1
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Length-scale dependence of pH- and temperature-response of PDMAEMA-b-PHPMA block copolymer self-assemblies in aqueous solutions. POLYMER 2022. [DOI: 10.1016/j.polymer.2021.124428] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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2
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Siepmann J, Faham A, Clas SD, Boyd BJ, Jannin V, Bernkop-Schnürch A, Zhao H, Lecommandoux S, Evans JC, Allen C, Merkel OM, Costabile G, Alexander MR, Wildman RD, Roberts CJ, Leroux JC. Lipids and polymers in pharmaceutical technology: Lifelong companions. Int J Pharm 2019; 558:128-142. [PMID: 30639218 DOI: 10.1016/j.ijpharm.2018.12.080] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 12/22/2018] [Accepted: 12/24/2018] [Indexed: 02/06/2023]
Abstract
In pharmaceutical technology, lipids and polymers are considered pillar excipients for the fabrication of most dosage forms, irrespective of the administration route. They play various roles ranging from support vehicles to release rate modifiers, stabilizers, solubilizers, permeation enhancers and transfection agents. Focusing on selected applications, which were discussed at the Annual Scientific Meeting of the Gattefossé Foundation 2018, this manuscript recapitulates the fundamental roles of these two important classes of excipients, either employed alone or in combination, and provides insight on their functional properties in various types of drug formulations. Emphasis is placed on oral formulations for the administration of active pharmaceutical ingredients with low aqueous solubilities or poor permeation properties. Additionally, this review article covers the use of lipids and polymers in the design of colloidal injectable delivery systems, and as substrates in additive manufacturing technologies for the production of tailor-made dosage forms.
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Affiliation(s)
- Juergen Siepmann
- University of Lille, Inserm, CHU Lille, U1008, 59000 Lille, France
| | - Amina Faham
- DuPont Health & Nutrition (formerly Dow Pharma Solutions), 8810 Horgen, Switzerland
| | | | - Ben J Boyd
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
| | | | - Andreas Bernkop-Schnürch
- University of Innsbruck, Institute of Pharmacy, Center for Chemistry and Biomedicine, 6020 Innsbruck, Austria
| | - Hang Zhao
- Laboratoire de Chimie des Polymères Organiques LCPO, UMR 5629 CNRS, Université de Bordeaux, Bordeaux-INP, 33600 Pessac, France
| | - Sébastien Lecommandoux
- Laboratoire de Chimie des Polymères Organiques LCPO, UMR 5629 CNRS, Université de Bordeaux, Bordeaux-INP, 33600 Pessac, France
| | - James C Evans
- Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, ON M5S 3M2, Canada
| | - Christine Allen
- Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, ON M5S 3M2, Canada
| | - Olivia M Merkel
- Department of Pharmacy, Pharmaceutical Technology and Biopharmacy, Ludwig-Maximilians-Universität München, 81377 Munich, Germany
| | - Gabriella Costabile
- Department of Pharmacy, Pharmaceutical Technology and Biopharmacy, Ludwig-Maximilians-Universität München, 81377 Munich, Germany
| | - Morgan R Alexander
- Advanced Materials and Healthcare Technologies, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK
| | - Ricky D Wildman
- Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK
| | - Clive J Roberts
- Advanced Materials and Healthcare Technologies, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK
| | - Jean-Christophe Leroux
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland.
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3
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Hussein YHA, Youssry M. Polymeric Micelles of Biodegradable Diblock Copolymers: Enhanced Encapsulation of Hydrophobic Drugs. MATERIALS 2018; 11:ma11050688. [PMID: 29702593 PMCID: PMC5978065 DOI: 10.3390/ma11050688] [Citation(s) in RCA: 102] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 04/20/2018] [Accepted: 04/24/2018] [Indexed: 12/26/2022]
Abstract
Polymeric micelles are potentially efficient in encapsulating and performing the controlled release of various hydrophobic drug molecules. Understanding the fundamental physicochemical properties behind drug⁻polymer systems in terms of interaction strength and compatibility, drug partition coefficient (preferential solubilization), micelle size, morphology, etc., encourages the formulation of polymeric nanocarriers with enhanced drug encapsulating capacity, prolonged circulation time, and stability in the human body. In this review, we systematically address some open issues which are considered to be obstacles inhibiting the commercial availability of polymer-based therapeutics, such as the enhancement of encapsulation capacity by finding better drug⁻polymer compatibility, the drug-release kinetics and mechanisms under chemical and mechanical conditions simulating to physiological conditions, and the role of preparation methods and solvents on the overall performance of micelles.
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Affiliation(s)
- Yasser H A Hussein
- Department of Chemistry and Earth Sciences, College of Arts and Sciences, Qatar University, Doha 2713, Qatar.
| | - Mohamed Youssry
- Department of Chemistry and Earth Sciences, College of Arts and Sciences, Qatar University, Doha 2713, Qatar.
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4
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Huang Z, Chen Y, Liu D, Lu C, Shen Z, Zhong S, Shi G. Gadolinium-conjugated star-block copolymer polylysine-modified polyethylenimine as high-performance T 1 MR imaging blood pool contrast agents. RSC Adv 2018; 8:5005-5012. [PMID: 35539565 PMCID: PMC9078030 DOI: 10.1039/c7ra08820e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 12/11/2017] [Indexed: 02/06/2023] Open
Abstract
Core-shell copolymers have received widespread attention because of their unique properties, such as suitable for surface modification and increasing the functionality. Thus, they have been increasingly used in many fields including biomedical, pharmaceutical, electronics and optics. Here, a new core-shell copolymer system was developed to synthesize potential blood pool contrast agent (CA) for magnetic resonance imaging (MRI). The novel CA with high T 1 relaxivity was synthesized by conjugating gadolinium (Gd) chelators onto star-block copolymer polyethylenimine-grafted poly(l-lysine) (PEI-PLL) nanoparticles (NPs). The T 1 relaxivity of PEI-PLL-DTPA-Gd NPs measured on a 7.0 T small animal MRI scanner was 8.289 mM-1 s-1, higher than that of T 1 contrast agents widely used in the clinic, such as Gd-DTPA (also known as Magnevist, r 1 = 4.273 mM-1 s-1). These results show that PEI-PLL-DTPA-Gd exhibits more efficient T 1 MR contrast enhancement compared to Gd-DTPA. More importantly, the PEI-PLL-DTPA-Gd core-shell NPs exhibited extremely low toxicity when measured against the HepG2 cell line over a similar concentration rang of Magnevist. In in vivo experiments, PEI-PLL-DTPA-Gd not only displayed good T 1 contrast enhancement for the abdominal aorta, but also showed prolonged blood circulation time compared with Gd-DTPA, which should enable longer acquisition time, for MR and MR angiographic images, with high resolution in clinical practice. PEI-PLL-DTPA-Gd NPs have potential to serve as high T 1 relaxivity blood pool MRI CA in the clinic.
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Affiliation(s)
- Zhongjie Huang
- Department of Radiology, The First Affiliated Hospital, Shantou University Medical College Shantou 515041 China
| | - Yicun Chen
- Department of Pharmacology, Shantou University Medical College Shantou 515041 China
| | - Daojun Liu
- Department of Chemistry, Shantou University Medical College Shantou 515041 China
| | - Chao Lu
- Department of Chemistry, Shantou University Medical College Shantou 515041 China
| | - Zhiwei Shen
- Department of Radiology, The Second Affiliated Hospital, Shantou University Medical College Shantou 515041 China
| | - Shuping Zhong
- Department of Biochemistry and Molecular Biology, Keck School of Medicine, University of Southern California Los Angeles California 90033 USA
| | - Ganggang Shi
- Department of Pharmacology, Shantou University Medical College Shantou 515041 China
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5
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Zhang Q, Vakili MR, Li XF, Lavasanifar A, Le XC. Terpolymer Micelles for the Delivery of Arsenic to Breast Cancer Cells: The Effect of Chain Sequence on Polymeric Micellar Characteristics and Cancer Cell Uptake. Mol Pharm 2016; 13:4021-4033. [DOI: 10.1021/acs.molpharmaceut.6b00362] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Qi Zhang
- Faculty
of Medicine and Dentistry, Department of Laboratory Medicine and Pathology,
Division of Analytical and Environmental Toxicology, University of Alberta, Edmonton, Alberta T6G 2G3, Canada
| | - Mohammad Reza Vakili
- Faculty
of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - Xing-Fang Li
- Faculty
of Medicine and Dentistry, Department of Laboratory Medicine and Pathology,
Division of Analytical and Environmental Toxicology, University of Alberta, Edmonton, Alberta T6G 2G3, Canada
| | - Afsaneh Lavasanifar
- Faculty
of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - X. Chris Le
- Faculty
of Medicine and Dentistry, Department of Laboratory Medicine and Pathology,
Division of Analytical and Environmental Toxicology, University of Alberta, Edmonton, Alberta T6G 2G3, Canada
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6
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Gonzalez-Fajardo L, Mahajan LH, Ndaya D, Hargrove D, Manautou JE, Liang BT, Chen MH, Kasi RM, Lu X. Reduced in vivo toxicity of doxorubicin by encapsulation in cholesterol-containing self-assembled nanoparticles. Pharmacol Res 2016; 107:93-101. [PMID: 26976795 DOI: 10.1016/j.phrs.2016.03.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 02/17/2016] [Accepted: 03/08/2016] [Indexed: 12/11/2022]
Abstract
We previously reported the development of an amphiphilic brush-like block copolymer composed of polynorbornene-cholesterol/polyethylene glycol (P(NBCh9-b-NBPEG)) that self-assembles in aqueous media to form long circulating nanostructures capable of encapsulating doxorubicin (DOX-NPs). Biodistribution studies showed that this formulation preferentially accumulates in tumor tissue with markedly reduced accumulation in the heart and other major organs. The aim of the current study was to evaluate the in vivo efficacy and toxicity of DOX containing self-assembled polymer nanoparticles in a mouse xenograft tumor model and compare its effects with the hydrochloride non-encapsulated form (free DOX). DOX-NPs significantly reduced the growth of tumors without inducing any apparent toxicity. Conversely, mice treated with free DOX exhibited significant weight loss, early toxic cardiomyopathy, acute toxic hepatopathy, reduced hematopoiesis and fatal toxicity. The improved safety profile of the polymeric DOX-NPs can be explained by the low circulating concentration of non-nanoparticle-associated drug as well as the reduced accumulation of DOX in non-target organs. These findings support the use of P(NBCh9-b-NBPEG) nanoparticles as delivery platforms for hydrophobic anticancer drugs intended to reduce the toxicity of conventional treatments.
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Affiliation(s)
| | - Lalit H Mahajan
- Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA
| | - Dennis Ndaya
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA
| | - Derek Hargrove
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269, USA
| | - José E Manautou
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269, USA
| | - Bruce T Liang
- Pat and Jim Calhoun Cardiology Center, University of Connecticut School of Medicine, Farmington, CT 06030, USA
| | - Ming-Hui Chen
- Department of Statistics, University of Connecticut, Storrs, CT 06269, USA
| | - Rajeswari M Kasi
- Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA; Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA
| | - Xiuling Lu
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269, USA.
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7
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Alibolandi M, Sadeghi F, Sazmand SH, Shahrokhi SM, Seifi M, Hadizadeh F. Synthesis and self-assembly of biodegradable polyethylene glycol-poly (lactic acid) diblock copolymers as polymersomes for preparation of sustained release system of doxorubicin. Int J Pharm Investig 2015; 5:134-41. [PMID: 26258054 PMCID: PMC4522862 DOI: 10.4103/2230-973x.160846] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Introduction: The copolymer of polyethylene glycol (PEG) and polyesters has many interesting properties, such as amphiphilicity, biocompatibility, biodegradability, and self-assembly in an aqueous environment. Diblock copolymers of PEG-polyester can form different structures such as micelles, polymersome, capsules or micro-container in an aqueous environment according to the length of their blocks. Materials and Methods: Herein, a series of poly (lactic acid) (PLA) and PEG diblock copolymers were synthesized through the ring-opening polymerization. The polymerization reaction and the copolymer structures were evaluated by nuclear magnetic resonance (NMR) and gel permeation chromatography (GPC). The corresponding copolymers were implemented for the formation of polymersome structures using film rehydration method. Impact of methoxy PEG chain length and hydrophobic weight fraction on particle size of polymersomes were studied, and the proper ones were selected for loading of doxorubicin (DOX) via pH gradient method. Results and Discussion: Results obtained from 1HNMR and GPC revealed that microwave irradiation is a simple and reliable method for the synthesis of PEG-PLA copolymers. Further analysis indicated the copolymer with relative molecular weight of PLA to PEG ratios of 3 or fEo ~ 25% produced the smallest size polymersomes. Polymersomes prepared from PEG5000 to PLA15000 were more capable in loading and sustained release of DOX than those prepared from PEG2000 to PLA6000. Conclusion: In conclusion copolymers of PEG/PLA with fOE ~25% and relatively higher molecular weight are more suitable for encapsulation and providing sustained release of DOX.
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Affiliation(s)
- Mona Alibolandi
- Biotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Fatemeh Sadeghi
- Targeted Drug Delivery Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed Hossein Sazmand
- Student Research Committee, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed Mohammad Shahrokhi
- Targeted Drug Delivery Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahmoud Seifi
- Biotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Farzin Hadizadeh
- Biotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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8
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Agrawal U, Gupta M, Jadon RS, Sharma R, Vyas SP. Multifunctional nanomedicines: potentials and prospects. Drug Deliv Transl Res 2015; 3:479-97. [PMID: 25788355 DOI: 10.1007/s13346-012-0123-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Nanotechnology is considered to be significant innovative revolution that have found wide spectrum of applications in the fields ranging from medicine, diagnostics, electronics, and communications. Currently used pharmaceutical nanocarriers, such as dendrimers, micelles, nanoparticles, polymeric nanoparticles, microspheres, and many of the nanocarriers particularly in the area of drug delivery, offer a wide variety of useful properties, such as longevity in the blood allowing for their accumulation in pathological areas particularly those with compromised vasculature; specific targeting to certain disease sites; enhanced intracellular penetration of nanomaterial with contrast properties allowing for the direct visualization of carrier in vivo, and stimuli sensitivity allowing for triggered drug release from the carriers under certain physiological conditions. Some of the pharmaceutical carriers have already made their way into clinic, while others are still under preclinical development. Moreover, the engineering of multifunctional nanocarriers with several useful properties can significantly enhance the efficacy of many therapeutic and diagnostic protocols. These novel materials operate at the nanoscale range and provide new and powerful cutting edge tools for imaging, diagnosis, and therapy. This review considers current standing and possible future directions in the emerging area of multifunctional nanocarriers with primary attention on the combination of such properties as longevity, targetability, intracellular penetration, and contrast loading.
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Affiliation(s)
- Udita Agrawal
- Drug Delivery Research Laboratory, Department of Pharmaceutical Sciences, Dr. H. S. Gour Vishwavidyalaya, Sagar, Madhya Pradesh, 470003, India
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9
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Kakkar D, Mazzaferro S, Thevenot J, Schatz C, Bhatt A, Dwarakanath BS, Singh H, Mishra AK, Lecommandoux S. Amphiphilic PEO-b
-PBLG Diblock and PBLG-b
-PEO-b
-PBLG Triblock Copolymer Based Nanoparticles: Doxorubicin Loading and In Vitro
Evaluation. Macromol Biosci 2014; 15:124-37. [DOI: 10.1002/mabi.201400451] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 11/06/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Dipti Kakkar
- Université de Bordeaux/Bordeaux-INP; ENSCBP CNRS, Laboratoire de Chimie des Polymères Organiques (UMR5629); 16 avenue Pey Berland 33607 Pessac Cedex France
- Institute of Nuclear Medicine and Allied Sciences; Brig. S.K. Mazumdar Road Timarpur Delhi 110054 India
- Centre for Biomedical Engineering; Indian Institute of Technology; Hauz Khas New Delhi 110016 India
- CNRS; Laboratoire de Chimie des Polymeres Organiques (UMR5629); Pessac France
| | - Silvia Mazzaferro
- Université de Bordeaux/Bordeaux-INP; ENSCBP CNRS, Laboratoire de Chimie des Polymères Organiques (UMR5629); 16 avenue Pey Berland 33607 Pessac Cedex France
- CNRS; Laboratoire de Chimie des Polymeres Organiques (UMR5629); Pessac France
| | - Julie Thevenot
- Université de Bordeaux/Bordeaux-INP; ENSCBP CNRS, Laboratoire de Chimie des Polymères Organiques (UMR5629); 16 avenue Pey Berland 33607 Pessac Cedex France
- CNRS; Laboratoire de Chimie des Polymeres Organiques (UMR5629); Pessac France
| | - Christophe Schatz
- Université de Bordeaux/Bordeaux-INP; ENSCBP CNRS, Laboratoire de Chimie des Polymères Organiques (UMR5629); 16 avenue Pey Berland 33607 Pessac Cedex France
- CNRS; Laboratoire de Chimie des Polymeres Organiques (UMR5629); Pessac France
| | - Anant Bhatt
- Institute of Nuclear Medicine and Allied Sciences; Brig. S.K. Mazumdar Road Timarpur Delhi 110054 India
| | - Bilikere S. Dwarakanath
- Institute of Nuclear Medicine and Allied Sciences; Brig. S.K. Mazumdar Road Timarpur Delhi 110054 India
| | - Harpal Singh
- Centre for Biomedical Engineering; Indian Institute of Technology; Hauz Khas New Delhi 110016 India
| | - Anil K. Mishra
- Institute of Nuclear Medicine and Allied Sciences; Brig. S.K. Mazumdar Road Timarpur Delhi 110054 India
| | - Sebastien Lecommandoux
- Université de Bordeaux/Bordeaux-INP; ENSCBP CNRS, Laboratoire de Chimie des Polymères Organiques (UMR5629); 16 avenue Pey Berland 33607 Pessac Cedex France
- CNRS; Laboratoire de Chimie des Polymeres Organiques (UMR5629); Pessac France
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10
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Legros C, Wirotius AL, De Pauw-Gillet MC, Tam KC, Taton D, Lecommandoux S. Poly(2-oxazoline)-based nanogels as biocompatible pseudopolypeptide nanoparticles. Biomacromolecules 2014; 16:183-91. [PMID: 25409266 DOI: 10.1021/bm501393q] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Hydrophilic nanogels based on partially hydrolyzed poly(2-ethyl-2-oxazoline) were synthesized in dilute aqueous media in the presence of 1,6-hexanediol diglycidyl ether as a cross-linker. Nanogel formation was monitored by DLS and HSQC NMR spectroscopy, and the final nano-objects were characterized by DLS, TEM, AFM, and NanoSight analyses. Nanogels with a hydrodynamic radius of 78 nm exhibiting a slight positive surface charge were obtained. MTS assays (cell metabolic activity test) evidenced that nanogels were nontoxic in the investigated concentration range (i.e., 0.1 to 400 μg/mL) and that no specific interaction with bovine serum albumin was observed.
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Affiliation(s)
- Camille Legros
- Université de Bordeaux , UMR5629, ENSCPB, 16 Avenue Pey Berland, 33607 Pessac Cedex, France
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11
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Lee J, Kim M, Jin SJ, Lee H, Kwon YK, Park HJ, Kim C. Intracellular release of anticancer agents from a hollow silica nanocontainer with glutathione-responsive cyclodextrin gatekeepers. NEW J CHEM 2014. [DOI: 10.1039/c4nj01161a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Iatrou H, Dimas K, Gkikas M, Tsimblouli C, Sofianopoulou S. Polymersomes from polypeptide containing triblock Co- and terpolymers for drug delivery against pancreatic cancer: asymmetry of the external hydrophilic blocks. Macromol Biosci 2014; 14:1222-38. [PMID: 24838730 DOI: 10.1002/mabi.201400137] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Revised: 04/13/2014] [Indexed: 11/09/2022]
Abstract
Well-defined amphiphilic polymers of the ABA and ABC type are synthesized, where A is poly(L-lysine hydrochloride) (PLL), B is poly(γ-benzyl-(d7) L-glutamate) (PBLG(-d7)), and C is poly(ethylene oxide) (PEO). The two polymers exhibit similar PBLG(-d7) composition, while in the ABC, the volume fraction of PEO block is higher than that of PLL. Both polymers form polymersomes in water. The polymersomes are loaded with doxorubicin or paclitaxel. It is found that in the ABC, due to asymmetry of the two hydrophilic blocks, PEO is always on the outer periphery and the dimensions of the vesicles are smaller. The release of the vesicles is temperature- and pH-dependent. In vivo toxicity tests of the empty vesicles show that they are not toxic. In vitro activity of the loaded vesicles against human pancreatic cancer cell lines reveals comparable activity to Myocet for the ABA loaded with doxorubicin, while lower activity is observed for the ABC.
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Affiliation(s)
- Hermis Iatrou
- University of Athens, Chemistry Department, Panepistimiopolis, Zografou, 15771, Athens, Greece
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13
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Tavano L, Aiello R, Ioele G, Picci N, Muzzalupo R. Niosomes from glucuronic acid-based surfactant as new carriers for cancer therapy: preparation, characterization and biological properties. Colloids Surf B Biointerfaces 2014; 118:7-13. [PMID: 24709252 DOI: 10.1016/j.colsurfb.2014.03.016] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 03/05/2014] [Accepted: 03/06/2014] [Indexed: 10/25/2022]
Abstract
Niosomes are vesicular systems composed of surfactant molecules, claimed to be used as drug delivery carriers thanks to their physico-chemical and biological properties. The aim of this work was to design niosomes obtained with a surfactant synthesized from glucuronic acid. Doxorubicin and 5FU were used as model drugs. Niosomes were prepared with different ratios between surfactant and cholesterol, and characterized in terms of size, morphology, drugs entrapment efficiency and in vitro releases, to identify the optimal formulation to be used in pharmaceutical fields. In addition, the hemolytic activity of all formulations have been also evaluated. Results showed that dodecylglucuronamide surfactant was able to produce vesicular systems with or without the presence of cholesterol. Niosomes resulted regular in size and shape and they have been found to encapsulate and release in a controlled manner both doxorubicin and 5-fluorouracil. Hemolytic tests showed that the capability of disrupting erythrocyte only depend on the size of colloidal aggregates. Finally, our formulations could be potentially used as antitumoral delivery systems in anticancer therapy.
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Affiliation(s)
- Lorena Tavano
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione, Università della Calabria, Edificio Polifunzionale, Arcavacata di Rende, 87036 Cosenza, Italy; Dipartimento di Ingegneria Informatica, Modellistica, Elettronica e Sistemistica, Università della Calabria, Via P. Bucci Cubo 39/C, Arcavacata di Rende, 87036 Cosenza, Italy
| | - Rossana Aiello
- Dipartimento di Scienze della Salute, Università Magna Graecia, Via T. Campanella 115, 88100 Catanzaro, Italy
| | - Giuseppina Ioele
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione, Università della Calabria, Edificio Polifunzionale, Arcavacata di Rende, 87036 Cosenza, Italy
| | - Nevio Picci
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione, Università della Calabria, Edificio Polifunzionale, Arcavacata di Rende, 87036 Cosenza, Italy
| | - Rita Muzzalupo
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione, Università della Calabria, Edificio Polifunzionale, Arcavacata di Rende, 87036 Cosenza, Italy.
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14
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Pothayee N, Pothayee N, Hu N, Zhang R, Kelly DF, Koretsky AP, Riffle JS. Manganese graft ionomer complexes (MaGICs) for dual imaging and chemotherapy. J Mater Chem B 2014; 2:1087-1099. [PMID: 32261626 DOI: 10.1039/c3tb21299h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Novel manganese graft ionomer complexes (MaGICs) that contain Mn ions complexed with a polyaminobisphosphonate-g-poly(ethylene oxide) (PEO) copolymer were developed for use as T1-weighted contrast agents for MRI. The complexes exhibited good colloidal stability without release of free manganese and did not result in any in vitro toxicity against mouse hepatocytes. T1 relaxivities of the MaGICs at physiological pH were 2-10 times higher than that of a commercial manganese-based positive contrast agent. Anticancer drugs including doxorubicin, cisplatin and carboplatin were successfully encapsulated into the MaGICs with high efficiency. Drug release behavior was sustained and depended on pH (faster in acidic environments), drug structures and drug concentration (faster with high concentration). The anticancer drug-loaded manganese nanocarriers exhibited excellent anticancer activity against MCF-7 breast cancer cells together with high relaxivity. Thus, these drug-loaded MaGICs could potentially be utilized for simultaneous diagnosis and treatment of cancer.
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Affiliation(s)
- Nipon Pothayee
- Macromolecules and Interfaces Institute, Virginia Tech, 145 ICTAS 1, Blacksburg, VA 24061, USA.
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15
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De Nicola A, Hezaveh S, Zhao Y, Kawakatsu T, Roccatano D, Milano G. Micellar drug nanocarriers and biomembranes: how do they interact? Phys Chem Chem Phys 2014; 16:5093-105. [DOI: 10.1039/c3cp54242d] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Upponi JR, Torchilin VP. Passive vs. Active Targeting: An Update of the EPR Role in Drug Delivery to Tumors. NANO-ONCOLOGICALS 2014. [DOI: 10.1007/978-3-319-08084-0_1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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17
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Yang J, Hou Y, Ji G, Song Z, Liu Y, Dai G, Zhang Y, Chen J. Targeted delivery of the RGD-labeled biodegradable polymersomes loaded with the hydrophilic drug oxymatrine on cultured hepatic stellate cells and liver fibrosis in rats. Eur J Pharm Sci 2013; 52:180-90. [PMID: 24296297 DOI: 10.1016/j.ejps.2013.11.017] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2013] [Revised: 11/21/2013] [Accepted: 11/24/2013] [Indexed: 01/06/2023]
Abstract
Oxymatrine (OM) is an alkaloid extracted from a Chinese herb that has been found to possess an anti-hepatic fibrosis effect, although its anti-fibrotic potential is limited due to a lack of targeting specificity, a short half-life and adverse effects. Polymersomes (PM) assembled from amphiphilic block copolymers represent promising vesicles for applications that include drug delivery and surface functionalization. The aim of this study was to develop a novel drug carrier based on PM modified with the peptide RGD and evaluate its therapeutic effect on liver fibrosis. A series of PM based on poly(ethylene glycol)-b-poly(ε-caprolactone) (PEG-b-PCL) were prepared and characterized. OM was loaded into PM by a pH-gradient method then the OM-loaded PM was modified with RGD peptide to obtain RGD-PM-OM. The average drug loading of RGD-PM-OM, with a size of 95 nm, was 6.8%. The targeting effects of the system were determined in cultured hepatic stellate cells (HSCs) and bile duct-ligated rats (BLD). RGD-PM-OM displayed better suppression of HSCs proliferation and significantly reduced the expression of the genes for α-SMA and collagen lα1 in cultured HSCs. Furthermore, RGD-PM-OM exhibited markedly superior anti-fibrosis activity by reducing the levels of PC-III and IV-C in serum and connective tissue deposition in BLD compared with PM-OM and OM. These results indicate that targeted RGD-PM-OM markedly attenuates the effects of hepatic fibrosis.
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Affiliation(s)
- Jianhong Yang
- Department of Pharmaceutical Science, Nanfang Hospital, Southern Medical University, No. 1838 Guangzhou Ave., Guangzhou 510515, PR China; Department of Pharmaceutics, School of Pharmacy, Ningxia Medical University, No. 1160 Shengli South Street, Yinchuan 750004, PR China
| | - Yanhui Hou
- Department of Pharmaceutics, School of Pharmacy, Ningxia Medical University, No. 1160 Shengli South Street, Yinchuan 750004, PR China
| | - Gangjian Ji
- Department of Pharmaceutical Science, Nanfang Hospital, Southern Medical University, No. 1838 Guangzhou Ave., Guangzhou 510515, PR China
| | - Zhihua Song
- Department of Pharmaceutical Science, Nanfang Hospital, Southern Medical University, No. 1838 Guangzhou Ave., Guangzhou 510515, PR China
| | - Yanhua Liu
- Department of Pharmaceutics, School of Pharmacy, Ningxia Medical University, No. 1160 Shengli South Street, Yinchuan 750004, PR China
| | - Guidong Dai
- Department of Pharmaceutics, School of Pharmacy, Ningxia Medical University, No. 1160 Shengli South Street, Yinchuan 750004, PR China
| | - Yajun Zhang
- College of Life Sciences of Northwest University, No. 229 Taibai North Road, Xian 710069, PR China
| | - Jianhai Chen
- Department of Pharmaceutical Science, Nanfang Hospital, Southern Medical University, No. 1838 Guangzhou Ave., Guangzhou 510515, PR China.
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Tavano L, Muzzalupo R, Mauro L, Pellegrino M, Andò S, Picci N. Transferrin-conjugated pluronic niosomes as a new drug delivery system for anticancer therapy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:12638-46. [PMID: 24040748 DOI: 10.1021/la4021383] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
An efficient tumor-targeted niosomal delivery system for the vehiculation of doxorubicin hydrochloride as an anticancer agent was designed. Niosomes were prepared from a mixture of an opportunely modified Pluronic L64 surfactant and cholesterol as a membrane additive and characterized in terms of size and related distribution function and drug entrapment efficiency. After the preparation, transferrin was conjugated to niosomes to produce transferrin (Tf) niosomes, and the cytotoxicity of the final formulation was studied. The specific uptake of Tf niosomes into cells was evaluated via incubation of MCF-7 and MDA-MB-231 cells with fluorescently rhodamine-loaded Tf niosomes for various times and concentration intervals and further investigated by fluorescence microscopy. Results showed that doxorubicin can be easily encapsulated into niosomes, which are regular and spherical in shape. Moreover, transferrin conjugate niosomes demonstrated far greater extents of cellular uptake by MCF-7 and MDA-MB-231 cells, suggesting that they were mainly taken up by transferrin receptor-mediated endocytosis. Doxorubicin-loaded niosome anticancer activity was also achieved against MCF-7 and MDA-MB-231 tumor cell lines, and a significant reduction in viability in a dose- and time-related manner was observed. Finally, our formulation could be potentially useful as a target doxorubicin delivery system in anticancer therapy.
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Affiliation(s)
- Lorena Tavano
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione, Università della Calabria , Edificio Polifunzionale, 87036 Arcavacata di Rende, Cosenza, Italy
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Jabbari E, Yang X, Moeinzadeh S, He X. Drug release kinetics, cell uptake, and tumor toxicity of hybrid VVVVVVKK peptide-assembled polylactide nanoparticles. Eur J Pharm Biopharm 2012; 84:49-62. [PMID: 23275111 DOI: 10.1016/j.ejpb.2012.12.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Revised: 12/09/2012] [Accepted: 12/12/2012] [Indexed: 12/16/2022]
Abstract
An exciting approach to tumor delivery is encapsulation of the drug in self-assembled polymer-peptide nanoparticles. The objective of this work was to synthesize a conjugate of low molecular weight polylactide (LMW PLA) and V6K2 peptide and investigate self-assembly, drug release kinetics, cell uptake and toxicity, drug pharmacokinetics, and tumor cell invasion with Doxorubicin (DOX) or paclitaxel (PTX). The results for PLA-V6K2 self-assembled NPs were compared with those of polyethylene glycol stabilized PLA (PLA-EG) NPs. The size of PLA-V6K2 and PLA-EG NPs was 100 ± 20 and 130 ± 50 nm, respectively, with polydispersity index of 1.04 and 1.14. The encapsulation efficiency of DOX in PLA-V6K2 and PLA-EG NPs was 44 ± 9% and 55 ± 5%, respectively, and that of PTX was >90 for both NP types. The release of DOX and PTX from PLA-V6K2 was slower than that of PLA-EG, and the release rate was relatively constant with time. Based on molecular dynamic simulation, the less hydrophobic DOX was distributed in the lactide core as well as the peptide shell, while the hydrophobic PTX was localized mainly to the lactide core. PLA-V6K2 NPs had significantly higher cell uptake by 4T1 mouse breast carcinoma cells compared to PLA-EG NPs, which was attributed to the electrostatic interactions between the peptide and negatively charged moieties on the cell membrane. PLA-V6K2 NPs showed no toxicity to marrow stromal cells. DOX-loaded PLA-V6K2 NPs showed higher toxicity to 4T1 cells and the DNA damage response, and apoptosis was delayed compared to the free DOX. DOX or PTX encapsulated in PLA-V6K2 NPs significantly reduced invasion of 4T1 cells compared to those cells treated with the drug in PLA-EG NPs. Invasion of 4T1 cells treated with DOX in PLA-V6K2 and PLA-EG NPs was 5 ± 1% and 30 ± 5%, respectively, and that of PTX was 11 ± 2% and 40 ± 7%. The AUC of DOX in PLA-V6K2 NPs was 67% and 21% higher than those of free DOX and PLA-EG NPs, respectively. DOX-loaded PLA-V6K2 NPs injected in C3HeB/FeJ mice inoculated with MTCL syngeneic breast cancer cells displayed higher tumor toxicity than PLA-EG NPs and lower host toxicity than the free DOX. Cationic PLA-V6K2 NPs with higher tumor toxicity than the PLA-EG NPs are potentially useful in chemotherapy.
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Affiliation(s)
- Esmaiel Jabbari
- Department of Chemical Engineering, University of South Carolina, SC 29208, United States.
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20
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Shahbazi MA, Hamidi M. The impact of preparation parameters on typical attributes of chitosan-heparin nanohydrogels: particle size, loading efficiency, and drug release. Drug Dev Ind Pharm 2012; 39:1774-82. [DOI: 10.3109/03639045.2012.736518] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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21
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Sun L, Du J. Revisiting the time for removing the unloaded drug by dialysis method based on a biocompatible and biodegradable polymer vesicle. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.03.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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22
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23
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Upadhyay KK, Mishra AK, Chuttani K, Kaul A, Schatz C, Le Meins JF, Misra A, Lecommandoux S. The in vivo behavior and antitumor activity of doxorubicin-loaded poly(γ-benzyl l-glutamate)-block-hyaluronan polymersomes in Ehrlich ascites tumor-bearing BalB/c mice. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2012; 8:71-80. [DOI: 10.1016/j.nano.2011.05.008] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2010] [Revised: 03/29/2011] [Accepted: 05/18/2011] [Indexed: 02/02/2023]
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Affiliation(s)
- Ruth Duncan
- Polymer Therapeutics Lab., Centro de Investigación Príncipe Felipe, Av. Autopista del Saler 16 E-46012, Valencia, Spain
| | - Rogerio Gaspar
- Nanomedicine & Drug Delivery Systems Group, iMed, Faculty of Pharmacy of the University of Lisbon, Av. Prof Gama Pinto, 1649-003 Lisbon, Portugal
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25
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Ukawala M, Chaudhari K, Rajyaguru T, Manjappa A, Murthy R, Gude R. Laminin receptor-targeted etoposide loaded polymeric micelles: a novel approach for the effective treatment of tumor metastasis. J Drug Target 2011; 20:55-66. [DOI: 10.3109/1061186x.2011.610799] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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26
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Perro A, Nicolet C, Angly J, Lecommandoux S, Le Meins JF, Colin A. Mastering a double emulsion in a simple co-flow microfluidic to generate complex polymersomes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:9034-42. [PMID: 21082804 DOI: 10.1021/la1037102] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
We show that the production and the geometrical shape of complex polymersomes can be predicted by varying the flow rates of a simple microdevice using an empirical law which predicts the droplet size. This device is constituted of fused silica capillaries associated with adjusted tubing sleeves and T-junctions. Studying the effect of several experimental parameters, double emulsions containing a controlled number of droplets were fabricated. First, this study examines the stability of a jet in a simple confined microfluidic system, probing the conditions required for droplets production. Then, multicompartmental polymersomes were formed, controlling flow velocities. In this work, poly(dimethylsiloxane)-graft-poly(ethylene oxide) (PDMS-g-PEO) and poly(butadiene)-block-poly(ethyleneoxide) (PBut-b-PEO) amphiphilic copolymers were used and dissolved in chloroform/cyclohexane mixture. The ratio of these two solvents was adjusted in order to stabilize the double emulsion formation. The aqueous suspension contained poly(vinyl alcohol) (PVA), limiting the coalescence of the droplets. This work constitutes major progress in the control of double emulsion formation in microfluidic devices and shows that complex structures can be obtained using such a process.
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Affiliation(s)
- Adeline Perro
- Rhodia Laboratoire du Futur, Unité mixte Rhodia-CNRS, Université Bordeaux I, Bordeaux, France
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27
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Pang Z, Gao H, Yu Y, Guo L, Chen J, Pan S, Ren J, Wen Z, Jiang X. Enhanced Intracellular Delivery and Chemotherapy for Glioma Rats by Transferrin-Conjugated Biodegradable Polymersomes Loaded with Doxorubicin. Bioconjug Chem 2011; 22:1171-80. [DOI: 10.1021/bc200062q] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Zhiqing Pang
- Department of Pharmaceutics, School of Pharmacy, Fudan University, Shanghai, People’s Republic of China, 201203
- Key Laboratory of Smart Drug Delivery, Ministry of Education & PLA, People’s Republic of China, 201203
| | - Huile Gao
- Department of Pharmaceutics, School of Pharmacy, Fudan University, Shanghai, People’s Republic of China, 201203
- Key Laboratory of Smart Drug Delivery, Ministry of Education & PLA, People’s Republic of China, 201203
| | - Yuan Yu
- Department of Pharmaceutics, School of Pharmacy, The Second Military Medical University, Shanghai, People’s Republic of China, 200433
| | - Liangran Guo
- Department of Pharmaceutics, School of Pharmacy, Fudan University, Shanghai, People’s Republic of China, 201203
- Key Laboratory of Smart Drug Delivery, Ministry of Education & PLA, People’s Republic of China, 201203
| | - Jun Chen
- Department of Pharmaceutics, School of Pharmacy, Fudan University, Shanghai, People’s Republic of China, 201203
- Key Laboratory of Smart Drug Delivery, Ministry of Education & PLA, People’s Republic of China, 201203
| | - Shuaiqi Pan
- Department of Pharmaceutics, School of Pharmacy, Fudan University, Shanghai, People’s Republic of China, 201203
- Key Laboratory of Smart Drug Delivery, Ministry of Education & PLA, People’s Republic of China, 201203
| | - Jinfeng Ren
- Department of Pharmaceutics, School of Pharmacy, Fudan University, Shanghai, People’s Republic of China, 201203
- Key Laboratory of Smart Drug Delivery, Ministry of Education & PLA, People’s Republic of China, 201203
| | - Ziyi Wen
- Department of Pharmaceutics, School of Pharmacy, Fudan University, Shanghai, People’s Republic of China, 201203
- Key Laboratory of Smart Drug Delivery, Ministry of Education & PLA, People’s Republic of China, 201203
| | - Xinguo Jiang
- Department of Pharmaceutics, School of Pharmacy, Fudan University, Shanghai, People’s Republic of China, 201203
- Key Laboratory of Smart Drug Delivery, Ministry of Education & PLA, People’s Republic of China, 201203
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28
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Xu R, Fisher M, Juliano RL. Targeted albumin-based nanoparticles for delivery of amphipathic drugs. Bioconjug Chem 2011; 22:870-8. [PMID: 21452893 DOI: 10.1021/bc1002295] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We report the preparation and physical and biological characterization of human serum albumin-based micelles of approximately 30 nm diameter for the delivery of amphipathic drugs, represented by doxorubicin. The micelles were surface conjugated with cyclic RGD peptides to guide selective delivery to cells expressing the α(v)β(3) integrin. Multiple poly(ethylene glycol)s (PEGs) with molecular weight of 3400 Da were used to form a hydrophilic outer layer, with the inner core formed by albumin conjugated with doxorubicin via disulfide bonds. Additional doxorubicin was physically adsorbed into this core to attain a high drug loading capacity, where each albumin was associated with about 50 doxorubicin molecules. The formed micelles were stable in serum but continuously released doxorubicin when incubated with free thiols at concentrations mimicking the intracellular environment. When incubated with human melanoma cells (M21+) that express the α(v)β(3) integrin, higher uptake and longer retention of doxorubicin was observed with the RGD-targeted micelles than in the case of untargeted control micelles or free doxorubicin. Consequently, the RGD-targeted micelles manifested cytotoxicity at lower doses of drug than control micelles or free drug.
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Affiliation(s)
- Rongzuo Xu
- Division of Molecular Pharmaceutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, United States
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29
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Carlsen A, Glaser N, Le Meins JF, Lecommandoux S. Block copolymer vesicle permeability measured by osmotic swelling and shrinking. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:4884-90. [PMID: 21405067 DOI: 10.1021/la105045m] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Vesicle response to osmotic shock provides insight into membrane permeability, a highly relevant value for applications ranging from nanoreactor experimentation to drug delivery. The osmotic shock approach has been employed extensively to elucidate the properties of phospholipid vesicles (liposomes) and of varieties of polymer vesicles (polymersomes). This study seeks to compare the membrane response for two varieties of polymersomes, a comb-type siloxane surfactant, poly(dimethylsiloxane)-g-poly(ethylene oxide) (PDMS-g-PEO), and a diblock copolymer, polybutadiene-b-poly(ethylene oxide) (PBut-b-PEO). Despite similar molecular weights and the same hydrophilic block (PEO), the two copolymers possess different hydrophobic blocks (PBut and PDMS) and corresponding glass transition temperatures (-31 and -123 °C, respectively). Dramatic variations in membrane response are observed during exposure to osmotic pressure differences, and values for polymer membrane permeability to water are extracted. We propose an explanation for the observed phenomena based on the respective properties of the PBut-b-PEO and PDMS-g-PEO membranes in terms of cohesion, thickness, and fluidity.
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Affiliation(s)
- Autumn Carlsen
- Université de Bordeaux, ENSCPB, 16 avenue Pey Berland, 33607 Pessac Cedex, France
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30
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Torchilin V. Tumor delivery of macromolecular drugs based on the EPR effect. Adv Drug Deliv Rev 2011; 63:131-5. [PMID: 20304019 DOI: 10.1016/j.addr.2010.03.011] [Citation(s) in RCA: 1416] [Impact Index Per Article: 108.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2010] [Accepted: 03/15/2010] [Indexed: 02/07/2023]
Abstract
Enhanced permeability and retention (EPR) effect is the physiology-based principal mechanism of tumor accumulation of large molecules and small particles. This specific issue of Advanced Drug Delivery Reviews is summing up multiple data on the EPR effect-based drug design and clinical outcome. In this commentary, the role of the EPR effect in the intratumoral delivery of protein and peptide drugs, macromolecular drugs and drug-loaded long-circulating pharmaceutical nanocarriers is briefly discussed together with some additional opportunities for drug delivery arising from the initial EPR effect-mediated accumulation of drug-containing macromolecular systems in tumors.
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31
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Sanson C, Diou O, Thévenot J, Ibarboure E, Soum A, Brûlet A, Miraux S, Thiaudière E, Tan S, Brisson A, Dupuis V, Sandre O, Lecommandoux S. Doxorubicin loaded magnetic polymersomes: theranostic nanocarriers for MR imaging and magneto-chemotherapy. ACS NANO 2011; 5:1122-40. [PMID: 21218795 DOI: 10.1021/nn102762f] [Citation(s) in RCA: 256] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Hydrophobically modified maghemite (γ-Fe(2)O(3)) nanoparticles were encapsulated within the membrane of poly(trimethylene carbonate)-b-poly(l-glutamic acid) (PTMC-b-PGA) block copolymer vesicles using a nanoprecipitation process. This formation method gives simple access to highly magnetic nanoparticles (MNPs) (loaded up to 70 wt %) together with good control over the vesicles size (100-400 nm). The simultaneous loading of maghemite nanoparticles and doxorubicin was also achieved by nanoprecipitation. The deformation of the vesicle membrane under an applied magnetic field has been evidenced by small angle neutron scattering. These superparamagnetic hybrid self-assemblies display enhanced contrast properties that open potential applications for magnetic resonance imaging. They can also be guided in a magnetic field gradient. The feasibility of controlled drug release by radio frequency magnetic hyperthermia was demonstrated in the case of encapsulated doxorubicin molecules, showing the viability of the concept of magneto-chemotherapy. These magnetic polymersomes can be used as efficient multifunctional nanocarriers for combined therapy and imaging.
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Affiliation(s)
- Charles Sanson
- Université de Bordeaux/IPB, ENSCBP, 16 avenue Pey Berland, 33607 Pessac Cedex, France
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32
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Abstract
Advances in genetic engineering have led to the synthesis of protein-based block copolymers with control of chemistry and molecular weight, resulting in unique physical and biological properties. The benefits from incorporating peptide blocks into copolymer designs arise from the fundamental properties of proteins to adopt ordered conformations and to undergo self-assembly, providing control over structure formation at various length scales when compared to conventional block copolymers. This review covers the synthesis, structure, assembly, properties, and applications of protein-based block copolymers.
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Affiliation(s)
- Olena S Rabotyagova
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, USA
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Sanson C, Schatz C, Le Meins JF, Soum A, Thévenot J, Garanger E, Lecommandoux S. A simple method to achieve high doxorubicin loading in biodegradable polymersomes. J Control Release 2010; 147:428-35. [DOI: 10.1016/j.jconrel.2010.07.123] [Citation(s) in RCA: 293] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2010] [Revised: 07/23/2010] [Accepted: 07/29/2010] [Indexed: 11/26/2022]
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Nanoparticulate strategies for effective delivery of poorly soluble therapeutics. Ther Deliv 2010; 1:149-67. [DOI: 10.4155/tde.10.4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The pharmacological activity of a drug molecule depends on its ability to dissolve and interact with its biological target, either through dissolution and absorption, or through dissolution and receptor interaction. The low bioavailability that characterizes poorly water-soluble drugs is usually attributed to the dissolution kinetic profile. Novel strategies to effectively deliver these drugs include nanoparticulate approaches that either increase the surface area of the drug or improve the solubility characteristics of the drug. Nanosizing approaches are based on the production of drug nanocrytals dispersed in an aqueous surfactant solution, whereas other possibilities include drug loading in nanoparticles. Promising nanoparticulate approaches include the development of lipid-based nanocarriers to increase drug solubility followed by enhanced bioavailability. To select the best approach there are, however, some critical considerations to take into account, for example the physicochemical properties of the drug, the possibility to scale-up the production process, the toxicological considerations of the use of solvents and cosolvents, the selection of an environmentally sustainable methodology and the development of a more patient-friendly dosage form. This article addresses these relevant questions and provides feasible examples of novel strategies with respect to relevant administration routes.
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35
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Berthier DL, Schmidt I, Fieber W, Schatz C, Furrer A, Wong K, Lecommandoux S. Controlled release of volatile fragrance molecules from PEO-b-PPO-b-PEO block copolymer micelles in ethanol-water mixtures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:7953-7961. [PMID: 20146490 DOI: 10.1021/la904832d] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Active materials that can solubilize in different compartments of a sample show release properties which might be of interest in some applications where a delayed release of solutes for instance is required. We studied perfume solutes in compartments of Pluronic block copolymers of different compositions and molecular weights over a range of ethanol-water mixtures. Phase diagrams were constructed to identify and map micellar phases, then dynamic light scattering was used to characterize the solute-swollen micelles; NMR provided with the partition of solutes between solvent and micelles, and equilibrium constants K(c) were estimated using headspace analysis. Finally solute-evaporation rates were measured by thermogravimetry. We focused on two typical behaviors: when solubilization in a micellar compartment occurs, delayed release increased with K(c). When solubilization was limited or absent, either because no micelles form or, in the presence of micelles, because solubilization was minor or absent, delayed release was correspondingly absent.
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Affiliation(s)
- Damien L Berthier
- Firmenich SA, Division Recherche et Développement, B.P. 239, CH-1211 Genève 8, Switzerland.
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36
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In vitro and In vivo Evaluation of Docetaxel Loaded Biodegradable Polymersomes. Macromol Biosci 2010; 10:503-12. [DOI: 10.1002/mabi.200900415] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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37
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Upadhyay KK, Bhatt AN, Mishra AK, Dwarakanath BS, Jain S, Schatz C, Le Meins JF, Farooque A, Chandraiah G, Jain AK, Misra A, Lecommandoux S. The intracellular drug delivery and anti tumor activity of doxorubicin loaded poly(gamma-benzyl L-glutamate)-b-hyaluronan polymersomes. Biomaterials 2010; 31:2882-92. [PMID: 20053435 DOI: 10.1016/j.biomaterials.2009.12.043] [Citation(s) in RCA: 282] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2009] [Accepted: 12/16/2009] [Indexed: 11/17/2022]
Abstract
We have investigated the intracellular delivery of doxorubicin (DOX) loaded poly(gamma-benzyl L-glutamate)-block-hyaluronan (PBLG-b-HYA) based polymersomes (PolyDOX) in high (MCF-7) and low (U87) CD44 expressing cancer cell models. DOX was successfully loaded into polymersomes using nanoprecipitation method and in vitro drug release pattern were achieved at pH 5.5 and 7.4 up to 10 days. Block copolymer vesicles without loaded DOX were non cytotoxic in both cells at concentration 150-650 microg/mL. Flow cytometry data suggested successful uptake of PolyDOX in cells and high accumulation was found in MCF-7 than U87 cells. Microscopy imagings revealed that in MCF-7 cells PolyDOX was more in cytoplasm and free DOX in nuclei, whereas in U87 cells free DOX was also found in the cytoplasm. Cytotoxicity of the drug was concentration and exposure time dependent. In addition, PolyDOX significantly enhanced reactive oxygen species (ROS) level in both cells. PolyDOX also suppressed growth of breast tumor on female Sprague-Dawley (SD) rats as compared to phosphate buffer saline pH 7.4 (PBS) control group. In addition reduced level of serum enzymes (LDH and CPK) by PolyDOX formulation indicated less cardiotoxicity of DOX after loading in polymersomes. Results suggest that intracellular delivery of PolyDOX was depended on the CD44 expression level in cells due to presence of hyaluronic acid on the surface of polymersomes, and could be used as a self-targeting drug delivery cargo in over-expressed CD44 glycoprotein cells of breast cancer.
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Affiliation(s)
- Kamal K Upadhyay
- Université de Bordeaux, UMR5629, ENSCPB, 16, Avenue Pey Berland, 33607 Pessac-Cedex, France
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38
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Alvarez-Lorenzo C, Concheiro A. Polymeric micelles as drug stabilizers: the camptothecin and simvastatin cases. J Drug Deliv Sci Technol 2010. [DOI: 10.1016/s1773-2247(10)50042-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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