151
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Puthenveetil R, Vinogradova O. Solution NMR: A powerful tool for structural and functional studies of membrane proteins in reconstituted environments. J Biol Chem 2019; 294:15914-15931. [PMID: 31551353 DOI: 10.1074/jbc.rev119.009178] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
A third of the genes in prokaryotic and eukaryotic genomes encode membrane proteins that are either essential for signal transduction and solute transport or function as scaffold structures. Unlike many of their soluble counterparts, the overall structural and functional organization of membrane proteins is sparingly understood. Recent advances in X-ray crystallography, cryo-EM, and nuclear magnetic resonance (NMR) are closing this gap by enabling an in-depth view of these ever-elusive proteins at atomic resolution. Despite substantial technological advancements, however, the overall proportion of membrane protein entries in the Protein Data Bank (PDB) remains <4%. This paucity is mainly attributed to difficulties associated with their expression and purification, propensity to form large multisubunit complexes, and challenges pertinent to identification of an ideal detergent, lipid, or detergent/lipid mixture that closely mimic their native environment. NMR is a powerful technique to obtain atomic-resolution and dynamic details of a protein in solution. This is accomplished through an assortment of isotopic labeling schemes designed to acquire multiple spectra that facilitate deduction of the final protein structure. In this review, we discuss current approaches and technological developments in the determination of membrane protein structures by solution NMR and highlight recent structural and mechanistic insights gained with this technique. We also discuss strategies for overcoming size limitations in NMR applications, and we explore a plethora of membrane mimetics available for the structural and mechanistic understanding of these essential cellular proteins.
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Affiliation(s)
- Robbins Puthenveetil
- Department of Molecular and Cell Biology, college of liberal arts and sciences, University of Connecticut at Storrs, Storrs, Connecticut 06269
| | - Olga Vinogradova
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Connecticut at Storrs, Storrs, Connecticut 06269
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152
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Lancet D, Segrè D, Kahana A. Twenty Years of "Lipid World": A Fertile Partnership with David Deamer. Life (Basel) 2019; 9:E77. [PMID: 31547028 PMCID: PMC6958426 DOI: 10.3390/life9040077] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 09/08/2019] [Accepted: 09/10/2019] [Indexed: 12/17/2022] Open
Abstract
"The Lipid World" was published in 2001, stemming from a highly effective collaboration with David Deamer during a sabbatical year 20 years ago at the Weizmann Institute of Science in Israel. The present review paper highlights the benefits of this scientific interaction and assesses the impact of the lipid world paper on the present understanding of the possible roles of amphiphiles and their assemblies in the origin of life. The lipid world is defined as a putative stage in the progression towards life's origin, during which diverse amphiphiles or other spontaneously aggregating small molecules could have concurrently played multiple key roles, including compartment formation, the appearance of mutually catalytic networks, molecular information processing, and the rise of collective self-reproduction and compositional inheritance. This review brings back into a broader perspective some key points originally made in the lipid world paper, stressing the distinction between the widely accepted role of lipids in forming compartments and their expanded capacities as delineated above. In the light of recent advancements, we discussed the topical relevance of the lipid worldview as an alternative to broadly accepted scenarios, and the need for further experimental and computer-based validation of the feasibility and implications of the individual attributes of this point of view. Finally, we point to possible avenues for exploring transition paths from small molecule-based noncovalent structures to more complex biopolymer-containing proto-cellular systems.
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Affiliation(s)
- Doron Lancet
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot 7610010, Israel.
| | - Daniel Segrè
- Bioinformatics Program, Department of Biology, Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA.
| | - Amit Kahana
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot 7610010, Israel.
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153
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Abstract
We describe a genetically encoded micelle for targeted delivery consisting of a diblock polypeptide with segments derived from repetitive protein motifs inspired by Drosophila melanogaster Rec-1 resilin and human tropoelastin with a C-terminal fusion of an integrin-targeting fibronectin type III domain. By systematically varying the weight fraction of the hydrophilic elastin-like polypeptide (ELP) block and molecular weight of the diblock polypeptide, we designed micelles of different morphologies that modulate the binding avidity of the human wild-type 10th fibronectin domain (Fn3) as a function of shape. We show that wormlike micelles that present the Fn3 domain have a 1000-fold greater avidity for the αvβ3 receptor compared to the monomer ligand and an avidity that is greater than a clinically relevant antibody that is driven by their multivalency. The amplified avidity of these micelles leads to significantly increased cellular internalization, a feature that may have utility for the intracellular delivery of drugs that are loaded into the core of these micelles.
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Affiliation(s)
- Michael Dzuricky
- Department of Biomedical Engineering , Duke University , Durham , North Carolina 27708 , United States
| | - Sinan Xiong
- Department of Biomedical Engineering , Duke University , Durham , North Carolina 27708 , United States
| | - Patrick Weber
- Department of Biomedical Engineering , Duke University , Durham , North Carolina 27708 , United States
- Swiss Nanoscience Institute , University of Basel , Basel 4056 , Switzerland
| | - Ashutosh Chilkoti
- Department of Biomedical Engineering , Duke University , Durham , North Carolina 27708 , United States
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154
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Kim TH, Alle M, Kim JC. Oxidation- and Temperature-Responsive Poly(hydroxyethyl acrylate- co-phenyl vinyl sulfide) Micelle as a Potential Anticancer Drug Carrier. Pharmaceutics 2019; 11:E462. [PMID: 31500154 PMCID: PMC6781318 DOI: 10.3390/pharmaceutics11090462] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 08/27/2019] [Accepted: 09/04/2019] [Indexed: 01/06/2023] Open
Abstract
Poly(hydroxyethyl acrylate-co-phenyl vinyl sulfide) (P(HEA-co-PVS)), as an oxidizable amphiphilic polymer, was prepared for the fabrication of an oxidation- and temperature-responsive micelle for the delivery of doxorubicin (DOX). The interfacial activity of H2O2-treated P(HEA-co-PVS) was significantly lower than that of the untreated variety, possibly because of the oxidization of PVS. P(HEA-co-PVS) exhibited a lower critical solution temperature (LCST) behavior and the LCST increased upon H2O2 treatment. The copolymer micelles, prepared by the dialysis method, were found to be round particles (less than 100 nm) on TEM micrograph. The release degree of Nile red loaded in the micelles was higher when the H2O2 concentration was higher, possibly because the micelles could be solubilized more readily at a higher H2O2 concentration. The release degree was more strongly dependent on the oxidizing agent concentration when the temperature was higher. DOX loaded in the micelles suppressed the in vitro growth of KB cells (a human cancer cell type originating from the cervix) much more effectively than DOX loaded in an unoxidizable control micelle and free DOX, possibly because the copolymer would undergo an increase in its LCST, lose its amphiphilic property, and the micelles would be disassembled. The DOX-loaded micelles were readily internalized into KB cells, as evidenced by flow cytometry (FACS) and confocal laser scanning microscopy (CLSM).
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Affiliation(s)
- Tae Hoon Kim
- Department of Medical Biomaterials Engineering, College of Biomedical Science and Institute of Bioscience and Biotechnology, Kangwon National University, 192-1, Hyoja 2 dong, Chuncheon, Kangwon-do 200-701, Korea.
| | - Madhusudhan Alle
- Department of Medical Biomaterials Engineering, College of Biomedical Science and Institute of Bioscience and Biotechnology, Kangwon National University, 192-1, Hyoja 2 dong, Chuncheon, Kangwon-do 200-701, Korea
| | - Jin-Chul Kim
- Department of Medical Biomaterials Engineering, College of Biomedical Science and Institute of Bioscience and Biotechnology, Kangwon National University, 192-1, Hyoja 2 dong, Chuncheon, Kangwon-do 200-701, Korea.
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155
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Liu H, Wang X, Huang Y, Li H, Peng C, Yang H, Li J, Hong H, Lei Z, Zhang X, Li Z. Biocompatible Croconaine Aggregates with Strong 1.2-1.3 μm Absorption for NIR-IIa Photoacoustic Imaging in Vivo. ACS Appl Mater Interfaces 2019; 11:30511-30517. [PMID: 31361118 DOI: 10.1021/acsami.9b06824] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Although photoacoustic imaging (PAI) in the second near-infrared (NIR-II) region (1.0-1.7 μm) is admired for deeper penetration and higher contrast, few organic NIR-II absorbers are available as exogenous contrast agents in vivo. A1094 belongs to the very few ∼1.1 μm absorbing croconaine dyes that have superior extinction coefficient and tend to form irregular aggregation. In this study, shape-controlled A1094@DSPE-PEG2000 micelles with a J-aggregate core with remarkable 1.2-1.3 μm absorption are fabricated as biocompatible organic agents. Excellent capabilities in photothermal conversion, photostability, and PAI are found in in vitro studies. In vivo PAI of inguinal lymph nodes and in situ glioma pre- and post-resection, all demonstrate high lymph/tumor-targeting efficiency. An ∼4.54 mm deep brain lesion is imaged at 1200 nm with minimized background and increased contrast compared to 970 nm. Overall, we achieved significant bathochromic shift of organic absorbers and expanded their PAI application to the long-wavelength end of the NIR-IIa region.
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Affiliation(s)
| | - Xiangyu Wang
- Department of Nuclear Medicine , Hebei General Hospital , Shijiazhuang 050051 , China
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156
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Dolan MA, Basa PN, Zozulia O, Lengyel Z, Lebl R, Kohn EM, Bhattacharya S, Korendovych IV. Catalytic Nanoassemblies Formed by Short Peptides Promote Highly Enantioselective Transfer Hydrogenation. ACS Nano 2019; 13:9292-9297. [PMID: 31314486 PMCID: PMC7235949 DOI: 10.1021/acsnano.9b03880] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Self-assembly enables formation of incredibly diverse supramolecular structures with practically important functions from simple and inexpensive building blocks. Here, we show how a semirational, bottom-up approach to create emerging properties can be extended to a design of highly enantioselective catalytic nanoassemblies. The designed peptides comprising as few as two amino acid residues spontaneously self-assemble in the presence of metal ions to form supramolecular, vesicle-like nanoassemblies that promote transfer hydrogenation of ketones in an aqueous phase with excellent conversion rates and enantioselectivities (>90% ee).
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Affiliation(s)
- Martin A Dolan
- Department of Chemistry , Syracuse University , 111 College Place , Syracuse , New York 13244 , United States
| | - Prem N Basa
- Department of Chemistry , Syracuse University , 111 College Place , Syracuse , New York 13244 , United States
| | - Oleksii Zozulia
- Department of Chemistry , Syracuse University , 111 College Place , Syracuse , New York 13244 , United States
| | - Zsófia Lengyel
- Department of Chemistry , Syracuse University , 111 College Place , Syracuse , New York 13244 , United States
| | - René Lebl
- Department of Chemistry , Syracuse University , 111 College Place , Syracuse , New York 13244 , United States
| | - Eric M Kohn
- Department of Chemistry , Syracuse University , 111 College Place , Syracuse , New York 13244 , United States
| | - Sagar Bhattacharya
- Department of Chemistry , Syracuse University , 111 College Place , Syracuse , New York 13244 , United States
| | - Ivan V Korendovych
- Department of Chemistry , Syracuse University , 111 College Place , Syracuse , New York 13244 , United States
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157
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Morris SAV, Ananthapadmanabhan KP, Kasting GB. Anionic Surfactant-Induced Changes in Skin Permeability. J Pharm Sci 2019; 108:3640-3648. [PMID: 31374320 DOI: 10.1016/j.xphs.2019.06.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 06/05/2019] [Accepted: 06/25/2019] [Indexed: 02/07/2023]
Abstract
Anionic surfactants compromise skin's barrier function by damaging stratum corneum lipids and proteins. The objective of this study was to examine anionic surfactant-induced changes in the skin's polar and transcellular pathways and the resulting impact on surfactant penetration into the skin. Three anionic surfactant formulations and one control formulation were each applied to split-thickness human cadaver skin in vitro for 24 h. Electrical conductivity of the skin, determined using a four-terminal resistance method, and water permeation across the skin, determined using a radiolabeled water tracer, were simultaneously measured at several points over the experimental period. Surfactant permeation across the skin was similarly measured using a radiolabeled sodium dodecyl sulfate tracer. Anionic surfactants rapidly enhanced skin electrical conductivity and water permeability in the excised human skin, resulting in nonlinear enhancements in surfactant permeation across the skin over time. Surfactant penetration into the skin was found to increase linearly with increasing surfactant monomer concentration. Surfactant zeta potential was found to correlate well with skin conductivity, water permeation across the skin, and surfactant permeation across the skin, particularly with long surfactant exposures. Micelle charge is a significant predictor of anionic surfactant-induced damage to the human skin, with more highly charged surfactants inducing the most damage.
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Affiliation(s)
- Stephanie A V Morris
- Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, Ohio 45267-0004
| | | | - Gerald B Kasting
- Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, Ohio 45267-0004.
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158
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Rayni I, El Bakri Y, Lai CH, Sebhaoui J, Essassi EM, Mague JT. Crystal structure, DFT study and Hirshfeld surface analysis of 1-nonyl-2,3-di-hydro-1 H-indole-2,3-dione. Acta Crystallogr E Crystallogr Commun 2019; 75:1140-1144. [PMID: 31417780 PMCID: PMC6690466 DOI: 10.1107/s2056989019009691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 07/08/2019] [Indexed: 11/10/2022]
Abstract
In the title mol-ecule, C17H23NO2, the di-hydro-indole portion is planar (r.m.s. deviation = 0.0157 Å) and the nonyl substituent is in an 'extended' conformation. In the crystal, the nonyl chains inter-calate and the di-hydro-indole-dione units are associated through C-H⋯O hydrogen bonds to form micellar blocks. Based on the Hirshfeld surface analysis, the most important inter-molecular inter-action is the H⋯H inter-action.
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Affiliation(s)
- Ibtissam Rayni
- Laboratoire de Chimie Organique Hétérocyclique, Centre de Recherche des Sciences des Médicaments, URAC 21, Pôle de Compétence Pharmacochimie, Av Ibn Battouta, BP 1014, Faculté des Sciences, Université Mohammed V, Rabat, Morocco
| | - Youness El Bakri
- Organic Chemistry Department, Faculty of Science, RUDN University, Miklukho-Maklaya St. 6, 117198 Moscow, Russian Federation
| | - Chin-Hung Lai
- Department of Medical Applied Chemistry, Chung Shan Medical University, Taichung 40241, Taiwan
- Department of Medical Education, Chung Shan Medical University Hospital, 402 Taichung, Taiwan
| | - Jihad Sebhaoui
- Laboratoire de Chimie Organique Hétérocyclique, Centre de Recherche des Sciences des Médicaments, URAC 21, Pôle de Compétence Pharmacochimie, Av Ibn Battouta, BP 1014, Faculté des Sciences, Université Mohammed V, Rabat, Morocco
| | - El Mokhtar Essassi
- Laboratoire de Chimie Organique Hétérocyclique, Centre de Recherche des Sciences des Médicaments, URAC 21, Pôle de Compétence Pharmacochimie, Av Ibn Battouta, BP 1014, Faculté des Sciences, Université Mohammed V, Rabat, Morocco
| | - Joel T. Mague
- Department of Chemistry, Tulane University, New Orleans, LA 70118, USA
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159
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Kasahara F, Kato T, Idota Y, Takahashi H, Kakinuma C, Yano K, Arakawa H, Hara K, Miyajima C, Ogihara T. Reduction Effect of Calcium Alginate on Blood Triglyceride Levels Causing the Inhibition of Hepatic and Total Body Accumulation of Fat in Rats. Biol Pharm Bull 2019; 42:365-372. [PMID: 30828069 DOI: 10.1248/bpb.b18-00530] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In this study, rats were fed a high-fat diet containing calcium alginate (Ca-Alg) for 5 weeks to examine the effects of Ca-Alg on lipid metabolism including triglyceride (TG) levels in the blood. We also investigated the mechanism of the TG-reducing effect of Alg in vitro. Rats were randomized into 5 groups: high-fat diet group (14% (w/w) lard, HF); three Ca-Alg-containing diet groups (2.5, 5 or 10% (w/w) Ca-Alg) and a resistant maltodextrin (RMD) diet group as a positive control (with 5% (w/w) RMD). The 10% Ca-Alg group showed a significant reduction of body weight increase from the 7th day. In addition, the increase of TG in blood was significantly suppressed, and the amount of TG excreted in feces was increased. Increase of body fat mass was in the order HF > RMD > Ca-Alg 2.5% > Ca-Alg 5% > Ca-Alg 10%, while the total weight of the extracted fat tissues was significantly reduced in the RMD, 5% and 10% Ca-Alg groups. Hepatic pathology showed clear circular vacuoles apparently representing TG accumulation in the HF group, while fewer vacuoles were seen in the Ca-Alg groups. The results of in vitro experiments indicated that Ca-Alg does not directly inhibit lipase activity, but may suppress absorption of TG by forming non-absorbable macromolecular micelles containing TG. These results suggest that Ca-Alg promotes excretion and suppresses absorption of TG, leading to reduced blood TG levels, and decreased hepatic and total body accumulation of fat. The findings should be helpful for designing future clinical trials.
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Affiliation(s)
- Fumiyoshi Kasahara
- Faculty of Pharmacy, Takasaki University of Health and Welfare.,Kimica Corporation
| | - Takako Kato
- Faculty of Pharmacy, Takasaki University of Health and Welfare.,Kendai Translational Research Center
| | - Yoko Idota
- Faculty of Pharmacy, Takasaki University of Health and Welfare.,Kendai Translational Research Center
| | - Hitoe Takahashi
- Faculty of Pharmacy, Takasaki University of Health and Welfare.,Kendai Translational Research Center
| | | | - Kentaro Yano
- Faculty of Pharmacy, Takasaki University of Health and Welfare
| | - Hiroshi Arakawa
- Faculty of Pharmacy, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University
| | | | | | - Takuo Ogihara
- Faculty of Pharmacy, Takasaki University of Health and Welfare.,Laboratory of Clinical Pharmacokinetics, Graduate School of Pharmaceutical Sciences, Takasaki University of Health and Welfare
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160
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Kim K, Choi H, Choi ES, Park MH, Ryu JH. Hyaluronic Acid-Coated Nanomedicine for Targeted Cancer Therapy. Pharmaceutics 2019; 11:E301. [PMID: 31262049 PMCID: PMC6680416 DOI: 10.3390/pharmaceutics11070301] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 06/25/2019] [Accepted: 06/26/2019] [Indexed: 11/24/2022] Open
Abstract
Hyaluronic acid (HA) has been widely investigated in cancer therapy due to its excellent characteristics. HA, which is a linear anionic polymer, has biocompatibility, biodegradability, non-immunogenicity, non-inflammatory, and non-toxicity properties. Various HA nanomedicines (i.e., micelles, nanogels, and nanoparticles) can be prepared easily using assembly and modification of its functional groups such as carboxy, hydroxy and N-acetyl groups. Nanometer-sized HA nanomedicines can selectively deliver drugs or other molecules into tumor sites via their enhanced permeability and retention (EPR) effect. In addition, HA can interact with overexpressed receptors in cancer cells such as cluster determinant 44 (CD44) and receptor for HA-mediated motility (RHAMM) and be degraded by a family of enzymes called hyaluronidase (HAdase) to release drugs or molecules. By interaction with receptors or degradation by enzymes inside cancer cells, HA nanomedicines allow enhanced targeting cancer therapy. In this article, recent studies about HA nanomedicines in drug delivery systems, photothermal therapy, photodynamic therapy, diagnostics (because of the high biocompatibility), colloidal stability, and cancer targeting are reviewed for strategies using micelles, nanogels, and inorganic nanoparticles.
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Affiliation(s)
- Kibeom Kim
- Department of Chemistry, School of Natural Sciences, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea
| | - Huyeon Choi
- Department of Chemistry, School of Natural Sciences, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea
| | - Eun Seong Choi
- Department of Chemistry, School of Natural Sciences, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea
| | - Myoung-Hwan Park
- Department of Chemistry and Life Science, Sahmyook University, Seoul 01795, Korea.
| | - Ja-Hyoung Ryu
- Department of Chemistry, School of Natural Sciences, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea.
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161
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Hou Y, Zhang F, Lan J, Sun F, Li J, Li M, Song K, Wu X. Ultra-small micelles based on polyoxyl 15 hydroxystearate for ocular delivery of myricetin: optimization, in vitro, and in vivo evaluation. Drug Deliv 2019; 26:158-167. [PMID: 30822157 PMCID: PMC6407586 DOI: 10.1080/10717544.2019.1568624] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The aim was to develop a nanocarrier based on polyoxyl 15 hydroxystearate (Kolliphor® HS15, HS15) micelles for the solubility, stability, and ocular delivery of myricetin (Myr). An optimized ratio of HS15 and Myr was prepared to fabricate HS15-Myr micelle ophthalmic solution. Myr-encapsulating HS15 micelles (HS15-Myr micelles) were subjected to physicochemical characterizations. The chemical stability of Myr in HS15 micelles and storage stability of HS15-Myr micelle ophthalmic solutions were evaluated. In vitro parallel artificial membrane permeability assay and antioxidant activity of Myr in HS15 micelles were also measured. In vivo ocular tolerance, corneal permeation, and anti-inflammatory efficacy studies were conducted following ocular topical administration. HS15-Myr micelles were successfully prepared and presented transparent appearance with high encapsulation (96.12 ± 0.31%), ultra-small micelle size (a mean diameter of 12.17 ± 0.73 nm), uniform size distribution (polydispersity index [PDI] = 0.137 ± 0.013), and negative surface charge (- [4.28 ± 0.42] mV). Myr in HS15 micelle solution demonstrated higher aqueous stability than the free Myr solution among the accepted pH range for eyedrops. HS15-Myr micelle ophthalmic solution demonstrated high storage stability at 4 °C and 25 °C. HS15 micelles could significantly improve in vitro antioxidant activity and faster membrane permeation of Myr. No irritations or corneal damage were revealed in rabbit eyes after ocular administration of HS15-Myr micelle solution. In vivo corneal permeation study demonstrated that HS15-Myr micelles could penetrate the cornea efficiently in mouse eyes. Further, HS15-Myr micelles also demonstrated significant in vivo anti-inflammatory activity. It can be concluded that HS15 micelles are a potential ophthalmic delivery nanocarrier for poorly soluble drugs such as Myr.
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Affiliation(s)
- Yuzhen Hou
- a Department of Pharmacy, College of Chemical Engineering , Qingdao University of Science and Technology , Qingdao , China
| | - Fan Zhang
- a Department of Pharmacy, College of Chemical Engineering , Qingdao University of Science and Technology , Qingdao , China
| | - Jie Lan
- b Qingdao Eye Hospital, Shandong Eye Institute, Shandong Academy of Medical Sciences , Qingdao , China
| | - Fengyuan Sun
- a Department of Pharmacy, College of Chemical Engineering , Qingdao University of Science and Technology , Qingdao , China
| | - Jun Li
- b Qingdao Eye Hospital, Shandong Eye Institute, Shandong Academy of Medical Sciences , Qingdao , China
| | - Mengshuang Li
- a Department of Pharmacy, College of Chemical Engineering , Qingdao University of Science and Technology , Qingdao , China.,c Qingdao Women and Children's Hospital, Pharmacy Intravenous Admixture Services , Qingdao , China
| | - Kaichao Song
- a Department of Pharmacy, College of Chemical Engineering , Qingdao University of Science and Technology , Qingdao , China
| | - Xianggen Wu
- a Department of Pharmacy, College of Chemical Engineering , Qingdao University of Science and Technology , Qingdao , China
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162
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Abstract
Systems chemistry has been a key component of origin of life research, invoking models of life's inception based on evolving molecular networks. One such model is the graded autocatalysis replication domain (GARD) formalism embodied in a lipid world scenario, which offers rigorous computer simulation based on defined chemical kinetics equations. GARD suggests that the first pre-RNA life-like entities could have been homeostatically-growing assemblies of amphiphiles, undergoing compositional replication and mutations, as well as rudimentary selection and evolution. Recent progress in molecular dynamics has provided an experimental tool to study complex biological phenomena such as protein folding, ligand-receptor interactions, and micellar formation, growth, and fission. The detailed molecular definition of GARD and its inter-molecular catalytic interactions make it highly compatible with molecular dynamics analyses. We present a roadmap for simulating GARD's kinetic and thermodynamic behavior using various molecular dynamics methodologies. We review different approaches for testing the validity of the GARD model by following micellar accretion and fission events and examining compositional changes over time. Near-future computational advances could provide empirical delineation for further system complexification, from simple compositional non-covalent assemblies towards more life-like protocellular entities with covalent chemistry that underlies metabolism and genetic encoding.
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Affiliation(s)
- Amit Kahana
- Dept. Molecular Genetics, The Weizmann Institute of Science, Rehovot 7610010, Israel.
| | - Doron Lancet
- Dept. Molecular Genetics, The Weizmann Institute of Science, Rehovot 7610010, Israel.
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163
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Hobson NJ, Weng X, Siow B, Veiga C, Ashford M, Thanh NT, Schätzlein AG, Uchegbu IF. Clustering superparamagnetic iron oxide nanoparticles produces organ-targeted high-contrast magnetic resonance images. Nanomedicine (Lond) 2019; 14:1135-1152. [PMID: 31050589 DOI: 10.2217/nnm-2018-0370] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Aim: Superparamagnetic iron oxide nanoparticles (SPIONs) have been used as magnetic resonance imaging (MRI) contrast agents; however, a number of T2-weighted imaging SPIONs have been withdrawn due to their poor clinical contrast performance. Our aim was to significantly improve SPION T2-weighted MRI contrast by clustering SPIONs within novel chitosan amphiphiles. Methods: Clustering SPIONs was achieved by encapsulation of hydrophobic-coated SPIONs with an amphiphilic chitosan polymer (GCPQ). Results: Clustering increases the spin-spin (r2) to spin-lattice (r1) relaxation ratio (r2/r1) from 3.0 to 79.1, resulting in superior contrast. Intravenously administered clustered SPIONs accumulated only in the liver and spleen; with the reduction in T2 relaxation confined, in the liver, to the extravascular space, giving clear MRI images of the liver vasculature.
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Affiliation(s)
- Nicholas J Hobson
- UCL School of Pharmacy, 29-39 Brunswick Square, WC1N 1AX London.,UCL Healthcare Biomagnetic & Nanomaterials Laboratories, 21 Albemarle Street, W1S 4BS London
| | - Xian Weng
- UCL School of Pharmacy, 29-39 Brunswick Square, WC1N 1AX London.,UCL Healthcare Biomagnetic & Nanomaterials Laboratories, 21 Albemarle Street, W1S 4BS London
| | - Bernard Siow
- Centre for Advanced Biomedical Imaging, UCL, Gower Street, WC1E 6BT London
| | - Catarina Veiga
- UCL Medical Physics & Biomedical Engineering, Malet Place, Gower Street, WC1E 6BT London
| | - Marianne Ashford
- Advanced Drug Delivery, Pharmaceutical Sciences, IMED Biotech Unit, AstraZeneca, Macclesfield, SK10 2NA Cheshire
| | - Nguyen Tk Thanh
- UCL Healthcare Biomagnetic & Nanomaterials Laboratories, 21 Albemarle Street, W1S 4BS London.,Biophysics Group, UCL, Gower Street, WC1E 6BT London
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164
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Chen M, Feng X, Xu W, Wang Y, Yang Y, Jiang Z, Ding J. PEGylated Polyurea Bearing Hindered Urea Bond for Drug Delivery. Molecules 2019; 24:E1538. [PMID: 31003544 PMCID: PMC6515048 DOI: 10.3390/molecules24081538] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 04/06/2019] [Accepted: 04/13/2019] [Indexed: 12/03/2022] Open
Abstract
In recent years, polyureas with dynamic hindered urea bonds (HUBs), a class of promising biomedical polymers, have attracted wide attention as a result of their controlled hydrolytic properties. The effect of the chemical structures on the properties of polyureas and their assemblies has rarely been reported. In this study, four kinds of polyureas with different chemical groups have been synthesized, and the polyureas from cyclohexyl diisocyanate and tert-butyl diamine showed the fastest hydrolytic rate. The amphiphilic polyurea composed of hydrophobic cyclohexyl-tert-butyl polyurea and hydrophilic poly(ethylene glycol) (PEG) was synthesized for the controlled delivery of the antitumor drug paclitaxel (PTX). The PTX-loaded PEGylated polyurea micelle more effectively entered into the murine breast cancer 4T1 cells and inhibited the corresponding tumor growth in vitro and in vivo. Therefore, the PEGylated polyurea with adjustable degradation might be a promising polymer matrix for drug delivery.
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Affiliation(s)
- Meishan Chen
- Chemical Engineering Institute, Changchun University of Technology, 2055 Yan'an Street, Changchun 130012, China.
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China.
| | - Xiangru Feng
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China.
- Jilin Biomedical Polymers Engineering Laboratory, 5625 Renmin Street, Changchun 130022, China.
| | - Weiguo Xu
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China.
- Jilin Biomedical Polymers Engineering Laboratory, 5625 Renmin Street, Changchun 130022, China.
| | - Yanqiao Wang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China.
- Jilin Biomedical Polymers Engineering Laboratory, 5625 Renmin Street, Changchun 130022, China.
| | - Yanan Yang
- Chemical Engineering Institute, Changchun University of Technology, 2055 Yan'an Street, Changchun 130012, China.
| | - Zhongyu Jiang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China.
- Jilin Biomedical Polymers Engineering Laboratory, 5625 Renmin Street, Changchun 130022, China.
| | - Jianxun Ding
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China.
- Jilin Biomedical Polymers Engineering Laboratory, 5625 Renmin Street, Changchun 130022, China.
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165
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Abstract
AIM This study tested the effect of TNF-α, a cytokine associated with inflammation, and tumor progression, on enhancing doxorubicin (Dox) tumor accumulation, and improving its therapeutic effect. MATERIALS & METHODS 4T1 murine breast cancer cells were injected into the flanks of Balb/c female mice and treated with TNF-α, Dox and a combination of both. RESULTS & CONCLUSION The addition of TNF-α to Dox did not improve anticancer activity against 4T1 breast cancer cells in vitro. In 4T1 tumor-bearing mice, the pretreatment with TNF-α increased tumor Dox concentration. The accumulation of Dox was even higher when systemically injected with a micellar formulation of Dox. This work provides a rationale for testing the combination on breast cancer patients.
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166
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Hill LK, Frezzo JA, Katyal P, Hoang DM, Gironda ZBY, Xu C, Xie X, Delgado-Fukushima E, Wadghiri YZ, Montclare JK. Protein-Engineered Nanoscale Micelles for Dynamic 19F Magnetic Resonance and Therapeutic Drug Delivery. ACS Nano 2019; 13:2969-2985. [PMID: 30758189 PMCID: PMC6945506 DOI: 10.1021/acsnano.8b07481] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Engineered proteins provide an interesting template for designing fluorine-19 (19F) magnetic resonance imaging (MRI) contrast agents, yet progress has been hindered by the unpredictable relaxation properties of fluorine. Herein, we present the biosynthesis of a protein block copolymer, termed "fluorinated thermoresponsive assembled protein" (F-TRAP), which assembles into a monodisperse nanoscale micelle with interesting 19F NMR properties and the ability to encapsulate and release small therapeutic molecules, imparting potential as a diagnostic and therapeutic (theranostic) agent. The assembly of the F-TRAP micelle, composed of a coiled-coil pentamer corona and a hydrophobic, thermoresponsive elastin-like polypeptide core, results in a drastic depression in spin-spin relaxation ( T2) times and unaffected spin-lattice relaxation ( T1) times. The nearly unchanging T1 relaxation rates and linearly dependent T2 relaxation rates have allowed for detection via zero echo time 19F MRI, and the in vivo MR potential has been preliminarily explored using 19F magnetic resonance spectroscopy (MRS). This fluorinated micelle has also demonstrated the ability to encapsulate the small-molecule chemotherapeutic doxorubicin and release its cargo in a thermoresponsive manner owing to its inherent stimuli-responsive properties, presenting an interesting avenue for the development of thermoresponsive 19F MRI/MRS-traceable theranostic agents.
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Affiliation(s)
- Lindsay K. Hill
- Department of Chemical and Biomolecular Engineering, New York University Tandon School of Engineering, Brooklyn, New York 11201, United States
- Center for Advanced Imaging Innovation and Research (CAIR), New York University School of Medicine, New York, New York 10016, United States
- Bernard and Irene Schwartz Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, New York 10016, United States
- Department of Biomedical Engineering, SUNY Downstate Medical Center, Brooklyn, New York 11203, United States
| | - Joseph A. Frezzo
- Department of Chemical and Biomolecular Engineering, New York University Tandon School of Engineering, Brooklyn, New York 11201, United States
| | - Priya Katyal
- Department of Chemical and Biomolecular Engineering, New York University Tandon School of Engineering, Brooklyn, New York 11201, United States
| | - Dung Minh Hoang
- Center for Advanced Imaging Innovation and Research (CAIR), New York University School of Medicine, New York, New York 10016, United States
- Bernard and Irene Schwartz Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, New York 10016, United States
| | - Zakia Ben Youss Gironda
- Center for Advanced Imaging Innovation and Research (CAIR), New York University School of Medicine, New York, New York 10016, United States
- Bernard and Irene Schwartz Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, New York 10016, United States
| | - Cynthia Xu
- Department of Chemical and Biomolecular Engineering, New York University Tandon School of Engineering, Brooklyn, New York 11201, United States
| | - Xuan Xie
- Department of Chemical and Biomolecular Engineering, New York University Tandon School of Engineering, Brooklyn, New York 11201, United States
| | - Erika Delgado-Fukushima
- Department of Chemical and Biomolecular Engineering, New York University Tandon School of Engineering, Brooklyn, New York 11201, United States
| | - Youssef Z. Wadghiri
- Center for Advanced Imaging Innovation and Research (CAIR), New York University School of Medicine, New York, New York 10016, United States
- Bernard and Irene Schwartz Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, New York 10016, United States
| | - Jin Kim Montclare
- Department of Chemical and Biomolecular Engineering, New York University Tandon School of Engineering, Brooklyn, New York 11201, United States
- Bernard and Irene Schwartz Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, New York 10016, United States
- Department of Chemistry, New York University, New York, New York 10012, United States
- Department of Biomaterials, New York University College of Dentistry, New York, New York 10010, United States
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167
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Chinnathambi S, Hanagata N. Photostability of quantum dot micelles under ultraviolet irradiation. LUMINESCENCE 2019; 34:472-479. [PMID: 30809921 DOI: 10.1002/bio.3618] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 01/15/2019] [Accepted: 01/25/2019] [Indexed: 12/11/2022]
Abstract
Phospholipid quantum dot micelles are useful for bio-applications because of their amphiphilicity and exceptional biocompatibilities. We investigated the uptake of phospholipid [polyethylene glycol (PEG), biotin, and folic acid terminated] modified CdSe/ZnS quantum dot micelles by cancer cells and its photostability under ultrviolet light in the C spectrum (UV-C) (254 nm) or UV-A (365 nm) light irradiation. The stability of micelles to the exposure of UV-C and UV-A light was assessed. Biotin-modified quantum dot micelles give photoluminescence enhancement under UV-C light irradiation. Folate modified micelle under UV-C and UV-A results show considerable photoluminescence enhancement. Photoluminescence lifetime measurements showed 7.04, 8.11 and 11.42 ns for PEG, folate, and biotin terminated phospholipid micelles, respectively. Folate and biotin-modified quantum dot micelles showed excellent uptake by HeLa cells under fluorescence confocal microscopy. Phospholipid CdSe/ZnS quantum dot micelles can be potentially used for diagnosis and treatment of cancer in the future.
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Affiliation(s)
- Shanmugavel Chinnathambi
- International Center for Young Scientists, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
| | - Nobutaka Hanagata
- International Center for Young Scientists, National Institute for Materials Science, Tsukuba, Ibaraki, Japan.,Nanotechnology Innovation Station, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
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168
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Harris M, Laskaratou D, Elst LV, Mizuno H, Parac-Vogt TN. Amphiphilic Nanoaggregates with Bimodal MRI and Optical Properties Exhibiting Magnetic Field Dependent Switching from Positive to Negative Contrast Enhancement. ACS Appl Mater Interfaces 2019; 11:5752-5761. [PMID: 30640430 DOI: 10.1021/acsami.8b18456] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Mixed micelles based on amphiphilic gadolinium(III)-DOTA and europium(III)-DTPA complexes were synthesized and evaluated for their paramagnetic and optical properties as potential bimodal contrast agents. Amphiphilic folate molecule for targeting the folate receptor protein, which is commonly expressed on the surface of many human cancer cells, was used in the self-assembly process in order to create nanoaggregates with targeting properties. Both targeted and nontargeted nanoaggregates formed monodisperse micelles having distribution maxima of 10 nm. The micelles show characteristic europium(III) emission with quantum yields of 2% and 1.1% for the nontargeted and targeted micelles, respectively. Fluorescence microscopy using excitation at 405 nm and emission at 575-675 nm was employed to visualize the nanoaggregates in cultured HeLa cells. The uptake of folate-targeted and nontargeted micelles is already visible after 5 h of incubation and was characterized with the europium(III) emission, which is clearly observable in the cytoplasm of the cells. The very fast longitudinal relaxivity r1 of ca. 26 s-1 mM-1 per gadolinium(III) ion was observed for both micelles at 60 MHz and 310 K. Upon increasing the magnetic field to 300 MHz, the nanoaggregates exhibited a large switching to transversal relaxivity with r2 value of ca. 52 s-1 mM-1 at 310 K. Theoretical fitting of the 1H NMRD profiles indicate that the efficient T1 and T2 relaxations are sustained by the favorable magnetic and electron-configuration properties of the gadolinium(III) ion, rotational correlation time, and coordinated water molecule. These nanoaggregates could have versatile application as a positive contrast agent at the currently used magnetic imaging field strengths and a negative contrast agent in higher field applications, while at the same time offering the possibility for the loading of hydrophobic therapeutics or targeting molecules.
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Affiliation(s)
- Michael Harris
- Department of Chemistry , KU Leuven , 3001 Leuven , Belgium
| | - Danai Laskaratou
- Department of Chemistry, Biochemistry, Molecular and Structural Biology Section, Laboratory of Biomolecular Network Dynamics , KU Leuven , 3001 Leuven , Belgium
| | - Luce Vander Elst
- Department of General, Organic, and Biomedical Chemistry, NMR and Molecular Imaging Laboratory , University of Mons , 7000 Mons , Belgium
| | - Hideaki Mizuno
- Department of Chemistry, Biochemistry, Molecular and Structural Biology Section, Laboratory of Biomolecular Network Dynamics , KU Leuven , 3001 Leuven , Belgium
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169
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Guo W, Deng L, Chen Z, Chen Z, Yu J, Liu H, Li T, Lin T, Chen H, Zhao M, Zhang L, Li G, Hu Y. Vitamin B12-conjugated sericin micelles for targeting CD320-overexpressed gastric cancer and reversing drug resistance. Nanomedicine (Lond) 2019; 14:353-370. [PMID: 30328369 DOI: 10.2217/nnm-2018-0321] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- Weihong Guo
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, PR China
| | - Lizhi Deng
- PCFM Lab & GDHPPC Lab, School of Materials Science & Engineering, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Zhaoyu Chen
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, PR China
| | - Zhian Chen
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, PR China
| | - Jiang Yu
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, PR China
| | - Hao Liu
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, PR China
| | - Tuanjie Li
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, PR China
| | - Tian Lin
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, PR China
| | - Hao Chen
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, PR China
| | - Mingli Zhao
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, PR China
| | - Liming Zhang
- PCFM Lab & GDHPPC Lab, School of Materials Science & Engineering, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Guoxin Li
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, PR China
| | - Yanfeng Hu
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, PR China
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170
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Greish K, Nehoff H, Bahman F, Pritchard T, Taurin S. Raloxifene nano- micelles effect on triple-negative breast cancer is mediated through estrogen receptor-β and epidermal growth factor receptor. J Drug Target 2019; 27:903-916. [PMID: 30615483 DOI: 10.1080/1061186x.2019.1566341] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Triple-negative breast cancer (TNBC) is an aggressive subtype of breast cancer that differs in progression, recurrence, and prognosis from other forms of breast cancer. The heterogeneity of TNBC has remained a challenge as no targeted therapy is currently available. Previously, we and others have demonstrated that raloxifene, a selective oestrogen receptor modulator, was also acting independently of the oestrogen receptor-α. However, raloxifene is characterised by a low bioavailability in vivo. Thus, we encapsulated raloxifene into a styrene-maleic acid (SMA) micelle to improve its pharmacokinetics. The micellar raloxifene had higher cytotoxicity when compared to the free formulation, promoted a higher cellular uptake and affected critical signalling pathways. Furthermore, SMA-raloxifene reduced TNBC tumour growth more efficiently than free raloxifene. Finally, we showed that this effect was partially mediated through oestrogen receptor-β. In conclusion, we have provided new insight into the role of raloxifene nanoformulation in improving the management of TNBC.
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Affiliation(s)
- Khaled Greish
- a Department of Molecular Medicine, and Nanomedicine Unit , College of Medicine and Medical Sciences, Princess Al-Jawhara Center for Molecular Medicine and Inherited Disorders, Arabian Gulf University , Manama , Kingdom of Bahrain.,b Department of Oncology , Suez Canal University , Ismailia , Egypt
| | - Hayley Nehoff
- c Department of Pharmacology and Toxicology , University of Otago , Dunedin , New Zealand
| | - Fatemah Bahman
- a Department of Molecular Medicine, and Nanomedicine Unit , College of Medicine and Medical Sciences, Princess Al-Jawhara Center for Molecular Medicine and Inherited Disorders, Arabian Gulf University , Manama , Kingdom of Bahrain
| | - Tara Pritchard
- d Malaghan Institute of Medical Research , Wellington , New Zealand
| | - Sebastien Taurin
- a Department of Molecular Medicine, and Nanomedicine Unit , College of Medicine and Medical Sciences, Princess Al-Jawhara Center for Molecular Medicine and Inherited Disorders, Arabian Gulf University , Manama , Kingdom of Bahrain
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171
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Weldon C, Ji T, Nguyen MT, Rwei A, Wang W, Hao Y, Zhao C, Mehta M, Wang BY, Tsui J, Marini RP, Kohane DS. Nanoscale Bupivacaine Formulations To Enhance the Duration and Safety of Intravenous Regional Anesthesia. ACS Nano 2019; 13:18-25. [PMID: 30351910 DOI: 10.1021/acsnano.8b05408] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Intravenous regional anesthesia (IVRA; Bier block) is commonly used to anesthetize an extremity for surgery. Limitations of the procedure include pain from the required tourniquet, the toxicity that can occur from systemic release of local anesthetics, and the lack of postoperative pain relief. We hypothesized that the nanoencapsulation of the local anesthetic would prolong local anesthesia and enhance safety. Here, we developed an ∼15 nm micellar bupivacaine formulation (M-Bup) and tested it in a rat tail vein IVRA model, in which active agents were restricted in the tail by a tourniquet for 15 min. After tourniquet removal, M-Bup provided local anesthesia for 4.5 h, which was two times longer than that from a larger dose of free bupivacaine. Approximately 100 nm liposomal bupivacaine (L-Bup) with the same drug dose as M-Bup did not cause anesthesia. Blood levels of bupivacaine after tourniquet removal were lower in animals receiving M-Bup than L-Bup or free bupivacaine, demonstrating enhanced safety. Tissue reaction to M-Bup was benign.
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Affiliation(s)
- Christopher Weldon
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology , Boston Children's Hospital, Harvard Medical School , Boston , Massachusetts 02115 , United States
- Department of Surgery , Boston Children's Hospital, Harvard Medical School , Boston , Massachusetts 02115 , United States
| | - Tianjiao Ji
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology , Boston Children's Hospital, Harvard Medical School , Boston , Massachusetts 02115 , United States
| | - Minh-Thuy Nguyen
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology , Boston Children's Hospital, Harvard Medical School , Boston , Massachusetts 02115 , United States
| | - Alina Rwei
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology , Boston Children's Hospital, Harvard Medical School , Boston , Massachusetts 02115 , United States
| | - Weiping Wang
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology , Boston Children's Hospital, Harvard Medical School , Boston , Massachusetts 02115 , United States
| | - Yi Hao
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology , Boston Children's Hospital, Harvard Medical School , Boston , Massachusetts 02115 , United States
| | - Chao Zhao
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology , Boston Children's Hospital, Harvard Medical School , Boston , Massachusetts 02115 , United States
| | - Manisha Mehta
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology , Boston Children's Hospital, Harvard Medical School , Boston , Massachusetts 02115 , United States
| | - Bruce Y Wang
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology , Boston Children's Hospital, Harvard Medical School , Boston , Massachusetts 02115 , United States
| | - Jonathan Tsui
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology , Boston Children's Hospital, Harvard Medical School , Boston , Massachusetts 02115 , United States
| | - Robert P Marini
- Division of Comparative Medicine , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , United States
| | - Daniel S Kohane
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology , Boston Children's Hospital, Harvard Medical School , Boston , Massachusetts 02115 , United States
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172
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Nagura K, Takemoto Y, Yoshino F, Bogdanov A, Chumakova N, Vorobiev AK, Imai H, Matsuda T, Shimono S, Kato T, Komatsu N, Tamura R. Magnetic Mixed Micelles Composed of a Non-Ionic Surfactant and Nitroxide Radicals Containing a D-Glucosamine Unit: Preparation, Stability, and Biomedical Application. Pharmaceutics 2019; 11:E42. [PMID: 30669485 PMCID: PMC6359449 DOI: 10.3390/pharmaceutics11010042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 01/05/2019] [Accepted: 01/09/2019] [Indexed: 01/05/2023] Open
Abstract
Metal-free magnetic mixed micelles (mean diameter: < 20 nm) were prepared by mixing the biocompatible non-ionic surfactant Tween 80 and the non-toxic, hydrophobic pyrrolidine-N-oxyl radicals bearing a D-glucosamine unit in pH 7.4 phosphate-buffered saline (PBS). The time-course stability and in vitro magnetic resonance imaging (MRI) contrast ability of the mixed micelles was found to depend on the length of the alkyl chain in the nitroxide radicals. It was also confirmed that the mixed micelles exhibited no toxicity in vivo and in vitro and high stability in the presence of a large excess of ascorbic acid. The in vivo MRI experiment revealed that one of these mixed micelles showed much higher contrast enhancement in the proton longitudinal relaxation time (T₁) weighted images than other magnetic mixed micelles that we have reported previously. Thus, the magnetic mixed micelles presented here are expected to serve as a promising contrast agent for theranostic nanomedicines, such as MRI-visible targeted drug delivery carriers.
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Affiliation(s)
- Kota Nagura
- Graduate School of Human and Environmental Studies, Kyoto University, Kyoto 606-8501, Japan.
| | - Yusa Takemoto
- Graduate School of Human and Environmental Studies, Kyoto University, Kyoto 606-8501, Japan.
| | - Fumi Yoshino
- Department of Obstetrics and Gynecology, Shiga University of Medical Science, Shiga 520-2192, Japan.
| | - Alexey Bogdanov
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow 119991, Russian Federation.
| | - Natalia Chumakova
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow 119991, Russian Federation.
| | - Andrey Kh Vorobiev
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow 119991, Russian Federation.
| | - Hirohiko Imai
- Graduate School of Informatics, Kyoto University, Kyoto 606-8501, Japan.
| | - Tetsuya Matsuda
- Graduate School of Informatics, Kyoto University, Kyoto 606-8501, Japan.
| | - Satoshi Shimono
- Graduate School of Human and Environmental Studies, Kyoto University, Kyoto 606-8501, Japan.
| | - Tatsuhisa Kato
- Graduate School of Human and Environmental Studies, Kyoto University, Kyoto 606-8501, Japan.
| | - Naoki Komatsu
- Graduate School of Human and Environmental Studies, Kyoto University, Kyoto 606-8501, Japan.
| | - Rui Tamura
- Graduate School of Human and Environmental Studies, Kyoto University, Kyoto 606-8501, Japan.
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173
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Mantik P, Xie M, Wong H, La H, Steigerwalt RW, Devanaboyina U, Ganem G, Shih D, Flygare JA, Fairbrother WJ, Chakravarty P, Russell D, Fernandez GE, Narang AS. Cyclodextrin Reduces Intravenous Toxicity of a Model Compound. J Pharm Sci 2019; 108:1934-1943. [PMID: 30639736 DOI: 10.1016/j.xphs.2019.01.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 12/23/2018] [Accepted: 01/04/2019] [Indexed: 10/27/2022]
Abstract
Solubilization of new chemical entities for toxicity assessment must use excipients that do not negatively impact drug pharmacokinetics and toxicology. In this study, we investigated the tolerability of a model freebase compound, GDC-0152, solubilized by pH adjustment with succinic acid and complexation with hydroxypropyl-β-cyclodextrin (HP-β-CD) to enable intravenous use. Solubility, critical micelle concentration, and association constant with HP-β-CD were determined. Blood compatibility and potential for hemolysis were assessed in vitro. Local tolerability was assessed after intravenous and subcutaneous injections in rats. A pharmacokinetic study was conducted in rats after intravenous bolus administration. GDC-0152 exhibited pH-dependent solubility that was influenced by self-association. The presence of succinic acid increased solubility in a concentration-dependent manner. HP-β-CD alone also increased solubility, but the extent of solubility enhancement was significantly lower than succinic acid alone. Inclusion of HP-β-CD in the solution of GDC-0152 improved blood compatibility, reduced hemolytic potential by ∼20-fold in vitro, and increased the maximum tolerated dose to 80 mg/kg.
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Affiliation(s)
- Priscilla Mantik
- Departments of Small Molecule Pharmaceutical Sciences, Genentech, Inc., One DNA Way, South San Francisco, California 94080.
| | - Minli Xie
- Departments of Small Molecule Pharmaceutical Sciences, Genentech, Inc., One DNA Way, South San Francisco, California 94080
| | - Harvey Wong
- Drug Metabolism and Pharmacokinetics, Genentech, Inc., One DNA Way, South San Francisco, California 94080
| | - Hank La
- Drug Metabolism and Pharmacokinetics, Genentech, Inc., One DNA Way, South San Francisco, California 94080
| | - Ronald W Steigerwalt
- Safety Assessment, Genentech, Inc., One DNA Way, South San Francisco, California 94080
| | - Uday Devanaboyina
- Safety Assessment, Genentech, Inc., One DNA Way, South San Francisco, California 94080
| | - Geoffrey Ganem
- Safety Assessment, Genentech, Inc., One DNA Way, South San Francisco, California 94080
| | - Danny Shih
- Safety Assessment, Genentech, Inc., One DNA Way, South San Francisco, California 94080
| | - John A Flygare
- Discovery Chemistry, Genentech, Inc., One DNA Way, South San Francisco, California 94080
| | - Wayne J Fairbrother
- Early Discovery Biochemistry, Genentech, Inc., One DNA Way, South San Francisco, California 94080
| | - Paroma Chakravarty
- Departments of Small Molecule Pharmaceutical Sciences, Genentech, Inc., One DNA Way, South San Francisco, California 94080
| | - David Russell
- Departments of Small Molecule Pharmaceutical Sciences, Genentech, Inc., One DNA Way, South San Francisco, California 94080
| | - Gilberto E Fernandez
- Departments of Small Molecule Pharmaceutical Sciences, Genentech, Inc., One DNA Way, South San Francisco, California 94080
| | - Ajit S Narang
- Departments of Small Molecule Pharmaceutical Sciences, Genentech, Inc., One DNA Way, South San Francisco, California 94080.
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174
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Kamrani SME, Hadizadeh F. A coarse-grain MD (molecular dynamic) simulation of PCL-PEG and PLA-PEG aggregation as a computational model for prediction of the drug-loading efficacy of doxorubicin. J Biomol Struct Dyn 2019; 37:4215-4221. [PMID: 30628852 DOI: 10.1080/07391102.2018.1541762] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Formulating a hydrophobic drug that is water-soluble is a pharmaceutical challenge. One way is to incorporate the drug in an amphiphilic micelle composed from an aggregation of block copolymers. Design of a good nano-micelle requires many trial-and-error attempts. In this article, we developed a computational model based on a coarse-grained molecular dynamic (MD) simulation and correlated outputs with previous studies. A good correlation shows that this model reliably simulates poly-lactic acid-poly-ethylene glycol (PLA-PEG) and poly-caprolactone (PCL)-PEG aggregation in water with and without the presence of doxorubicin. Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
| | - Farzin Hadizadeh
- Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences , Mashhad , Iran.,Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences , Mashhad , Iran
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175
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Hou Y, Wang H, Zhang F, Sun F, Xin M, Li M, Li J, Wu X. Novel self-nanomicellizing solid dispersion based on rebaudioside A: a potential nanoplatform for oral delivery of curcumin. Int J Nanomedicine 2019; 14:557-571. [PMID: 30666114 PMCID: PMC6333391 DOI: 10.2147/ijn.s191337] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Purpose Rebaudioside A (RA) has nanocarrier characteristics that allow it to self-assemble into micelles in aqueous solutions. The purpose of this study was to determine if a self-nanomicellizing solid dispersion based on RA could be utilized as an oral nano-drug delivery system. Materials and methods Curcumin (Cur) served as a model hydrophobic drug, and a Cur-loaded self-nanomicellizing solid dispersion based on RA (RA-Cur) was formulated. The properties of RA-Cur in the solid state and in aqueous solution were characterized. The antioxidant activity and mechanism of RA-Cur endocytosis were also investigated. The pharmacokinetics, biodistribution in the intestinal tract, and anti-inflammation properties were also evaluated in vivo. Results RA-Cur could be easily fabricated, and it self-assembled into ultrasmall micelles (particle size ~4 nm) in a homogeneous distribution state (polydispersity index <0.2) when dissolved in water. Cur was readily encapsulated into RA micelles and this improved its water solubility (to 14.34±1.66 mg/mL), as well as its in vitro release and membrane permeability. The antioxidant activities of Cur in RA-Cur were also significantly improved. Biodistribution in the intestinal tract confirmed a significant enhancement of Cur absorption in the duodenum, jejunum, and ileum by encapsulation in RA-Cur, and the absorption of RA-Cur was governed by mixed transcytosis mechanisms. Pharmacokinetic tests of RA-Cur in rats revealed a dramatic 19.06-fold enhancement of oral bioavailability when compared to free Cur. More importantly, oral administration of RA-Cur could efficiently ameliorate ulcerative colitis in a mouse model induced by dextran sodium sulfate. Conclusion Self-nanomicellizing solid dispersions based on RA have great potential as novel oral nano-drug delivery systems for hydrophobic drugs such as Cur.
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Affiliation(s)
- Yuzhen Hou
- Department of Pharmacy, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China,
| | - Hui Wang
- Department of Pharmacy, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China,
| | - Fan Zhang
- Department of Pharmacy, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China,
| | - Fengyuan Sun
- Department of Pharmacy, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China,
| | - Meng Xin
- Department of Pharmacy, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China, .,Department of Ophthalmology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai 264100, China
| | - Mengshuang Li
- Department of Pharmacy, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China, .,Pharmacy Intravenous Admixture Services, Qingdao Women and Children's Hospital, Qingdao 266034, China
| | - Jun Li
- Qingdao Eye Hospital, Shandong Eye Institute, Shandong Academy of Medical Sciences, Qingdao 266071, China
| | - Xianggen Wu
- Department of Pharmacy, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China,
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176
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Hou L, Zhang Y, Yang X, Tian C, Yan Y, Zhang H, Shi J, Zhang H, Zhang Z. Intracellular NO-Generator Based on Enzyme Trigger for Localized Tumor-Cytoplasm Rapid Drug Release and Synergetic Cancer Therapy. ACS Appl Mater Interfaces 2019; 11:255-268. [PMID: 30561993 DOI: 10.1021/acsami.8b17750] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Nitric oxide (NO) is an important biological messenger implicated in tumor therapy. However, current NO release systems suffer from some disadvantages, such as hydrolysis during blood circulation, poor specificity, and robust irradiation for stimuli. Accordingly, we constructed an intracellular enzyme-triggered NO-generator to achieve tumor cytoplasm-specific disruption and localized rapid drug release. Diethylamine NONOate (DEA/NO) was used as a NO donor and conjugated with hyaluronic acid (HA) to form self-assembly micelle (HA-DNB-DEA/NO), and encapsulate chemotherapeutic agent (doxorubicin (DOX)) into its hydrophobic core (DOX@HA-DNB-DEA/NO). After HA receptor mediated internalization into tumor cells, HA shell would undergo digestion into small conjugated pieces by hyaluronidase. Meanwhile, DOX@HA-DNB-DEA/NO also responded to the intratumoral overexpressed glutathion and glutathione S-transferase π, leading to the intracellular NO production and controlled DOX rapid release. In vitro and in vivo results proved the enzyme-dependent and enhanced targeting delivery profile, and demonstrated that NO and DOX could colocate in specific tumor site, which provided a precondition for exerting their synergistic efficacy. Moreover, expression of p53 protein was upregulated in tumor tissue after treatment, indicating that NO induced cell apoptosis mediated by tumor suppressor gene p53. Overall, this intelligent drug loaded NO-generator might perform as an enhancer to realize better clinical outcomes.
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Affiliation(s)
- Lin Hou
- School of Pharmaceutical Sciences , Zhengzhou University , Zhengzhou , China
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases , Henan Province , Zhengzhou , China
- Collaborative Innovation Center of New Drug Research and Safety Evaluation , Henan Province , Zhengzhou , China
| | - Yinling Zhang
- School of Pharmaceutical Sciences , Zhengzhou University , Zhengzhou , China
- Modern Analysis and Computer Center of Zhengzhou University , Henan Province , Zhengzhou , China
| | - Xuemei Yang
- School of Pharmaceutical Sciences , Zhengzhou University , Zhengzhou , China
- Modern Analysis and Computer Center of Zhengzhou University , Henan Province , Zhengzhou , China
| | - Chunyu Tian
- School of Pharmaceutical Sciences , Zhengzhou University , Zhengzhou , China
- Modern Analysis and Computer Center of Zhengzhou University , Henan Province , Zhengzhou , China
| | - Yingshan Yan
- School of Pharmaceutical Sciences , Zhengzhou University , Zhengzhou , China
- Modern Analysis and Computer Center of Zhengzhou University , Henan Province , Zhengzhou , China
| | - Hongling Zhang
- School of Pharmaceutical Sciences , Zhengzhou University , Zhengzhou , China
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases , Henan Province , Zhengzhou , China
- Collaborative Innovation Center of New Drug Research and Safety Evaluation , Henan Province , Zhengzhou , China
| | - Jinjin Shi
- School of Pharmaceutical Sciences , Zhengzhou University , Zhengzhou , China
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases , Henan Province , Zhengzhou , China
- Collaborative Innovation Center of New Drug Research and Safety Evaluation , Henan Province , Zhengzhou , China
| | - Huijuan Zhang
- School of Pharmaceutical Sciences , Zhengzhou University , Zhengzhou , China
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases , Henan Province , Zhengzhou , China
- Collaborative Innovation Center of New Drug Research and Safety Evaluation , Henan Province , Zhengzhou , China
| | - Zhenzhong Zhang
- School of Pharmaceutical Sciences , Zhengzhou University , Zhengzhou , China
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases , Henan Province , Zhengzhou , China
- Collaborative Innovation Center of New Drug Research and Safety Evaluation , Henan Province , Zhengzhou , China
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177
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Jang JD, Do C, Bang J, Han YS, Kim TH. Self-Assembly of Temperature Sensitive Unilamellar Vesicles by a Blend of Block Copolymers in Aqueous Solution. Polymers (Basel) 2019; 11:E63. [PMID: 30960047 PMCID: PMC6402003 DOI: 10.3390/polym11010063] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 12/07/2018] [Accepted: 12/27/2018] [Indexed: 12/13/2022] Open
Abstract
A self-assembled unilamellar vesicle, which can be used as a drug delivery system, was easily and simply fabricated using a blended system of Pluronic block copolymers. Controlling the hydrophilic mass fraction of block copolymers (by blending the block copolymer with a different hydrophilic mass fraction) and temperature (i.e., the hydrophobic interaction is controlled), a vesicular structure was formed. Small angle neutron scattering measurements showed that the vesicular structure had diameters of empty cores from 13.6 nm to 79.6 nm, and thicknesses of the bilayers from 2.2 nm to 8.7 nm when the hydrophobic interaction was changed. Therefore, considering that the temperature of the vesicle formation is controllable by the concentration of the blended block copolymers, it is possible for them to be applied in a wide range of potential applications, for example, as nanoreactors and nanovehicles.
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Affiliation(s)
- Jong Dae Jang
- Neutron Science Research Center, Korea Atomic Energy Research Institute, 1045 Daedeok-daero, Yuseong-gu, Daejeon 34057, Korea.
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Sungbuk-gu, Seoul 02841, Korea.
| | - Changwoo Do
- Biology and Soft Matter Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.
| | - Joona Bang
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Sungbuk-gu, Seoul 02841, Korea.
| | - Young Soo Han
- Neutron Science Research Center, Korea Atomic Energy Research Institute, 1045 Daedeok-daero, Yuseong-gu, Daejeon 34057, Korea.
| | - Tae-Hwan Kim
- Neutron Science Research Center, Korea Atomic Energy Research Institute, 1045 Daedeok-daero, Yuseong-gu, Daejeon 34057, Korea.
- Department of Quantum System Engineering, Chonbuk National University, 567 Baekjei-daero, Deokjin-gu, Jeonju 54896, Korea.
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178
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Alfhili MA, Yoon DS, Faten TA, Francis JA, Cha DS, Zhang B, Pan X, Lee MH. Non-Ionic Surfactants Antagonize Toxicity of Potential Phenolic Endocrine-Disrupting Chemicals, Including Triclosan in Caenorhabditis elegans. Mol Cells 2018; 41:1052-1060. [PMID: 30453732 PMCID: PMC6315314 DOI: 10.14348/molcells.2018.0378] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 10/11/2018] [Indexed: 12/28/2022] Open
Abstract
Triclosan (TCS) is a phenolic antimicrobial chemical used in consumer products and medical devices. Evidence from in vitro and in vivo animal studies has linked TCS to numerous health problems, including allergic, cardiovascular, and neurodegenerative disease. Using Caenorhabditis elegans as a model system, we here show that short-term TCS treatment (LC50: ~0.2 mM) significantly induced mortality in a dose-dependent manner. Notably, TCS-induced mortality was dramatically suppressed by co-treatment with non-ionic surfactants (NISs: e.g., Tween 20, Tween 80, NP-40, and Triton X-100), but not with anionic surfactants (e.g., sodium dodecyl sulfate). To identify the range of compounds susceptible to NIS inhibition, other structurally related chemical compounds were also examined. Of the compounds tested, only the toxicity of phenolic compounds (bisphenol A and benzyl 4-hydroxybenzoic acid) was significantly abrogated by NISs. Mechanistic analyses using TCS revealed that NISs appear to interfere with TCS-mediated mortality by micellar solubilization. Once internalized, the TCS-micelle complex is inefficiently exported in worms lacking PMP-3 (encoding an ATP-binding cassette (ABC) transporter) transmembrane protein, resulting in overt toxicity. Since many EDCs and surfactants are extensively used in commercial products, findings from this study provide valuable insights to devise safer pharmaceutical and nutritional preparations.
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Affiliation(s)
- Mohammad A. Alfhili
- Department of Medicine (Hematology/Oncology Division), Brody School of Medicine at East Carolina University, Greenville, NC 27834,
USA
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, Riyadh 11433,
Saudi Arabia
| | - Dong Suk Yoon
- Department of Medicine (Hematology/Oncology Division), Brody School of Medicine at East Carolina University, Greenville, NC 27834,
USA
| | - Taki A. Faten
- Department of Biology, East Carolina University, Greenville, NC 27858,
USA
| | - Jocelyn A. Francis
- Department of Chemistry, East Carolina University, Greenville, NC 27858,
USA
| | - Dong Seok Cha
- Department of Oriental Pharmacy, College of Pharmacy, Woosuk University, Jeonbuk 565-701,
Korea
| | - Baohong Zhang
- Department of Biology, East Carolina University, Greenville, NC 27858,
USA
| | - Xiaoping Pan
- Department of Biology, East Carolina University, Greenville, NC 27858,
USA
| | - Myon-Hee Lee
- Department of Medicine (Hematology/Oncology Division), Brody School of Medicine at East Carolina University, Greenville, NC 27834,
USA
- Lineberger Comprehensive Cancer Center, University of North Carolina-Chapel Hill, Chapel Hill, NC 27599,
USA
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179
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Khan N, Brettmann B. Intermolecular Interactions in Polyelectrolyte and Surfactant Complexes in Solution. Polymers (Basel) 2018; 11:E51. [PMID: 30960035 PMCID: PMC6401804 DOI: 10.3390/polym11010051] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 12/20/2018] [Accepted: 12/28/2018] [Indexed: 12/20/2022] Open
Abstract
Polyelectrolytes are an important class of polymeric materials and are increasingly used in complex industrial formulations. A core use of these materials is in mixtures with surfactants, where a combination of hydrophobic and electrostatic interactions drives unique solution behavior and structure formation. In this review, we apply a molecular level perspective to the broad literature on polyelectrolyte-surfactant complexes, discussing explicitly the hydrophobic and electrostatic interaction contributions to polyelectrolyte surfactant complexes (PESCs), as well as the interplay between the two molecular interaction types. These interactions are sensitive to a variety of solution conditions, such as pH, ionic strength, mixing procedure, charge density, etc. and these parameters can readily be used to control the concentration at which structures form as well as the type of structure in the bulk solution.
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Affiliation(s)
- Nasreen Khan
- Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.
| | - Blair Brettmann
- Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.
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180
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Shi Y, Li J, Zhang Z, Duan D, Zhang Z, Liu H, Liu T, Liu Z. Tracing Boron with Fluorescence and Positron Emission Tomography Imaging of Boronated Porphyrin Nanocomplex for Imaging-Guided Boron Neutron Capture Therapy. ACS Appl Mater Interfaces 2018; 10:43387-43395. [PMID: 30451482 DOI: 10.1021/acsami.8b14682] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Boron neutron capture therapy (BNCT) induces high-energy radiation within cancer cells while avoiding damage to normal cells without uptake of BNCT drugs, which is holding great promise to provide excellent control over locally invasive malignant tumors. However, lack of quantitative imaging technique to determine local boron concentration has been a great challenge for nuclear physicians to apply accurate neutron irradiation during the treatment, which is a key factor that has limited BNCT's application in clinics. To meet this challenge, this study describes coating boronated porphyrins with a biocompatible poly(lactide- co-glycolide)-monomethoxy-poly(polyethylene-glycol) (PLGA-mPEG) micelle for selective tumor accumulation and reduced toxicity comparing with the previously reported boronated porphyrin drugs. Fluorescence imaging and positron emission tomography (PET) imaging were performed, unveiling the potential imaging properties of this boronated porphyrin nanocomplex (BPN) to locate tumor region and to determine tissue-localized boron concentration which facilitates treatment planning. By studying the pharmacokinetics of BPN with Cu-64 PET imaging, the treatment plan was adjusted from single bolus injection to multiple times of injections of smaller doses. As expected, high tumor uptake of boron (125.17 ± 13.54 ppm) was achieved with an extraordinarily high tumor to normal tissue ratio: tumors to liver, muscle, fat, and blood were 3.24 ± 0.22, 61.46 ± 20.26, 31.55 ± 10.30, and 33.85 ± 5.73, respectively. At last, neutron irradiation with BPN showed almost complete tumor suppression, demonstrating that BPN holds a great potential for being an efficient boron delivery agent for imaging-guided BNCT.
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Affiliation(s)
- Yaxin Shi
- Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China
| | - Jiyuan Li
- Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China
| | - Zizhu Zhang
- Beijing Capture Tech Co., Ltd. , Beijing 102413 , China
| | - Dongban Duan
- Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China
| | - Zhengchu Zhang
- Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China
| | - Hui Liu
- Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China
| | - Tong Liu
- Beijing Capture Tech Co., Ltd. , Beijing 102413 , China
| | - Zhibo Liu
- Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China
- Peking University-Tsinghua University Center for Life Sciences , Beijing 100871 , China
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181
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Matsuo S, Higashi K, Moribe K, Kimura SI, Itai S, Kondo H, Iwao Y. Combination of Roll Grinding and High-Pressure Homogenization Can Prepare Stable Bicelles for Drug Delivery. Nanomaterials (Basel) 2018; 8:E998. [PMID: 30513913 DOI: 10.3390/nano8120998] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 11/21/2018] [Accepted: 11/30/2018] [Indexed: 12/14/2022]
Abstract
To improve the solubility of the drug nifedipine (NI), NI-encapsulated lipid-based nanoparticles (NI-LNs) have been prepared from neutral hydrogenated soybean phosphatidylcholine and negatively charged dipalmitoylphosphatidylglycerol at a molar ratio of 5/1 using by roll grinding and high-pressure homogenization. The NI-LNs exhibited high entrapment efficiency, long-term stability, and enhanced NI bioavailability. To better understand their structures, cryo transmission electron microscopy and atomic force microscopy were performed in the present study. Imaging from both instruments revealed that the NI-LNs were bicelles. Structures prepared with a different drug (phenytoin) or with phospholipids (dimyristoylphosphatidylcholine, dipalmitoylphosphatidylcholine, and distearoylphosphatidylcholine) were also bicelles. Long-term storage, freeze-drying, and high-pressure homogenization did not affect the structures; however, different lipid ratios, or the presence of cholesterol, did result in liposomes (5/0) or micelles (0/5) with different physicochemical properties and stabilities. Considering the result of long-term stability, standard NI-LN bicelles (5/1) showed the most long-term stabilities, providing a useful preparation method for stable bicelles for drug delivery.
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182
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Luo Z, Jiang L, Ding C, Hu B, Loh XJ, Li Z, Wu Y. Surfactant Free Delivery of Docetaxel by Poly[(R)-3-hydroxybutyrate-(R)-3-hydroxyhexanoate]-Based Polymeric Micelles for Effective Melanoma Treatments. Adv Healthc Mater 2018; 7:e1801221. [PMID: 30398017 DOI: 10.1002/adhm.201801221] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 10/23/2018] [Indexed: 12/13/2022]
Abstract
Docetaxel (DTX) is a new semisynthetic chemical in the taxoid family and serves a wide spectrum of chemotherapeutics. Current commercial formulation of DTX is based on the addition of the nonionic surfactants (i.e., ethanol and Tween 80), which are reported to cause severe hemolysis, hypersensitivity reactions, or neurotoxic toxicity and greatly hinders patient tolerance or compliance. In this report, a novel low-toxic, biodegradable, and amphiphilic poly[(R)-3-hydroxybutyrate-(R)-3-hydroxyhexanoate] (PHBHx)-based polyurethane (a copolymer made of hydrophobic PHBHx with biocompatible D-3-hydroxybutyric acid as degradation product, thermosensitive polypropylene glycol (PPG), and hydrophilic polyethylene glycol (PEG) segments) with nanosized micelle formation ability to encapsulate DTX, as a surfactant free formulation, is reported. Interestingly, this DTX-loaded poly(PHBHx/PEG/PPG urethane) micelle formulation with >90% drug loading efficiency shows significantly improved DTX solubility in aqueous medium, reduced hemolysis for better blood compatibility, and increased drug uptake in A375 melanoma cells, which provides the possibility of systematic delivery of DTX. As a proof-of-concept, an A375 melanoma xenograft mouse model is established to verify the therapeutic effect of this DTX-loaded poly(PHBHx/PEG/PPG urethane) micelle formulation, indicating the promising application of PHBHx-based polymeric nanosized micelle as a surfactant free formulation of chemotherapeutics which might greatly be beneficial for controllable delivery of pharmaceutics and cancer therapy.
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Affiliation(s)
- Zheng Luo
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress BiologySchool of Pharmaceutical SciencesXiamen University Xiamen 361102 P. R. China
| | - Lu Jiang
- Institute of Materials Research and EngineeringA*STAR (Agency for Science, Technology and Research) 2 Fusionopolis Way, Innovis, #08‐03 Singapore 138634 Singapore
| | - Chizhu Ding
- College of ScienceHuazhong Agricultural University Wuhan 430074 P. R. China
| | - Benhui Hu
- School of Biomedical Engineering and InformaticsNanjing Medical University Nanjing 211166 P. R. China
| | - Xian Jun Loh
- Institute of Materials Research and EngineeringA*STAR (Agency for Science, Technology and Research) 2 Fusionopolis Way, Innovis, #08‐03 Singapore 138634 Singapore
| | - Zibiao Li
- Institute of Materials Research and EngineeringA*STAR (Agency for Science, Technology and Research) 2 Fusionopolis Way, Innovis, #08‐03 Singapore 138634 Singapore
| | - Yun‐Long Wu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress BiologySchool of Pharmaceutical SciencesXiamen University Xiamen 361102 P. R. China
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183
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Abstract
The surface and interfacial properties of casein-hydrolyzed peptides were evaluated using measurement of surface and interfacial tensions, surface viscosity, dynamic light scattering (DLS), and freeze-fracture transmission electron microscopy (FF-TEM). In this study, high internal oil phase emulsion (HIPE) gels were successfully prepared, using the surface and interfacial properties of casein peptides. The casein peptides exhibited surface and interfacial activities. The estimated critical micelle concentration (CMC) and γCMC values were 3.0 mg/mL and 47.8 mN/m, and the average size of casein peptide micelles was 13.2 ± 1.7 nm. The surface shear viscosity of an aqueous casein peptide solution at 10 mg/mL was 1603 µPa ms, which is fifteen times larger than that of sodium dodecyl sulfate (SDS, 106 µPa ms). The larger surface viscosity of casein peptide adsorbed layer could stabilize emulsions and prevent flocculation and coalescence. High internal oil phase gel emulsions were then prepared by slowly adding oil and polyisobutene into an aqueous casein peptide solution/glycerol mixture with different compositions. Based on the pseudo ternary 15 wt% aqueous casein peptide solution/polyisobutene/glycerol phase diagram, the HIPE containing the maximum 88.1 wt% (91.5 vol%) of oil is obtained by the addition of 0.36 wt% of casein peptides. The use of only a small amount of protein-hydrolyzed peptides instead of the commonly used synthetic surfactants for HIPE preparation has great advantages for the widespread application of HIPE technology.
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Affiliation(s)
- Kazuaki Wakita
- Oleo & Speciality Chemicals Research LAB., NOF Corporation
| | - Tomohiro Imura
- Research Institute for Innovation in Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST)
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184
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Zhang S, Zhao Y. Tuning surface-cross-linking of molecularly imprinted cross-linked micelles for molecular recognition in water. J Mol Recognit 2018; 32:e2769. [PMID: 30419606 DOI: 10.1002/jmr.2769] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 10/09/2018] [Accepted: 10/15/2018] [Indexed: 12/12/2022]
Abstract
Molecular recognition in water is an important challenge in supramolecular chemistry. Surface-core double cross-linking of template-containing surfactant micelles by the click reaction and free radical polymerization yields molecularly imprinted nanoparticles (MINPs) with guest-complementary binding sites. An important property of MINP-based receptors is the surface-cross-linking between the propargyl groups of the surfactants and a diazide cross-linker. Decreasing the number of carbons in between the two azides enhanced the binding affinity of the MINPs, possibly by keeping the imprinted binding site more open prior to the guest binding. The depth of the binding pocket can be controlled by the distribution of the hydrophilic/hydrophobic groups of the template and was found to influence the binding in addition to electrostatic interactions between oppositely charged MINPs and guests. Cross-linkers with an alkoxyamine group enabled two-stage double surface-cross-linking that strengthened the binding constants by an order of magnitude, possibly by expanding the binding pocket of the MINP into the polar region. The binding selectivity among very similar isomeric structures also improved.
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Affiliation(s)
- Shize Zhang
- Department of Chemistry, Iowa State University, Ames, IA, USA
| | - Yan Zhao
- Department of Chemistry, Iowa State University, Ames, IA, USA
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185
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Zhou Y, Li N, Qiu Z, Lu X, Fang M, Chen X, Ren L, Wang G, Ouyang P. Superior anti-neoplastic activities of triacontanol-PEG conjugate: synthesis, characterization and biological evaluations. Drug Deliv 2018; 25:1546-1559. [PMID: 30022695 PMCID: PMC6060375 DOI: 10.1080/10717544.2018.1477864] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 05/11/2018] [Accepted: 05/14/2018] [Indexed: 01/09/2023] Open
Abstract
Triacontanol (TA, C30H62O), abundantly present in plant cuticle waxes and bee waxes, has been found to display promising anti-neoplastic potentials. As a long chain fatty alcohol, TA possesses limited aqueous solubility, which hinders its medicinal application. To overcome its solubility barrier, a polymer prodrug was synthesized through attaching TA to poly ethylene glycol (PEG), using succinic acid as a linker with bifunctional amide and ester bonds. Anti-neoplastic effects of PEG-TA were assessed in LoVo and MCF7 cells, anti-proliferative and apoptosis-inducing activities were subsequently confirmed in mouse xenograft model. Encouragingly, PEG-TA possessed selective anti-cancer ability. It did not exhibit significant cytotoxicity on normal cells. Mechanistic examination revealed inhibition of NF-κB nuclear translocation, suppression on matrix degradation enzyme and down-regulation of angiogenic signaling might contribute to its anti-malignant effects. Pharmacokinetics clearly indicated PEGylated TA (named as mPEG2K-SA-TA) substantially enhanced TA delivery with increased plasma exposure (19,791 vs. 336.25 ng·mL-1·h-1, p < .001), mean residence time (8.46 vs. 2.95 h, p < .001) and elimination half-life (7.78 vs. 2.57 h, p < .001) compared to those of original TA. Moreover, mPEG2K-SA-TA appeared to be safe in preliminary toxicological assessment. PEGylated TA also emerged as a functional carrier to deliver hydrophobic chemotherapeutic agents, since it readily self-assembled to micelles in aqueous solution with a low critical micelle concentration (CMC, 19.1 µg·mL-1). Conclusively, PEG-TA conjugate displayed superior anti-neoplastic activities and low toxicity, as well as facilitated the delivery of other hydrophobic agents, which appeared to be an innovative strategy for cancer therapy.
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Affiliation(s)
- Yimeng Zhou
- China Pharmaceutical University, Nanjing, China
| | - Ning Li
- China Pharmaceutical University, Nanjing, China
- Nanjing Tech University, Nanjing, China
| | - Zhixia Qiu
- China Pharmaceutical University, Nanjing, China
| | - Xiaoyu Lu
- China Pharmaceutical University, Nanjing, China
| | - Min Fang
- China Pharmaceutical University, Nanjing, China
| | - Xijing Chen
- China Pharmaceutical University, Nanjing, China
| | - Lili Ren
- Nanjing Tech University, Nanjing, China
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186
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Vhora I, Lalani R, Bhatt P, Patil S, Patel H, Patel V, Misra A. Colloidally Stable Small Unilamellar Stearyl Amine Lipoplexes for Effective BMP-9 Gene Delivery to Stem Cells for Osteogenic Differentiation. AAPS PharmSciTech 2018; 19:3550-3560. [PMID: 30187446 DOI: 10.1208/s12249-018-1161-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 08/22/2018] [Indexed: 11/30/2022] Open
Abstract
The biocompatibility of cationic liposomes has led to their clinical translation in gene delivery and their application apart from cancer to cardiovascular diseases, osteoporosis, metabolic diseases, and more. We have prepared PEGylated stearyl amine (pegSA) lipoplexes meticulously considering the physicochemical properties and formulation parameters to prepare single unilamellar vesicles (SUV) of < 100 nm size which retain their SUV nature upon complexation with pDNA rather than the conventional lipoplexes which show multilamellar nature. The developed PEGylated SA lipoplexes (pegSA lipoplexes) showed a lower N/P ratio (1.5) for BMP-9 gene complexation while maintaining the SUV character with a unique shape (square and triangular lipoplexes). Colloidal and pDNA complexation stability in the presence of electrolytes and serum indicates the suitability for intravenous administration for delivery of lipoplexes to bone marrow mesenchymal stem cells through sinusoidal vessels in bone marrow. Moreover, lower charge density of lipoplexes and low oxidative stress led to lower toxicity of lipoplexes to the C2C12 cells, NIH 3T3 cells, and erythrocytes. Transfection studies showed efficient gene delivery to C2C12 cells inducing osteogenic differentiation through BMP-9 expression as shown by enhanced calcium deposition in vitro, proving the potential of lipoplexes for bone regeneration. In vivo acute toxicity studies further demonstrated safety of the developed lipoplexes. Developed pegSA lipoplexes show potential for further in vivo preclinical evaluation to establish the proof of concept.
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187
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Guo W, Deng L, Yu J, Chen Z, Woo Y, Liu H, Li T, Lin T, Chen H, Zhao M, Zhang L, Li G, Hu Y. Sericin nano micelles with enhanced cellular uptake and pH-triggered release of doxorubicin reverse cancer drug resistance. Drug Deliv 2018; 25:1103-1116. [PMID: 29742945 PMCID: PMC6058513 DOI: 10.1080/10717544.2018.1469686] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2018] [Revised: 04/23/2018] [Accepted: 04/23/2018] [Indexed: 02/06/2023] Open
Abstract
Drug resistance is the major challenge facing cancer chemotherapy and nanoscale delivery systems based on natural materials, such as sericin, are a promising means of overcoming drug resistance. Yet, no attempt of introducing synthetic poly(γ-benzyl-L-glutamate) (PBLG) onto sericin polypeptide to fabricate a facile biocompatible and biodegradable micelle has been tried. Here, we prepared a polypeptide-based amphiphilic polymer containing hydrophilic sericin polypeptide backbone and PBLG side chains via ring-opening polymerization (ROP) strategy. The introduction of PBLG side chains remarkably enhances the stability of sericin micelles in water. Meanwhile, the micelles exhibited a high loading capacity and pH-responsive release ability for antitumor drug doxorubicin (DOX), called sericin-PBLG-DOX. Owing to the excellent cell membrane penetration of sericin-PBLG, the cellular uptake of DOX when loaded into micelles was improved. Subsequently, sericin-PBLG-DOX was transferred into perinuclear lysosomes, where the release rate of DOX was accelerated. Compared to the same dose of DOX, sericin-PBLG-DOX could induce a more efficient anti-tumor effect both in vitro and in vivo, and these micelles have promise for future clinical applications in overcoming cancer drug resistance with good biosafety, enhanced cellular uptake, pH-triggered drug release, efficient anti-tumor effects, and minimized systemic toxicity.
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Affiliation(s)
- Weihong Guo
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - Lizhi Deng
- PCFM Lab and GDHPPC Laboratory, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, PR China
| | - Jiang Yu
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - Zhaoyu Chen
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - Yanghee Woo
- Department of Surgery, City of Hope National Medical Center, Duarte, CA, USA
| | - Hao Liu
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - Tuanjie Li
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - Tian Lin
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - Hao Chen
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - Mingli Zhao
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - Liming Zhang
- PCFM Lab and GDHPPC Laboratory, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, PR China
| | - Guoxin Li
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - Yanfeng Hu
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
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188
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Zhang R, Wu F, Wu L, Tian Y, Zhou B, Zhang X, Huang R, Yu C, He G, Yang L. Novel Self-Assembled Micelles Based on Cholesterol-Modified Antimicrobial Peptide (DP7) for Safe and Effective Systemic Administration in Animal Models of Bacterial Infection. Antimicrob Agents Chemother 2018; 62:e00368-18. [PMID: 30201818 DOI: 10.1128/AAC.00368-18] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 08/27/2018] [Indexed: 02/05/2023] Open
Abstract
Owing to their broad-spectrum antibacterial properties, multitarget effects, and low drug resistance, antimicrobial peptides (AMPs) have played critical roles in the clinical therapy of drug-resistant bacterial infections. However, the potential hazard of hemolysis following systemic administration has greatly limited their application. Here, we developed a novel AMP derivative, DP7-C, by modifying a formerly identified highly active AMP (DP7) with cholesterol to form an amphiphilic conjugate. The prepared DP7-C easily self-assembled into stable nanomicelles in aqueous solution. The DP7-C micelles showed lower hemolytic activity than their unconjugated counterparts toward human red blood cells and a maximum tolerated dose of 80 mg/kg of body weight in mice via intravenous injection, thus demonstrating improved safety. Moreover, by eliciting specific immunomodulatory activities in immune cells, the DP7-C micelles exerted distinct therapeutic effects in zebrafish and mouse models of infection. In conclusion, DP7-C micelles may be an excellent candidate for the treatment of bacterial infections in the clinic.
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189
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Oliver RC, Naing SH, Weiss KL, Pingali SV, Lieberman RL, Urban VS. Contrast-Matching Detergent in Small-Angle Neutron Scattering Experiments for Membrane Protein Structural Analysis and Ab Initio Modeling. J Vis Exp 2018:57901. [PMID: 30394373 PMCID: PMC6235576 DOI: 10.3791/57901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
The biological small-angle neutron scattering instrument at the High-Flux Isotope Reactor of Oak Ridge National Laboratory is dedicated to the investigation of biological materials, biofuel processing, and bio-inspired materials covering nanometer to micrometer length scales. The methods presented here for investigating physical properties (i.e., size and shape) of membrane proteins (here, MmIAP, an intramembrane aspartyl protease from Methanoculleus marisnigri) in solutions of micelle-forming detergents are well-suited for this small-angle neutron scattering instrument, among others. Other biophysical characterization techniques are hindered by their inability to address the detergent contributions in a protein-detergent complex structure. Additionally, access to the Bio-Deuteration Lab provides unique capabilities for preparing large-scale cultivations and expressing deuterium-labeled proteins for enhanced scattering signal from the protein. While this technique does not provide structural details at high-resolution, the structural knowledge gap for membrane proteins contains many addressable areas of research without requiring near-atomic resolution. For example, these areas include determination of oligomeric states, complex formation, conformational changes during perturbation, and folding/unfolding events. These investigations can be readily accomplished through applications of this method.
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Affiliation(s)
- Ryan C Oliver
- Neutron Scattering Division, Oak Ridge National Laboratory
| | - Swe-Htet Naing
- School of Chemistry and Biochemistry, Georgia Institute of Technology
| | - Kevin L Weiss
- Neutron Scattering Division, Oak Ridge National Laboratory
| | | | | | - Volker S Urban
- Neutron Scattering Division, Oak Ridge National Laboratory;
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190
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Mao H, Xie Y, Ju H, Mao H, Zhao L, Wang Z, Hua L, Zhao C, Li Y, Yu R, Liu H. Design of Tumor Microenvironment-Responsive Drug-Drug Micelle for Cancer Radiochemotherapy. ACS Appl Mater Interfaces 2018; 10:33923-33935. [PMID: 30205681 DOI: 10.1021/acsami.8b11159] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Concomitant radiochemotherapy is a major therapeutic strategy for treating malignant tumors. However, the greatest challenge is how to improve the therapeutic effect of radiochemotherapy to achieve the proper synergetic chemo-/radiotherapy for the tumor. In this study, ferrocenium (antitumor effect) and nitroimidazole (hypoxic cell radiosensitization) conjugates were synthesized to form amphiphilic ferrocenium-hexane-nitroimidazole (Fe-NI), which can self-assemble in aqueous solution. The Fe-NI micelles successfully encapsulate the hydrophobic chemotherapy drug doxorubicin (DOX) and are modified with hyaluronic acid (HA) by electrostatic interactions to form HA-Fe-NIs-DOX micelles. HA-Fe-NIs-DOX micelles rapidly release DOX under tumor hypoxia and a high glutathione (GSH) environment and achieve a synergetic chemo-/radiotherapy for the tumor based on the properties of nitroimidazoles and ferrocenes. The biodistribution results obtained in vivo reveal an effective accumulation in the tumor. The HA-Fe-NIs-DOX micelles show a significant radiosensitizing effect on the tumors, and the combination of chemotherapy and radiotherapy is realized for the treatment of tumor in vitro and in vivo. These findings illustrate that HA-Fe-NIs micelles are a promising candidate, which enhances the antitumor effects as a DOX delivery system, owing to the synergistic mechanisms of antitumor agents and chemo-/radiotherapy.
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Affiliation(s)
| | - Yandong Xie
- Brain Hospital , Affiliated Hospital of Xuzhou Medical University , Xuzhou 221002 , P. R. China
| | | | - Hongsen Mao
- The People's Hospital of Jiawang District of Xuzhou , Affiliated Hospital of Xuzhou Medical University Jiawang Branch of Xuzhou , Xuzhou 221000 , P. R. China
| | | | | | - Lei Hua
- Brain Hospital , Affiliated Hospital of Xuzhou Medical University , Xuzhou 221002 , P. R. China
| | | | - Yuling Li
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science , Jiangsu Normal University , Xuzhou 221002 , P. R. China
| | - Rutong Yu
- Brain Hospital , Affiliated Hospital of Xuzhou Medical University , Xuzhou 221002 , P. R. China
| | - Hongmei Liu
- Brain Hospital , Affiliated Hospital of Xuzhou Medical University , Xuzhou 221002 , P. R. China
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191
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Sato T, Konno J, Sekiguchi A, Yoneki N, Kawano K, Hayashi T, Ogawa Y, Kikitsu A, Aijima T, Hara K, Hara S, Hayashi H, Fuchigami K, Igo N, Takashima Y, Kobayashi Y, Mori M, Yamamoto K, Niwa M, Saiga K, Ichimura E. Long-lasting immunosuppressive effects of tacrolimus-loaded micelle NK61060 in preclinical arthritis and colitis models. Ther Deliv 2018; 9:711-29. [PMID: 30277135 DOI: 10.4155/tde-2018-0044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
AIM Tacrolimus (TAC) is an important drug for inflammatory diseases. However, TAC has several limitations, such as variable trough concentrations among individuals and a high medication frequency. In this study, we created NK61060, a novel micellar TAC formulation, to circumvent these disadvantages. MATERIALS & METHODS Immunosuppressive activity of NK61060 was determined in the collagen-induced arthritis rat model, mannan-induced arthritis mouse model and dextran sodium sulfate-induced colitis mouse model. The pharmacokinetics and toxicology of NK61060 were evaluated in those models. RESULTS In arthritis and colitis models, NK61060 exhibited superior immunosuppressive activity compared with that of TAC. Pharmacokinetic and toxicological analyses indicated that NK61060 had a wider safety margin and could be administered at a reduced medication frequency. CONCLUSION NK61060 mitigates the trough concentration variability and the medication frequency and it may be a safer and more effective option for use in clinical settings. Further studies are needed to determine its clinical usefulness.
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192
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Liu K, Ye L, Wang Y, Du G, Jiang L. A Pseudopeptide Polymer Micelle Used for Asymmetric Catalysis of the Aldol Reaction in Water. Polymers (Basel) 2018; 10:E1004. [PMID: 30960929 PMCID: PMC6403597 DOI: 10.3390/polym10091004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Revised: 09/04/2018] [Accepted: 09/05/2018] [Indexed: 11/25/2022] Open
Abstract
Micelles assembled from amphiphilic molecules have proved to be ideal scaffolds to construct artificial catalysts mimicking enzymatic catalytic behavior. In this paper, we describe the synthesis of amphiphilic poly(2-oxazoline) derivatives with l-prolinamide units in the side chain and their application in asymmetric aldol reactions. Upon dissolution in water, the pseudopeptide polymers self-assembled into particles with different sizes, relying on the copolymer composition and distribution of hydrophilic/hydrophobic segments in the polymer chain. A preliminary study has demonstrated that the catalytic activity of these polymeric organocatalysts are strongly dependent on the aggregated architecture. The micelle-type assemblies can act as nanoreactors to efficiently promote the direct aldolisation of cyclohexanone with aromatic aldehydes in aqueous media, affording anti-aldol products in excellent yields (88⁻99%) and higher stereoselectivities (90/10 dr, 86% ee) compared to their nonmicellar systems under identical conditions.
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Affiliation(s)
- Keyuan Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Long Ye
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Yao Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Ganhong Du
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Liming Jiang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
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193
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Jia Z, Wang X, Wei X, Zhao G, Foster KW, Qiu F, Gao Y, Yuan F, Yu F, Thiele GM, Bronich TK, O’Dell JR, Wang D. Micelle-Forming Dexamethasone Prodrug Attenuates Nephritis in Lupus-Prone Mice without Apparent Glucocorticoid Side Effects. ACS Nano 2018; 12:7663-7681. [PMID: 29965725 PMCID: PMC6117746 DOI: 10.1021/acsnano.8b01249] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 07/02/2018] [Indexed: 05/27/2023]
Abstract
Nephritis is one of the major complications of systemic lupus erythematosus. While glucocorticoids (GCs) are frequently used as the first-line treatment for lupus nephritis (LN), long-term GC usage is often complicated by severe adverse effects. To address this challenge, we have developed a polyethylene glycol-based macromolecular prodrug (ZSJ-0228) of dexamethasone, which self-assembles into micelles in aqueous media. When compared to the dose equivalent daily dexamethasone 21-phosphate disodium (Dex) treatment, monthly intravenous administration of ZSJ-0228 for two months significantly improved the survival of lupus-prone NZB/W F1 mice and was much more effective in normalizing proteinuria, with clear histological evidence of nephritis resolution. Different from the dose equivalent daily Dex treatment, monthly ZSJ-0228 administration has no impact on the serum anti-double-stranded DNA (anti-dsDNA) antibody level but can significantly reduce renal immune complex deposition. No significant systemic toxicities of GCs ( e. g., total IgG reduction, adrenal gland atrophy, and osteopenia) were found to be associated with ZSJ-0228 treatment. In vivo imaging and flow cytometry studies revealed that the fluorescent-labeled ZSJ-0228 primarily distributed to the inflamed kidney after systemic administration, with renal myeloid cells and proximal tubular epithelial cells mainly responsible for its kidney retention. Collectively, these data suggest that the ZSJ-0228's potent local anti-inflammatory/immunosuppressive effects and improved safety may be attributed to its nephrotropicity and cellular sequestration at the inflamed kidney tissues. Pending further optimization, it may be developed into an effective and safe therapy for improved clinical management of LN.
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Affiliation(s)
- Zhenshan Jia
- Department
of Pharmaceutical Sciences, College of Pharmacy, Department of Pathology
and Microbiology, College of Medicine, Department of Biostatistics, College
of Public Health, and Division of Rheumatology, Department of Internal
Medicine, College of Medicine, University
of Nebraska Medical Center, Omaha, Nebraska 68198-6125, United States
| | - Xiaobei Wang
- Department
of Pharmaceutical Sciences, College of Pharmacy, Department of Pathology
and Microbiology, College of Medicine, Department of Biostatistics, College
of Public Health, and Division of Rheumatology, Department of Internal
Medicine, College of Medicine, University
of Nebraska Medical Center, Omaha, Nebraska 68198-6125, United States
| | - Xin Wei
- Department
of Pharmaceutical Sciences, College of Pharmacy, Department of Pathology
and Microbiology, College of Medicine, Department of Biostatistics, College
of Public Health, and Division of Rheumatology, Department of Internal
Medicine, College of Medicine, University
of Nebraska Medical Center, Omaha, Nebraska 68198-6125, United States
| | - Gang Zhao
- Department
of Pharmaceutical Sciences, College of Pharmacy, Department of Pathology
and Microbiology, College of Medicine, Department of Biostatistics, College
of Public Health, and Division of Rheumatology, Department of Internal
Medicine, College of Medicine, University
of Nebraska Medical Center, Omaha, Nebraska 68198-6125, United States
| | - Kirk W. Foster
- Department
of Pharmaceutical Sciences, College of Pharmacy, Department of Pathology
and Microbiology, College of Medicine, Department of Biostatistics, College
of Public Health, and Division of Rheumatology, Department of Internal
Medicine, College of Medicine, University
of Nebraska Medical Center, Omaha, Nebraska 68198-6125, United States
| | - Fang Qiu
- Department
of Pharmaceutical Sciences, College of Pharmacy, Department of Pathology
and Microbiology, College of Medicine, Department of Biostatistics, College
of Public Health, and Division of Rheumatology, Department of Internal
Medicine, College of Medicine, University
of Nebraska Medical Center, Omaha, Nebraska 68198-6125, United States
| | - Yangyang Gao
- Department
of Pharmaceutical Sciences, College of Pharmacy, Department of Pathology
and Microbiology, College of Medicine, Department of Biostatistics, College
of Public Health, and Division of Rheumatology, Department of Internal
Medicine, College of Medicine, University
of Nebraska Medical Center, Omaha, Nebraska 68198-6125, United States
| | - Fang Yuan
- Department
of Pharmaceutical Sciences, College of Pharmacy, Department of Pathology
and Microbiology, College of Medicine, Department of Biostatistics, College
of Public Health, and Division of Rheumatology, Department of Internal
Medicine, College of Medicine, University
of Nebraska Medical Center, Omaha, Nebraska 68198-6125, United States
| | - Fang Yu
- Department
of Pharmaceutical Sciences, College of Pharmacy, Department of Pathology
and Microbiology, College of Medicine, Department of Biostatistics, College
of Public Health, and Division of Rheumatology, Department of Internal
Medicine, College of Medicine, University
of Nebraska Medical Center, Omaha, Nebraska 68198-6125, United States
| | - Geoffrey M. Thiele
- Department
of Pharmaceutical Sciences, College of Pharmacy, Department of Pathology
and Microbiology, College of Medicine, Department of Biostatistics, College
of Public Health, and Division of Rheumatology, Department of Internal
Medicine, College of Medicine, University
of Nebraska Medical Center, Omaha, Nebraska 68198-6125, United States
| | - Tatiana K. Bronich
- Department
of Pharmaceutical Sciences, College of Pharmacy, Department of Pathology
and Microbiology, College of Medicine, Department of Biostatistics, College
of Public Health, and Division of Rheumatology, Department of Internal
Medicine, College of Medicine, University
of Nebraska Medical Center, Omaha, Nebraska 68198-6125, United States
| | - James R. O’Dell
- Department
of Pharmaceutical Sciences, College of Pharmacy, Department of Pathology
and Microbiology, College of Medicine, Department of Biostatistics, College
of Public Health, and Division of Rheumatology, Department of Internal
Medicine, College of Medicine, University
of Nebraska Medical Center, Omaha, Nebraska 68198-6125, United States
| | - Dong Wang
- Department
of Pharmaceutical Sciences, College of Pharmacy, Department of Pathology
and Microbiology, College of Medicine, Department of Biostatistics, College
of Public Health, and Division of Rheumatology, Department of Internal
Medicine, College of Medicine, University
of Nebraska Medical Center, Omaha, Nebraska 68198-6125, United States
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194
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Arifuzzaman MD, Zhao W, Zhao Y. Surface Ligands in the Imprinting and Binding of Molecularly Imprinted Cross-Linked Micelles. Supramol Chem 2018; 30:929-939. [PMID: 31223222 PMCID: PMC6585997 DOI: 10.1080/10610278.2018.1489540] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 06/08/2018] [Indexed: 10/28/2022]
Abstract
Molecular recognition in water is challenging but water-soluble molecularly imprinted nanoparticle (MINP) receptors were produced readily by double cross-linking of surfactant micelles in the presence of suitable template molecules. When the micellar surface was decorated with different polyhydroxylated ligands, significant interactions could be introduced between the surface ligands and the template. Flexible surface ligands worked better than rigid ones to interact with the polar moiety of the template, especially for those template molecules whose water-exposed surface is not properly solvated by water. The importance of these hydrophilic interactions was examined in the context of different substrates, density of the surface ligands, and surface-cross-linking density of the MINP. Together with the hydrophobic interactions in the core, the surface hydrophilic interactions can be used to enhance the binding of guest molecules in water.
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Affiliation(s)
- M D Arifuzzaman
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, USA, Tel: +1-515-294-5845
| | - Wei Zhao
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, USA, Tel: +1-515-294-5845
| | - Yan Zhao
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, USA, Tel: +1-515-294-5845
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195
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Mandracchia D, Trapani A, Perteghella S, Di Franco C, Torre ML, Calleri E, Tripodo G. A Micellar-Hydrogel Nanogrid from a UV Crosslinked Inulin Derivative for the Simultaneous Delivery of Hydrophobic and Hydrophilic Drugs. Pharmaceutics 2018; 10:E97. [PMID: 30029476 PMCID: PMC6161022 DOI: 10.3390/pharmaceutics10030097] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 07/15/2018] [Accepted: 07/16/2018] [Indexed: 11/17/2022] Open
Abstract
Hydrogels are among the most common materials used in drug delivery, as polymeric micelles are too. They, preferentially, load hydrophilic and hydrophobic drugs, respectively. In this paper, we thought to combine the favorable behaviors of both hydrogels and polymeric micelles with the specific aim of delivering hydrophilic and hydrophobic drugs for dual delivery in combination therapy, in particular for colon drug delivery. Thus, we developed a hydrogel by UV crosslinking of a methacrylated (MA) amphiphilic derivative from inulin (INU) (as known INU is specifically degraded into the colon) and vitamin E (VITE), called INVITEMA. The methacrylated micelles were physicochemically characterized and subjected to UV irradiation to form what we called the "nanogrids". The INVITEMA nanogrids were characterized by DSC, SEM, TEM, water uptake and beclomethasone dipropionate (BDP) release. In particular, the release of the hydrophobic drug was specifically assessed to verify that it can spread along the hydrophilic portions and, therefore, effectively released. These systems can open new pharmaceutical applications for known hydrogels or micelle systems, considering that in literature only few examples are present.
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Affiliation(s)
- Delia Mandracchia
- Department of Pharmacy-Drug Sciences, University of Bari "Aldo Moro", Via Orabona 4, 70125 Bari, Italy.
| | - Adriana Trapani
- Department of Pharmacy-Drug Sciences, University of Bari "Aldo Moro", Via Orabona 4, 70125 Bari, Italy.
| | - Sara Perteghella
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Cinzia Di Franco
- Consiglio Nazionale delle Ricerche-Istituto di Fotonica e Nanotecnologie (CNR-IFN) Bari, Via Amendola 173, 70125 Bari, Italy.
| | - Maria Luisa Torre
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Enrica Calleri
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Giuseppe Tripodo
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
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196
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Hirose D, Nozaki S, Kanoh S, Maeda K. Synthesis of Amphiphilic Block Copolymers Containing Chiral Polythiophene Chains and Their Micelle Formation and Chiroptical Properties. Polymers (Basel) 2018; 10:E718. [PMID: 30960643 DOI: 10.3390/polym10070718] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 06/26/2018] [Accepted: 06/27/2018] [Indexed: 11/26/2022] Open
Abstract
Amphiphilic block copolymers consisting of hydrophobic regioregular head-to-tail (HT) chiral ((S)-poly-1a-b-poly-3) or achiral (poly-1b-b-poly-3) polythiophene chains and a hydrophilic poly(acrylic acid) chain were synthesized. (S)-Poly-1a-b-poly-3 with a chiral polythiophene block formed a micelle in water that exhibited a characteristic induced circular dichroism (ICD) in the π–π* transition region due to the formation of supramolecular π-stacked chiral aggregates of the chiral polythiophene blocks in the core. These aggregates were stable, showing no precipitation for more than 5 days. Micelles consisting of chiral (S)-poly-1a-b-poly-3 and achiral poly-1b-b-poly-3 showed negative nonlinear effects on supramolecular chiral aggregate formation in the core. Chiral polythiophene aggregates formed in (S)-poly-1a-b-poly-3 micelle cores were stabilized by the crosslinking of poly(acrylic acid) blocks with diamines in the shell. The ICD intensity of the (S)-poly-1a-b-poly-3 micelle after shell crosslinking showed almost no change with temperature, while that before shell crosslinking decreased with increasing temperature.
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197
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Li P, Han J, Li D, Chen J, Wang W, Xu W. Synthetic Glycopolypeptide Micelle for Targeted Drug Delivery to Hepatic Carcinoma. Polymers (Basel) 2018; 10:E611. [PMID: 30966645 PMCID: PMC6403909 DOI: 10.3390/polym10060611] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 05/14/2018] [Accepted: 05/22/2018] [Indexed: 11/30/2022] Open
Abstract
The targeted delivery of chemotherapy drugs to tumor lesions is a major challenge for the treatment of tumors. Up until now, various polymeric nanoparticles have been explored to improve the targetability of these therapeutic drugs through passive or active targeting processes. In the design and construction of polymer nanoparticles, glycopolypeptide has shown great potential owing to its excellent targeting ability and biocompatibility. In order to enhance the antitumor effect of doxorubicin (DOX), a glycopolypeptide-based micelle (GPM) modified by α-lactose (Lac) was synthesized for targeted treatment of hepatoma. The DOX-loaded GPM (i.e., GPM/DOX) could significantly target human hepatoma (HepG2) cells and further inhibit their proliferation in vitro. Additionally, GPM/DOX exhibited a much higher drug accumulation in tumor tissue and a stronger antitumor effect in vivo than free DOX. The above results revealed that this drug delivery system provides a promising platform for the targeting therapy of hepatic cancer.
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Affiliation(s)
- Pengqiang Li
- Department of Chemistry, Changchun University of Science and Technology, Changchun 130022, China.
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
| | - Jiandong Han
- Department of Chemistry, Changchun University of Science and Technology, Changchun 130022, China.
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
| | - Di Li
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
| | - Jinjin Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
| | - Wei Wang
- Department of Chemistry, Changchun University of Science and Technology, Changchun 130022, China.
| | - Weiguo Xu
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
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198
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Takeuchi I, Mikuni R, Makino K. Synthesis of Phosphoester Compounds Using Lactic Acid for Encapsulation of Paclitaxel. Anticancer Res 2018; 38:3401-3406. [PMID: 29848689 DOI: 10.21873/anticanres.12607] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 05/08/2018] [Accepted: 05/09/2018] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM In the use of paclitaxel, side-effects caused by itself or solubilizing agents have become a major obstacle. In this study we aimed to synthesize biocompatible and degradable compounds for micelles to be used as carriers for paclitaxel. MATERIALS AND METHODS Methoxypolyethylene glycol-lactate was obtained from methyl lactate and methoxypolyethylene glycol having a molecular weight of 350. Monoalkoxy phosphoryl chlorides were obtained from phosphoryl chloride and four kinds of linear alcohols. Then, four kinds of alkyl di(methoxypolyethylene glycol-lactate) phosphates were obtained from them. RESULTS The results of 1H NMR spectroscopy showed that alkyl di(methoxypolyethylene glycol-lactate) phosphates were successfully synthesized. When 1-dodecanol, 1-hexadecanol, 1-octadecanol, and 1-eicosanol were used as side chains, the yields were 73.5±4.2, 69.1±3.6, 72.2±2.8, and 71.8±3.7%, respectively. The spectrum of 31P NMR suggested the existence of optical isomers. CONCLUSION Four kinds of phosphoester compounds for micelle preparations were synthesized using lactic acid.
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Affiliation(s)
- Issei Takeuchi
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan.,Center for Drug Delivery Research, Tokyo University of Science, Chiba, Japan
| | - Rina Mikuni
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Kimiko Makino
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan .,Center for Drug Delivery Research, Tokyo University of Science, Chiba, Japan
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199
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Liou JY, Sun YS. Lateral Order and Self-Organized Morphology of Diblock Copolymer Micellar Films. Polymers (Basel) 2018; 10:E597. [PMID: 30966631 PMCID: PMC6404033 DOI: 10.3390/polym10060597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 05/22/2018] [Accepted: 05/24/2018] [Indexed: 11/16/2022] Open
Abstract
We report the lateral order and self-organized morphology of diblock copolymer polystyrene-block-poly(2-vinylpyridine), P(S-b-2VP), and micelles on silicon substrates (SiOx/Si). These micellar films were prepared by spin coating from polymer solutions of varied concentration of polymer in toluene onto SiOx/Si, and were investigated with grazing-incidence small-angle X-ray scattering (GISAXS) and an atomic force microscope (AFM). With progressively increased surface coverage with increasing concentration, loosely packed spherical micelles, ribbon-like nanostructures, and a second layer of spherical micelles were obtained sequentially. Quantitative analysis and simulations of the micellar packing demonstrates that the spatial ordering of the loosely packed spherical micelles altered from short-range order to hexagonal order when the micellar coverage increased from small to moderate densities of the covered surface. At large densities, anisotropic fusion between spherical micelles caused the ribbon-like nanostructures to have a short-range spatial order; the ordering quality of the second layer was governed by the rugged surface of the underlying layer because the valleys between the ribbon-like nanostructures allowed for further deposition of spherical micelles.
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Affiliation(s)
- Jiun-You Liou
- Department of Chemical and Materials Engineering, National Central University, Taoyuan 32001, Taiwan.
| | - Ya-Sen Sun
- Department of Chemical and Materials Engineering, National Central University, Taoyuan 32001, Taiwan.
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200
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Astruc D, Deraedt C, Djeda R, Ornelas C, Liu X, Rapakousiou A, Ruiz J, Wang Y, Wang Q. Dentromers, a Family of Super Dendrimers with Specific Properties and Applications. Molecules 2018; 23:E966. [PMID: 29677169 DOI: 10.3390/molecules23040966] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 04/16/2018] [Accepted: 04/18/2018] [Indexed: 01/16/2023] Open
Abstract
Dentromers (from dentro, δεντρο: tree in Greek), and meros (μεροσ, in greek: part) are introduced as a family of dendrimers constructed according to successive divergent 1 → 3 branching. The smaller dentromers have 27 terminal branches. With alcohol termini they were originally named arborols by Newkome, who pioneered 1 → 3 constructions of dendrimers and dendrons. Giant dentromers have been constructed and decorated in particular with ferrocene and other redox active groups. The synthesis, specific properties, and applications are examined in this mini review article dedicated to Don Tomalia, with an emphasis on dense peripheral packing favoring the functions of encapsulation, redox sensing, and micellar template for catalysis in water and aqueous solvents.
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