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Madhu V, Sivakalai M, Kalarical Janardhanan S, Madurai SL. A new-fangled horizon in leather process to sidestep toxic chrome and formaldehyde using hyperbranched polymer. Chemosphere 2022; 304:135355. [PMID: 35714952 DOI: 10.1016/j.chemosphere.2022.135355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 06/03/2022] [Accepted: 06/13/2022] [Indexed: 06/15/2023]
Abstract
A novel chrome-free tanning and formaldehyde-free post tanning process with PEG-melamine base hyperbranched polymer by complexing aluminum (Al3+) present in aluminum sulfate for eco-friendly tanning applications. The hyperbranched polymers PEGM-400-C-Al and PEGM-600-C-Al were synthesized and characterized by FT-IR, NMR, UV, and XRD. The molecular weight of polymers was assessed by GPC and subjected to the leather process. The processed crust leathers were analyzed for physical characteristics by tensile strength, tear strength, elongation, and quality assessments by hand evaluation by experts. FE-SEM analyzed collagen fibers and fiber splitting of goat skin, and COD, BOD, and total solid in spent liquor were analyzed and compared. The highlighting feature of hyperbranched polymers is (a) Improved shrinkage temperature (Ts) (85 ± 1 °C), (b) Improved physical-mechanical properties (c) Better BOD, COD, and total solids over the aluminum sulfate tanning process. This study confirmed that hyperbranched polymer is effective for tanning and post-tanning leather, which obviates the need to use toxic chromium and formaldehyde for tanning leathers.
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Affiliation(s)
- Venkatesh Madhu
- Polymer Science and Technology, Council of Scientific and Industrial Research (CSIR) - Central Leather Research Institute (CLRI), Adyar, Chennai, 600020, India; Department of Leather Technology, (Housed at CSIR- Central Leather Research Institute), Alagappa College of Technology, Anna University, Adyar, Chennai, 600020, India
| | - Mayakrishnan Sivakalai
- Organic & Bioorganic Chemistry Laboratory, CSIR-Central Leather Research Institute, Chennai, 600020, India
| | - Sreeram Kalarical Janardhanan
- Centre for Analysis, Testing, Evaluation& Reporting Services (CATERS) Division, Council of Scientific and Industrial Research (CSIR) - Central Leather Research Institute (CLRI), Adyar, Chennai, 600020, India
| | - Suguna Lakshmi Madurai
- Polymer Science and Technology, Council of Scientific and Industrial Research (CSIR) - Central Leather Research Institute (CLRI), Adyar, Chennai, 600020, India; Department of Leather Technology, (Housed at CSIR- Central Leather Research Institute), Alagappa College of Technology, Anna University, Adyar, Chennai, 600020, India.
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Ahmadi Y, Kim KH. Hyperbranched polymers as superior adsorbent for the treatment of dyes in water. Adv Colloid Interface Sci 2022; 302:102633. [PMID: 35259566 DOI: 10.1016/j.cis.2022.102633] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/25/2022] [Accepted: 02/27/2022] [Indexed: 01/22/2023]
Abstract
The effective control on environmental pollutants is crucial for the proper management of diverse environmental systems (e.g., soil, water, and air). In this respect, the utility of various functional materials such as hyperbranched polymers (HPs) has been recognized due to their great potentil as adsorbent for the mitigation of numerous environmental pollutants. Here, we highlight the latest progress achieved in the design and construction of HPs with high adsorption potentials. We focus on adsorption mechanisms, functionalization methods, the role of functional groups in adsorption capacity, and the choice of HPs in adsorption of cationic and anionic dyes. Recent published reports are reviewed to quantify and qualify the removal efficiency of pollutants through adsorption. We also evaluate the adsorbing efficiency of the constructed HPs and compared their performance with other such systems. The utilization potential of new materials (magnetic, polar, and biological) is highlighted along with the methods needed for their preparation and/or modification (surface, end-group, and zwitterionic) for the construction of efficient adsorbing systems. Finally, the advantages and limitations of adsorbing systems are described along with the existing challenges to help establish guidelines for future research. This article is thus expected to offer new path and guidance for developing advanced HP-based adsorbents.
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Affiliation(s)
- Younes Ahmadi
- Department of Analytical Chemistry, Kabul University, Kabul 1001, Afghanistan; Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea.
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Faisal W, Almomani F. A critical review of the development and demulsification processes applied for oil recovery from oil in water emulsions. Chemosphere 2022; 291:133099. [PMID: 34848221 DOI: 10.1016/j.chemosphere.2021.133099] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 10/19/2021] [Accepted: 11/25/2021] [Indexed: 06/13/2023]
Abstract
The formation of stable emulsions is a fundamental problem in oil industry that can result in a sequence of environmental and operational problems. Chemical demulsification is extensively applied for the recovery of oil from water as well as water from oil. This review introduces different chemical demulsifiers applied for the demulsification and recovery of oil from oil in water (O/W) emulsions. Main types of surfactants (anionic, cationic, nonionics and amphoteric) involved in the formation of emulsions and enhances their stability were discussed. Promising demulsifiers such as nanoparticle (NP), hyperbranched polymers, and ionic liquids (IL), which achieved high oil recovery rate, parameters influencing demulsification efficiency and demulsification mechanisms were explored. Lastly, improvements, challenges, and new changes being made to chemical demulsifiers were underlined. Functionalized magnetic nanoparticles and hyperbranched polymers were very effective in recovering oil from O/W emulsions with an efficiency >95%. Polymers with highly hydrophilic content and high molecular weight can achieve excellent oil recovery rates due to higher interfacial activity, higher dispersion, and presence of specific functional groups. Although ionic liquids could achieve oil recovery up to 90%, high cost limits their applications. NPs showed excellent oil recovery behavior at low concentrations and ambient temperature. Demulsification efficiency of NPs can be enhanced by functionalize with other components (e.g., polymers and surfactants), while service life can be extend by silica coating. Future challenges include scaling up the use of NPs in oil recovery process and highlighting contrasts between lab-scale and field-scale applications.
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Affiliation(s)
- Wamda Faisal
- College of Engineering, Department of Chemical Engineering, Qatar University, P.O. Box: 2713, Doha, Qatar
| | - Fares Almomani
- College of Engineering, Department of Chemical Engineering, Qatar University, P.O. Box: 2713, Doha, Qatar.
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Blackburn C, Tai H, Salerno M, Wang X, Senan C, Ratcliffe I, Hartsuiker E, Wang W. Data presenting the synthesis of three novel stimuli responsive hyperbranched polymers synthesised via RAFT polymerisation and the bio conjugation of folic acid. Data Brief 2019; 28:104861. [PMID: 31872000 PMCID: PMC6909163 DOI: 10.1016/j.dib.2019.104861] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 11/12/2019] [Accepted: 11/13/2019] [Indexed: 11/29/2022] Open
Abstract
The data presented in this manuscript presents the characterisation spectra of three hyperbranched polymers as discussed in the paper “Folic Acid and Rhodamine Labelled pH Responsive Hyperbranched Polymers: synthesis, characterisation and cell uptake studies” [1]. Characterisation of polymers was performed via 1H Nuclear Magnetic Resonance (1H NMR) and Size Exclusion Chromatography (SEC). pH responsive characteristics were observed via Dynamic Light Scattering (DLS). The data for characterisation of folate conjugated hyperbranched polymer is presented as 1H NMR, Ultra Violet Visible (UV-VIS) spectra and DLS measurements. Further data is presented detailing the experiments for the synthesis of monomers 2-propyl acrylic acid (PAA) and disulfide diacrylate (DSDA), with the full synthesis of folic acid-poly (ethylene glycol) (PEG) linker, rhodamine B ethylenediamine linker and bioconjugation reactions also detailed.
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Affiliation(s)
- Chester Blackburn
- School of Natural Sciences, Bangor University, Deiniol Road, Bangor, Gwynedd, LL57 2UW, UK
| | - Hongyun Tai
- School of Natural Sciences, Bangor University, Deiniol Road, Bangor, Gwynedd, LL57 2UW, UK
- Corresponding author.
| | - Martina Salerno
- NWCR Institute, School of Medical Sciences, Bangor University, Deiniol Road, Bangor, Gwynedd, LL57 2UW, UK
| | - Xi Wang
- Charles Institute of Dermatology, School of Medicine, University College Dublin, Dublin 4, Ireland
| | - Chandra Senan
- Centre for Water Soluble Polymers, Wrexham Glyndwr University, Wrexham, LL11 2AW, Wales, UK
| | - Ian Ratcliffe
- Centre for Water Soluble Polymers, Wrexham Glyndwr University, Wrexham, LL11 2AW, Wales, UK
| | - Edgar Hartsuiker
- NWCR Institute, School of Medical Sciences, Bangor University, Deiniol Road, Bangor, Gwynedd, LL57 2UW, UK
| | - Wenxin Wang
- Charles Institute of Dermatology, School of Medicine, University College Dublin, Dublin 4, Ireland
- Corresponding author.
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Ghadikolaei NF, Kowsari E, Balou S, Moradi A, Taromi FA. Preparation of porous biomass-derived hydrothermal carbon modified with terminal amino hyperbranched polymer for prominent Cr(VI) removal from water. Bioresour Technol 2019; 288:121545. [PMID: 31200346 DOI: 10.1016/j.biortech.2019.121545] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 05/21/2019] [Accepted: 05/23/2019] [Indexed: 06/09/2023]
Abstract
Herein, a series of functionalized hydrochars with high density of nitrogen-containing functional groups were engineered by co-processing of terminal amino hyperbranched polymer and walnut shell biomass in the hydrothermal carbonization media. Hydrothermal Carbonization with optimized key parameters was implemented to determine the impact of added polymer to the biomass on the properties of the obtained hydrochars. Consequently, the optimum hydrochar which was achieved with the values of 250 °C, 60 min, and 50% (w/w) for temperature, time, and polymer/biomass weight ratio, demonstrated a highly improved surface area of 544 m2.g-1 and the highest adsorption capacity for Cr(VI) removal which was obtained from Freundlich isotherm model and described by the pseudo-second-order kinetic model to be 363.22 mg.g-1 (at pH = 2.0). This work suggests that the co-hydrothermal carbonization promotes the uniform incorporation of polymers into the hydrochar matrix and provides adsorbents for the effective removal of Cr(VI) from water.
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Affiliation(s)
| | - Elaheh Kowsari
- Department of Chemistry, Amirkabir University of Technology, Tehran, Iran.
| | - Salar Balou
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Abbas Moradi
- Department of Chemistry, Islamic Azad University, Tehran South Branch, Tehran, Iran
| | - Faramarz Afshar Taromi
- Department of Polymer Engineering & Color Technology, Amirkabir University of Technology, Tehran, Iran
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Xu Q, A S, Gao Y, Guo L, Creagh-Flynn J, Zhou D, Greiser U, Dong Y, Wang F, Tai H, Liu W, Wang W, Wang W. A hybrid injectable hydrogel from hyperbranched PEG macromer as a stem cell delivery and retention platform for diabetic wound healing. Acta Biomater 2018; 75:63-74. [PMID: 29803782 DOI: 10.1016/j.actbio.2018.05.039] [Citation(s) in RCA: 164] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 05/09/2018] [Accepted: 05/24/2018] [Indexed: 12/15/2022]
Abstract
The injectable hydrogel with desirable biocompatibility and tunable properties can improve the efficacy of stem cell-based therapy. However, the development of injectable hydrogel remains a great challenge due to the restriction of crosslinking efficiency, mechanical properties, and potential toxicity. Here, we report that a new injectable hydrogel system was fabricated from hyperbranched multi-acrylated poly(ethylene glycol) macromers (HP-PEGs) and thiolated hyaluronic acid (HA-SH) and used as a stem cell delivery and retention platform. The new HP-PEGs were synthesized via in situ reversible addition fragmentation chain transfer (RAFT) polymerization using an FDA approved anti-alcoholic drug-Disulfiram (DS) as the RAFT agent precursor. HP-PEGs can form injectable hydrogels with HA-SH rapidly via thiol-ene click reaction under physiological conditions. The hydrogels exhibited stable mechanical properties, non-swelling and anti-fouling properties. Hydrogels encapsulating adipose-derived stem cells (ADSCs) have demonstrated promising regenerative capabilities such as the maintenance of ADSCs' stemness and secretion abilities. The ADSCs embedded hydrogels were tested on the treatment of diabetic wound in a diabetic murine animal model, showing enhanced wound healing. STATEMENT OF SIGNIFICANCE Diabetic wounds, which are a severe type of diabetes, have become one of the most serious clinical problems. There is a great promise in the delivery of adipose stem cells into wound sites using injectable hydrogels that can improve diabetic wound healing. Due to the biocompatibility of poly(ethylene glycol) diacrylate (PEGDA), we developed an in situ RAFT polymerization approach using anti-alcoholic drug-Disulfiram (DS) as a RAFT agent precursor to achieve hyperbranched PEGDA (HP-PEG). HP-PEG can form an injectable hydrogel by crosslinking with thiolated hyaluronic acid (HA-SH). ADSCs can maintain their regenerative ability and be delivered into the wound sites. Hence, diabetic wound healing process was remarkably promoted, including inhibition of inflammation, enhanced angiogenesis and re-epithelialization. Taken together, the ADSCs-seeded injectable hydrogel may be a promising candidate for diabetic wound treatment.
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Nguyen TH, Nguyen TA, Tran HM, Nguyen LTT, Luu AT, Lee JY, Nguyen HT. N-Benzoyl dithieno[3,2-b:2',3'-d]pyrrole-based hyperbranched polymers by direct arylation polymerization. Chem Cent J 2017; 11:135. [PMID: 29270833 PMCID: PMC5740055 DOI: 10.1186/s13065-017-0367-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 12/14/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Although poly(N-acyl dithieno[3,2-b:2',3'-d]pyrrole)s have attracted great attention as a new class of conducting polymers with highly stabilized energy levels, hyperbranched polymers based on this monomer type have not yet been studied. Thus, this work aims at the synthesis of novel hyperbranched polymers containing N-benzoyl dithieno[3,23,2-b:2',3'-d]pyrrole acceptor unit and 3-hexylthiophene donor moiety via the direct arylation polymerization method. Their structures, molecular weights and thermal properties were characterized via 1H NMR and FTIR spectroscopies, GPC, TGA, DSC and XRD measurements, and the optical properties were investigated by UV-vis and fluorescence spectroscopies. RESULTS Hyperbranched conjugated polymers containing N-benzoyl dithieno[3,23,2-b:2',3'-d]pyrrole acceptor unit and 3-hexylthiophene donor moiety, linked with either triphenylamine or triphenylbenzene as branching unit, were obtained via direct arylation polymerization of the N-benzoyl dithieno[3,23,2-b:2',3'-d]pyrrole, 2,5-dibromo 3-hexylthiophene and tris(4-bromophenyl)amine (or 1,3,5-tris(4-bromophenyl)benzene) monomers. Organic solvent-soluble polymers with number-average molecular weights of around 18,000 g mol-1 were obtained in 80-92% yields. The DSC and XRD results suggested that the branching structure hindered the stacking of polymer chains, leading to crystalline domains with less ordered packing in comparison with the linear analogous polymers. The results revealed that the hyperbranched polymer with triphenylbenzene as the branching unit exhibited a strong red-shift of the maximum absorption wavelength, attributed to a higher polymer stacking order as a result of the planar structure of triphenylbenzene. CONCLUSION Both hyperbranched polymers with triphenylamine/triphenylbenzene as branching moieties exhibited high structural order in thin films, which can be promising for organic solar cell applications. The UV-vis absorption of the hyperbranched polymer containing triphenylbenzene as branching unit was red-shifted as compared with the triphenylamine-containing polymer, as a result of a higher chain packing degree.
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Affiliation(s)
- Tam Huu Nguyen
- Faculty of Materials Technology, Ho Chi Minh City University of Technology (HCMUT), Vietnam National University, 268 Ly Thuong Kiet, District 10, Ho Chi Minh City, Vietnam
| | - Thu Anh Nguyen
- Faculty of Materials Technology, Ho Chi Minh City University of Technology (HCMUT), Vietnam National University, 268 Ly Thuong Kiet, District 10, Ho Chi Minh City, Vietnam
- Department of Chemical Engineering, Sungkyunkwan University, Suwon, 16419 Republic of Korea
| | - Hoan Minh Tran
- Faculty of Materials Technology, Ho Chi Minh City University of Technology (HCMUT), Vietnam National University, 268 Ly Thuong Kiet, District 10, Ho Chi Minh City, Vietnam
| | - Le-Thu T. Nguyen
- Faculty of Materials Technology, Ho Chi Minh City University of Technology (HCMUT), Vietnam National University, 268 Ly Thuong Kiet, District 10, Ho Chi Minh City, Vietnam
| | - Anh Tuan Luu
- Faculty of Materials Technology, Ho Chi Minh City University of Technology (HCMUT), Vietnam National University, 268 Ly Thuong Kiet, District 10, Ho Chi Minh City, Vietnam
| | - Jun Young Lee
- Department of Chemical Engineering, Sungkyunkwan University, Suwon, 16419 Republic of Korea
| | - Ha Tran Nguyen
- Faculty of Materials Technology, Ho Chi Minh City University of Technology (HCMUT), Vietnam National University, 268 Ly Thuong Kiet, District 10, Ho Chi Minh City, Vietnam
- Materials Technology Key Laboratory (Mtlab), Vietnam National University-Ho Chi Minh City, 268 Ly Thuong Kiet, District 10, Ho Chi Minh City, 70000 Vietnam
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Picco AS, Yameen B, Knoll W, Ceolín MR, Azzaroni O. Temperature-driven self-assembly of self-limiting uniform supraparticles from non-uniform unimolecular micelles. J Colloid Interface Sci 2016; 471:71-75. [PMID: 26990953 DOI: 10.1016/j.jcis.2016.03.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 03/03/2016] [Accepted: 03/03/2016] [Indexed: 01/31/2023]
Abstract
In this work, the self-assembly of non-uniform unimolecular micelles constituted of a hyperbranched polyester core decorated with a corona of thermoresponsive poly(N-isopropylacrylamide) (PNIPAm) chains has been studied. As revealed by dynamic light scattering (DLS), transmission electron microscopy (TEM) and small angle X-ray scattering (SAXS), these unimicelles form uniform supraparticles through a thermally-induced self-limited process, as well as exhibit molecular features commonly observed in PNIPAm-based gels. We believe that these results provide new insights into the application of stimuli-responsive polymeric materials as versatile building blocks to build up soft supraparticles displaying well-defined dimensional characteristics.
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Affiliation(s)
- Agustín S Picco
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Universidad Nacional de La Plata (UNLP), CONICET, CC. 16 Suc. 4, 1900 La Plata, Argentina
| | - Basit Yameen
- Laboratory of Nanomedicine and Biomaterials, Harvard Medical School, Boston, MA 02115, USA; Department of Chemistry, SBA School of Science and Engineering, LUMS, Lahore 54792, Pakistan
| | - Wolfgang Knoll
- Austrian Institute of Technology (AIT), Donau-City-Strasse 1, 1220 Vienna, Austria
| | - Marcelo R Ceolín
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Universidad Nacional de La Plata (UNLP), CONICET, CC. 16 Suc. 4, 1900 La Plata, Argentina.
| | - Omar Azzaroni
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Universidad Nacional de La Plata (UNLP), CONICET, CC. 16 Suc. 4, 1900 La Plata, Argentina.
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Breydo L, Newland B, Zhang H, Rosser A, Werner C, Uversky VN, Wang W. A hyperbranched dopamine-containing PEG-based polymer for the inhibition of α-synuclein fibrillation. Biochem Biophys Res Commun 2016; 469:830-5. [PMID: 26707645 PMCID: PMC4727786 DOI: 10.1016/j.bbrc.2015.12.060] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 12/15/2015] [Indexed: 01/06/2023]
Abstract
Aggregation of α-synuclein is believed to play an important role in Parkinson's disease and in other neurodegenerative maladies. Small molecule inhibitors of this process are among the most promising drug candidates for neurodegenerative diseases. Dendrimers have also been studied for anti-fibrillation applications but they can be difficult and expensive to synthetize. Here we show that RAFT polymerization can be used to produce a hyperbranched polyethylene glycol structure via a one-pot reaction. This polymer included a dopamine moiety, a known inhibitor of α-synuclein fibril formation. Dopamine within the polymer structure was capable of aggregation inhibition, although not to the same degree as free dopamine. This result opens up new avenues for the use of controlled radical polymerizations as a means of preparing hyperbranched polymers for anti-fibrillation activity, but shows that the incorporation of functional groups from known small molecules within polymers may alter their biological activity.
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Affiliation(s)
- Leonid Breydo
- Department of Molecular Medicine and Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, 33612 Tampa, FL, USA.
| | - Ben Newland
- Leibniz-Institute für Polymerforschung, Dresden, Germany; Brain Repair Group, School of Biosciences, Cardiff University, Cardiff, UK
| | - Hong Zhang
- The Charles Institute of Dermatology, School of Medicine and Medical Science, University College Dublin, Dublin, Ireland
| | - Anne Rosser
- Brain Repair Group, School of Biosciences, Cardiff University, Cardiff, UK
| | - Carsten Werner
- Leibniz-Institute für Polymerforschung, Dresden, Germany
| | - Vladimir N Uversky
- Department of Molecular Medicine and Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, 33612 Tampa, FL, USA; Institute for Biological Instrumentation, Russian Academy of Sciences, 142292 Pushchino, Moscow Region, Russia; Department of Biological Sciences, Faculty of Science, King Abdulaziz University, PO Box 80203, 21589 Jeddah, Saudi Arabia
| | - Wenxin Wang
- The Charles Institute of Dermatology, School of Medicine and Medical Science, University College Dublin, Dublin, Ireland; School of Materials Science and Engineering, Tianjin University, Tianjin, China
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Yu J, Deng H, Xie F, Chen W, Zhu B, Xu Q. The potential of pH-responsive PEG-hyperbranched polyacylhydrazone micelles for cancer therapy. Biomaterials 2014; 35:3132-44. [PMID: 24439411 DOI: 10.1016/j.biomaterials.2013.12.074] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Accepted: 12/20/2013] [Indexed: 11/16/2022]
Abstract
pH-responsive hyperbranched polymers have attracted much attention due to their unique properties for tumor-targeted drug delivery. In this study, we describe a pH-responsive drug carrier, poly (ethylene glycol) (PEG)-hyperbranched polyacylhydrazone (HPAH), which can form nanoscale micelles to be used as anti cancer drug carriers with pH-controlled drug release. The molecular structure of PEG-HPAH was confirmed by nuclear magnetic resonance spectroscopy (NMR) and Fourier transform infrared spectroscopy (FTIR). The drug-loaded micelles with a diameter of approximately 190 nm, were prepared using a dialysis method against PBS with a pH of 8.0. The drug-loaded micelles showed the desired pH-dependent drug release properties. The drug release levels were low at neutral and alkaline pH, but increased significantly with a decrease in the pH of the medium. Intracellular uptake results indicated that the PEG-HPAH-drug micelles could efficiently deliver chemotherapeutic drugs into the cells. In addition, it was found that the subcellular localization of the drug-loaded micelles was different from that of free drugs, in which the drug-loaded micelles were mainly in the cytoplasm. The docetaxel (DTX)-loaded PEG-HPAH micelles presented a high cytotoxic activity against tumor cells in vitro. When combined with the administration of glucose, the PEG-HPAH-DTX micelles exhibited a superior anti-tumor efficacy and a lower systemic toxicity in vivo. The biodistribution profile showed increased accumulated drug levels in tumor tissue and plasma in micelles treated group. The results indicate that the nanoscale PEG-HPAH-DTX micelles may serve as a selective tumor-targeting drug delivery system.
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Affiliation(s)
- Jingshuang Yu
- Department of Oral & Maxillofacial-Head Neck Oncology, Shanghai Ninth People's Hospital Affiliated Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Hongping Deng
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, China
| | - Furong Xie
- Department of Oral & Maxillofacial-Head Neck Oncology, Shanghai Ninth People's Hospital Affiliated Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Wantao Chen
- Department of Oral & Maxillofacial-Head Neck Oncology, Shanghai Ninth People's Hospital Affiliated Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Bangshang Zhu
- Instrumental Analysis Center, Shanghai Jiao Tong University, China.
| | - Qin Xu
- Department of Oral & Maxillofacial-Head Neck Oncology, Shanghai Ninth People's Hospital Affiliated Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China.
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