51
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Soxman AG, DeLuca JM, Kinlough KM, Iwig DF, Mathers RT. Functionalization of polyesters with multiple B vitamins. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28713] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Andrew G. Soxman
- Department of Chemistry; The Pennsylvania State University; New Kensington Pennsylvania 15068
| | - Jenna M. DeLuca
- Department of Chemistry; The Pennsylvania State University; New Kensington Pennsylvania 15068
| | - Kylie M. Kinlough
- Department of Chemistry; The Pennsylvania State University; New Kensington Pennsylvania 15068
| | - David F. Iwig
- Arconic Technology Center; New Kensington Pennsylvania 15069
| | - Robert T. Mathers
- Department of Chemistry; The Pennsylvania State University; New Kensington Pennsylvania 15068
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52
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Alshaker H, Wang Q, Srivats S, Chao Y, Cooper C, Pchejetski D. New FTY720-docetaxel nanoparticle therapy overcomes FTY720-induced lymphopenia and inhibits metastatic breast tumour growth. Breast Cancer Res Treat 2017; 165:531-543. [PMID: 28695300 PMCID: PMC5602005 DOI: 10.1007/s10549-017-4380-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Accepted: 07/05/2017] [Indexed: 01/21/2023]
Abstract
Purpose Combining molecular therapies with chemotherapy may offer an improved clinical outcome for chemoresistant tumours. Sphingosine-1-phosphate (S1P) receptor antagonist and sphingosine kinase 1 (SK1) inhibitor FTY720 (FTY) has promising anticancer properties, however, it causes systemic lymphopenia which impairs its use in cancer patients. In this study, we developed a nanoparticle (NP) combining docetaxel (DTX) and FTY for enhanced anticancer effect, targeted tumour delivery and reduced systemic toxicity. Methods Docetaxel, FTY and glucosamine were covalently conjugated to poly(lactic-co-glycolic acid) (PLGA). NPs were characterised by dynamic light scattering and electron microscopy. The cellular uptake, cytotoxicity and in vivo antitumor efficacy of CNPs were evaluated. Results We show for the first time that in triple negative breast cancer cells FTY provides chemosensitisation to DTX, allowing a four-fold reduction in the effective dose. We have encapsulated both drugs in PLGA complex NPs (CNPs), with narrow size distribution of ~ 100 nm and excellent cancer cell uptake providing sequential, sustained release of FTY and DTX. In triple negative breast cancer cells and mouse breast cancer models, CNPs had similar efficacy to systemic free therapies, but allowed an effective drug dose reduction. Application of CNPs has significantly reversed chemotherapy side effects such as weight loss, liver toxicity and, most notably, lymphopenia. Conclusions We show for the first time the DTX chemosensitising effects of FTY in triple negative breast cancer. We further demonstrate that encapsulation of free drugs in CNPs can improve targeting, provide low off-target toxicity and most importantly reduce FTY-induced lymphopenia, offering potential therapeutic use of FTY in clinical cancer treatment. Electronic supplementary material The online version of this article (doi:10.1007/s10549-017-4380-8) contains supplementary material, which is available to authorised users.
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Affiliation(s)
- Heba Alshaker
- School of Medicine, University of East Anglia, 2.53 BCRE, Norwich Research Park, Norwich, NR47UQ, UK
- Department of Pharmacology and Biomedical Sciences, Faculty of Pharmacy and Medical Sciences, University of Petra, Amman, Jordan
| | - Qi Wang
- School of Medicine, University of East Anglia, 2.53 BCRE, Norwich Research Park, Norwich, NR47UQ, UK
| | - Shyam Srivats
- University of California San Francisco, Health Sciences East 1350, San Francisco, CA, 94143-0130, USA
| | - Yimin Chao
- School of Chemistry, University of East Anglia, Norwich, UK
| | - Colin Cooper
- School of Medicine, University of East Anglia, 2.53 BCRE, Norwich Research Park, Norwich, NR47UQ, UK
| | - Dmitri Pchejetski
- School of Medicine, University of East Anglia, 2.53 BCRE, Norwich Research Park, Norwich, NR47UQ, UK.
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53
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Navarro L, Ceaglio N, Rintoul I. Structure and properties of biocompatible poly(glycerol adipate) elastomers modified with ethylene glycol. Polym J 2017. [DOI: 10.1038/pj.2017.30] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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54
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Bilal MH, Hussain H, Prehm M, Baumeister U, Meister A, Hause G, Busse K, Mäder K, Kressler J. Synthesis of poly(glycerol adipate)- g -oleate and its ternary phase diagram with glycerol monooleate and water. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.03.057] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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55
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Saha A, Mohanta SC, Deka K, Deb P, Devi PS. Surface-Engineered Multifunctional Eu:Gd 2O 3 Nanoplates for Targeted and pH-Responsive Drug Delivery and Imaging Applications. ACS APPLIED MATERIALS & INTERFACES 2017; 9:4126-4141. [PMID: 28098453 DOI: 10.1021/acsami.6b12804] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
In this paper, we report the synthesis of surface-engineered multifunctional Eu:Gd2O3 triangular nanoplates with small size and uniform shape via a high-temperature solvothermal technique. Surface engineering has been performed by a one-step polyacrylate coating, followed by controlled conjugation chemistry. This creates the desired number of surface functional groups that can be used to attach folic acid as a targeting ligand on the nanoparticle surface. To specifically deliver the drug molecules in the nucleus, the folate density on the nanoparticle surface has been kept low. We have also modified the drug molecules with terminal double bond and ester linkage for the easy conjugation of nanoparticles. The nanoparticle surface was further modified with free thiols to specifically attach the modified drug molecules with a pH-responsive feature. High drug loading has been encountered for both hydrophilic drug daunorubicin (∼69% loading) and hydrophobic drug curcumin (∼75% loading) with excellent pH-responsive drug release. These nanoparticles have also been used as imaging probes in fluorescence imaging. Some preliminary experiments to evaluate their application in magnetic resonance imaging have also been explored. A detailed fluorescence imaging study has confirmed the efficient delivery of drugs to the nuclei of cancer cells with a high cytotoxic effect. Synthesized surface-engineered nanomaterials having small hydrodynamic size, excellent colloidal stability, and high drug-loading capacity, along with targeted and pH-responsive delivery of dual drugs to the cancer cells, will be potential nanobiomaterials for various biomedical applications.
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Affiliation(s)
- Arindam Saha
- Sensor and Actuator Division, CSIR-Central Glass and Ceramic Research Institute , Kolkata 700032, India
| | - Subas Chandra Mohanta
- Sensor and Actuator Division, CSIR-Central Glass and Ceramic Research Institute , Kolkata 700032, India
| | - Kashmiri Deka
- Department of Physics, Tezpur University , Tezpur 784028, India
| | - Pritam Deb
- Department of Physics, Tezpur University , Tezpur 784028, India
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56
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Meng W, Kallinteri P, Walker DA, Parker TL, Garnett MC. Evaluation of Poly (Glycerol-Adipate) Nanoparticle Uptake in an In Vitro 3-D Brain Tumor Co-Culture Model. Exp Biol Med (Maywood) 2016; 232:1100-8. [PMID: 17720956 DOI: 10.3181/0612-rm-301] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Despite the inherent problems associated with in vivo animal models of tumor growth and metastases, many of the current in vitro brain tumor models also do not accurately mimic tumor-host brain interactions. Therefore, there is a need to develop such co-culture models to study tumor biology and, importantly, the efficacy of drug delivery systems targeting the brain. So far, few investigations of this nature have been published. In this paper we describe the development of a new model system and its application to drug delivery assessment. For our new model, a co-culture of DAOY cell brain tumor aggregates and organo-typic brain slices was developed. Initially, the DAOY aggregates attached to cerebellum slices and invaded as a unit. Single cells in the periphery of the aggregate detached from the DAOY aggregates and gradually replaced normal brain cells. This invasive behavior of DAOY cells toward organotypic cerebellum slices shows a similar pattern to that seen in vivo. After validation of the co-culture model using transmission electron microscopy, nanoparticle (NP) uptake was then evaluated. Confocal micrographs illustrated that DAOY cells in this co-culture model took up most of the NPs, but few NPs were distributed into brain cells. This finding corresponded with results of NP uptake in DAOY and brain aggregates reported elsewhere.
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Affiliation(s)
- W Meng
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, United Kingdom
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Taresco V, Suksiriworapong J, Creasey R, Burley JC, Mantovani G, Alexander C, Treacher K, Booth J, Garnett MC. Properties of acyl modified poly(glycerol-adipate) comb-like polymers and their self-assembly into nanoparticles. JOURNAL OF POLYMER SCIENCE. PART A, POLYMER CHEMISTRY 2016; 54:3267-3278. [PMID: 28781423 PMCID: PMC5516180 DOI: 10.1002/pola.28215] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 06/15/2016] [Indexed: 12/18/2022]
Abstract
There is an increasing need to develop bio-compatible polymers with an increased range of different physicochemical properties. Poly(glycerol-adipate) (PGA) is a biocompatible, biodegradable amphiphilic polyester routinely produced from divinyl adipate and unprotected glycerol by an enzymatic route, bearing a hydroxyl group that can be further functionalized. Polymers with an average Mn of ∼13 kDa can be synthesized without any post-polymerization deprotection reactions. Acylated polymers with fatty acid chain length of C4, C8, and C18 (PGAB, PGAO, and PGAS, respectively) at different degrees of substitution were prepared. These modifications yield comb-like polymers that modulate the amphiphilic characteristics of PGA. This novel class of biocompatible polymers has been characterized through various techniques such as FT-IR, 1H NMR, surface, thermal analysis, and their ability to self-assemble into colloidal structures was evaluated by using DLS. The highly tunable properties of PGA reported herein demonstrate a biodegradable polymer platform, ideal for engineering solid dispersions, nanoemulsions, or nanoparticles for healthcare applications. © 2016 The Authors. Journal of Polymer Science Part A: Polymer Chemistry Published by Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2016, 54, 3267-3278.
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Affiliation(s)
- Vincenzo Taresco
- School of Pharmacy, University of Nottingham, University Park Nottingham NG7 2RD United Kingdom
| | | | - Rhiannon Creasey
- School of Chemical Engineering University of Queensland St Lucia QLD4067 Australia
| | - Jonathan C Burley
- School of Pharmacy, University of Nottingham, University Park Nottingham NG7 2RD United Kingdom
| | - Giuseppe Mantovani
- School of Pharmacy, University of Nottingham, University Park Nottingham NG7 2RD United Kingdom
| | - Cameron Alexander
- School of Pharmacy, University of Nottingham, University Park Nottingham NG7 2RD United Kingdom
| | | | | | - Martin C Garnett
- School of Pharmacy, University of Nottingham, University Park Nottingham NG7 2RD United Kingdom
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Taresco V, Creasey R, Kennon J, Mantovani G, Alexander C, Burley J, Garnett M. Variation in structure and properties of poly(glycerol adipate) via control of chain branching during enzymatic synthesis. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.02.036] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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59
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Bilal MH, Prehm M, Njau AE, Samiullah MH, Meister A, Kressler J. Enzymatic Synthesis and Characterization of Hydrophilic Sugar Based Polyesters and Their Modification with Stearic Acid. Polymers (Basel) 2016; 8:polym8030080. [PMID: 30979182 PMCID: PMC6432536 DOI: 10.3390/polym8030080] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 03/04/2016] [Accepted: 03/09/2016] [Indexed: 11/18/2022] Open
Abstract
Biodegradable and hydrophilic functional polyesters were synthesized enzymatically using xylitol or d-sorbitol together with divinyl adipate and lipase B from Candida antartica (CAL-B). The resulting polyesters had pendant OH-groups from their sugar units which were esterified to different degrees with stearic acid chloride. The structure and the degrees of polymerization of the resulting graft copolymers based on poly(xylitol adipate) and poly(d-sorbitol adipate) were characterized by 1H NMR spectroscopy and SEC. DSC, WAXS and SAXS measurements indicated that a phase separation between polymer backbone and stearoyl side chains occurred in the graft copolymers, and, additionally, the side chains were able to crystallize which resulted in the formation of a lamellar morphology. Additionally, nanoparticles of the graft copolymers in an aqueous environment were studied by DLS and negative stain TEM.
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Affiliation(s)
- Muhammad Humayun Bilal
- Department of Chemistry, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany.
| | - Marko Prehm
- Department of Chemistry, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany.
| | - Andrew Efraim Njau
- Department of Chemistry, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany.
| | - Muhammad Haris Samiullah
- Department of Chemistry, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany.
| | - Annette Meister
- Department of Chemistry, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany.
| | - Jörg Kressler
- Department of Chemistry, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany.
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60
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Taresco V, Suksiriworapong J, Styliari ID, Argent RH, Swainson SE, Booth J, Turpin E, Laughton CA, Burley JC, Alexander C, Garnett MC. New N-acyl amino acid-functionalized biodegradable polyesters for pharmaceutical and biomedical applications. RSC Adv 2016. [DOI: 10.1039/c6ra21464a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Aminoacyl PGA: a biodegradable polyester modified with amino acids to provide a range of physicochemical characteristics for interaction with drugs.
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Affiliation(s)
- Vincenzo Taresco
- University of Nottingham
- School of Pharmacy
- University Park
- Nottingham
- UK
| | | | | | - Richard H. Argent
- University of Nottingham
- School of Pharmacy
- University Park
- Nottingham
- UK
| | | | | | - Eleanor Turpin
- University of Nottingham
- School of Pharmacy
- University Park
- Nottingham
- UK
| | | | | | - Cameron Alexander
- University of Nottingham
- School of Pharmacy
- University Park
- Nottingham
- UK
| | - Martin C. Garnett
- University of Nottingham
- School of Pharmacy
- University Park
- Nottingham
- UK
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61
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Alfagih I, Kunda N, Alanazi F, Dennison SR, Somavarapu S, Hutcheon GA, Saleem IY. Pulmonary Delivery of Proteins Using Nanocomposite Microcarriers. J Pharm Sci 2015; 104:4386-4398. [DOI: 10.1002/jps.24681] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 07/15/2015] [Accepted: 09/09/2015] [Indexed: 12/26/2022]
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Ciobanu CS, Groza A, Iconaru SL, Popa CL, Chapon P, Chifiriuc MC, Hristu R, Stanciu GA, Negrila CC, Ghita RV, Ganciu M, Predoi D. Antimicrobial Activity Evaluation on Silver Doped Hydroxyapatite/Polydimethylsiloxane Composite Layer. BIOMED RESEARCH INTERNATIONAL 2015; 2015:926513. [PMID: 26504849 PMCID: PMC4609430 DOI: 10.1155/2015/926513] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 05/26/2015] [Indexed: 11/17/2022]
Abstract
The goal of this study was the preparation, physicochemical characterization, and microbiological evaluation of novel hydroxyapatite doped with silver/polydimethylsiloxane (Ag:HAp-PDMS) composite layers. In the first stage, the deposition of polydimethylsiloxane (PDMS) polymer layer on commercially pure Si disks has been produced in atmospheric pressure corona discharges. Finally, the new silver doped hydroxyapatite/polydimethylsiloxane composite layer has been obtained by the thermal evaporation technique. The Ag:HAp-PDMS composite layers were characterized by various techniques, such as Scanning Electron Microscopy (SEM), Glow Discharge Optical Emission Spectroscopy (GDOES), and X-ray photoelectron spectroscopy (XPS). The antimicrobial activity of the Ag:HAp-PDMS composite layer was assessed against Candida albicans ATCC 10231 (ATCC-American Type Culture Collection) by culture based and confirmed by SEM and Confocal Laser Scanning Microscopy (CLSM) methods. This is the first study reporting the antimicrobial effect of the Ag:HAp-PDMS composite layer, which proved to be active against Candida albicans biofilm embedded cells.
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Affiliation(s)
- C. S. Ciobanu
- National Institute for Materials Physics, P.O. Box MG 07, 077125 Magurele, Romania
| | - A. Groza
- National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor Street, P.O. Box MG 36, 077125 Magurele, Romania
| | - S. L. Iconaru
- National Institute for Materials Physics, P.O. Box MG 07, 077125 Magurele, Romania
| | - C. L. Popa
- National Institute for Materials Physics, P.O. Box MG 07, 077125 Magurele, Romania
- Faculty of Physics, University of Bucharest, 405 Atomistilor Street, P.O. Box MG1, 077125 Magurele, Romania
| | - P. Chapon
- Horiba Jobin Yvon SAS, 16-18 Rue du Canal, 91165 Longjumeau Cedex, France
| | - M. C. Chifiriuc
- Microbiology Department, Faculty of Biology, University of Bucharest, 1–3 Portocalelor Lane, Sector 5, 77206 Bucharest, Romania
- Earth, Environmental and Life Sciences Section, Research Institute of the University of Bucharest, 1–3 Portocalelor Lane, Sector 5, 77206 Bucharest, Romania
| | - R. Hristu
- Center for Microscopy-Microanalysis and Information Processing, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania
| | - G. A. Stanciu
- Center for Microscopy-Microanalysis and Information Processing, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania
| | - C. C. Negrila
- National Institute for Materials Physics, P.O. Box MG 07, 077125 Magurele, Romania
| | - R. V. Ghita
- National Institute for Materials Physics, P.O. Box MG 07, 077125 Magurele, Romania
| | - M. Ganciu
- National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor Street, P.O. Box MG 36, 077125 Magurele, Romania
| | - D. Predoi
- National Institute for Materials Physics, P.O. Box MG 07, 077125 Magurele, Romania
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Hakkou K, Bueno-Martínez M, Molina-Pinilla I, Galbis JA. Degradable poly(ester triazole)s based on renewable resources. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27710] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Khalid Hakkou
- Departamento de Química Orgánica y Farmacéutica. Facultad de Farmacia; Universidad de Sevilla; 41012 Sevilla Spain
| | - Manuel Bueno-Martínez
- Departamento de Química Orgánica y Farmacéutica. Facultad de Farmacia; Universidad de Sevilla; 41012 Sevilla Spain
| | - Inmaculada Molina-Pinilla
- Departamento de Química Orgánica y Farmacéutica. Facultad de Farmacia; Universidad de Sevilla; 41012 Sevilla Spain
| | - Juan A. Galbis
- Departamento de Química Orgánica y Farmacéutica. Facultad de Farmacia; Universidad de Sevilla; 41012 Sevilla Spain
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Naolou T, Hussain H, Baleed S, Busse K, Lechner BD, Kressler J. The behavior of fatty acid modified poly(glycerol adipate) at the air/water interface. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2014.12.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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65
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Haryanto, Singh D, Han SS, Son JH, Kim SC. Poly(ethylene glycol) dicarboxylate/poly(ethylene oxide) hydrogel film co-crosslinked by electron beam irradiation as an anti-adhesion barrier. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 46:195-201. [DOI: 10.1016/j.msec.2014.10.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 09/26/2014] [Accepted: 10/08/2014] [Indexed: 11/16/2022]
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66
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Zhang H, Grinstaff MW. Recent advances in glycerol polymers: chemistry and biomedical applications. Macromol Rapid Commun 2014; 35:1906-24. [PMID: 25308354 PMCID: PMC4415886 DOI: 10.1002/marc.201400389] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Revised: 08/08/2014] [Indexed: 12/19/2022]
Abstract
Glycerol polymers are attracting increased attention due to the diversity of polymer compositions and architectures available. This article provides a brief chronological review on the current status of these polymers along with representative examples of their use for biomedical applications. First, the underlying chemistry of glycerol that provides access to a range of monomers for subsequent polymerizations is described. Then, the various synthetic methodologies to prepare glycerol-based polymers including polyethers, polycarbonates, polyesters, and so forth are reviewed. Next, several biomedical applications where glycerol polymers are being investigated including carriers for drug delivery, sealants or coatings for tissue repair, and agents possessing antibacterial activity are described. Fourth, the growing market opportunity for the use of polymers in medicine is described. Finally, the findings are concluded and summarized, as well as the potential opportunities for continued research efforts are discussed.
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Affiliation(s)
- Heng Zhang
- Departments of Biomedical Engineering and Chemistry, Boston University, Boston, Massachusetts 02215, United States
| | - Mark W. Grinstaff
- Departments of Biomedical Engineering and Chemistry, Boston University, Boston, Massachusetts 02215, United States
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Kunda NK, Alfagih IM, Dennison SR, Tawfeek HM, Somavarapu S, Hutcheon GA, Saleem IY. Bovine serum albumin adsorbed PGA-co-PDL nanocarriers for vaccine delivery via dry powder inhalation. Pharm Res 2014; 32:1341-53. [PMID: 25297713 DOI: 10.1007/s11095-014-1538-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Accepted: 09/29/2014] [Indexed: 11/30/2022]
Abstract
PURPOSE Dry powder vaccine delivery via the pulmonary route has gained significant attention as an alternate route to parenteral delivery. In this study, we investigated bovine serum albumin (BSA) adsorbed poly(glycerol adipate-co-ω-pentadecalactone), PGA-co-PDL polymeric nanoparticles (NPs) within L-leucine (L-leu) microcarriers for dry powder inhalation. METHODS NPs were prepared by oil-in-water single emulsion-solvent evaporation and particle size optimised using Taguchi's design of experiment. BSA was adsorbed onto NPs at different ratios at room temperature. The NPs were spray-dried in aqueous suspension of L-leu (1:1.5) using a Büchi-290 mini-spray dryer. The resultant nanocomposite microparticles (NCMPs) were characterised for toxicity (MTT assay), aerosolization (Next Generation Impactor), in vitro release study and BSA was characterized using SDS-PAGE and CD respectively. RESULTS NPs of size 128.50 ± 6.57 nm, PDI 0.07 ± 0.03 suitable for targeting lung dendritic cells were produced. BSA adsorption for 1 h resulted in 10.23 ± 1.87 μg of protein per mg of NPs. Spray-drying with L-leu resulted in NCMPs with 42.35 ± 3.17% yield. In vitro release study at 37°C showed an initial burst release of 30.15 ± 2.33% with 95.15 ± 1.08% over 48 h. Aerosolization studies indicated fine particle fraction (FPF%) dae < 4.46 μm as 76.95 ± 5.61% and mass median aerodynamic diameter (MMAD) of 1.21 ± 0.67 μm. The cell viability was 87.01 ± 14.11% (A549 cell line) and 106.04 ± 21.14% (16HBE14o- cell line) with L-leu based NCMPs at 1.25 mg/ml concentration after 24 h treatment. The SDS-PAGE and CD confirmed the primary and secondary structure of the released BSA. CONCLUSIONS The results suggest that PGA-co-PDL/L-leu NCMPs may be a promising carrier for pulmonary vaccine delivery due to excellent BSA adsorption and aerosolization behaviour.
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Affiliation(s)
- Nitesh K Kunda
- Formulation and Drug Delivery Research, School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, James Parson Building, Byrom Street, Liverpool, L3 3AF, UK
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Jbeily M, Naolou T, Bilal M, Amado E, Kressler J. Enzymatically synthesized polyesters with pendent OH groups as macroinitiators for the preparation of well-defined graft copolymers by atom transfer radical polymerization. POLYM INT 2014. [DOI: 10.1002/pi.4676] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Mark Jbeily
- Martin Luther University Halle-Wittenberg; Department of Chemistry; D-06099 Halle (Saale) Germany
| | - Toufik Naolou
- Martin Luther University Halle-Wittenberg; Department of Chemistry; D-06099 Halle (Saale) Germany
| | - Muhammad Bilal
- Martin Luther University Halle-Wittenberg; Department of Chemistry; D-06099 Halle (Saale) Germany
| | - Elkin Amado
- Martin Luther University Halle-Wittenberg; Department of Chemistry; D-06099 Halle (Saale) Germany
| | - Jörg Kressler
- Martin Luther University Halle-Wittenberg; Department of Chemistry; D-06099 Halle (Saale) Germany
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69
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In vitro toxicity of Stearoyl-poly(glycerol adipate) nanoparticles. J Appl Biomater Funct Mater 2013; 10:163-9. [PMID: 23242880 DOI: 10.5301/jabfm.2012.10294] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/05/2012] [Indexed: 11/20/2022] Open
Abstract
PURPOSE Poly(glycerol adipate) (PGA)-based nanoparticles are promising carriers for drug delivery with a wide range of available structures. The biodegradable polymer with pendant free hydroxyl groups can be diversely functionalized. In this study, the toxicity of different Stearoyl-PGA nanoparticles with respect to erythrocytes and HepG2 cells was assessed. These cells are crucial test systems for intravenously injected biomedical particles. METHODS For this work, a series of PGA polyesters with 0, 20, 50 and 65 mol% of converted hydroxyl groups was synthesized with stearic acid (PGABB, S20, S50, S65). Nanoparticles were prepared with these polymers by an optimized nanoprecipitation method. Physicochemical characterization was performed by photon correlation spectroscopy and zeta potential measurement. Cell compatibility was studied by a hemolysis assay with separated red blood cells as well as a QBlue viability test and a modified LDH cytotoxicity assay with HepG2 cells. RESULTS AND CONCLUSIONS Different self-stabilizing nanoparticles with narrow size distributions in the range of 100-140 nm were prepared. All tested nanoparticle samples were nontoxic for HepG2 cells. In fact, increased metabolic activity and proliferation was observed after 24 h incubation with the Stearoyl-PGA particles. Apart from PGAS20, all samples did not show any hemolytic effect. Hemolysis of PGAS20 particles could be considerably decreased by adding Poloxamer 188 during the preparation process.
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70
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Zhang H, Grinstaff MW. Terpolymerization of benzyl glycidyl ether, propylene oxide, and CO2 using binary and bifunctional [rac-SalcyCoIIIX] complexes and the thermal and mechanical properties of the resultant poly(benzyl 1,2-glycerol-co-propylene carbonate)s and poly(1,2-glycer. J Appl Polym Sci 2013. [DOI: 10.1002/app.39893] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Heng Zhang
- Departments of Biomedical Engineering and Chemistry; Boston University; Boston Massachusetts 02215
| | - Mark W. Grinstaff
- Departments of Biomedical Engineering and Chemistry; Boston University; Boston Massachusetts 02215
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71
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Tawfeek HM, Khidr SH, Samy EM, Ahmed SM, Gaskell EE, Hutcheon GA. Evaluation of biodegradable polyester-co-lactone microparticles for protein delivery. Drug Dev Ind Pharm 2013; 40:1213-22. [DOI: 10.3109/03639045.2013.814060] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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72
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Zhang H, Grinstaff MW. Synthesis of Atactic and Isotactic Poly(1,2-glycerol carbonate)s: Degradable Polymers for Biomedical and Pharmaceutical Applications. J Am Chem Soc 2013; 135:6806-9. [DOI: 10.1021/ja402558m] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Heng Zhang
- Departments of Biomedical Engineering and Chemistry, Boston University, Boston, Massachusetts 02215, United
States
| | - Mark W. Grinstaff
- Departments of Biomedical Engineering and Chemistry, Boston University, Boston, Massachusetts 02215, United
States
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73
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Krycka KL, Borchers JA, Salazar-Alvarez G, López-Ortega A, Estrader M, Estradé S, Winkler E, Zysler RD, Sort J, Peiró F, Baró MD, Kao CC, Nogués J. Resolving material-specific structures within Fe₃O₄|γ-Mn₂O₃ core|shell nanoparticles using anomalous small-angle X-ray scattering. ACS NANO 2013; 7:921-931. [PMID: 23320459 DOI: 10.1021/nn303600e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Here it is demonstrated that multiple-energy, anomalous small-angle X-ray scattering (ASAXS) provides significant enhancement in sensitivity to internal material boundaries of layered nanoparticles compared with the traditional modeling of a single scattering energy, even for cases in which high scattering contrast naturally exists. Specifically, the material-specific structure of monodispersed Fe₃O₄|γ-Mn₂O₃ core|shell nanoparticles is determined, and the contribution of each component to the total scattering profile is identified with unprecedented clarity. We show that Fe₃O₄|γ-Mn₂O₃ core|shell nanoparticles with a diameter of 8.2 ± 0.2 nm consist of a core with a composition near Fe₃O₄ surrounded by a (Mn(x)Fe(1-x))₃O₄ shell with a graded composition, ranging from x ≈ 0.40 at the inner shell toward x ≈ 0.46 at the surface. Evaluation of the scattering contribution arising from the interference between material-specific layers additionally reveals the presence of Fe₃O₄ cores without a coating shell. Finally, it is found that the material-specific scattering profile shapes and chemical compositions extracted by this method are independent of the original input chemical compositions used in the analysis, revealing multiple-energy ASAXS as a powerful tool for determining internal nanostructured morphology even if the exact composition of the individual layers is not known a priori.
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Affiliation(s)
- Kathryn L Krycka
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA.
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74
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Naolou T, Weiss VM, Conrad D, Busse K, Mäder K, Kressler J. Fatty Acid Modified Poly(glycerol adipate) - Polymeric Analogues of Glycerides. ACS SYMPOSIUM SERIES 2013. [DOI: 10.1021/bk-2013-1135.ch004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- T. Naolou
- Institute of Chemistry, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany
| | - V. M. Weiss
- Institute of Chemistry, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany
| | - D. Conrad
- Institute of Chemistry, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany
| | - K. Busse
- Institute of Chemistry, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany
| | - K. Mäder
- Institute of Chemistry, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany
| | - J. Kressler
- Institute of Chemistry, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany
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75
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Tawfeek HM, Evans AR, Iftikhar A, Mohammed AR, Shabir A, Somavarapu S, Hutcheon GA, Saleem IY. Dry powder inhalation of macromolecules using novel PEG-co-polyester microparticle carriers. Int J Pharm 2013; 441:611-9. [DOI: 10.1016/j.ijpharm.2012.10.036] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2012] [Revised: 09/10/2012] [Accepted: 10/24/2012] [Indexed: 11/27/2022]
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76
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Hemmer E, Takeshita H, Yamano T, Fujiki T, Kohl Y, Löw K, Venkatachalam N, Hyodo H, Kishimoto H, Soga K. In vitro and in vivo investigations of upconversion and NIR emitting Gd₂O₃:Er³⁺,Yb³⁺ nanostructures for biomedical applications. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2012; 23:2399-2412. [PMID: 22588504 DOI: 10.1007/s10856-012-4671-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2011] [Accepted: 05/02/2012] [Indexed: 05/31/2023]
Abstract
The use of an "over 1000-nm near-infrared (NIR) in vivo fluorescence bioimaging" system based on lanthanide containing inorganic nanostructures emitting in the visible and NIR range under 980-nm excitation is proposed. It may overcome problems of currently used biomarkers including color fading, phototoxicity and scattering. Gd(2)O(3):Er(3+),Yb(3+) nanoparticles and nanorods showing upconversion and NIR emission are synthesized and their cytotoxic behavior is investigated by incubation with B-cell hybridomas and macrophages. Surface modification with PEG-b-PAAc provides the necessary chemical durability reducing the release of toxic Gd(3+) ions. NIR fluorescence microscopy is used to investigate the suitability of the nanostructures as NIR-NIR biomarkers. The in vitro uptake of bare and modified nanostructures by macrophages is investigated by confocal laser scanning microscopy. In vivo investigations revealed nanostructures in liver, lung, kidneys and spleen a few hours after injection into mice, while most of the nanostructures have been removed from the body after 24 h.
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Affiliation(s)
- Eva Hemmer
- Center for Technologies Against Cancer, Tokyo University of Science, 2669 Yamazaki, Chiba 278-0022, Japan.
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77
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Zhang S, Wang L, Yang S, Gong Y. Improved biocompatibility of phosphorylcholine end-capped poly(butylene succinate). Sci China Chem 2012. [DOI: 10.1007/s11426-012-4759-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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78
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Wahab A, Favretto ME, Onyeagor ND, Khan GM, Douroumis D, Casely-Hayford MA, Kallinteri P. Development of poly(glycerol adipate) nanoparticles loaded with non-steroidal anti-inflammatory drugs. J Microencapsul 2012; 29:497-504. [PMID: 22769722 DOI: 10.3109/02652048.2012.665087] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The aim of this study was to assess acylated and non-acylated poly(glycerol adipate) polymers (PGA) as suitable nanoparticulate systems for encapsulation and release of ibuprofen, ibuprofen sodium salt (IBU-Na) and ketoprofen as model drugs. Drug encapsulated nanoparticles were prepared using the interfacial deposition method in the absence of surfactants. Physicochemical characterisation studies of the produced loaded nanoparticles showed that drug-polymer interactions depend on the characteristics of the actual active substance. IBU-Na showed strong interactions with the polymers and it was found to be molecularly dispersed within the polymer matrix while ibuprofen and ketoprofen retained their crystalline state. The drug release profiles showed stepwise patterns which involve an initial burst release effect, diffusion of the drug from the polymer matrix and eventually drug release possibly via a combined mechanism. PGA polymers can be effectively used as drug delivery carriers for various active substances.
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Affiliation(s)
- Abdul Wahab
- Medway School of Pharmacy, Universities of Kent/Greenwich, Central Avenue, Chatham Maritime, ME4 4TB Kent, UK
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79
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Wolinsky JB, Yohe ST, Colson YL, Grinstaff MW. Functionalized hydrophobic poly(glycerol-co-ε-caprolactone) depots for controlled drug release. Biomacromolecules 2012; 13:406-11. [PMID: 22242897 PMCID: PMC3878815 DOI: 10.1021/bm201443m] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A limitation to many polymer-based drug delivery systems is the lack of ability to customize a particular polymer composition for tailoring drug release kinetics to a specific clinical application. In this study, we investigated the structure-property effects of conjugating various hydrophobic biocompatible side chains to poly(glycerol-co-caprolactone) copolymers with the goal of achieving prolonged and controlled release of a chemotherapeutic agent. The choice of side chain significantly affected the resulting polymer properties including thermal transitions, relative crystallinity (ΔH(f)), and hydrophobicity. Drug-loaded films cast from solutions of polymer and 10-hydroxycamptothecin demonstrated prolonged release from four to over seven weeks depending upon side chain structure without initial burst release behavior. Use of the stearic acid-conjugated poly(glycerol-co-caprolactone) films afforded substantial anticancer activity in vitro for at least 50 days when exposed to fresh cultures of A549 human lung cancer cells over 24 h intervals, correlating well with the measured drug release kinetics.
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Affiliation(s)
- Jesse B Wolinsky
- Department of Biomedical Engineering and Chemistry, Boston University, Boston, Massachusetts, United States
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80
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Weiss VM, Naolou T, Hause G, Kuntsche J, Kressler J, Mäder K. Poly(glycerol adipate)-fatty acid esters as versatile nanocarriers: From nanocubes over ellipsoids to nanospheres. J Control Release 2012; 158:156-64. [DOI: 10.1016/j.jconrel.2011.09.077] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2011] [Revised: 09/15/2011] [Accepted: 09/18/2011] [Indexed: 10/17/2022]
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81
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Weiss VM, Naolou T, Amado E, Busse K, Mäder K, Kressler J. Formation of Structured Polygonal Nanoparticles by Phase-Separated Comb-Like Polymers. Macromol Rapid Commun 2011; 33:35-40. [DOI: 10.1002/marc.201100565] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2011] [Indexed: 01/30/2023]
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82
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Poly(Glycerol Adipate-co-ω-Pentadecalactone) Spray-Dried Microparticles as Sustained Release Carriers for Pulmonary Delivery. Pharm Res 2011; 28:2086-97. [DOI: 10.1007/s11095-011-0433-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2010] [Accepted: 03/14/2011] [Indexed: 11/25/2022]
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83
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Naolou T, Busse K, Kressler J. Synthesis of Well-Defined Graft Copolymers by Combination of Enzymatic Polycondensation and “Click” Chemistry. Biomacromolecules 2010; 11:3660-7. [DOI: 10.1021/bm1011085] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Toufik Naolou
- Martin Luther University Halle-Wittenberg, Department of Chemistry, D-06099 Halle (Saale), Germany
| | - Karsten Busse
- Martin Luther University Halle-Wittenberg, Department of Chemistry, D-06099 Halle (Saale), Germany
| | - Jörg Kressler
- Martin Luther University Halle-Wittenberg, Department of Chemistry, D-06099 Halle (Saale), Germany
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84
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Bray CL, Tan B, Higgins S, Cooper AI. Polymer CO2 Solubility. Structure/Property Relationships in Polyester Libraries. Macromolecules 2010. [DOI: 10.1021/ma1016055] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Christopher L. Bray
- Department of Chemistry and Centre for Materials Discovery, University of Liverpool, Crown Street, Liverpool L69 3BX, U.K
| | - Bien Tan
- Department of Chemistry and Centre for Materials Discovery, University of Liverpool, Crown Street, Liverpool L69 3BX, U.K
- School of Chemistry and Chemical Engineering, Huazhong University of Science & Technology Wuhan 4300074, China
| | - Sean Higgins
- Department of Chemistry and Centre for Materials Discovery, University of Liverpool, Crown Street, Liverpool L69 3BX, U.K
| | - Andrew I. Cooper
- Department of Chemistry and Centre for Materials Discovery, University of Liverpool, Crown Street, Liverpool L69 3BX, U.K
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85
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Pang Y, Liu J, Wu J, Li G, Wang R, Su Y, He P, Zhu X, Yan D, Zhu B. Synthesis, characterization, and in vitro evaluation of long-chain hyperbranched poly(ethylene glycol) as drug carrier. Bioconjug Chem 2010; 21:2093-102. [PMID: 20923233 DOI: 10.1021/bc100325a] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of novel long-chain hyperbranched poly(ethylene glycol)s (LHPEGs) with biodegradable connections were designed and synthesized in one pot through proton-transfer polymerization using PEG and commercial glycidyl methacrylate as monomers and potassium hydride as catalyst. The LHPEGs were hydrolyzed at neutral pH resulting in the decrease of molecular weights. In vitro evaluation demonstrated that LHPEGs were biocompatible and displayed negligible hemolytic activity. The efficient cellular uptake of LHPEGs was confirmed by flow cytometry and confocal laser scanning microscopy. Moreover, conjugation of a model hydrophobic anticancer drug methotrexate to LHPEGs inhibited the proliferation of a human cervical carcinoma Hela cell line. MTT assay indicated that the conjugated methotrexate dose required for 50% cellular growth inhibition against Hela cells was 20 μg/mL. By combining the advantages of long-chain hyperbranched structure and PEG, LHPEG provides a promising drug carrier for therapeutic fields.
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Affiliation(s)
- Yan Pang
- Instrumental Analysis Center, Shanghai Jiao Tong University, People's Republic of China
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86
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Zerkowski JA, Nuñez A, Solaiman DKY. Selectively Functionalized Glycerol/Diacid Dendrimers via Click Chemistry of Azido Fatty Acids. J AM OIL CHEM SOC 2010. [DOI: 10.1007/s11746-010-1675-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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87
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You Z, Cao H, Gao J, Shin PH, Day BW, Wang Y. A functionalizable polyester with free hydroxyl groups and tunable physiochemical and biological properties. Biomaterials 2010; 31:3129-38. [PMID: 20149441 PMCID: PMC2827675 DOI: 10.1016/j.biomaterials.2010.01.023] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2009] [Accepted: 01/08/2010] [Indexed: 11/23/2022]
Abstract
Polyesters with free functional groups allow facile modifications with biomolecules, which can lead to versatile biomaterials that afford controlled interactions with cells and tissues. Efficient synthesis of functionalizable polyesters (Functionalizable polymer is defined as a polymer with functional groups that readily react with biomolecules and functionalized biomaterial as one already modified with biomolecules.) is still a challenge that greatly limits the availability and widespread applications of biofunctionalized synthetic polymers. Here we report a simple route to prepare a functionalizable polyester, poly(sebacoyl diglyceride) (PSeD) bearing free hydroxyl groups. The key synthetic step is an epoxide ring-opening polymerization, instead of the traditional polycondensation that produces poly(glycerol sebacate) (PGS) (Wang YD, Ameer GA, Sheppard BJ, Langer R. A tough biodegradable elastomer. Nat Biotechnol 2002;20(6):602-6). PSeD has a more defined structure with mostly linear backbone, more free hydroxyl groups, higher molecular weight, and lower polydispersity than PGS. Crosslinking PSeD with sebacic acid yields a polymer five times tougher and more elastic than cured PGS. PSeD exhibits good cytocompatibility in vitro. Furthermore, functionalization by glycine proceeds with high efficiency. This versatile synthetic platform can offer a large family of biodegradable, functionalized polymers with tunable physiochemical and biological properties useful for a wide range of biomedical applications.
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Affiliation(s)
- Zhengwei You
- Department of Bioengineering and the McGowan Institute, University of Pittsburgh, 300 Technology Drive, Pittsburgh, PA 15219, USA
| | - Haiping Cao
- Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Jin Gao
- Department of Bioengineering and the McGowan Institute, University of Pittsburgh, 300 Technology Drive, Pittsburgh, PA 15219, USA
| | - Paul H. Shin
- Department of Bioengineering and the McGowan Institute, University of Pittsburgh, 300 Technology Drive, Pittsburgh, PA 15219, USA
| | - Billy W. Day
- Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, PA 15213, USA
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Yadong Wang
- Department of Bioengineering and the McGowan Institute, University of Pittsburgh, 300 Technology Drive, Pittsburgh, PA 15219, USA
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88
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Sandoval G, Rivera I, Barrera-Rivera KA, Martínez-Richa A. Biopolymer Synthesis Catalyzed by Tailored Lipases. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/masy.200900016] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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89
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Abstract
Silicon and its oxides are widely used in biomaterials research, tissue engineering and drug delivery. These materials are highly biocompatible, easily surface functionalized, degrade into nontoxic silicic acid and can be processed into various forms such as micro- and nano-particles, monoliths, membranes and micromachined structures. The large surface area of porous forms of silicon and silica (up to 1200 m2/g) permits high drug loadings. The degradation kinetics of silicon- and silica-based materials can be tailored by coating or grafting with polymers. Incorporation of polymers also improves control over drug-release kinetics. The use of stimuli-responsive polymers has enabled environmental stimuli-triggered drug release. Simultaneously, silicon microfabrication techniques have facilitated the development of sophisticated implantable drug-delivery microdevices. This paper reviews the synthesis, novel properties and biomedical applications of silicon–polymer hybrid materials with particular emphasis on drug delivery. The biocompatible and bioresorptive properties of mesoporous silica and porous silicon make these materials attractive candidates for use in biomedical applications. The combination of polymers with silicon-based materials has generated a large range of novel hybrid materials tailored to applications in localized and systemic drug delivery.
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90
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Banerjee SS, Chen DH. A multifunctional magnetic nanocarrier bearing fluorescent dye for targeted drug delivery by enhanced two-photon triggered release. NANOTECHNOLOGY 2009; 20:185103. [PMID: 19420604 DOI: 10.1088/0957-4484/20/18/185103] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We report a novel nanoformulation for targeted drug delivery which utilizes nanophotonics through the fusion of nanotechnology with biomedical application. The approach involves an energy-transferring magnetic nanoscopic co-assembly fabricated of rhodamine B (RDB) fluorescent dye grafted gum arabic modified Fe(3)O(4) magnetic nanoparticle and photosensitive linker by which dexamethasone drug is conjugated to the magnetic nano-assembly. The advantage offered by this nanoformulation is the indirect photo-triggered-on-demand drug release by efficient up-converting energy of the near-IR (NIR) light to higher energy and intraparticle energy transfer from the dye grafted magnetic nanoparticle to the linker for drug release by cleavage. The synthesized nanoparticles were found to be of ultra-small size (13.33 nm) and are monodispersed in an aqueous suspension. Dexamethasone (Dexa) drug conjugated to RDB-GAMNP by photosensitive linker showed appreciable release of Dexa by photo-triggered response on exposure to radiation having a wavelength in the NIR region whereas no detectable release was observed in the dark. Photo-triggered response for the nanoformulation not bearing the rhodamine B dye was drastically less as less Dexa was released on exposure to NIR radiation which suggest that the photo-cleavage of linker and release of Dexa mainly originated from the indirect excitation through the uphill energy conversions based on donor-acceptor model FRET. The promising pathway of nanophotonics for the on-demand release of the drug makes this nanocarrier very promising for applications in nanomedicine.
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Affiliation(s)
- Shashwat S Banerjee
- Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan, Republic of China
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91
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Maurer-Jones MA, Bantz KC, Love SA, Marquis BJ, Haynes CL. Toxicity of therapeutic nanoparticles. Nanomedicine (Lond) 2009; 4:219-41. [PMID: 19193187 DOI: 10.2217/17435889.4.2.219] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
A total of six nanotherapeutic formulations are already approved for medical use and more are in the approval pipeline currently. Despite the massive research effort in nanotherapeutic materials, there is relatively little information about the toxicity of these materials or the tools needed to assess this toxicity. Recently, the scientific community has begun to respond to the paucity of information by investing in the field of nanoparticle toxicology. This review is intended to provide an overview of the techniques needed to assess toxicity of these therapeutic nanoparticles and to summarize the current state of the field. We begin with background on the toxicological assessment techniques used currently as well as considerations in nanoparticle dosing. The toxicological research overview is divided into the most common applications of therapeutic nanoparticles: drug delivery, photodynamic therapy and bioimaging. We end with a perspective section discussing the current technological gaps and promising research aimed at addressing those gaps.
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Affiliation(s)
- Melissa A Maurer-Jones
- University of Minnesota, Department of Chemistry, 207 Pleasant Street SE, Minneapolis, MN 55455, USA
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92
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Targeted delivery with peptidomimetic conjugated self-assembled nanoparticles. Pharm Res 2008; 26:612-30. [PMID: 19085091 DOI: 10.1007/s11095-008-9802-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2008] [Accepted: 12/01/2008] [Indexed: 12/28/2022]
Abstract
Peptides produce specific nanostructures, making them useful for targeting in biological systems but they have low bioavailability, potential immunogenicity and poor metabolic stability. Peptidomimetic self-assembled NPs can possess biological recognition motifs as well as providing desired engineering properties. Inorganic NPs, coated with self-assembled macromers for stability and anti-fouling, and conjugated with target-specific ligands, are advancing imaging from the anatomy-based level to the molecular level. Ligand conjugated NPs are attractive for cell-selective tumor drug delivery, since this process has high transport capacity as well as ligand dependent cell specificity. Peptidomimetic NPs can provide stronger interaction with surface receptors on tumor cells, resulting in higher uptake and reduced drug resistance. Self-assembled NPs conjugated with peptidomimetic antigens are ideal for sustained presentation of vaccine antigens to dendritic cells and subsequent activation of T cell mediated adaptive immune response. Self-assembled NPs are a viable alternative to encapsulation for sustained delivery of proteins in tissue engineering. Cell penetrating peptides conjugated to NPs are used as intracellular delivery vectors for gene expression and as transfection agents for plasmid delivery. In this work, synthesis, characterization, properties, immunogenicity, and medical applications of peptidomimetic NPs in imaging, tumor delivery, vaccination, tissue engineering, and intracellular delivery are reviewed.
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93
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Gaskell EE, Hobbs G, Rostron C, Hutcheon GA. Encapsulation and release ofα-chymotrypsin from poly(glycerol adipate-co-ω-pentadecalactone) microparticles. J Microencapsul 2008; 25:187-95. [DOI: 10.1080/02652040701848775] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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94
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Mercado AE, He X, Xu W, Jabbari E. The release characteristics of a model protein from self-assembled succinimide-terminated poly(lactide-co-glycolide ethylene oxide fumarate) nanoparticles. NANOTECHNOLOGY 2008; 19:325609. [PMID: 21828822 DOI: 10.1088/0957-4484/19/32/325609] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Lactide-co-glycolide-based functionalized nanoparticles (NPs), because of their high surface areas for conjugation and biodegradability, are attractive as carriers for stabilization and sustained delivery of therapeutic agents and protein drugs. The objective of this work was to compare the release characteristics of model molecules encapsulated in NPs produced from poly(lactide-co-glycolide fumarate) (PLGF) macromer with those of model molecules conjugated to NPs produced from succinimide (NHS)-terminated PLGF-NHS macromer. Poly(lactide fumarate) (PLAF), PLGF and poly(lactide-co-ethylene oxide fumarate) (PLEOF) macromers were synthesized by condensation polymerization. The hydroxyl end-groups of PLAF and PLGF macromers were reacted with N,N(')-disuccinimidyl carbonate (DSC) to produce succinimide-terminated PLAF-NHS and PLGF-NHS macromers. The macromers were self-assembled by dialysis to form NPs. The amphiphilic PLEOF macromer was used as the surfactant to stabilize the NPs in the process of self-assembly. 1-(2-pyridylazo)-2-naphthol (PAN) was used as a model small molecule for encapsulation in PLAF or PLGF NPs and bovine serum albumin (BSA) was used as a model protein for conjugation to PLAF-NHS and PLGF-NHS NPs. The profile of release of the encapsulated PAN from PLAF and PLGF NPs was non-linear and consisted of a burst release followed by a period of sustained release. The release profile for BSA, conjugated to PLAF-NHS and PLGF-NHS NPs, was linear up to complete degradation of the NPs. PLGF and PLAF NPs degraded in 15 and 28 days, respectively, while PLGF-NHS and PLAF-NHS NPs degraded in 25 and 38 days, which demonstrated that the release was dominated by erosion of the matrix. PLAF-NHS and PLGF-NHS NPs are potentially useful as carriers for sustained in situ release of protein drugs.
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Affiliation(s)
- Angel E Mercado
- Biomimetic Materials and Tissue Engineering Laboratories, Department of Chemical Engineering, University of South Carolina, SC 29208, Columbia
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95
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Ende AEVD, Kravitz EJ, Harth E. Approach to Formation of Multifunctional Polyester Particles in Controlled Nanoscopic Dimensions. J Am Chem Soc 2008; 130:8706-13. [DOI: 10.1021/ja711417h] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alice E. van der Ende
- Department of Chemistry and Pharmacology, Vanderbilt University, 7619 Stevenson Center, Nashville, Tennessee 37235
| | - Evan J. Kravitz
- Department of Chemistry and Pharmacology, Vanderbilt University, 7619 Stevenson Center, Nashville, Tennessee 37235
| | - Eva Harth
- Department of Chemistry and Pharmacology, Vanderbilt University, 7619 Stevenson Center, Nashville, Tennessee 37235
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96
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Li G, Yao D, Zong M. Lipase-catalyzed synthesis of biodegradable copolymer containing malic acid units in solvent-free system. Eur Polym J 2008. [DOI: 10.1016/j.eurpolymj.2008.01.027] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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97
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Gautrot JE, Zhu XX. High molecular weight bile acid and ricinoleic acid-based copolyesters via entropy-driven ring-opening metathesis polymerisation. Chem Commun (Camb) 2008:1674-6. [DOI: 10.1039/b719021b] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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98
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Drug incorporation and release of water soluble drugs from novel functionalized poly(glycerol adipate) nanoparticles. J Control Release 2007; 125:59-67. [PMID: 18035443 DOI: 10.1016/j.jconrel.2007.09.009] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2007] [Revised: 09/21/2007] [Accepted: 09/29/2007] [Indexed: 11/22/2022]
Abstract
We have previously demonstrated the ability of poly(glycerol adipate) backbone (PGA) and PGA polymer backbone substituted with varying amounts of pendant C(18) chain length acyl groups to yield Dexamethasone phosphate DXMP loaded nanoparticles. The aim of this study was to obtain a deeper understanding of the underlying principles responsible for good drug incorporation and controlled release of drugs from poly (glycerol adipate) (PGA) nanoparticles. We compared the incorporation of the water soluble drugs DXMP and Cytosine arabinoside (CYT-ARA) in both unmodified and substituted PGA polymers. We investigated the effect of change in acyl group chain length and the degree of substitution on the physicochemical properties, drug loading and release of DXMP and CYT-ARA. Nanoparticles were prepared by the interfacial deposition technique and the simultaneous emulsification method. Amongst the nanoparticles prepared using acylated polymers with varying chain lengths (C(2) to C(10)) for DXMP incorporation, polymers with acyl group chain lengths containing 8 carbon atoms (C(8)) showed maximum drug incorporation. Amongst the C(8) series, polymers with 100% acylation provided both good drug incorporation and a controlled release for DXMP while for CYT-ARA it was the unsubstituted polymer backbone that had maximum drug loading and slower release. A number of inter-related factors are responsible for producing particles with particular size, zeta potential, drug loading and release characteristics. Drug loading and release from nanoparticles are primarily influenced by the nature of interactions between the drug and polymers which in turn depend upon the type of drug used and the physical chemistry of the polymer.
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99
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Wolinsky JB, Ray WC, Colson YL, Grinstaff MW. Poly(carbonate ester)s Based on Units of 6-Hydroxyhexanoic Acid and Glycerol. Macromolecules 2007. [DOI: 10.1021/ma071276v] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jesse B. Wolinsky
- Departments of Chemistry and Biomedical Engineering, Boston University, Boston, Massachusetts 02215, and Division of Thoracic Surgery, Department of Surgery, Brigham and Women's Hospital, Boston, Massachusetts 02115
| | - William C. Ray
- Departments of Chemistry and Biomedical Engineering, Boston University, Boston, Massachusetts 02215, and Division of Thoracic Surgery, Department of Surgery, Brigham and Women's Hospital, Boston, Massachusetts 02115
| | - Yolonda L. Colson
- Departments of Chemistry and Biomedical Engineering, Boston University, Boston, Massachusetts 02215, and Division of Thoracic Surgery, Department of Surgery, Brigham and Women's Hospital, Boston, Massachusetts 02115
| | - Mark W. Grinstaff
- Departments of Chemistry and Biomedical Engineering, Boston University, Boston, Massachusetts 02215, and Division of Thoracic Surgery, Department of Surgery, Brigham and Women's Hospital, Boston, Massachusetts 02115
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100
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Garnett MC, Kallinteri P. Nanomedicines and nanotoxicology: some physiological principles. Occup Med (Lond) 2007; 56:307-11. [PMID: 16868128 DOI: 10.1093/occmed/kql052] [Citation(s) in RCA: 185] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Nanosized materials have been investigated as potential medicines for several decades. Consequently, a great deal of work has been conducted on how to exploit constructs of this size range in a beneficial way. Similarly, a number of the consequences from the use of these materials have already been considered. Nanosized materials do behave differently to low-molecular-weight drugs, the biological properties of nanomaterials being mainly dependent on relevant physiology and anatomy, which are reviewed in this article. Biodistribution, movement of materials through tissues, phagocytosis, opsonization and endocytosis of nanosized materials are all likely to have an impact on potential toxicity. In turn these processes are most likely to depend on the nanoparticle surface. Evidence from the literature is considered which suggests that our understanding of these areas is incomplete, and that biodistribution to specific sites can occur for nanoparticles with particular characteristics. However, our current knowledge does indicate which areas are of concern and deserve further investigation to understand how individual nanoparticles behave and what toxicity may be expected from them.
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Affiliation(s)
- M C Garnett
- School of Pharmacy, University of Nottingham, University Park, Nottingham NG7 2RD, UK.
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