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Elter JK, Liščáková V, Moravec O, Vragović M, Filipová M, Štěpánek P, Šácha P, Hrubý M. Solid-Phase Synthesis as a Tool to Create Exactly Defined, Branched Polymer Vectors for Cell Membrane Targeting. Macromolecules 2024; 57:1050-1071. [PMID: 38370914 PMCID: PMC10867888 DOI: 10.1021/acs.macromol.3c02600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 01/09/2024] [Indexed: 02/20/2024]
Abstract
Modern drug formulations often require, besides the active drug molecule, auxiliaries to enhance their pharmacological properties. Tailor-made, biocompatible polymers covalently connected to the drug molecule can fulfill this function by increasing its solubility, reducing its toxicity, and guiding it to a specific target. If targeting membrane-bound proteins, localization of the drug close to the cell membrane and its target is beneficial to increase drug efficiency and residence time. In this study, we present the synthesis of highly defined, branched polymeric structures with membrane-binding properties. One to three hydrophilic poly(ethylene oxide) or poly(2-ethyloxazoline) side chains were connected via a peptoid backbone using a two-step iterative protocol for solid-phase peptoid synthesis. Additional groups, e.g., a hydrophobic anchor for membrane attachment, were introduced. Due to the nature of solid-phase synthesis, the number and order of the side chains and additional units can be precisely defined. The method proved to be versatile for the generation of multifunctional, branched polymeric structures of molecular weights up to approximately 7000 g mol-1. The behavior of all compounds towards biological membranes and cells was investigated using liposomes as cell membrane models, HEK293 and U251-MG cell lines, and red blood cells, thereby demonstrating their potential value as drug auxiliaries with cell membrane affinity.
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Affiliation(s)
- Johanna K. Elter
- Institute
of Macromolecular Chemistry, CAS Heyrovského
nám. 2, 162 06, Praha 6, Czech Republic
| | - Veronika Liščáková
- Institute
of Organic Chemistry and Biochemistry, CAS Flemingovo nám. 2, 166 10, Praha 6, Czech Republic
- First
Faculty of Medicine, Charles University
Kateřinská, 1660/32, 121 08, Praha 2, Czech Republic
| | - Oliver Moravec
- Institute
of Macromolecular Chemistry, CAS Heyrovského
nám. 2, 162 06, Praha 6, Czech Republic
| | - Martina Vragović
- Institute
of Macromolecular Chemistry, CAS Heyrovského
nám. 2, 162 06, Praha 6, Czech Republic
| | - Marcela Filipová
- Institute
of Macromolecular Chemistry, CAS Heyrovského
nám. 2, 162 06, Praha 6, Czech Republic
| | - Petr Štěpánek
- Institute
of Macromolecular Chemistry, CAS Heyrovského
nám. 2, 162 06, Praha 6, Czech Republic
| | - Pavel Šácha
- Institute
of Organic Chemistry and Biochemistry, CAS Flemingovo nám. 2, 166 10, Praha 6, Czech Republic
| | - Martin Hrubý
- Institute
of Macromolecular Chemistry, CAS Heyrovského
nám. 2, 162 06, Praha 6, Czech Republic
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2
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Göppert NE, Quader S, Van Guyse JFR, Weber C, Kataoka K, Schubert US. Amphiphilic Poly(2-oxazoline)s with Glycine-Containing Hydrophobic Blocks Tailored for Panobinostat- and Imatinib-Loaded Micelles. Biomacromolecules 2023; 24:5915-5925. [PMID: 37987713 DOI: 10.1021/acs.biomac.3c00934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Aiming toward the development of tailored carrier materials for the cytostatics panobinostat and imatinib, an amphiphilic block copolymer composed of poly(2-ethyl-2-oxazoline) and a degradable poly(2-(3-phenylpropyl)-2-oxazoline) analogue (dPPhPrOx-b-PEtOx) was synthesized via a postpolymerization synthesis route based on reacylation of oxidized linear poly(ethylene imine). The obtained dPPhPrOx-b-PEtOx was found to readily self-assemble into well-defined micelles with a critical micelle concentration of 1 μg mL-1. The incubation of HUVEC cells with the blank micelles revealed their excellent cytocompatibility (up to 2 mg mL-1), thus confirming the polymers' suitability for potential drug delivery application. Subsequently, the encapsulation of the two cytostatics, panobinostat and imatinib, into the dPPhPrOx-b-PEtOx micelles was successfully demonstrated (Dh ≈ 80 nm, PDI ≈ 0.16), whereby the well-defined nature of the micelle was maintained upon extended incubation at 37 °C (36 h) and storage at 4 °C (1 month). Labeling of the micelles with Alexa Fluor 594 and Alexa Fluor 647, which form a Förster resonance energy transfer (FRET) pair, indicated the stability of loaded micelles upon dilution until the CMC. Finally, the cytotoxicity of the loaded micelles was investigated against three different cell lines: Medulloblastoma cell lines ONS-76 and DAOY as well as the glioblastoma cell line U87MG. While the panobinostat-loaded micelles displayed similar cytotoxicity compared to the pure drug in the cell lines, imatinib-loaded micelles were found to be more potent compared to the pristine drug, as significantly higher cytotoxicity was observed across all three cell lines.
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Affiliation(s)
- Natalie E Göppert
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Sabina Quader
- Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 3-25-14 Tonomachi, Kawasaki-ku, Kawasaki 212-0821, Japan
| | - Joachim F R Van Guyse
- Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 3-25-14 Tonomachi, Kawasaki-ku, Kawasaki 212-0821, Japan
| | - Christine Weber
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Kazunori Kataoka
- Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 3-25-14 Tonomachi, Kawasaki-ku, Kawasaki 212-0821, Japan
| | - Ulrich S Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
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3
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Simon L, De Taddeo M, Coeurvolan A, Colpaert M, Richard J, Devoisselle JM, Morille M, Marcotte N, Bégu S, Lapinte V. Various lipid anchors on amphiphilic polyoxazolines to reach efficient intracellular delivery. Int J Pharm 2023:123103. [PMID: 37277088 DOI: 10.1016/j.ijpharm.2023.123103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 05/30/2023] [Accepted: 06/01/2023] [Indexed: 06/07/2023]
Abstract
This work aimed at evaluating the potential of amphiphilic polyoxazolines bearing lipid chain called lipopolyoxazolines to reach efficient intracellular delivery. Four lipid chains: linear saturated, linear unsaturated and two branched one of various length were associated to poly(2-methyl-2-oxazoline) block. The evaluation of their physicochemical features and their impact on cell viability and internalization capacity indicated that the linear saturated gathered the highest cell internalization with a good cell viability. Its intracellular delivery capacity was compared to the PEG reference (DSPE-PEG) after being formulated in liposomes and loaded with fluorescent probe. Both POxylated and PEGylated liposomes showed similar characteristics regarding size distribution, drug loading and cell viability. However, their intracellular delivery was dramatically different, with an improved delivery by 30 folds for the POxylated ones. This significantly better performance highlighted the difficulty of PEGylated liposomes to enter the cells by endocytosis, contrary to POxylated liposomes. This study promotes the value of lipopoly(oxazoline) as a lipopoly(ethylene glycol) alternative for effective intracellular delivery and holds great promises for development of nanoformulations for intravenous administration.
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Affiliation(s)
- L Simon
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France
| | - M De Taddeo
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France
| | - A Coeurvolan
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France
| | - M Colpaert
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France
| | - J Richard
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France
| | | | - M Morille
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France
| | - N Marcotte
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France
| | - S Bégu
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France
| | - V Lapinte
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France.
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4
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Bardoula V, Leclercq L, Hoogenboom R, Nardello-Rataj V. Amphiphilic nonionic block and gradient copoly(2-oxazoline)s based on 2-methyl-2-oxazoline and 2-phenyl-2-oxazoline as efficient stabilizers for the formulation of tailor-made emulsions. J Colloid Interface Sci 2022; 632:223-236. [DOI: 10.1016/j.jcis.2022.11.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 10/31/2022] [Accepted: 11/05/2022] [Indexed: 11/10/2022]
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6
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Yang M, Haider MS, Forster S, Hu C, Luxenhofer R. Synthesis and Investigation of Chiral Poly(2,4-disubstituted-2-oxazoline)-Based Triblock Copolymers, Their Self-Assembly, and Formulation with Chiral and Achiral Drugs. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mengshi Yang
- Functional Polymer Materials, Chair for Chemical Technology of Material Synthesis, Institute for Functional Materials and Biofabrication, Department of Chemistry and Pharmacy, Julius-Maximilians-University Würzburg, Röntgenring 11, 97070 Würzburg, Germany
| | - Malik Salman Haider
- Functional Polymer Materials, Chair for Chemical Technology of Material Synthesis, Institute for Functional Materials and Biofabrication, Department of Chemistry and Pharmacy, Julius-Maximilians-University Würzburg, Röntgenring 11, 97070 Würzburg, Germany
| | - Stefan Forster
- Functional Polymer Materials, Chair for Chemical Technology of Material Synthesis, Institute for Functional Materials and Biofabrication, Department of Chemistry and Pharmacy, Julius-Maximilians-University Würzburg, Röntgenring 11, 97070 Würzburg, Germany
| | - Chen Hu
- Functional Polymer Materials, Chair for Chemical Technology of Material Synthesis, Institute for Functional Materials and Biofabrication, Department of Chemistry and Pharmacy, Julius-Maximilians-University Würzburg, Röntgenring 11, 97070 Würzburg, Germany
| | - Robert Luxenhofer
- Functional Polymer Materials, Chair for Chemical Technology of Material Synthesis, Institute for Functional Materials and Biofabrication, Department of Chemistry and Pharmacy, Julius-Maximilians-University Würzburg, Röntgenring 11, 97070 Würzburg, Germany
- Soft Matter Chemistry, Department of Chemistry and Helsinki Institute of Sustainability Science, Faculty of Science, University of Helsinki, P.O. Box 55, 00014 Helsinki, Finland
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7
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Najer A, Belessiotis-Richards A, Kim H, Saunders C. Block Length-Dependent Protein Fouling on Poly(2-oxazoline)-Based Polymersomes: Influence on Macrophage Association and Circulation Behavior. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2201993. [PMID: 35670200 PMCID: PMC7615485 DOI: 10.1002/smll.202201993] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 05/05/2022] [Indexed: 06/15/2023]
Abstract
Polymersomes are vesicular structures self-assembled from amphiphilic block copolymers and are considered an alternative to liposomes for applications in drug delivery, immunotherapy, biosensing, and as nanoreactors and artificial organelles. However, the limited availability of systematic stability, protein fouling (protein corona formation), and blood circulation studies hampers their clinical translation. Poly(2-oxazoline)s (POx) are valuable antifouling hydrophilic polymers that can replace the current gold-standard, poly(ethylene glycol) (PEG), yet investigations of POx functionality on nanoparticles are relatively sparse. Herein, a systematic study is reported of the structural, dynamic and antifouling properties of polymersomes made of poly(2-methyl-2-oxazoline)-block-poly(dimethylsiloxane)-block-poly(2-methyl-2-oxazoline) (PMOXA-b-PDMS-b-PMOXA). The study relates in vitro antifouling performance of the polymersomes to atomistic molecular dynamics simulations of polymersome membrane hydration behavior. These observations support the experimentally demonstrated benefit of maximizing the length of PMOXA (degree of polymerization (DP) > 6) while keeping PDMS at a minimal length that still provides sufficient membrane stability (DP > 19). In vitro macrophage association and in vivo blood circulation evaluation of polymersomes in zebrafish embryos corroborate these findings. They further suggest that single copolymer presentation on polymersomes is outperformed by blends of varied copolymer lengths. This study helps to rationalize design rules for stable and low-fouling polymersomes for future medical applications.
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Affiliation(s)
- Adrian Najer
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College London, London SW7 2AZ, UK
| | - Alexis Belessiotis-Richards
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College London, London SW7 2AZ, UK
| | - Hyemin Kim
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College London, London SW7 2AZ, UK
| | - Catherine Saunders
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College London, London SW7 2AZ, UK
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8
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Fay JM, Lim C, Finkelstein A, Batrakova EV, Kabanov AV. PEG-Free Polyion Complex Nanocarriers for Brain-Derived Neurotrophic Factor. Pharmaceutics 2022; 14:pharmaceutics14071391. [PMID: 35890287 PMCID: PMC9317007 DOI: 10.3390/pharmaceutics14071391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/29/2022] [Accepted: 06/29/2022] [Indexed: 12/10/2022] Open
Abstract
Many therapeutic formulations incorporate poly(ethylene glycol) (PEG) as a stealth component to minimize early clearance. However, PEG is immunogenic and susceptible to accelerated clearance after multiple administrations. Here, we present two novel reformulations of a polyion complex (PIC), originally composed of poly(ethylene glycol)113-b-poly(glutamic acid)50 (PEG-PLE) and brain-derived neurotrophic factor (BDNF), termed Nano-BDNF (Nano-BDNF PEG-PLE). We replace the PEG based block copolymer with two new polymers, poly(sarcosine)127-b-poly(glutamic acid)50 (PSR-PLE) and poly(methyl-2-oxazolines)38-b-poly(oxazolepropanoic acid)27-b-poly(methyl-2-oxazoline)38 (PMeOx-PPaOx-PMeOx), which are driven to association with BDNF via electrostatic interactions and hydrogen bonding to form a PIC. Formulation using a microfluidic mixer yields small and narrowly disperse nanoparticles which associate following similar principles. Additionally, we demonstrate that encapsulation does not inhibit access by the receptor kinase, which affects BDNF’s physiologic benefits. Finally, we investigate the formation of nascent nanoparticles through a series of characterization experiments and isothermal titration experiments which show the effects of pH in the context of particle self-assembly. Our findings indicate that thoughtful reformulation of PEG based, therapeutic PICs with non-PEG alternatives can be accomplished without compromising the self-assembly of the PIC.
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Affiliation(s)
- James M. Fay
- Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7362, USA; (J.M.F.); (C.L.); (E.V.B.)
- Department of Biochemistry and Biophysics, School of Medicine, University of North Carolina, Chapel Hill, NC 27599-7260, USA
| | - Chaemin Lim
- Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7362, USA; (J.M.F.); (C.L.); (E.V.B.)
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7260, USA
| | - Anna Finkelstein
- Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7362, USA; (J.M.F.); (C.L.); (E.V.B.)
| | - Elena V. Batrakova
- Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7362, USA; (J.M.F.); (C.L.); (E.V.B.)
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7260, USA
| | - Alexander V. Kabanov
- Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7362, USA; (J.M.F.); (C.L.); (E.V.B.)
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7260, USA
- Laboratory of Chemical Design of Bionanomaterials, Faculty of Chemistry, M.V. Lomonosov Moscow State University, 119992 Moscow, Russia
- Correspondence:
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9
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Eco-Friendly Synthesis of PEtOz-PA: A Promising Polymer for the Formulation of Curcumin-Loaded Micelles. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27123788. [PMID: 35744914 PMCID: PMC9231041 DOI: 10.3390/molecules27123788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/09/2022] [Accepted: 06/11/2022] [Indexed: 11/17/2022]
Abstract
The need to develop alternative methods or to use "green" solvents constitutes an essential strategy under the emerging field of green chemistry, particularly in the development of new synthetic strategies in the field of pharmaceutic industry. We report an eco-friendly method of synthesis of poly(2-ethyl-2-oxazoline)-palmitoylate (PEtOz-PA) using Er(OTf)3 as Lewis's acid catalyst in 2-MeTHF. The novel biomolecule derivative was characterized to confirm palmitoyl group substitution and employed for the formulation, characterization, and antioxidant activity evaluation of curcumin-loaded polymeric micelles.
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10
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Dong S, Ma S, Chen H, Tang Z, Song W, Deng M. Nucleobase-crosslinked poly(2-oxazoline) nanoparticles as paclitaxel carriers with enhanced stability and ultra-high drug loading capacity for breast cancer therapy. Asian J Pharm Sci 2022; 17:571-582. [PMID: 36105315 PMCID: PMC9459052 DOI: 10.1016/j.ajps.2022.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 04/12/2022] [Accepted: 04/27/2022] [Indexed: 11/13/2022] Open
Abstract
Poly(2-oxazoline) (POx) has been regarded as a potential candidate for drug delivery carrier to meet the challenges of nanomedicine clinical translation, due to its excellent biocompatibility and self-assembly properties. The drug loading capacity and stability of amphiphilic POxs as drug nanocarriers, however, tend to be insufficient. Herein, we report a strategy to prepare nucleobase-crosslinked POx nanoparticles (NPs) with enhanced stability and ultra-high paclitaxel (PTX) loading capacity for breast cancer therapy. An amphiphilic amine-functionalized POx (PMBEOx-NH2) was firstly prepared through a click reaction between cysteamines and vinyl groups in poly(2-methyl-2-oxazoline)-block-poly (2‑butyl‑2-oxazoline-co-2-butenyl-2-oxazoline) (PMBEOx). Complementary nucleobase-pairs adenine (A) and uracil (U) were subsequently conjugated to PMBEOx-NH2 to give functional POxs (POxA and POxU), respectively. Due to the nucleobase interactions formed between A and U, NPs formed by POxA and POxU at a molar ratio of 1:1 displayed ultrahigh PTX loading capacity (38.2%, PTX/POxA@U), excellent stability, and reduced particle size compared to the uncross-linked PTX-loaded NPs (PTX/PMBEOx). Besides the prolonged blood circulation and enhanced tumor accumulation, the smaller PTX/POxA@U NPs also have better tumor penetration ability compared with PTX/PMBEOx, thus leading to a higher tumor suppression rate in two murine breast cancer models (E0711 and 4T1). These results proved that the therapeutic effect of chemotherapeutic drugs could be improved remarkably through a reasonable optimization of nanocarriers.
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Sheffey VV, Siew EB, Tanner EEL, Eniola‐Adefeso O. PLGA's Plight and the Role of Stealth Surface Modification Strategies in Its Use for Intravenous Particulate Drug Delivery. Adv Healthc Mater 2022; 11:e2101536. [PMID: 35032406 PMCID: PMC9035064 DOI: 10.1002/adhm.202101536] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 12/31/2021] [Indexed: 12/17/2022]
Abstract
Numerous human disorders can benefit from targeted, intravenous (IV) drug delivery. Polymeric nanoparticles have been designed to undergo systemic circulation and deliver their therapeutic cargo to target sites in a controlled manner. Poly(lactic-co-glycolic) acid (PLGA) is a particularly promising biomaterial for designing intravenous drug carriers due to its biocompatibility, biodegradability, and history of clinical success across other routes of administration. Despite these merits, PLGA remains markedly absent in clinically approved IV drug delivery formulations. A prominent factor in PLGA particles' inability to succeed intravenously may lie in the hydrophobic character of the polyester, leading to the adsorption of serum proteins (i.e., opsonization) and a cascade of events that end in their premature clearance from the bloodstream. PEGylation, or surface-attached polyethylene glycol chains, is a common strategy for shielding particles from opsonization. Polyethylene glycol (PEG) continues to be regarded as the ultimate "stealth" solution despite the lack of clinical progress of PEGylated PLGA carriers. This review reflects on some of the reasons for the clinical failure of PLGA, particularly the drawbacks of PEGylation, and highlights alternative surface coatings on PLGA particles. Ultimately, a new approach will be needed to harness the potential of PLGA nanoparticles and allow their widespread clinical adoption.
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Affiliation(s)
- Violet V. Sheffey
- Macromolecular Science and Engineering Program University of Michigan Ann Arbor NCRC Building 28, 2800 Plymouth Rd. Ann Arbor MI 48109 USA
| | - Emily B. Siew
- Department of Chemical Engineering University of Michigan Ann Arbor NCRC 28, 2800 Plymouth Rd. Ann Arbor MI 48109 USA
| | - Eden E. L. Tanner
- Department of Chemistry and Biochemistry University of Mississippi 179 Coulter Hall University MS 38677 USA
| | - Omolola Eniola‐Adefeso
- Macromolecular Science and Engineering Program University of Michigan Ann Arbor NCRC Building 28, 2800 Plymouth Rd. Ann Arbor MI 48109 USA
- Department of Chemical Engineering University of Michigan Ann Arbor NCRC 28, 2800 Plymouth Rd. Ann Arbor MI 48109 USA
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12
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Fay JM, Kabanov AV. Interpolyelectrolyte Complexes as an Emerging Technology for Pharmaceutical Delivery of Polypeptides. REVIEWS AND ADVANCES IN CHEMISTRY 2022. [PMCID: PMC9987408 DOI: 10.1134/s2634827622600177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
Polyelectrolyte complexes and the derivatives thereof comprise some of the most promising vehicles for the encapsulation and delivery of macromolecular therapeutics. In particular, protein therapeutics, which present a host of special considerations, can often be effectively packaged and delivered using interpolyelectrolyte complexes. While the technologies are still in the developmental phase, there are numerous examples of complexes where control is exerted over spacial and temporal delivery of a model protein cargo or candidate protein therapeutic agent. Here we provide a historical and practical background to promote a deeper understanding of interpolyelectrolyte complexes and the derivative technologies. Additionally, we review the physical principles underlying the association of polyelectrolyte complexes and the application of those principles to novel strategies and technologies driving interpolyelectrolyte complexation. Then, the application of polyelectrolyte complex technology to protein therapeutics is discussed in detail including discussions of several types of protein cargo with a special emphasis on Brain-Derived Neurotrophic Factor. Finally, we focus on the use of stealth polymers in block ionomer complexes, specifically PEG; its benefits, flaws, and possible alternatives. Comprehensive understanding of the field may promote the continued development of derivative technologies for the delivery of particularly intransigent protein therapeutics, much as has been accomplished for small molecule drugs. We also aim to link current advances to the historical developments which inaugurated the field. With consideration to the field, industrial and academic researchers can utilize the discussed technologies and continue to elucidate novel modalities for a myriad of therapeutic and commercial applications.
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Affiliation(s)
- James M. Fay
- Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina, NC 27599-7362 Chapel Hill, USA ,Department of Biochemistry and Biophysics, School of Medicine, University of North Carolina, NC 27599-7260 Chapel Hill, USA
| | - Alexander V. Kabanov
- Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina, NC 27599-7362 Chapel Hill, USA ,Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina, NC 27599-7260 Chapel Hill, USA ,Faculty of Chemistry, Moscow State University, 119992 Moscow, Russia
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13
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Enhanced Delivery of Thermoresponsive Polymer-Based Medicine into Tumors by Using Heat Produced from Gold Nanorods Irradiated with Near-Infrared Light. Cancers (Basel) 2021; 13:cancers13195005. [PMID: 34638489 PMCID: PMC8508138 DOI: 10.3390/cancers13195005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/30/2021] [Accepted: 10/01/2021] [Indexed: 11/16/2022] Open
Abstract
Simple Summary To establish a therapy targeting scattered tumors throughout the body, we propose a novel drug delivery system using a thermoresponsive polyoxazoline (POZ) as a drug carrier in combination with gold nanorods (GNR), which produce heat when irradiated with near-infrared (NIR) light. After the tumor was irradiated with NIR light, where GNR was accumulated in advance, the radiolabeled POZ was intravenously injected. As a result, a marked tumor uptake was achieved via self-aggregation of POZ by sensing heat yielded from the GNR. Because the POZ would be chemically modified with various anti-tumor drugs including therapeutic radionuclides, remarkable anti-tumor effects can be expected by enhancing delivery of POZ-based medicine into scattered tumors throughout the body. Abstract The aim of this study was to establish a drug delivery system (DDS) for marked therapy of tumors using a thermoresponsive polymer, polyoxazoline (POZ). The effectiveness of the following was investigated: (i) the delivery of gold nanorods (GNRs) to tumor tissues, (ii) heat production of GNR upon irradiation with near-infrared (NIR) light, and (iii) high accumulation of an intravenously injected radiolabeled POZ as a drug carrier in tumors by sensing heat produced by GNRs. When the GNR solution was irradiated with NIR light (808 nm), the solution temperature was increased both in a GNR-concentration-dependent manner and in a light-dose-dependent manner. POZ, with a lower critical solution temperature of 38 °C, was aggregated depending on the heat produced by the GNR irradiated by NIR light. When it was intratumorally pre-injected into colon26-tumor-bearing mice, followed by NIR light irradiation (GNR+/Light+ group), the tumor surface temperature increased to approximately 42 °C within 5 min. Fifteen minutes after irradiation with NIR light, indium-111 (111In)-labeled POZ was intravenously injected into tumor-bearing mice, and the radioactivity distribution was evaluated. The accumulation of POZ in the tumor was significantly (approximately 4-fold) higher than that in the control groups (GNR+/without NIR light irradiation (Light–), without injection of GNR (GNR–)/Light+, and GNR–/Light– groups). Furthermore, an in vivo confocal fluorescence microscopy study, using fluorescence-labeled POZ, revealed that uptake of POZ by the tumor could be attributed to the heat produced by GNR. In conclusion, we successfully established a novel DDS in which POZ could be efficiently delivered into tumors by using the heat produced by GNR irradiated with NIR light.
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Ozkose UU, Gulyuz S, Parlak Khalily M, Ozcubukcu S, Bozkir A, Tasdelen MA, Alpturk O, Yilmaz O. The synthesis of peptide‐conjugated poly(2‐ethyl‐2‐oxazoline)‐
b
‐poly(L‐lactide) (
PEtOx‐
b
‐PLA
) polymeric systems through the combination of controlled polymerization techniques and click reactions. J Appl Polym Sci 2021. [DOI: 10.1002/app.50286] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Umut Ugur Ozkose
- Materials Institute Marmara Research Center Kocaeli Turkey
- Department of Chemistry, Faculty of Science and Letters Istanbul Technical University Istanbul Turkey
- Department of Chemistry, Faculty of Science and Letters Piri Reis University Istanbul Turkey
| | - Sevgi Gulyuz
- Materials Institute Marmara Research Center Kocaeli Turkey
- Department of Chemistry, Faculty of Science and Letters Istanbul Technical University Istanbul Turkey
| | - Melek Parlak Khalily
- Department of Chemistry, Faculty of Science and Letters Yozgat Bozok University Yozgat Turkey
| | - Salih Ozcubukcu
- Department of Chemistry, Faculty of Science Middle East Technical University Ankara Turkey
| | - Asuman Bozkir
- Department of Pharmaceutical Technology, Faculty of Pharmacy Ankara University Ankara Turkey
| | - Mehmet Atilla Tasdelen
- Department of Polymer Engineering, Faculty of Engineering Yalova University Yalova Turkey
| | - Onur Alpturk
- Department of Chemistry, Faculty of Science and Letters Istanbul Technical University Istanbul Turkey
| | - Ozgur Yilmaz
- Materials Institute Marmara Research Center Kocaeli Turkey
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15
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Leiske MN, Lai M, Amarasena T, Davis TP, Thurecht KJ, Kent SJ, Kempe K. Interactions of core cross-linked poly(2-oxazoline) and poly(2-oxazine) micelles with immune cells in human blood. Biomaterials 2021; 274:120843. [PMID: 33984635 DOI: 10.1016/j.biomaterials.2021.120843] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 04/14/2021] [Accepted: 04/15/2021] [Indexed: 12/18/2022]
Abstract
Water-soluble poly(cyclic imino ether)s (PCIEs) have emerged as promising biocompatible polymers for nanomedicine applications in recent years. Despite their generally accepted stealth properties, there has been no comprehensive evaluation of their interactions with primary immune cells in human blood. Here we present a library of core cross-linked micelles (CCMs) containing various PCIE shells. Well-defined high molar mass CCMs (Mn > 175 kDa, Ð < 1.2) of similar diameter (~20 nm) were synthesised using a cationic ring-opening polymerisation (CROP) - surfactant-free reversible addition-fragmentation chain-transfer (RAFT) emulsion polymerisation strategy. The stealth properties of the different PCIE CCMs were assessed employing a whole human blood assay simulating the complex blood environment. Cell association studies revealed lower associations of poly(2-methyl-2-oxazoline) (PMeOx) and poly(2-ethyl-2-oxazoline) (PEtOx) CCMs with blood immune cells compared to the respective poly(2-oxazine) (POz) CCMs. Noteworthy, PMeOx CCMs outperformed all other reported CCMs, showing overall low associations and only negligible differences in the presence and absence of serum proteins. This study highlights the importance of investigating individual nanomaterials under physiologically relevant conditions and further strengthens the position of PMeOx as a highly promising stealth material for biomedical applications.
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Affiliation(s)
- Meike N Leiske
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, and Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, 3052, Australia
| | - May Lai
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, and Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, 3052, Australia
| | - Thakshila Amarasena
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, The University of Melbourne, Melbourne, Australia; Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, The University of Melbourne, Melbourne, VIC, 3000, Australia
| | - Thomas P Davis
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, and Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, 3052, Australia; Centre for Advanced Imaging (CAI) and Australian Institute for Bioengineering and Nanotechnology, ARC Centre of Excellence in Convergent Bio-Nano Science & Technology and ARC Training Centre for Innovation in Biomedical Imaging Technology, The University of Queensland, St. Lucia, QLD, 4072, Australia
| | - Kristofer J Thurecht
- Centre for Advanced Imaging (CAI) and Australian Institute for Bioengineering and Nanotechnology, ARC Centre of Excellence in Convergent Bio-Nano Science & Technology and ARC Training Centre for Innovation in Biomedical Imaging Technology, The University of Queensland, St. Lucia, QLD, 4072, Australia
| | - Stephen J Kent
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, The University of Melbourne, Melbourne, Australia; Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, The University of Melbourne, Melbourne, VIC, 3000, Australia; Melbourne Sexual Health Centre and Department of Infectious Diseases, Alfred Health, Central Clinical School, Monash University, Melbourne, VIC, 3800, Australia
| | - Kristian Kempe
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, and Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, 3052, Australia; Materials Science and Engineering, Monash University, Clayton, VIC, 3800, Australia.
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16
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Li B, Chu F, Lu Q, Wang Y, Lane LA. Alternating stealth polymer coatings between administrations minimizes toxic and antibody immune responses towards nanomedicine treatment regimens. Acta Biomater 2021; 121:527-540. [PMID: 33285326 DOI: 10.1016/j.actbio.2020.11.047] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 11/25/2020] [Accepted: 11/27/2020] [Indexed: 02/08/2023]
Abstract
In efforts to achieve minimal systemic toxicity and high tumor delivery efficiencies in cancer therapy, various nanomedicine formulations having stealth polymer coatings have been developed for minimizing immune cell uptake and off-target macrophage phagocyte system (MPS) organ accumulation. Despite an initial reduction in immune cell uptake, stealth nanoparticles still initiate an antibody immune response. This response acts on subsequent administrations in treatment regimens resulting in accelerated blood clearance of particles into MPS organs, particularly the liver, where they are retained for prolonged periods. Consequently, doses after the first administration in treatment regimens have diminished tumor accumulation and increased MPS toxicity. Here, we present a strategy reducing antibody responses to each dose in a treatment regimen by alternating between polyethylene-glycol and polymethyloxazoline polymers as the nanoparticle coating between administrations. In a weekly dosing regimen, we find that the first dose of particles having either coating display similar favorable pharmacokinetics and biodistributions, thus allowing the polymers to be used interchangeably. However, when maintaining the same coating in subsequent administrations, we find that particles are in circulation at the height of the antibody immune response resulting in 50-60% decreases of circulation half-lives and tumor accumulation along with 50% increases in liver accumulation. By alternating the polymers used in the nanoparticle coating between administrations, we find each dose maintains favorable in vivo behaviors at the height of the antibody immune response to the previous administration. Furthermore, our strategy increases the clearance of particles uptaken by macrophages and hepatocytes, resulting in marked decreases in hepatotoxicity.
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17
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Gil Alvaradejo G, Glassner M, Kumar R, Trouillet V, Welle A, Wang Y, de la Rosa VR, Sekula-Neuner S, Hirtz M, Hoogenboom R, Delaittre G. Thioacetate-Based Initiators for the Synthesis of Thiol-End-Functionalized Poly(2-oxazoline)s. Macromol Rapid Commun 2021; 41:e2000320. [PMID: 33463837 DOI: 10.1002/marc.202000320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 07/14/2020] [Indexed: 11/07/2022]
Abstract
New functional initiators for the cationic ring-opening polymerization of 2-alkyl-2-oxazolines are described to introduce a thiol moiety at the α terminus. Both tosylate and nosylate initiators carrying a thioacetate group are obtained in multigram scale, from commercial reagents in two steps, including a phototriggered thiol-ene radical addition. The nosylate derivative gives access to a satisfying control over the cationic ring-opening polymerization of 2-ethyl-2-oxazoline, with dispersity values lower than 1.1 during the entire course of the polymerization, until full conversion. Cleavage of the thioacetate end group is rapidly achieved using triazabicyclodecene, thereby leading to a mercapto terminus. The latter gives access to a new subgeneration of α-functional poly(2-oxazoline)s (butyl ester, N-hydroxysuccinimidyl ester, furan) by Michael addition with commercial (meth)acrylates. The amenability of the mercapto-poly(2-ethyl-2-oxazoline) for covalent surface patterning onto acrylated surfaces is demonstrated in a microchannel cantilever spotting (µCS) experiment, characterized by X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary-ion mass spectrometry (ToF-SIMS).
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Affiliation(s)
- Gabriela Gil Alvaradejo
- Institute of Biological and Chemical Systems (IBCS), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany
| | - Mathias Glassner
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, Ghent, 9000, Belgium
| | - Ravi Kumar
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany.,Karlsruhe Institute of Technology (KIT), Karlsruhe Nano Micro Facility, Hermann-von Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany
| | - Vanessa Trouillet
- Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany.,Karlsruhe Institute of Technology (KIT), Karlsruhe Nano Micro Facility, Hermann-von Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany
| | - Alexander Welle
- Karlsruhe Institute of Technology (KIT), Institute of Functional Interfaces, Hermann-von Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany.,Karlsruhe Institute of Technology (KIT), Karlsruhe Nano Micro Facility, Hermann-von Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany
| | - Yangxin Wang
- Institute of Biological and Chemical Systems (IBCS), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany
| | - Victor R de la Rosa
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, Ghent, 9000, Belgium
| | - Sylwia Sekula-Neuner
- n.able GmbH, Hermann-von Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany.,Karlsruhe Institute of Technology (KIT), Karlsruhe Nano Micro Facility, Hermann-von Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany
| | - Michael Hirtz
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany.,Karlsruhe Institute of Technology (KIT), Karlsruhe Nano Micro Facility, Hermann-von Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, Ghent, 9000, Belgium
| | - Guillaume Delaittre
- Institute of Biological and Chemical Systems (IBCS), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344, Germany.,Organic Functional Molecules, Organic Chemistry, University of Wuppertal, Gaußstrasse 20, Wuppertal, 42119, Germany
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18
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Mazánková V, Sťahel P, Matoušková P, Brablec A, Čech J, Prokeš L, Buršíková V, Stupavská M, Lehocký M, Ozaltin K, Humpolíček P, Trunec D. Atmospheric Pressure Plasma Polymerized 2-Ethyl-2-oxazoline Based Thin Films for Biomedical Purposes. Polymers (Basel) 2020; 12:polym12112679. [PMID: 33202725 PMCID: PMC7697250 DOI: 10.3390/polym12112679] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 11/06/2020] [Accepted: 11/10/2020] [Indexed: 12/13/2022] Open
Abstract
Polyoxazoline thin coatings were deposited on glass substrates using atmospheric pressure plasma polymerization from 2-ethyl-2-oxazoline vapours. The plasma polymerization was performed in dielectric barrier discharge burning in nitrogen at atmospheric pressure. The thin films stable in aqueous environments were obtained at the deposition with increased substrate temperature, which was changed from 20 ∘C to 150 ∘C. The thin film deposited samples were highly active against both S. aureus and E. coli strains in general. The chemical composition of polyoxazoline films was studied by FTIR and XPS, the mechanical properties of films were studied by depth sensing indentation technique and by scratch tests. The film surface properties were studied by AFM and by surface energy measurement. After tuning the deposition parameters (i.e., monomer flow rate and substrate temperature), stable films, which resist bacterial biofilm formation and have cell-repellent properties, were achieved. Such antibiofouling polyoxazoline thin films can have many potential biomedical applications.
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Affiliation(s)
- Věra Mazánková
- Department of Mathematics and Physics, Faculty of Military Technology, University of Defence in Brno, Kounicova 65, 662 10 Brno, Czech Republic
- Institute of Physical and Applied Chemistry, Faculty of Chemistry, Brno University of Technology, Purkyňova 118, 612 00 Brno, Czech Republic
- Correspondence: ; Tel.: +420-973-442-073
| | - Pavel Sťahel
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic; (P.S.); (A.B.); (J.Č.); (L.P.); (V.B.); (M.S.); (D.T.)
| | - Petra Matoušková
- Institute of Food Science and Biotechnology, Faculty of Chemistry, Brno University of Technology, Purkyňova 118, 612 00 Brno, Czech Republic;
| | - Antonín Brablec
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic; (P.S.); (A.B.); (J.Č.); (L.P.); (V.B.); (M.S.); (D.T.)
| | - Jan Čech
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic; (P.S.); (A.B.); (J.Č.); (L.P.); (V.B.); (M.S.); (D.T.)
| | - Lubomír Prokeš
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic; (P.S.); (A.B.); (J.Č.); (L.P.); (V.B.); (M.S.); (D.T.)
| | - Vilma Buršíková
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic; (P.S.); (A.B.); (J.Č.); (L.P.); (V.B.); (M.S.); (D.T.)
| | - Monika Stupavská
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic; (P.S.); (A.B.); (J.Č.); (L.P.); (V.B.); (M.S.); (D.T.)
| | - Marián Lehocký
- Centre of Polymer Systems, Tomas Bata University in Zlín, Trida Tomase Bati 5678, 760 01 Zlín, Czech Republic; (M.L.); (K.O.); (P.H.)
- Faculty of Technology, Tomas Bata University in Zlín, Vavreckova 275, 760 01 Zlín, Czech Republic
| | - Kadir Ozaltin
- Centre of Polymer Systems, Tomas Bata University in Zlín, Trida Tomase Bati 5678, 760 01 Zlín, Czech Republic; (M.L.); (K.O.); (P.H.)
| | - Petr Humpolíček
- Centre of Polymer Systems, Tomas Bata University in Zlín, Trida Tomase Bati 5678, 760 01 Zlín, Czech Republic; (M.L.); (K.O.); (P.H.)
- Faculty of Technology, Tomas Bata University in Zlín, Vavreckova 275, 760 01 Zlín, Czech Republic
| | - David Trunec
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic; (P.S.); (A.B.); (J.Č.); (L.P.); (V.B.); (M.S.); (D.T.)
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19
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Wang X, Li Y, Wang D, Wang X, Yuan W, Zhao W, Xia G. Evaluation of antitumor efficacy of folate-poly(2-ethyl-2-oxazoline)-distearoyl phosphatidyl ethanolamine based liposome. Pharm Dev Technol 2020; 26:110-118. [PMID: 33104406 DOI: 10.1080/10837450.2020.1842885] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
This study aims to explore and evaluate the antitumor efficacy of doxorubicin (DOX)-loaded liposomes containing the novel tri-block polymer folate-poly (2-ethyl-2-oxazoline)-distearoyl phosphatidyl ethanolamine (F-PEOz-DSPE), compared with folate-polyethylene glycol-distearoyl phosphatidyl ethanolamine (F-PEG-DSPE) to offer an alternative for PEG decorated carriers. PEOz, a pH-sensitive polymer, exhibits similar solubility and segmental flexibility to PEG. In our previous study, PEOz was employed to an F-PEOz-DSPE which was segmentally similar to F-PEG-DSPE and exhibited selective targeting and pH-sensitivity in tumor cells. In this work, DOX-loaded liposomes containing F-PEOz-DSPE (F-PEOz liposome) or F-PEG-DSPE (F-PEG liposome) were prepared. In vivo/vitro antitumor efficacy and biodistribution were compared between the two liposomes. F-PEOz liposome showed higher in vitro antitumor activity and significantly stronger inhibition of tumor growth in HeLa tumor-bearing nude mice (tumor inhibition rate, 81.20 vs 52.99% with the treatment of 9 mg/kg DOX-loaded F-PEOz liposome/F-PEG liposome) and much less toxicity than free DOX. In vivo fluorescence imaging experiment confirmed that F-PEOz liposome accumulated much more than F-PEG liposome in tumor. Based on the above, F-PEOz liposome may be a promising carrier in tumor chemotherapy to achieve better therapeutic efficacy.
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Affiliation(s)
- Xiaowei Wang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, P. R. China
| | - Yunfei Li
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, P. R. China
| | - Dan Wang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, P. R. China
| | - Xuelei Wang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, P. R. China
| | - Wei Yuan
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, P. R. China
| | - Wuli Zhao
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, P. R. China
| | - Guimin Xia
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, P. R. China
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20
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Biodegradable polyurethane PMeOx-PU(SS)-PMeOx micelles with redox and pH-sensitivity for efficient delivery of doxorubicin. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.110054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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21
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Czich S, Wloka T, Rothe H, Rost J, Penzold F, Kleinsteuber M, Gottschaldt M, Schubert US, Liefeith K. Two-Photon Polymerized Poly(2-Ethyl-2-Oxazoline) Hydrogel 3D Microstructures with Tunable Mechanical Properties for Tissue Engineering. Molecules 2020; 25:E5066. [PMID: 33142860 PMCID: PMC7663365 DOI: 10.3390/molecules25215066] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 10/23/2020] [Accepted: 10/26/2020] [Indexed: 12/02/2022] Open
Abstract
The main task of tissue engineering (TE) is to reproduce, replicate, and mimic all kinds of tissues in the human body. Nowadays, it has been proven useful in TE to mimic the natural extracellular matrix (ECM) by an artificial ECM (scaffold) based on synthetic or natural biomaterials to regenerate the physiological tissue/organ architecture and function. Hydrogels have gained interest in the TE community because of their ability to absorb water similar to physiological tissues, thus mechanically simulating the ECM. In this work, we present a novel hydrogel platform based on poly(2-ethyl-2-oxazoline)s, which can be processed to 3D microstructures via two-photon polymerization (2PP) with tunable mechanical properties using monomers and crosslinker with different degrees of polymerization (DP) for future applications in TE. The ideal parameters (laser power and writing speed) for optimal polymerization via 2PP were obtained using a specially developed evaluation method in which the obtained structures were binarized and compared to the computer-aided design (CAD) model. This evaluation was performed for each composition. We found that it was possible to tune the mechanical properties not only by application of different laser parameters but also by mixing poly(2-ethyl-2-oxazoline)s with different chain lengths and variation of the crosslink density. In addition, the swelling behavior of different fabricated hydrogels were investigated. To gain more insight into the viscoelastic behavior of different fabricated materials, stress relaxation tests via nanoindentation experiments were performed. These new hydrogels can be processed to 3D microstructures with high structural integrity using optimal laser parameter settings, opening a wide range of application properties in TE for this material platform.
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Affiliation(s)
- Steffen Czich
- Institute for Bioprocessing and Analytical Measurement Techniques e.V., Rosenhof, 37308 Heilbad Heiligenstadt, Germany; (S.C.); (H.R.); (J.R.); (F.P.)
| | - Thomas Wloka
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany; (T.W.); (M.K.); (M.G.); (U.S.S.)
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Holger Rothe
- Institute for Bioprocessing and Analytical Measurement Techniques e.V., Rosenhof, 37308 Heilbad Heiligenstadt, Germany; (S.C.); (H.R.); (J.R.); (F.P.)
| | - Jürgen Rost
- Institute for Bioprocessing and Analytical Measurement Techniques e.V., Rosenhof, 37308 Heilbad Heiligenstadt, Germany; (S.C.); (H.R.); (J.R.); (F.P.)
| | - Felix Penzold
- Institute for Bioprocessing and Analytical Measurement Techniques e.V., Rosenhof, 37308 Heilbad Heiligenstadt, Germany; (S.C.); (H.R.); (J.R.); (F.P.)
| | - Maximilian Kleinsteuber
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany; (T.W.); (M.K.); (M.G.); (U.S.S.)
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Michael Gottschaldt
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany; (T.W.); (M.K.); (M.G.); (U.S.S.)
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Ulrich S. Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany; (T.W.); (M.K.); (M.G.); (U.S.S.)
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Klaus Liefeith
- Institute for Bioprocessing and Analytical Measurement Techniques e.V., Rosenhof, 37308 Heilbad Heiligenstadt, Germany; (S.C.); (H.R.); (J.R.); (F.P.)
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Deodhar S, Dash AK, North EJ, Hulce M. Development and In Vitro Evaluation of Long Circulating Liposomes for Targeted Delivery of Gemcitabine and Irinotecan in Pancreatic Ductal Adenocarcinoma. AAPS PharmSciTech 2020; 21:231. [PMID: 32778980 DOI: 10.1208/s12249-020-01745-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 07/05/2020] [Indexed: 12/18/2022] Open
Abstract
The classically used nontargeted chemotherapeutic approach to pancreatic cancer has a dual drawback of suboptimal drug delivery at the target site and the systemic side effects produced by the unfettered exposure of the drug to healthy tissue. This study has the objective of developing novel poly(2-ethyl-2-oxazoline) (PETOX)-based long circulating liposomes loaded with gemcitabine and irinotecan for the treatment of pancreatic ductal adenocarcinoma, with a juxtaposition to PEGylated and uncoated liposomes. A PETOX-cholesteryl chloroformate lipopolymer conjugate (PETOX-ChC) with a carbonate linkage was prepared and characterized by 1H NMR, FTIR, and DSC. Liposomes were prepared using the thin film hydration technique followed by freeze-thaw and membrane extrusion methods. Liposome characterization includes particle size determination, zeta potential determination using a zetameter, and structural elucidation using 31P NMR and cryo-TEM. The PETOXylated liposomes showed a particle size of 180.1 ± 2.2 nm and a zeta potential of - 33.63 ± 1.23 mV. The liposomal combination therapy of gemcitabine and irinotecan was found to have an IC50 value 39 times lower in comparison to the drug combination in solution, while the PEGylated and PETOXylated liposomes showed IC50 values 1.6 times lower and 2 times lower than that of uncoated liposomes, respectively, against Mia PaCa II pancreatic cancer cell line. The PEGylated and PETOXylated liposomes showed 4.1 and 5.4 times slower macrophagial uptake in vitro in comparison to the uncoated liposomes respectively. The PEGylated liposomes showed 11% higher in vitro macrophagial uptake in comparison to PETOXylated liposomes.
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Gulyuz S, Bayram D, Ozkose UU, Bolat ZB, Kocak P, Saka OM, Devrim B, Parlak Khalily M, Telci D, Sahin F, Özçubukçu S, Sezer E, Tasdelen MA, Alpturk O, Bozkır A, Yilmaz O. Synthesis, biocompatibility and gene encapsulation of poly(2-Ethyl 2-Oxazoline)-dioleoyl phosphatidylethanolamine (PEtOx-DOPE) and post-modifications with peptides and fluorescent dye coumarin. INT J POLYM MATER PO 2020. [DOI: 10.1080/00914037.2020.1767617] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Sevgi Gulyuz
- Materials Institution, Marmara Research Center, TUBITAK, Kocaeli, Turkey
- Faculty of Science and Letters, Department of Chemistry, Istanbul Technical University, Istanbul, Turkey
| | - Duygu Bayram
- Materials Institution, Marmara Research Center, TUBITAK, Kocaeli, Turkey
- Faculty of Science and Letters, Department of Chemistry, Istanbul Technical University, Istanbul, Turkey
| | - Umut Ugur Ozkose
- Materials Institution, Marmara Research Center, TUBITAK, Kocaeli, Turkey
- Faculty of Science and Letters, Department of Chemistry, Istanbul Technical University, Istanbul, Turkey
- Faculty of Science and Letters, Department of Chemistry, Piri Reis University, Istanbul, Turkey
| | - Zeynep Busra Bolat
- Faculty of Engineering and Architecture, Department of Genetics and Bioengineering, Yeditepe University, Istanbul, Turkey
- Faculty of Engineering and Natural Sciences, Department of Molecular Biology and Genetics, Istanbul Sabahattin Zaim University, Istanbul, Turkey
| | - Polen Kocak
- Faculty of Engineering and Architecture, Department of Genetics and Bioengineering, Yeditepe University, Istanbul, Turkey
| | - Ongun Mehmet Saka
- Faculty of Pharmacy, Department of Pharmaceutical Technology, Ankara University, Ankara, Turkey
| | - Burcu Devrim
- Faculty of Pharmacy, Department of Pharmaceutical Technology, Ankara University, Ankara, Turkey
| | - Melek Parlak Khalily
- Faculty of Arts and Science, Department of Chemistry, Yozgat Bozok University, Yozgat, Turkey
| | - Dilek Telci
- Faculty of Engineering and Architecture, Department of Genetics and Bioengineering, Yeditepe University, Istanbul, Turkey
| | - Fikrettin Sahin
- Faculty of Engineering and Architecture, Department of Genetics and Bioengineering, Yeditepe University, Istanbul, Turkey
| | - Salih Özçubukçu
- Faculty of Arts and Science, Department of Chemistry, Middle East Technical University, Ankara, Turkey
| | - Esma Sezer
- Faculty of Science and Letters, Department of Chemistry, Istanbul Technical University, Istanbul, Turkey
| | - Mehmet Atilla Tasdelen
- Faculty of Engineering, Department of Polymer Engineering, Yalova University, Yalova, Turkey
| | - Onur Alpturk
- Faculty of Science and Letters, Department of Chemistry, Istanbul Technical University, Istanbul, Turkey
| | - Asuman Bozkır
- Faculty of Pharmacy, Department of Pharmaceutical Technology, Ankara University, Ankara, Turkey
| | - Ozgur Yilmaz
- Materials Institution, Marmara Research Center, TUBITAK, Kocaeli, Turkey
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Trinh Che L, Hiorth M, Hoogenboom R, Kjøniksen AL. Complex Temperature and Concentration Dependent Self-Assembly of Poly(2-oxazoline) Block Copolymers. Polymers (Basel) 2020; 12:polym12071495. [PMID: 32635506 PMCID: PMC7407653 DOI: 10.3390/polym12071495] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 06/24/2020] [Accepted: 06/26/2020] [Indexed: 11/17/2022] Open
Abstract
The effect of polymer concentration on the temperature-induced self-association of a block copolymer comprising a poly(2-ethyl-2-oxazoline) block and a random copolymer block consisting of 2-ethyl-2-oxazoline and 2-n-propyl-2-oxazoline (PEtO80-block-P(EtOxx-stat-PropO40-x) with x = 0, 4, or 8 were investigated by dynamic light scattering (DLS) and transmittance measurements (turbidimetry). The polymers reveal a complex aggregation behavior with up to three relaxation modes in the DLS data and with a transmittance that first goes through a minimum before it declines at high temperatures. At low temperatures, unassociated polymer chains were found to co-exist with larger aggregates. As the temperature is increased, enhanced association and contraction of the aggregates results in a drop of the transmittance values. The aggregates fragment into smaller micellar-like clusters when the temperature is raised further, causing the samples to become optically clear again. At high temperatures, the polymers aggregate into large compact clusters, and the samples become turbid. Interestingly, very large aggregates were observed at low temperatures when the polymer concentrations were low. The formation of these aggregates was also promoted by a more hydrophilic copolymer structure. The formation of large aggregates with an open structure at conditions where the solvent conditions are improved is probably caused by depletion flocculation of the smaller aggregates.
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Affiliation(s)
- Loan Trinh Che
- Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, 0315 Oslo, Norway;
| | - Marianne Hiorth
- Department of Pharmacy, School of Pharmacy, University of Oslo, P.O. Box 1068 Blindern, 0316 Oslo, Norway;
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, B-9000 Ghent, Belgium
- Correspondence: (R.H.); (A.-L.K.)
| | - Anna-Lena Kjøniksen
- Faculty of Engineering, Østfold University College, P.O. Box 700, 1757 Halden, Norway
- Correspondence: (R.H.); (A.-L.K.)
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Simon L, Marcotte N, Devoisselle JM, Begu S, Lapinte V. Recent advances and prospects in nano drug delivery systems using lipopolyoxazolines. Int J Pharm 2020; 585:119536. [PMID: 32531447 DOI: 10.1016/j.ijpharm.2020.119536] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 06/05/2020] [Accepted: 06/06/2020] [Indexed: 11/29/2022]
Abstract
Facing the growing demand in nano drug delivery systems (nDDS), hybrid excipients based on natural molecules and well-defined synthetic polymers are intensively investigated. Lipopolyoxazolines (LipoPOx) composed of a polyoxazoline block (POx) and a lipid or lipid-like derivative are detailed in this review. The nature of lipids used, the route to synthesize LipoPOx and their advantages for the formulation of drugs are reported. The place of POx family in nanomedicine is discussed compared to PEG, considered as the gold standard of hydrophilic polymers. LipoPOx nanoformulations including liposomes, mixed micelles, lipid nanocapsules are provided alongside discussion of the nDDS for intravenous or topical administration.
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Affiliation(s)
- L Simon
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | - N Marcotte
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | | | - S Begu
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier, France.
| | - V Lapinte
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier, France.
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26
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Van Den Broeck E, Verbraeken B, Dedecker K, Cnudde P, Vanduyfhuys L, Verstraelen T, Van Hecke K, Jerca VV, Catak S, Hoogenboom R, Van Speybroeck V. Cation−π Interactions Accelerate the Living Cationic Ring-Opening Polymerization of Unsaturated 2-Alkyl-2-oxazolines. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00865] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Elias Van Den Broeck
- Center for Molecular Modeling, Ghent University, Technologiepark 46, 9052 Zwijnaarde, Belgium
| | - Bart Verbraeken
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, 9000 Gent, Belgium
| | - Karen Dedecker
- Center for Molecular Modeling, Ghent University, Technologiepark 46, 9052 Zwijnaarde, Belgium
| | - Pieter Cnudde
- Center for Molecular Modeling, Ghent University, Technologiepark 46, 9052 Zwijnaarde, Belgium
| | - Louis Vanduyfhuys
- Center for Molecular Modeling, Ghent University, Technologiepark 46, 9052 Zwijnaarde, Belgium
| | - Toon Verstraelen
- Center for Molecular Modeling, Ghent University, Technologiepark 46, 9052 Zwijnaarde, Belgium
| | - Kristof Van Hecke
- XStruct, Department of Chemistry, Ghent University, Krijgslaan 281-S3, B-9000 Ghent, Belgium
| | - Valentin Victor Jerca
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, 9000 Gent, Belgium
- Centre for Organic Chemistry “Costin D. Nenitzescu”, Romanian Academy, 202B Spl. Independentei CP 35-108, Bucharest 060023, Romania
| | - Saron Catak
- Center for Molecular Modeling, Ghent University, Technologiepark 46, 9052 Zwijnaarde, Belgium
- Department of Chemistry, Bogazici University, Bebek, 34342 Istanbul, Turkey
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, 9000 Gent, Belgium
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27
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Simon L, Lapinte V, Lionnard L, Marcotte N, Morille M, Aouacheria A, Kissa K, Devoisselle J, Bégu S. Polyoxazolines based lipid nanocapsules for topical delivery of antioxidants. Int J Pharm 2020; 579:119126. [DOI: 10.1016/j.ijpharm.2020.119126] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 02/04/2020] [Accepted: 02/05/2020] [Indexed: 01/03/2023]
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28
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Moncalvo F, Martinez Espinoza MI, Cellesi F. Nanosized Delivery Systems for Therapeutic Proteins: Clinically Validated Technologies and Advanced Development Strategies. Front Bioeng Biotechnol 2020; 8:89. [PMID: 32117952 PMCID: PMC7033645 DOI: 10.3389/fbioe.2020.00089] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 01/30/2020] [Indexed: 12/18/2022] Open
Abstract
The impact of protein therapeutics in healthcare is steadily increasing, due to advancements in the field of biotechnology and a deeper understanding of several pathologies. However, their safety and efficacy are often limited by instability, short half-life and immunogenicity. Nanodelivery systems are currently being investigated for overcoming these limitations and include covalent attachment of biocompatible polymers (PEG and other synthetic or naturally derived macromolecules) as well as protein nanoencapsulation in colloidal systems (liposomes and other lipid or polymeric nanocarriers). Such strategies have the potential to develop next-generation protein therapeutics. Herein, we review recent research progresses on these nanodelivery approaches, as well as future directions and challenges.
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Affiliation(s)
| | | | - Francesco Cellesi
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano, Milan, Italy
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29
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Bi S, Feng C, Wang M, Kong M, Liu Y, Cheng X, Wang X, Chen X. Temperature responsive self-assembled hydroxybutyl chitosan nanohydrogel based on homogeneous reaction for smart window. Carbohydr Polym 2020; 229:115557. [DOI: 10.1016/j.carbpol.2019.115557] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 10/29/2019] [Accepted: 10/29/2019] [Indexed: 12/18/2022]
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30
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Wen L, Huang S, Du W, Zhu C, Xu H. Effects of the molecular weight and molar ratio of poly(2-ethyl-2-oxazoline)-based lipid on the pH sensitivity, stability, and antitumor efficacy of liposomes. Drug Dev Ind Pharm 2020; 46:283-295. [PMID: 31944130 DOI: 10.1080/03639045.2020.1717514] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In this study, we evaluated and screened the effects of the molecular weight (MW) and molar ratio of poly(2-ethyl-2-oxazoline)-cholesteryl methyl carbonate (PEtOz-CHMC) on the pH sensitivity, stability, and antitumor efficacy of liposomes. The pH sensitivity of PEtOz-CHMC with different MWs and molar ratios was screened by drug release and cytotoxicity experiments at different pH levels. Results indicated that the liposomes coated with PEtOz1k-CHMC (7% molar ratio) and PEtOz2k-CHMC (5% molar ratio) exhibited the desirable pH responsiveness. When the MW of PEtOz was relatively low, 7% of the modified ratio obtained the strongest stability, but the turbidity of the liposomes did not obviously change when the molar ratio of PEtOz-CHMC was further increased. A375 cells were used as models to investigate the cellular uptake and intracellular localization of coumarin-6-loaded liposomes (C6-L), PEGylated liposomes (PEG-C6-L), and PEtOzylated liposomes. PEtOz1k-C6-L and PEtOz2k-C6-L presented remarkably stronger fluorescence intensity at low pH than at pH 7.4, whereas C6-L and PEG-C6-L did not achieve any obvious diversity at different pH conditions. Compared with C6-L and PEG-C6-L, PEtOz-C6-L showed efficient intracellular trafficking, including endosomal/lysosomal escape and cytoplasmic release. Pharmacokinetic experiments demonstrated that half-lives of PEG2k-C6-L, PEtOz2k-C6-L, and PEtOz1k-C6-L were 11.89-, 7.00-, and 5.29-fold times higher than those of C6-L, respectively. Among the liposomes, the DOX·HCl-loaded liposomes coated with PEtOz2k-CHMC demonstrated the strongest antitumor efficacy against B16 tumor xenograft models in vivo. These findings provide the feasibility of using PEtOz-CHMC with optimal pH sensitivity and long circulation to extend the application of liposomes to efficient anticancer drug delivery.
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Affiliation(s)
- Luqiao Wen
- Department of Pharmacy, College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, People's Republic of China
| | - Shouzhen Huang
- Department of Pharmacy, College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, People's Republic of China
| | - Weiang Du
- Department of Pharmacy, College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, People's Republic of China
| | - Caili Zhu
- Department of Pharmacy, College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, People's Republic of China
| | - Huan Xu
- Department of Pharmacy, College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, People's Republic of China
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31
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Zhang H, Liu X, Xu T, Xu K, Du B, Li Y. Biodegradable reduction and pH dual-sensitive polymer micelles based on poly(2-ethyl-2-oxazoline) for efficient delivery of curcumin. RSC Adv 2020; 10:25435-25445. [PMID: 35518633 PMCID: PMC9055264 DOI: 10.1039/d0ra02779k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 06/26/2020] [Indexed: 12/13/2022] Open
Abstract
A series of disulfide-linked amphiphilic polymers polyoxaline-SS-poly(lactide) (PEtOx-SS-PLA) were prepared and self-assembled into nano-micelles in water.
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Affiliation(s)
- Hena Zhang
- School of Chemistry & Materials Science
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- China
| | - Xiaojun Liu
- School of Chemistry & Materials Science
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- China
| | - Ting Xu
- School of Chemistry & Materials Science
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- China
| | - Kang Xu
- School of Chemistry & Materials Science
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- China
| | - Baixiang Du
- School of Chemistry & Materials Science
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- China
| | - Yuling Li
- School of Chemistry & Materials Science
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- China
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32
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Sedlacek O, Hoogenboom R. Drug Delivery Systems Based on Poly(2‐Oxazoline)s and Poly(2‐Oxazine)s. ADVANCED THERAPEUTICS 2019. [DOI: 10.1002/adtp.201900168] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Ondrej Sedlacek
- Supramolecular Chemistry GroupCentre of Macromolecular Chemistry (CMaC)Department of Organic and Macromolecular ChemistryGhent University Krijgslaan 281 S4 B‐9000 Ghent Belgium
| | - Richard Hoogenboom
- Supramolecular Chemistry GroupCentre of Macromolecular Chemistry (CMaC)Department of Organic and Macromolecular ChemistryGhent University Krijgslaan 281 S4 B‐9000 Ghent Belgium
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33
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Sťahel P, Mazánková V, Tomečková K, Matoušková P, Brablec A, Prokeš L, Jurmanová J, Buršíková V, Přibyl R, Lehocký M, Humpolíček P, Ozaltin K, Trunec D. Atmospheric Pressure Plasma Polymerized Oxazoline-Based Thin Films-Antibacterial Properties and Cytocompatibility Performance. Polymers (Basel) 2019; 11:E2069. [PMID: 31842276 PMCID: PMC6960831 DOI: 10.3390/polym11122069] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 12/02/2019] [Accepted: 12/06/2019] [Indexed: 02/06/2023] Open
Abstract
Polyoxazolines are a new promising class of polymers for biomedical applications. Antibiofouling polyoxazoline coatings can suppress bacterial colonization of medical devices, which can cause infections to patients. However, the creation of oxazoline-based films using conventional methods is difficult. This study presents a new way to produce plasma polymerized oxazoline-based films with antibiofouling properties and good biocompatibility. The films were created via plasma deposition from 2-methyl-2-oxazoline vapors in nitrogen atmospheric pressure dielectric barrier discharge. Diverse film properties were achieved by increasing the substrate temperature at the deposition. The physical and chemical properties of plasma polymerized polyoxazoline films were studied by SEM, EDX, FTIR, AFM, depth-sensing indentation technique, and surface energy measurement. After tuning of the deposition parameters, films with a capacity to resist bacterial biofilm formation were achieved. Deposited films also promote cell viability.
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Affiliation(s)
- Pavel Sťahel
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic; (P.S.); (A.B.); (L.P.); (J.J.); (V.B.); (R.P.)
| | - Věra Mazánková
- Faculty of Chemistry, Institute of Physical and Applied Chemistry, Brno University of Technology, Purkyňova 118, 612 00 Brno, Czech Republic; (V.M.); (K.T.)
- Department of Mathematics and Physics, Faculty of Military Technology, University of Defence in Brno, Kounicova 65, 662 10 Brno, Czech Republic
| | - Klára Tomečková
- Faculty of Chemistry, Institute of Physical and Applied Chemistry, Brno University of Technology, Purkyňova 118, 612 00 Brno, Czech Republic; (V.M.); (K.T.)
| | - Petra Matoušková
- Faculty of Chemistry, Institute of Food Science and Biotechnology, Brno University of Technology, Purkyňova 118, 612 00 Brno, Czech Republic;
| | - Antonín Brablec
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic; (P.S.); (A.B.); (L.P.); (J.J.); (V.B.); (R.P.)
| | - Lubomír Prokeš
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic; (P.S.); (A.B.); (L.P.); (J.J.); (V.B.); (R.P.)
| | - Jana Jurmanová
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic; (P.S.); (A.B.); (L.P.); (J.J.); (V.B.); (R.P.)
| | - Vilma Buršíková
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic; (P.S.); (A.B.); (L.P.); (J.J.); (V.B.); (R.P.)
| | - Roman Přibyl
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic; (P.S.); (A.B.); (L.P.); (J.J.); (V.B.); (R.P.)
| | - Marián Lehocký
- Centre of Polymer Systems, Tomas Bata University in Zlín, Trida Tomase Bati 5678, 760 01 Zlín, Czech Republic; (M.L.); (P.H.); (K.O.)
| | - Petr Humpolíček
- Centre of Polymer Systems, Tomas Bata University in Zlín, Trida Tomase Bati 5678, 760 01 Zlín, Czech Republic; (M.L.); (P.H.); (K.O.)
| | - Kadir Ozaltin
- Centre of Polymer Systems, Tomas Bata University in Zlín, Trida Tomase Bati 5678, 760 01 Zlín, Czech Republic; (M.L.); (P.H.); (K.O.)
| | - David Trunec
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic; (P.S.); (A.B.); (L.P.); (J.J.); (V.B.); (R.P.)
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Ozkose UU, Yilmaz O, Alpturk O. Synthesis of poly(2-ethyl-2-oxazoline)-b-poly(ε-caprolactone) conjugates by a new modular strategy. Polym Bull (Berl) 2019. [DOI: 10.1007/s00289-019-03038-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Podevyn A, Arys K, de la Rosa VR, Glassner M, Hoogenboom R. End-group functionalization of poly(2-oxazoline)s using methyl bromoacetate as initiator followed by direct amidation. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.109273] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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39
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El Mohtadi F, d'Arcy R, Yang X, Turhan ZY, Alshamsan A, Tirelli N. Main Chain Polysulfoxides as Active 'Stealth' Polymers with Additional Antioxidant and Anti-Inflammatory Behaviour. Int J Mol Sci 2019; 20:E4583. [PMID: 31533205 PMCID: PMC6770853 DOI: 10.3390/ijms20184583] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 09/09/2019] [Accepted: 09/14/2019] [Indexed: 01/03/2023] Open
Abstract
We present the evaluation of a sulfoxide-based polymer (poly(propylene sulfoxide), PPSO) as a potential 'stealth' macromolecule, and at the same time as a pharmacologically active (anti-inflammatory/anti-oxidant) material. The combination of these two concepts may at first seem peculiar since the gold standard polymer in biomaterials and drug delivery, poly(ethylene glycol) (PEG), is 'stealth' due to its chemical and biological inertness, which makes it hardly biologically active. Polysulfoxides, on the contrary, may couple a substantial inertness towards biomolecules under homeostatic conditions, with the possibility to scavenge reactive oxygen species (ROS) associated to inflammation. Polysulfoxides, therefore, are rather uniquely, 'active' 'stealth' polymers. Here, we describe the synthesis of PPSO through controlled oxidation of poly(propylene sulfide) (PPS), which on its turn was obtained via anionic ring-opening polymerization. In vitro, PPSO was characterized by a low toxicity (IC50 ~7 mg/mL at 24 h on human dermal fibroblasts) and a level of complement activation (in human plasma) and macrophage uptake slightly lower than PEG of a similar size. Importantly, and differently from PEG, on LPS-activated macrophages, PPSO showed a strong and dose-dependent ROS (hydrogen peroxide and hypochlorite)-scavenging activity, which resulted in a corresponding reduction of cytokine production.
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Affiliation(s)
- Farah El Mohtadi
- Division of Pharmacy and Optometry, School of Health Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK.
| | - Richard d'Arcy
- Laboratory for Polymers and Biomaterials, Fondazione Istituto Italiano di Tecnologia, 16163 Genova, Italy.
| | - Xiaoye Yang
- Division of Pharmacy and Optometry, School of Health Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK.
- Department of Pharmaceutics, College of Pharmacy, Shandong University, Jinan 250012, China.
| | - Zulfiye Yesim Turhan
- Division of Pharmacy and Optometry, School of Health Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK.
| | - Aws Alshamsan
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia.
- Nanobiotechnology Unit, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia.
| | - Nicola Tirelli
- Division of Pharmacy and Optometry, School of Health Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK.
- Laboratory for Polymers and Biomaterials, Fondazione Istituto Italiano di Tecnologia, 16163 Genova, Italy.
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Abstract
The poor pharmacokinetic parameters and low solubility of many anticancer therapeutics have warranted the use of drug-delivery systems such as liposomes. Overcoming some drawbacks of the conventional liposomes, targeted liposomal delivery by longer circulation time by addition of poly(ethylene glycol) to the liposomal surface and further adding specific ligands to achieve ligand selective retention and uptake has been introduced. PEGylated liposomes are the only second-generation liposomal formulations in clinical use and are now being challenged with the allergenic response they pose even in the treatment of naive patients. This article will review the challenges and hindrances in the use of long circulating liposomes and explore the opportunities to overcome this issue.
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Moghimi SM, Simberg D, Skotland T, Yaghmur A, Hunter AC. The Interplay Between Blood Proteins, Complement, and Macrophages on Nanomedicine Performance and Responses. J Pharmacol Exp Ther 2019; 370:581-592. [PMID: 30940695 PMCID: PMC11047092 DOI: 10.1124/jpet.119.258012] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Accepted: 03/28/2019] [Indexed: 12/17/2022] Open
Abstract
In the blood, depending on their physicochemical characteristics, nanoparticles attract a wide range of plasma biomolecules. The majority of blood biomolecules bind nonspecifically to nanoparticles. On the other hand, biomolecules such as pattern-recognition complement-sensing proteins may recognize some structural determinants of the pristine surface, causing complement activation. Adsorption of nonspecific blood proteins could also recruit natural antibodies and initiate complement activation, and this seems to be a global process with many preclinical and clinical nanomedicines. We discuss these issues, since complement activation has ramifications in nanomedicine stability and pharmacokinetics, as well as in inflammation and disease progression. Some studies have also predicted a role for complement systems in infusion-related reactions, whereas others show a direct role for macrophages and other immune cells independent of complement activation. We comment on these discrepancies and suggest directions for exploring the underlying mechanisms.
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Affiliation(s)
- S Moein Moghimi
- School of Pharmacy and Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom (S.M.M.); Colorado Center for Nanomedicine and Nanosafety, University of Colorado Anschutz Medical Campus (S.M.M., D.S.), and Translational Bio-Nanosciences Laboratory, Department of Pharmaceutical Sciences, The Skaggs School of Pharmacy and Pharmaceutical Sciences (D.S.), University of Colorado Anschutz Medical Campus, Aurora, Colorado; Department of Molecular Cell Biology, Institute for Cancer Research, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway (T.S.); Department of Pharmacy, University of Copenhagen, Copenhagen Ø, Denmark (A.Y.); and Leicester School of Pharmacy, De Montfort University, The Gateway, Leicester, United Kingdom (A.C.H.)
| | - Dmitri Simberg
- School of Pharmacy and Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom (S.M.M.); Colorado Center for Nanomedicine and Nanosafety, University of Colorado Anschutz Medical Campus (S.M.M., D.S.), and Translational Bio-Nanosciences Laboratory, Department of Pharmaceutical Sciences, The Skaggs School of Pharmacy and Pharmaceutical Sciences (D.S.), University of Colorado Anschutz Medical Campus, Aurora, Colorado; Department of Molecular Cell Biology, Institute for Cancer Research, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway (T.S.); Department of Pharmacy, University of Copenhagen, Copenhagen Ø, Denmark (A.Y.); and Leicester School of Pharmacy, De Montfort University, The Gateway, Leicester, United Kingdom (A.C.H.)
| | - Tore Skotland
- School of Pharmacy and Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom (S.M.M.); Colorado Center for Nanomedicine and Nanosafety, University of Colorado Anschutz Medical Campus (S.M.M., D.S.), and Translational Bio-Nanosciences Laboratory, Department of Pharmaceutical Sciences, The Skaggs School of Pharmacy and Pharmaceutical Sciences (D.S.), University of Colorado Anschutz Medical Campus, Aurora, Colorado; Department of Molecular Cell Biology, Institute for Cancer Research, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway (T.S.); Department of Pharmacy, University of Copenhagen, Copenhagen Ø, Denmark (A.Y.); and Leicester School of Pharmacy, De Montfort University, The Gateway, Leicester, United Kingdom (A.C.H.)
| | - Anan Yaghmur
- School of Pharmacy and Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom (S.M.M.); Colorado Center for Nanomedicine and Nanosafety, University of Colorado Anschutz Medical Campus (S.M.M., D.S.), and Translational Bio-Nanosciences Laboratory, Department of Pharmaceutical Sciences, The Skaggs School of Pharmacy and Pharmaceutical Sciences (D.S.), University of Colorado Anschutz Medical Campus, Aurora, Colorado; Department of Molecular Cell Biology, Institute for Cancer Research, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway (T.S.); Department of Pharmacy, University of Copenhagen, Copenhagen Ø, Denmark (A.Y.); and Leicester School of Pharmacy, De Montfort University, The Gateway, Leicester, United Kingdom (A.C.H.)
| | - A Christy Hunter
- School of Pharmacy and Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom (S.M.M.); Colorado Center for Nanomedicine and Nanosafety, University of Colorado Anschutz Medical Campus (S.M.M., D.S.), and Translational Bio-Nanosciences Laboratory, Department of Pharmaceutical Sciences, The Skaggs School of Pharmacy and Pharmaceutical Sciences (D.S.), University of Colorado Anschutz Medical Campus, Aurora, Colorado; Department of Molecular Cell Biology, Institute for Cancer Research, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway (T.S.); Department of Pharmacy, University of Copenhagen, Copenhagen Ø, Denmark (A.Y.); and Leicester School of Pharmacy, De Montfort University, The Gateway, Leicester, United Kingdom (A.C.H.)
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42
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Simon L, Vincent M, Le Saux S, Lapinte V, Marcotte N, Morille M, Dorandeu C, Devoisselle JM, Bégu S. Polyoxazolines based mixed micelles as PEG free formulations for an effective quercetin antioxidant topical delivery. Int J Pharm 2019; 570:118516. [PMID: 31319148 DOI: 10.1016/j.ijpharm.2019.118516] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 07/09/2019] [Accepted: 07/10/2019] [Indexed: 12/13/2022]
Abstract
This study aims to prove the value of the polyoxazolines polymer family as surfactant in formulations for topical application and as an alternative to PEG overuse. The amphiphilic polyoxazolines (POx) were demonstrated to have less impact on cell viability of mice fibroblasts (NIH3T3) than their PEG counterparts. Mixed micelles, made of POx and phosphatidylcholine, were manufactured using thin film and high pressure homogenizer process. The mixed micelles were optimized to produce nanosized vesicles of about 20 nm with a spherical shape and stable over 28 days. The natural lipophilic antioxidant, quercetin, was successfully encapsulated (encapsulation efficiency 94 ± 4% and drug loading 3.6 ± 0.2%) in the mixed micelles with no morphological variation. Once loaded in the formulation, the quercetin impact on cell viability of NIH3T3 was decreased while its antioxidant activity remained unchanged. This work highlights the capacity of amphiphilic POx to create, in association with phospholipids, stable nanoformulations which show promise for topical delivery of antioxidant and ensure skin protection against oxidative stress.
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Affiliation(s)
- L Simon
- ICGM, Montpellier University, CNRS, ENSCM, Montpellier, France
| | - M Vincent
- ICGM, Montpellier University, CNRS, ENSCM, Montpellier, France
| | - S Le Saux
- ICGM, Montpellier University, CNRS, ENSCM, Montpellier, France
| | - V Lapinte
- ICGM, Montpellier University, CNRS, ENSCM, Montpellier, France
| | - N Marcotte
- ICGM, Montpellier University, CNRS, ENSCM, Montpellier, France
| | - M Morille
- ICGM, Montpellier University, CNRS, ENSCM, Montpellier, France
| | - C Dorandeu
- ICGM, Montpellier University, CNRS, ENSCM, Montpellier, France
| | - J M Devoisselle
- ICGM, Montpellier University, CNRS, ENSCM, Montpellier, France
| | - S Bégu
- ICGM, Montpellier University, CNRS, ENSCM, Montpellier, France
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43
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Arraez FJ, Xu X, Van Steenberge PHM, Jerca VV, Hoogenboom R, D’hooge DR. Macropropagation Rate Coefficients and Branching Levels in Cationic Ring-Opening Polymerization of 2-Ethyl-2-oxazoline through Prediction of Size Exclusion Chromatography Data. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00544] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Francisco J. Arraez
- Laboratory for Chemical Technology (LCT), Ghent University, Technologiepark 125, B-9052 Ghent, Belgium
| | - Xiaowen Xu
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, 9000 Ghent, Belgium
| | - Paul H. M. Van Steenberge
- Laboratory for Chemical Technology (LCT), Ghent University, Technologiepark 125, B-9052 Ghent, Belgium
| | - Valentin-Victor Jerca
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, 9000 Ghent, Belgium
- Centre of Organic Chemistry “Costin D. Nenitzescu” Romanian Academy, Spl. Independentei 202B, 060023 Bucharest, Romania
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, 9000 Ghent, Belgium
| | - Dagmar R. D’hooge
- Laboratory for Chemical Technology (LCT), Ghent University, Technologiepark 125, B-9052 Ghent, Belgium
- Centre for Textile Science and Engineering, Ghent University, Technologiepark 70A, B-9052 Ghent, Belgium
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Development of gold-core silica shell nanospheres coated with poly-2-ethyl-oxazoline and β-cyclodextrin aimed for cancer therapy. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 98:960-968. [DOI: 10.1016/j.msec.2019.01.068] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 12/17/2018] [Accepted: 01/15/2019] [Indexed: 01/07/2023]
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45
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Kerscher B, Trötschler TM, Pásztói B, Gröer S, Szabó Á, Iván B, Mülhaupt R. Thermoresponsive Polymer Ionic Liquids and Nanostructured Hydrogels Based upon Amphiphilic Polyisobutylene-b-poly(2-ethyl-2-oxazoline) Diblock Copolymers. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00296] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Benjamin Kerscher
- Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Str. 31, D-79104 Freiburg, Germany
- Freiburg Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Str. 21, D-79104 Freiburg, Germany
| | - Tobias M. Trötschler
- Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Str. 31, D-79104 Freiburg, Germany
- Freiburg Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Str. 21, D-79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, D-79110 Freiburg, Germany
| | - Balázs Pásztói
- Polymer Chemistry Research Group, Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok krt. 2, H-1117 Budapest, Hungary
- George Hevesy PhD School of Chemistry, Institute of Chemistry, Faculty of Science, Eötvös Loránd University, Pázmány Péter sétány 2, H-1117 Budapest, Hungary
| | - Saskia Gröer
- Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Str. 31, D-79104 Freiburg, Germany
- Freiburg Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Str. 21, D-79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, D-79110 Freiburg, Germany
| | - Ákos Szabó
- Polymer Chemistry Research Group, Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok krt. 2, H-1117 Budapest, Hungary
| | - Béla Iván
- Polymer Chemistry Research Group, Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok krt. 2, H-1117 Budapest, Hungary
| | - Rolf Mülhaupt
- Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Str. 31, D-79104 Freiburg, Germany
- Freiburg Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Str. 21, D-79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, D-79110 Freiburg, Germany
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Nitroimidazole derivative incorporated liposomes for hypoxia-triggered drug delivery and enhanced therapeutic efficacy in patient-derived tumor xenografts. Acta Biomater 2019; 83:334-348. [PMID: 30366135 DOI: 10.1016/j.actbio.2018.10.029] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 09/14/2018] [Accepted: 10/21/2018] [Indexed: 12/22/2022]
Abstract
Hypoxia is not merely a tumor microenvironment byproduct, but rather an active participant in tumor development, invasion, and metastasis. Hypoxia contributes to poor outcomes in tumor treatment and has currently emerged as an important therapeutic target. In this work, a facile hypoxia-responsive liposomal drug delivery system was developed by incorporating derivatized nitroimidazole into liposome membranes. Under hypoxic conditions, hypoxia-induced reductive metabolism of the nitroimidazole derivative facilitated disassembly of the liposomes for triggered drug release. The liposomes showed high sensitivity to hypoxia, even at the cellular level, and could release payload in an oxygen-dependent manner, leading to high cytotoxicity in hypoxic conditions. In vivo fluorescence imaging revealed that there was a selective release of the liposomes at the hypoxic tumor site. As a result, the liposomes exhibited enhanced therapeutic efficacy in treating a hypoxic tumor in both cell line-derived and clinically relevant patient-derived xenograft models. Thus, hypoxia-responsive liposomes are a promising drug delivery system for hypoxia targeted tumor therapy. STATEMENT OF SIGNIFICANCE: 1. A facile but smart hypoxia-responsive liposomal drug delivery system is developed by incorporating nitroimidazole derivative, one of representative hypoxia-responsive moieties, into phospholipid bilayer of the liposomes. 2. The liposomes show extremely high sensitivity to hypoxia and can selectively release payload in hypoxic cells and hypoxic tumor. 3. The liposomes show enhanced therapeutic efficacy not only in cell line-derived xenograft model but also in clinically relevant patient-derived xenograft model, indicating their promising prospect in clinical application.
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de Melo-Diogo D, Costa EC, Alves CG, Lima-Sousa R, Ferreira P, Louro RO, Correia IJ. POxylated graphene oxide nanomaterials for combination chemo-phototherapy of breast cancer cells. Eur J Pharm Biopharm 2018; 131:162-169. [DOI: 10.1016/j.ejpb.2018.08.008] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 08/03/2018] [Accepted: 08/18/2018] [Indexed: 01/08/2023]
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Han S, Sun R, Su H, Lv J, Xu H, Zhang D, Fu Y. Delivery of docetaxel using pH-sensitive liposomes based on D-α-tocopheryl poly(2-ethyl-2-oxazoline) succinate: Comparison with PEGylated liposomes. Asian J Pharm Sci 2018; 14:391-404. [PMID: 32104468 PMCID: PMC7032253 DOI: 10.1016/j.ajps.2018.07.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 05/21/2018] [Accepted: 07/25/2018] [Indexed: 12/22/2022] Open
Abstract
This study aimed to investigate the ability of the novel materials D-α-tocopheryl poly(2-ethyl-2-oxazoline) succinate (TPOS) to construct pH-sensitive liposomes. TPOS was initially synthesized and characterized by TLC, FTIR, and 1H-NMR. The buffering capacity of polyethylene glycol- distearoyl phosphatidylethanolamine (PEG-DSPE) and TPOS was determined by acid-base titration, and TPOS displayed a slower downtrend and gentler slope of titration curve than PEG-DSPE within pH 7.4–5.0. Studies on the in vitro drug release demonstrated that TPOS modified docetaxel (DOC) liposomes (TPOS-DOC-L) had a slower drug-release rate at pH 7.4 similar to PEGylated-DOC liposomes (PEG-DOC-L), whereas the release rate reached approximately 86.92% ± 1.69% at pH 6.4. In vitro cellular uptake assays by microplate reader, and flow cytometry revealed that TPOS modified coumarin 6 liposomes (TPOS-C6-L) had stronger cellular uptake at pH 6.4 than that at pH 7.4 (P < 0.01). Conversely, for PEGylated C6 liposomes (PEG-C6-L) and conventional C6 liposomes (C6-L), very similar cellular uptakes were exhibited at different pH values. Confocal laser scanning microscopy images showed that PEG-C6-L and C6-L were mainly located in lysosomes. By contrast, TPOS-C6-L showed broader cytoplasmic release and distribution at 4 h. MTT assay showed that the cytotoxicity of TPOS-DOC-L was similar to that of PEG-DOC-L and conventional DOC liposomes (DOC-L) at the same DOC concentration and at pH 7.4, but was much lower than those at pH 6.4 after 48 h of incubation. The apoptosis of PEG-DOC-L and DOC-L had no remarkable improvement with decreased pH from 7.4 to 6.4. Meanwhile, TPOS-DOC-L significantly induced the apoptosis of HeLa cells with decreased pH. Therefore, TPOS can be a biomaterial for the construction of a pH-sensitive drug delivery system.
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Affiliation(s)
- Shu Han
- Department of Pharmacy, School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China
| | - Ruiyang Sun
- Department of Pharmacy, School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China
| | - Hong Su
- Department of Pharmacy, School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China
| | - Jing Lv
- Department of Pharmacy, School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China
| | - Huan Xu
- Department of Pharmacy, School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China
| | - Di Zhang
- Department of Pharmacy, School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China
| | - Yuanshan Fu
- Department of Anatomy, College of Basic Medical Science, Dalian Medical University, Dalian 116044, China
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Qu X, Zou Y, He C, Zhou Y, Jin Y, Deng Y, Wang Z, Li X, Zhou Y, Liu Y. Improved intestinal absorption of paclitaxel by mixed micelles self-assembled from vitamin E succinate-based amphiphilic polymers and their transcellular transport mechanism and intracellular trafficking routes. Drug Deliv 2018; 25:210-225. [PMID: 29313392 PMCID: PMC6058530 DOI: 10.1080/10717544.2017.1419513] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
To ensure that antitumor drugs can be effectively transported across intestinal barrier and then quickly released in tumor cells, mixed polymeric micelles (Mix-PMs) were designed and fabricated by combining poly(2-ethyl-2-oxazoline)-vitamin E succinate (PEOz-VES) with TPGS1000 for enhancing intestinal absorption of paclitaxel. PEOz-VES exhibited an extremely low critical micelle concentration and negligible cytotoxicity. The Mix-PMs were characterized to have about 20 nm in diameter, uniform spherical morphology, high drug-loading content and sustained drug release profile with a retained pH-sensitivity. The results of the transport through Caco-2 cell monolayers and intestinal absorption revealed that Mix-PMs displayed higher transcellular transport efficiency compared with PEOz-VES micelles and Taxol®. The possible mechanism of transcellular transport for Mix-PMs was elucidated to be mainly through clathrin- and caveolae/lipid rafts-mediated transcytosis. Confocal laser scanning micrographs revealed that late endosomes, lysosomes, endoplasmic reticulum, Golgi apparatus, and mitochondria were all involved in intracellular trafficking of Mix-PMs. The proteins involved in transcytosis of Mix-PMs and finally excreted were unraveled for the first time by the analysis of proteins in the basolateral media according to the proteomics method. Consequently, the fabricated mixed polymeric micelles may have great potential in enhancing intestinal absorption and accelerating drug release in tumor cells.
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Affiliation(s)
- Xiaoyou Qu
- a Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems , School of Pharmaceutical Sciences, Peking University , Beijing , China
| | - Yang Zou
- a Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems , School of Pharmaceutical Sciences, Peking University , Beijing , China
| | - Chuyu He
- a Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems , School of Pharmaceutical Sciences, Peking University , Beijing , China
| | - Yuanhang Zhou
- a Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems , School of Pharmaceutical Sciences, Peking University , Beijing , China
| | - Yao Jin
- a Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems , School of Pharmaceutical Sciences, Peking University , Beijing , China
| | - Yunqiang Deng
- a Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems , School of Pharmaceutical Sciences, Peking University , Beijing , China
| | - Ziqi Wang
- a Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems , School of Pharmaceutical Sciences, Peking University , Beijing , China
| | - Xinru Li
- a Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems , School of Pharmaceutical Sciences, Peking University , Beijing , China
| | - Yanxia Zhou
- a Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems , School of Pharmaceutical Sciences, Peking University , Beijing , China
| | - Yan Liu
- a Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems , School of Pharmaceutical Sciences, Peking University , Beijing , China
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50
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Hirano T, Nakatani A, Kawamata Y. Selective Synthesis of Monoadduct Derivatives of Triaminopentanoic Acid Anhydride for Time-resolved Fluorescence-mediated Polymer Concentration Measurement. CHEM LETT 2018. [DOI: 10.1246/cl.180036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Takehiro Hirano
- Takeda Pharmaceutical Company Limited, 2-26-1 Muraoka-higashi, Fujisawa, Kanagawa 251-8555, Japan
| | - Atsushi Nakatani
- Takeda Pharmaceutical Company Limited, 2-26-1 Muraoka-higashi, Fujisawa, Kanagawa 251-8555, Japan
| | - Yuji Kawamata
- Takeda Pharmaceutical Company Limited, 2-26-1 Muraoka-higashi, Fujisawa, Kanagawa 251-8555, Japan
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