1
|
Coudane J, Nottelet B, Mouton J, Garric X, Van Den Berghe H. Poly(ε-caprolactone)-Based Graft Copolymers: Synthesis Methods and Applications in the Biomedical Field: A Review. Molecules 2022; 27:7339. [PMID: 36364164 PMCID: PMC9653691 DOI: 10.3390/molecules27217339] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/18/2022] [Accepted: 10/26/2022] [Indexed: 09/24/2023] Open
Abstract
Synthetic biopolymers are attractive alternatives to biobased polymers, especially because they rarely induce an immune response in a living organism. Poly ε-caprolactone (PCL) is a well-known synthetic aliphatic polyester universally used for many applications, including biomedical and environmental ones. Unlike poly lactic acid (PLA), PCL has no chiral atoms, and it is impossible to play with the stereochemistry to modify its properties. To expand the range of applications for PCL, researchers have investigated the possibility of grafting polymer chains onto the PCL backbone. As the PCL backbone is not functionalized, it must be first functionalized in order to be able to graft reactive groups onto the PCL chain. These reactive groups will then allow the grafting of new reagents and especially new polymer chains. Grafting of polymer chains is mainly carried out by "grafting from" or "grafting onto" methods. In this review we describe the main structures of the graft copolymers produced, their different synthesis methods, and their main characteristics and applications, mainly in the biomedical field.
Collapse
Affiliation(s)
- Jean Coudane
- Department of Polymers for Health and Biomaterials, Institute of Biomolecules Max Mousseron, UMR 5247, University of Montpellier, CNRS, ENSCM, 34000 Montpellier, France
| | - Benjamin Nottelet
- Department of Polymers for Health and Biomaterials, Institute of Biomolecules Max Mousseron, UMR 5247, University of Montpellier, CNRS, ENSCM, 34000 Montpellier, France
| | - Julia Mouton
- Polymers Composites and Hybrids, IMT Mines d’Alès, 30100 Alès, France
- EPF Graduate School of Engineering, 34000 Montpellier, France
| | - Xavier Garric
- Department of Polymers for Health and Biomaterials, Institute of Biomolecules Max Mousseron, UMR 5247, University of Montpellier, CNRS, ENSCM, 34000 Montpellier, France
- Department of Pharmacy, Nîmes University Hospital, 30900 Nimes, France
| | - Hélène Van Den Berghe
- Department of Polymers for Health and Biomaterials, Institute of Biomolecules Max Mousseron, UMR 5247, University of Montpellier, CNRS, ENSCM, 34000 Montpellier, France
| |
Collapse
|
2
|
Amphiphilic copolymers in biomedical applications: Synthesis routes and property control. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 123:111952. [PMID: 33812580 DOI: 10.1016/j.msec.2021.111952] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/29/2021] [Accepted: 02/02/2021] [Indexed: 12/16/2022]
Abstract
The request of new materials, matching strict requirements to be applied in precision and patient-specific medicine, is pushing for the synthesis of more and more complex block copolymers. Amphiphilic block copolymers are emerging in the biomedical field due to their great potential in terms of stimuli responsiveness, drug loading capabilities and reversible thermal gelation. Amphiphilicity guarantees self-assembly and thermoreversibility, while grafting polymers offers the possibility of combining blocks with various properties in one single material. These features make amphiphilic block copolymers excellent candidates for fine tuning drug delivery, gene therapy and for designing injectable hydrogels for tissue engineering. This manuscript revises the main techniques developed in the last decade for the synthesis of amphiphilic block copolymers for biomedical application. Strategies for fine tuning the properties of these novel materials during synthesis are discussed. A deep knowledge of the synthesis techniques and their effect on the performance and the biocompatibility of these polymers is the first step to move them from the lab to the bench. Current results predict a bright future for these materials in paving the way towards a smarter, less invasive, while more effective, medicine.
Collapse
|
3
|
Wu WX. Lipase-catalyzed synthesis and post-polymerization modification of new fully bio-based poly(hexamethylene γ-ketopimelate) and poly(hexamethylene γ-ketopimelate- co-hexamethylene adipate) copolyesters. E-POLYMERS 2020. [DOI: 10.1515/epoly-2020-0016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Abstract
A novel full bio-based ketone-containing aliphatic polyester was prepared by enzyme-catalyzed polycondensation of diethyl γ-ketopimelate (DEK) with 1,6-hexanediol (HDO) using immobilized lipase B from Candida antarctica (CALB). The influences of polymerization conditions such as temperature, time, enzyme amount, and solvent amount on the molecular weight of poly(hexamethylene γ-ketopimelate) (PHK) were investigated. New fully bio-based poly(hexamethylene γ-ketopimelate-co-hexamethylene adipate) (poly(HK-co-HA)) copolymers with narrow polydispersity and well-defined composition were synthesized by copolymerization of DEK, HDO, and diethyl adipate. The structures of PHK and poly(HK-co-HA) copolymers were characterized by nuclear magnetic resonance, and their thermal characterization was examined by thermogravimetric analysis and differential scanning calorimetry. The degradation of PHK and poly(HK-co-HA) copolymers was studied. The post-polymerization modification of these polyketoesters via oxime click chemistry was further demonstrated.
Collapse
Affiliation(s)
- Wan-Xia Wu
- College of Pharmacy and Biological Engineering , Chengdu University , Chengdu 610106 , China
| |
Collapse
|
4
|
Atanasova P, Atanasov V, Wittum L, Southan A, Choi E, Wege C, Kerres J, Eiben S, Bill J. Hydrophobization of Tobacco Mosaic Virus to Control the Mineralization of Organic Templates. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E800. [PMID: 31137720 PMCID: PMC6567237 DOI: 10.3390/nano9050800] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 05/20/2019] [Accepted: 05/20/2019] [Indexed: 12/28/2022]
Abstract
The robust, anisotropic tobacco mosaic virus (TMV) provides a monodisperse particle size and defined surface chemistry. Owing to these properties, it became an excellent bio-template for the synthesis of diverse nanostructured organic/inorganic functional materials. For selective mineralization of the bio-template, specific functional groups were introduced by means of different genetically encoded amino acids or peptide sequences into the polar virus surface. An alternative approach for TMV surface functionalization is chemical coupling of organic molecules. To achieve mineralization control in this work, we developed a synthetic strategy to manipulate the surface hydrophilicity of the virus through covalent coupling of polymer molecules. Three different types of polymers, namely the perfluorinated (poly(pentafluorostyrene) (PFS)), the thermo-responsive poly(propylene glycol) acrylate (PPGA), and the block-copolymer polyethylene-block-poly(ethylene glycol) were examined. We have demonstrated that covalent attachment of hydrophobic polymer molecules with proper features retains the integrity of the virus structure. In addition, it was found that the degree of the virus hydrophobicity, examined via a ZnS mineralization test, could be tuned by the polymer properties.
Collapse
Affiliation(s)
- Petia Atanasova
- Institute for Materials Science, University of Stuttgart, Heisenbergstr. 3, 70569 Stuttgart, Germany.
| | - Vladimir Atanasov
- Institute of Chemical Process Engineering, University of Stuttgart, Böblinger Straße 78, 70199 Stuttgart, Germany.
| | - Lisa Wittum
- Institute of Biomaterials and Biological Systems, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany.
| | - Alexander Southan
- Institute of Interfacial Process Engineering and Plasma Technology, University of Stuttgart, Pfaffenwaldring 31, 70569 Stuttgart, Germany.
| | - Eunjin Choi
- Institute for Materials Science, University of Stuttgart, Heisenbergstr. 3, 70569 Stuttgart, Germany.
| | - Christina Wege
- Institute of Biomaterials and Biological Systems, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany.
| | - Jochen Kerres
- Institute of Chemical Process Engineering, University of Stuttgart, Böblinger Straße 78, 70199 Stuttgart, Germany.
| | - Sabine Eiben
- Institute of Biomaterials and Biological Systems, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany.
| | - Joachim Bill
- Institute for Materials Science, University of Stuttgart, Heisenbergstr. 3, 70569 Stuttgart, Germany.
| |
Collapse
|
5
|
Kendrick-Williams LL, Harth E. Second-Generation Nanosponges: Nanonetworks in Controlled Dimensions via Backbone Ketoxime and Alkoxyamine Cross-Links for Controlled Release. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b02244] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Laken L. Kendrick-Williams
- Department of Chemistry, Center of Excellence in Polymer Chemistry (CEPC), University of Houston, 3585 Cullen Blvd., Houston, Texas 77030, United States
- Department of Chemistry, Vanderbilt University, 7665 Stevenson Center, Nashville, Tennessee 37235, United States
| | - Eva Harth
- Department of Chemistry, Center of Excellence in Polymer Chemistry (CEPC), University of Houston, 3585 Cullen Blvd., Houston, Texas 77030, United States
| |
Collapse
|
6
|
Hydrolytically degradable poly(ethylene glycol) based polycarbonates by organocatalyzed condensation. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.06.046] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
7
|
Collins J, Xiao Z, Connal LA. Tunable degradation of polyethylene glycol-like polymers based on imine and oxime bonds. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28856] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Joe Collins
- School of Chemical Engineering; University of Melbourne; Parkville, Melbourne Victoria 3010 Australia
| | - Zeyun Xiao
- School of Chemical Engineering; University of Melbourne; Parkville, Melbourne Victoria 3010 Australia
| | - Luke A. Connal
- School of Chemical Engineering; University of Melbourne; Parkville, Melbourne Victoria 3010 Australia
- Research School of Chemistry; Australian National University; Canberra Australian Capital Territory 2601 Australia
| |
Collapse
|
8
|
Ghosh S, Cabral JD, Hanton LR, Moratti SC. Strong poly(ethylene oxide) based gel adhesives via oxime cross-linking. Acta Biomater 2016; 29:206-214. [PMID: 26476342 DOI: 10.1016/j.actbio.2015.10.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 09/28/2015] [Accepted: 10/13/2015] [Indexed: 01/08/2023]
Abstract
There is a demand for materials to replace or augment the use of sutures and staples in surgical procedures. Currently available commercial surgical adhesives provide either high bond strength with biological toxicity or polymer and protein-based products that are biologically acceptable (though with potential sensitizing potential) but have much reduced bond strength. It is desirable to provide novel biocompatible and biodegradable surgical adhesives/sealants capable of high strength with minimal immune or inflammatory response. In this work, we report the end group derivatization of 8-arm star PEOs with aldehyde and amine end groups. Gels were prepared employing the Schiff-base chemistry between the aldehydes and the amines. Gel setting times, swelling behavior and rheological characterization were carried out for these gels. The mechanical-viscoelastic properties were found to be directly proportional to the crosslinking density of the gels, the 10K PEO gel was stiffer in comparison to the 20K PEO gel. The adhesive properties of these gels were tested using porcine skin and showed excellent adhesion properties. Cytotoxicity studies were carried out for the individual gel components using two different methods: (a) Crystal Violet Staining assay (CVS assay) and (b) impedance and cell index measurement by the xCELLigence system at concentrations >5%. Gels prepared by mixing 20% w/w solutions were also tested for cytotoxicity. The results revealed that the individual gel components as well as the prepared gels and their leachables were non-cytotoxic at these concentrations. STATEMENT OF SIGNIFICANCE This work presents a new type of glue that is aimed at surgery applications using a water soluble star shaped polymer. It show excellent adhesion to skin and is tough and easy to use. We show that it is very biocompatible based on tests on live human cells, and could therefore in principle be used for internal surgery. Comparison with other reported and commercial glues shows that it is stronger than most, and does not swell in water to the same degree as many other water based bioadhesives.
Collapse
|
9
|
Qi Y, Chilkoti A. Protein-polymer conjugation-moving beyond PEGylation. Curr Opin Chem Biol 2015; 28:181-93. [PMID: 26356631 DOI: 10.1016/j.cbpa.2015.08.009] [Citation(s) in RCA: 134] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 08/05/2015] [Accepted: 08/18/2015] [Indexed: 01/09/2023]
Abstract
In this review, we summarize-from a materials science perspective-the current state of the field of polymer conjugates of peptide and protein drugs, with a focus on polymers that have been developed as alternatives to the current gold standard, poly(ethylene glycol) (PEG). PEGylation, or the covalent conjugation of PEG to biological therapeutics to improve their therapeutic efficacy by increasing their circulation half-lives and stability, has been the gold standard in the pharmaceutical industry for several decades. After years of research and development, the limitations of PEG, specifically its non-degradability and immunogenicity have become increasingly apparent. While PEG is still currently the best polymer available with the longest clinical track record, extensive research is underway to develop alternative materials in an effort to address these limitations of PEG. Many of these alternative materials have shown promise, though most of them are still in an early stage of development and their in vivo distribution, mechanism of degradation, route of elimination and immunogenicity have not been investigated to a similar extent as for PEG. Thus, further in-depth in vivo testing is essential to validate whether any of the alternative materials discussed in this review qualify as a replacement for PEG.
Collapse
Affiliation(s)
- Yizhi Qi
- Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA
| | - Ashutosh Chilkoti
- Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA; Center for Biologically Inspired Materials and Materials Systems, Duke University, Durham, NC 27708, USA.
| |
Collapse
|
10
|
Nicolau SE, Davis LL, Duncan CC, Olsen TR, Alexis F, Whitehead DC, Van Horn BA. Oxime functionalization strategy for iodinated poly(epsilon-caprolactone) X-ray opaque materials. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27706] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Samantha E. Nicolau
- Department of Chemistry and Biochemistry; College of Charleston; 66 George St. Charleston South Carolina 29424
| | - Lundy L. Davis
- Department of Chemistry and Biochemistry; College of Charleston; 66 George St. Charleston South Carolina 29424
| | - Caroline C. Duncan
- Department of Chemistry and Biochemistry; College of Charleston; 66 George St. Charleston South Carolina 29424
| | - Timothy R. Olsen
- Department of Bioengineering; Clemson University; 203 Rhodes Research Center Annex Clemson South Carolina 29634
| | - Frank Alexis
- Department of Bioengineering; Clemson University; 203 Rhodes Research Center Annex Clemson South Carolina 29634
- Institute of Biological Interfaces of Engineering; Department of Bioengineering; Clemson University; Clemson South Carolina 29634-0905
| | - Daniel C. Whitehead
- Department of Chemistry; Clemson University; 467 Hunter Laboratories Clemson South Carolina 29634
| | - Brooke A. Van Horn
- Department of Chemistry and Biochemistry; College of Charleston; 66 George St. Charleston South Carolina 29424
| |
Collapse
|
11
|
Allaoua I, Goi BE, Obadia MM, Debuigne A, Detrembleur C, Drockenmuller E. (Co)Polymerization of vinyl levulinate by cobalt-mediated radical polymerization and functionalization by ketoxime click chemistry. Polym Chem 2014. [DOI: 10.1039/c3py01505j] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
(Co)polymerization of vinyl levulinate (with vinyl acetate) by cobalt-mediated radical polymerization affords well-defined poly(vinyl ester)s. Pendant ketone functionalities are conjugated by ketoxime click chemistry.
Collapse
Affiliation(s)
- Imène Allaoua
- Université de Lyon 1
- Ingénierie des Matériaux Polymères (IMP, UMR CNRS 5223)
- 69622 Villeurbanne Cedex
- France
| | - Beatriz Eleuterio Goi
- Centre for Education and Research on Macromolecules (CERM)
- Department of Chemistry
- University of Liege (ULg)
- B-4000 Liège
- Belgium
| | - Mona M. Obadia
- Université de Lyon 1
- Ingénierie des Matériaux Polymères (IMP, UMR CNRS 5223)
- 69622 Villeurbanne Cedex
- France
| | - Antoine Debuigne
- Centre for Education and Research on Macromolecules (CERM)
- Department of Chemistry
- University of Liege (ULg)
- B-4000 Liège
- Belgium
| | - Christophe Detrembleur
- Centre for Education and Research on Macromolecules (CERM)
- Department of Chemistry
- University of Liege (ULg)
- B-4000 Liège
- Belgium
| | - Eric Drockenmuller
- Université de Lyon 1
- Ingénierie des Matériaux Polymères (IMP, UMR CNRS 5223)
- 69622 Villeurbanne Cedex
- France
- Institut Universitaire de France (IUF)
| |
Collapse
|
12
|
Yang X, Cui C, Tong Z, Sabanayagam CR, Jia X. Poly(ε-caprolactone)-based copolymers bearing pendant cyclic ketals and reactive acrylates for the fabrication of photocrosslinked elastomers. Acta Biomater 2013; 9:8232-44. [PMID: 23770222 PMCID: PMC3732508 DOI: 10.1016/j.actbio.2013.06.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2013] [Revised: 04/25/2013] [Accepted: 06/03/2013] [Indexed: 11/27/2022]
Abstract
Block copolymers of poly(ethylene glycol) and poly(ε-caprolactone) (PCL) with chemically addressable functional groups were synthesized and characterized. Ring-opening polymerization of ε-caprolactone (CL) and 1,4,8-trioxaspiro-[4,6]-9-undecanone (TSU) using α-methoxy, ω-hydroxyl poly(ethylene glycol) as the initiator afforded a copolymer with cyclic ketals being randomly distributed in the hydrophobic PCL block. At an initiator/catalyst molar ratio of 10/1 and a TSU/CL weight ratio of 1/4, a ketal-carrying copolymer (ECT2-CK) with Mn of 52 kDa and a ketal content of 15 mol.% was obtained. Quantitative side-chain deacetalization revealed the reactive ketones without noticeable polymer degradation. In our study, 10 mol.% of cyclic ketals were deprotected and the ketone-containing copolymer was designated as ECT2-CO. Reaction of ECT2-CO with 2-(2-(aminooxy)acetoxy)-ethyl acrylate gave rise to an acrylated product (ECT2-AC) containing an estimated 3-5 acrylate groups per chain. UV-initiated radical polymerization of ECT2-AC in dichloromethane resulted in a crosslinked network (xECT2-AC). Thermal and morphological analyses employing differential scanning calorimetry and atomic force microscopy operated in PeakForce Tapping mode revealed the semicrystalline nature of the network, which contained stiff crystalline lamellae dispersed in a softer amorphous interstitial. Macroscopic and nanoscale mechanical characterizations showed that ECT2-CK exhibited a significantly lower modulus than PCL of a similar molecular weight. Whereas ECT2-CK undergoes a plastic deformation with a distinct yield point and a cold-drawing region, xECT2-AC exhibits a compliant, elastomeric deformation with a Young's modulus of 0.5±0.1 MPa at 37°C. When properly processed, the crosslinked network exhibited shape-memory behaviors, with shape fixity and shape recovery values close to 1 and a shape recovery time of less than 4s at 37°C. In vitro studies showed that xECT2-AC films did not induce any cytotoxic effects on the cultured mesenchymal stem cells. The crosslinkable polyester copolymers can be potentially used as tissue engineering scaffolds and minimally invasive medical devices.
Collapse
Affiliation(s)
- Xiaowei Yang
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA
| | - Chengzhong Cui
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA
| | - Zhixiang Tong
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA
| | | | - Xinqiao Jia
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA
- Delaware Biotechnology Institute, University of Delaware, Newark, DE 19711, USA
- Biomedical Engineering Program, University of Delaware, Newark, DE 19716, USA
| |
Collapse
|
13
|
Ma G, Li D, Wang J, Zhang X, Tang H. Methoxy-Poly(ethylene glycol)-block-Poly(ε-caprolactone) Bearing Pendant Aldehyde Groups as pH-Responsive Drug Delivery Carrier. Aust J Chem 2013. [DOI: 10.1071/ch13297] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A biodegradable amphiphilic block copolymer of methoxy poly(ethylene glycol)-block-poly(ϵ-caprolactone) bearing pendant aldehyde groups was synthesised by a combination of ring-opening polymerisation and thio-bromo ‘click’ chemistry. The free aldehyde groups on the copolymer were reacted with hydrophobic payloads (p-methoxylaniline as a model drug) by a benzoic–imine linker, which was responsive to pH change. NMR, FTIR, and gel permeation chromatography analysis confirmed the copolymer structures. In vitro release studies revealed that under acid stimulus, hydrolysis of the benzoic–imine bond resulted in a rapid drug release. This new amphiphilic block copolymer is expected to have promising applications in biodegradable controlled drug delivery systems.
Collapse
|
14
|
Lundberg P, Lee BF, van den Berg SA, Pressly ED, Lee A, Hawker CJ, Lynd NA. Poly[(ethylene oxide)-co-(methylene ethylene oxide)]: A hydrolytically-degradable poly(ethylene oxide) platform. ACS Macro Lett 2012; 1:1240-1243. [PMID: 23205320 PMCID: PMC3509790 DOI: 10.1021/mz300477t] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A facile method for imparting hydrolytic degradability to poly(ethylene oxide) (PEO), compatible with current PEGylation strategies, is presented. By incorporating methylene ethylene oxide (MEO) units into the parent PEO backbone, complete degradation was defined by the molar incorporation of MEO, and the structure of the degradation byproducts was consistent with an acid-catalyzed vinyl-ether hydrolysis mechanism. The hydrolytic degradation of poly[(ethylene oxide)-co-(methylene ethylene oxide)] was pH-sensitive, with degradation at pH 5 being significantly faster than at pH 7.4 at 37 °C in PBS buffer while long-term stability could be obtained in either the solid-state or at pH 7.4 at 6 °C.
Collapse
Affiliation(s)
- Pontus Lundberg
- Materials Research Laboratory, University of California, Santa Barbara, CA 93106
| | - Bongjae F. Lee
- Materials Research Laboratory, University of California, Santa Barbara, CA 93106
- Materials Department, University of California, Santa Barbara, CA 93106
- Chemical Research Institute, Samsung Cheil Industries Inc., Republic of Korea
| | | | - Eric D. Pressly
- Materials Research Laboratory, University of California, Santa Barbara, CA 93106
| | - Annabelle Lee
- Materials Research Laboratory, University of California, Santa Barbara, CA 93106
| | - Craig J. Hawker
- Materials Research Laboratory, University of California, Santa Barbara, CA 93106
- Materials Department, University of California, Santa Barbara, CA 93106
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA 93106
| | - Nathaniel A. Lynd
- Materials Research Laboratory, University of California, Santa Barbara, CA 93106
| |
Collapse
|
15
|
Freichels H, Alaimo D, Auzély-Velty R, Jérôme C. α-Acetal, ω-Alkyne Poly(ethylene oxide) as a Versatile Building Block for the Synthesis of Glycoconjugated Graft-Copolymers Suited for Targeted Drug Delivery. Bioconjug Chem 2012; 23:1740-52. [DOI: 10.1021/bc200650n] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hélène Freichels
- Center for Education and Research
on Macromolcules, University of Liège, B6a Sart-Tilman, 4000 Liège, Belgium
| | - David Alaimo
- Center for Education and Research
on Macromolcules, University of Liège, B6a Sart-Tilman, 4000 Liège, Belgium
| | - Rachel Auzély-Velty
- Centre de Recherches sur les
Macromolécules Végétales (CERMAV-CNRS), BP53, 38041 Grenoble cedex 9, France (affiliated with Université
Joseph Fourier, and member of the Institut de Chimie Moléculaire
de Grenoble)
| | - Christine Jérôme
- Center for Education and Research
on Macromolcules, University of Liège, B6a Sart-Tilman, 4000 Liège, Belgium
| |
Collapse
|
16
|
Chen W, Shi Y, Feng H, Du M, Zhang JZ, Hu J, Yang D. Preparation of copolymer paclitaxel covalently linked via a disulfide bond and its application on controlled drug delivery. J Phys Chem B 2012; 116:9231-7. [PMID: 22774761 DOI: 10.1021/jp303260f] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A novel controlled drug delivery system based on copolymer covalently linked paclitaxel via a disulfide bond was constructed. Copolymer with poly(ethylene glycol) (PEG) side chains and carboxyl groups on the backbone was prepared by radical copolymerization of tert-butyl acrylate and poly(ethylene glycol) methyl ether acrylate, followed by selectively hydrolyzing tert-butyl groups to carboxyl groups. Utilizing the carboxyl group as an active reaction site, paclitaxel, a well-known chemotherapeutic drug, could be covalently linked to the backbone of a copolymer via a disulfide bond, and the loading content of paclitaxel could reach up to 32 wt %. In aqueous solution, this drug-loaded copolymer could self-assemble into a spherical micelle, with the hydrophobic drug as the core and hydrophilic PEG as the shell. The mean diameter of the micelles evaluated by transmission electron microscopy (TEM) and dynamic light scattering (DLS) was approximately 60 nm. The in vitro cytotoxicity experiments showed that the copolymer was biocompatible and suitable to use as a drug carrier. After covalently loading the drug, the copolymer showed apparent cytotoxicity to OS-RC-2 cells (kidney tumor cells) and low cytotoxicity to macrophage cells (human normal cells), indicating that the disulfide bond was stable in human normal cells, but would be broken in tumor cells. This selective bond scission behavior is potentially favorable for reducing the toxic and side effects of chemotherapeutic drugs.
Collapse
Affiliation(s)
- Wulian Chen
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, P. R. China
| | | | | | | | | | | | | |
Collapse
|
17
|
Taşkin E, Hazer B, Beşirli N, Çavuş G. Synthesis of Some Novel Blends of Polylactide with Polylactide-b-Poly (ethylene glycol) Block Copolymers. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2012. [DOI: 10.1080/10601325.2012.642222] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
18
|
Williams RJ, O'Reilly RK, Dove AP. Degradable graft copolymers by ring-opening and reverse addition–fragmentation chain transfer polymerization. Polym Chem 2012. [DOI: 10.1039/c2py20213a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
19
|
Cheng R, Wang X, Chen W, Meng F, Deng C, Liu H, Zhong Z. Biodegradable poly(ε-caprolactone)-g-poly(2-hydroxyethyl methacrylate) graft copolymer micelles as superior nano-carriers for “smart” doxorubicin release. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm30700f] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
20
|
Poly(ester amide)-Poly(ethylene oxide) Graft Copolymers: Towards Micellar Drug Delivery Vehicles. INT J POLYM SCI 2012. [DOI: 10.1155/2012/564348] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Micelles formed from amphiphilic copolymers are promising materials for the delivery of drug molecules, potentially leading to enhanced biological properties and efficacy. In this work, new poly(ester amide)-poly(ethylene oxide) (PEA-PEO) graft copolymers were synthesized and their assembly into micelles in aqueous solution was investigated. It was possible to tune the sizes of the micelles by varying the PEO content of the polymers and the method of micelle preparation. Under optimized conditions, it was possible to obtain micelles with diameters less than 100 nm as measured by dynamic light scattering and transmission electron microscopy. These micelles were demonstrated to encapsulate and release a model drug, Nile Red, and were nontoxic to HeLa cells as measured by an MTT assay. Overall, the properties of these micelles suggest that they are promising new materials for drug delivery systems.
Collapse
|
21
|
Nyström AM, Wooley KL. The importance of chemistry in creating well-defined nanoscopic embedded therapeutics: devices capable of the dual functions of imaging and therapy. Acc Chem Res 2011; 44:969-78. [PMID: 21675721 PMCID: PMC3196832 DOI: 10.1021/ar200097k] [Citation(s) in RCA: 105] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2011] [Indexed: 12/11/2022]
Abstract
Nanomedicine is a rapidly evolving field, for which polymer building blocks are proving useful for the construction of sophisticated devices that provide enhanced diagnostic imaging and treatment of disease, known as theranostics. These well-defined nanoscopic objects have high loading capacities, can protect embedded therapeutic cargo, and offer control over the conditions and rates of release. Theranostics also offer external surface area for the conjugation of ligands to impart stealth characteristics and/or direct their interactions with biological receptors and provide a framework for conjugation of imaging agents to track delivery to diseased site(s). The nanoscopic dimensions allow for extensive biological circulation. The incorporation of such multiple functions is complicated, requiring exquisite chemical control during production and rigorous characterization studies to confirm the compositions, structures, properties, and performance. We are particularly interested in the study of nanoscopic objects designed for treatment of lung infections and acute lung injury, urinary tract infections, and cancer. This Account highlights our work over several years to tune the assembly of unique nanostructures. We provide examples of how the composition, structure, dimensions, and morphology of theranostic devices can tune their performance as drug delivery agents for the treatment of infectious diseases and cancer. The evolution of nanostructured materials from relatively simple overall shapes and internal morphologies to those of increasing complexity is driving the development of synthetic methodologies for the preparation of increasingly complex nanomedicine devices. Our nanomedicine devices are derived from macromolecules that have well-defined compositions, structures, and topologies, which provide a framework for their programmed assembly into nanostructures with controlled sizes, shapes, and morphologies. The inclusion of functional units within selective compartments/domains allows us to create (multi)functional materials. We employ combinations of controlled radical and ring-opening polymerizations, chemical transformations, and supramolecular assembly to construct such materials as functional entities. The use of multifunctional monomers with selective polymerization chemistries affords regiochemically functionalized polymers. Further supramolecular assembly processes in water with further chemical transformations provide discrete nanoscopic objects within aqueous solutions. This approach echoes processes in nature, whereby small molecules (amino acids, nucleic acids, saccharides) are linked into polymers (proteins, DNA/RNA, polysaccharides, respectively) and then those polymers fold into three-dimensional conformations that can lead to nanoscopic functional entities.
Collapse
Affiliation(s)
- Andreas M. Nyström
- The Swedish Medical Nanoscience Center, Department of Neuroscience, Karolinska Institutet, SE-17177 Stockholm, Sweden
| | - Karen L. Wooley
- Department of Chemistry, Department of Chemical Engineering, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842-3012, United States
| |
Collapse
|
22
|
Wu Z, Zeng X, Zhang Y, Feliu N, Lundberg P, Fadeel B, Malkoch M, Nyström AM. Linear-dendritic polymeric amphiphiles as carriers of doxorubicin-In vitro evaluation of biocompatibility and drug delivery. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.25008] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
23
|
Yu Y, Zou J, Yu L, Ji W, Li Y, Law WC, Cheng C. Functional Polylactide-g-Paclitaxel–Poly(ethylene glycol) by Azide–Alkyne Click Chemistry. Macromolecules 2011. [DOI: 10.1021/ma2005102] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Yun Yu
- Department of Chemical and Biological Engineering, and ‡Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Jiong Zou
- Department of Chemical and Biological Engineering, and ‡Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Lu Yu
- Department of Chemical and Biological Engineering, and ‡Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Wei Ji
- Department of Chemical and Biological Engineering, and ‡Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Yukun Li
- Department of Chemical and Biological Engineering, and ‡Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Wing-Cheung Law
- Department of Chemical and Biological Engineering, and ‡Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Chong Cheng
- Department of Chemical and Biological Engineering, and ‡Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| |
Collapse
|
24
|
Versatile functionalization of polyester hydrogels with electroactive aniline oligomers. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.24643] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
25
|
Hao J, Servello J, Sista P, Biewer MC, Stefan MC. Temperature-sensitive aliphatic polyesters: synthesis and characterization of γ-substituted caprolactone monomers and polymers. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm11288k] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|