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Sakuma T, Makino K, Terada H, Takeuchi I, Mitova V, Troev K. Synthesis and Characterization of Amphiphilic Diblock Polyphosphoesters Containing Lactic Acid Units for Potential Drug Delivery Applications. Molecules 2023; 28:5243. [PMID: 37446904 DOI: 10.3390/molecules28135243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 06/30/2023] [Accepted: 07/03/2023] [Indexed: 07/15/2023] Open
Abstract
Multistep one-pot polycondensation reactions synthesized amphiphilic diblock polyphosphoesters containing lactic acid units in the polymer backbone. At the first step was synthesized poly[poly(ethylene glycol) H-phosphonate-b-poly(ethylene glycol)lactate H-phosphonate] was converted through one pot oxidation into poly[alkylpoly(ethylene glycol) phosphate-b-alkylpoly(ethylene glycol)lactate phosphate]s. They were characterized by 1H, 13C {H},31P NMR, and size exclusion chromatography (SEC). The effects of the polymer composition on micelle formation and stability, and micelle size were studied via dynamic light scattering (DLS). The hydrophilic/hydrophobic balance of these polymers can be controlled by changing the chain lengths of hydrophobic alcohols. Drug loading and encapsulation efficiency tests using Sudan III and doxorubicin revealed that hydrophobic substances can be incorporated inside the hydrophobic core of polymer micelles. The micelle size was 72-108 nm when encapsulating Sudan III and 89-116 nm when encapsulating doxorubicin. Loading capacity and encapsulation efficiency depend on the length of alkyl side chains. Changing the alkyl side chain from 8 to 16 carbon atoms increased micelle-encapsulated Sudan III and doxorubicin by 1.6- and 1.1-fold, respectively. The results obtained indicate that these diblock copolymers have the potential as drug carriers.
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Affiliation(s)
- Tatsuya Sakuma
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641, Yamazaki, Noda 278-8510, Chiba, Japan
| | - Kimiko Makino
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641, Yamazaki, Noda 278-8510, Chiba, Japan
| | - Hiroshi Terada
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641, Yamazaki, Noda 278-8510, Chiba, Japan
| | - Issei Takeuchi
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641, Yamazaki, Noda 278-8510, Chiba, Japan
- Faculty of Pharmaceutical Science, Josai International University, 1 Gumyo, Togane 283-8555, Chiba, Japan
| | - Violeta Mitova
- Institute of Polymers, Bulgarian Academy of Sciences, 113 Sofia, Bulgaria
| | - Kolio Troev
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641, Yamazaki, Noda 278-8510, Chiba, Japan
- Institute of Polymers, Bulgarian Academy of Sciences, 113 Sofia, Bulgaria
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2
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Shirani S, Varshosaz J, Rostami M, Mirian M. Redox responsive polymeric micelles of gellan gum/abietic acid for targeted delivery of ribociclib. Int J Biol Macromol 2022; 215:334-345. [PMID: 35718159 DOI: 10.1016/j.ijbiomac.2022.06.095] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 06/10/2022] [Accepted: 06/12/2022] [Indexed: 02/06/2023]
Abstract
In most breast tumors level of glutathione reductase is much higher than in healthy tissues. In the current study, a redox-glutathione sensitive micelle based on Abietic acid-Cystamine-Gellan gum (AB-ss-GG) was designed for targeted delivery of Ribociclib (RIB) to breast cancer cells. AB is a monocarboxylic acid and a diterpenoid abietane with anti-tumor effects. Successful synthesis of the conjugate was confirmed by FT-IR and 1HNMR spectroscopy. Critical micelle concentration (CMC) was measured by pyrene as a fluorescent probe. Micelles of AB-GG and AB-ss-GG were loaded with different RIB/polymer ratios, and their redox-sensitivity was measured in the presence and absence of dithiothreitol (DTT) by determining the particle size and RIB release efficiency. Cell cytotoxicity and cellular uptake were assessed by MTT assay and flow-cytometry method on MCF-7 cells. CMC of AB-ss-GG and AB-GG micelles were estimated to be 40.15 and 37.33 mg/mL, respectively. In the presence of DTT, the particle size and release efficiency of AB-ss-GG micelles increased specially at a 1:1 drug/polymer ratio. AB-ss-GG micelles containing RIB showed higher cytotoxicity (IC50 = 47.86 μmol/L) and cellular uptake than AB-GG micelles (IC50 = 190.25 μmol/L) and free RIB (IC50 = 75.26 μmol/L) at 48 h. AB-ss-GG micelles showed a promising redox-sensitive polymeric carrier for RIB delivery.
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Affiliation(s)
- Sarvin Shirani
- Drug Delivery Systems Research Center and Department of Pharmaceutics, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Jaleh Varshosaz
- Drug Delivery Systems Research Center and Department of Pharmaceutics, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Mahboubeh Rostami
- Novel Drug Delivery Systems Research Centre and Department of Medicinal Chemistry, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Mina Mirian
- Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran.
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3
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Altinkok C, Acik G, Karabulut HRF, Ciftci M, Tasdelen MA, Dag A. Synthesis and characterization of bile
acid‐based
polymeric micelle as a drug carrier for doxorubicin. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5478] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Cagatay Altinkok
- Faculty of Science and Letters, Department of Chemistry Istanbul Technical University Istanbul Turkey
| | - Gokhan Acik
- Department of Chemistry, Faculty of Science and Letters Piri Reis University Istanbul Turkey
| | | | - Mustafa Ciftci
- Department of Chemistry, Faculty of Engineering and Natural Science Bursa Technical University Bursa Turkey
| | - Mehmet Atilla Tasdelen
- Department of Polymer Materials Engineering, Faculty of Engineering Yalova University Yalova Turkey
| | - Aydan Dag
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy Bezmialem Vakif University Istanbul Turkey
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4
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Water-soluble polymer micelles formed from amphiphilic diblock copolymers bearing pendant phosphorylcholine and methoxyethyl groups. Polym J 2021. [DOI: 10.1038/s41428-021-00482-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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5
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pH-responsive polymer micelles for methotrexate delivery at tumor microenvironments. E-POLYMERS 2020. [DOI: 10.1515/epoly-2020-0064] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
AbstractMethotrexate (MTX) anticancer drug was successfully loaded and released in a controlled manner from polymer micelles made of a diblock copolymer of poly(monomethoxy ethylene glycol)-b-poly(ε-caprolactone) (mPEG-PCL). The empty and MTX-loaded micelles (MTX/mPEG-PCL) were characterized by electron microscopy. The drug release dependence upon pH 5.4, 6.5, and 7.4 for 30 days was proven and characterized by UV-Vis spectroscopy. The cytotoxic effect of MTX/mPEG-PCL micelles on MCF-7 breast cancer cells was evaluated through an MTT assay. The morphological analysis indicated the successful formation of micelles of 76 and 131 nm for empty and MTX-loaded micelles, respectively. An encapsulation efficiency of 70.2% and a loading capacity of 8.8% were obtained. The in vitro release of MTX showed a gradual and sustained profile over 22 days, with a clear trend to much higher release at acidic pH (80 and 90% for pH 6.7 and 5.5, respectively). The MTX/mPEG-PCL micelles showed an IC50 of MCF-7 cells at 30 µg mL−1. The results suggested that MTX/mPEG-PCL could be a promising drug delivery system for cancer treatment.
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6
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Hwang D, Ramsey JD, Kabanov AV. Polymeric micelles for the delivery of poorly soluble drugs: From nanoformulation to clinical approval. Adv Drug Deliv Rev 2020; 156:80-118. [PMID: 32980449 DOI: 10.1016/j.addr.2020.09.009] [Citation(s) in RCA: 261] [Impact Index Per Article: 65.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 09/18/2020] [Accepted: 09/21/2020] [Indexed: 01/04/2023]
Abstract
Over the last three decades, polymeric micelles have emerged as a highly promising drug delivery platform for therapeutic compounds. Particularly, poorly soluble small molecules with high potency and significant toxicity were encapsulated in polymeric micelles. Polymeric micelles have shown improved pharmacokinetic profiles in preclinical animal models and enhanced efficacy with a superior safety profile for therapeutic drugs. Several polymeric micelle formulations have reached the clinical stage and are either in clinical trials or are approved for human use. This furthers interest in this field and underscores the need for additional learning of how to best design and apply these micellar carriers to improve the clinical outcomes of many drugs. In this review, we provide detailed information on polymeric micelles for the solubilization of poorly soluble small molecules in topics such as the design of block copolymers, experimental and theoretical analysis of drug encapsulation in polymeric micelles, pharmacokinetics of drugs in polymeric micelles, regulatory approval pathways of nanomedicines, and current outcomes from micelle formulations in clinical trials. We aim to describe the latest information on advanced analytical approaches for elucidating molecular interactions within the core of polymeric micelles for effective solubilization as well as for analyzing nanomedicine's pharmacokinetic profiles. Taking into account the considerations described within, academic and industrial researchers can continue to elucidate novel interactions in polymeric micelles and capitalize on their potential as drug delivery vehicles to help improve therapeutic outcomes in systemic delivery.
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Affiliation(s)
- Duhyeong Hwang
- Center for Nanotechnology in Drug Delivery and Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, USA
| | - Jacob D Ramsey
- Center for Nanotechnology in Drug Delivery and Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, USA
| | - Alexander V Kabanov
- Center for Nanotechnology in Drug Delivery and Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, USA; Laboratory of Chemical Design of Bionanomaterials, Faculty of Chemistry, M. V. Lomonosov Moscow State University, Moscow 119992, Russia.
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7
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Mirsafaei R, Varshosaz J. Polyacrylamide-punicic acid conjugate-based micelles for flutamide delivery in PC3 cells of prostate cancer: synthesis, characterisation and cytotoxicity studies. IET Nanobiotechnol 2020; 14:417-422. [PMID: 32691745 PMCID: PMC8676636 DOI: 10.1049/iet-nbt.2020.0014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 04/01/2020] [Accepted: 04/06/2020] [Indexed: 01/26/2023] Open
Abstract
The aim of the present study was to synthesize a novel biopolymeric micelle based on punicic acid (PA) and polyacrylamide (PAM) for carrying chemotherapeutic drugs used in prostate cancer treatment. A polymer composite micelle was prepared by chemical conjugation between PAM and PA. The micelles were prepared by self-assembly via film casting followed by ultrasonication method. The successful production of PAMPA copolymeric micelles was confirmed using FTIR, 1H-NMR, and TEM. Then, flutamide was loaded in the designed nanomicelles and they were characterized. The cell cytotoxicity of the micelles was studied on PC3 cells of prostate cancer. The prepared nanomicelles showed the particle size of 88 nm, PDI of 0.246, zeta potential of -9 mV, drug loading efficiency of 94.5%, drug release of 85.6% until 10 hours in pH 7.4 and CMC of 74.13 μg/ml. The cell viability in blank nanocarriers was about 70% in PC3 cells at concentration of 25 μM. More significant cytotoxic effects were seen for flutamide loaded micelles at this concentration compared to the free drug. The results suggest that the PAMPA co-polymeric nanomicelles can be utilized as an effective carrier to enhance the cytotoxic effects of flutamide in prostate cancer.
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Affiliation(s)
- Razieh Mirsafaei
- Novel Drug Delivery Systems Research Centre and Department of Pharmaceutics, School of Pharmacy, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Jaleh Varshosaz
- Novel Drug Delivery Systems Research Centre and Department of Pharmaceutics, School of Pharmacy, Isfahan University of Medical Sciences, Isfahan, Iran.
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Kazemi M, Emami J, Hasanzadeh F, Minaiyan M, Mirian M, Lavasanifar A. Pegylated multifunctional pH-responsive targeted polymeric micelles for ovarian cancer therapy: synthesis, characterization and pharmacokinetic study. INT J POLYM MATER PO 2020. [DOI: 10.1080/00914037.2020.1776282] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Moloud Kazemi
- Department of Pharmaceutics, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Jaber Emami
- Department of Pharmaceutics, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Farshid Hasanzadeh
- Department of Medical Chemistry, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohsen Minaiyan
- Department of Pharmacology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mina Mirian
- Department of Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Afsaneh Lavasanifar
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Canada
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9
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Styliari ID, Taresco V, Theophilus A, Alexander C, Garnett M, Laughton C. Nanoformulation-by-design: an experimental and molecular dynamics study for polymer coated drug nanoparticles. RSC Adv 2020; 10:19521-19533. [PMID: 35515456 PMCID: PMC9054057 DOI: 10.1039/d0ra00408a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 04/08/2020] [Indexed: 12/27/2022] Open
Abstract
The formulation of drug compounds into nanoparticles has many potential advantages in enhancing bioavailability and improving therapeutic efficacy. However, few drug molecules will assemble into stable, well-defined nanoparticulate structures. Amphiphilic polymer coatings are able to stabilise nanoparticles, imparting defined surface properties for many possible drug delivery applications. In the present article we explore, both experimentally and in silico, a potential methodology to coat drug nanoparticles with an amphiphilic co-polymer. Monomethoxy polyethylene glycol-polycaprolactone (mPEG-b-PCL) diblock copolymers with different mPEG lengths (M w 350, 550, 750 and 2000), designed to give different levels of colloidal stability, were used to coat the surface of indomethacin nanoparticles. Polymer coating was achieved by a flow nanoprecipitation method that demonstrated excellent batch-to-batch reproducibility and resulted in nanoparticles with high drug loadings (up to 78%). At the same time, in order to understand this modified nanoprecipitation method at an atomistic level, large-scale all-atom molecular dynamics simulations were performed in parallel using the GROMOS53a6 forcefield parameters. It was observed that the mPEG-b-PCL chains act synergistically with the acetone molecules to dissolve the indomethacin nanoparticle while after the removal of the acetone molecules (mimicking the evaporation of the organic solvent) a polymer-drug nanoparticle was formed (yield 99%). This work could facilitate the development of more efficient methodologies for producing nanoparticles of hydrophobic drugs coated with amphiphilic polymers. The atomistic insight from the MD simulations in tandem with the data from the drug encapsulation experiments thus leads the way to a nanoformulation-by-design approach for therapeutic nanoparticles.
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Affiliation(s)
| | - Vincenzo Taresco
- School of Pharmacy, University of Nottingham Nottingham NG7 2RD UK
| | | | | | - Martin Garnett
- School of Pharmacy, University of Nottingham Nottingham NG7 2RD UK
| | - Charles Laughton
- School of Pharmacy, University of Nottingham Nottingham NG7 2RD UK
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10
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Langridge TD, Gemeinhart RA. Toward understanding polymer micelle stability: Density ultracentrifugation offers insight into polymer micelle stability in human fluids. J Control Release 2020; 319:157-167. [PMID: 31881319 PMCID: PMC6958513 DOI: 10.1016/j.jconrel.2019.12.038] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 12/19/2019] [Accepted: 12/20/2019] [Indexed: 01/01/2023]
Abstract
Micelles, as a class of drug delivery systems, are underrepresented among United States Food and Drug Administration approved drugs. A lack of clinical translation of these systems may be due to, in part, to a lack of understanding of micelle interactions with biologic fluids following injection. Despite the limited clinical translation, micelles remain an active area of research focus and pre-clinical development. The goal of the present study was to examine the stability of amphiphilic block copolymer micelles in biologic fluids to identify the properties and components of biologic fluids that influence micelle stability. Micelle stability, measured via Förster resonance energy transfer-based fluorescent spectrometry, was complemented with density ultracentrifugation to reveal the colocalized, or dissociated, state of the dye cargo after exposure to human biologic fluids. Polymeric micelles composed of poly(ethylene glycol-block-caprolactone) (mPEG-CL) and poly(ethylene glycol-block-lactide) (mPEG-LA) were unstable in fetal bovine serum, human serum and synovial fluid, with varying levels of instability observed in ascites and pleural fluid. All polymeric micelles exhibited stability in cerebrospinal fluid, highlighting the potential for local cerebro-spinal administration of micelles. Interestingly, mPEG2.2k-CL3.1k and mPEG2k-LA2.7k micelles favored dissolution whereas mPEG5.4k-LA28.5k micelles favored stability. Taken together, our data offers both quantitative and qualitative evidence for micelle stability within human biologic fluids and offers evidence of polymer micelle instability in biologic fluids that is not explained by either total protein content or total unsaturated lipid content. The results help to identify potential sites for local delivery where stability is maintained.
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Affiliation(s)
- Timothy D Langridge
- Department of Pharmaceutical Sciences, University of Illinois at Chicago, Chicago, IL 60612-7231, USA
| | - Richard A Gemeinhart
- Department of Pharmaceutical Sciences, University of Illinois at Chicago, Chicago, IL 60612-7231, USA; Department of Bioengineering, University of Illinois at Chicago, Chicago, IL 60607-7052, USA; Department of Chemical Engineering, University of Illinois at Chicago, Chicago, IL 60607-7052, USA; Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, Chicago, IL 60612-4319, USA.
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11
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Emami J, Kazemi M, Hasanzadeh F, Minaiyan M, Mirian M, Lavasanifar A. Novel pH-triggered biocompatible polymeric micelles based on heparin-α-tocopherol conjugate for intracellular delivery of docetaxel in breast cancer. Pharm Dev Technol 2020; 25:492-509. [PMID: 31903817 DOI: 10.1080/10837450.2019.1711395] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In this study, pH-triggered polymeric micelle comprising α-tocopherol (TOC) and heparin (HEP) was developed and loaded with docetaxel (DTX). The amphiphilic copolymer was synthesized by grafting TOC onto HEP backbone by a pH-cleavable bond. DTX-loaded micelles were characterized in terms of critical micelle concentration (CMC), particle size, zeta potential, entrapment efficiency (EE), pH-responsive behavior, and drug release. In vitro cytotoxicity of the micelles against breast cancer cells was investigated by MTT assay. The cellular uptake of coumarin-loaded micelles was also evaluated. Furthermore, the pharmacokinetics of DTX-loaded micelles was evaluated and compared with that of Taxotere®.HEP-CA-TOC copolymers showed low CMC values and high EE. At pH 7.4, the micelles remained stable in size and shape, whereas considerable changes in particle size and morphology were observed at pH 5.5. DTX-loaded micelles showed pH-dependent drug release profiles. Coumarin-loaded micelles showed higher cellular uptake than free coumarin. Therefore, the DTX-loaded micelles showed more toxicity against breast cancer cells than free DTX. A significant increase in T1/2 β, AUC0-∞ and MRT was observed in DTX-loaded micelle treated group as compared to the group treated with Taxotere®.The results suggest that the pH-sensitive HEP-modified micelles could be promising for enhanced intracellular drug delivery of DTX for cancer treatment.
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Affiliation(s)
- Jaber Emami
- Department of Pharmaceutics, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Moloud Kazemi
- Department of Pharmaceutics, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Farshid Hasanzadeh
- Department of Medical Chemistry, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohsen Minaiyan
- Department of Pharmacology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mina Mirian
- Department of Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Afsaneh Lavasanifar
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Canada
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12
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Mirsafaei R, Varshosaz J, Mirsattari SN. Folate-Targeted Polyacrylamide/Punicic Acid Nanomicelles for Flutamide Delivery in Prostate Cancer: Characterization, In Vitro Biological Evaluation, and its DFT Study. RECENT PATENTS ON NANOTECHNOLOGY 2020; 14:360-374. [PMID: 32400341 DOI: 10.2174/1872210514666200513092614] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 03/01/2020] [Accepted: 03/20/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Targeted nanocarriers can be used for reducing the unwanted side effects of drugs in non-target organs. Punicic acid, the polyunsaturated fatty acid of pomegranate seed oil, has been shown to possess anti-cancer effects on prostate cancer and the study also covers recent patents related to prostate cancer. The objective of the current study was to synthesize a co-polymeric micelle for delivery of Flutamide (FL) in prostate cancer using Polyacrylamide (PAM) and Punicic Acid (PA). METHODS The co-polymer of PAM and PA was synthesized and conjugated to folic acid. The successful conjugation was studied computationally by the density functional theory method and was confirmed by the FT- IR and 1HNMR. The folate-PAMPA micelles produced by the film casting method were characterized physically. FL was loaded in the nanomicelles and its release test was done at different pH. The Critical Micelle Concentration (CMC) was measured by pyrene as a fluorescent probe. Their cellular uptake and cytotoxicity were evaluated on PC3 prostate cancer cells. The molecular geometry and vibrational frequencies of two different possibilities for conjugation were calculated using the B3LYP/6-31G basis set. RESULTS The CMC of the micelles and their particle size were 79.05 μg/ml and 88 nm, respectively. The resulting nanocarriers of FL showed significantly more cytotoxic effects than the free drug at a concentration of 25 μM. The calculated results showed that the optimized geometries could well reproduce the structural parameters, and the theoretical vibrational frequencies were in good agreement with the experimental values. CONCLUSION Folate-PAMPA nanomicelles may be promising for the enhancement of FL cytotoxicity and seem to potentiate the effect of chemotherapeutic agents used in prostate cancer treatment.
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Affiliation(s)
- Razieh Mirsafaei
- Department of Pharmaceutics, School of Pharmacy and Novel Drug Delivery Systems Research Centre, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Jaleh Varshosaz
- Department of Pharmaceutics, School of Pharmacy and Novel Drug Delivery Systems Research Centre, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Seyed N Mirsattari
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O Box 86145-311, Shahreza, Isfahan, Iran
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Hassankhani Rad A, Asiaee F, Jafari S, Shayanfar A, Lavasanifar A, Molavi O. Poly(ethylene glycol)-poly(ε-caprolactone)-based micelles for solubilization and tumor-targeted delivery of silibinin. ACTA ACUST UNITED AC 2019; 10:87-95. [PMID: 32363152 PMCID: PMC7186544 DOI: 10.34172/bi.2020.11] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 10/07/2019] [Accepted: 10/08/2019] [Indexed: 11/21/2022]
Abstract
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Introduction: Silibinin is a naturally occurring compound with known positive impacts on prevention and treatment of many types of human illnesses in general and cancer in particular. Silibinin is poorly water soluble which results in its insufficient bioavailability and lack of therapeutic efficacy in cancer. Here, we proposed to examine the potential of micelles composed of poly(ethylene glycol) (PEG) as the hydrophilic block and poly(ε-caprolactone) (PCL), poly(α-benzylcarboxylate-ε-caprolactone) (PBCL), or poly(lactide)-(PBCL) (PLA-PBCL) as hydrophobic blocks for enhancing the water solubility of silibinin and its targeted delivery to tumor.
Methods: Co-solvent evaporation method was used to incorporate silibinin into PEG-PCL based micelles. Drug release profiles were assessed using dialysis bag method. MTT assay also was used to analyze functional activity of drug delivery in B16 melanoma cells.
Results: Silibinin encapsulated micelles were shown to be less than 60 nm in size. Among different structures under study, the one with PEG-PBCL could incorporate silibinin with the highest encapsulation efficiency being 95.5%, on average. PEG-PBCL micelles could solubilize 1 mg silibinin in 1 mL water while the soluble amount of silibinin was found to be 0.092 mg/mL in the absence of polymeric micelles. PEG-PBCL micelles provided the sustained release of silibinin indicated with less than 30% release of silibinin within 24 hours. Silibinin encapsulated in PEG-PBCL micelles resulted in growth inhibitory effect in B16 cancer cells which was significantly higher than what observed with free drug.
Conclusion: Our findings showed that PEG-PBCL micellar nanocarriers can be a useful vehicle for solubilization and targeted delivery of silibinin.
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Affiliation(s)
- Ashkan Hassankhani Rad
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Faculty of Pharmacy, Tabriz University of Medical Science, Tabriz, Iran
| | - Farshid Asiaee
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Faculty of Pharmacy, Tabriz University of Medical Science, Tabriz, Iran
| | - Sevda Jafari
- Faculty of Pharmacy, Tabriz University of Medical Science, Tabriz, Iran.,Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ali Shayanfar
- Faculty of Pharmacy, Tabriz University of Medical Science, Tabriz, Iran
| | - Afsaneh Lavasanifar
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Ommoleila Molavi
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Faculty of Pharmacy, Tabriz University of Medical Science, Tabriz, Iran
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Sze LP, Li HY, Lai KLA, Chow SF, Li Q, KennethTo KW, Lam TNT, Lee WYT. Oral delivery of paclitaxel by polymeric micelles: A comparison of different block length on uptake, permeability and oral bioavailability. Colloids Surf B Biointerfaces 2019; 184:110554. [PMID: 31627103 DOI: 10.1016/j.colsurfb.2019.110554] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 08/23/2019] [Accepted: 10/02/2019] [Indexed: 12/26/2022]
Abstract
Drug solubility and permeability are two major challenges affecting oral delivery, the most popular route of drug administration. Polymeric micelles is an emerging technology for overcoming the current oral drug delivery hurdles. Previous study primarily focused on developing new polymers or new micellar systems and a systematic investigation of the impact of the polymer block length on solubility and permeability enhancement; and their subsequent effect on oral bioavailability is lacking. Herein, by using paclitaxel, a poorly soluble P-glycoproteins (P-gp) substrate, as a model, we aim to assess and compare the drug-loaded micelles prepared with two different molecular weight of poly(ethylene glycol)-block-poly(ε-caprolactone) (PEG-b-PCL), with the ultimate goal of establishing a strong scientific rationale for proper design of formulations for oral drug delivery. PEG-b-PCL (750:570) (PEG17-b-PCL5) and PEG-b-PCL (5k:10k) (PEG114-b-PCL88) effectively enhanced the solubility of paclitaxel compared to the free drug. PEG-b-PCL (750:570) increased both P-gp and non P-gp substrate cellular uptake and increased the apparent permeability coefficient of a P-gp substrate. In vivo animal study showed that PEG-b-PCL micelles efficiently enhanced the oral bioavailability of paclitaxel. In addition to solubility enhancement, polymer choice also plays a pivotal role in determining the oral bioavailability improvement, probably via permeation enhancement. In conclusion, the knowledge gained in this study enables rational design of polymeric micelles to overcome the current challenges of oral drug delivery and it also provides a basis for future clinical translation of the technology.
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Affiliation(s)
- Lai Pan Sze
- School of Pharmacy, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - Ho Yin Li
- School of Pharmacy, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - Ka Lun Alan Lai
- School of Pharmacy, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - Shing Fung Chow
- Department of Pharmacology and Pharmacy, Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Qingqing Li
- Faculty of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, China
| | - Kin Wah KennethTo
- School of Pharmacy, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - Tai Ning Teddy Lam
- School of Pharmacy, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - Wai Yip Thomas Lee
- School of Pharmacy, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong.
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15
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Engelberg S, Netzer E, Assaraf YG, Livney YD. Selective eradication of human non-small cell lung cancer cells using aptamer-decorated nanoparticles harboring a cytotoxic drug cargo. Cell Death Dis 2019; 10:702. [PMID: 31541073 PMCID: PMC6754387 DOI: 10.1038/s41419-019-1870-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 07/16/2019] [Accepted: 07/18/2019] [Indexed: 01/06/2023]
Abstract
Targeted cancer therapy is currently the leading modality to enhance treatment selectivity and efficacy, as well as to minimize untoward toxicity to healthy tissues. Herein, we devised and studied nanoparticles (NPs) composed of the biocompatible block-copolymer PEG-PCL entrapping the hydrophobic chemotherapeutic drug paclitaxel (PTX), which are targeted to human non-small cell lung cancer (NSCLC) cells. To achieve selective NSCLC targeting, these NPs were decorated with single-stranded oligonucleotide-based S15 aptamers (S15-APTs), which we have recently shown to serve as efficient tumor cell targeting ligands. Prepared without using surfactants, these 15 nm PEG-PCL/PTX NPs entered NSCLC cells via clathrin-mediated endocytosis. These NPs demonstrated efficient encapsulation of PTX, high selectivity to- and potent eradication of human A549 NSCLC cells, with a remarkable half maximal inhibitory concentration (IC50) of 0.03 μM PTX. In contrast, very high IC50 values of 1.7, 4.2, 43, 87, and 980 µM PTX were obtained towards normal human bronchial epithelial BEAS2B, cervical carcinoma HeLa, colon adenocarcinoma CaCo-2, neonatal foreskin fibroblast FSE, and human embryonic kidney HEK-293 cells, respectively. These results demonstrate 2–5 orders of magnitude difference in the selective cytotoxicity towards NSCLCs, reflecting a potentially outstanding therapeutic window. Moreover, the dual utility of aptamer-decorated NPs for both drug stabilization and selective tumor targeting was studied by increasing APT concentrations during NP “decoration”. The optimal aptamer density on the surface of NPs for selective targeting, for high fluorescence diagnostic signal and for maintaining small particle size to enable endocytosis, was achieved by using 30 nM APTs during NP decoration. Collectively, our findings suggest that these APT-decorated NPs hold great preclinical promise in selective targeting and eradication of human NSCLC cells without harming normal tissues.
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Affiliation(s)
- Shira Engelberg
- The Laboratory of Biopolymers for Food and Health, Department of Biotechnology and Food Engineering, Technion - Israel Institute of Technology, 3200000, Haifa, Israel
| | - Einat Netzer
- The Laboratory of Biopolymers for Food and Health, Department of Biotechnology and Food Engineering, Technion - Israel Institute of Technology, 3200000, Haifa, Israel
| | - Yehuda G Assaraf
- The Fred Wyszkowski Cancer Research Laboratory, Department of Biology, Technion - Israel Institute of Technology, 3200000, Haifa, Israel.
| | - Yoav D Livney
- The Laboratory of Biopolymers for Food and Health, Department of Biotechnology and Food Engineering, Technion - Israel Institute of Technology, 3200000, Haifa, Israel.
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16
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Rashid M, Malik MY, Singh SK, Chaturvedi S, Gayen JR, Wahajuddin M. Bioavailability Enhancement of Poorly Soluble Drugs: The Holy Grail in Pharma Industry. Curr Pharm Des 2019; 25:987-1020. [DOI: 10.2174/1381612825666190130110653] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Accepted: 01/24/2019] [Indexed: 02/07/2023]
Abstract
Background:
Bioavailability, one of the prime pharmacokinetic properties of a drug, is defined as the
fraction of an administered dose of unchanged drug that reaches the systemic circulation and is used to describe
the systemic availability of a drug. Bioavailability assessment is imperative in order to demonstrate whether the
drug attains the desirable systemic exposure for effective therapy. In recent years, bioavailability has become
the subject of importance in drug discovery and development studies.
Methods:
A systematic literature review in the field of bioavailability and the approaches towards its enhancement
have been comprehensively done, purely focusing upon recent papers. The data mining was performed
using databases like PubMed, Science Direct and general Google searches and the collected data was exhaustively
studied and summarized in a generalized manner.
Results:
The main prospect of this review was to generate a comprehensive one-stop summary of the numerous
available approaches and their pharmaceutical applications in improving the stability concerns, physicochemical
and mechanical properties of the poorly water-soluble drugs which directly or indirectly augment their bioavailability.
Conclusion:
The use of novel methods, including but not limited to, nano-based formulations, bio-enhancers,
solid dispersions, lipid-and polymer-based formulations which provide a wide range of applications not only
increases the solubility and permeability of the poorly bioavailable drugs but also improves their stability, and
targeting efficacy. Although, these methods have drastically changed the pharmaceutical industry demand for the
newer potential methods with better outcomes in the field of pharmaceutical science to formulate various dosage
forms with adequate systemic availability and improved patient compliance, further research is required.
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Affiliation(s)
- Mamunur Rashid
- Pharmaceutics and Pharmacokinetics Division, CSIR-CDRI, Lucknow, India
| | - Mohd Yaseen Malik
- Pharmaceutics and Pharmacokinetics Division, CSIR-CDRI, Lucknow, India
| | - Sandeep K. Singh
- Pharmaceutics and Pharmacokinetics Division, CSIR-CDRI, Lucknow, India
| | - Swati Chaturvedi
- Pharmaceutics and Pharmacokinetics Division, CSIR-CDRI, Lucknow, India
| | - Jiaur R Gayen
- Pharmaceutics and Pharmacokinetics Division, CSIR-CDRI, Lucknow, India
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17
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Molecular understanding of interactions, structure, and drug encapsulation efficiency of Pluronic micelles from dissipative particle dynamics simulations. Colloid Polym Sci 2019. [DOI: 10.1007/s00396-019-04535-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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18
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Toncheva-Moncheva N, Bakardzhiev P, Rangelov S, Trzebicka B, Forys A, Petrov PD. Linear Amphiphilic Polyglycidol/Poly(ε-caprolactone) Block Copolymers Prepared via “Click” Chemistry-Based Concept. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00366] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Natalia Toncheva-Moncheva
- Institute of Polymers, Bulgarian Academy of Sciences, Akad. G. Bonchev St. 103A, 1113 Sofia, Bulgaria
| | - Pavel Bakardzhiev
- Institute of Polymers, Bulgarian Academy of Sciences, Akad. G. Bonchev St. 103A, 1113 Sofia, Bulgaria
| | - Stanislav Rangelov
- Institute of Polymers, Bulgarian Academy of Sciences, Akad. G. Bonchev St. 103A, 1113 Sofia, Bulgaria
| | - Barbara Trzebicka
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland
| | - Aleksander Forys
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland
| | - Petar D. Petrov
- Institute of Polymers, Bulgarian Academy of Sciences, Akad. G. Bonchev St. 103A, 1113 Sofia, Bulgaria
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19
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Yorulmaz Avsar S, Kyropoulou M, Di Leone S, Schoenenberger CA, Meier WP, Palivan CG. Biomolecules Turn Self-Assembling Amphiphilic Block Co-polymer Platforms Into Biomimetic Interfaces. Front Chem 2019; 6:645. [PMID: 30671429 PMCID: PMC6331732 DOI: 10.3389/fchem.2018.00645] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 12/11/2018] [Indexed: 12/29/2022] Open
Abstract
Biological membranes constitute an interface between cells and their surroundings and form distinct compartments within the cell. They also host a variety of biomolecules that carry out vital functions including selective transport, signal transduction and cell-cell communication. Due to the vast complexity and versatility of the different membranes, there is a critical need for simplified and specific model membrane platforms to explore the behaviors of individual biomolecules while preserving their intrinsic function. Information obtained from model membrane platforms should make invaluable contributions to current and emerging technologies in biotechnology, nanotechnology and medicine. Amphiphilic block co-polymers are ideal building blocks to create model membrane platforms with enhanced stability and robustness. They form various supramolecular assemblies, ranging from three-dimensional structures (e.g., micelles, nanoparticles, or vesicles) in aqueous solution to planar polymer membranes on solid supports (e.g., polymer cushioned/tethered membranes,) and membrane-like polymer brushes. Furthermore, polymer micelles and polymersomes can also be immobilized on solid supports to take advantage of a wide range of surface sensitive analytical tools. In this review article, we focus on self-assembled amphiphilic block copolymer platforms that are hosting biomolecules. We present different strategies for harnessing polymer platforms with biomolecules either by integrating proteins or peptides into assemblies or by attaching proteins or DNA to their surface. We will discuss how to obtain synthetic structures on solid supports and their characterization using different surface sensitive analytical tools. Finally, we highlight present and future perspectives of polymer micelles and polymersomes for biomedical applications and those of solid-supported polymer membranes for biosensing.
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20
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Di Mauro PP, Cascante A, Brugada Vilà P, Gómez-Vallejo V, Llop J, Borrós S. Peptide-functionalized and high drug loaded novel nanoparticles as dual-targeting drug delivery system for modulated and controlled release of paclitaxel to brain glioma. Int J Pharm 2018; 553:169-185. [DOI: 10.1016/j.ijpharm.2018.10.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 09/18/2018] [Accepted: 10/08/2018] [Indexed: 12/24/2022]
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21
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Effects of stability of PEGylated micelles on the accelerated blood clearance phenomenon. Drug Deliv Transl Res 2018; 9:66-75. [DOI: 10.1007/s13346-018-0588-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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22
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Li X, Cooksey TJ, Kidd BE, Robertson ML, Madsen LA. Mapping Coexistence Phase Diagrams of Block Copolymer Micelles and Free Unimer Chains. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01220] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiuli Li
- Department of Chemistry and Macromolecules Innovation Institute, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Tyler J. Cooksey
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77004, United States
| | - Bryce E. Kidd
- Department of Chemistry and Macromolecules Innovation Institute, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Megan L. Robertson
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77004, United States
| | - Louis A. Madsen
- Department of Chemistry and Macromolecules Innovation Institute, Virginia Tech, Blacksburg, Virginia 24061, United States
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23
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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: 105] [Impact Index Per Article: 17.5] [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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24
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Varshosaz J, Enteshari S, Hassanzadeh F, Hashemi-Beni B, Minaiyan M, Mirsafaei R. Synthesis, in vitro characterization, and anti-tumor effects of novel polystyrene-poly(amide-ether-ester-imide) co-polymeric micelles for delivery of docetaxel in breast cancer in Balb/C mice. Drug Dev Ind Pharm 2018; 44:1139-1157. [PMID: 29436875 DOI: 10.1080/03639045.2018.1438462] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
OBJECTIVE The goal of the present work was to make novel co-polymeric micellar carriers for the delivery of docetaxel (DTX). SIGNIFICANCE Co-polymeric micelles can not only solubilize DTX and eliminate the need for toxic surfactants to dissolve it, but also cause passive targeting of the drug to the tumor and reduce its toxic side effects. METHODS Poly(styrene-maleic acid) (SMA) was conjugated to poly (amide-ether-ester-imide)-poly ethylene glycol (PAEEI-PEG). Copolymer synthesis was proven by Fourier transform infrared (FTIR) and 1H-nuclear magnetic resonance (1H-NMR). The SMA-PAEEI-PEG micelles loaded with DTX were prepared and their critical micelle concentration (CMC), zeta potential, particle size, entrapment efficiency, and their release efficiency were studied. MCF-7 and MDA-MB231 breast cancer cells were used to evaluate the cellular uptake and cytotoxicity of the micelles. The antitumor activity of the DTX-loaded nanomicelles was measured in Balb/c mice. RESULTS The FTIR and HNMR spectroscopy confirmed successful conjugation of SMA and PAEEI-PEG. The drug loading efficiency was in the range of 34.01-72.75% and drug release lasted for 120 h. The CMC value of the micelles was affected by the SMA/PAEEI-PEG ratio and was in the range of 29.85-14.28 µg/ml. The DTX-loaded micelles showed five times more cytotoxicity than the free drug. The DTX loaded micelles were more effective in tumor growth suppression in vivo and the animals showed an enhanced rate of survival. CONCLUSION The results show that the SMA-PAEEI-PEG micelles of DTX could potentially provide a suitable parenteral formulation with more stability, higher cytotoxicity, and improved antitumor activity.
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Affiliation(s)
- Jaleh Varshosaz
- a Department of Pharmaceutics, School of Pharmacy and Novel Drug Delivery Systems Research Centre , Isfahan University of Medical Sciences , Isfahan , Iran
| | - Saeede Enteshari
- a Department of Pharmaceutics, School of Pharmacy and Novel Drug Delivery Systems Research Centre , Isfahan University of Medical Sciences , Isfahan , Iran
| | - Farshid Hassanzadeh
- b Department of Pharmaceutical Chemistry, School of Pharmacy , Isfahan University of Medical Sciences , Isfahan , Iran
| | - Batool Hashemi-Beni
- c Department of Anatomical Sciences and Dental Research Center, School of Medicine , Isfahan University of Medical Sciences , Isfahan , Iran
| | - Mohsen Minaiyan
- d Department of Pharmacology, School of Pharmacy , Isfahan University of Medical Sciences , Isfahan , Iran
| | - Razieh Mirsafaei
- a Department of Pharmaceutics, School of Pharmacy and Novel Drug Delivery Systems Research Centre , Isfahan University of Medical Sciences , Isfahan , Iran
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25
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Muddineti OS, Vanaparthi A, Rompicharla SVK, Kumari P, Ghosh B, Biswas S. Cholesterol and vitamin E-conjugated PEGylated polymeric micelles for efficient delivery and enhanced anticancer activity of curcumin: evaluation in 2D monolayers and 3D spheroids. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2018; 46:773-786. [PMID: 29426248 DOI: 10.1080/21691401.2018.1435551] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A newly synthesized PEGylated cholesterol/α-tocopheryl succinate (α-TOS) linked polymer (CV) was self-assembled and loaded with curcumin to form a micellar system (C-CVM). The tri-functionalized amphiphilic polymer was constituted of hydrophobic cholesterol and α-TOS connected to hydrophilic PEG via a lysine linker. The synthesized polymer and the micelles were characterized by 1H NMR, DLS, zeta potentiometer, TEM, CMC determination and hemolysis studies. CVM displayed low CMC value of 15 µM with extent of hemolysis as less than 4%. The stable C-CVM with optimum % drug loading (14.2 ± 0.24) displayed Z average of 175.8 ± 0.68 nm with PDI (0.248 ± 0.075) and released curcumin in sustained manner in the in vitro drug release study. C-CVM demonstrated dose-dependent cellular uptake and cytotoxicity in murine melanoma, B16F10 and human breast cancer, MDA-MB-231 cell lines. CV exhibited marked reversal of drug resistance as indicated by significantly higher retention of P-glycoprotein substrate, rhodamine-123 in the resistant B16F10 cell line compared to standard P-glycoprotein inhibitor, verapamil. C-CVM demonstrated significantly higher spheroidal growth inhibition compared to C-PPM. The results provide strong evidence for CVM as promising drug delivery system and confirm the potential of C-CVM as chemotherapy in cancer.
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Affiliation(s)
- Omkara Swami Muddineti
- a Department of Pharmacy , Birla Institute of Technology & Science-Pilani, Hyderabad Campus , Hyderabad , India
| | - Asmitha Vanaparthi
- a Department of Pharmacy , Birla Institute of Technology & Science-Pilani, Hyderabad Campus , Hyderabad , India
| | | | - Preeti Kumari
- a Department of Pharmacy , Birla Institute of Technology & Science-Pilani, Hyderabad Campus , Hyderabad , India
| | - Balaram Ghosh
- a Department of Pharmacy , Birla Institute of Technology & Science-Pilani, Hyderabad Campus , Hyderabad , India
| | - Swati Biswas
- a Department of Pharmacy , Birla Institute of Technology & Science-Pilani, Hyderabad Campus , Hyderabad , India
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26
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Bansal KK, Gupta J, Rosling A, Rosenholm JM. Renewable poly(δ-decalactone) based block copolymer micelles as drug delivery vehicle: in vitro and in vivo evaluation. Saudi Pharm J 2018; 26:358-368. [PMID: 29556127 PMCID: PMC5856948 DOI: 10.1016/j.jsps.2018.01.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 01/22/2018] [Indexed: 12/24/2022] Open
Abstract
Polymers from natural resources are attracting much attention in various fields including drug delivery as green alternatives to fossil fuel based polymers. In this quest, novel block copolymers based on renewable poly(δ-decalactone) (PDL) were evaluated for their drug delivery capabilities and compared with a fossil fuel based polymer i.e. methoxy-poly(ethylene glycol)-b-poly(ε-caprolactone) (mPEG-b-PCL). Using curcumin as a hydrophobic drug model, micelles of PDL block copolymers with different orientation i.e. AB (mPEG-b-PDL), ABA (PDL-b-PEG-b-PDL), ABC (mPEG-b-PDL-b-poly(pentadecalactone) and (mPEG-b-PCL) were prepared by nanoprecipitation method. The size, drug loading and curcumin stability studies results indicated that mPEG-b-PDL micelles was comparable to its counterpart mPEG-b-PCL micelles towards improved delivery of curcumin. Therefore, mixed micelles using these two copolymers were also evaluated to see any change in size, loading and drug release. Drug release studies proposed that sustained release can be obtained using poly(pentadecalactone) as crystalline core whereas rapid release can be achieved using amorphous PDL core. Further, mPEG-b-PDL micelles were found to be non-haemolytic, up to the concentration of 40 mg/mL. In vivo toxicity studies on rats advised low-toxic behaviour of these micelles up to 400 mg/kg dose, as evident by histopathological and biochemical analysis. In summary, it is anticipated that mPEG-b-PDL block copolymer micelles could serve as a renewable alternative for mPEG-b-PCL copolymers in drug delivery applications.
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Affiliation(s)
- Kuldeep K Bansal
- School of Pharmacy, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom.,Institute of Pharmaceutical Research, GLA University, Mathura, Uttar Pradesh 281406, India.,Laboratory of Polymer Technology, Centre of Excellence in Functional Materials at Biological Interfaces, Åbo Akademi University, Biskopsgatan 8, 20500 Turku, Finland.,Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering, Abo Akademi University, 20520 Turku, Finland
| | - Jitendra Gupta
- Institute of Pharmaceutical Research, GLA University, Mathura, Uttar Pradesh 281406, India
| | - Ari Rosling
- Laboratory of Polymer Technology, Centre of Excellence in Functional Materials at Biological Interfaces, Åbo Akademi University, Biskopsgatan 8, 20500 Turku, Finland
| | - Jessica M Rosenholm
- Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering, Abo Akademi University, 20520 Turku, Finland
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Varshosaz J, Taymouri S, Minaiyan M, Rastegarnasab F, Baradaran A. Development and in vitro/in vivo evaluation of HPMC/chitosan gel containing simvastatin loaded self-assembled nanomicelles as a potent wound healing agent. Drug Dev Ind Pharm 2017; 44:276-288. [DOI: 10.1080/03639045.2017.1391832] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jaleh Varshosaz
- Department of Pharmaceutics, School of Pharmacy and Novel Drug Delivery Systems Research Centre, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Somayeh Taymouri
- Department of Pharmaceutics, School of Pharmacy and Novel Drug Delivery Systems Research Centre, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohsen Minaiyan
- Department of Pharmacology, School of Pharmacy, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Fatemeh Rastegarnasab
- Department of Pharmaceutics, School of Pharmacy and Novel Drug Delivery Systems Research Centre, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Azar Baradaran
- Department of Pathology, Isfahan University of Medical Sciences, Isfahan, Iran
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28
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Soni KS, Lei F, Desale SS, Marky LA, Cohen SM, Bronich TK. Tuning polypeptide-based micellar carrier for efficient combination therapy of ErbB2-positive breast cancer. J Control Release 2017; 264:276-287. [PMID: 28870832 DOI: 10.1016/j.jconrel.2017.08.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 08/19/2017] [Accepted: 08/29/2017] [Indexed: 11/30/2022]
Affiliation(s)
- Kruti S Soni
- Department of Pharmaceutical Sciences, Center for Drug Delivery and Nanomedicine, College of Pharmacy, University of Nebraska Medical Center, 985830 Nebraska Medical Center, Omaha, NE 68198-5830, USA
| | - Fan Lei
- Department of Pharmaceutical Sciences, Center for Drug Delivery and Nanomedicine, College of Pharmacy, University of Nebraska Medical Center, 985830 Nebraska Medical Center, Omaha, NE 68198-5830, USA
| | - Swapnil S Desale
- Department of Pharmaceutical Sciences, Center for Drug Delivery and Nanomedicine, College of Pharmacy, University of Nebraska Medical Center, 985830 Nebraska Medical Center, Omaha, NE 68198-5830, USA
| | - Luis A Marky
- Department of Pharmaceutical Sciences, Center for Drug Delivery and Nanomedicine, College of Pharmacy, University of Nebraska Medical Center, 985830 Nebraska Medical Center, Omaha, NE 68198-5830, USA; Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, 985950 Nebraska Medical Center, Omaha, NE 68198-5950, USA
| | - Samuel M Cohen
- Department of Pathology and Microbiology, University of Nebraska Medical Center/Fred and Pamela Buffet Cancer Center, Omaha, NE 68198-3135, USA
| | - Tatiana K Bronich
- Department of Pharmaceutical Sciences, Center for Drug Delivery and Nanomedicine, College of Pharmacy, University of Nebraska Medical Center, 985830 Nebraska Medical Center, Omaha, NE 68198-5830, USA; Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, 985950 Nebraska Medical Center, Omaha, NE 68198-5950, USA.
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29
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Photoenhanced gene transfection by a curcumin loaded CS-g-PZLL micelle. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 78:18-23. [DOI: 10.1016/j.msec.2017.04.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 03/31/2017] [Accepted: 04/02/2017] [Indexed: 11/17/2022]
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Synthesis and characterization of redox-sensitive heparin-β-sitosterol micelles: Their application as carriers for the pharmaceutical agent, doxorubicin, and investigation of their antimetastatic activities in vitro. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 75:1326-1338. [DOI: 10.1016/j.msec.2017.03.052] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 12/28/2016] [Accepted: 03/06/2017] [Indexed: 01/13/2023]
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A pH-sensitive micelle composed of heparin, phospholipids, and histidine as the carrier of photosensitizers: Application to enhance photodynamic therapy of cancer. Int J Biol Macromol 2017; 98:125-138. [DOI: 10.1016/j.ijbiomac.2017.01.103] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 01/12/2017] [Accepted: 01/23/2017] [Indexed: 11/19/2022]
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Wang H, Li Y, Zhang M, Wu D, Shen Y, Tang G, Ping Y. Redox-Activatable ATP-Depleting Micelles with Dual Modulation Characteristics for Multidrug-Resistant Cancer Therapy. Adv Healthc Mater 2017; 6. [PMID: 28152267 DOI: 10.1002/adhm.201601293] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 01/08/2017] [Indexed: 11/12/2022]
Abstract
A fast adenosine triphosphate (ATP)-depleting micellar system that is activated by intracellular redox for the codelivery of anticancer drug paclitaxel (PTX) and small interference RNA (siRNA) targeting polo-like kinase1 (PLK1) is developed to address the key challenges of multidrug-resistant (MDR) cancer therapy. The ATP-depleting micelle is self-assembled from a redox-responsive amphiphilic polymer (termed as bPEG-SS-P123-PEI (PSPP)) that is composed of biocompatible branched polyethylene glycol (PEG) with 8 arms (bPEG), ATP-depleting Pluronic P123 (P123), and cationic low molecular weight polyethylenimine (PEI) blocks. Upon critical micelle concentration, the PSPP unimer self-assembles into a well-ordered multilayered nanostructure and is able to load PTX and siRNA targeting PLK1. The cleavage of disulfide linkages at intracellular glutathione-rich reduction milieu not only promotes PTX and siRNA release, but also activates the fast ATP-depletion action that is critical in preventing intracellular PTX efflux by multidrug-resistant cancer cells. The combination of ATP depletion and siRNA inhibition by PSPP micelles is found to provide dual modulations for resensitizing multidrug-resistant cancer cells for PTX treatment. As a result, the codelivery of PTX and PLK1 siRNA exerts a stronger combinational effect against tumor growth in MDR tumor models in vivo. The development of fast ATP-depleting nanomicelle represents an original delivery strategy for the distinctive dual modulation of cancer MDR with spatial and temporal control.
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MESH Headings
- Adenosine Triphosphate/metabolism
- Animals
- Cell Cycle Proteins/antagonists & inhibitors
- Cell Cycle Proteins/genetics
- Cell Cycle Proteins/metabolism
- Cell Line, Tumor
- Drug Delivery Systems/methods
- Drug Resistance, Multiple/drug effects
- Drug Resistance, Multiple/genetics
- Drug Resistance, Neoplasm/drug effects
- Drug Resistance, Neoplasm/genetics
- HEK293 Cells
- Humans
- Mice
- Mice, Inbred BALB C
- Micelles
- Neoplasms, Experimental/drug therapy
- Neoplasms, Experimental/metabolism
- Neoplasms, Experimental/pathology
- Oxidation-Reduction
- Paclitaxel/pharmacology
- Protein Serine-Threonine Kinases/antagonists & inhibitors
- Protein Serine-Threonine Kinases/genetics
- Protein Serine-Threonine Kinases/metabolism
- Proto-Oncogene Proteins/antagonists & inhibitors
- Proto-Oncogene Proteins/genetics
- Proto-Oncogene Proteins/metabolism
- RNA, Small Interfering/genetics
- RNA, Small Interfering/pharmacology
- Polo-Like Kinase 1
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Affiliation(s)
- Hebin Wang
- Department of Chemistry, Zhejiang University, Hangzhou, 310028, China
- College of life Sciences, Tarim University, Alar, 843300, China
| | - Yang Li
- Department of Chemistry, Zhejiang University, Hangzhou, 310028, China
| | - Miaozun Zhang
- Department of General Surgery, Ningbo Li Huili Hospital, Medical School of Ningbo University, Ningbo, 315040, China
| | - Di Wu
- Department of Chemistry, Zhejiang University, Hangzhou, 310028, China
| | - Youqing Shen
- Center for Bionanoengineering and State Key Laboratory for Chemical Engineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Guping Tang
- Department of Chemistry, Zhejiang University, Hangzhou, 310028, China
| | - Yuan Ping
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
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Gulfam M, Matini T, Monteiro PF, Riva R, Collins H, Spriggs K, Howdle SM, Jérôme C, Alexander C. Bioreducible cross-linked core polymer micelles enhance in vitro activity of methotrexate in breast cancer cells. Biomater Sci 2017; 5:532-550. [DOI: 10.1039/c6bm00888g] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
PEG-poly(caprolactone) co-polymers with disulfide-linked cores are highly efficient for delivery of the anti-cancer drug methotrexate in vitro.
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Affiliation(s)
- Muhammad Gulfam
- School of Pharmacy
- University of Nottingham
- UK
- Center for Education and Research on Macromolecules (CERM)
- University of Liège
| | | | | | - Raphaël Riva
- Center for Education and Research on Macromolecules (CERM)
- University of Liège
- 4000 Liège
- Belgium
| | | | | | | | - Christine Jérôme
- Center for Education and Research on Macromolecules (CERM)
- University of Liège
- 4000 Liège
- Belgium
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Jia T, Huang S, Yang C, Wang M. Unimolecular micelles of pH-responsive star-like copolymers for co-delivery of anticancer drugs and small-molecular photothermal agents: a new drug-carrier for combinational chemo/photothermal cancer therapy. J Mater Chem B 2017; 5:8514-8524. [DOI: 10.1039/c7tb01657c] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Robust unimolecular micelles of amphiphilic pH-responsive starlike copolymers that carry anticancer drugs and photothermal agents show enhanced therapeutic effect against cancer cells.
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Affiliation(s)
- Tao Jia
- School of Chemical and Biomedical Engineering
- Nanyang Technological University
- 637459 Singapore
| | - Shuo Huang
- School of Chemical and Biomedical Engineering
- Nanyang Technological University
- 637459 Singapore
| | - Cangjie Yang
- School of Chemical and Biomedical Engineering
- Nanyang Technological University
- 637459 Singapore
| | - Mingfeng Wang
- School of Chemical and Biomedical Engineering
- Nanyang Technological University
- 637459 Singapore
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35
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Kakde D, Taresco V, Bansal KK, Magennis EP, Howdle SM, Mantovani G, Irvine DJ, Alexander C. Amphiphilic block copolymers from a renewable ε-decalactone monomer: prediction and characterization of micellar core effects on drug encapsulation and release. J Mater Chem B 2016; 4:7119-7129. [PMID: 32263649 DOI: 10.1039/c6tb01839d] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Here we describe a methoxy poly(ethyleneglycol)-b-poly(ε-decalactone) (mPEG-b-PεDL) copolymer and investigate the potential of the copolymer as a vehicle for solubilisation and sustained release of indomethacin (IND). The indomethacin loading and release from mPEG-b-PεDL micelles (amorphous cores) was compared against methoxy poly(ethyleneglycol)-b-poly(ε-caprolactone)(mPEG-b-PCL) micelles (semicrystalline cores). The drug-polymer compatibility was determined through a theoretical approach to predict drug incorporation into hydrated micelles. Polymer micelles were prepared by solvent evaporation and characterised for size, morphology, indomethacin loading and release. All the formulations generated spherical micelles but significantly larger mPEG-b-PεDL micelles were observed compared to mPEG-b-PCL micelles. A higher compatibility of the drug was predicted for PCL cores based on Flory-Huggins interaction parameters (χsp) using the Hansen solubility parameter (HSP) approach, but higher measured drug loadings were found in micelles with PεDL cores compared to PCL cores. This we attribute to the higher amorphous content in the PεDL-rich regions which generated higher micellar core volumes. Drug release studies showed that the semicrystalline PCL core was able to release IND over a longer period (80% drug release in 110 h) compared to PεDL core micelles (80% drug release in 72 h).
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Affiliation(s)
- Deepak Kakde
- School of Pharmacy, University of Nottingham, University Park, Nottingham, NG7 2RD, UK.
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36
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Jeevanandam J, Chan YS, Danquah MK. Nano-formulations of drugs: Recent developments, impact and challenges. Biochimie 2016; 128-129:99-112. [PMID: 27436182 DOI: 10.1016/j.biochi.2016.07.008] [Citation(s) in RCA: 93] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 07/15/2016] [Indexed: 12/13/2022]
Abstract
Nano-formulations of medicinal drugs have attracted the interest of many researchers for drug delivery applications. These nano-formulations enhance the properties of conventional drugs and are specific to the targeted delivery site. Dendrimers, polymeric nanoparticles, liposomes, nano-emulsions and micelles are some of the nano-formulations that are gaining prominence in pharmaceutical industry for enhanced drug formulation. Wide varieties of synthesis methods are available for the preparation of nano-formulations to deliver drugs in biological system. The choice of synthesis methods depend on the size and shape of particulate formulation, biochemical properties of drug, and the targeted site. This article discusses recent developments in nano-formulation and the progressive impact on pharmaceutical research and industries. Additionally, process challenges relating to consistent generation of nano-formulations for drug delivery are discussed.
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Affiliation(s)
- Jaison Jeevanandam
- Department of Chemical Engineering, Faculty of Engineering and Science, Curtin University, CDT 250, 98009, Miri, Sarawak, Malaysia
| | - Yen San Chan
- Department of Chemical Engineering, Faculty of Engineering and Science, Curtin University, CDT 250, 98009, Miri, Sarawak, Malaysia.
| | - Michael K Danquah
- Department of Chemical Engineering, Faculty of Engineering and Science, Curtin University, CDT 250, 98009, Miri, Sarawak, Malaysia
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37
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Hybrid anisotropic nanostructures for dual-modal cancer imaging and image-guided chemo-thermo therapies. Biomaterials 2016; 103:265-277. [PMID: 27394161 DOI: 10.1016/j.biomaterials.2016.06.063] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 06/12/2016] [Accepted: 06/29/2016] [Indexed: 01/26/2023]
Abstract
The multimodality theranostic system, which can integrate two or more different therapeutic modalities and multimodal imaging agents into a nanoentity, shows great promising prospects for the cancer treatment. Herein, we developed an efficient and novel strategy to synthesize hybrid anisotropic nanoparticles (HANs) with intrinsic multimodal theranostic capability [chemotherapy, photothermal therapy, magnetic resonance imaging (MRI), and photoacoustic imaging (PAI)]. For the first time, under the guidance of MRI and PAI, the chemotherapy and thermotherapy induced by administration of multifunctional hybrid nanoprobes were applied simultaneously to the treatment of colon cancer-bearing mice in vivo.
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38
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Thangavel S, Yoshitomi T, Sakharkar MK, Nagasaki Y. Redox nanoparticle increases the chemotherapeutic efficiency of pioglitazone and suppresses its toxic side effects. Biomaterials 2016; 99:109-23. [PMID: 27235996 DOI: 10.1016/j.biomaterials.2016.05.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2015] [Revised: 04/26/2016] [Accepted: 05/02/2016] [Indexed: 02/03/2023]
Abstract
Pioglitazone is a widely used anti-diabetic drug that induces cytotoxicity in cancer cells; however, its clinical use is questioned due to its associated liver toxicity caused by increased oxidative stress. We therefore employed nitroxide-radical containing nanoparticle, termed redox nanoparticle (RNP(N)) which is an effective scavenger of reactive oxygen species (ROS) as a drug carrier. RNP(N) encapsulation increased pioglitazone solubility, thus increasing cellular uptake of encapsulated pioglitazone which reduced the dose required to induce toxicity in prostate cancer cell lines. Investigation of in vitro molecular mechanism of pioglitazone revealed that both apoptosis and cell cycle arrest were involved in tumor cell death. In addition, intravenously administered pioglitazone-loaded RNP(N) produced significant tumor volume reduction in vivo due to enhanced permeation and retention effect. Most importantly, oxidative damage caused by pioglitazone in the liver was significantly suppressed by pioglitazone-loaded RNP(N) due to the presence of nitroxide radicals. It is interesting to note that oral administration of encapsulated pioglitazone, and co-administration of RNP(N) and pioglitazone, i.e., no encapsulation of pioglitazone in RNP(N) also significantly contributed to suppression of the liver injury. Therefore, use of RNP(N) either as an adjuvant or as a carrier for drugs with severe side effects is a promising chemotherapeutic strategy.
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Affiliation(s)
- Sindhu Thangavel
- Department of Materials Sciences, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8573, Japan
| | - Toru Yoshitomi
- Department of Materials Sciences, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8573, Japan
| | - Meena Kishore Sakharkar
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Tennodai 1-1-1, Ibaraki 305-8572, Japan
| | - Yukio Nagasaki
- Department of Materials Sciences, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8573, Japan; Master's School of Medical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tennoudai 1-1-1, Tsukuba, Ibaraki 305-8573, Japan; Satellite Laboratory, International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), University of Tsukuba, Tennoudai 1-1-1, Tsukuba, Ibaraki 305-8573, Japan.
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39
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Bains A, Wulff JE, Moffitt MG. Microfluidic synthesis of dye-loaded polycaprolactone-block-poly(ethylene oxide) nanoparticles: Insights into flow-directed loading and in vitro release for drug delivery. J Colloid Interface Sci 2016; 475:136-148. [PMID: 27163840 DOI: 10.1016/j.jcis.2016.04.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 04/08/2016] [Accepted: 04/09/2016] [Indexed: 01/06/2023]
Abstract
Using the fluorescent probe dye 1,1'-dioctadecyl-3,3,3',3'-tetramethylindocarbocyanine perchlorate (DiI) as a surrogate for hydrophobic drugs, we investigate the effects of water content and on-chip flow rate on the multiscale structure, loading and release properties of DiI-loaded poly(ε-caprolactone)-block-poly(ethylene oxide) (PCL-b-PEO) nanoparticles produced in a gas-liquid segmented microfluidic device. We find a linear increase in PCL crystallinity within the nanoparticle cores with increasing flow rate, while mean nanoparticle sizes first decrease and then increase with flow rate coincident with the disappearance and reappearance of long filament nanoparticles. Loading efficiencies at the lower water content (cwc+10wt%) are generally higher (up to 94%) compared to loading efficiencies (up to 53%) at the higher water content (cwc+75wt%). In vitro release times range between ∼2 and 4days for nanoparticles produced at cwc+10wt% and >15days for nanoparticles produced at cwc+75wt%. At the lower water content, slower release of DiI is found for nanoparticles produced at higher flow rate, while at high water content, release times first decrease and then increase with flow rate. Finally, we investigate the effects of the chemical and physical characteristics of the release medium on the kinetics of in vitro DiI release and nanoparticle degradation. This work demonstrates the general utility of dye-loaded nanoparticles as model systems for screening chemical and flow conditions for producing drug delivery formulations within microfluidic devices.
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Affiliation(s)
- Aman Bains
- Department of Chemistry, University of Victoria, P.O. Box 3065, Victoria, BC V8W 3V6, Canada
| | - Jeremy E Wulff
- Department of Chemistry, University of Victoria, P.O. Box 3065, Victoria, BC V8W 3V6, Canada
| | - Matthew G Moffitt
- Department of Chemistry, University of Victoria, P.O. Box 3065, Victoria, BC V8W 3V6, Canada.
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40
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Taymouri S, Varshosaz J, Hassanzadeh F, Haghjooy Javanmard S, Dana N. Optimisation of processing variables effective on self-assembly of folate targeted Synpronic-based micelles for docetaxel delivery in melanoma cells. IET Nanobiotechnol 2016; 9:306-13. [PMID: 26435285 DOI: 10.1049/iet-nbt.2014.0076] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Polymeric micelles (PMs) were formulated as nano carriers for docetaxel intended for both intravenous administration and improve therapeutic efficacy of the drug. The PMs were formulated using folic acid conjugated Synpronic F127-cholesterol copolymer and were optimised using a 2(3) full factorial design. The effects of different formulation variables were evaluated on the particle size, entrapment efficiency (EE), zeta potential and release efficiency of the micelles. The in vitro cytotoxicity of DTX-loaded FA targeted micelles was studied on B16F10 melanoma cells which over expressed FA receptor. Among the studied single factors, solvent type was the most effective parameter on the EE and release efficiency. Polymer/drug ratio had the most considerable effect on the particle size while, zeta potential was more affected by temperature. Finally, the PMs with polymer/drug ratio of 12 prepared at 25°C by dimethyl sulfoxide as the dialyzing solvent was shown to be the optimum formulation with desirability factor of 84.9%. The optimised formulation exhibited a particle size of 171.3 nm, 99.59% drug EE, zeta potential of -7.80 mV, drug release efficiency of about 70% at 144 h and polydispersity index of 0.32. The MTT assay indicated DTX-loaded FA targeted micelles were significantly more cytotoxic than non-targeted micelles and free drug.
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Affiliation(s)
- Somayeh Taymouri
- Department of Pharmaceutics, School of Pharmacy and Novel Drug Delivery Systems Research Centre, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Jaleh Varshosaz
- Department of Pharmaceutics, School of Pharmacy and Novel Drug Delivery Systems Research Centre, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Farshid Hassanzadeh
- Department of Medicinal Chemistry, School of Pharmacy, Isfahan University of Medical Sciences, Isfahan, Iran
| | | | - Nasim Dana
- Physiology Research Center, Isfahan University of medical sciences, Isfahan, Iran
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41
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Mehanny M, Hathout RM, Geneidi AS, Mansour S. Bisdemethoxycurcumin loaded polymeric mixed micelles as potential anti-cancer remedy: Preparation, optimization and cytotoxic evaluation in a HepG-2 cell model. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2015.12.007] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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42
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Biswas S, Kumari P, Lakhani PM, Ghosh B. Recent advances in polymeric micelles for anti-cancer drug delivery. Eur J Pharm Sci 2015; 83:184-202. [PMID: 26747018 DOI: 10.1016/j.ejps.2015.12.031] [Citation(s) in RCA: 319] [Impact Index Per Article: 35.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2015] [Revised: 12/08/2015] [Accepted: 12/27/2015] [Indexed: 01/09/2023]
Abstract
Block co-polymeric micelles receive increased attention due to their ability to load therapeutics, deliver the cargo to the site of action, improve the pharmacokinetic of the loaded drug and reduce off-target cytotoxicity. While polymeric micelles can be developed with improved drug loading capabilities by modulating hydrophobicity and hydrophilicity of the micelle forming block co-polymers, they can also be successfully cancer targeted by surface modifying with tumor-homing ligands. However, maintenance of the integrity of the self-assembled system in the circulation and disassembly for drug release at the site of drug action remain a challenge. Therefore, stimuli-responsive polymeric micelles for on demand drug delivery with minimal off-target effect has been developed and extensively investigated to assess their sensitivity. This review focuses on discussing various polymeric micelles currently utilized for the delivery of chemotherapeutic drugs. Designs of various stimuli-sensitive micelles that are able to control drug release in response to specific stimuli, either endogenous or exogenous have been delineated.
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Affiliation(s)
- Swati Biswas
- Birla Institute of Technology and Science-Pilani, Hyderabad, Jawahar Nagar, Shameerpet, Hyderabad 500078, Telangana, India
| | - Preeti Kumari
- Birla Institute of Technology and Science-Pilani, Hyderabad, Jawahar Nagar, Shameerpet, Hyderabad 500078, Telangana, India
| | - Prit Manish Lakhani
- Birla Institute of Technology and Science-Pilani, Hyderabad, Jawahar Nagar, Shameerpet, Hyderabad 500078, Telangana, India
| | - Balaram Ghosh
- Birla Institute of Technology and Science-Pilani, Hyderabad, Jawahar Nagar, Shameerpet, Hyderabad 500078, Telangana, India.
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43
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Laredj-Bourezg F, Bolzinger MA, Pelletier J, Valour JP, Rovère MR, Smatti B, Chevalier Y. Skin delivery by block copolymer nanoparticles (block copolymer micelles). Int J Pharm 2015; 496:1034-46. [DOI: 10.1016/j.ijpharm.2015.11.031] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 11/12/2015] [Accepted: 11/14/2015] [Indexed: 11/29/2022]
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44
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Adesina SK, Akala EO. Nanotechnology Approaches for the Delivery of Exogenous siRNA for HIV Therapy. Mol Pharm 2015; 12:4175-87. [PMID: 26524196 DOI: 10.1021/acs.molpharmaceut.5b00335] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
RNA interference (RNAi) is triggered by oligonucleotides that are about 21-23 nucleotides long and are capable of inducing the destruction of complementary mRNA. The RNAi technique has been successfully utilized to target HIV replication; however, the main limitation to the successful utilization of this technique in vivo is the inability of naked siRNA to cross the cell membrane by diffusion due to its strong anionic charge and large molecular weight. This review describes current nonviral nanotechnological approaches to deliver anti-HIV siRNAs for the treatment of HIV infection.
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Affiliation(s)
- Simeon K Adesina
- Department of Pharmaceutical Sciences, Howard University , Washington, DC 20059, United States
| | - Emmanuel O Akala
- Department of Pharmaceutical Sciences, Howard University , Washington, DC 20059, United States
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45
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Zhang S, Arshad M, Ullah A. Drug encapsulation and release behavior of telechelic nanoparticles. NANOTECHNOLOGY 2015; 26:415703. [PMID: 26404557 DOI: 10.1088/0957-4484/26/41/415703] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The encapsulation and release of hydrophobic drug, carbamazepine (CBZ) was investigated using three previously synthesized amphiphilic Lipid-b-poly(ethylene glycol) (Lipid-PEG) conjugates. Their micellization, drug encapsulation, and release behavior was investigated by dynamic light scattering (DLS), transmission electron microscope (TEM), and fluorescence spectroscopy. The highest capacity of drug entrapment was observed for the CPE-PEG-a telechelic with the shorter PEG block and the size of the nanoparticles decreased evidently after the drug was loaded, while a slight decrease in size was also observed for the CPE-PEG-b telechelic with longer PEG block and the three-armed CPE-GE conjugate. TEM images showed that all three types of the drug-loaded micelles had spherical or near-spherical morphology. In the study of the in vitro drug release, slower drug-release patterns were observed for CPE-PEG-a and CPE-GE micelles. Almost all the drug entrapped inside the three types of micelles could be released within 50 h.
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Affiliation(s)
- Shimiao Zhang
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, T6G 2P5, Canada
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46
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Tao L, Chan JW, Uhrich KE. Drug loading and release kinetics in polymeric micelles: Comparing dynamic versus unimolecular sugar-based micelles for controlled release. J BIOACT COMPAT POL 2015. [DOI: 10.1177/0883911515609814] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Amphiphilic macromolecules, possessing sugar-based hydrophobic and poly(ethylene glycol) hydrophilic domains, provide tunable structures that form effective polymeric micellar drug delivery systems. In this work, we compare traditional dynamic micelles and covalently bound unimolecular amphiphilic macromolecule micelles to study the effects of amphiphilic macromolecule hydrophobic domain branching, micelle architecture, and hydrodynamic volume of two drugs (triclosan and suloctidil) to elucidate the micellar structure–property relationships that govern drug loading and release kinetics. Overall, more hydrophobic micelles with either longer amphiphilic macromolecule alkyl side chains or a higher degree of hydrophobic domain branching exhibited increased triclosan loading compared to less hydrophobic micelles with smaller amphiphilic macromolecule hydrophobic domains. However, varying levels of micelle hydrophobicity did not significantly change suloctidil loading, where only minimal loading differences were seen between micelles with highly hydrophobic and less hydrophobic domains. In both dynamic and unimolecular micelles, the loading extent was primarily drug volume-dependent, where the smaller triclosan molecules demonstrated increased loading and sustained release compared to the larger suloctidil molecules. Unimolecular micelles followed a similar trend with generally higher loading capacities compared to dynamic micelles. Release characteristics for both amphiphilic macromolecule micelle types demonstrated little correlation to the amphiphilic macromolecule chemistry or micelle architecture and were instead primarily drug-dependent, with suloctidil- and triclosan-loaded micelles following the Korsmeyer–Peppas and Weibull models, respectively. The micelle structure–property relationships identified herein allow for improved drug–micelle compatibility to optimize drug delivery systems for poorly water-soluble drugs.
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Affiliation(s)
- Li Tao
- Department of Pharmaceutics, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
- Bristol-Myers Squibb Company, New Brunswick, NJ, USA
| | - Jennifer W Chan
- Department of Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
| | - Kathryn E Uhrich
- Department of Pharmaceutics, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
- Department of Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
- Department of Chemistry & Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
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Vadakkan MV, Binil Raj S, Kartha CC, Vinod Kumar G. Cationic, amphiphilic dextran nanomicellar clusters as an excipient for dry powder inhaler formulation. Acta Biomater 2015; 23:172-188. [PMID: 26013041 DOI: 10.1016/j.actbio.2015.05.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2015] [Revised: 05/14/2015] [Accepted: 05/18/2015] [Indexed: 11/25/2022]
Abstract
Effective delivery of drugs to alveoli in a controlled manner using hydrophobic polymers as carriers has already been reported. Preclinical studies revealed that toxicity and hydrophobicity are related to each other in pulmonary delivery. Here, we are reporting a chemically modified dextran having amphiphilicity and cationicity achieved by controlled grafting of stearyl amine. Two proportions of lipopolymers were synthesized and physico-chemical characterization was carried out. In vivo evaluation of sub-acute toxicity of the synthesized lipopolymer in Sprague-Dawley rats was carried out for three months. This was followed by a histological evaluation of the sacrificed animal's lung. Further, the synthesized lipopolymer was formulated with drug (Rifampicin) loaded inhalable microparticles through spray drying. The final drug formulation was tested for toxicity and proinflammatory responses in human cell lines. Dose deposition efficiency of the formulation was determined using Anderson Cascade Impactor.
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Bae J, Maurya A, Shariat-Madar Z, Murthy SN, Jo S. Novel Redox-Responsive Amphiphilic Copolymer Micelles for Drug Delivery: Synthesis and Characterization. AAPS JOURNAL 2015; 17:1357-68. [PMID: 26122497 DOI: 10.1208/s12248-015-9800-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Accepted: 06/13/2015] [Indexed: 11/30/2022]
Abstract
A novel redox-responsive amphiphilic polymer was synthesized with bioreductive trimethyl-locked quinone propionic acid for a potential triggered drug delivery application. The aim of this study was to synthesize and characterize the redox-responsive amphiphilic block copolymer micelles containing pendant bioreductive quinone propionic acid (QPA) switches. The redox-responsive hydrophobic block (polyQPA), synthesized from QPA-serinol and adipoyl chloride, was end-capped with methoxy poly(ethylene glycol) of molecular weight 750 (mPEG750) to achieve a redox-responsive amphiphilic block copolymer, polyQPA-mPEG750. PolyQPA-mPEG750 was able to self-assemble as micelles to show a critical micelle concentration (CMC) of 0.039% w/v (0.39 mg/ml, 0.107 mM) determined by a dye solubilization method using 1,6-diphenyl-1,3,5-hexatriene (DPH) in phosphate-buffered saline (PBS). The mean diameter of polymeric micelles was found to be 27.50 nm (PI = 0.064) by dynamic light scattering. Furthermore, redox-triggered destabilization of the polymeric micelles was confirmed by (1)H-NMR spectroscopy and particle size measurements in a simulated redox state. PolyQPA-mPEG750 underwent triggered reduction to shed pendant redox-responsive QPA groups and its polymeric micelles were swollen to be dissembled in the presence of a reducing agent, thereby enabling the release of loaded model drug, paclitaxel. The redox-responsive polyQPA-mPEG750 polymer micelles would be useful as a drug delivery system allowing triggered drug release in an altered redox state such as tumor microenvironments with an altered redox potential and/or redox enzyme upregulation.
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Affiliation(s)
- Jungeun Bae
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, Mississippi, 38677, USA
| | - Abhijeet Maurya
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, Mississippi, 38677, USA
| | - Zia Shariat-Madar
- Department of BioMolecular Sciences, School of Pharmacy, The University of Mississippi, University, Mississippi, 38677, USA
| | - S Narasimha Murthy
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, Mississippi, 38677, USA.,Institute for Drug Delivery and Biomedical Research (IDBR), Bangalore, India
| | - Seongbong Jo
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, Mississippi, 38677, USA. .,Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, Mississippi, 38677, USA.
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Thangavel S, Yoshitomi T, Sakharkar MK, Nagasaki Y. Redox nanoparticles inhibit curcumin oxidative degradation and enhance its therapeutic effect on prostate cancer. J Control Release 2015; 209:110-9. [PMID: 25912409 DOI: 10.1016/j.jconrel.2015.04.025] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 04/01/2015] [Accepted: 04/19/2015] [Indexed: 10/23/2022]
Abstract
Curcumin is a phytochemical with diverse molecular targets and is well known for its anti-tumor potential. However, it has limited application in cancer therapy because curcumin undergoes rapid oxidative degradation at physiological conditions resulting in poor stability and bio-availability. In this study, we were able to suppress curcumin's oxidative degradation by encapsulating it in a nanoparticle that also acts as a radical scavenger. We prepared curcumin-loaded pH-sensitive redox nanoparticles (RNP(N)) by self-assembling amphiphilic block copolymers conjugated with reactive oxygen species (ROS) scavenging nitroxide radicals to ensure the delivery of minimally degraded curcumin to target regions. In vitro analysis confirmed that the entrapment of both curcumin and nitroxide radicals in the hydrophobic core of RNP(N) suppressed curcumin degradation in conditions mimicking the physiological environment. Evaluation of apoptosis-related molecules in the cells, such as ceramides, caspases, apoptosis-inducing factor, and acid ceramidase revealed that curcumin loaded RNP(N) induced strong apoptosis compared to free curcumin. Lastly, intravenous injection of curcumin loaded RNP(N) suppressed tumor growth in vivo, which is due to the increased bio-availability and significant ROS scavenging at tumor sites. These results demonstrated that RNP(N) is a promising drug carrier with unique ROS-scavenging abilities, and it is able to overcome the crucial hurdle of curcumin's limitations to enhance its therapeutic potential.
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Affiliation(s)
- Sindhu Thangavel
- Department of Materials Sciences, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8573, Japan
| | - Toru Yoshitomi
- Department of Materials Sciences, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8573, Japan
| | | | - Yukio Nagasaki
- Department of Materials Sciences, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8573, Japan; Master's School of Medical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tennoudai 1-1-1, Tsukuba, Ibaraki 305-8573, Japan; Satellite Laboratory, International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), University of Tsukuba, Tennoudai 1-1-1, Tsukuba, Ibaraki 305-8573, Japan.
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Glavas L, Odelius K, Albertsson A. Tuning loading and release by modification of micelle core crystallinity and preparation. POLYM ADVAN TECHNOL 2015. [DOI: 10.1002/pat.3524] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Lidija Glavas
- Department of Fiber and Polymer Technology School of Chemical Science and Engineering KTH, Royal Institute of Technology Stockholm SE‐100 44 Sweden
| | - Karin Odelius
- Department of Fiber and Polymer Technology School of Chemical Science and Engineering KTH, Royal Institute of Technology Stockholm SE‐100 44 Sweden
| | - Ann‐Christine Albertsson
- Department of Fiber and Polymer Technology School of Chemical Science and Engineering KTH, Royal Institute of Technology Stockholm SE‐100 44 Sweden
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