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Prakash P, Lee WH, Loo CY, Wong HSJ, Parumasivam T. Advances in Polyhydroxyalkanoate Nanocarriers for Effective Drug Delivery: An Overview and Challenges. NANOMATERIALS 2022; 12:nano12010175. [PMID: 35010124 PMCID: PMC8746483 DOI: 10.3390/nano12010175] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/06/2021] [Accepted: 12/07/2021] [Indexed: 01/10/2023]
Abstract
Polyhydroxyalkanoates (PHAs) are natural polymers produced under specific conditions by certain organisms, primarily bacteria, as a source of energy. These up-and-coming bioplastics are an undeniable asset in enhancing the effectiveness of drug delivery systems, which demand characteristics like non-immunogenicity, a sustained and controlled drug release, targeted delivery, as well as a high drug loading capacity. Given their biocompatibility, biodegradability, modifiability, and compatibility with hydrophobic drugs, PHAs often provide a superior alternative to free drug therapy or treatments using other polymeric nanocarriers. The many formulation methods of existing PHA nanocarriers, such as emulsion solvent evaporation, nanoprecipitation, dialysis, and in situ polymerization, are explained in this review. Due to their flexibility that allows for a vessel tailormade to its intended application, PHA nanocarriers have found their place in diverse therapy options like anticancer and anti-infective treatments, which are among the applications of PHA nanocarriers discussed in this article. Despite their many positive attributes, the advancement of PHA nanocarriers to clinical trials of drug delivery applications has been stunted due to the polymers’ natural hydrophobicity, controversial production materials, and high production costs, among others. These challenges are explored in this review, alongside their existing solutions and alternatives.
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Affiliation(s)
- Priyanka Prakash
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, Minden 11800, Penang, Malaysia;
| | - Wing-Hin Lee
- Faculty of Pharmacy and Health Sciences, Royal College of Medicine Perak, Universiti Kuala Lumpur (RCMP UniKL), Ipoh 30450, Perak, Malaysia; (W.-H.L.); (C.-Y.L.)
| | - Ching-Yee Loo
- Faculty of Pharmacy and Health Sciences, Royal College of Medicine Perak, Universiti Kuala Lumpur (RCMP UniKL), Ipoh 30450, Perak, Malaysia; (W.-H.L.); (C.-Y.L.)
| | - Hau Seung Jeremy Wong
- School of Biological Sciences, Universiti Sains Malaysia, Minden 11800, Penang, Malaysia;
| | - Thaigarajan Parumasivam
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, Minden 11800, Penang, Malaysia;
- Correspondence: ; Tel.: +60-4-6577888
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Adamus G, Domiński A, Kowalczuk M, Kurcok P, Radecka I. From Anionic Ring-Opening Polymerization of β-Butyrolactone to Biodegradable Poly(hydroxyalkanoate)s: Our Contributions in This Field. Polymers (Basel) 2021; 13:4365. [PMID: 34960919 PMCID: PMC8707542 DOI: 10.3390/polym13244365] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/10/2021] [Accepted: 12/10/2021] [Indexed: 11/18/2022] Open
Abstract
The feasibility of synthesis of functionalized poly(3-hydroxybutanoic acid) analogue and its copolymers via ring-opening polymerization of β-butyrolactone mediated by activated anionic initiators is presented. Using these new synthetic approaches, polyesters with a defined chemical structure of the end groups, as well as block, graft, and random copolymers, have been obtained and characterized by modern instrumental techniques, with special emphasis on ESI-MS. The relationship between the structure and properties of the prepared polymeric materials is also discussed.
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Affiliation(s)
- Grażyna Adamus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Sklodowskiej Str., 41-800 Zabrze, Poland; (G.A.); (A.D.)
| | - Adrian Domiński
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Sklodowskiej Str., 41-800 Zabrze, Poland; (G.A.); (A.D.)
| | - Marek Kowalczuk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Sklodowskiej Str., 41-800 Zabrze, Poland; (G.A.); (A.D.)
- Wolverhampton School of Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK;
| | - Piotr Kurcok
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Sklodowskiej Str., 41-800 Zabrze, Poland; (G.A.); (A.D.)
| | - Iza Radecka
- Wolverhampton School of Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK;
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Parsian M, Mutlu P, Yalcin S, Gunduz U. Characterization of Gemcitabine Loaded Polyhydroxybutyrate Coated Magnetic Nanoparticles for Targeted Drug Delivery. Anticancer Agents Med Chem 2021; 20:1233-1240. [PMID: 32156242 DOI: 10.2174/1871520620666200310091026] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 01/29/2020] [Accepted: 01/29/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND Targeted drug delivery is one of the recent hot topics in cancer therapy. Because of having a targeting potential under the magnetic field and a suitable surface for the attachment of different therapeutic moieties, magnetic nanoparticles are widely studied for their applications in medicine. OBJECTIVE Gemcitabine loaded polyhydroxybutyrate coated magnetic nanoparticles (Gem-PHB-MNPs) were synthesized and characterized for the treatment of breast cancer by the targeted drug delivery method. METHODS The characterization of nanoparticles was confirmed by FTIR, XPS, TEM, and spectrophotometric analyses. The cytotoxicities of drug-free nanoparticles and Gemcitabine loaded nanoparticles were determined with cell proliferation assay using SKBR-3 and MCF-7 breast cancer cell lines. RESULTS The release of Gemcitabine from PHB-MNPs indicated a pH-dependent pattern, which is a desirable release characteristic, since the pH of the tumor microenvironment and endosomal structures are acidic, while bloodstream and healthy-tissues are neutral. Drug-free PHB-MNPs were not cytotoxic to the SKBR-3 and MCF- 7 cells, whereas the Gemcitabine loaded PHB-MNPs was about two-fold as cytotoxic with respect to free Gemcitabine. In vitro targeting ability of PHB-MNPs was shown under the magnetic field. CONCLUSION Considering these facts, we may suggest that these nanoparticles can be a promising candidate for the development of a novel targeted drug delivery system for breast cancer.
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Affiliation(s)
- Maryam Parsian
- Department of Biotechnology, Middle East Technical University, Ankara, Turkey
| | - Pelin Mutlu
- Central Laboratory, Molecular Biology and Biotechnology R&D, Middle East Technical University, Ankara, Turkey
| | - Serap Yalcin
- Department of Molecular Biology and Genetics, Ahi Evran University, Kirsehir, Turkey
| | - Ufuk Gunduz
- Department of Biotechnology, Middle East Technical University, Ankara, Turkey
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Anionic Polymerization of β-Butyrolactone Initiated with Sodium Phenoxides. The Effect of the Initiator Basicity/Nucleophilicity on the ROP Mechanism. Polymers (Basel) 2019; 11:polym11071221. [PMID: 31336650 PMCID: PMC6680796 DOI: 10.3390/polym11071221] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 07/16/2019] [Accepted: 07/20/2019] [Indexed: 11/23/2022] Open
Abstract
It was shown that selected sodium phenoxide derivatives with different basicity and nucleophilicity, such as sodium p-nitrophenoxide, p-chlorophenoxide, 1-napthoxide, phenoxide and p-methoxyphenoxide, are effective initiators in anionic ring-opening polymerization (AROP) of β-butyrolactone in mild conditions. It was found that phenoxides as initiators in anionic ring-opening polymerization of β-butyrolactone behave as strong nucleophiles, or weak nucleophiles, as well as Brønsted bases. The resulting polyesters possessing hydroxy, phenoxy and crotonate initial groups are formed respectively by the attack of phenoxide anion at (i) C2 followed by an elimination reaction with hydroxide formation, (ii) C4 and (iii) abstraction of acidic proton at C3. The obtained poly(3-hydroxybutyrate) possesses carboxylate growing species. The ratio of the observed initial groups strongly depends on the basicity and nucleophilicity of the sodium phenoxide derivative used as initiator. The proposed mechanism of this polymerization describes the reactions leading to formation of observed end groups. Moreover, the possibility of formation of a crotonate group during the propagation step of this polymerization is also discussed.
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Ghosh S, Spannenberg A, Mejía E. Cubane-Type Polynuclear Zinc Complexes Containing Tridentate Schiff
Base Ligands: Synthesis, Characterization, and Ring-Opening Polymerization Studies of rac
-Lactide and ε
-Caprolactone. Helv Chim Acta 2017. [DOI: 10.1002/hlca.201700176] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Swarup Ghosh
- Leibniz Institute for Catalysis; University of Rostock; Albert-Einstein-Str. 29a 18059 Rostock Germany
| | - Anke Spannenberg
- Leibniz Institute for Catalysis; University of Rostock; Albert-Einstein-Str. 29a 18059 Rostock Germany
| | - Esteban Mejía
- Leibniz Institute for Catalysis; University of Rostock; Albert-Einstein-Str. 29a 18059 Rostock Germany
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Aminophenolates of aluminium, gallium and zinc: Synthesis, characterization and polymerization activity. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3748] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Kwiecień M, Kwiecień I, Radecka I, Kannappan V, Morris MR, Adamus G. Biocompatible terpolyesters containing polyhydroxyalkanoate and sebacic acid structural segments – synthesis and characterization. RSC Adv 2017. [DOI: 10.1039/c6ra27980e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
A convenient synthetic route of poly(3HB-co-3HH-co-SEB) terpolyesters has been reported.
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Affiliation(s)
- Michał Kwiecień
- Centre of Polymer and Carbon Materials
- Polish Academy of Sciences
- Zabrze 41-800
- Poland
| | - Iwona Kwiecień
- Centre of Polymer and Carbon Materials
- Polish Academy of Sciences
- Zabrze 41-800
- Poland
| | - Iza Radecka
- School of Biology, Chemistry and Forensic Science
- Faculty of Science and Engineering
- University of Wolverhampton
- Wolverhampton WV1 1LY
- UK
| | - Vinodh Kannappan
- School of Biology, Chemistry and Forensic Science
- Faculty of Science and Engineering
- University of Wolverhampton
- Wolverhampton WV1 1LY
- UK
| | - Mark R. Morris
- School of Biology, Chemistry and Forensic Science
- Faculty of Science and Engineering
- University of Wolverhampton
- Wolverhampton WV1 1LY
- UK
| | - Grażyna Adamus
- Centre of Polymer and Carbon Materials
- Polish Academy of Sciences
- Zabrze 41-800
- Poland
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Michalak M, Kurcok P, Hakkarainen M. Polyhydroxyalkanoate-based drug delivery systems. POLYM INT 2016. [DOI: 10.1002/pi.5282] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Michał Michalak
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; M Curie-Skłodowskiej 34 41-819 Zabrze Poland
| | - Piotr Kurcok
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; M Curie-Skłodowskiej 34 41-819 Zabrze Poland
| | - Minna Hakkarainen
- Department of Fibre and Polymer Technology; KTH Royal Institute of Technology; Stockholm Sweden
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Domagala A, Domagala W, Ledwon P, Musiol M, Janeczek H, Stolarczyk A, Kurcok P, Adamus G, Lapkowski M. N-Oligo(3-hydroxybutyrate)-functionalized polypyrroles: towards bio-erodible conducting copolymers. POLYM INT 2016. [DOI: 10.1002/pi.5190] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Anna Domagala
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; 34 M. Curie-Skłodowskiej Street 41-819 Zabrze Poland
| | - Wojciech Domagala
- Department of Physical Chemistry and Technology of Polymers; Silesian University of Technology; 9 Marcina Strzody Street 44-100 Gliwice Poland
| | - Przemyslaw Ledwon
- Department of Physical Chemistry and Technology of Polymers; Silesian University of Technology; 9 Marcina Strzody Street 44-100 Gliwice Poland
| | - Marta Musiol
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; 34 M. Curie-Skłodowskiej Street 41-819 Zabrze Poland
| | - Henryk Janeczek
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; 34 M. Curie-Skłodowskiej Street 41-819 Zabrze Poland
| | - Agnieszka Stolarczyk
- Department of Physical Chemistry and Technology of Polymers; Silesian University of Technology; 9 Marcina Strzody Street 44-100 Gliwice Poland
| | - Piotr Kurcok
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; 34 M. Curie-Skłodowskiej Street 41-819 Zabrze Poland
| | - Grazyna Adamus
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; 34 M. Curie-Skłodowskiej Street 41-819 Zabrze Poland
| | - Mieczyslaw Lapkowski
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; 34 M. Curie-Skłodowskiej Street 41-819 Zabrze Poland
- Department of Physical Chemistry and Technology of Polymers; Silesian University of Technology; 9 Marcina Strzody Street 44-100 Gliwice Poland
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Nanofibrous poly(3-hydroxybutyrate)/poly(3-hydroxyoctanoate) scaffolds provide a functional microenvironment for cartilage repair. J Biomater Appl 2016; 31:77-91. [DOI: 10.1177/0885328216639749] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Articular cartilage defects, when repaired ineffectively, often lead to further deterioration of the tissue, secondary osteoarthritis and, ultimately, joint replacement. Unfortunately, current surgical procedures are unable to restore normal cartilage function. Tissue engineering of cartilage provides promising strategies for the regeneration of damaged articular cartilage. As yet, there are still significant challenges that need to be overcome to match the long-term mechanical stability and durability of native cartilage. Using electrospinning of different blends of biodegradable poly(3-hydroxybutyrate)/poly(3-hydroxyoctanoate), we produced polymer scaffolds and optimised their structure, stiffness, degradation rates and biocompatibility. Scaffolds with a poly(3-hydroxybutyrate)/poly(3-hydroxyoctanoate) ratio of 1:0.25 exhibit randomly oriented fibres that closely mimic the collagen fibrillar meshwork of native cartilage and match the stiffness of native articular cartilage. Degradation of the scaffolds into products that could be easily removed from the body was indicated by changes in fibre structure, loss of molecular weight and a decrease in scaffold stiffness after one and four months. Histological and immunohistochemical analysis after three weeks of culture with human articular chondrocytes revealed a hyaline-like cartilage matrix. The ability to fine tune the ultrastructure and mechanical properties using different blends of poly(3-hydroxybutyrate)/poly(3-hydroxyoctanoate) allows to produce a cartilage repair kit for clinical use to reduce the risk of developing secondary osteoarthritis. We further suggest the development of a toolbox with tailor-made scaffolds for the repair of other tissues that require a ‘guiding’ structure to support the body’s self-healing process.
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Maksymiak M, Debowska R, Bazela K, Dzwigalowska A, Orchel A, Jelonek K, Dolegowska B, Kowalczuk M, Adamus G. Designing of Biodegradable and Biocompatible Release and Delivery Systems of Selected Antioxidants Used in Cosmetology. Biomacromolecules 2015; 16:3603-12. [PMID: 26444385 DOI: 10.1021/acs.biomac.5b01065] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Conjugates of antioxidants p-anisic (p-AA) and vanillic (VA) acids with nontoxic, biocompatible, and biodegradedable oligo-(R,S)-(3-hydoxybutyrate) carrier were synthesized, and their structural and biological characterization was performed. The molecular structure of the bioconjugates, in which antioxidants are covalently bonded with oligo(3-hydroxybutyrate) (OHB) chains, has been proven by mass spectrometry supported by NMR. The bioconjugate hydrolytic degradation studies allowed gaining thorough insight into the hydrolysis process and confirmed the release of p-AA and VA. In vitro studies demonstrated that all of the conjugates studied were well tolerated by KB and HaCaT cell lines, as they had no marked cytotoxicity, while conjugates with a relatively short OHB carrier are optimal to support keratinocyte function. The preliminary study of the biological activity confirmed the protective effect of VA-OHB conjugates against H2O2-induced lipid peroxidation in human keratinocytes (HaCaT). It was also demonstrated that the selected bioconjugates can penetrate all layers of the skin, which shows their functionality and opens up their potential application in cosmetology.
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Affiliation(s)
- Magdalena Maksymiak
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences , 34 M. Curie-Sklodowskiej Street, 41-819 Zabrze, Poland
| | - Renata Debowska
- Dr Irena Eris Centre for Science and Research , 107A Pulawska Street, 02-595 Warszawa, Poland
| | - Karolina Bazela
- Dr Irena Eris Centre for Science and Research , 107A Pulawska Street, 02-595 Warszawa, Poland
| | - Agata Dzwigalowska
- Dr Irena Eris Centre for Science and Research , 107A Pulawska Street, 02-595 Warszawa, Poland
| | - Arkadiusz Orchel
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Katowice, Poland, Chair and Department of Biopharmacy, 8 Jednosci Street, 41-208 Sosnowiec, Poland
| | - Katarzyna Jelonek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences , 34 M. Curie-Sklodowskiej Street, 41-819 Zabrze, Poland
| | - Barbara Dolegowska
- Department of Laboratory Diagnostics and Molecular Medicine, Pomeranian Medical University , 72 Powstancow Wielkopolskich Street, 70-111 Szczecin, Poland
| | - Marek Kowalczuk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences , 34 M. Curie-Sklodowskiej Street, 41-819 Zabrze, Poland.,School of Biology, Chemistry and Forensic Science, Faculty of Science and Engineering, University of Wolverhampton , Wulfruna Street, Wolverhampton, WV1 1SB, United Kingdom
| | - Grazyna Adamus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences , 34 M. Curie-Sklodowskiej Street, 41-819 Zabrze, Poland
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Abstract
Polyether-esterurethanes containing synthetic poly[(R,S)-3-hydroxybutyrate] (R,S-PHB) and polyoxytetramethylenediol in soft segments and polyesterurethanes with poly(ε-caprolactone) and poly[(R,S)-3-hydroxybutyrate] were blended with poly([D,L]-lactide) (PLA). The products were tested in terms of their oil and water absorption. Oil sorption tests of polyether-esterurethane revealed their higher response in comparison to polyesterurethanes. Blending of polyether-esterurethanes with PLA caused the increase of oil sorption. The highest water sorption was observed for blends of polyether-esterurethane, obtained with 10% of R,S-PHB in soft segments. The samples mass of polyurethanes and their blends were almost not changed after incubation in phosphate buffer and trypsin and lipase solutions. Nevertheless the molecular weight of polymers was significantly reduced after degradation. It was especially visible in case of incubation of samples in phosphate buffer what suggested the chemical hydrolysis of polymer chains. The changes of surface of polyurethanes and their blends, after incubation in both enzymatic solutions, indicated on enzymatic degradation, which had been started despite the lack of mass lost. Polyurethanes and their blends, contained more R,S-PHB in soft segments, were degraded faster.
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Jędrzkiewicz D, Ejfler J, Gulia N, John Ł, Szafert S. Designing ancillary ligands for heteroleptic/homoleptic zinc complex formation: synthesis, structures and application in ROP of lactides. Dalton Trans 2015; 44:13700-15. [DOI: 10.1039/c5dt01553g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis and characterization of a series of new amino-phenol/naphthol ligands (L1,2-H) have been developed and their respective zinc complexes (1 and 2-Zn) have been synthesized.
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Affiliation(s)
- D. Jędrzkiewicz
- Department of Chemistry
- University of Wrocław
- 50-383 Wrocław
- Poland
| | - J. Ejfler
- Department of Chemistry
- University of Wrocław
- 50-383 Wrocław
- Poland
| | - N. Gulia
- Department of Chemistry
- University of Wrocław
- 50-383 Wrocław
- Poland
| | - Ł. John
- Department of Chemistry
- University of Wrocław
- 50-383 Wrocław
- Poland
| | - S. Szafert
- Department of Chemistry
- University of Wrocław
- 50-383 Wrocław
- Poland
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Rydz J, Sikorska W, Kyulavska M, Christova D. Polyester-based (bio)degradable polymers as environmentally friendly materials for sustainable development. Int J Mol Sci 2014; 16:564-96. [PMID: 25551604 PMCID: PMC4307263 DOI: 10.3390/ijms16010564] [Citation(s) in RCA: 114] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 12/11/2014] [Indexed: 11/16/2022] Open
Abstract
This review focuses on the polyesters such as polylactide and polyhydroxyalkonoates, as well as polyamides produced from renewable resources, which are currently among the most promising (bio)degradable polymers. Synthetic pathways, favourable properties and utilisation (most important applications) of these attractive polymer families are outlined. Environmental impact and in particular (bio)degradation of aliphatic polyesters, polyamides and related copolymer structures are described in view of the potential applications in various fields.
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Affiliation(s)
- Joanna Rydz
- Bulgarian Academy of Sciences, Institute of Polymers, Acad. Georgi Bonchev St., Bl. 103A, Sofia 1113, Bulgaria.
| | - Wanda Sikorska
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, 34 M. Curie-Sklodowska St., Zabrze 41-800, Poland.
| | - Mariya Kyulavska
- Bulgarian Academy of Sciences, Institute of Polymers, Acad. Georgi Bonchev St., Bl. 103A, Sofia 1113, Bulgaria.
| | - Darinka Christova
- Bulgarian Academy of Sciences, Institute of Polymers, Acad. Georgi Bonchev St., Bl. 103A, Sofia 1113, Bulgaria.
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Recent toxicological investigations of metal or metal oxide nanoparticles in mammalian models in vitro and in vivo: DNA damaging potential, and relevant physicochemical characteristics. Mol Cell Toxicol 2014. [DOI: 10.1007/s13273-014-0013-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Wojtaszak J, Mierzwicki K, Szafert S, Gulia N, Ejfler J. Homoleptic aminophenolates of Zn, Mg and Ca. Synthesis, structure, DFT studies and polymerization activity in ROP of lactides. Dalton Trans 2014; 43:2424-36. [DOI: 10.1039/c3dt52868e] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Peng H, Liu X, Wang R, Jia F, Dong L, Wang Q. Emerging nanostructured materials for musculoskeletal tissue engineering. J Mater Chem B 2014; 2:6435-6461. [DOI: 10.1039/c4tb00344f] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This review summarizes the recent developments in the preparation and applications of nanostructured materials for musculoskeletal tissue engineering.
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Affiliation(s)
- Haisheng Peng
- Department of Chemical and Biological Engineering
- Iowa State University
- Ames, USA
- Department of Pharmaceutics
- Daqing Campus
| | - Xunpei Liu
- Department of Chemical and Biological Engineering
- Iowa State University
- Ames, USA
| | - Ran Wang
- Department of Pharmaceutics
- Daqing Campus
- Harbin Medical University
- Daqing, China
| | - Feng Jia
- Department of Chemical and Biological Engineering
- Iowa State University
- Ames, USA
| | - Liang Dong
- Department of Electrical and Computer Engineering
- Iowa State University
- Ames, USA
| | - Qun Wang
- Department of Chemical and Biological Engineering
- Iowa State University
- Ames, USA
- Department of Civil, Construction and Environmental Engineering
- Iowa State University
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Vydra N, Toma A, Glowala-Kosinska M, Gogler-Piglowska A, Widlak W. Overexpression of Heat Shock Transcription Factor 1 enhances the resistance of melanoma cells to doxorubicin and paclitaxel. BMC Cancer 2013; 13:504. [PMID: 24165036 PMCID: PMC4231344 DOI: 10.1186/1471-2407-13-504] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Accepted: 10/23/2013] [Indexed: 11/25/2022] Open
Abstract
Background Heat Shock Transcription Factor 1 (HSF1) is activated under stress conditions. In turn, it induces expression of Heat Shock Proteins (HSPs), which are well-known regulators of protein homeostasis. Elevated levels of HSF1 and HSPs were observed in many types of tumors. The aim of the present study was to determine whether HSF1 could have an effect on the survival of cancer cells treated with chemotherapeutic cytotoxic agents. Methods We constructed mouse (B16F10) and human (1205Lu, WM793B) melanoma cells overexpressing full or mutant form of human HSF1: a constitutively active one with a deletion in regulatory domain or a dominant negative one with a deletion in the activation domain. The impact of different forms of HSF1 on the expression of HSP and ABC genes was studied by RT-PCR and Western blotting. Cell cultures were treated with increasing amounts of doxorubicin, paclitaxel, cisplatin, vinblastine or bortezomib. Cell viability was determined by MTT, and IC50 was calculated. Cellular accumulation of fluorescent dyes and side population cells were studied using flow cytometry. Results Cells overexpressing HSF1 and characterized by increased HSPs accumulation were more resistant to doxorubicin or paclitaxel, but not to cisplatin, vinblastine or bortezomib. This resistance correlated with the enhanced efflux of fluorescent dyes and the increased number of side population cells. The expression of constitutively active mutant HSF1, also resulting in HSPs overproduction, did not reduce the sensitivity of melanoma cells to drugs, unlike in the case of dominant negative form expression. Cells overexpressing a full or dominant negative form of HSF1, but not a constitutively active one, had higher transcription levels of ABC genes when compared to control cells. Conclusions HSF1 overexpression facilitates the survival of melanoma cells treated with doxorubicin or paclitaxel. However, HSF1-mediated chemoresistance is not dependent on HSPs accumulation but on an increased potential for drug efflux by ABC transporters. Direct transcriptional activity of HSF1 is not necessary for increased expression of ABC genes, which is probably mediated by HSF1 regulatory domain.
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Affiliation(s)
- Natalia Vydra
- Maria Skłodowska-Curie Memorial Cancer Center and Institute of Oncology, Gliwice Branch, Wybrzeże Armii Krajowej 15, Gliwice, Poland.
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Kwiecień I, Adamus G, Bartkowiak A, Kowalczuk M. Synthesis and structural characterization at the molecular level of oligo(3-hydroxybutyrate) conjugates with antimicrobial agents designed for food packaging materials. Des Monomers Polym 2013. [DOI: 10.1080/15685551.2013.840505] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Affiliation(s)
- I. Kwiecień
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, 34, M. Curie-Skłodowska Street, 41819, Zabrze, Poland
| | - G. Adamus
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, 34, M. Curie-Skłodowska Street, 41819, Zabrze, Poland
| | - A. Bartkowiak
- Faculty of Food Sciences and Fisheries, Centre of Bioimmobilisation and Innovative Packing Materials, West Pomeranian University of Technology, 35, Klemensa Janickiego Street, 71270, Szczecin, Poland
| | - M. Kowalczuk
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, 34, M. Curie-Skłodowska Street, 41819, Zabrze, Poland
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Althuri A, Mathew J, Sindhu R, Banerjee R, Pandey A, Binod P. Microbial synthesis of poly-3-hydroxybutyrate and its application as targeted drug delivery vehicle. BIORESOURCE TECHNOLOGY 2013; 145:290-296. [PMID: 23415943 DOI: 10.1016/j.biortech.2013.01.106] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Revised: 01/15/2013] [Accepted: 01/17/2013] [Indexed: 06/01/2023]
Abstract
Arsenic trioxide loaded biocompatible PHB-PVA(1) nanoparticles (<100 nm in size) with folate functionalized surface were synthesized using poly-[(R)-3-hydroxybutyric acid] (PHB) produced by Bacillus firmus NII 0830. Folate functionalization was carried using dicyclohexyl carbodiimide (DCC) as a catalyst and 10-bromodecanol as a linker to conjugate glutamic acid terminal of folate with the hydroxylate groups present on the surface of PHBA-PVA(2) nanotrojans. The effect of fabrication parameters on shape, size distribution and PDI of the PHB nanoparticles were also investigated. It was observed that increase in sonication time and polyvinyl alcohol (PVA) concentration greatly reduced the size of nanoparticles. The drug release studies on arsenic trioxide incorporated PHB-PVA nanoparticles were conducted at physiological pH and temperature. FOL-PHBA-PVA(3) nanoparticles showed greater extent of cytotoxicity towards murine fibrosarcoma L929 cells than PHBA-PVA nanoparticles alone without conjugated folate, indicating the significance of folate as ligand for specific targeting of FR+ cancer cells.
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Affiliation(s)
- Avanthi Althuri
- Biotechnology Division, National Institute for Interdisciplinary Science and Technology, CSIR, Thiruvananthapuram, Kerala, India
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Elustondo PA, Angelova PR, Kawalec M, Michalak M, Kurcok P, Abramov AY, Pavlov EV. Polyhydroxybutyrate targets mammalian mitochondria and increases permeability of plasmalemmal and mitochondrial membranes. PLoS One 2013; 8:e75812. [PMID: 24086638 PMCID: PMC3781052 DOI: 10.1371/journal.pone.0075812] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Accepted: 08/21/2013] [Indexed: 01/21/2023] Open
Abstract
Poly(3-hydroxybutyrate) (PHB) is a polyester of 3-hydroxybutyric acid (HB) that is ubiquitously present in all organisms. In higher eukaryotes PHB is found in the length of 10 to 100 HB units and can be present in free form as well as in association with proteins and inorganic polyphosphate. It has been proposed that PHB can mediate ion transport across lipid bilayer membranes. We investigated the ability of PHB to interact with living cells and isolated mitochondria and the effects of these interactions on membrane ion transport. We performed experiments using a fluorescein derivative of PHB (fluo-PHB). We found that fluo-PHB preferentially accumulated inside the mitochondria of HeLa cells. Accumulation of fluo-PHB induced mitochondrial membrane depolarization. This membrane depolarization was significantly delayed by the inhibitor of the mitochondrial permeability transition pore - Cyclosporin A. Further experiments using intact cells as well as isolated mitochondria confirmed that the effects of PHB directly linked to its ability to facilitate ion transport, including calcium, across the membranes. We conclude that PHB demonstrates ionophoretic properties in biological membranes and this effect is most profound in mitochondria due to the selective accumulation of the polymer in this organelle.
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Affiliation(s)
- Pia A. Elustondo
- Department of Physiology and Biophysics, Dalhousie University, Halifax, Novia Scotia, Canada
| | | | - Michał Kawalec
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Zabrze, Poland
| | - Michał Michalak
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Zabrze, Poland
| | - Piotr Kurcok
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Zabrze, Poland
| | | | - Evgeny V. Pavlov
- Department of Physiology and Biophysics, Dalhousie University, Halifax, Novia Scotia, Canada
- * E-mail:
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Maksymiak M, Debowska R, Jelonek K, Kowalczuk M, Adamus G. Structural characterization of biocompatible lipoic acid-oligo-(3-hydroxybutyrate) conjugates by electrospray ionization mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2013; 27:773-783. [PMID: 23495024 DOI: 10.1002/rcm.6509] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Revised: 01/09/2013] [Accepted: 01/13/2013] [Indexed: 06/01/2023]
Abstract
RATIONALE Currently, most of the antioxidants and free radical neutralizers used in cosmetic compositions are absorbed quickly into deeper layers of skin, and then carried away by the blood stream. It would be beneficial to delay the penetration of antioxidants to the deeper layers of skin to control their delivery and release. METHODS Recently, growing attention has been paid to the attachment of cosmetics to specific polymer carriers. Biodegradable and biocompatible conjugates of oligo-3-hydroxybutyrate with lipoic acid were obtained via the anionic ring-opening oligomerization of (R,S)-β-butyrolactone initiated by lipoic acid potassium salt. The structure of the resulting conjugates as well as their water-soluble hydrolytic degradation products were established at the molecular level by electrospray ionization mass spectrometry (ESI-MS(n)) supported by (1)H NMR analyses. RESULTS The structural studies, performed with the aid of ESI-MS(n), confirmed that the lipoic acid was covalently bound to oligo-3-hydroxybutyrate chains through hydrolyzable ester bonds. Furthermore, hydrolytic degradation studies of the bioconjugates provided detailed insight into the hydrolysis process, allowing the identification of the degradation products and confirming the release of α-lipoic acid. Cytotoxicity tests demonstrated that the conjugates were non-toxic. CONCLUSIONS Detailed molecular structural studies of new polymeric delivery systems of lipoic acid were performed by ESI-MS. ESI-MS proved to be an excellent technique for the evaluation of hydrolytic degradation products of the conjugates and for monitoring the release of lipoic acid. The results obtained contribute significantly to the characterization of biocompatible LA-OHB conjugates with potential applications in cosmetology.
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Affiliation(s)
- Magdalena Maksymiak
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, 34 M. Curie-Sklodowskiej St., 41-819, Zabrze, Poland
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Kwiecień I, Adamus G, Kowalczuk M. Electrospray ionisation mass spectrometry molecular-level structural characterisation of novel phenoxycarboxylic acid-oligo(3-hydroxybutyrate) conjugates with potential agricultural applications. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2012; 26:2673-2682. [PMID: 23124657 DOI: 10.1002/rcm.6391] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
RATIONALE Due to the low resistance of forms of pesticides to environmental conditions, agrochemicals frequently do not reach their objective, which may cause environmental pollution. The minimisation of the adverse effects of pesticides requires the development of a system for their long-term controlled release. In the present work, we report the synthesis and structural studies of novel controlled-release pesticide-oligo-3-hydroxybutyrate systems with potential agricultural applications. METHODS The novel controlled-release pesticide-oligo(3-hydroxybutyrate) systems were obtained via the anionic ring-opening oligomerisation of (R,S)-β-butyrolactone initiated by the potassium salt of selected pesticides. Electrospray ionisation mass spectrometry (ESI-MS(n)) analyses in positive-ion mode, supported by (1)H NMR results, were used for the structural characterisation of the obtained conjugates. The presence of the respective pesticides in an unchanged form associated with oligo-3-hydroxybutyrate chains was confirmed by ESI-MS/MS experiments performed for selected pesticide-oligo(3-hydroxybutyrate) ions and by the subsequent investigation of their fragmentation pathways. RESULTS The structures of the resulting conjugates were established at the molecular level with the aid of ESI-MS(n). The presence of one and two chlorine atoms (derived from MCPA and 2,4-D pesticides) in the conjugates studied was confirmed by comparison of the calculated and experimental isotopic profiles for the selected ions of the respective conjugates. The fragmentation of the selected ions of the resulting conjugates confirmed that the respective pesticides are covalently bonded with oligo(3-hydroxybutyrate) through a hydrolysable ester bond. CONCLUSIONS An analytical method has been developed for the characterisation of new pesticide-oligo(3-hydroxybutyrate) conjugates. A detailed NMR and MS structural characterisation of the designed controlled-release system of the pesticides was performed. These results are important in the analysis of designed biodegradable polymeric conjugates with potential agricultural applications.
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Affiliation(s)
- Iwona Kwiecień
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, 34, M. Curie-Skłodowska Street, 41-819, Zabrze, Poland
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Michalak M, Kawalec M, Kurcok P. Reactive mono- and di-epoxy-functionalized poly(3-hydroxybutyrate)s. Synthesis and characterization. Polym Degrad Stab 2012. [DOI: 10.1016/j.polymdegradstab.2012.05.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Koseva NS, Novakov CP, Rydz J, Kurcok P, Kowalczuk M. Synthesis of aPHB-PEG Brush Co-polymers through ATRP in a Macroinitiator–Macromonomer Feed System and Their Characterization. Des Monomers Polym 2012. [DOI: 10.1163/138577210x530675] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Neli S. Koseva
- a Polish Academy of Sciences, Centre of Polymer and Carbon Materials, 34 M. Curie-Sklodowskiej Street, 41-800 Zabrze, Poland; Institute of Polymers, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Street, Bl. 103A, 1113 Sofia, Bulgaria
| | - Christo P. Novakov
- b Institute of Polymers, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Street, Bl. 103A, 1113 Sofia, Bulgaria
| | - Joanna Rydz
- c Polish Academy of Sciences, Centre of Polymer and Carbon Materials, 34 M. Curie-Sklodowskiej Street, 41-800 Zabrze, Poland
| | - Piotr Kurcok
- d Polish Academy of Sciences, Centre of Polymer and Carbon Materials, 34 M. Curie-Sklodowskiej Street, 41-800 Zabrze, Poland
| | - Marek Kowalczuk
- e Polish Academy of Sciences, Centre of Polymer and Carbon Materials, 34 M. Curie-Sklodowskiej Street, 41-800 Zabrze, Poland
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Petrak K. Nanotechnology and site-targeted drug delivery. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 17:1209-19. [PMID: 17176746 DOI: 10.1163/156856206778667497] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Nanotechnology, building on its ability to control or manipulate structures at the atomic level, promises to develop effective drug-delivery systems. This is to be achieved through creating structures that have novel properties because of their small size. This is not an entirely new concept in site-targeted drug delivery, and this critical review examines recent contributions made by 'nanotechnology' to solve critical issues concerning the development of therapeutically effective and acceptable site-targeted drug delivery systems. It is shown that very little progress has been made. For nanotechnology rationally to generate materials useful in human therapy it will need to progress in full recognition of all the requirements biology places on the acceptability of exogenous materials.
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Affiliation(s)
- Karel Petrak
- PJP Innovations, Inc., 707 Knox Street, Houston, TX 77007, USA.
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Ivantsova EL, Kosenko RY, Iordanskii AL, Rogovina SZ, Prut EV, Filatova AG, Gumargalieva KZ, Novikova SP, Berlin AA. Structure and prolonged transport in a biodegradable poly(R-3-hydroxybutyrate)-drug system. POLYMER SCIENCE SERIES A 2012. [DOI: 10.1134/s0965545x12020058] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Velasco D, Collin E, San Roman J, Pandit A, Elvira C. End functionalized polymeric system derived from pyrrolidine provide high transfection efficiency. Eur J Pharm Biopharm 2011; 79:485-94. [PMID: 21723390 DOI: 10.1016/j.ejpb.2011.06.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2010] [Revised: 06/13/2011] [Accepted: 06/14/2011] [Indexed: 11/19/2022]
Abstract
Chemical architecture and functionality play an important role in the physico-chemical properties of cationic polymers with applications as gene vectors. In this study, linear homopolymers of N-ethyl pyrrolidine methacrylamide (EPA), copolymers of EPA with N,N-dimethylacrylamide (DMA) and oligomers of EPA were synthesized, and the resulting structures were evaluated for their transfection efficiency as non-viral gene vectors. Specifically, polymer species with high and low molecular weights (120-2.6 kDa) and different functionalities (tertiary amines as side chains and primary amine as chain end) were prepared as non-crosslinked, linear homopolymers, copolymers and oligomers, respectively. Polymer/DNA complexes (polyplexes) formation was evaluated by agarose gel electrophoresis, showing that all systems complexed with DNA in all P/N ratios with the exception of the EPA homopolymer. Furthermore, light scattering measurements and transmission electronic microscopy (TEM) showed different size (50-450 nm) and morphology depending on the composition and concentration of the polyplex systems. Cell viability and proliferation after contact with polymer and polyplexes were studied using 3T3 fibroblasts, and the systems showed an excellent biocompatibility at 2 and 4 days. Transfection studies were performed with plasmid Gaussian luciferase kit and were found that the highest transfection efficiency in serum free was obtained with oligomers from the P/N ratio of 1/6 to 1/10. Transfection values of the functionalized oligomers with respect to the control linear poly (dimethylaminoethyl methacrylate) [poly (DMAEMA)] are very interesting in the presence of serum. Haemolysis for these polymers values below 1%, which provide attractive potential applications in gene therapy with these non-toxic readsorbable polymers.
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Affiliation(s)
- D Velasco
- Biomaterials Department, Institute of Polymer Science and Technology, CSIC, Madrid, Spain.
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Zhao J, Castranova V. Toxicology of nanomaterials used in nanomedicine. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART B, CRITICAL REVIEWS 2011; 14:593-632. [PMID: 22008094 DOI: 10.1080/10937404.2011.615113] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
With the development of nanotechnology, nanomaterials are being widely used in many industries as well as in medicine and pharmacology. Despite the many proposed advantages of nanomaterials, increasing concerns have been expressed on their potential adverse human health effects. In recent years, application of nanotechnology in medicine has been defined as nanomedicine. Techniques in nanomedicine make it possible to deliver therapeutic agents into targeted specific cells, cellular compartments, tissues, and organs by using nanoparticulate carriers. Because nanoparticles possess different physicochemical properties than their fine-sized analogues due to their extremely small size and large surface area, they need to be evaluated separately for toxicity and adverse health effects. In addition, in the field of nanomedicine, intravenous and subcutaneous injections of nanoparticulate carriers deliver exogenous nanoparticles directly into the human body without passing through the normal absorption process. These nanoparticulate carriers themselves may be responsible for toxicity and interaction with biological macromolecules within the human body. Second, insoluble nanoparticulate carriers may accumulate in human tissues or organs. Therefore, it is necessary to address the potential health and safety implications of nanomaterials used in nanomedicine. Toxicological studies for biosafety evaluation of these nanomaterials will be important for the continuous development of nanomedical science. This review summarizes the current knowledge on toxicology of nanomaterials, particularly on those used in nanomedicine.
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Affiliation(s)
- Jinshun Zhao
- Public Health Department of Medical School, Ningbo University, Ningbo, Zhejiang, P. R. China
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Stasiak P, Sznitowska M, Ehrhardt C, Luczyk-Juzwa M, Grieb P. In vivo assessment of parenteral formulations of oligo(3-hydroxybutyric Acid) conjugates with the model compound Ibuprofen. AAPS PharmSciTech 2010; 11:1636-41. [PMID: 21088943 PMCID: PMC3011063 DOI: 10.1208/s12249-010-9545-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2010] [Accepted: 11/09/2010] [Indexed: 11/30/2022] Open
Abstract
Polymer-drug conjugates have gained significant attention as pro-drugs releasing an active substance as a result of enzymatic hydrolysis in physiological environment. In this study, a conjugate of 3-hydroxybutyric acid oligomers with a carboxylic acid group-bearing model drug (ibuprofen) was evaluated in vivo as a potential pro-drug for parenteral administration. Two different formulations, an oily solution and an o/w emulsion were prepared and administered intramuscularly (IM) to rabbits in a dose corresponding to 40 mg of ibuprofen/kilogramme. The concentration of ibuprofen in blood plasma was analysed by HPLC, following solid–phase extraction and using indometacin as internal standard (detection limit, 0.05 μg/ml). No significant differences in the pharmacokinetic parameters (Cmax, Tmax, AUC) were observed between the two tested formulations of the 3-hydroxybutyric acid conjugate. In comparison to the non-conjugated drug in oily solution, the relative bioavailability of ibuprofen conjugates from oily solution, and o/w emulsion was reduced to 17% and 10%, respectively. The 3-hydroxybutyric acid formulations released the active substance over a significantly extended period of time with ibuprofen still being detectable 24 h post-injection, whereas the free compound was almost completely eliminated as early as 6 h after administration. The conjugates remained in a muscle tissue for a prolonged time and can hence be considered as sustained release systems for carboxylic acid derivatives.
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Ng CT, Li JJ, Bay BH, Yung LYL. Current studies into the genotoxic effects of nanomaterials. J Nucleic Acids 2010; 2010. [PMID: 20936181 PMCID: PMC2946614 DOI: 10.4061/2010/947859] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2010] [Revised: 07/20/2010] [Accepted: 07/20/2010] [Indexed: 11/30/2022] Open
Abstract
Nanotechnology has created opportunities for engineers to manufacture superior and more efficient devices and products. Nanomaterials (NMs) are now widely used in consumer products as well as for research applications. However, while the lists of known toxic effects of nanomaterials and nanoparticles (NPs) continue to grow, there is still a vast gap in our knowledge about the genotoxicity of NMs. In this paper, we highlight some NMs of interest and discuss the current in vivo and in vitro studies into genotoxic effects of NMs.
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Affiliation(s)
- Cheng-Teng Ng
- Department of Anatomy, Yong Loo Lin School of Medicine, National University of Singapore, 4 Medical Drive, Block MD10, Singapore 117597
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Kurosaki T, Kitahara T, Kawakami S, Higuchi Y, Yamaguchi A, Nakagawa H, Kodama Y, Hamamoto T, Hashida M, Sasaki H. γ-Polyglutamic acid-coated vectors for effective and safe gene therapy. J Control Release 2010; 142:404-10. [DOI: 10.1016/j.jconrel.2009.11.010] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2009] [Revised: 10/21/2009] [Accepted: 11/12/2009] [Indexed: 11/30/2022]
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Zawidlak-Wegrzyńska B, Kawalec M, Bosek I, Łuczyk-Juzwa M, Adamus G, Rusin A, Filipczak P, Głowala-Kosińska M, Wolańska K, Krawczyk Z, Kurcok P. Synthesis and antiproliferative properties of ibuprofen-oligo(3-hydroxybutyrate) conjugates. Eur J Med Chem 2010; 45:1833-42. [PMID: 20171760 DOI: 10.1016/j.ejmech.2010.01.020] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2009] [Revised: 01/07/2010] [Accepted: 01/11/2010] [Indexed: 02/07/2023]
Abstract
Synthesis of novel conjugates of the non-steroidal anti-inflammatory drug - ibuprofen with nontoxic oligo(3-hydroxybutyrate) (OHB) is described. Presented results indicate that anionic ring-opening polymerization of (R,S)-beta-butyrolactone initiated with an alkali metal salt of (S)-(+)-2-(4-isobutylphenyl)propionic acid (ibuprofen) may constitute a convenient method of conjugation of selected drugs with biodegradable OHB. Furthermore using the MTT cell proliferation assay we demonstrated that ibuprofen conjugated with OHB exhibited significantly increased, as compared to free ibuprofen, potential to inhibit proliferation of HT-29 and HCT 116 colon cancer cells. However, the conjugates of ibuprofen and OHB are less toxic as was shown in oral acute toxicity test in rats. Although the mechanism of antiproliferative activity of ibuprofen-OHB conjugates (Ibu-OHB) has to be established, we suggest that partially it can be related to more effective cellular uptake of the conjugate than the free drug. This assumption is based on the observation of much more efficient accumulation of a marker compound - OHB conjugated with fluorescein, in contrast to fluorescein sodium salt, which entered cells inefficiently. Further characterization of biological properties of the ibuprofen-OHB conjugates would provide insight into the mechanism of their antiproliferative effect and assess the potential relevance of their anticancer activity.
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Affiliation(s)
- Barbara Zawidlak-Wegrzyńska
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34, M. Curie-Skłodowska St., 41-819 Zabrze, Poland
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Stasiak P, Ehrhardt C, Juzwa M, Sznitowska M. Characterisation of a novel conjugate of ibuprofen with 3-hydroxybutyric acid oligomers. J Pharm Pharmacol 2010. [DOI: 10.1211/jpp.61.08.0017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Abstract
Objectives
A conjugate of ibuprofen with 3-hydroxybutyric acid oligomers has been evaluated as a novel drug delivery model system.
Methods
This paper focuses on the synthesis and the characterisation of the physicochemical properties of this conjugate, and on hydrolysis studies in aqueous buffers and simulated intestinal fluid. We also describe the development of an analytical method (HPLC) for hydrolysis studies of this compound.
Key findings
The conjugate had high stability in aqueous solutions of pH 6–8 and underwent slow enzymatic hydrolysis.
Conclusions
This conjugate is not well suited for oral administration but might be considered a candidate for development of prodrug preparations for parenteral or topical sustained release.
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Affiliation(s)
- Pawel Stasiak
- Department of Pharmaceutical Technology, Medical University of Gdansk, Poland
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Ireland
| | - Carsten Ehrhardt
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Ireland
| | - Maria Juzwa
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Zabrze, Poland
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Kowalczuk MM. Anionic ring-opening polymerization for synthetic analogues of aliphatic biopolyesters. POLYMER SCIENCE SERIES A 2009. [DOI: 10.1134/s0965545x09110078] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Chen C, Cheng YC, Yu CH, Chan SW, Cheung MK, Yu PHF. In vitro cytotoxicity, hemolysis assay, and biodegradation behavior of biodegradable poly(3-hydroxybutyrate)-poly(ethylene glycol)-poly(3-hydroxybutyrate) nanoparticles as potential drug carriers. J Biomed Mater Res A 2008; 87:290-8. [PMID: 18181106 DOI: 10.1002/jbm.a.31719] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Nanoparticles based on amorphous poly(3-hydroxybutyrate)-poly(ethylene glycol)-poly(3-hydroxybutyrate) (PHB-PEG-PHB) are potential drug delivery vehicles, and so their cytotoxicity and hemolysis assay were investigated in vitro using two kinds of animal cells. The PHB-PEG-PHB nanoparticles showed excellent biocompatibility and had no cytotoxicity on animal cells, even when the concentrations of the PHB-PEG-PHB nanoparticle dispersions were increased to 120 microg/mL. Moreover, no hemolysis was detected with the PHB-PEG-PHB nanoparticles, suggesting that the PHB-PEG-PHB nanoparticles were obviously much hemocompatible for drug delivery applications. In the presence of intracellular enzyme esterase, the biocompatible PHB-PEG-PHB nanoparticles might be hydrolyzed, and their biodegradable behavior was monitored by the fluorescence spectrum and the pH meter. The initial biodegradation rate of the PHB-PEG-PHB nanoparticles was closely related to the enzymatic amount and the PHB block length. Compared with that obtained from the fluorescence determination, the initial biodegradation rate from pH measurement was faster. The biodegraded products mainly consisted of 3HB monomer and dimer, which were the metabolites present in the body.
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Affiliation(s)
- Cheng Chen
- State Key Laboratory of Chinese Medicine and Molecular Pharmacology, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong, People's Republic of China.
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Kawalec M, Śmiga-Matuszowicz M, Kurcok P. Counterion and solvent effects on the anionic polymerization of β-butyrolactone initiated with acetic acid salts. Eur Polym J 2008. [DOI: 10.1016/j.eurpolymj.2008.09.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Juzwa M, Rusin A, Zawidlak-Węgrzyńska B, Krawczyk Z, Obara I, Jedliński Z. Oligo(3-hydroxybutanoate) conjugates with acetylsalicylic acid and their antitumour activity. Eur J Med Chem 2008; 43:1785-90. [DOI: 10.1016/j.ejmech.2007.11.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2007] [Revised: 11/06/2007] [Accepted: 11/12/2007] [Indexed: 10/22/2022]
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Shishatskaya EI, Voinova ON, Goreva AV, Mogilnaya OA, Volova TG. Biocompatibility of polyhydroxybutyrate microspheres: in vitro and in vivo evaluation. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2008; 19:2493-2502. [PMID: 18253816 DOI: 10.1007/s10856-007-3345-6] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2007] [Accepted: 12/05/2007] [Indexed: 05/25/2023]
Abstract
Microspheres have been prepared from the resorbable linear polyester of beta-hydroxybutyric acid (polyhydroxybutyrate, PHB) by the solvent evaporation technique and investigated in vitro and in vivo. Biocompatibility of the microspheres has been proved in tests in the culture of mouse fibroblast cell line NIH 3T3 and in experiments on intramuscular implantation of the microspheres to Wistar rats for 3 months. Tissue response to the implantation of polymeric microspheres has been found to consist in a mild inflammatory reaction, pronounced macrophage infiltration that increases over time, involving mono- and poly-nuclear foreign body giant cells that resorb the polymeric matrix. No fibrous capsules were formed around polymeric microparticles; neither necrosis nor any other adverse morphological changes and tissue transformation in response to the implantation of the PHB microparticles were recorded. The results of the study suggest that polyhydroxybutyrate is a good candidate for fabricating prolonged-action drugs in the form of microparticles intended for intramuscular injection.
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Affiliation(s)
- Ekaterina Igorevna Shishatskaya
- Laboratory of Chemoautotrophic Biosynthesis, Institute of Biophysics SB RAS (Siberian Branch Russian Academy of Sciences), Akademgorodok, 50, Krasnoyarsk 660036, Russia.
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Liu KL, Goh SH, Li J. Controlled synthesis and characterizations of amphiphilic poly[(R,S)-3-hydroxybutyrate]-poly(ethylene glycol)-poly[(R,S)-3-hydroxybutyrate] triblock copolymers. POLYMER 2008. [DOI: 10.1016/j.polymer.2007.12.017] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ejfler J, Szafert S, Mierzwicki K, Jerzykiewicz LB, Sobota P. Homo- and heteroleptic zinc aminophenolates as initiators for lactide polymerization. Dalton Trans 2008:6556-62. [DOI: 10.1039/b808882a] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kawalec M, Adamus G, Kurcok P, Kowalczuk M. Synthesis of Poly[(R,S)-3-hydroxybutyrate-block-ethylene glycol-block-(R,S)-3-hydroxybutyrate] via Anionic ROP. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/masy.200750707] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Koseva N, Kurcok P, Adamus G, Troev K, Kowalczuk M. Polyester-based Copolymers for Biomaterials Fabrication. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/masy.200750703] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Hughes GA. Nanostructure-mediated drug delivery. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2007; 1:22-30. [PMID: 17292054 DOI: 10.1016/j.nano.2004.11.009] [Citation(s) in RCA: 301] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2004] [Accepted: 11/30/2004] [Indexed: 11/17/2022]
Abstract
Nanotechnology is expected to have an impact on all industries including semiconductors, manufacturing, and biotechnology. Tools that provide the capability to characterize and manipulate materials at the nanoscale level further elucidate nanoscale phenomena and equip researchers and developers with the ability to fabricate novel materials and structures. One of the most promising societal impacts of nanotechnology is in the area of nanomedicine. Personalized health care, rational drug design, and targeted drug delivery are some of the benefits of a nanomedicine-based approach to therapy. This review will focus on the development of nanoscale drug delivery mechanisms. Nanostructured drug carriers allow for the delivery of not only small-molecule drugs but also the delivery of nucleic acids and proteins. Delivery of these molecules to specific areas within the body can be achieved, which will reduce systemic side effects and allow for more efficient use of the drug.
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GOLDBERG MICHAEL, LANGER ROBERT, JIA XINQIAO. Nanostructured materials for applications in drug delivery and tissue engineering. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2007; 18:241-68. [PMID: 17471764 PMCID: PMC3017754 DOI: 10.1163/156856207779996931] [Citation(s) in RCA: 588] [Impact Index Per Article: 34.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Research in the areas of drug delivery and tissue engineering has witnessed tremendous progress in recent years due to their unlimited potential to improve human health. Meanwhile, the development of nanotechnology provides opportunities to characterize, manipulate and organize matter systematically at the nanometer scale. Biomaterials with nano-scale organizations have been used as controlled release reservoirs for drug delivery and artificial matrices for tissue engineering. Drug-delivery systems can be synthesized with controlled composition, shape, size and morphology. Their surface properties can be manipulated to increase solubility, immunocompatibility and cellular uptake. The limitations of current drug delivery systems include suboptimal bioavailability, limited effective targeting and potential cytotoxicity. Promising and versatile nano-scale drug-delivery systems include nanoparticles, nanocapsules, nanotubes, nanogels and dendrimers. They can be used to deliver both small-molecule drugs and various classes of biomacromolecules, such as peptides, proteins, plasmid DNA and synthetic oligodeoxynucleotides. Whereas traditional tissue-engineering scaffolds were based on hydrolytically degradable macroporous materials, current approaches emphasize the control over cell behaviors and tissue formation by nano-scale topography that closely mimics the natural extracellular matrix (ECM). The understanding that the natural ECM is a multifunctional nanocomposite motivated researchers to develop nanofibrous scaffolds through electrospinning or self-assembly. Nanocomposites containing nanocrystals have been shown to elicit active bone growth. Drug delivery and tissue engineering are closely related fields. In fact, tissue engineering can be viewed as a special case of drug delivery where the goal is to accomplish controlled delivery of mammalian cells. Controlled release of therapeutic factors in turn will enhance the efficacy of tissue engineering. From a materials point of view, both the drug-delivery vehicles and tissue-engineering scaffolds need to be biocompatible and biodegradable. The biological functions of encapsulated drugs and cells can be dramatically enhanced by designing biomaterials with controlled organizations at the nanometer scale. This review summarizes the most recent development in utilizing nanostructured materials for applications in drug delivery and tissue engineering.
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Affiliation(s)
- MICHAEL GOLDBERG
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, E25-342, Cambridge, MA 02139, USA
| | - ROBERT LANGER
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, E25-342, Cambridge, MA 02139, USA
| | - XINQIAO JIA
- Department of Materials Science and Engineering, 201 DuPont Hall, University of Delaware, Newark, DE 19716, USA
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Chen C, Yu CH, Cheng YC, Yu PH, Cheung MK. Preparation and characterization of biodegradable nanoparticles based on amphiphilic poly(3-hydroxybutyrate)–poly(ethylene glycol)–poly(3-hydroxybutyrate) triblock copolymer. Eur Polym J 2006. [DOI: 10.1016/j.eurpolymj.2006.07.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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