51
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Gontsarik M, Mohammadtaheri M, Yaghmur A, Salentinig S. pH-Triggered nanostructural transformations in antimicrobial peptide/oleic acid self-assemblies. Biomater Sci 2018; 6:803-812. [DOI: 10.1039/c7bm00929a] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This study reports smart nanostructures based on oleic acid/peptide mixtures in water for the delivery of antimicrobial peptides.
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Affiliation(s)
- Mark Gontsarik
- Laboratory for Biointerfaces
- Department Materials meet Life
- Empa Swiss Federal Laboratories for Materials Science and Technology
- St Gallen
- Switzerland
| | - Mahsa Mohammadtaheri
- Laboratory for Biointerfaces
- Department Materials meet Life
- Empa Swiss Federal Laboratories for Materials Science and Technology
- St Gallen
- Switzerland
| | - Anan Yaghmur
- Department of Pharmacy
- Faculty of Health and Medical Sciences
- University of Copenhagen
- DK-2100 Copenhagen Ø
- Denmark
| | - Stefan Salentinig
- Laboratory for Biointerfaces
- Department Materials meet Life
- Empa Swiss Federal Laboratories for Materials Science and Technology
- St Gallen
- Switzerland
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52
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Photoluminescent lyotropic liquid crystals formed by Tyloxapol and n-dodecyl tetraethylene monoether. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.10.039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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53
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Oka T, Hasan M, Islam MZ, Moniruzzaman M, Yamazaki M. Low-pH-Induced Lamellar to Bicontinuous Primitive Cubic Phase Transition in Dioleoylphosphatidylserine/Monoolein Membranes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:12487-12496. [PMID: 28967756 DOI: 10.1021/acs.langmuir.7b02512] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Electrostatic interactions (EIs) play important roles in the structure and stability of inverse bicontinuous cubic (QII) phases of lipid membranes. We examined the effect of pH on the phase of dioleoylphosphatidylserine (DOPS)/monoolein (MO) membranes at low ionic strengths using small-angle X-ray scattering (SAXS). We found that the phase transitions from lamellar liquid-crystalline (Lα) to primitive cubic (QIIP) phases in DOPS/MO (2/8 molar ratio) membranes occurred in buffers containing 50 mM NaCl at and below the final pH of 2.75 as the pH of the membrane suspension was decreased from a neutral value. The kinetic pathway of this transition was revealed using time-resolved SAXS with a stopped-flow apparatus. The first step is a rapid transition from the Lα phase to the hexagonal II (HII) phase, and the second step is a slow transition from the HII phase to the QIIP phase. We determined the rate constants of the first step, k1, and of the second step, k2, by analyzing the time course of SAXS intensities quantitatively. The k1 value increased with temperature. The analysis of this result provided the values of its apparent activation energy, which were constant over temperature but increased with pH. This can be explained by an EI effect on the free energy of the transition state. In contrast, the k2 value decreased with temperature, indicating that the true activation energy increased with temperature. These experimental results were analyzed using the theory of the activation energy of phase transitions of lipid membranes when the free energy of the transition state depends on temperature. On the basis of these results, we discussed the mechanism of this phase transition.
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Affiliation(s)
- Toshihiko Oka
- Nanomaterials Research Division, Research Institute of Electronics, ‡Department of Physics, Graduate School of Science, and §Integrated Bioscience Section, Graduate School of Science and Technology, Shizuoka University , Shizuoka 422-8529, Japan
| | - Moynul Hasan
- Nanomaterials Research Division, Research Institute of Electronics, ‡Department of Physics, Graduate School of Science, and §Integrated Bioscience Section, Graduate School of Science and Technology, Shizuoka University , Shizuoka 422-8529, Japan
| | - Md Zahidul Islam
- Nanomaterials Research Division, Research Institute of Electronics, ‡Department of Physics, Graduate School of Science, and §Integrated Bioscience Section, Graduate School of Science and Technology, Shizuoka University , Shizuoka 422-8529, Japan
| | - Md Moniruzzaman
- Nanomaterials Research Division, Research Institute of Electronics, ‡Department of Physics, Graduate School of Science, and §Integrated Bioscience Section, Graduate School of Science and Technology, Shizuoka University , Shizuoka 422-8529, Japan
| | - Masahito Yamazaki
- Nanomaterials Research Division, Research Institute of Electronics, ‡Department of Physics, Graduate School of Science, and §Integrated Bioscience Section, Graduate School of Science and Technology, Shizuoka University , Shizuoka 422-8529, Japan
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54
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Kluzek M, Tyler AII, Wang S, Chen R, Marques CM, Thalmann F, Seddon JM, Schmutz M. Influence of a pH-sensitive polymer on the structure of monoolein cubosomes. SOFT MATTER 2017; 13:7571-7577. [PMID: 28994440 DOI: 10.1039/c7sm01620d] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Cubosomes consist in submicron size particles of lipid bicontinuous cubic phases stabilized by surfactant polymers. They provide an appealing road towards the practical use of lipid cubic phases for pharmaceutical and cosmetic applications, and efforts are currently being made to control the encapsulation and release properties of these colloidal objects. We overcome in this work the lack of sensitivity of monoolein cubosomes to pH conditions by using a pH sensitive polymer designed to strongly interact with the lipid structure at low pH. Our cryo-transmission electron microscope (cryo-TEM) and small-angle X-ray scattering (SAXS) results show that in the presence of the polymer the cubic phase structure is preserved at neutral pH, albeit with a larger cell size. At pH 5.5, in the presence of the polymer, the nanostructure of the cubosome particles is significantly altered, providing a pathway to design pH-responsive cubosomes for applications in drug delivery.
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Affiliation(s)
- Monika Kluzek
- Université de Strasbourg, CNRS, Institut Charles Sadron, UPR022, 23 rue du Loess, 67034 Strasbourg Cedex, France.
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55
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Kim S, Lee SH, Min SY, Byun KM, Lee SY. Dual-modal cancer detection based on optical pH sensing and Raman spectroscopy. JOURNAL OF BIOMEDICAL OPTICS 2017; 22:1-6. [PMID: 29027408 DOI: 10.1117/1.jbo.22.10.105002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 09/22/2017] [Indexed: 06/07/2023]
Abstract
A dual-modal approach using Raman spectroscopy and optical pH sensing was investigated to discriminate between normal and cancerous tissues. Raman spectroscopy has demonstrated the potential for in vivo cancer detection. However, Raman spectroscopy has suffered from strong fluorescence background of biological samples and subtle spectral differences between normal and disease tissues. To overcome those issues, pH sensing is adopted to Raman spectroscopy as a dual-modal approach. Based on the fact that the pH level in cancerous tissues is lower than that in normal tissues due to insufficient vasculature formation, the dual-modal approach combining the chemical information of Raman spectrum and the metabolic information of pH level can improve the specificity of cancer diagnosis. From human breast tissue samples, Raman spectra and pH levels are measured using fiber-optic-based Raman and pH probes, respectively. The pH sensing is based on the dependence of pH level on optical transmission spectrum. Multivariate statistical analysis is performed to evaluate the classification capability of the dual-modal method. The analytical results show that the dual-modal method based on Raman spectroscopy and optical pH sensing can improve the performance of cancer classification.
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Affiliation(s)
- Soogeun Kim
- Kyung Hee University, Department of Biomedical Engineering, Yongin, Republic of Korea
| | - Seung Ho Lee
- Kyung Hee University, Department of Medical Engineering, Seoul, Republic of Korea
| | - Sun Young Min
- Kyung Hee University School of Medicine, Department of Surgery, Seoul, Republic of Korea
| | - Kyung Min Byun
- Kyung Hee University, Department of Biomedical Engineering, Yongin, Republic of Korea
| | - Soo Yeol Lee
- Kyung Hee University, Department of Biomedical Engineering, Yongin, Republic of Korea
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56
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Lin Z, Liu S, Mao W, Tian H, Wang N, Zhang N, Tian F, Han L, Feng X, Mai Y. Tunable Self-Assembly of Diblock Copolymers into Colloidal Particles with Triply Periodic Minimal Surfaces. Angew Chem Int Ed Engl 2017; 56:7135-7140. [PMID: 28523856 DOI: 10.1002/anie.201702591] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2017] [Revised: 04/02/2017] [Indexed: 11/08/2022]
Abstract
We herein report the tunable self-assembly of simple block copolymers, namely polystyrene-block-poly(ethylene oxide) (PS-b-PEO) diblock copolymers, into porous cubosomes with inverse Im3‾m or Pn3‾m mesophases of controlled unit cell parameters as well as hexasomes with an inverse hexagonal (p6mm) structure, which have been rarely observed in polymer self-assembly. A new morphological phase diagram was constructed for the solution self-assembly of PS-b-PEO based on the volume fraction of the PS block against the initial copolymer concentration. The formation mechanisms of the cubosomes and hexasomes have also been revealed. This study not only affords a simple system for the controllable preparation and fundamental studies of ordered bicontinuous structures, but also opens up a new avenue towards porous architectures with highly ordered pores.
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Affiliation(s)
- Zhixing Lin
- School of Chemistry and Chemical Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Shaohua Liu
- State Key Laboratory of Precision Spectroscopy, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Wenting Mao
- School of Chemistry and Chemical Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Hao Tian
- School of Chemistry and Chemical Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Nan Wang
- School of Chemistry and Chemical Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Ninghe Zhang
- School of Chemistry and Chemical Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Feng Tian
- Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Science, Shanghai, 201204, China
| | - Lu Han
- School of Chemistry and Chemical Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Xinliang Feng
- Department of Chemistry and Food Chemistry, Technische Universität Dresden, Mommsenstrasse 4, 01062, Dresden, Germany
| | - Yiyong Mai
- School of Chemistry and Chemical Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
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57
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Lin Z, Liu S, Mao W, Tian H, Wang N, Zhang N, Tian F, Han L, Feng X, Mai Y. Tunable Self-Assembly of Diblock Copolymers into Colloidal Particles with Triply Periodic Minimal Surfaces. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702591] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Zhixing Lin
- School of Chemistry and Chemical Engineering; Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 China
| | - Shaohua Liu
- State Key Laboratory of Precision Spectroscopy; East China Normal University; 500 Dongchuan Road Shanghai 200241 China
| | - Wenting Mao
- School of Chemistry and Chemical Engineering; Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 China
| | - Hao Tian
- School of Chemistry and Chemical Engineering; Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 China
| | - Nan Wang
- School of Chemistry and Chemical Engineering; Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 China
| | - Ninghe Zhang
- School of Chemistry and Chemical Engineering; Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 China
| | - Feng Tian
- Shanghai Synchrotron Radiation Facility; Shanghai Institute of Applied Physics; Chinese Academy of Science; Shanghai 201204 China
| | - Lu Han
- School of Chemistry and Chemical Engineering; Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 China
| | - Xinliang Feng
- Department of Chemistry and Food Chemistry; Technische Universität Dresden; Mommsenstrasse 4 01062 Dresden Germany
| | - Yiyong Mai
- School of Chemistry and Chemical Engineering; Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 China
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58
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Ghanbari R, Assenza S, Saha A, Mezzenga R. Diffusion of Polymers through Periodic Networks of Lipid-Based Nanochannels. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:3491-3498. [PMID: 28304174 DOI: 10.1021/acs.langmuir.7b00437] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We present an experimental investigation of the diffusion of unfolded polymers in the triply-periodic water-channel network of inverse bicontinuous cubic phases. Depending on the chain size, our results indicate the presence of two different dynamical regimes corresponding to Zimm and Rouse diffusion. We support our findings by scaling arguments based on a combination of blob and effective-medium theories and suggest the presence of a third regime where dynamics is driven by reptation. Our experimental results also show an increasing behavior of the partition coefficient as a function of the polymer molecular weight, indicative of a reduction in the conformational degrees of freedom induced by the confinement.
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Affiliation(s)
- Reza Ghanbari
- Department of Health Sciences & Technology, ETH Zurich , Schmelzbergstrasse 9, CH-8092 Zurich, Switzerland
| | - Salvatore Assenza
- Department of Health Sciences & Technology, ETH Zurich , Schmelzbergstrasse 9, CH-8092 Zurich, Switzerland
| | - Abhijit Saha
- Department of Health Sciences & Technology, ETH Zurich , Schmelzbergstrasse 9, CH-8092 Zurich, Switzerland
| | - Raffaele Mezzenga
- Department of Health Sciences & Technology, ETH Zurich , Schmelzbergstrasse 9, CH-8092 Zurich, Switzerland
- Department of Materials, ETH Zurich , Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland
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59
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Brown R, Madrid E, Castaing R, Stone JM, Squires AM, Edler KJ, Takashina K, Marken F. Free-Standing Phytantriol Q224Cubic-Phase Films: Resistivity Monitoring and Switching. ChemElectroChem 2017. [DOI: 10.1002/celc.201600735] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Rosemary Brown
- Department of Physics and Astronomy; University of Bath; Bath BA2 7AY UK
- Department of Chemistry; University of Bath; Bath BA2 7AY UK
| | - Elena Madrid
- Department of Chemistry; University of Bath; Bath BA2 7AY UK
| | - Remi Castaing
- Department of Chemistry; University of Bath; Bath BA2 7AY UK
| | - James M. Stone
- Department of Physics and Astronomy; University of Bath; Bath BA2 7AY UK
| | | | - Karen J. Edler
- Department of Chemistry; University of Bath; Bath BA2 7AY UK
| | - Kei Takashina
- Department of Physics and Astronomy; University of Bath; Bath BA2 7AY UK
| | - Frank Marken
- Department of Chemistry; University of Bath; Bath BA2 7AY UK
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60
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Antognini LM, Assenza S, Speziale C, Mezzenga R. Quantifying the transport properties of lipid mesophases by theoretical modelling of diffusion experiments. J Chem Phys 2017; 145:084903. [PMID: 27586942 DOI: 10.1063/1.4961224] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Lyotropic Liquid Crystals (LLCs) are a class of lipid-based membranes with a strong potential for drug-delivery employment. The characterization and control of their transport properties is a central issue in this regard, and has recently prompted a notable volume of research on the topic. A promising experimental approach is provided by the so-called diffusion setup, where the drug molecules diffuse from a feeding chamber filled with water to a receiving one passing through a LLC. In the present work we provide a theoretical framework for the proper description of this setup, and validate it by means of targeted experiments. Due to the inhomogeneity of the system, a rich palette of different diffusion dynamics emerges from the interplay of the different time- and lengthscales thereby present. Our work paves the way to the employment of diffusion experiments to quantitatively characterize the transport properties of LLCs, and provides the basic tools for device diffusion setups with controlled kinetic properties.
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Affiliation(s)
- Luca M Antognini
- Food and Soft Materials Science, Institute of Food, Nutrition and Health, ETH Zurich, Schmelzbergstrasse 9, CH-8092 Zurich, Switzerland
| | - Salvatore Assenza
- Food and Soft Materials Science, Institute of Food, Nutrition and Health, ETH Zurich, Schmelzbergstrasse 9, CH-8092 Zurich, Switzerland
| | - Chiara Speziale
- Food and Soft Materials Science, Institute of Food, Nutrition and Health, ETH Zurich, Schmelzbergstrasse 9, CH-8092 Zurich, Switzerland
| | - Raffaele Mezzenga
- Food and Soft Materials Science, Institute of Food, Nutrition and Health, ETH Zurich, Schmelzbergstrasse 9, CH-8092 Zurich, Switzerland
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61
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Nazaruk E, Majkowska-Pilip A, Bilewicz R. Lipidic Cubic-Phase Nanoparticles-Cubosomes for Efficient Drug Delivery to Cancer Cells. Chempluschem 2017; 82:570-575. [PMID: 31961592 DOI: 10.1002/cplu.201600534] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2016] [Revised: 12/15/2016] [Indexed: 12/18/2022]
Abstract
Self-assembled lipid liquid-crystalline nanoparticles, known as cubosomes, were used for the delivery of the anticancer drug doxorubicin (DOX). Several properties make cubosomes a promising alternative in the development of controlled-release systems for drug delivery. They have a larger internal surface area than other carriers, hence deliver more drug molecules to the affected cells and maintain the cubic symmetry of the parent lipidic cubic phase, but at the same time they have a lower viscosity thereby facilitating transport of the drug. The pH-dependent drug release profiles, evaluated by voltammetry, demonstrated triggered drug release from the cubosome carrier to the environment of the cancer cells, where pH is lower. The anticancer effect of a DOX-loaded cubosome on the glioblastoma T98G cell line was found to be highly efficient and required lower concentrations of DOX to inhibit the proliferation of cancer cells than the effective concentrations of free DOX.
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Affiliation(s)
- Ewa Nazaruk
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093, Warsaw, Poland
| | - Agnieszka Majkowska-Pilip
- Centre of Radiochemistry and Nuclear Chemistry, Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195, Warsaw, Poland
| | - Renata Bilewicz
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093, Warsaw, Poland
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62
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Roy B, Hazra P. Dynamics of different steps of the photopyrolytic cycle of an eminent anticancer drug topotecan inside biocompatible lyotropic liquid crystalline systems. RSC Adv 2017. [DOI: 10.1039/c6ra25200a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Dynamics of different steps of photopyrolytic processes of an eminent anticancer drug topotecan have been investigated inside different lyotropic liquid crystalline systems.
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Affiliation(s)
- Bibhisan Roy
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Pune
- India
| | - Partha Hazra
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Pune
- India
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63
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Fong WK, Sánchez-Ferrer A, Ortelli FG, Sun W, Boyd BJ, Mezzenga R. Dynamic formation of nanostructured particles from vesicles via invertase hydrolysis for on-demand delivery. RSC Adv 2017. [DOI: 10.1039/c6ra26688f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Controlled hydrolysis via invertase action alters molecular shape and therefore lipid curvature, consequently triggering the release of encapsulated drug.
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Affiliation(s)
- Wye-Khay Fong
- ETH Zürich
- Department of Health Sciences & Technology
- 8092 Zürich
- Switzerland
- Drug Delivery, Disposition & Dynamics
| | | | | | - Wenjie Sun
- ETH Zürich
- Department of Health Sciences & Technology
- 8092 Zürich
- Switzerland
| | - Ben J. Boyd
- Drug Delivery, Disposition & Dynamics
- Monash Institute of Pharmaceutical Sciences
- Monash University
- Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology
| | - Raffaele Mezzenga
- ETH Zürich
- Department of Health Sciences & Technology
- 8092 Zürich
- Switzerland
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64
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Fong WK, Negrini R, Vallooran JJ, Mezzenga R, Boyd BJ. Responsive self-assembled nanostructured lipid systems for drug delivery and diagnostics. J Colloid Interface Sci 2016; 484:320-339. [PMID: 27623190 DOI: 10.1016/j.jcis.2016.08.077] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 08/27/2016] [Accepted: 08/30/2016] [Indexed: 01/19/2023]
Abstract
While stimuli-responsive polymers have received a huge amount of attention in the literature, responsive lipid-based mesophase systems offer unique opportunities in biomedical applications such as drug delivery and biosensing. The different mesophase equilibrium structures enables dynamic switching between nanostructures to facilitate drug release or as a transducer for recognition events. In drug delivery, this behavior offers researchers the means to deliver a therapeutic payload at a specific rate and time i.e. 'on-demand'. This review summarizes the distinctive features of these multifaceted materials and aggregates the current state of the art research from our groups and others into the use of these materials as bulk gels and nanostructured dispersions for drug delivery, biosensing and diagnostics.
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Affiliation(s)
- Wye-Khay Fong
- Food and Soft Materials Science, Department of Health Science and Technology, ETH Zurich, Schmelzbergstrasse 9, CH-8092 Zurich, Switzerland; Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Renata Negrini
- Food and Soft Materials Science, Department of Health Science and Technology, ETH Zurich, Schmelzbergstrasse 9, CH-8092 Zurich, Switzerland
| | - Jijo J Vallooran
- Food and Soft Materials Science, Department of Health Science and Technology, ETH Zurich, Schmelzbergstrasse 9, CH-8092 Zurich, Switzerland
| | - Raffaele Mezzenga
- Food and Soft Materials Science, Department of Health Science and Technology, ETH Zurich, Schmelzbergstrasse 9, CH-8092 Zurich, Switzerland.
| | - Ben J Boyd
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia.
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65
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Du JD, Fong WK, Caliph S, Boyd BJ. Lipid-based drug delivery systems in the treatment of wet age-related macular degeneration. Drug Deliv Transl Res 2016; 6:781-792. [DOI: 10.1007/s13346-016-0299-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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66
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Fong WK, Hanley TL, Thierry B, Hawley A, Boyd BJ, Landersdorfer CB. External manipulation of nanostructure in photoresponsive lipid depot matrix to control and predict drug release in vivo. J Control Release 2016; 228:67-73. [DOI: 10.1016/j.jconrel.2016.02.042] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Revised: 02/11/2016] [Accepted: 02/24/2016] [Indexed: 01/17/2023]
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67
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Oka T, Saiki T, Alam JM, Yamazaki M. Activation Energy of the Low-pH-Induced Lamellar to Bicontinuous Cubic Phase Transition in Dioleoylphosphatidylserine/Monoolein. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:1327-1337. [PMID: 26766583 DOI: 10.1021/acs.langmuir.5b03785] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Electrostatic interaction is an important factor for phase transitions between lamellar liquid-crystalline (Lα) and inverse bicontinuous cubic (QII) phases. We investigated the effect of temperature on the low-pH-induced Lα to double-diamond cubic (QII(D)) phase transition in dioleoylphosphatidylserine (DOPS)/monoolein (MO) using time-resolved small-angle X-ray scattering with a stopped-flow apparatus. Under all conditions of temperature and pH, the Lα phase was directly transformed into an intermediate inverse hexagonal (HII) phase, and subsequently the HII phase slowly converted to the QII(D) phase. We obtained the rate constants of the initial step (i.e., the Lα to HII phase transition) and of the second step (i.e., the HII to QII(D) phase transition) using the non-negative matrix factorization method. The rate constant of the initial step increased with temperature. By analyzing this result, we obtained the values of its apparent activation energy, Ea (Lα → HII), which did not change with temperature but increased with an increase in pH. In contrast, the rate constant of the second step decreased with temperature at pH 2.6, although it increased with temperature at pH 2.7 and 2.8. These results indicate that the value of Ea (HII → QII(D)) at pH 2.6 increased with temperature, but the values of Ea (HII → QII(D)) at pH 2.7 and 2.8 were constant with temperature. The values of Ea (HII → QII(D)) were smaller than those of Ea (Lα → HII) at the same pH. We analyzed these results using a modified quantitative theory on the activation energy of phase transitions of lipid membranes proposed initially by Squires et al. (Squires, A. M.; Conn, C. E.; Seddon, J. M.; Templer, R. H. Soft Matter 2009, 5, 4773). On the basis of these results, we discuss the mechanism of this phase transition.
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Affiliation(s)
- Toshihiko Oka
- Nanomaterials Research Division, Research Institute of Electronics, ‡Dept. Physics, Graduate School of Science, §Integrated Bioscience Section, Graduate School of Science and Technology, Shizuoka University , Shizuoka 422-8529, Japan
| | - Takahiro Saiki
- Nanomaterials Research Division, Research Institute of Electronics, ‡Dept. Physics, Graduate School of Science, §Integrated Bioscience Section, Graduate School of Science and Technology, Shizuoka University , Shizuoka 422-8529, Japan
| | - Jahangir Md Alam
- Nanomaterials Research Division, Research Institute of Electronics, ‡Dept. Physics, Graduate School of Science, §Integrated Bioscience Section, Graduate School of Science and Technology, Shizuoka University , Shizuoka 422-8529, Japan
| | - Masahito Yamazaki
- Nanomaterials Research Division, Research Institute of Electronics, ‡Dept. Physics, Graduate School of Science, §Integrated Bioscience Section, Graduate School of Science and Technology, Shizuoka University , Shizuoka 422-8529, Japan
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Li L, Lu B, Fan Q, Wu J, Wei L, Hou J, Guo X, Liu Z. Synthesis and self-assembly behavior of pH-responsive star-shaped POSS-(PCL-P(DMAEMA-co-PEGMA))16 inorganic/organic hybrid block copolymer for the controlled intracellular delivery of doxorubicin. RSC Adv 2016. [DOI: 10.1039/c6ra09803g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Illustration of pH-responsive self-assembly of the star-shaped POSS-(PCL-P(DMAEMA-co-PEGMA))16 copolymer for the efficient intracellular release of anti-cancer drugs triggered by the acidic microenvironment inside the tumor tissue.
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Affiliation(s)
- Lei Li
- College of Chemistry and Chemical Engineering
- Shihezi University/Key Laboratory for Chemical Materials of Xinjiang Uygur Autonomous Region/Engineering Center for Chemical Materials of Xinjiang Bingtuan
- Shihezi University
- Shihezi 832003
- China
| | - Beibei Lu
- College of Chemistry and Chemical Engineering
- Shihezi University/Key Laboratory for Chemical Materials of Xinjiang Uygur Autonomous Region/Engineering Center for Chemical Materials of Xinjiang Bingtuan
- Shihezi University
- Shihezi 832003
- China
| | - Qikui Fan
- Center for Materials Chemistry Frontier Institute of Science and Technology Xi'an Jiaotong University Xi'an
- P. R. China
| | - Jianning Wu
- College of Chemistry and Chemical Engineering
- Shihezi University/Key Laboratory for Chemical Materials of Xinjiang Uygur Autonomous Region/Engineering Center for Chemical Materials of Xinjiang Bingtuan
- Shihezi University
- Shihezi 832003
- China
| | - Lulu Wei
- College of Chemistry and Chemical Engineering
- Shihezi University/Key Laboratory for Chemical Materials of Xinjiang Uygur Autonomous Region/Engineering Center for Chemical Materials of Xinjiang Bingtuan
- Shihezi University
- Shihezi 832003
- China
| | - Jun Hou
- Department of Immunology
- Shihezi University School of Medicine/Department of Pathology and Key Laboratories for Xinjiang Endemic and Ethnic Diseases
- Shihezi University School of Medicine
- Xinjiang 832003
- China
| | - Xuhong Guo
- College of Chemistry and Chemical Engineering
- Shihezi University/Key Laboratory for Chemical Materials of Xinjiang Uygur Autonomous Region/Engineering Center for Chemical Materials of Xinjiang Bingtuan
- Shihezi University
- Shihezi 832003
- China
| | - Zhiyong Liu
- College of Chemistry and Chemical Engineering
- Shihezi University/Key Laboratory for Chemical Materials of Xinjiang Uygur Autonomous Region/Engineering Center for Chemical Materials of Xinjiang Bingtuan
- Shihezi University
- Shihezi 832003
- China
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69
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Nazaruk E, Miszta P, Filipek S, Górecka E, Landau EM, Bilewicz R. Lyotropic Cubic Phases for Drug Delivery: Diffusion and Sustained Release from the Mesophase Evaluated by Electrochemical Methods. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:12753-12761. [PMID: 26513537 DOI: 10.1021/acs.langmuir.5b03247] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Lyotropic liquid crystalline systems are excellent carriers for drugs due to their biocompatibility, stability in aqueous environment, and well-defined structure that allow them to host significantly larger amounts of drugs than carriers such as liposomes or gold nanoparticles. Incorporating the drug within the mesophase gel, or the cubosome/hexosome nanoparticles, decreased its toxic effects toward healthy cells, while appropriate mechanisms can stimulate the release of the drug from the carrier when it approaches the cancerous cell environment. Electrochemical methods-chronocoulometry and voltammetry at micro and normal size electrodes-are used for the first time to simultaneously determine the diffusion coefficients and effective concentrations of a toxic anticancer drug, doxorubicin, in the channels of three liquid-crystalline lipidic cubic phases. This approach was instrumental in demonstrating that the drug diffusion and kinetics of release from the mesophases depend on the aqueous channel size, which in turn is related to the identity and structure of the amphiphilic molecules used for the formation of the mesophase. Structural parameters of the cubic phases with the incorporated drug were characterized by small-angle X-ray scattering (SAXS), and molecular dynamics simulations were applied in order to describe the differences in the distribution of doxorubicin in the cubic phase matrix at acidic and neutral pH. The release of the drug from the phase was retarded at physiological pH, while at lower pH, corresponding to the cancer environment, it was accelerated, provided that suitable amphiphilic molecules were employed for the construction of the liquid crystal drug delivery system.
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Affiliation(s)
- Ewa Nazaruk
- Faculty of Chemistry, University of Warsaw , Pasteura 1 02093 Warsaw, Poland
| | - Przemysław Miszta
- Faculty of Chemistry, University of Warsaw , Pasteura 1 02093 Warsaw, Poland
| | - Sławomir Filipek
- Faculty of Chemistry, University of Warsaw , Pasteura 1 02093 Warsaw, Poland
| | - Ewa Górecka
- Faculty of Chemistry, University of Warsaw , Pasteura 1 02093 Warsaw, Poland
| | - Ehud M Landau
- Department of Chemistry, University of Zürich Winterthurerstrasse 190, 8057 Zürich, Switzerland
| | - Renata Bilewicz
- Faculty of Chemistry, University of Warsaw , Pasteura 1 02093 Warsaw, Poland
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70
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Tangso KJ, Patel H, Lindberg S, Hartley PG, Knott R, Spicer PT, Boyd BJ. Controlling the Mesostructure Formation within the Shell of Novel Cubic/Hexagonal Phase Cetyltrimethylammonium Bromide-Poly(acrylamide-acrylic acid) Capsules for pH Stimulated Release. ACS APPLIED MATERIALS & INTERFACES 2015; 7:24501-24509. [PMID: 26457761 DOI: 10.1021/acsami.5b05821] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The self-assembly of ordered structures in mixtures of oppositely charged surfactant and polymer systems has been exploited in various cleaning and pharmaceutical applications and continue to attract much interest since their discovery in the late twentieth century. The ability to control the electrostatic and hydrophobic interactions that dictate the formation of liquid crystalline phases in these systems is advantageous in manipulation of structure and rendering them responsive to external stimuli. Nanostructured capsules comprised of the cationic surfactant, cetyltrimethylammonium bromide (CTAB), and the diblock copolymer poly(acrylamide-acrylic acid) (PAAm-AA) were prepared to assess their potential as pH responsive nanomaterials. Crossed-polarizing light microscopy (CPLM) and small-angle X-ray scattering (SAXS) identified coexisting Pm3n cubic and hexagonal phases at the surfactant-polymer interface. The hydrophobic and electrostatic interactions between the oppositely charged components were studied by varying temperature and solution pH, respectively, and were found to influence the liquid crystalline nanostructure formed. The lattice parameter of the mesophases and the fraction of cubic phase in the system decreased upon heating. Acidic conditions resulted in the loss of the highly ordered structures due to protonation of the carboxylic acid group, and subsequent reduction of attractive forces previously present between the oppositely charged molecules. The rate of release of the model hydrophilic drug, Rhodamine B (RhB), from nanostructured macro-sized capsules significantly increased when the pH of the solution was adjusted from pH 7 to pH 2. This allowed for immediate release of the compound of interest "on demand", opening new options for structured materials with increased functionality over typical layer-by-layer capsules.
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Affiliation(s)
- Kristian J Tangso
- Drug Delivery, Disposition and Dynamics and ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus) , 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Hetika Patel
- School of Pharmacy, University College London , 29-39 Brunswick Square, London WC1N 1AX, United Kingdom
| | - Seth Lindberg
- The Procter and Gamble Company , Corporate Engineering Technical Laboratories Building, Cincinnati, Ohio 45069, United States
| | - Patrick G Hartley
- Commonwealth Scientific and Industrial Research Organization , Bag 10, Clayton South, Victoria 3169, Australia
| | - Robert Knott
- Bragg Institute, Australian Nuclear Science and Technology Organization , Menai, New South Wales 2234, Australia
| | - Patrick T Spicer
- School of Chemical Engineering, University of New South Wales , Sydney, New South Wales 2052, Australia
| | - Ben J Boyd
- Drug Delivery, Disposition and Dynamics and ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus) , 381 Royal Parade, Parkville, Victoria 3052, Australia
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71
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Olutaş EB, Balcı FM, Dag Ö. Strong Acid-Nonionic Surfactant Lyotropic Liquid-Crystalline Mesophases as Media for the Synthesis of Carbon Quantum Dots and Highly Proton Conducting Mesostructured Silica Thin Films and Monoliths. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:10265-10271. [PMID: 26332603 DOI: 10.1021/acs.langmuir.5b02225] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Lyotropic liquid-crystalline (LLC) materials are important in designing porous materials, and acids are as important in chemical synthesis. Combining these two important concepts will be highly beneficial to chemistry and material science. In this work, we show that a strong acid can be used as a solvent for the assembly of nonionic surfactants into various mesophases. Sulfuric acid (SA), 10-lauryl ether (C12E10), and a small amount of water form bicontinuous cubic (V1), 2D-hexagonal (H1), and micelle cubic (I1) mesophases with increasing SA/C12E10 mole ratio. A mixture of SA and C12E10 is fluidic but transforms to a highly ordered LLC mesophase by absorbing ambient water. The LLC mesophase displays high proton conductivity (1.5 to 19.0 mS/cm at room temperature) that increases with an increasing SA content up to 11 SA/C12E10 mole ratio, where the absorbed water is constant with respect to the SA amount but gradually increases from a 2.3 to 4.3 H2O/C12E10 mole ratio with increasing SA/C12E10 from 2 to 11, respectively. The mixture of SA and C12E10 slowly undergoes carbonization to produce carbon quantum dots (c-dots). The carbonization process can be controlled by simply controlling the water content of the media, and it can be almost halted by leaving the samples under ambient conditions, where the mixture slowly absorbs water to form photoluminescent c-dot-embedded mesophases. Over time the c-dots grow in size and increase in number, and the photoluminescence frequency gradually shifts to a lower frequency. The SA/C12E10 mesophase can also be used as a template to produce highly proton conducting mesostructured silica films and monoliths, as high as 19.3 mS/cm under ambient conditions. Aging the silica samples enhances the conductivity that can be even larger than for the LLC mesophase with the same amount of SA. The presence of silica has a positive effect on the proton conductivity of SA/C12E10 systems.
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Affiliation(s)
- Elif B Olutaş
- Bilkent University , Department of Chemistry, 06800 Ankara, Turkey
- Department of Chemistry, Abant İzzet Baysal University , 14280 Bolu, Turkey
| | - Fadime M Balcı
- Bilkent University , Department of Chemistry, 06800 Ankara, Turkey
| | - Ömer Dag
- Bilkent University , Department of Chemistry, 06800 Ankara, Turkey
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