1
|
Rui X, Watanabe NM, Okamoto Y, Wakileh W, Umakoshi H. Exploring pH-Triggered Lamellar to Cubic Phase Transition in 2-Hydroxyoleic Acid/Monoolein Nanodispersions: Insights into Membrane Physicochemical Properties. J Phys Chem B 2024; 128:9151-9162. [PMID: 39285755 DOI: 10.1021/acs.jpcb.4c03747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/27/2024]
Abstract
Self-assembled lipid nanoparticles (LNPs) are essential nanocarriers for drug delivery. Functionalization of LNPs with ionizable lipids creates pH-responsive nanoparticles that change structures under varying pH conditions, enabling pH-triggered drug release. Typically, bicontinuous cubic phase nanoparticles (Cubosomes) and lamellar structured vesicles (Liposomes) differ in lipid packing statuses, affecting drug release and cellular uptake. However, most research predominantly focuses on elucidating lattice structure changes of these LNPs without a deep investigation of lipid-membrane properties. Addressing this gap, our study delves into the lipid-membrane physicochemical property variations during the lamellar-to-cubic phase transition. Here, we prepared pH-responsive LNPs using 2-hydroxyoleic acid/monoolein (2-OHOA/MO) binary components. Small-angle X-ray scattering (SAXS) revealed a phase transition from lamellar vesicles (Lα) to cubosomes (Im3m/Pn3m) with pH reduction. Laurdan and 1,6-diphenyl-1,3,5-hexatriene (DPH) fluorescence probes tracked the lipid-water interfacial polarity and lipid-membrane fluidity variations during the phase transition. Raman spectroscopy provided further insights into lipid-membrane lipid chain packing and chain torsion. We observed that the changes in lipid-membrane properties coincided with the lamellar-to-cubic phase transition, emphasizing the interplay between the phase structure and lipid-membrane behaviors in the 2-OHOA/MO system. This study provides insights into the lipid-membrane properties variation during the pH-triggered phase transition in the 2-OHOA/MO system, guiding future research toward more effective and reliable pH-responsive drug delivery platforms.
Collapse
Affiliation(s)
- Xuehui Rui
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
| | - Nozomi Morishita Watanabe
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
| | - Yukihiro Okamoto
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
| | - Ward Wakileh
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
| | - Hiroshi Umakoshi
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
| |
Collapse
|
2
|
Selivanova NM, Galeeva AI, Ziganshin MA, Galyametdinov YG. Pluronic P123/DMSO Lyotropic Liquid Crystal for Incorporating Bioactive Substances for Topical Application. J Phys Chem B 2024; 128:5127-5134. [PMID: 38736379 DOI: 10.1021/acs.jpcb.4c00929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
Lyotropic liquid crystals (LLCs) have attracted considerably growing interest in drug delivery applications over the last years. The structure of LLC matrices is complementary to cell membranes and provides an efficient, controlled, and selective release of drugs. In this work, a complex of experimental methods was used to characterize binary LLCs Pluronic P123/DMSO and triple LLC systems Pluronic P123/DMSO/Ibuprofen, which are interesting as transdermal drug delivery systems. Liquid crystalline, thermal, and rheological properties of LLCs were studied. Concentration and temperature areas of the lyomesophase existence were found, and phase transition enthalpies were evaluated. Intermolecular interactions among the components were studied by infrared (IR) spectroscopy. In vitro studies of Ibuprofen (Ibu) release from various LLCs allow differentiation of its release depending on the polymer content. Atomic force microscopy and contact angle methods were used to characterize the surface morphology of the hydrophobic membrane, which was used as a stratum corneum model, and also evaluate the adhesion work of the LLCs. A complex analysis of the results provided by these experimental methods allowed revealing correlations between the phase behavior and rheological characteristics of the LLCs and release kinetics of ibuprofen. The proposed biocompatible systems have considerable potential for a transdermal delivery of bioactive substances.
Collapse
Affiliation(s)
- Natalia M Selivanova
- Physical and Colloid Chemistry Department, Kazan National Research Technological University, 68 Karl Marx St., 420015 Kazan, Russia
| | - Aliya I Galeeva
- Physical and Colloid Chemistry Department, Kazan National Research Technological University, 68 Karl Marx St., 420015 Kazan, Russia
| | - Marat A Ziganshin
- Physical Chemistry Department, A.M. Butlerov Institute of Chemistry, Kazan (Volga Region) Federal University, 18 Kremlevskaya St., 420008 Kazan, Russia
| | - Yuriy G Galyametdinov
- Physical and Colloid Chemistry Department, Kazan National Research Technological University, 68 Karl Marx St., 420015 Kazan, Russia
| |
Collapse
|
3
|
Cai X, Refaat A, Gan PY, Fan B, Yu H, Thang SH, Drummond CJ, Voelcker NH, Tran N, Zhai J. Angiopep-2-Functionalized Lipid Cubosomes for Blood-Brain Barrier Crossing and Glioblastoma Treatment. ACS APPLIED MATERIALS & INTERFACES 2024; 16:12161-12174. [PMID: 38416873 DOI: 10.1021/acsami.3c14709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/01/2024]
Abstract
Glioblastoma multiforme (GBM) is an aggressive brain cancer with high malignancy and resistance to conventional treatments, resulting in a bleak prognosis. Nanoparticles offer a way to cross the blood-brain barrier (BBB) and deliver precise therapies to tumor sites with reduced side effects. In this study, we developed angiopep-2 (Ang2)-functionalized lipid cubosomes loaded with cisplatin (CDDP) and temozolomide (TMZ) for crossing the BBB and providing targeted glioblastoma therapy. Developed lipid cubosomes showed a particle size of around 300 nm and possessed an internal ordered inverse primitive cubic phase, a high conjugation efficiency of Ang2 to the particle surface, and an encapsulation efficiency of more than 70% of CDDP and TMZ. In vitro models, including BBB hCMEC/D3 cell tight monolayer, 3D BBB cell spheroid, and microfluidic BBB/GBM-on-a-chip models with cocultured BBB and glioblastoma cells, were employed to study the efficiency of the developed cubosomes to cross the BBB and showed that Ang2-functionalized cubosomes can penetrate the BBB more effectively. Furthermore, Ang2-functionalized cubosomes showed significantly higher uptake by U87 glioblastoma cells, with a 3-fold increase observed in the BBB/GBM-on-a-chip model as compared to that of the bare cubosomes. Additionally, the in vivo biodistribution showed that Ang2 modification could significantly enhance the brain accumulation of cubosomes in comparison to that of non-functionalized particles. Moreover, CDDP-loaded Ang2-functionalized cubosomes presented an enhanced toxic effect on U87 spheroids. These findings suggest that the developed Ang2-cubosomes are prospective for improved BBB crossing and enhanced delivery of therapeutics to glioblastoma and are worth pursuing further as a potential application of nanomedicine for GBM treatment.
Collapse
Affiliation(s)
- Xudong Cai
- School of Science, STEM College, RMIT University, Melbourne 3000, VIC, Australia
| | - Ahmed Refaat
- Monash Institute of Pharmaceutical Sciences, Monash University, Melbourne 3052, VIC, Australia
| | - Poh-Yi Gan
- Department of Medicine, Centre for Inflammatory Diseases, Monash University, 246 Clayton Rd, Clayton 3168, VIC, Australia
| | - Bo Fan
- School of Chemistry, Monash University, Clayton 3800, VIC, Australia
| | - Haitao Yu
- School of Science, STEM College, RMIT University, Melbourne 3000, VIC, Australia
| | - San H Thang
- School of Chemistry, Monash University, Clayton 3800, VIC, Australia
| | - Calum J Drummond
- School of Science, STEM College, RMIT University, Melbourne 3000, VIC, Australia
| | - Nicolas H Voelcker
- Monash Institute of Pharmaceutical Sciences, Monash University, Melbourne 3052, VIC, Australia
- Melbourne Centre for Nanofabrication, Victorian Node of the Australian National Fabrication Facility, Clayton 3168, Victoria, Australia
- Department of Materials Science & Engineering, Monash University, Clayton 3168, Victoria, Australia
| | - Nhiem Tran
- School of Science, STEM College, RMIT University, Melbourne 3000, VIC, Australia
| | - Jiali Zhai
- School of Science, STEM College, RMIT University, Melbourne 3000, VIC, Australia
| |
Collapse
|
4
|
Leu JSL, Teoh JJX, Ling ALQ, Chong J, Loo YS, Mat Azmi ID, Zahid NI, Bose RJC, Madheswaran T. Recent Advances in the Development of Liquid Crystalline Nanoparticles as Drug Delivery Systems. Pharmaceutics 2023; 15:pharmaceutics15051421. [PMID: 37242663 DOI: 10.3390/pharmaceutics15051421] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/22/2023] [Accepted: 04/25/2023] [Indexed: 05/28/2023] Open
Abstract
Due to their distinctive structural features, lyotropic nonlamellar liquid crystalline nanoparticles (LCNPs), such as cubosomes and hexosomes, are considered effective drug delivery systems. Cubosomes have a lipid bilayer that makes a membrane lattice with two water channels that are intertwined. Hexosomes are inverse hexagonal phases made of an infinite number of hexagonal lattices that are tightly connected with water channels. These nanostructures are often stabilized by surfactants. The structure's membrane has a much larger surface area than that of other lipid nanoparticles, which makes it possible to load therapeutic molecules. In addition, the composition of mesophases can be modified by pore diameters, thus influencing drug release. Much research has been conducted in recent years to improve their preparation and characterization, as well as to control drug release and improve the efficacy of loaded bioactive chemicals. This article reviews current advances in LCNP technology that permit their application, as well as design ideas for revolutionary biomedical applications. Furthermore, we have provided a summary of the application of LCNPs based on the administration routes, including the pharmacokinetic modulation property.
Collapse
Affiliation(s)
- Jassica S L Leu
- School of Pharmacy, International Medical University, Jalan Jalil Perkasa 19, Bukit Jalil, Kuala Lumpur 57000, Selangor, Malaysia
| | - Jasy J X Teoh
- School of Pharmacy, International Medical University, Jalan Jalil Perkasa 19, Bukit Jalil, Kuala Lumpur 57000, Selangor, Malaysia
| | - Angel L Q Ling
- School of Pharmacy, International Medical University, Jalan Jalil Perkasa 19, Bukit Jalil, Kuala Lumpur 57000, Selangor, Malaysia
| | - Joey Chong
- School of Pharmacy, International Medical University, Jalan Jalil Perkasa 19, Bukit Jalil, Kuala Lumpur 57000, Selangor, Malaysia
| | - Yan Shan Loo
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
| | - Intan Diana Mat Azmi
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
| | - Noor Idayu Zahid
- Centre for Fundamental and Frontier Sciences in Nanostructure Self-Assembly, Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur 50603, Selangor, Malaysia
| | - Rajendran J C Bose
- Masonic Medical Research Institute, 2150 Bleecker St, Utica, NY 13501, USA
| | - Thiagarajan Madheswaran
- Department of Pharmaceutical Technology, School of Pharmacy, International Medical University, Jalan Jalil Perkasa 19, Bukit Jalil, Kuala Lumpur 57000, Selangor, Malaysia
| |
Collapse
|
5
|
Akanchise T, Angelova A. Potential of Nano-Antioxidants and Nanomedicine for Recovery from Neurological Disorders Linked to Long COVID Syndrome. Antioxidants (Basel) 2023; 12:393. [PMID: 36829952 PMCID: PMC9952277 DOI: 10.3390/antiox12020393] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/27/2023] [Accepted: 02/02/2023] [Indexed: 02/08/2023] Open
Abstract
Long-term neurological complications, persisting in patients who cannot fully recover several months after severe SARS-CoV-2 coronavirus infection, are referred to as neurological sequelae of the long COVID syndrome. Among the numerous clinical post-acute COVID-19 symptoms, neurological and psychiatric manifestations comprise prolonged fatigue, "brain fog", memory deficits, headache, ageusia, anosmia, myalgias, cognitive impairments, anxiety, and depression lasting several months. Considering that neurons are highly vulnerable to inflammatory and oxidative stress damages following the overproduction of reactive oxygen species (ROS), neuroinflammation and oxidative stress have been suggested to dominate the pathophysiological mechanisms of the long COVID syndrome. It is emphasized that mitochondrial dysfunction and oxidative stress damages are crucial for the pathogenesis of neurodegenerative disorders. Importantly, antioxidant therapies have the potential to slow down and prevent disease progression. However, many antioxidant compounds display low bioavailability, instability, and transport to targeted tissues, limiting their clinical applications. Various nanocarrier types, e.g., liposomes, cubosomes, solid lipid nanoparticles, micelles, dendrimers, carbon-based nanostructures, nanoceria, and other inorganic nanoparticles, can be employed to enhance antioxidant bioavailability. Here, we highlight the potential of phytochemical antioxidants and other neuroprotective agents (curcumin, quercetin, vitamins C, E and D, melatonin, rosmarinic acid, N-acetylcysteine, and Ginkgo Biloba derivatives) in therapeutic strategies for neuroregeneration. A particular focus is given to the beneficial role of nanoparticle-mediated drug-delivery systems in addressing the challenges of antioxidants for managing and preventing neurological disorders as factors of long COVID sequelae.
Collapse
Affiliation(s)
| | - Angelina Angelova
- Université Paris-Saclay, CNRS, Institut Galien Paris-Saclay, 91400 Orsay, France
| |
Collapse
|
6
|
Cai X, Fan B, Thang SH, Drummond CJ, Tran N, Zhai J. Paclitaxel-loaded cubosome lipid nanocarriers stabilised with pH and hydrogen peroxide-responsive steric stabilisers as drug delivery vehicles. J Mater Chem B 2023; 11:403-414. [PMID: 36511883 DOI: 10.1039/d2tb01530g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Responsive nanoparticle delivery systems hold great potential for next-generation chemotherapeutic treatment with reduced off-target side effects. In this work, we formulated responsive lipid-based cubosomes loaded with paclitaxel (PTX) as a model drug and stabilised by novel amphiphilic block copolymers (ABCs) containing the pH-responsive poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) and/or the hydrogen peroxide (H2O2)-responsive poly(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl acrylate) (PTBA) blocks. The results showed that these cubosomes with a particle size of around 250 nm exhibited excellent PTX encapsulation efficiency of up to 60% and had the ability to control the release rate of the drug in response to pH and H2O2 changes. Specifically, compared to the physiological pH of 7.4, PTX was released faster from the cubosome carriers when exposed to pH 5.5 and/or 50 mM H2O2 conditions, which are pathological conditions found in a tumour microenvironment. In vitro cytotoxicity and cell uptake studies further investigated the cellular interactions of these cubosomes. It was found that cubosomes containing PTX had more toxic effects than the control free PTX sample. Compared to cubosomes stabilised by the non-responsive block copolymer Pluronic® F127, the ABC-stabilised cubosomes also had higher cell internalisation efficiency demonstrated by the cytoplasmic fluorescence intensities using confocal microscopy. These results demonstrated that ABCs containing responsive moieties can stabilise lipid cubosomes and enhance controlled release of poorly soluble chemotherapeutics and cellular uptake.
Collapse
Affiliation(s)
- Xudong Cai
- School of Science, STEM college, RMIT University, Melbourne, VIC 3000, Australia.
| | - Bo Fan
- School of Chemistry, Monash University, Clayton, VIC 3800, Australia
| | - San H Thang
- School of Chemistry, Monash University, Clayton, VIC 3800, Australia
| | - Calum J Drummond
- School of Science, STEM college, RMIT University, Melbourne, VIC 3000, Australia.
| | - Nhiem Tran
- School of Science, STEM college, RMIT University, Melbourne, VIC 3000, Australia.
| | - Jiali Zhai
- School of Science, STEM college, RMIT University, Melbourne, VIC 3000, Australia.
| |
Collapse
|
7
|
Blanco-Fernandez G, Blanco-Fernandez B, Fernández-Ferreiro A, Otero-Espinar F. Bringing lipidic lyotropic liquid crystal technology into biomedicine. Trends Pharmacol Sci 2023; 44:7-10. [PMID: 35400560 DOI: 10.1016/j.tips.2022.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 03/13/2022] [Accepted: 03/15/2022] [Indexed: 12/27/2022]
Abstract
Liquid crystals (LCs), discovered more than 130 years ago, are now emerging in the field of biomedicine. This article highlights the recent uses of lipid lyotropic LCs in therapeutics delivery, imaging, and tissue engineering and invites the scientific community to continue exploring the design of more complex LCs.
Collapse
Affiliation(s)
- Guillermo Blanco-Fernandez
- Pharmacology, Pharmacy and Pharmaceutical Technology Department, Faculty of Pharmacy, University of Santiago de Compostela (USC), Santiago de Compostela, Spain; Paraquasil Group, Health Research Institute of Santiago de Compostela (FIDIS), Santiago de Compostela, Spain; Institute of Materials (iMATUS), University of Santiago de Compostela (USC), Santiago de Compostela, Spain
| | - Barbara Blanco-Fernandez
- CIBER in Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, Madrid, Spain; Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Baldiri Reixac 10-12, Barcelona, 08028, Spain.
| | - Anxo Fernández-Ferreiro
- Pharmacology Group, Health Research Institute of Santiago de Compostela (FIDIS), Santiago de Compostela, Spain; Pharmacy Department, University Clinical Hospital of Santiago de Compostela (SERGAS), Santiago de Compostela, Spain.
| | - Francisco Otero-Espinar
- Pharmacology, Pharmacy and Pharmaceutical Technology Department, Faculty of Pharmacy, University of Santiago de Compostela (USC), Santiago de Compostela, Spain; Paraquasil Group, Health Research Institute of Santiago de Compostela (FIDIS), Santiago de Compostela, Spain; Institute of Materials (iMATUS), University of Santiago de Compostela (USC), Santiago de Compostela, Spain.
| |
Collapse
|
8
|
Zhai J, Bao L, Walduck AK, Dyett BP, Cai X, Li M, Nasa Z, Drummond CJ. Enhancing the photoluminescence and cellular uptake of fluorescent carbon nanodots via cubosome lipid nanocarriers. NANOSCALE 2022; 14:17940-17954. [PMID: 36349848 DOI: 10.1039/d2nr03415h] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Carbon nanodots (C-dots) have attracted much attention for their use in the fields of bioimaging, drug delivery, and sensing due to their excellent fluorescent and photoluminescent properties, photostability, biocompatibility, and amenability to surface modification. Herein, we report a nanocomposite formulation of C-dots (<5 nm) encapsulated in lipid-based lyotropic liquid crystalline nanoparticles (∼250 nm) via either passive diffusion or electrostatic mechanisms. The physicochemical properties of the nanocomposite formulation including particle size, surface charge, internal cubic nanostructures, and pH-dependent fluorescent properties were characterised. Upon loading of C-dots into lipid nanoparticles, the highly ordered inverse bicontinuous cubic mesophase existed in the internal phase of the nanoparticles, demonstrated by synchrotron small angle X-ray scattering, molecular dynamic simulation and cryogenic transmission electron microscopy. The pH-dependent fluorescent property of the C-dots was modified via electrostatic interaction between the C-dots and cationic lipid nanoparticles, which further enhanced the brightness of C-dots through self-quenching prevention. The cytotoxicity and cellular uptake efficiency of the developed nanocomposites were also examined in an epithelial gastric adenocarcinoma cell line (AGS) and a macrophage cell line (stimulated THP-1). Compared to free C-dots, the uptake and cell imaging potential of the C-dot nanocomposites was significantly improved, by several orders of magnitude as demonstrated by cytoplasmic fluorescent intensities using confocal microscopy. Loading C-dots into mesoporous lipid nanocarriers presents a new way of modifying C-dot physicochemical and fluorescent properties, alternative to direct chemical surface modification, and advances the bioimaging potential of C-dots by enhancing cellular uptake efficiency and converging C-dot light emission.
Collapse
Affiliation(s)
- Jiali Zhai
- School of Science, STEM College, RMIT University, Melbourne, VIC 3000, Australia.
| | - Lei Bao
- School of Engineering, STEM College, RMIT University, Melbourne, VIC 3000, Australia.
| | - Anna K Walduck
- School of Science, STEM College, RMIT University, Melbourne, VIC 3000, Australia.
| | - Brendan P Dyett
- School of Science, STEM College, RMIT University, Melbourne, VIC 3000, Australia.
| | - Xudong Cai
- School of Science, STEM College, RMIT University, Melbourne, VIC 3000, Australia.
| | - Miaosi Li
- School of Engineering, STEM College, RMIT University, Melbourne, VIC 3000, Australia.
| | - Zeyad Nasa
- Micro Nano Research Facility, RMIT University, Melbourne, VIC 3000, Australia
| | - Calum J Drummond
- School of Science, STEM College, RMIT University, Melbourne, VIC 3000, Australia.
| |
Collapse
|
9
|
Progress and challenges of lyotropic liquid crystalline nanoparticles for innovative therapies. Int J Pharm 2022; 628:122299. [DOI: 10.1016/j.ijpharm.2022.122299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 10/07/2022] [Accepted: 10/10/2022] [Indexed: 11/22/2022]
|
10
|
Rajesh S, Leiske MN, Leitch V, Zhai J, Drummond CJ, Kempe K, Tran N. Lipidic poly(2-oxazoline)s as PEG replacement steric stabilisers for cubosomes. J Colloid Interface Sci 2022. [DOI: 10.1016/j.jcis.2022.04.158
expr 856459513 + 838290945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
|
11
|
|
12
|
Inverse ISAsomes in Bio-Compatible Oils—Exploring Formulations in Squalane, Triolein and Olive Oil. NANOMATERIALS 2022; 12:nano12071133. [PMID: 35407249 PMCID: PMC9000821 DOI: 10.3390/nano12071133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 03/26/2022] [Accepted: 03/28/2022] [Indexed: 11/17/2022]
Abstract
In contrast to their more common counterparts in aqueous solutions, inverse ISAsomes (internally self-assembled somes/particles) are formulated as kinetically stabilised dispersions of hydrophilic, lyotropic liquid-crystalline (LC) phases in non-polar oils. This contribution reports on their formation in bio-compatible oils. We found that it is possible to create inverse hexosomes, inverse micellar cubosomes (Fd3m) and an inverse emulsified microemulsion (EME) in excess squalane with a polyethylene glycol alkyl ether as the primary surfactant forming the LC phase and to stabilise them with hydrophobised silica nanoparticles. Furthermore, an emulsified -phase and inverse hexosomes were formed in excess triolein with the triblock-copolymer Pluronic® P94 as the primary surfactant. Stabilisation was achieved with a molecular stabiliser of type polyethylene glycol (PEG)-dipolyhydroxystearate. For the inverse hexosomes in triolein, the possibility of a formulation without any additional stabiliser was explored. It was found that a sufficiently strong stabilisation effect was created by the primary surfactant alone. Finally, triolein was replaced with olive oil which also led to the successful formation of inverse hexosomes. As far as we know, there exists no previous contribution about inverse ISAsomes in complex oils such as triolein or plant oils, and the existence of stabiliser-free (i.e., self-stabilising) inverse hexosomes has also not been reported until now.
Collapse
|
13
|
Fan B, Wan J, Zhai J, Teo NKS, Huynh A, Thang SH. Photoluminescent polymer cubosomes prepared by RAFT-mediated polymerization-induced self-assembly. Polym Chem 2022. [DOI: 10.1039/d2py00701k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The preparation of photoluminescent polymer assemblies with a wide range of morphologies, including spongosomes and cubosomes, via an efficient RAFT-mediated polymerization-induced self-assembly (RAFT-PISA) process, was demonstrated.
Collapse
Affiliation(s)
- Bo Fan
- School of Chemistry, Monash University, Clayton, VIC 3800, Australia
- ARC Centre of Excellence for Enabling Eco-Efficient Beneficiation of Minerals, Monash Node, VIC 3800, Australia
| | - Jing Wan
- School of Chemistry, Monash University, Clayton, VIC 3800, Australia
| | - Jiali Zhai
- School of Science, STEM College, RMIT University, Melbourne, VIC 3000, Australia
| | | | - Andy Huynh
- School of Chemistry, Monash University, Clayton, VIC 3800, Australia
| | - San H. Thang
- School of Chemistry, Monash University, Clayton, VIC 3800, Australia
- ARC Centre of Excellence for Enabling Eco-Efficient Beneficiation of Minerals, Monash Node, VIC 3800, Australia
| |
Collapse
|