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Panda H, Suzuki M, Naito M, Saito R, Wen H, Baird L, Uruno A, Miyata K, Yamamoto M. Halofuginone micelle nanoparticles eradicate Nrf2-activated lung adenocarcinoma without systemic toxicity. Free Radic Biol Med 2022; 187:92-104. [PMID: 35618180 DOI: 10.1016/j.freeradbiomed.2022.05.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/16/2022] [Accepted: 05/19/2022] [Indexed: 12/15/2022]
Abstract
The Keap1-Nrf2 system is the master regulator of the cellular response against oxidative and xenobiotic stresses. Constitutive activation of Nrf2 is frequently observed in various types of cancers. Nrf2 hyperactivation induces metabolic reprogramming in cancer cells, which supports the increased energy demand required for rapid proliferation and confers high-level resistance against anticancer radio/chemotherapy. Hence, Nrf2 inhibition has emerged as an attractive therapeutic strategy to counter such acquired resistance in Nrf2-activated tumors. We previously identified Halofuginone (HF) as a promising Nrf2 inhibitor. In this study, we pursued preclinical characterization of HF and found that while HF markedly reduced the viability of cancer cells, it also caused severe hematopoietic and immune cell suppression in a dose-dependent manner. Hence, to overcome this toxicity, we decided to employ a nanomedicine approach to HF. We found that encapsulation of HF into a polymeric micelle (HF micelle; HFm) largely relieved the systemic toxicity exhibited by free HF while maintaining the tumor-suppressive properties of HF. LC-MS/MS analysis revealed that the reduction in the magnitude of adverse effects was the result of the ability to release HF from the HFm core in a slow and sustained manner. These results thus support the contention that HFm will potentially counteract Nrf2-activated cancers in the clinical settings.
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Affiliation(s)
- Harit Panda
- Department of Medical Biochemistry, Tohoku University Graduate School of Medicine, Sendai, 980-8575, Japan
| | - Mikiko Suzuki
- Center for Radioisotope Sciences, Tohoku University Graduate School of Medicine, Sendai, 980-8575, Japan.
| | - Mitsuru Naito
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
| | - Ritsumi Saito
- Department of Medical Biochemistry, Tohoku University Graduate School of Medicine, Sendai, 980-8575, Japan
| | - Huaichun Wen
- Department of Medical Biochemistry, Tohoku University Graduate School of Medicine, Sendai, 980-8575, Japan
| | - Liam Baird
- Department of Medical Biochemistry, Tohoku University Graduate School of Medicine, Sendai, 980-8575, Japan
| | - Akira Uruno
- Department of Medical Biochemistry, Tohoku University Graduate School of Medicine, Sendai, 980-8575, Japan
| | - Kanjiro Miyata
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
| | - Masayuki Yamamoto
- Department of Medical Biochemistry, Tohoku University Graduate School of Medicine, Sendai, 980-8575, Japan.
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2
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Ozturk N, Kara A, Gulyuz S, Ozkose UU, Tasdelen MA, Bozkir A, Yilmaz O, Vural I. Exploiting ionisable nature of PEtOx- co-PEI to prepare pH sensitive, doxorubicin-loaded micelles. J Microencapsul 2020; 37:467-480. [PMID: 32627670 DOI: 10.1080/02652048.2020.1792566] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
AIMS This study was conducted to evaluate block copolymers containing two different poly(ethyleneimine) (PEI) amounts, as new pH-sensitive micellar delivery systems for doxorubicin. METHODS Micelles were prepared with block copolymers consisting of poly(2-ethyl-2-oxazoline)-co-poly(ethyleneimine) (PEtOx-co-PEI) and poly(ε-caprolactone) (PCL) as hydrophilic and hydrophobic blocks, respectively. Doxorubicin loading, micelle size, pH-dependent drug release, and in vitro cytotoxicity on MCF-7 cells were investigated. RESULTS The average size of drug-loaded micelles was under 100 nm and drug loading was between 10.7% and 48.3% (w/w). pH-sensitive drug release was more pronounced (84.7% and 68.9% (w/w) of drug was released at pH 5.0 and pH 7.4, respectively) for the micelles of the copolymer with the lowest PEI amount. The cell viability of doxorubicin-loaded micelles which were prepared by the copolymer with the lowest PEI amount was 28-33% at 72 h. CONCLUSIONS PEtOx-co-PEI-b-PCL micelles of this copolymer were found to be stable and effective pH-sensitive nano-sized carriers for doxorubicin delivery.
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Affiliation(s)
- Naile Ozturk
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey.,Department of Pharmaceutical Technology, Faculty of Pharmacy, Inonu University, Malatya, Turkey
| | - Asli Kara
- Department of Medical Services and Techniques, Sungurlu Vocational High School, Hitit University, Corum, Turkey.,Department of Nanotechnology and Nanomedicine, Hacettepe University Institute of Science, Ankara, Turkey
| | - Sevgi Gulyuz
- Materials Institute, Marmara Research Center, TUBITAK, Kocaeli, Turkey.,Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Istanbul, Turkey
| | - Umut Ugur Ozkose
- Materials Institute, Marmara Research Center, TUBITAK, Kocaeli, Turkey.,Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Istanbul, Turkey.,Department of Chemistry, Faculty of Science and Letters, Piri Reis University, Istanbul, Turkey
| | - Mehmet Atilla Tasdelen
- Department of Polymer Engineering, Faculty of Engineering, Yalova University, Yalova, Turkey
| | - Asuman Bozkir
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Ankara University, Ankara, Turkey
| | - Ozgur Yilmaz
- Materials Institute, Marmara Research Center, TUBITAK, Kocaeli, Turkey
| | - Imran Vural
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey
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3
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KINOSHITA M, KUGIMOTO D, MORIMOTO K, ITO K, TSUBOI K, KANAZAWA S, AKIBA I. Study on the Anomalous Small-Angle X-Ray Scattering on Structural Change in pH-Responsive Polymer Micelles. KOBUNSHI RONBUNSHU 2019. [DOI: 10.1295/koron.2018-0046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Masaki KINOSHITA
- Department of Chemistry and Biochemistry, The University of Kitakyushu
| | - Daisuke KUGIMOTO
- Department of Chemistry and Biochemistry, The University of Kitakyushu
| | - Kosuke MORIMOTO
- Department of Chemistry and Biochemistry, The University of Kitakyushu
| | - Kazuyuki ITO
- Department of Chemistry and Biochemistry, The University of Kitakyushu
| | - Kengo TSUBOI
- Department of Chemistry and Biochemistry, The University of Kitakyushu
| | - Satoshi KANAZAWA
- Department of Chemistry and Biochemistry, The University of Kitakyushu
| | - Isamu AKIBA
- Department of Chemistry and Biochemistry, The University of Kitakyushu
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4
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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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5
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Shiraishi K, Yusa SI, Ito M, Nakai K, Yokoyama M. Photo Irradiation-Induced Core Crosslinked Poly(ethylene glycol)-block-poly(aspartic acid) Micelles: Optimization of Block Copolymer Synthesis and Characterization of Core Crosslinked Micelles. Polymers (Basel) 2017; 9:polym9120710. [PMID: 30966010 PMCID: PMC6418968 DOI: 10.3390/polym9120710] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 12/11/2017] [Accepted: 12/11/2017] [Indexed: 12/04/2022] Open
Abstract
We used photo irradiation to design core crosslinked polymeric micelles whose only significant physico-chemical change was in their physico-chemical stability, which helps elucidate poly(ethylene glycol) (PEG)-related immunogenicity. Synthetic routes and compositions of PEG-b-poly(aspartic acid) block copolymers were optimized with the control of n-alkyl chain length and photo-sensitive chalcone moieties. The conjugation ratio between n-alkyl chain and the chalcone moieties was controlled, and upon the mild photo irradiation of polymeric micelles, permanent crosslink proceeded in the micelle cores. In the optimized condition, the core crosslinked (CCL) micelles exhibited no dissociation while the non-CCL micelles exhibited dissociation. These results indicate that the photo-crosslinking reactions in the inner core were successful. A gel-permeation chromatography (GPC) measurement revealed a difference between the micellar-formation stability of CCL micelles and that of the non-CCL micelles. GPC experiments revealed that the CCL micelles were more stable than the non-CCL micelles. Our research also revealed that photo-crosslinking reactions did not change the core property for drug encapsulation. In conclusion, the prepared CCL micelles exhibited the same diameter, the same formula, and the same inner-core properties for drug encapsulation as did the non-CCL micelles. Moreover, the CCL micelles exhibited non-dissociable micelle formation, while the non-CCL micelles exhibited dissociation into single block copolymers.
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Affiliation(s)
- Kouichi Shiraishi
- Medical Engineering Laboratory, Research Center for Medical Sciences, The Jikei University School of Medicine, 163-1, Kashiwashita, Kashiwa, Chiba 277-0004, Japan.
| | - Shin-Ichi Yusa
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan.
| | - Masanori Ito
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan.
| | - Keita Nakai
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan.
| | - Masayuki Yokoyama
- Medical Engineering Laboratory, Research Center for Medical Sciences, The Jikei University School of Medicine, 163-1, Kashiwashita, Kashiwa, Chiba 277-0004, Japan.
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6
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Abstract
Covalent modification of therapeutic compounds is a clinically proven strategy to devise prodrugs with enhanced treatment efficacies. This prodrug strategy relies on the modified drugs that possess advantageous pharmacokinetic properties and administration routes over their parent drug. Self-assembling prodrugs represent an emerging class of therapeutic agents capable of spontaneously associating into well-defined supramolecular nanostructures in aqueous solutions. The self-assembly of prodrugs expands the functional space of conventional prodrug design, affording a possible pathway to more effective therapies as the assembled nanostructure possesses distinct physicochemical properties and interaction potentials that can be tailored to specific administration routes and disease treatment. In this review, we will discuss the various types of self-assembling prodrugs in development, providing an overview of the methods used to control their structure and function and, ultimately, our perspective on their current and future potential.
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Affiliation(s)
- Andrew G Cheetham
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, 1 Jianshe Eastern Road, Zhengzhou 450052, Henan, China
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Roy S, Loganathan G, Dharumadurai D, Akbarsha MA, Sarathi GP. Model studies on the interactions of a Cu(II)-quinone complex with surfactant micelles and DNA explore its induction of apoptosis in human MDA-MB-231 breast adenocarcinoma cells. J COORD CHEM 2017. [DOI: 10.1080/00958972.2017.1330466] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Sanjay Roy
- Department of Chemistry, Shibpur Dinobundhoo Institution (College), Howrah, India
| | - Gayathri Loganathan
- Department of Microbiology, School of Life Sciences, Bharathidasan University, Tiruchirappalli, India
| | - Dhanasekaran Dharumadurai
- Department of Microbiology, School of Life Sciences, Bharathidasan University, Tiruchirappalli, India
| | - Mohammad A. Akbarsha
- Mahathma Gandhi-Doerenkamp Center, Bharathidasan University, Tiruchirappalli, India
- Department of Food Science and Nutrition, College of Food Science and Agriculture, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Guin Partha Sarathi
- Department of Chemistry, Shibpur Dinobundhoo Institution (College), Howrah, India
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8
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Shiraishi K, Wang Z, Kokuryo D, Aoki I, Yokoyama M. A polymeric micelle magnetic resonance imaging (MRI) contrast agent reveals blood–brain barrier (BBB) permeability for macromolecules in cerebral ischemia-reperfusion injury. J Control Release 2017; 253:165-171. [DOI: 10.1016/j.jconrel.2017.03.020] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Revised: 02/17/2017] [Accepted: 03/11/2017] [Indexed: 01/10/2023]
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9
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MURAKAMI D, MIZOGUCHI T, TANIGUCHI A, KANAZAWA S, KINOSHITA M, AKIBA I. Thermo-Responsive Amphiphilic Block Copolymer Containing an Alkoxyamine Unit between the Hydrophobic and Water-Soluble Blocks. KOBUNSHI RONBUNSHU 2017. [DOI: 10.1295/koron.2016-0066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Daiki MURAKAMI
- Department of Chemistry and Biochemistry, The University of Kitakyushu
| | - Tomoyo MIZOGUCHI
- Department of Chemistry and Biochemistry, The University of Kitakyushu
| | - Aoi TANIGUCHI
- Department of Chemistry and Biochemistry, The University of Kitakyushu
| | - Satoshi KANAZAWA
- Department of Chemistry and Biochemistry, The University of Kitakyushu
| | - Masaki KINOSHITA
- Department of Chemistry and Biochemistry, The University of Kitakyushu
| | - Isamu AKIBA
- Department of Chemistry and Biochemistry, The University of Kitakyushu
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10
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Salakhieva D, Shevchenko V, Németh C, Gyarmati B, Szilágyi A, Abdullin T. Structure-biocompatibility and transfection activity relationships of cationic polyaspartamides with (dialkylamino)alkyl and alkyl or hydroxyalkyl side groups. Int J Pharm 2016; 517:234-246. [PMID: 27931785 DOI: 10.1016/j.ijpharm.2016.12.007] [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: 10/02/2016] [Accepted: 12/02/2016] [Indexed: 01/18/2023]
Abstract
A series of 14 cationic derivatives of poly(aspartic acid) i.e. cationic polyaspartamides with different (dialkylamino)alkyl and alkyl or hydroxyalkyl side groups was synthesized by nucleophilic addition on polysuccinimide. The resulting polyaspartamides have moderate amphiphilic properties. Relationships between the structure and ratio of side groups and in vitro properties of polyaspartamides, including their cytotoxic and membrane-damaging activity towards human cell lines, primary skin fibroblasts and erythrocytes, were established and discussed. Cationic polyaspartamides vary in their DNA-binding, condensing and nuclease-protecting characteristics depending on the concentration ratio of (dialkylamino)alkyl and alkyl or hydroxyalkyl side groups. Effective cell transfection was achieved upon polyaspartamide-mediated plasmid DNA delivery in serum-free medium in the presence of chloroquine. Effect of serum proteins adsorption onto polyaspartamide based polyplexes, and the role of concentration of polyplexes in culture medium in their colloidal stability and transfection process were demonstrated. Synthesized polyaspartamides are biocompatible and long-acting gene carriers, which are applied to cells after dilution and without washing, thus providing transfection level comparable to that of commercial transfection reagent.
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Affiliation(s)
- Diana Salakhieva
- Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, 18 Kremlyovskaya St., 420008 Kazan, Russia
| | - Vesta Shevchenko
- Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, 18 Kremlyovskaya St., 420008 Kazan, Russia
| | - Csaba Németh
- Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary
| | - Benjámin Gyarmati
- Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary
| | - András Szilágyi
- Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary.
| | - Timur Abdullin
- Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, 18 Kremlyovskaya St., 420008 Kazan, Russia.
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12
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Anomalous small-angle X-ray scattering study on the spatial distribution of hydrophobic molecules in polymer micelles. Polym J 2016. [DOI: 10.1038/pj.2016.32] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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13
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Lee J, Choi KJ, Moon SU, Kim S. Theragnosis-based combined cancer therapy using doxorubicin-conjugated microRNA-221 molecular beacon. Biomaterials 2016; 74:109-18. [DOI: 10.1016/j.biomaterials.2015.09.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Revised: 09/21/2015] [Accepted: 09/23/2015] [Indexed: 01/08/2023]
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14
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Ramesh K, Gundampati RK, Singh S, Mitra K, Shukla A, Jagannadham MV, Chattopadhyay D, Misra N, Ray B. Self-assembly, doxorubicin-loading and antibacterial activity of well-defined ABA-type amphiphilic poly(N-vinylpyrrolidone)-b-poly(d,l-lactide)-b-poly(N-vinyl pyrrolidone) triblock copolymers. RSC Adv 2016. [DOI: 10.1039/c5ra23239b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthesis, self-assembly, DOX-loading and antibacterial activity of well-defined ABA-type amphiphilic poly(N-vinylpyrrolidone)-b-poly(d,l-lactide)-b-poly(N-vinylpyrrolidone) triblock copolymers.
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Affiliation(s)
- K. Ramesh
- Department of Chemistry
- Faculty of Science
- Banaras Hindu University
- Varanasi – 221005
- India
| | - Ravi Kumar Gundampati
- Molecular Biology Unit
- Institute of Medical Science
- Banaras Hindu University
- Varanasi – 221005
- India
| | - Shikha Singh
- Department of Chemistry
- Faculty of Science
- Banaras Hindu University
- Varanasi – 221005
- India
| | - Kheyanath Mitra
- Department of Chemistry
- Faculty of Science
- Banaras Hindu University
- Varanasi – 221005
- India
| | - Ankita Shukla
- Molecular Biology Unit
- Institute of Medical Science
- Banaras Hindu University
- Varanasi – 221005
- India
| | | | | | - Nira Misra
- School of Biomedical Engineering
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi-221005
- India
| | - Biswajit Ray
- Department of Chemistry
- Faculty of Science
- Banaras Hindu University
- Varanasi – 221005
- India
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Shiraishi K, Sanada Y, Mochizuki S, Kawano K, Maitani Y, Sakurai K, Yokoyama M. Determination of polymeric micelles' structural characteristics, and effect of the characteristics on pharmacokinetic behaviors. J Control Release 2015; 203:77-84. [DOI: 10.1016/j.jconrel.2015.02.017] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 02/06/2015] [Accepted: 02/12/2015] [Indexed: 11/16/2022]
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Abstract
In this review, polymeric micelles as drug-targeting carriers are concisely explained. In the first introduction part, I describe a brief history of polymer micelle's research for drug targeting, and then I explain this review's focus. Since most other review articles concerning polymeric micelle carriers explain only what was achieved in the polymeric micelle's research, I describe this review by focusing on what was not done. In the second part, I take up three characteristics of polymeric micelle carriers by comparing their advantages and disadvantages, what was done and what was not done in the past studies, and what is easily achieved and what is difficult to be achieved with polymeric micelles. In the last part, I discuss three common problems of nano-sized drug carrier systems including polymeric micelles, and then I add a few comments on these problems.
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Affiliation(s)
- Masayuki Yokoyama
- Division of Medical Engineering, Research Center for Medical Sciences, The Jikei University School of Medicine , Tokyo , Japan
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17
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Amphiphilic poly(amino acid) based micelles applied to drug delivery: The in vitro and in vivo challenges and the corresponding potential strategies. J Control Release 2015; 199:84-97. [DOI: 10.1016/j.jconrel.2014.12.012] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2014] [Revised: 12/09/2014] [Accepted: 12/10/2014] [Indexed: 01/08/2023]
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19
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Polypeptide-based Micelles for Delivery of Irinotecan: Physicochemical and In vivo Characterization. Pharm Res 2014; 32:1947-56. [PMID: 25471199 DOI: 10.1007/s11095-014-1588-8] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 11/24/2014] [Indexed: 10/24/2022]
Abstract
PURPOSE Irinotecan (IRI) is a broad spectrum chemotherapeutic agent used individually or in combination to treat multiple malignancies. Present study aimed at developing polypeptide-based block ionomer complex (BIC) micelles to improve the pharmacokinetic and antitumor response of IRI. METHODS Irinotecan-loaded BIC micelles (IRI-BIC) was prepared and evaluated in terms of various physicochemical and biological parameters including size, shape, release, cytotoxicity, and pharmacokinetic analysis. In vivo antitumor efficacy was investigated in SCC-7 bearing xenograft tumor model. RESULTS IRI was successfully incorporated into the ionic cores of poly(ethylene glycol)-b-poly(aspartic acid) (PEG-b-PAA) with a high drug loading capacity (~80%). The electrostatically assembled BIC micelles were nanosized (~50 nm) with uniform size distribution pattern (PDI~0.1). The BIC micelles exhibited pH-sensitiveness with limited release of IRI at physiological conditions and significantly enhanced the release rate at acidic conditions, making it an ideal delivery system for tumor targeting. The IRI-BIC showed a dose-dependent cytotoxicity in SCC-7 and A-549 cancer cell lines. Pharmacokinetic studies clearly showed that BIC micelles improved the IRI blood circulation time and decreased its elimination rate constant, while that of free IRI, rapidly eliminated from the central compartment. Moreover, IRI-BIC showed superior therapeutic performance with no toxicity in BALB/c nude xenograft mice. The micelle treated group showed an inhibition rate of ~66% compared to free IRI treated group. CONCLUSIONS Taken together, BIC micelles could be a potentially useful nanovehicle with promising applicability in systemic tumor treatment.
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Husseini GA, Pitt WG, Martins AM. Ultrasonically triggered drug delivery: breaking the barrier. Colloids Surf B Biointerfaces 2014; 123:364-86. [PMID: 25454759 DOI: 10.1016/j.colsurfb.2014.07.051] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 07/23/2014] [Accepted: 07/24/2014] [Indexed: 12/21/2022]
Abstract
The adverse side-effects of chemotherapy can be minimized by delivering the therapeutics in time and space to only the desired target site. Ultrasound offers one fairly non-invasive method of accomplishing such precise delivery because its energy can disrupt nanosized containers that are designed to sequester the drug until the ultrasonic event. Such containers include micelles, liposomes and solid nanoparticles. Conventional micelles and liposomes are less acoustically sensitive to ultrasound because the strongest forces associated with ultrasound are generated by gas-liquid interfaces, which both of these conventional constructs lack. Acoustically activated carriers often incorporate a gas phase, either actively as preformed bubbles, or passively such as taking advantage of dissolved gasses that form bubbles upon insonation. Newer concepts include using liquids that form gas when insonated. This review focuses on the ultrasonically activated delivery of therapeutics from micelles, liposomes and solid particles. In vitro and in vivo results are summarized and discussed. Novel structural concepts from micelles and liposomes are presented. Mechanisms of ultrasonically activated release are discussed. The future of ultrasound in drug delivery is envisioned.
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Affiliation(s)
| | | | - Ana M Martins
- American University of Sharjah, Sharjah, United Arab Emirates
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21
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Dawidczyk CM, Russell LM, Searson PC. Nanomedicines for cancer therapy: state-of-the-art and limitations to pre-clinical studies that hinder future developments. Front Chem 2014; 2:69. [PMID: 25202689 PMCID: PMC4142601 DOI: 10.3389/fchem.2014.00069] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Accepted: 08/05/2014] [Indexed: 01/31/2023] Open
Abstract
The ability to efficiently deliver a drug or gene to a tumor site is dependent on a wide range of factors including circulation time, interactions with the mononuclear phagocyte system, extravasation from circulation at the tumor site, targeting strategy, release from the delivery vehicle, and uptake in cancer cells. Nanotechnology provides the possibility of creating delivery systems where the design constraints are decoupled, allowing new approaches for reducing the unwanted side effects of systemic delivery, increasing tumor accumulation, and improving efficacy. The physico-chemical properties of nanoparticle-based delivery platforms introduce additional complexity associated with pharmacokinetics, tumor accumulation, and biodistribution. To assess the impact of nanoparticle-based delivery systems, we first review the design strategies and pharmacokinetics of FDA-approved nanomedicines. Next we review nanomedicines under development, summarizing the range of nanoparticle platforms, strategies for targeting, and pharmacokinetics. We show how the lack of uniformity in preclinical trials prevents systematic comparison and hence limits advances in the field.
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Affiliation(s)
- Charlene M Dawidczyk
- Institute for Nanobiotechnology, Johns Hopkins University Baltimore, MD, USA ; Johns Hopkins Center of Cancer Nanotechnology Excellence, Johns Hopkins University Baltimore, MD, USA ; Department of Materials Science and Engineering, Johns Hopkins University Baltimore, MD, USA
| | - Luisa M Russell
- Institute for Nanobiotechnology, Johns Hopkins University Baltimore, MD, USA ; Johns Hopkins Center of Cancer Nanotechnology Excellence, Johns Hopkins University Baltimore, MD, USA ; Department of Materials Science and Engineering, Johns Hopkins University Baltimore, MD, USA
| | - Peter C Searson
- Institute for Nanobiotechnology, Johns Hopkins University Baltimore, MD, USA ; Johns Hopkins Center of Cancer Nanotechnology Excellence, Johns Hopkins University Baltimore, MD, USA ; Department of Materials Science and Engineering, Johns Hopkins University Baltimore, MD, USA
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22
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Shiraishi K. [Utilization of polymeric micelle magnetic resonance imaging (MRI) contrast agent for theranostic system]. YAKUGAKU ZASSHI 2013; 133:1277-85. [PMID: 24292172 DOI: 10.1248/yakushi.13-00222-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We applied a polymeric micelle carrier system for the targeting of a magnetic resonance imaging (MRI) contrast agent. Prepared polymeric micelle MRI contrast agent exhibited a long circulation characteristic in blood, and considerable amount of the contrast agent was found to accumulate in colon 26 solid tumor by the EPR effect. The signal intensities of tumor area showed 2-folds increase in T1-weighted images at 24 h after i.v. injection. To observe enhancement of the EPR effect by Cderiv pretreatment on tumor targeting, we used the contrast agent for the evaluation by means of MRI. Cderiv pretreatment significantly enhanced tumor accumulation of the contrast agent. Interestingly, very high signal intensity in tumor region was found at 24 h after the contrast agent injection in Cderiv pretreated mice. The contrast agent visualized a microenvironmental change in tumor. These results indicate that the contrast agent exhibits potential use for tumor diagnostic agent. To combine with a polymeric micelle carrier system for therapeutic agent, the usage of the combination makes a new concept of "theranostic" for a better cancer treatment.
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Affiliation(s)
- Kouichi Shiraishi
- Medical Engineering Laboratory, Research Center for Medical Science, The Jikei University School of Medicine
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Luo YL, Fu JY, Xu F, Chen YS, Zhang B. Thermosensitive AB4 four-armed star PNIPAM-b-HTPB multiblock copolymer micelles for camptothecin drug release. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2013; 25:307-23. [PMID: 24236748 DOI: 10.1080/09205063.2013.858382] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Thermo-sensitive poly(N-isoproplacrylamide)m-block-hydroxyl-terminated polybutadiene-block-poly(N-isoproplacrylamide)m (PNIPAMm-b-HTPB-b-PNIPAMm, m = 1 or 2) block copolymers, AB4 four-armed star multiblock and linear triblock copolymers, were synthesized by ATRP with HTPB as central blocks, and characterization was performed by (1)H NMR, Fourier transform infrared, and size exclusion chromatography. The multiblock copolymers could spontaneously assemble into more regular spherical core-shell nanoscale micelles than the linear triblock copolymer. The physicochemical properties were detected by a surface tension, nanoparticle analyzer, transmission electron microscope (TEM), dynamic light scattering, and UV-vis measurements. The multiblock copolymer micelles had lower critical micelle concentration than the linear counterpart, TEM size from 100 to 120 nm, and the hydrodynamic diameters below 150 nm. The micelles exhibited thermo-dependent size change, with low critical solution temperature of about 33-35 °C. The characteristic parameters were affected by the composition ratios, length of PNIPAM blocks, and molecular architectures. The camptothecin release demonstrated that the drug release was thermo-responsive, accompanied by the temperature-induced structural changes of the micelles. MTT assays were performed to evaluate the biocompatibility or cytotoxicity of the prepared copolymer micelles.
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Affiliation(s)
- Yan-Ling Luo
- a Key Laboratory of Macromolecular Science of Shaanxi Province , School of Chemistry and Chemical Engineering, Shaanxi Normal University , Xi'an 710062 , P.R. China
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Ryan GM, Kaminskas LM, Bulitta JB, McIntosh MP, Owen DJ, Porter CJ. PEGylated polylysine dendrimers increase lymphatic exposure to doxorubicin when compared to PEGylated liposomal and solution formulations of doxorubicin. J Control Release 2013; 172:128-136. [DOI: 10.1016/j.jconrel.2013.08.004] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Accepted: 08/05/2013] [Indexed: 10/26/2022]
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25
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Luo YL, Yang XL, Xu F, Chen YS, Zhang B. Thermosensitive PNIPAM-b-HTPB block copolymer micelles: molecular architectures and camptothecin drug release. Colloids Surf B Biointerfaces 2013; 114:150-7. [PMID: 24184534 DOI: 10.1016/j.colsurfb.2013.09.043] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 08/31/2013] [Accepted: 09/18/2013] [Indexed: 11/30/2022]
Abstract
Two kinds of thermo-sensitive poly(N-isoproplacrylamide) (PNIPAM) block copolymers, AB4 four-armed star multiblock and linear triblock copolymers, were synthesized by ATRP with hydroxyl-terminated polybutadiene (HTPB) as central blocks, and characterization was performed by (1)H NMR, FT-IR and SEC. The multiblock copolymers could spontaneously assemble into more regular spherical core-shell nanoscale micelles than the linear triblock copolymer. The physicochemical properties were detected by a surface tension technique, nano particle analyzer, TEM, DLS and UV-vis measurements. The multiblock copolymer micelles had lower critical micelle concentration than the linear counterpart, TEM size from 100 to 120 nm and the hydrodynamic diameters below 150 nm. The micelles exhibited thermo-dependent size change, with low critical solution temperature about 33-35 °C. The characteristic parameters were affected by the composition ratios, length of PNIPAM blocks and molecular architectures. The camptothecin release demonstrated that the drug release was thermo-responsive, accompanied by the temperature-induced structural changes of the micelles. MTT assays were performed to evaluate the biocompatibility or cytotoxicity of the prepared copolymer micelles.
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Affiliation(s)
- Yan-Ling Luo
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, PR China.
| | - Xiao-Li Yang
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, PR China
| | - Feng Xu
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, PR China.
| | - Ya-Shao Chen
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, PR China
| | - Bin Zhang
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, PR China
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26
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Hydrophobic blocks of PEG-conjugates play a significant role in the accelerated blood clearance (ABC) phenomenon. J Control Release 2013; 165:183-90. [DOI: 10.1016/j.jconrel.2012.11.016] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Revised: 11/12/2012] [Accepted: 11/25/2012] [Indexed: 11/18/2022]
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27
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Block copolymer micelles for drug delivery: Design, characterization and biological significance. Adv Drug Deliv Rev 2012. [DOI: 10.1016/j.addr.2012.09.013] [Citation(s) in RCA: 492] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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28
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Rösler A, Vandermeulen GW, Klok HA. Advanced drug delivery devices via self-assembly of amphiphilic block copolymers. Adv Drug Deliv Rev 2012. [DOI: 10.1016/j.addr.2012.09.026] [Citation(s) in RCA: 435] [Impact Index Per Article: 36.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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29
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Luxenhofer R, Han Y, Schulz A, Tong J, He Z, Kabanov AV, Jordan R. Poly(2-oxazoline)s as polymer therapeutics. Macromol Rapid Commun 2012; 33:1613-31. [PMID: 22865555 PMCID: PMC3608391 DOI: 10.1002/marc.201200354] [Citation(s) in RCA: 326] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2012] [Revised: 06/12/2012] [Indexed: 01/21/2023]
Abstract
Poly(2-oxazoline)s (POx) are currently discussed as an upcoming polymer platform for biomaterials design and especially for polymer therapeutics. POx meet specific requirements needed for the development of next-generation polymer therapeutics such as biocompatibility, high modulation of solubility, variation of size, architecture as well as chemical functionality. Although in the early 1990s first and promising POx-based systems were presented, the field lay dormant for almost two decades. Only very recently, POx-based polymer therapeutics came back into the focus of very intensive research. In this review, we give an overview on the chemistry and physicochemical properties of POx and summarize the research of POx-protein conjugates, POx-drug conjugates, POx-based polyplexes and POx micelles for drug delivery.
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Affiliation(s)
- Robert Luxenhofer
- Professur für Makromolekulare Chemie, Department Chemie, Technische Universität Dresden, Zellescher Weg 19, 01069 Dresden, Germany
| | - Yingchao Han
- Center for Drug Delivery and Nanomedicine and Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE 68198-5830, U.S.A
| | - Anita Schulz
- Professur für Makromolekulare Chemie, Department Chemie, Technische Universität Dresden, Zellescher Weg 19, 01069 Dresden, Germany
| | - Jing Tong
- Center for Drug Delivery and Nanomedicine and Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE 68198-5830, U.S.A
| | - Zhijian He
- Center for Drug Delivery and Nanomedicine and Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE 68198-5830, U.S.A
| | - Alexander V. Kabanov
- Center for Drug Delivery and Nanomedicine and Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE 68198-5830, U.S.A
| | - Rainer Jordan
- Professur für Makromolekulare Chemie, Department Chemie, Technische Universität Dresden, Zellescher Weg 19, 01069 Dresden, Germany
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31
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Taurin S, Nehoff H, Greish K. Anticancer nanomedicine and tumor vascular permeability; Where is the missing link? J Control Release 2012; 164:265-75. [PMID: 22800576 DOI: 10.1016/j.jconrel.2012.07.013] [Citation(s) in RCA: 222] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Revised: 06/29/2012] [Accepted: 07/08/2012] [Indexed: 12/26/2022]
Abstract
Anticancer nanomedicine was coined to describe anticancer delivery systems such as polymer conjugates, liposomes, micelles, and metal nanoparticles. These anticancer delivery platforms have been developed with the enhanced permeability and retention (EPR) effect as a central mechanism for tumor targeting. EPR based nanomedicine has demonstrated, beyond doubt, to selectively target tumor tissues in animal models. However, over the last two decades, only nine anticancer agents utilizing this targeting strategy have been approved for clinical use. In this review, we systematically analyze various aspects that explain the limited clinical progress yet achieved. The influence of nanomedicine physicochemical characteristics, animal tumor models, and variations in tumor biology, on EPR based tumor targeting is closely examined. Furthermore, we reviewed results from over one hundred publications to construct patterns of factors that can influence the transition of EPR based anticancer nanomedicine to the clinic.
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Affiliation(s)
- Sebastien Taurin
- Department of Pharmacology & Toxicology, Otago School of Medical Sciences, University of Otago, Dunedin, New Zealand
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32
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Hevus I, Modgil A, Daniels J, Kohut A, Sun C, Stafslien S, Voronov A. Invertible micellar polymer assemblies for delivery of poorly water-soluble drugs. Biomacromolecules 2012; 13:2537-45. [PMID: 22759064 DOI: 10.1021/bm3007924] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Strategically designed amphiphilic invertible polymers (AIPs) are capable of (i) self-assembling into invertible micellar assemblies (IMAs) in response to changes in polarity of environment, polymer concentration, and structure, (ii) accommodating (solubilizing) substances that are otherwise insoluble in water, and (iii) inverting their molecular conformation in response to changes in the polarity of the local environment. The unique ability of AIPs to invert the molecular conformation depending on the polarity of the environment can be a decisive factor in establishing the novel stimuli-responsive mechanism of solubilized drug release that is induced just in response to a change in the polarity of the environment. The IMA capability to solubilize lipophilic drugs and deliver and release the cargo molecules by conformational inversion of polymer macromolecules in response to a change of the polarity of the environment was demonstrated by loading IMA with a phytochemical drug, curcumin. It was demonstrated that four sets of micellar vehicles based on different AIPs were capable of delivering the curcumin from water to an organic medium (1-octanol) by means of unique mechanism: AIP conformational inversion in response to changing polarity from polar to nonpolar. The IMAs are shown to be nontoxic against human cells up to a concentration of 10 mg/L. On the other hand, the curcumin-loaded IMAs are cytotoxic to breast carcinoma cells at this concentration, which confirms the potential of IMA-based vehicles in controlled delivery of poorly water-soluble drug candidates and release by means of this novel stimuli-responsive mechanism.
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Affiliation(s)
- Ivan Hevus
- Department of Coatings and Polymeric Materials, North Dakota State University, Fargo, North Dakota 58108, United States
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33
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Lalatsa A, Schätzlein AG, Mazza M, Le TBH, Uchegbu IF. Amphiphilic poly(l-amino acids) — New materials for drug delivery. J Control Release 2012; 161:523-36. [DOI: 10.1016/j.jconrel.2012.04.046] [Citation(s) in RCA: 125] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Revised: 04/17/2012] [Accepted: 04/18/2012] [Indexed: 01/16/2023]
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34
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Jeong YH, Yoon HJ, Jang WD. Dendrimer porphyrin-based self-assembled nano-devices for biomedical applications. Polym J 2012. [DOI: 10.1038/pj.2012.20] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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35
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Zeng J, Yu J, Huang J, Chang PR. Self-Assembled Polymeric Nanomicelles as Delivery Carriers for Antitumor Drug Camptothecin. J DISPER SCI TECHNOL 2012. [DOI: 10.1080/01932691.2011.562407] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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36
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Kaminskas LM, McLeod VM, Kelly BD, Sberna G, Boyd BJ, Williamson M, Owen DJ, Porter CJ. A comparison of changes to doxorubicin pharmacokinetics, antitumor activity, and toxicity mediated by PEGylated dendrimer and PEGylated liposome drug delivery systems. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2012; 8:103-11. [DOI: 10.1016/j.nano.2011.05.013] [Citation(s) in RCA: 132] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2011] [Revised: 05/10/2011] [Accepted: 05/24/2011] [Indexed: 12/21/2022]
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37
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Sakai-Kato K, Nanjo K, Kawanishi T, Okuda H. Rapid and Sensitive Method for Measuring the Plasma Concentration of Doxorubicin and Its Metabolites. Chem Pharm Bull (Tokyo) 2012; 60:391-6. [DOI: 10.1248/cpb.60.391] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | - Kunie Nanjo
- Division of Drugs, National Institute of Health Sciences
| | | | - Haruhiro Okuda
- Division of Drugs, National Institute of Health Sciences
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38
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Sakai-Kato K, Ishikura K, Oshima Y, Tada M, Suzuki T, Ishii-Watabe A, Yamaguchi T, Nishiyama N, Kataoka K, Kawanishi T, Okuda H. Evaluation of intracellular trafficking and clearance from HeLa cells of doxorubicin-bound block copolymers. Int J Pharm 2011; 423:401-9. [PMID: 22207161 DOI: 10.1016/j.ijpharm.2011.12.022] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2011] [Revised: 11/16/2011] [Accepted: 12/15/2011] [Indexed: 11/25/2022]
Abstract
New technologies are needed to deliver medicines safely and effectively. Polymeric nanoparticulate carriers are one such technology under investigation. We examined the intracellular trafficking of doxorubicin-bound block copolymers quantitatively and by imaging doxorubicin-derived fluorescence using confocal microscopy. The polymers were internalized by endocytosis and distributed in endosomal/lysosomal compartments and the endoplasmic reticulum; unlike free doxorubicin, the polymers were not found in the nucleus. Moreover, the ATP-binding cassette protein B1 (ABCB1) transporter may be involved in the efflux of the polymer from cells. This drug delivery system is attractive because the endogenous transport system is used for the uptake and delivery of the artificial drug carrier to the target as well as for its efflux from cells to medium. Our results show that a drug delivery system strategy targeting this endogenous transport pathway may be useful for affecting specific molecular targets.
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Affiliation(s)
- Kumiko Sakai-Kato
- Division of Drugs, National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
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Pamujula S, Hazari S, Bolden G, Graves RA, Chinta DD, Dash S, Kishore V, Mandal TK. Cellular delivery of PEGylated PLGA nanoparticles. J Pharm Pharmacol 2011; 64:61-7. [PMID: 22150673 DOI: 10.1111/j.2042-7158.2011.01376.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVES The objective of this study was to investigate the efficiency of uptake of PEGylated polylactide-co-gycolide (PLGA) nanoparticles by breast cancer cells. METHODS Nanoparticles of PLGA containing various amounts of polyethylene glycol (PEG, 5%-15%) were prepared using a double emulsion solvent evaporation method. The nanoparticles were loaded with coumarin-6 (C6) as a fluorescence marker. The particles were characterized for surface morphology, particle size, zeta potential, and for cellular uptake by 4T1 murine breast cancer cells. KEY FINDINGS Irrespective of the amount of PEG, all formulations yielded smooth spherical particles. However, a comparison of the particle size of various formulations showed bimodal distribution of particles. Each formulation was later passed through a 1.2 µm filter to obtain target size particles (114-335 nm) with zeta potentials ranging from -2.8 mV to -26.2 mV. While PLGA-PEG di-block (15% PEG) formulation showed significantly higher 4T1 cellular uptake than all other formulations, there was no statistical difference in cellular uptake among PLGA, PLGA-PEG-PLGA tri-block (10% PEG), PLGA-PEG di-block (5% PEG) and PLGA-PEG di-block (10% PEG) nanoparticles. CONCLUSION These preliminary findings indicated that the nanoparticle formulation prepared with 15% PEGylated PLGA showed maximum cellular uptake due to it having the smallest particle size and lowest zeta potential.
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Affiliation(s)
- Sarala Pamujula
- Center for Nanomedicine and Drug Delivery, Xavier College of Pharmacy, New Orleans, LA, USA
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40
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Daniels TR, Bernabeu E, Rodríguez JA, Patel S, Kozman M, Chiappetta DA, Holler E, Ljubimova JY, Helguera G, Penichet ML. The transferrin receptor and the targeted delivery of therapeutic agents against cancer. Biochim Biophys Acta Gen Subj 2011; 1820:291-317. [PMID: 21851850 DOI: 10.1016/j.bbagen.2011.07.016] [Citation(s) in RCA: 505] [Impact Index Per Article: 38.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2011] [Revised: 07/19/2011] [Accepted: 07/28/2011] [Indexed: 12/12/2022]
Abstract
BACKGROUND Traditional cancer therapy can be successful in destroying tumors, but can also cause dangerous side effects. Therefore, many targeted therapies are in development. The transferrin receptor (TfR) functions in cellular iron uptake through its interaction with transferrin. This receptor is an attractive molecule for the targeted therapy of cancer since it is upregulated on the surface of many cancer types and is efficiently internalized. This receptor can be targeted in two ways: 1) for the delivery of therapeutic molecules into malignant cells or 2) to block the natural function of the receptor leading directly to cancer cell death. SCOPE OF REVIEW In the present article we discuss the strategies used to target the TfR for the delivery of therapeutic agents into cancer cells. We provide a summary of the vast types of anti-cancer drugs that have been delivered into cancer cells employing a variety of receptor binding molecules including Tf, anti-TfR antibodies, or TfR-binding peptides alone or in combination with carrier molecules including nanoparticles and viruses. MAJOR CONCLUSIONS Targeting the TfR has been shown to be effective in delivering many different therapeutic agents and causing cytotoxic effects in cancer cells in vitro and in vivo. GENERAL SIGNIFICANCE The extensive use of TfR for targeted therapy attests to the versatility of targeting this receptor for therapeutic purposes against malignant cells. More advances in this area are expected to further improve the therapeutic potential of targeting the TfR for cancer therapy leading to an increase in the number of clinical trials of molecules targeting this receptor. This article is part of a Special Issue entitled Transferrins: molecular mechanisms of iron transport and disorders.
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Affiliation(s)
- Tracy R Daniels
- Division of Surgical Oncology, Department of Surgery, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
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41
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Clinical Applications of Polymeric Micelle Carrier Systems in Chemotherapy and Image Diagnosis of Solid Tumors. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.jecm.2011.06.002] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Shiraishi K, Harada Y, Kawano K, Maitani Y, Hori K, Yanagihara K, Takigahira M, Yokoyama M. Tumor Environment Changed by Combretastatin Derivative (Cderiv) Pretreatment That Leads to Effective Tumor Targeting, MRI Studies, and Antitumor Activity of Polymeric Micelle Carrier Systems. Pharm Res 2011; 29:178-86. [DOI: 10.1007/s11095-011-0525-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Accepted: 06/29/2011] [Indexed: 10/18/2022]
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43
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Xue Y, Tang X, Huang J, Zhang X, Yu J, Zhang Y, Gui S. Anti-tumor efficacy of polymer–platinum(II) complex micelles fabricated from folate conjugated PEG-graft-α,β-poly [(N-amino acidyl)-aspartamide] and cis-dichlorodiammine platinum(II) in tumor-bearing mice. Colloids Surf B Biointerfaces 2011; 85:280-8. [DOI: 10.1016/j.colsurfb.2011.02.040] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2010] [Revised: 02/21/2011] [Accepted: 02/25/2011] [Indexed: 01/08/2023]
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44
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Johnston AP, Such GK, Ng SL, Caruso F. Challenges facing colloidal delivery systems: From synthesis to the clinic. Curr Opin Colloid Interface Sci 2011. [DOI: 10.1016/j.cocis.2010.11.003] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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45
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Choi YK, Lee DW, Yong CS, Choi HG, Bronich TK, Kim JO. Biostable Poly(ethylene oxide)-b-poly(methacrylic acid) Micelles forpH-triggered Release of Doxorubicin. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2011. [DOI: 10.4333/kps.2011.41.2.111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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46
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Harada Y, Yamamoto T, Sakai M, Saiki T, Kawano K, Maitani Y, Yokoyama M. Effects of organic solvents on drug incorporation into polymeric carriers and morphological analyses of drug-incorporated polymeric micelles. Int J Pharm 2011; 404:271-80. [DOI: 10.1016/j.ijpharm.2010.11.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2010] [Revised: 10/21/2010] [Accepted: 11/11/2010] [Indexed: 10/18/2022]
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47
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Nishiya T, Matsumura Y, Kataoka K. [Translational research of DDS based on polymeric micelles]. Nihon Yakurigaku Zasshi 2011; 137:75-78. [PMID: 21321455 DOI: 10.1254/fpj.137.75] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
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48
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Biodegradable Polymeric Assemblies for Biomedical Materials. POLYMERS IN NANOMEDICINE 2011. [DOI: 10.1007/12_2011_160] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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49
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Hasegawa U, van der Vlies AJ, Simeoni E, Wandrey C, Hubbell JA. Carbon monoxide-releasing micelles for immunotherapy. J Am Chem Soc 2010; 132:18273-80. [PMID: 21128648 DOI: 10.1021/ja1075025] [Citation(s) in RCA: 168] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
With the discovery of important biological roles of carbon monoxide (CO), the use of this gas as a therapeutic agent has attracted attention. However, the medical application of this gas has been hampered by the complexity of the administration method. To overcome this problem, several transition-metal carbonyl complexes, such as Ru(CO)(3)Cl(glycinate), [Ru(CO)(3)Cl(2)](2), and Fe(η(4)-2-pyrone)(CO)(3), have been used as CO-releasing molecules both in vitro and in vivo. We sought to develop micellar forms of metal carbonyl complexes that would display slowed diffusion in tissues and thus better ability to target distal tissue drainage sites. Specifically, we aimed to develop a new CO-delivery system using a polymeric micelle having a Ru(CO)(3)Cl(amino acidate) structure as a CO-releasing segment. The CO-releasing micelles were prepared from triblock copolymers composed of a hydrophilic poly(ethylene glycol) block, a poly(ornithine acrylamide) block bearing Ru(CO)(3)Cl(ornithinate) moieties, and a hydrophobic poly(n-butylacrylamide) block. The polymers formed spherical micelles in the range of 30-40 nm in hydrodynamic diameter. Further characterization revealed the high CO-loading capacity of the micelles. CO-release studies showed that the micelles were stable in physiological buffer and serum and released CO in response to thiol-containing compounds such as cysteine. The CO release of the micelles was slower than that of Ru(CO)(3)Cl(glycinate). In addition, the CO-releasing micelles efficiently attenuated the lipopolysaccharide-induced NF-κB activation of human monocytes, while Ru(CO)(3)Cl(glycinate) did not show any beneficial effects. Moreover, cell viability assays revealed that the micelles significantly reduced the cytotoxicity of the Ru(CO)(3)Cl(amino acidate) moiety. This novel CO-delivery system based on CO-releasing micelles may be useful for therapeutic applications of CO.
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Affiliation(s)
- Urara Hasegawa
- Institute of Bioengineering (IBI), Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne CH-1015, Switzerland
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Polyion complex micelle MRI contrast agents from poly(ethylene glycol)-b-poly(l-lysine) block copolymers having Gd-DOTA; preparations and their control of T1-relaxivities and blood circulation characteristics. J Control Release 2010; 148:160-7. [DOI: 10.1016/j.jconrel.2010.08.018] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2010] [Revised: 08/04/2010] [Accepted: 08/12/2010] [Indexed: 11/17/2022]
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