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Shen H, Liu Q, Liu D, Yu S, Wang X, Yang M. Fabrication of doxorubicin conjugated methoxy poly(ethylene glycol)-block-poly(ε-caprolactone) nanoparticles and study on their in vitro antitumor activities. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2021; 32:1703-1717. [PMID: 34075850 DOI: 10.1080/09205063.2021.1937462] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The purpose of this study was to develop a novel drug-polymer conjugation (mPEG-b-PCL-DOX) and study on its toxicity, bio-safety, and in vitro antitumor activity of mPEG-b-PCL-DOX. The polymer methoxy poly(ethylene glycol)-block-poly(ε-caprolactone) (mPEG-b-PCL) was prepared by ring-opening polymerization. Then, succinic anhydride was reacted with mPEG-b-PCL via esterification reaction to produce mPEG-b-PCL-COOH. Finally, the polymer mPEG-b-PCL-DOX was obtained by conjugating DOX to mPEG-b-PCL-COOH by amidation. The Fourier transform infrared spectroscopy (FTIR) and 1H nuclear magnetic resonance (1H NMR) spectra were used to study the structures of obtained polymers. Transmission electron microscope (TEM) and Dynamic laser scattering (DLS) were employed to monitor the morphology and size distribution of mPEG-b-PCL-DOX nanoparticles (NPs). The mPEG-b-PCL-DOX NPs were administrated to KM rats by intraperitoneal injection to study the bio-safety of final NPs. The cell uptake and in vitro anti-tumor activity of final NPs were carried out with HCT116 cells as models. FTIR and 1H NMR spectra confirmed the obtaining of mPEG-b-PCL-DOX. The fabricated NPs were in round shapes with an average diameter of 300 nm. These NPs did not induce hemolysis and physiological or pathological changes in rats's organs. Finally, cell teats showed that these NPs could be endocytosed by HCT 116 cells, and they had better anti-tumor effects than free DOX did. Therefore, the mPEG-b-PCL-DOX NPs had a potential application in anti-cancer therapy.
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Affiliation(s)
- Hongdan Shen
- Yancheng Industry Vocational Technology College, Yancheng, Jiangsu, China
| | - Quan Liu
- Xinxiang Medical University, Xinxiang, China
| | - Deju Liu
- Yancheng Industry Vocational Technology College, Yancheng, Jiangsu, China
| | - Shasha Yu
- Xinxiang Medical University, Xinxiang, China
| | - Xiao Wang
- Xinxiang Medical University, Xinxiang, China
| | - Mingbo Yang
- Xinxiang Medical University, Xinxiang, China
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Danke V, Reimann S, Binder WH, Gupta G, Beiner M. Tuning layered superstructures in precision polymers. Sci Rep 2020; 10:12119. [PMID: 32694581 PMCID: PMC7374706 DOI: 10.1038/s41598-020-68927-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Accepted: 06/11/2020] [Indexed: 11/09/2022] Open
Abstract
An approach to influence and control layered superstructures by varying the methylene sequence length between two consecutive functional groups in linear precision polymers containing 2,6-diaminopyridine (DAP) groups is presented. Layered superstructures with repeating units involving three monomeric units along the chain direction with very high coherence lengths upto 110 nm are observed in case of shorter alkyl segments, (16 and 18 [Formula: see text] units), while more conventional layer superstructures incorporating only one monomer are found for related polymers with 20 [Formula: see text] units per methylene sequence. A building block model explaining the unusually large periodicity of three monomeric units is proposed wherein layers containing crystalline or amorphous methylene sequences occur in different combinations. Occurrence of different layered structures depending on crystallization conditions, methylene sequence length as well as functional group type is explained by a competition of H-interactions between the DAP groups and the van der Waal forces between the hydrophobic methylene groups.
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Affiliation(s)
- Varun Danke
- Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Walter-Hülse-Straße 1, 06120, Halle (Saale), Germany
- Faculty of Natural Sciences II, Martin-Luther-University Halle-Wittenberg, Heinrich-Damerow-Straße 4, 06120, Halle (Saale), Germany
| | - Sophie Reimann
- Chair of Macromolecular Chemistry, Faculty of Natural Sciences II, Institute of Chemistry, Martin-Luther-University Halle-Wittenberg, 06120, Halle (Saale), Germany
| | - Wolfgang H Binder
- Chair of Macromolecular Chemistry, Faculty of Natural Sciences II, Institute of Chemistry, Martin-Luther-University Halle-Wittenberg, 06120, Halle (Saale), Germany
| | - Gaurav Gupta
- Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Walter-Hülse-Straße 1, 06120, Halle (Saale), Germany.
- Faculty of Natural Sciences II, Martin-Luther-University Halle-Wittenberg, Heinrich-Damerow-Straße 4, 06120, Halle (Saale), Germany.
| | - Mario Beiner
- Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Walter-Hülse-Straße 1, 06120, Halle (Saale), Germany.
- Faculty of Natural Sciences II, Martin-Luther-University Halle-Wittenberg, Heinrich-Damerow-Straße 4, 06120, Halle (Saale), Germany.
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ADMET polymerization in affordable, commercially available, high boiling solvents. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2385-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Canalp MB, Binder WH. Hybrid polymers bearing oligo-l-lysine(carboxybenzyl)s: synthesis and investigations of secondary structure. RSC Adv 2020; 10:1287-1295. [PMID: 35494681 PMCID: PMC9047569 DOI: 10.1039/c9ra09189k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 12/21/2019] [Indexed: 01/13/2023] Open
Abstract
Hybrid polymers of peptides resembling (partially) folded protein structures are promising materials in biomedicine, especially in view of folding-interactions between different segments. In this study polymers bearing repetitive peptidic folding elements, composed of N-terminus functionalized bis-ω-ene-functional oligo-l-lysine(carboxybenzyl(Z))s (Lysn) with repeating units (n) of 3, 6, 12, 24 and 30 were successfully synthesized to study their secondary structure introduced by conformational interactions between their chains. The pre-polymers of ADMET, narrowly dispersed Lysns, were obtained by ring opening polymerization (ROP) of N-carboxyanhydride (NCA) initiated with 11-amino-undecene, following N-terminus functionalization with 10-undecenoyl chloride. The resulting Lysns were subsequently polymerized via ADMET polymerization by using Grubbs’ first generation (G1) catalyst in 1,1,1,3,3,3-hexafluoroisopropanol (HFIP) generating the ADMET polymers (A-[Lysn]m) (m = 2–12) with molecular weights ranging from 3 to 28 kDa, displaying polydispersity (Đ) values in the range of 1.5–3.2. After chemical analyses of Lysns and A-[Lysn]ms by 1H-NMR, GPC and MALDI-ToF MS, secondary structural investigations were probed by CD spectroscopy and IR spectroscopy in 2,2,2-trifluoroethanol (TFE). In order to study A-[Lysn]ms with defined molecular weights and low polydispersity values (Đ = 1.03–1.48), the ADMET polymers A-[Lysn=3]m=3 and A-[Lysn=24]m=4 were fractionated by preparative GPC, and subsequently analysed by 1H-NMR, analytical GPC, MALDI-ToF MS and CD spectroscopy. We can demonstrate the influence of chain length of the generated polymers on the formation of secondary structures by comparing Lysns with varying n values to the ADMET-polymers with the help of spectroscopic techniques such as CD and FTIR-spectroscopy in a helicogenic solvent. We demonstrate the influence of chain length of segmented polymers bearing dynamic folding elements onto the formation of secondary structures with the help of spectroscopic techniques such as CD and FTIR-spectroscopy in a helicogenic solvent.![]()
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Affiliation(s)
- Merve Basak Canalp
- Faculty of Natural Science II (Chemistry, Physics and Mathematics), Martin Luther University Halle-Wittenberg von-Danckelmann-Platz 4 Halle (Saale) D-06120 Germany
| | - Wolfgang H Binder
- Faculty of Natural Science II (Chemistry, Physics and Mathematics), Martin Luther University Halle-Wittenberg von-Danckelmann-Platz 4 Halle (Saale) D-06120 Germany
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Das D, Chen J, Srinivasan S, Kelly AM, Lee B, Son HN, Radella F, West TE, Ratner DM, Convertine AJ, Skerrett SJ, Stayton PS. Synthetic Macromolecular Antibiotic Platform for Inhalable Therapy against Aerosolized Intracellular Alveolar Infections. Mol Pharm 2017; 14:1988-1997. [PMID: 28394614 DOI: 10.1021/acs.molpharmaceut.7b00093] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Lung-based intracellular bacterial infections remain one of the most challenging infectious disease settings. For example, the current standard for treating Franciscella tularensis pneumonia (tularemia) relies on administration of oral or intravenous antibiotics that poorly achieve and sustain pulmonary drug bioavailability. Inhalable antibiotic formulations are approved and in clinical development for upper respiratory infections, but sustained drug dosing from inhaled antibiotics against alveolar intracellular infections remains a current unmet need. To provide an extended therapy against alveolar intracellular infections, we have developed a macromolecular therapeutic platform that provides sustained local delivery of ciprofloxacin with controlled dosing profiles. Synthesized using RAFT polymerization, these macromolecular prodrugs characteristically have high drug loading (16-17 wt % drug), tunable hydrolysis kinetics mediated by drug linkage chemistry (slow-releasing alkyllic vs fast-releasing phenolic esters), and, in general, represent new fully synthetic nanotherapeutics with streamlined manufacturing profiles. In aerosolized and completely lethal F.t. novicida mouse challenge models, the fast-releasing ciprofloxacin macromolecular prodrug provided high cure efficiencies (75% survival rate under therapeutic treatment), and the importance of release kinetics was demonstrated by the inactivity of the similar but slow-releasing prodrug system. Pharmacokinetics and biodistribution studies further demonstrated that the efficacious fast-releasing prodrug retained drug dosing in the lung above the MIC over a 48 h period with corresponding Cmax/MIC and AUC0-24h/MIC ratios being greater than 10 and 125, respectively; the thresholds for optimal bactericidal efficacy. These findings identify the macromolecular prodrug platform as a potential therapeutic system to better treat alveolar intracellular infections such as F. tularensis, where positive patient outcomes require tailored antibiotic pharmacokinetic and treatment profiles.
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Affiliation(s)
- Debobrato Das
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
| | - Jasmin Chen
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
| | - Selvi Srinivasan
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
| | - Abby M Kelly
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
| | - Brian Lee
- Division of Pulmonary and Critical Care Medicine, Harborview Medical Center, University of Washington , Seattle, Washington 98104, United States
| | - Hye-Nam Son
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
| | - Frank Radella
- Division of Pulmonary and Critical Care Medicine, Harborview Medical Center, University of Washington , Seattle, Washington 98104, United States
| | - T Eoin West
- Division of Pulmonary and Critical Care Medicine, Harborview Medical Center, University of Washington , Seattle, Washington 98104, United States.,Department of Global Health, University of Washington , Seattle, Washington 98195, United States
| | - Daniel M Ratner
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
| | - Anthony J Convertine
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
| | - Shawn J Skerrett
- Division of Pulmonary and Critical Care Medicine, Harborview Medical Center, University of Washington , Seattle, Washington 98104, United States
| | - Patrick S Stayton
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
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Hibi Y, Ouchi M, Sawamoto M. A strategy for sequence control in vinyl polymers via iterative controlled radical cyclization. Nat Commun 2016; 7:11064. [PMID: 26996881 PMCID: PMC4802161 DOI: 10.1038/ncomms11064] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 02/17/2016] [Indexed: 02/07/2023] Open
Abstract
There is a growing interest in sequence-controlled polymers toward advanced functional materials. However, control of side-chain order for vinyl polymers has been lacking feasibility in the field of polymer synthesis because of the inherent feature of chain-growth propagation. Here we show a general and versatile strategy to control sequence in vinyl polymers through iterative radical cyclization with orthogonally cleavable and renewable bonds. The proposed methodology employs a repetitive and iterative intramolecular cyclization via a radical intermediate in a one-time template with a radical-generating site at one end and an alkene end at the other, each of which is connected to a linker via independently cleavable and renewable bonds. The unique design specifically allowed control of radical addition reaction although inherent chain-growth intermediate (radical species) was used, as well as the iterative cycle and functionalization for resultant side chains, to lead to sequence-controlled vinyl polymers (or oligomers).
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Affiliation(s)
- Yusuke Hibi
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Makoto Ouchi
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
- Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), 4-1-8 Kawaguchi, Saitama 332-0012, Japan
| | - Mitsuo Sawamoto
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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Synthesis and Controlled Release Behavior of Biodegradable Polymers with Pendant Ibuprofen Group. INT J POLYM SCI 2016. [DOI: 10.1155/2016/5861419] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The continuous use of nonsteroidal anti-inflammatory drugs such as ibuprofen frequently leads to some serious side-effects including stomach ulcers and bleeding. In this paper, two kinds of new biocompatible polyesters (PIGB, PIGH) and polyester-amide (PIGA) comprising biodegradable components (L-glutamic acid,1,4-butanediol, and1,6-hexanediol and6-amino hexanol) and ibuprofen as pendant group have been prepared by the melting polycondensation. The chemical structures of the monomer and polymers are characterized by FTIR,1H NMR spectrum, GPC, and contact angle measurements. The drug loading of ibuprofen reaches very high level (35–37%) for PIGB, PIGH, and PIGA carriers. The free ibuprofen molecules are releasedin vitrofrom polymer carriers in a controlled manner without a burst release, different from the release pattern observed in the other drug-encapsulated systems. It is also found that the different hydrophilicity among PIGB, PIGH, and PIGA plays a key role in the time-controlled release of ibuprofen. In addition, the viability of HeLa cells after 48 h of incubation reaches more than 100%, indicating no cytotoxicity for PIGB, PIGH, and PIGA carriers.
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van Hensbergen JA, Gaines TW, Wagener KB, Burford RP, Lowe AB. Functional α,ω-dienes via thiol-Michael chemistry: synthesis, oxidative protection, acyclic diene metathesis (ADMET) polymerization and radical thiol–ene modification. Polym Chem 2014. [DOI: 10.1039/c4py00783b] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of the novel α,ω-diene 2-(undec-10-en-1-yl)tridec-12-en-1-yl acrylate is described.
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Affiliation(s)
- Johannes A. van Hensbergen
- School of Chemical Engineering
- Centre for Advanced Macromolecular Design
- UNSW Australia
- Sydney, Australia
- George and Josephine Butler Polymer Research Laboratory
| | - Taylor W. Gaines
- George and Josephine Butler Polymer Research Laboratory
- Department of Chemistry and Center for Macromolecular Science and Engineering
- University of Florida
- Gainesville, USA
| | - Kenneth B. Wagener
- George and Josephine Butler Polymer Research Laboratory
- Department of Chemistry and Center for Macromolecular Science and Engineering
- University of Florida
- Gainesville, USA
| | - Robert P. Burford
- School of Chemical Engineering
- Centre for Advanced Macromolecular Design
- UNSW Australia
- Sydney, Australia
| | - Andrew B. Lowe
- School of Chemical Engineering
- Centre for Advanced Macromolecular Design
- UNSW Australia
- Sydney, Australia
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Beer S, Teasdale I, Brueggemann O. Immobilization of antioxidants via ADMET polymerization for enhanced long-term stabilization of polyolefins. Eur Polym J 2013. [DOI: 10.1016/j.eurpolymj.2013.10.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Affiliation(s)
- Pascale Atallah
- The George and Josephine Butler Polymer
Research Laboratory, Department of Chemistry and Center for Macromolecular
Science and Engineering, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Kenneth B. Wagener
- The George and Josephine Butler Polymer
Research Laboratory, Department of Chemistry and Center for Macromolecular
Science and Engineering, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Michael D. Schulz
- The George and Josephine Butler Polymer
Research Laboratory, Department of Chemistry and Center for Macromolecular
Science and Engineering, University of Florida, Gainesville, Florida 32611-7200, United States
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Miki K, Inoue T, Ohe K. Metathesis Polymerization-Based Synthesis of Functionalized Polymers Aiming at Medicinal Application. J SYN ORG CHEM JPN 2013. [DOI: 10.5059/yukigoseikyokaishi.71.601] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Herndon JW. The chemistry of the carbon–transition metal double and triple bond: Annual survey covering the year 2010. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.02.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Mutlu H, de Espinosa LM, Meier MAR. Acyclic dienemetathesis: a versatile tool for the construction of defined polymer architectures. Chem Soc Rev 2011; 40:1404-45. [DOI: 10.1039/b924852h] [Citation(s) in RCA: 240] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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