorňa
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic;
| | - Dimitrios Selianitis
- Theoretical & Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece; (D.S.); (S.P.)
| | - Stergios Pispas
- Theoretical & Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece; (D.S.); (S.P.)
| | - Miroslav Štěpánek
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic;
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2
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Farjadian F, Ghasemi S, Akbarian M, Hoseini-Ghahfarokhi M, Moghoofei M, Doroudian M. Physically stimulus-responsive nanoparticles for therapy and diagnosis. Front Chem 2022; 10:952675. [PMID: 36186605 PMCID: PMC9515617 DOI: 10.3389/fchem.2022.952675] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 08/02/2022] [Indexed: 11/13/2022] Open
Abstract
Nanoparticles offer numerous advantages in various fields of science, particularly in medicine. Over recent years, the use of nanoparticles in disease diagnosis and treatments has increased dramatically by the development of stimuli-responsive nano-systems, which can respond to internal or external stimuli. In the last 10 years, many preclinical studies were performed on physically triggered nano-systems to develop and optimize stable, precise, and selective therapeutic or diagnostic agents. In this regard, the systems must meet the requirements of efficacy, toxicity, pharmacokinetics, and safety before clinical investigation. Several undesired aspects need to be addressed to successfully translate these physical stimuli-responsive nano-systems, as biomaterials, into clinical practice. These have to be commonly taken into account when developing physically triggered systems; thus, also applicable for nano-systems based on nanomaterials. This review focuses on physically triggered nano-systems (PTNSs), with diagnostic or therapeutic and theranostic applications. Several types of physically triggered nano-systems based on polymeric micelles and hydrogels, mesoporous silica, and magnets are reviewed and discussed in various aspects.
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Affiliation(s)
- Fatemeh Farjadian
- Pharmaceutical Sciences Research Center, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
- *Correspondence: Fatemeh Farjadian, , Soheila Ghasemi, , Mohammad Doroudian,
| | - Soheila Ghasemi
- Department of Chemistry, College of Sciences, Shiraz University, Shiraz, Iran
- *Correspondence: Fatemeh Farjadian, , Soheila Ghasemi, , Mohammad Doroudian,
| | - Mohsen Akbarian
- Department of Chemistry, National Cheng Kung University, Tainan, Taiwan
| | | | - Mohsen Moghoofei
- Department of Microbiology, Faculty of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mohammad Doroudian
- Department of Cell and Molecular Sciences, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
- *Correspondence: Fatemeh Farjadian, , Soheila Ghasemi, , Mohammad Doroudian,
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3
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Regulating the uptake of poly(N-(2-hydroxypropyl) methacrylamide)-based micelles in cells cultured on micropatterned surfaces. Biointerphases 2021; 16:041002. [PMID: 34261325 DOI: 10.1116/6.0001012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Cellular uptake of nanoparticles plays a crucial role in cell-targeted biomedical applications. Despite abundant studies trying to understand the interaction between nanoparticles and cells, the influence of cell geometry traits such as cell spreading area and cell shape on the uptake of nanoparticles remains unclear. In this study, poly(vinyl alcohol) is micropatterned on polystyrene cell culture plates using ultraviolet photolithography to control the spreading area and shape of individual cells. The effects of these factors on the cellular uptake of poly(N-(2-hydroxypropyl)methacrylamide)-based micelles were investigated at a single-cell level. Human carcinoma MCF-7 and A549 cells as well as normal Hs-27 and MRC-5 fibroblasts were cultured on micropatterned surfaces. MCF-7 and A549 cells, both with larger sizes, had a higher total micelle uptake. However, the uptake of Hs-27 and MRC-5 cells decreased with increasing spreading area. In terms of cell shapes, MCF-7 and A549 cells with round shapes showed a higher micelle uptake, while those with a square shape had a lower cellular uptake. On the other hand, Hs-27 and MRC-5 cells showed opposite behaviors. The results indicate that the geometry of cells can influence the nanoparticle uptake and may shed light on the design of functional nanoparticles.
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4
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Ghosh B, Biswas S. Polymeric micelles in cancer therapy: State of the art. J Control Release 2021; 332:127-147. [PMID: 33609621 DOI: 10.1016/j.jconrel.2021.02.016] [Citation(s) in RCA: 228] [Impact Index Per Article: 76.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 02/12/2021] [Accepted: 02/12/2021] [Indexed: 02/08/2023]
Abstract
In recent years, polymeric micelles have been extensively utilized in pre-clinical studies for delivering poorly soluble chemotherapeutic agents in cancer. Polymeric micelles are formed via self-assembly of amphiphilic polymers in facile manners. The wide availability of hydrophobic and, to some extent, hydrophilic polymeric blocks allow researchers to explore various polymeric combinations for optimum loading, stability, systemic circulation, and delivery to the target cancer tissues. Moreover, polymeric micelles could easily be tailor-made by increasing and decreasing the number of monomers in each polymeric chain. Some of the widely accepted hydrophobic polymers are poly(lactide) (PLA), poly(caprolactone) (PCL), poly(lactide-co-glycolide) (PLGA), polyesters, poly(amino acids), lipids. The hydrophilic polymers used to wrap the hydrophobic core are poly(ethylene glycol), poly(oxazolines), chitosan, dextran, and hyaluronic acids. Drugs could be conjugated to polymers at the distal ends to prepare pharmacologically active polymeric systems that impart enhanced solubility and stability of the conjugates and provide an opportunity for combination drug delivery. Their nano-size enables them to accumulate to the tumor microenvironment via the Enhanced Permeability and Retention (EPR) effect. Moreover, the stimuli-sensitive breakdown provides the micelles an effective means to deliver the therapeutic cargo effectively. The tumor micro-environmental stimuli are pH, hypoxia, and upregulated enzymes. Externally applied stimuli to destroy micellar disassembly to release the payload include light, ultrasound, and temperature. This article delineates the current trend in developing polymeric micelles combining various block polymeric scaffolds. The development of stimuli-sensitive micelles to achieve enhanced therapeutic activity are also discussed.
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Affiliation(s)
- Balaram Ghosh
- Nanomedicine Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Medchal, Hyderabad 500078, India
| | - Swati Biswas
- Nanomedicine Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Medchal, Hyderabad 500078, India.
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5
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Reversible stimuli-responsive nanomaterials with on-off switching ability for biomedical applications. J Control Release 2019; 314:162-176. [DOI: 10.1016/j.jconrel.2019.10.036] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 10/17/2019] [Accepted: 10/18/2019] [Indexed: 12/14/2022]
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6
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Luo T, Han J, Zhao F, Pan X, Tian B, Ding X, Zhang J. Redox-sensitive micelles based on retinoic acid modified chitosan conjugate for intracellular drug delivery and smart drug release in cancer therapy. Carbohydr Polym 2019; 215:8-19. [DOI: 10.1016/j.carbpol.2019.03.064] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 02/19/2019] [Accepted: 03/17/2019] [Indexed: 12/16/2022]
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7
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Bordat A, Boissenot T, Nicolas J, Tsapis N. Thermoresponsive polymer nanocarriers for biomedical applications. Adv Drug Deliv Rev 2019; 138:167-192. [PMID: 30315832 DOI: 10.1016/j.addr.2018.10.005] [Citation(s) in RCA: 203] [Impact Index Per Article: 40.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 09/12/2018] [Accepted: 10/08/2018] [Indexed: 12/21/2022]
Abstract
Polymer nanocarriers allow drug encapsulation leading to fragile molecule protection from early degradation/metabolization, increased solubility of poorly soluble drugs and improved plasmatic half-life. However, efficiently controlling the drug release from nanocarriers is still challenging. Thermoresponsive polymers exhibiting either a lower critical solution temperature (LCST) or an upper critical solution temperature (UCST) in aqueous medium may be the key to build spatially and temporally controlled drug delivery systems. In this review, we provide an overview of LCST and UCST polymers used as building blocks for thermoresponsive nanocarriers for biomedical applications. Recent nanocarriers based on thermoresponsive polymer exhibiting unprecedented features useful for biomedical applications are also discussed. While LCST nanocarriers have been studied for over two decades, UCST nanocarriers have recently emerged and already show great potential for effective thermoresponsive drug release.
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Affiliation(s)
- Alexandre Bordat
- Institut Galien Paris-Sud, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 92290 Châtenay-Malabry, France
| | - Tanguy Boissenot
- Institut Galien Paris-Sud, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 92290 Châtenay-Malabry, France
| | - Julien Nicolas
- Institut Galien Paris-Sud, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 92290 Châtenay-Malabry, France
| | - Nicolas Tsapis
- Institut Galien Paris-Sud, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 92290 Châtenay-Malabry, France.
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8
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Brzeziński M, Wedepohl S, Kost B, Calderón M. Nanoparticles from supramolecular polylactides overcome drug resistance of cancer cells. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.08.060] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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9
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Kalhapure RS, Renukuntla J. Thermo- and pH dual responsive polymeric micelles and nanoparticles. Chem Biol Interact 2018; 295:20-37. [DOI: 10.1016/j.cbi.2018.07.016] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 06/28/2018] [Accepted: 07/19/2018] [Indexed: 12/31/2022]
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10
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Khine YY, Ganda S, Stenzel MH. Covalent Tethering of Temperature Responsive pNIPAm onto TEMPO-Oxidized Cellulose Nanofibrils via Three-Component Passerini Reaction. ACS Macro Lett 2018; 7:412-418. [PMID: 35619354 DOI: 10.1021/acsmacrolett.8b00051] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A critical challenge in the application of functional cellulose fibrils is to perform efficient surface modification without disrupting the original properties. Three-component Passerini reaction (Passerini 3-CR) is regarded as an effective functionalization approach which can be carried out under mild and fast reaction condition. In this study, we investigated the application of Passerini 3-CR for the synthesis of thermoresponsive cellulose fibrils by covalently tethering poly(N-isopropylacrylamide) in aqueous condition at ambient temperature. The three components, a TEMPO-oxidized cellulose nanofiber bearing carboxylic acid moieties (TOCN-COOH), a functionalized polymer with aldehyde group (pNIPAm-COH) and a cyclohexyl isocyanide, were reacted in one pot resulting in 36% of grafting efficiency within 30 min. The chemical coupling was evidenced by improved aqueous dispersibility, which was further confirmed by FT-IR, TGA, UV-vis, and turbidity study. It was observed that the grafting efficiency is strongly dependent on the chain length of the polymer. Furthermore, AFM and X-ray diffraction measurements affirmed the suitability of the proposed method for chemical modification of cellulose nanofibers without significantly compromising the original morphology and structural integrity.
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Affiliation(s)
- Yee Yee Khine
- Center for Advanced Macromolecular Design, School of Chemistry, The University of New South Wales, Sydney, Australia
| | - Sylvia Ganda
- Center for Advanced Macromolecular Design, School of Chemistry, The University of New South Wales, Sydney, Australia
| | - Martina H. Stenzel
- Center for Advanced Macromolecular Design, School of Chemistry, The University of New South Wales, Sydney, Australia
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11
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Length effect of methoxy poly(ethylene oxide)- b -[poly(ε-caprolactone)- g -poly(methacrylic acid)] copolymers on cisplatin delivery. Colloids Surf B Biointerfaces 2017; 156:243-253. [DOI: 10.1016/j.colsurfb.2017.05.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 05/09/2017] [Accepted: 05/11/2017] [Indexed: 12/16/2022]
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12
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Chmielarz P. Synthesis of inositol-based star polymers through low ppm ATRP methods. POLYM ADVAN TECHNOL 2017. [DOI: 10.1002/pat.4065] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Paweł Chmielarz
- Department of Physical Chemistry, Faculty of Chemistry; Rzeszow University of Technology; Al. Powstańców Warszawy 6 35-959 Rzeszow Poland
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13
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Double stimuli-responsive polymer systems: How to use crosstalk between pH- and thermosensitivity for drug depots. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.09.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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14
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Ryskulova K, Rao Gulur Srinivas A, Kerr-Phillips T, Peng H, Barker D, Travas-Sejdic J, Hoogenboom R. Multiresponsive Behavior of Functional Poly(p-phenylene vinylene)s in Water. Polymers (Basel) 2016; 8:E365. [PMID: 30974643 PMCID: PMC6432201 DOI: 10.3390/polym8100365] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 09/29/2016] [Accepted: 10/10/2016] [Indexed: 12/12/2022] Open
Abstract
The multiresponsive behavior of functionalized water-soluble conjugated polymers (CPs) is presented with potential applications for sensors. In this study, we investigated the aqueous solubility behavior of water-soluble CPs with high photoluminescence and with a particular focus on their pH and temperature responsiveness. For this purpose, two poly(phenylene vinylene)s (PPVs)-namely 2,5-substituted PPVs bearing both carboxylic acid and methoxyoligoethylene glycol units-were investigated, with different amount of carboxylic acid units. Changes in the pH and temperature of polymer solutions led to a response in the fluorescence intensity in a pH range from 3 to 10 and for temperatures ranging from 10 to 85 °C. Additionally, it is demonstrated that the polymer with the largest number of carboxylic acid groups displays upper critical solution temperature (UCST)-like thermoresponsive behavior in the presence of a divalent ion like Ca2+. The sensing capability of these water-soluble PPVs could be utilized to design smart materials with multiresponsive behavior in biomedicine and soft materials.
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Affiliation(s)
- Kanykei Ryskulova
- Supramolecular Chemistry Group, Department of Organic and Macromolecular Chemistry, Faculty of Science, Ghent University, Krijgslaan 281 S4, Ghent B-9000, Belgium.
| | - Anupama Rao Gulur Srinivas
- Polymer Electronics Research Center, School of Chemical Sciences, The University of Auckland, Private Bag 92019, Auckland, New Zealand.
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, P.O. Box 600, Wellington, New Zealand.
| | - Thomas Kerr-Phillips
- Polymer Electronics Research Center, School of Chemical Sciences, The University of Auckland, Private Bag 92019, Auckland, New Zealand.
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, P.O. Box 600, Wellington, New Zealand.
| | - Hui Peng
- Key Laboratory of Polarized Materials and Devices, Ministry of Education, East China Normal University, Shanghai 200062, China.
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, Shanxi, China.
| | - David Barker
- Polymer Electronics Research Center, School of Chemical Sciences, The University of Auckland, Private Bag 92019, Auckland, New Zealand.
| | - Jadranka Travas-Sejdic
- Polymer Electronics Research Center, School of Chemical Sciences, The University of Auckland, Private Bag 92019, Auckland, New Zealand.
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, P.O. Box 600, Wellington, New Zealand.
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Department of Organic and Macromolecular Chemistry, Faculty of Science, Ghent University, Krijgslaan 281 S4, Ghent B-9000, Belgium.
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15
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Ng WS, Forbes E, Franks GV, Connal LA. Xanthate-Functional Temperature-Responsive Polymers: Effect on Lower Critical Solution Temperature Behavior and Affinity toward Sulfide Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:7443-7451. [PMID: 27434760 DOI: 10.1021/acs.langmuir.6b00211] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Xanthate-functional polymers represent an exciting opportunity to provide temperature-responsive materials with the ability to selectively attach to specific metals, while also modifying the lower critical solution temperature (LCST) behavior. To investigate this, random copolymers of poly(N-isopropylacrylamide) (PNIPAM) with xanthate incorporations ranging from 2 to 32% were prepared via free radical polymerization. Functionalization with 2% xanthate increased the LCST by 5 °C relative to the same polymer without xanthate. With increasing xanthate composition, the transition temperature increased and the transition range broadened until a critical composition of the hydrophilic xanthate groups (≥18%) where the transition disappeared completely. The adsorption of the polymers at room temperature onto chalcopyrite (CuFeS2) surfaces increased with xanthate composition, while adsorption onto quartz (SiO2) was negligible. These findings demonstrate the affinity of these functional smart polymers toward copper iron sulfide relative to quartz surfaces, presumably due to the interactions between xanthate and specific metal centers.
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Affiliation(s)
- Wei Sung Ng
- Chemical and Biomolecular Engineering, University of Melbourne , Parkville, VIC 3010, Australia
- CSIRO Mineral Resources Flagship, Clayton, VIC 3168, Australia
| | | | - George V Franks
- Chemical and Biomolecular Engineering, University of Melbourne , Parkville, VIC 3010, Australia
| | - Luke A Connal
- Chemical and Biomolecular Engineering, University of Melbourne , Parkville, VIC 3010, Australia
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16
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Liu J, Liu Q, Yang C, Sun Y, Zhang Y, Huang P, Zhou J, Liu Q, Chu L, Huang F, Deng L, Dong A, Liu J. cRGD-Modified Benzimidazole-based pH-Responsive Nanoparticles for Enhanced Tumor Targeted Doxorubicin Delivery. ACS APPLIED MATERIALS & INTERFACES 2016; 8:10726-10736. [PMID: 27058429 DOI: 10.1021/acsami.6b01501] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Finding a smart cancer drug delivery carrier with long blood circulation, enhanced cancer targeting, and quick drug release in tumors is critical for efficient cancer chemotherapy. Herein, we design a cRGD-polycarboxybetaine methacrylate-b-polybenzimidazole methacrylate (cRGD-PCB-b-PBBMZ) copolymer to self-assemble into smart drug-loaded nanoparticles (cRGD-PCM NPs) which can target αvβ3 integrin overexpressed cancer tissue by cRGD peptide unit and release drug quickly in cancer cells by protonation of benzimidazole groups. The outer PCB layer can resist protein adhesion, and there are only about 10% of proteins in mouse serum adhered to the surface of PCM NPs. With the pKa value of 5.08 of the benzimidazole units, DOX can be released from NPs in pH 5.0 PBS. cRGD-PCM NPs can bring more DOX into HepG2 cells than nontargeting PCM NPs, and there has high DOX release rate in HepG2 cells because of the protonation of benzimidazole groups in endosome and lysosome. MTT assay verifies that higher cellular uptake of DOX causes higher cytotoxicity. Furthermore, the results of ex vivo imaging studies confirm that cRGD-PCM/DOX NPs can successfully deliver DOX into tumor tissue from the injection site. Therefore, the multifunctional cRGD-PCM NPs show great potential as novel nanocarriers for targeting cancer chemotherapy.
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Affiliation(s)
- Jinjian Liu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science, Peking Union Medical College , Tianjin 300192, People's Republic of China
| | | | - Cuihong Yang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science, Peking Union Medical College , Tianjin 300192, People's Republic of China
| | - Yu Sun
- Department of Polymer Science and Technology, School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072, People's Republic of China
| | - Yumin Zhang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science, Peking Union Medical College , Tianjin 300192, People's Republic of China
| | - Pingsheng Huang
- Department of Polymer Science and Technology, School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072, People's Republic of China
| | - Junhui Zhou
- Department of Polymer Science and Technology, School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072, People's Republic of China
| | - Qiang Liu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science, Peking Union Medical College , Tianjin 300192, People's Republic of China
| | - Liping Chu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science, Peking Union Medical College , Tianjin 300192, People's Republic of China
| | - Fan Huang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science, Peking Union Medical College , Tianjin 300192, People's Republic of China
| | - Liandong Deng
- Department of Polymer Science and Technology, School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072, People's Republic of China
| | - Anjie Dong
- Department of Polymer Science and Technology, School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072, People's Republic of China
| | - Jianfeng Liu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science, Peking Union Medical College , Tianjin 300192, People's Republic of China
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17
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de Jongh PAJM, Mortiboy A, Sulley GS, Bennett MR, Anastasaki A, Wilson P, Haddleton DM, Kempe K. Dual Stimuli-Responsive Comb Polymers from Modular N-Acylated Poly(aminoester)-Based Macromonomers. ACS Macro Lett 2016; 5:321-325. [PMID: 35614728 DOI: 10.1021/acsmacrolett.5b00904] [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
We report the synthesis of dual-responsive N-acylated poly(aminoester) (NPAE)-based comb polymers with varying molecular composition and monomer sequence via a combination of spontaneous zwitterionic copolymerization and redox-initiated reversible addition-fragmentation chain transfer (RRAFT) polymerization. NPAE macromonomers were synthesized from different nucleophilic (MN), for example, 2-ethyl-2-oxazoline (EtOx) or 2-ethyl-2-oxazine (EtOz), and electrophilic monomers (ME), for example, acrylic acid (AA) or 2-carboxyethyl acrylate (CEA), to tune the hydrophilicity and sequence of the systems. The latter was found to influence the thermal properties and stability of the respective comb polymers. Turbidity investigations in aqueous solution revealed a dual-responsive behavior of the comb polymers being responsive to both temperature and pH changes due to ω-carboxylic end groups of the NPAE-based macromonomers. Additional methylene groups in the NPAE backbone rendered the corresponding systems more hydrophobic and, hence, decreased the cloud point temperatures and, at the same time, increased the pH values (at constant temperature) at which the polymer phase separates from the aqueous solution.
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Affiliation(s)
| | - Alice Mortiboy
- Department
of Chemistry, University of Warwick, CV4 7AL, Coventry, United Kingdom
| | - Greg S. Sulley
- Department
of Chemistry, University of Warwick, CV4 7AL, Coventry, United Kingdom
| | - Mechelle R. Bennett
- Department
of Chemistry, University of Warwick, CV4 7AL, Coventry, United Kingdom
| | - Athina Anastasaki
- Department
of Chemistry, University of Warwick, CV4 7AL, Coventry, United Kingdom
| | - Paul Wilson
- Department
of Chemistry, University of Warwick, CV4 7AL, Coventry, United Kingdom
| | - David M. Haddleton
- Department
of Chemistry, University of Warwick, CV4 7AL, Coventry, United Kingdom
| | - Kristian Kempe
- Department
of Chemistry, University of Warwick, CV4 7AL, Coventry, United Kingdom
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18
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Coordinated pH/redox dual-sensitive and hepatoma-targeted multifunctional polymeric micelle system for stimuli-triggered doxorubicin release: Synthesis, characterization and in vitro evaluation. Int J Pharm 2016; 501:221-35. [DOI: 10.1016/j.ijpharm.2016.02.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 01/22/2016] [Accepted: 02/02/2016] [Indexed: 12/15/2022]
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19
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Weaver LG, Stockmann R, Postma A, Thang SH. Multi-responsive (diethylene glycol)methyl ether methacrylate (DEGMA)-based copolymer systems. RSC Adv 2016. [DOI: 10.1039/c6ra14425j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
RAFT polymerisation was used to synthesise stimuli-responsive DEGMA-based copolymer systems, and their solution properties and aggregation behaviour were then studied.
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Affiliation(s)
| | | | | | - San H. Thang
- CSIRO Manufacturing
- Clayton South
- Australia
- Monash University
- School of Chemistry
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20
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Truong NP, Whittaker MR, Anastasaki A, Haddleton DM, Quinn JF, Davis TP. Facile production of nanoaggregates with tuneable morphologies from thermoresponsive P(DEGMA-co-HPMA). Polym Chem 2016. [DOI: 10.1039/c5py01467k] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
RAFT-mediated emulsion polymerization of styrene and subsequent morphological transition produces nanoaggregates with tuneable morphologies.
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Affiliation(s)
- Nghia P. Truong
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology
- Monash Institute of Pharmaceutical Sciences
- Monash University
- Melbourne
- Australia
| | - Michael R. Whittaker
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology
- Monash Institute of Pharmaceutical Sciences
- Monash University
- Melbourne
- Australia
| | - Athina Anastasaki
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology
- Monash Institute of Pharmaceutical Sciences
- Monash University
- Melbourne
- Australia
| | - David M. Haddleton
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology
- Monash Institute of Pharmaceutical Sciences
- Monash University
- Melbourne
- Australia
| | - John F. Quinn
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology
- Monash Institute of Pharmaceutical Sciences
- Monash University
- Melbourne
- Australia
| | - Thomas P. Davis
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology
- Monash Institute of Pharmaceutical Sciences
- Monash University
- Melbourne
- Australia
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