1
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Fornasier M, Krautforst K, Kulbacka J, Jönsson P, Murgia S, Bazylińska U. Cubosomes and hexosomes stabilized by sorbitan monooleate as biocompatible nanoplatforms against skin metastatic human melanoma. J Colloid Interface Sci 2024; 677:842-852. [PMID: 39173516 DOI: 10.1016/j.jcis.2024.08.126] [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: 05/28/2024] [Revised: 08/08/2024] [Accepted: 08/16/2024] [Indexed: 08/24/2024]
Abstract
Nanoparticles have become versatile assets in the medical field, providing notable benefits across diverse medical arenas including controlled drug delivery, imaging, and immunological assays. Among these, non-lamellar lipid nanoparticles, notably cubosomes and hexosomes, showcase remarkable biocompatibility and stability, rendering them as optimal choices for theranostic applications. Particularly, incorporating edge activators like sodium taurocholate enhances the potential of these nanoparticles for dermal and transdermal drug delivery, overcoming the stratum corneum, a first line of defense in our skin. This study reports on the formulation of monoolein-based cubosomes and hexosomes incorporating taurocholate and stabilized by Span 80 and co-encapsulating Chlorin e6 and coenzyme QH for photodynamic therapy in skin metastatic melanoma. The formulations were optimized using small-angle X-ray scattering, and cryo-transmission electron microscopy confirmed the presence of cubosomes or hexosomes, depending on the ratio between taurocholate and Span 80. Furthermore, the co-loaded nanoparticles exhibited high encapsulation efficiencies for both Ce6 and the coenzyme QH. In vitro studies on human melanoma cells (Me45) demonstrated the biocompatibility and photodynamic activity of the loaded formulations. These findings show the possibility of formulating more biocompatible cubosomes and hexosomes for photodynamic therapy in skin cancer treatment.
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Affiliation(s)
- Marco Fornasier
- Department of Chemistry, Lund University, SE-22100 Lund, Sweden.
| | - Karolina Krautforst
- Department of Chemical and Geological Sciences, University of Cagliari, s.s. 554 bivio Sestu, I-09042 Monserrato, CA, Italy; Department of Physical and Quantum Chemistry, Faculty of Chemistry, Wroclaw University, University of Science and Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland; CSGI, Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, 50019 Sesto Fiorentino, FI, Italy
| | - Julita Kulbacka
- Department of Molecular and Cellular Biology, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211 A, 50-556 Wroclaw, Poland; Department of Immunology and Bioelectrochemistry, State Research Institute Centre for Innovative Medicine, Santariškių 5, 08410 Vilnius, Lithuania
| | - Peter Jönsson
- Department of Chemistry, Lund University, SE-22100 Lund, Sweden
| | - Sergio Murgia
- CSGI, Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, 50019 Sesto Fiorentino, FI, Italy; Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria Monserrato, S.P. 8 Km 0.700, 09042 Monserrato, CA, Italy
| | - Urszula Bazylińska
- Department of Physical and Quantum Chemistry, Faculty of Chemistry, Wroclaw University, University of Science and Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland.
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2
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Blanco-Fernández G, Blanco-Fernandez B, Fernández-Ferreiro A, Otero-Espinar FJ. Lipidic lyotropic liquid crystals: Insights on biomedical applications. Adv Colloid Interface Sci 2023; 313:102867. [PMID: 36889183 DOI: 10.1016/j.cis.2023.102867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 02/26/2023] [Accepted: 02/26/2023] [Indexed: 03/04/2023]
Abstract
Liquid crystals (LCs) possess unique physicochemical properties, translatable into a wide range of applications. To date, lipidic lyotropic LCs (LLCs) have been extensively explored in drug delivery and imaging owing to the capability to encapsulate and release payloads with different characteristics. The current landscape of lipidic LLCs in biomedical applications is provided in this review. Initially, the main properties, types, methods of fabrication and applications of LCs are showcased. Then, a comprehensive discussion of the main biomedical applications of lipidic LLCs accordingly to the application (drug and biomacromolecule delivery, tissue engineering and molecular imaging) and route of administration is examined. Further discussion of the main limitations and perspectives of lipidic LLCs in biomedical applications are also provided. STATEMENT OF SIGNIFICANCE: Liquid crystals (LCs) are those systems between a solid and liquid state that possess unique morphological and physicochemical properties, translatable into a wide range of biomedical applications. A short description of the properties of LCs, their types and manufacturing procedures is given to serve as a background to the topic. Then, the latest and most innovative research in the field of biomedicine is examined, specifically the areas of drug and biomacromolecule delivery, tissue engineering and molecular imaging. Finally, prospects of LCs in biomedicine are discussed to show future trends and perspectives that might be utilized. This article is an ampliation, improvement and actualization of our previous short forum article "Bringing lipidic lyotropic liquid crystal technology into biomedicine" published in TIPS.
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Affiliation(s)
- Guillermo Blanco-Fernández
- 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
| | - Bárbara 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 J 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.
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3
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Thorn CR, Wignall A, Kopecki Z, Kral A, Prestidge CA, Thomas N. Liquid Crystal Nanoparticles Enhance Tobramycin Efficacy in a Murine Model of Pseudomonas aeruginosa Biofilm Wound Infection. ACS Infect Dis 2022; 8:841-854. [PMID: 35255215 DOI: 10.1021/acsinfecdis.1c00606] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Chronic Pseudomonas aeruginosa wound infections are highly prevalent and often untreatable due to biofilm formation, resulting in high antimicrobial tolerance. Standard antibiotic therapy for P. aeruginosa infections involves tobramycin, yet it is highly ineffective as monotherapy as tobramycin cannot penetrate the biofilm to elicit its antimicrobial effect. Lipid liquid crystal nanoparticles (LCNPs) have previously been shown to increase the antimicrobial efficacy and penetration of tobramycin against P. aeruginosa biofilms in vitro and ex vivo. Here, for the first time, we have developed a chronic P. aeruginosa biofilm infection in full-thickness wounds in mice to examine the potential of LCNPs to improve the effect of tobramycin, preclinically. After three doses, administered once a day, tobramycin-LCNPs significantly reduced the P. aeruginosa bacterial load in murine wounds 1000-fold more than unformulated tobramycin, which in turn showed no significant difference to the saline control treatment. Consistent with the improved P. aeruginosa eradication, the tobramycin-LCNPs promoted wound healing. In comparison to previous in vitro and ex vivo data, we show a strong in vitro-in vivo correlation between P. aeruginosa biofilm infection models. The enhanced activity of tobramycin-LCNPs in vivo in the preclinical murine model demonstrates the strong potential of LCNPs as a next-generation formulation approach to improve the efficacy of tobramycin against P. aeruginosa biofilm wound infections.
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Affiliation(s)
- Chelsea R. Thorn
- University of South Australia, Clinical and Health Science, North Tce, Adelaide, SA 5000, Australia
- The Basil Hetzel Institute for Translational Health Research, Woodville, SA 5011, Australia
- Biofilm Test Facility, Cancer Research Institute, University of South Australia, North Tce, Adelaide, SA 5000, Australia
| | - Anthony Wignall
- University of South Australia, Clinical and Health Science, North Tce, Adelaide, SA 5000, Australia
| | - Zlatko Kopecki
- University of South Australia, Clinical and Health Science, North Tce, Adelaide, SA 5000, Australia
- Future Industries Institute, UniSA, Mawson Lakes, SA 5095, Australia
| | - Anita Kral
- University of South Australia, Clinical and Health Science, North Tce, Adelaide, SA 5000, Australia
- Centre for Cancer Biology, S.A. Pathology and University of South Australia, Adelaide, SA 5000, Australia
| | - Clive A. Prestidge
- University of South Australia, Clinical and Health Science, North Tce, Adelaide, SA 5000, Australia
| | - Nicky Thomas
- University of South Australia, Clinical and Health Science, North Tce, Adelaide, SA 5000, Australia
- The Basil Hetzel Institute for Translational Health Research, Woodville, SA 5011, Australia
- Biofilm Test Facility, Cancer Research Institute, University of South Australia, North Tce, Adelaide, SA 5000, Australia
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4
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Mohammad Y, Prentice RN, Boyd BJ, Rizwan SB. Comparison of cubosomes and hexosomes for the delivery of phenytoin to the brain. J Colloid Interface Sci 2021; 605:146-154. [PMID: 34311309 DOI: 10.1016/j.jcis.2021.07.070] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 07/08/2021] [Accepted: 07/09/2021] [Indexed: 10/20/2022]
Abstract
The ability to formulate cubosomes and hexosomes with a single lipid by changing only the colloidal stabiliser presents a unique opportunity to directly compare the biological performance of these uniquely structured nanoparticles. This was explored here via the encapsulation and brain delivery of a model anti-seizure drug, phenytoin, in selachyl alcohol cubosomes and hexosomes. Nanoparticles were prepared with Pluronic® F127 or Tween 80® as the stabiliser and characterised. The internal nanostructure of nanoparticles shifted from hexosomes when using Pluronic® F127 as the stabiliser to cubosomes when using Tween 80® and was conserved following loading of phenytoin, with high encapsulation efficiencies (>97%) in both particle type. Cytotoxicity towards brain endothelial cells using the hCMEC/D3 line was comparable regardless of stabiliser type. Finally, in vivo brain delivery of phenytoin encapsulated in cubosomes and hexosomes after intravenous administration to rats was studied over a period of 60 min, showing cubosomes to be superior to hexosomes, both in terms of brain concentrations and brain to plasma ratio. While the role of stabiliser and/or internal nanostructure remains to be conclusively determined, this study is the first in vivo comparison of cubosomes and hexosomes for the delivery of a therapeutic drug molecule across the BBB and into the brain.
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Affiliation(s)
- Younus Mohammad
- School of Pharmacy, University of Otago, Dunedin, New Zealand
| | | | - 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, VIC 3052, Australia
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5
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Pham AC, Clulow AJ, Boyd BJ. Formation of Self-Assembled Mesophases During Lipid Digestion. Front Cell Dev Biol 2021; 9:657886. [PMID: 34178984 PMCID: PMC8231029 DOI: 10.3389/fcell.2021.657886] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Accepted: 05/05/2021] [Indexed: 11/27/2022] Open
Abstract
Lipids play an important role in regulating bodily functions and providing a source of energy. Lipids enter the body primarily in the form of triglycerides in our diet. The gastrointestinal digestion of certain types of lipids has been shown to promote the self-assembly of lipid digestion products into highly ordered colloidal structures. The formation of these ordered colloidal structures, which often possess well-recognized liquid crystalline morphologies (or “mesophases”), is currently understood to impact the way nutrients are transported in the gut and absorbed. The formation of these liquid crystalline structures has also been of interest within the field of drug delivery, as it enables the encapsulation or solubilization of poorly water-soluble drugs in the aqueous environment of the gut enabling a means of absorption. This review summarizes the evidence for structure formation during the digestion of different lipid systems associated with foods, the techniques used to characterize them and provides areas of focus for advancing our understanding of this emerging field.
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Affiliation(s)
- Anna C Pham
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia
| | - Andrew J Clulow
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia
| | - Ben J Boyd
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia
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6
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Salvati Manni L, Duss M, Assenza S, Boyd BJ, Landau EM, Fong WK. Enzymatic hydrolysis of monoacylglycerols and their cyclopropanated derivatives: Molecular structure and nanostructure determine the rate of digestion. J Colloid Interface Sci 2021; 588:767-775. [PMID: 33309146 DOI: 10.1016/j.jcis.2020.11.110] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 11/16/2020] [Accepted: 11/26/2020] [Indexed: 12/31/2022]
Abstract
Colloidal lipidic particles with different space groups and geometries (mesosomes) are employed in the development of new nanosystems for the oral delivery of drugs and nutrients. Understanding of the enzymatic digestion rate of these particles is key to the development of novel formulations. In this work, the molecular structure of the lipids has been systematically tuned to examine the effect on their self-assembly and digestion rate. The kinetic and phase changes during the lipase-catalysed hydrolysis of mesosomes formed by four synthetic cyclopropanated lipids and their cis-unsaturated analogues were monitored by dynamic small angle X-ray scattering and acid/base titration. It was established that both the phase behaviour and kinetics of the hydrolysis are greatly affected by small changes in the molecular structure of the lipid as well as by the internal nanostructure of the colloidal particles.
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Affiliation(s)
- Livia Salvati Manni
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland; School of Chemistry and University of Sydney Nano Institute, The University of Sydney, NSW 2006, Australia.
| | - Michael Duss
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland; Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC, Canada
| | - Salvatore Assenza
- Departamento de Física Teórica de la Materia Condensada, Universidad Autónoma de Madrid, E-28049 Madrid, Spain; Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, E-28049 Madrid, Spain
| | - 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, VIC 3052, Australia
| | - Ehud M Landau
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland.
| | - Wye-Khay Fong
- Discipline of Chemistry, School of Environmental and Life Sciences, University of Newcastle, Callaghan 2308, NSW, Australia.
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7
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Thorn CR, Thomas N, Boyd BJ, Prestidge CA. Nano-fats for bugs: the benefits of lipid nanoparticles for antimicrobial therapy. Drug Deliv Transl Res 2021; 11:1598-1624. [PMID: 33675007 DOI: 10.1007/s13346-021-00921-w] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/20/2021] [Indexed: 12/24/2022]
Abstract
Bacterial infections are an imminent global healthcare threat evolving from rapidly advancing bacterial defence mechanisms that antibiotics fail to overcome. Antibiotics have been designed for systemic administration to target planktonic bacteria, leading to difficulties in reaching the site of localized bacterial infection and an inability to overcome the biological, chemical and physical barriers of bacteria, including biofilms, intracellular infections and antimicrobial resistance. The amphiphilic, biomimetic and antimicrobial properties of lipids provide a promising toolbox to innovate and advance antimicrobial therapies, overcoming the barriers presented by bacteria in order to directly and effectively treat recalcitrant infections. Nanoparticulate lipid-based drug delivery systems can enhance antibiotic permeation through the chemical and physical barriers of bacterial infections, as well as fuse with bacterial cell membranes, release antibiotics in response to bacteria and act synergistically with loaded antibiotics to enhance the total antimicrobial efficacy. This review explores the barriers presented by bacterial infections that pose bio-pharmaceutical challenges to antibiotics and how different structural and functional mechanisms of lipids can enhance antimicrobial therapies. Different nanoparticulate lipid-based systems are presented as valuable drug delivery systems to advance the efficacy of antibiotics, including liposomes, liquid crystalline nanoparticles, solid lipid nanoparticles, nanostructured lipid carriers and lipid nanocarriers. In summary, liquid crystalline nanoparticles are emerging with the greatest potential for clinical applications and commercial success as an "all-rounder" advanced lipid-based antimicrobial therapy that overcomes the multiple biological, chemical and physical barriers of bacteria.
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Affiliation(s)
- Chelsea R Thorn
- Clinical and Health Science, University of South Australia, City East Campus, Adelaide, SA, 5000, Australia.,The Basil Hetzel Institute for Translational Health Research, Woodville, SA, 5011, Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, University of South Australia, SA, 5000, Adelaide, Australia
| | - Nicky Thomas
- Clinical and Health Science, University of South Australia, City East Campus, Adelaide, SA, 5000, Australia.,The Basil Hetzel Institute for Translational Health Research, Woodville, SA, 5011, Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, University of South Australia, SA, 5000, Adelaide, Australia
| | - Ben J Boyd
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, University of South Australia, SA, 5000, Adelaide, Australia.,Drug Delivery Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Pde, Parkville, VIC, 3052, Australia
| | - Clive A Prestidge
- Clinical and Health Science, University of South Australia, City East Campus, Adelaide, SA, 5000, Australia. .,ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, University of South Australia, SA, 5000, Adelaide, Australia.
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8
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Zhang X, Wu W. Liquid Crystalline Phases for Enhancement of Oral Bioavailability. AAPS PharmSciTech 2021; 22:81. [PMID: 33619612 DOI: 10.1208/s12249-021-01951-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 02/03/2021] [Indexed: 12/21/2022] Open
Abstract
Liquid crystalline phases (LCPs) are generated upon lipolysis of ingested lipids in the gastrointestinal tract. The breaking off and subsequent evolution of LCPs produce more advanced vesicular and micellar structures which facilitate oral absorption of lipids, as well as co-loaded drug entities. Owing to sustained or controlled drug release, bioadhesiveness, and capability of loading drugs of different properties, LCPs are promising vehicles to implement for enhancement of oral bioavailability. This review aims to provide an overview on the classification, preparation and characterization, in vivo generation and transformation, absorption mechanisms, and encouraging applications of LCPs in enhancement of oral bioavailability. In addition, we comment on the merits of LCPs as oral drug delivery carriers, as well as solutions to industrialization utilizing liquid crystalline precursor and preconcentrate formulations.
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9
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Kawai M, Ibaraki H, Takashima Y, Kanazawa T, Okada H. Development of a Liquid Crystal Formulation that Can Penetrate the Stratum Corneum for Intradermal Delivery of Small Interfering RNA. Mol Pharm 2021; 18:1038-1047. [PMID: 33395310 DOI: 10.1021/acs.molpharmaceut.0c00997] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Topical delivery of small interfering RNA (siRNA) can be an attractive method for the treatment of skin diseases and improving the quality of life of patients. However, it is difficult for siRNA to pass through the two major barriers of the skin: the stratum corneum (SC) and tight junctions. We have previously reported that atopic dermatitis of skin without the SC can be efficiently treated by the intradermal administration of trans-activator of transcription (Tat) peptide and AT1002 (tight junction opening peptide). However, novel drug delivery systems are needed for effective SC penetration. Therefore, in the present study, we aimed to develop a lyotropic liquid crystalline (LC) system containing Tat and AT1002 for effective siRNA penetration through the SC. An LC formulation was prepared using selachyl alcohol and purified water, and its skin penetration ability was evaluated. No fluorescence was observed in mouse skin treated with a siRNA solution, as there was no intradermal localization of siRNA from naked siRNA. However, intradermal delivery of siRNA was remarkable and extensive with the LC formulation containing both Tat and AT1002. Semiquantitative analysis by brightness measurement revealed that the LC formulation containing both Tat and AT1002 had significantly enhanced intact skin permeability than other formulations. These results show that the functional peptides in the LC formulation increased SC penetration and intradermal delivery in the healthy skin. Therefore, this novel LC system may be useful in the treatment of various skin diseases.
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Affiliation(s)
- Misako Kawai
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Hisako Ibaraki
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Yuuki Takashima
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Takanori Kanazawa
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan.,School of Pharmaceutical Sciences, University of Shizuoka 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Hiroaki Okada
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
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11
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Sustained absorption of delamanid from lipid-based formulations as a path to reduced frequency of administration. Drug Deliv Transl Res 2020; 11:1236-1244. [PMID: 32935235 PMCID: PMC8096769 DOI: 10.1007/s13346-020-00851-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/01/2020] [Indexed: 11/18/2022]
Abstract
Delamanid is a poorly water-soluble drug currently being used for the treatment of tuberculosis. The high frequency of dosing leads to poor adherence for patients who live in lower economic and nomadic populations. Non-digestible self-assembling lipids as a formulation approach for poorly water-soluble drugs have previously been shown to extend the window of absorption through gastric retention. We hypothesise that this approach could lead to the reduction of dosing frequency for delamanid and thereby has potential to improve adherence. Formulations of delamanid were prepared in selachyl alcohol and phytantriol as non-digestible self-assembling lipid vehicles, and their behaviour was compared with reconstituted milk powder, as a digestible lipid-based formulation, and an aqueous suspension. The self-assembly of selachyl alcohol and phytantriol in aqueous media in the presence of delamanid was studied using small angle X-ray scattering and produced the inverse hexagonal (H2) and inverse bicontinuous cubic (V2) liquid crystal structures, respectively. The times at which maximum delamanid levels in plasma were observed (Tmax) after oral administration of the phytantriol, selachyl alcohol and reconstituted milk powder formulations of delamanid to rats were 27 ± 3, 20 ± 4 and 6.5 ± 1.0 h, respectively, compared with the aqueous suspension formulation with a Tmax of 3.4 ± 1 h, which confirms the hypothesis of an extended duration of absorption after administration in non-digestible self-assembling lipids. The digestion products of the triglycerides in the milk formulation increased the solubilisation of delamanid in the gastrointestinal tract, leading to an increase in exposure compared with the aqueous suspension formulation but did not significantly extend Tmax. Overall, the non-digestible nanostructured lipid formulations extended the duration of absorption of delamanid well beyond that from milk or suspension formulations. Graphical abstract ![]()
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12
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Pham AC, Peng KY, Salim M, Ramirez G, Hawley A, Clulow AJ, Boyd BJ. Correlating Digestion-Driven Self-Assembly in Milk and Infant Formulas with Changes in Lipid Composition. ACS APPLIED BIO MATERIALS 2020; 3:3087-3098. [PMID: 32455340 PMCID: PMC7241073 DOI: 10.1021/acsabm.0c00131] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 04/16/2020] [Indexed: 11/29/2022]
Abstract
![]()
Lipids in mammalian
milks such as bovine milk and human breast
milk have been shown to self-assemble into various liquid crystalline
materials during digestion. In this study, the direct correlation
between the composition of the lipids from three types of mammalian
milk, three brands of infant formulas (IFs), and soy milk and the
liquid crystalline structures that form during their digestion was
investigated to link the material properties to the composition. The
self-assembly behavior was assessed using in vitro digestion coupled with in situ small-angle X-ray
scattering (SAXS). Lipid composition was determined during in vitro digestion using ex situ liquid
chromatography–mass spectrometry. All tested milks self-assembled
into ordered structures during digestion, with the majority of milks
displaying nonlamellar phases. Milks that released mostly long-chain
fatty acids (>95 mol % of the top 10 fatty acids released) with
more
than 47 mol % unsaturation predominantly formed a micellar cubic phase
during digestion. Other milks released relatively more medium-chain
fatty acids and medium-chain monoglycerides and produced a range of
ordered liquid crystalline structures including the micellar cubic
phase, the hexagonal phase, and the bicontinuous cubic phase. One
infant formula did not form liquid crystalline structures at all as
a consequence of differences in fatty acid distributions. The self-assembly
phenomenon provides a powerful discriminator between different classes
of nutrition and a roadmap for the design of human milklike systems
and is anticipated to have important implications for nutrient transport
and the delivery of bioactives.
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Affiliation(s)
- Anna C Pham
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Parkville, VIC 3052, Australia
| | - Kang-Yu Peng
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Parkville, VIC 3052, Australia
| | - Malinda Salim
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Parkville, VIC 3052, Australia
| | - Gisela Ramirez
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Parkville, VIC 3052, Australia
| | - Adrian Hawley
- SAXS/WAXS Beamline, Australian Synchrotron, ANSTO, Clayton, VIC 3168, Australia
| | - Andrew J Clulow
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Parkville, VIC 3052, Australia
| | - Ben J Boyd
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Parkville, VIC 3052, Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Parkville, VIC 3052, Australia
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13
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Salvati Manni L, Assenza S, Duss M, Vallooran JJ, Juranyi F, Jurt S, Zerbe O, Landau EM, Mezzenga R. Soft biomimetic nanoconfinement promotes amorphous water over ice. NATURE NANOTECHNOLOGY 2019; 14:609-615. [PMID: 30962546 DOI: 10.1038/s41565-019-0415-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 02/26/2019] [Indexed: 06/09/2023]
Abstract
Water is a ubiquitous liquid with unique physicochemical properties, whose nature has shaped our planet and life as we know it. Water in restricted geometries has different properties than in bulk. Confinement can prevent low-temperature crystallization of the molecules into a hexagonal structure and thus create a state of amorphous water. To understand the survival of life at subzero temperatures, it is essential to elucidate this behaviour in the presence of nanoconfining lipidic membranes. Here we introduce a family of synthetic lipids with designed cyclopropyl modifications in the hydrophobic chains that exhibit unique liquid-crystalline behaviour at low temperature, which enables the maintenance of amorphous water down to ~10 K due to nanoconfinement. The combination of experiments and molecular dynamics simulations unveils a complex lipid-water phase diagram in which bicontinuous cubic and lamellar liquid crystalline phases that contain subzero liquid, glassy or ice water emerge as a competition between the two components, each pushing towards its thermodynamically favoured state.
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Affiliation(s)
- Livia Salvati Manni
- Department of Chemistry, University of Zürich, Zürich, Switzerland
- Department of Health Sciences & Technology, ETH Zürich, Zürich, Switzerland
| | - Salvatore Assenza
- Department of Health Sciences & Technology, ETH Zürich, Zürich, Switzerland
| | - Michael Duss
- Department of Chemistry, University of Zürich, Zürich, Switzerland
| | - Jijo J Vallooran
- Department of Chemistry, University of Zürich, Zürich, Switzerland
- Department of Health Sciences & Technology, ETH Zürich, Zürich, Switzerland
| | - Fanni Juranyi
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, Villigen, Switzerland
| | - Simon Jurt
- Department of Chemistry, University of Zürich, Zürich, Switzerland
| | - Oliver Zerbe
- Department of Chemistry, University of Zürich, Zürich, Switzerland
| | - Ehud M Landau
- Department of Chemistry, University of Zürich, Zürich, Switzerland.
| | - Raffaele Mezzenga
- Department of Health Sciences & Technology, ETH Zürich, Zürich, Switzerland.
- Department of Materials, ETH Zürich, Zürich, Switzerland.
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14
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Tan A, Hong L, Du JD, Boyd BJ. Self-Assembled Nanostructured Lipid Systems: Is There a Link between Structure and Cytotoxicity? ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1801223. [PMID: 30775224 PMCID: PMC6364503 DOI: 10.1002/advs.201801223] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Revised: 10/05/2018] [Indexed: 05/20/2023]
Abstract
Self-assembly of lipid-based liquid crystalline (LLC) nanoparticles is a formulation art arising from the hydrophilic-lipophilic qualities and the geometric packing of amphiphilic lipid molecules in an aqueous environment. The diversity of commercialized amphiphilic lipids and an increased understanding of the physicochemical factors dictating their membrane curvature has enabled versatile architectural design and engineering of LLC nanoparticles. While these exotic nanostructured materials are hypothesized to form the next generation of smart therapeutics for a broad field of biomedical applications, biological knowledge particularly on the systemic biocompatibility or cytotoxicity of LLC materials remains unclear. Here, an overview on the interactions between LLCs of different internal nanostructures and biological components (including soluble plasma constituents, blood cells, and isolated tissue cell lines) is provided. Factors affecting cell-nanoparticle tolerability such as the type of lipids, type of steric stabilizers, nanoparticle surface charges, and internal nanostructures (or lipid phase behaviors) are elucidated. The mechanisms of cellular uptake and lipid transfer between neighboring membrane domains are also reviewed. A critical analysis of these studies sheds light on future strategies to transform LLC materials into a viable therapeutic entity ideal for internal applications.
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Affiliation(s)
- Angel Tan
- ARC Centre of Excellence in Convergent Bio‐Nano Science and TechnologyDrug Delivery, Disposition and DynamicsMonash Institute of Pharmaceutical SciencesMonash University, Parkville Campus381 Royal ParadeParkvilleVIC3052Australia
| | - Linda Hong
- ARC Centre of Excellence in Convergent Bio‐Nano Science and TechnologyDrug Delivery, Disposition and DynamicsMonash Institute of Pharmaceutical SciencesMonash University, Parkville Campus381 Royal ParadeParkvilleVIC3052Australia
| | - Joanne D. Du
- ARC Centre of Excellence in Convergent Bio‐Nano Science and TechnologyDrug Delivery, Disposition and DynamicsMonash Institute of Pharmaceutical SciencesMonash University, Parkville Campus381 Royal ParadeParkvilleVIC3052Australia
| | - Ben J. Boyd
- ARC Centre of Excellence in Convergent Bio‐Nano Science and TechnologyDrug Delivery, Disposition and DynamicsMonash Institute of Pharmaceutical SciencesMonash University, Parkville Campus381 Royal ParadeParkvilleVIC3052Australia
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15
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16
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Younus M, Hawley A, Boyd BJ, Rizwan SB. Bulk and dispersed aqueous behaviour of an endogenous lipid, selachyl alcohol: Effect of Tween 80 and Pluronic F127 on nanostructure. Colloids Surf B Biointerfaces 2018; 169:135-142. [DOI: 10.1016/j.colsurfb.2018.05.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Revised: 05/03/2018] [Accepted: 05/06/2018] [Indexed: 11/24/2022]
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17
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Musa MN, David SR, Zulkipli IN, Mahadi AH, Chakravarthi S, Rajabalaya R. Development and evaluation of exemestane-loaded lyotropic liquid crystalline gel formulations. ACTA ACUST UNITED AC 2018; 7:227-239. [PMID: 29435430 PMCID: PMC5801534 DOI: 10.15171/bi.2017.27] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Revised: 08/30/2017] [Accepted: 08/31/2017] [Indexed: 01/03/2023]
Abstract
Introduction: The use of liquid crystalline (LC) gel formulations for drug delivery has considerably improved the current delivery methods in terms of bioavailability and efficacy. The purpose of this study was to develop and evaluate LC gel formulations to deliver the anti-cancer drug exemestane through transdermal route. Methods: Two LC gel formulations were prepared by phase separation coacervation method using glyceryl monooleate (GMO), Tween 80 and Pluronic® F127 (F127). The formulations were characterized with regard to encapsulation efficiency (EE), vesicle size, Fourier transform infrared (FTIR) spectroscopy, surface morphology (using light and fluorescence microscopy), in vitro release, ex vivo permeation, in vitro effectiveness test on MDA-MB231 cancer cell lines and histopathological analysis. Results: Results exhibited that the EE was 85%-92%, vesicle size was 119.9-466.2 nm while morphology showed spherical vesicles after hydration. An FTIR result also revealed that there was no significant shift in peaks corresponding to Exemestane and excipients. LC formulations release the drug from cellulose acetate and Strat-MTM membrane from 15%-88.95%, whereas ex vivo permeation ranges from 37.09-63%. The in vitro effectiveness study indicated that even at low exemestane concentrations (12.5 and 25 μg/mL) the formulations were able to induce cancer cell death, regardless of the surfactant used. Histopathological analysis thinning of the epidermis as the formulations penetrate into the intercellular regions of squamous cells. Conclusion: The results conjectured that exemestane could be incorporated into LC gels for the transdermal delivery system and further preclinical studies such as pharmacokinetic and pharmacodynamic studies will be carried out with suitable animal models.
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Affiliation(s)
- Muhammad Nuh Musa
- PAPRSB Institute of Health Sciences, Universiti Brunei Darussalam, Bandar Seri Begawan BE 1410, Brunei Darussalam
| | - Sheba Rani David
- PAPRSB Institute of Health Sciences, Universiti Brunei Darussalam, Bandar Seri Begawan BE 1410, Brunei Darussalam
| | - Ihsan Nazurah Zulkipli
- PAPRSB Institute of Health Sciences, Universiti Brunei Darussalam, Bandar Seri Begawan BE 1410, Brunei Darussalam
| | - Abdul Hanif Mahadi
- Centre for Advanced Material and Energy Sciences (CAMES), Universiti Brunei Darussalam, Bandar Seri Begawan BE 1410, Brunei Darussalam
| | - Srikumar Chakravarthi
- School of Medicine, Perdana University, Jalan MAEPS Perdana, 43400 Serdang, Selangor, Malaysia
| | - Rajan Rajabalaya
- PAPRSB Institute of Health Sciences, Universiti Brunei Darussalam, Bandar Seri Begawan BE 1410, Brunei Darussalam
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18
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Rajabalaya R, Musa MN, Kifli N, David SR. Oral and transdermal drug delivery systems: role of lipid-based lyotropic liquid crystals. DRUG DESIGN DEVELOPMENT AND THERAPY 2017; 11:393-406. [PMID: 28243062 PMCID: PMC5315216 DOI: 10.2147/dddt.s103505] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Liquid crystal (LC) dosage forms, particularly those using lipid-based lyotropic LCs (LLCs), have generated considerable interest as potential drug delivery systems. LCs have the physical properties of liquids but retain some of the structural characteristics of crystalline solids. They are compatible with hydrophobic and hydrophilic compounds of many different classes and can protect even biologicals and nucleic acids from degradation. This review, focused on research conducted over the past 5 years, discusses the structural evaluation of LCs and their effects in drug formulations. The structural classification of LLCs into lamellar, hexagonal and micellar cubic phases is described. The structures of these phases are influenced by the addition of surfactants, which include a variety of nontoxic, biodegradable lipids; these also enhance drug solubility. LLC structure influences drug localization, particle size and viscosity, which, in turn, determine drug delivery properties. Through several specific examples, we describe the applications of LLCs in oral and topical drug formulations, the latter including transdermal and ocular delivery. In oral LLC formulations, micelle compositions and the resulting LLC structures can determine drug solubilization and stability as well as intestinal transport and absorption. Similarly, in topical LLC formulations, composition can influence whether the drug is retained in the skin or delivered transdermally. Owing to their enhancement of drug stability and promotion of controlled drug delivery, LLCs are becoming increasingly popular in pharmaceutical formulations.
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Affiliation(s)
- Rajan Rajabalaya
- PAPRSB Institute of Health Sciences, Universiti Brunei Darussalam, Brunei Darussalam
| | - Muhammad Nuh Musa
- PAPRSB Institute of Health Sciences, Universiti Brunei Darussalam, Brunei Darussalam
| | - Nurolaini Kifli
- PAPRSB Institute of Health Sciences, Universiti Brunei Darussalam, Brunei Darussalam
| | - Sheba R David
- PAPRSB Institute of Health Sciences, Universiti Brunei Darussalam, Brunei Darussalam
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19
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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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20
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Pham AC, Hong L, Montagnat O, Nowell CJ, Nguyen TH, Boyd BJ. In Vivo Formation of Cubic Phase in Situ after Oral Administration of Cubic Phase Precursor Formulation Provides Long Duration Gastric Retention and Absorption for Poorly Water-Soluble Drugs. Mol Pharm 2015; 13:280-6. [DOI: 10.1021/acs.molpharmaceut.5b00784] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Anna C. Pham
- Drug
Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical
Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Linda Hong
- Drug
Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical
Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology,
Monash Institute of Pharmaceutical Sciences, Monash University, 381
Royal Parade, Parkville, Victoria 3052, Australia
| | - Oliver Montagnat
- Drug
Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical
Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Cameron J. Nowell
- Drug
Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Tri-Hung Nguyen
- Drug
Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical
Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Ben J. Boyd
- Drug
Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical
Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology,
Monash Institute of Pharmaceutical Sciences, Monash University, 381
Royal Parade, Parkville, Victoria 3052, Australia
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21
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Pham AC, Nguyen TH, Nowell CJ, Graham B, Boyd BJ. Examining the gastrointestinal transit of lipid-based liquid crystalline systems using whole-animal imaging. Drug Deliv Transl Res 2015; 5:566-74. [DOI: 10.1007/s13346-015-0253-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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An injectable liquid crystal system for sustained delivery of entecavir. Int J Pharm 2015; 490:265-72. [PMID: 26004002 DOI: 10.1016/j.ijpharm.2015.05.049] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 04/28/2015] [Accepted: 05/17/2015] [Indexed: 10/23/2022]
Abstract
Liquid crystal (LC) technology has attracted much interest for new injectable sustained-release (SR) formulations. In this study, an injectable liquid crystal-forming system (LCFS) including entecavir was prepared for the treatment of hepatitis B. In particular, an anchoring effect was introduced because LCFSs are relatively hydrophobic while entecavir is a slightly charged drug. The physicochemical properties of LCFSs were investigated by cryo-transmission electron microscopy (cryo-TEM), polarized optical microscopy, and small-angle X-ray scattering (SAXS), showing typical characteristics of the liquid crystalline phase, which was classified as the hexagonal phase. A pharmacokinetic study in rats showed sustained release of entecavir for 3-5 days with a basic LCFS formulation composed of sorbitan monooleate (SMO), phosphatidyl choline (PC), and tocopherol acetate (TA) as the main LC components. 1,2-Dipalmitoyl-sn-glycero-3-phosphatidic acid (DPPA), an anionic phospholipid, was added to increase the anchoring effect between the cationic entecavir and the anionic DPPA, which resulted in a 1.5-times increase in half-life in rats. In addition, anchoring was strengthened by optimizing the pH to 2.5-4.5, increasing the half-life in the rat and dog. Also, due to the increasing terminal half-life from rat to dog resulting from species differences, LCFS produced one week delivery of entecavir in rat and two weeks delivery in dog. Therefore, LCFS injection using the anchoring effect for entecavir can potentially be used to deliver the drug over more than 2 weeks or even 1 month for the treatment of hepatitis B.
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23
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Uchino T, Murata A, Miyazaki Y, Oka T, Kagawa Y. Glyceryl Monooleyl Ether-Based Liquid Crystalline Nanoparticles as a Transdermal Delivery System of Flurbiprofen: Characterization and in Vitro Transport. Chem Pharm Bull (Tokyo) 2015; 63:334-40. [DOI: 10.1248/cpb.c15-00029] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Tomonobu Uchino
- Laboratory of Clinical Pharmacokinetics, Shizuoka General Hospital
- Department of Clinical Pharmaceutics, School of Pharmaceutical Sciences, University of Shizuoka
| | - Akiko Murata
- Department of Clinical Pharmaceutics, School of Pharmaceutical Sciences, University of Shizuoka
| | - Yasunori Miyazaki
- Laboratory of Clinical Pharmacokinetics, Shizuoka General Hospital
- Department of Clinical Pharmaceutics, School of Pharmaceutical Sciences, University of Shizuoka
| | - Toshihiko Oka
- Nanomaterials Research Division, Research Institute of Electronics, Shizuoka University
- Department of Physics, Graduate School of Science, Shizuoka University
| | - Yoshiyuki Kagawa
- Laboratory of Clinical Pharmacokinetics, Shizuoka General Hospital
- Department of Clinical Pharmaceutics, School of Pharmaceutical Sciences, University of Shizuoka
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24
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Recent advances in delivery systems and therapeutics of cinnarizine: a poorly water soluble drug with absorption window in stomach. JOURNAL OF DRUG DELIVERY 2014; 2014:479246. [PMID: 25478230 PMCID: PMC4247907 DOI: 10.1155/2014/479246] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Accepted: 10/15/2014] [Indexed: 11/18/2022]
Abstract
Low solubility causing low dissolution in gastrointestinal tract is the major problem for drugs meant for systemic action after oral administration, like cinnarizine. Pharmaceutical products of cinnarizine are commercialized globally as immediate release preparations presenting low absorption with low and erratic bioavailability. Approaches to enhance bioavailability are widely cited in the literature. An attempt has been made to review the bioavailability complications and clinical therapeutics of poorly water soluble drug: cinnarizine. The interest of writing this paper is to summarize the pharmacokinetic limitations of drug with special focus on strategies to improvise bioavailability along with effectiveness of novel dosage forms to circumvent the obstacle. The paper provides insight to the approaches to overcome low and erratic bioavailability of cinnarizine by cyclodextrin complexes and novel dosage forms: self-nanoemulsifying systems and buoyant microparticulates. Nanoformulations need to systematically explored in future, for their new clinical role in prophylaxis of migraine attacks in children. Clinical reports have affirmed the role of cinnarizine in migraine prophylaxis. Research needs to be dedicated to develop dosage forms for efficacious bioavailability and drug directly to brain.
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25
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Du JD, Liu Q, Salentinig S, Nguyen TH, Boyd BJ. A novel approach to enhance the mucoadhesion of lipid drug nanocarriers for improved drug delivery to the buccal mucosa. Int J Pharm 2014; 471:358-65. [PMID: 24879939 DOI: 10.1016/j.ijpharm.2014.05.044] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2014] [Accepted: 05/26/2014] [Indexed: 11/26/2022]
Abstract
Targeted drug delivery to the buccal mucosa offers distinct advantages over oral delivery to the gastrointestinal tract including by-passing hepatic first-pass metabolism. However, the buccal route is often limited by low bioavailability, low drug loading and reduced residence time due to salivary excretion and clearance. To overcome these limitations, a novel mucoadhesive formulation based on liquid crystalline nanoparticles was designed. Utilising a pH induced in situ transition from a stable vesicle formulation to dispersed inverse hexagonal phase nanoparticles (hexosomes) enhanced adsorption onto the mucosal surface was enabled. Firstly, the phase behaviour of the amphiphilic lipid phytantriol (PHY) and oleic acid (OA) was assessed from pH 2-9 using small-angle X-ray scattering (SAXS) and cryo-transmission electron microscopy (cryo-TEM) to determine the appropriate composition for the vesicle to hexosome transition. The colloidal stability of the formulation was determined using turbidity studies. Dispersions comprising 30% w/w OA in PHY were able to form stable vesicles at pH 8 and transition to hexosomes when exposed to pH<7 (as encountered on the buccal mucosal surface). Subsequent ex vivo studies utilising excised porcine buccal tissue indicated significant retention of the in situ-formed PHY/OA hexosomes when compared to control DOPC vesicles (p<0.005), confirmed independently using confocal fluorescence microscopy, radioactive scintillation counting and HPLC analysis for incorporated drug. Thus, a novel approach providing a stable vesicle formulation, with in situ transformation to mucoadhesive hexosomes has been identified with the potential to enhance drug delivery to mucosal surfaces.
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Affiliation(s)
- Joanne D Du
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC, Australia
| | - Qingtao Liu
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC, Australia
| | - Stefan Salentinig
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC, Australia
| | - Tri-Hung Nguyen
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC, Australia.
| | - Ben J Boyd
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC, Australia.
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26
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Lancelot A, Sierra T, Serrano JL. Nanostructured liquid-crystalline particles for drug delivery. Expert Opin Drug Deliv 2014; 11:547-64. [DOI: 10.1517/17425247.2014.884556] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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27
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Mulet X, Boyd BJ, Drummond CJ. Advances in drug delivery and medical imaging using colloidal lyotropic liquid crystalline dispersions. J Colloid Interface Sci 2013; 393:1-20. [DOI: 10.1016/j.jcis.2012.10.014] [Citation(s) in RCA: 213] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Revised: 10/08/2012] [Accepted: 10/08/2012] [Indexed: 10/27/2022]
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28
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Dian L, Yang Z, Li F, Wang Z, Pan X, Peng X, Huang X, Guo Z, Quan G, Shi X, Chen B, Li G, Wu C. Cubic phase nanoparticles for sustained release of ibuprofen: formulation, characterization, and enhanced bioavailability study. Int J Nanomedicine 2013; 8:845-54. [PMID: 23468008 PMCID: PMC3587396 DOI: 10.2147/ijn.s40547] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
In order to improve the oral bioavailability of ibuprofen, ibuprofen-loaded cubic nanoparticles were prepared as a delivery system for aqueous formulations. The cubic inner structure was verified by cryogenic transmission electron microscopy. With an encapsulation efficiency greater than 85%, the ibuprofen-loaded cubic nanoparticles had a narrow size distribution around a mean size of 238 nm. Differential scanning calorimetry and X-ray diffraction determined that ibuprofen was in an amorphous and molecular form within the lipid matrix. The in vitro release of ibuprofen from cubic nanoparticles was greater than 80% at 24 hours, showing sustained characteristics. The pharmacokinetic study in beagle dogs showed improved absorption of ibuprofen from cubic nanoparticles compared to that of pure ibuprofen, with evidence of a longer half-life and a relative oral bioavailability of 222% (P < 0.05). The ibuprofen-loaded cubic nanoparticles provide a promising carrier candidate with an efficient drug delivery for therapeutic treatment.
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Affiliation(s)
- Linghui Dian
- School of Pharmaceutical Sciences, Sun Yat-Sen University, University Town, Guangzhou, People's Republic of China
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