151
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Wickremasinghe NC, Kumar VA, Shi S, Hartgerink JD. Controlled Angiogenesis in Peptide Nanofiber Composite Hydrogels. ACS Biomater Sci Eng 2015; 1:845-854. [PMID: 26925462 DOI: 10.1021/acsbiomaterials.5b00210] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Multidomain peptide (MDP) nanofibers create scaffolds that can present bioactive cues to promote biological responses. Orthogonal self-assembly of MDPs and growth-factor-loaded liposomes generate supramolecular composite hydrogels. These composites can act as delivery vehicles with time-controlled release. Here we examine the controlled release of placental growth factor-1 (PlGF-1) for its ability to induce angiogenic responses. PlGF-1 was loaded either in MDP matrices or within liposomes bound inside MDP matrices. Scaffolds showed expected rapid infiltration of macrophages. When released through liposomes incorporated in MDP gels (MDP(Lipo)), PlGF-1 modulates HUVEC VEGF receptor activation in vitro and robust vessel formation in vivo. These loaded MDP(Lipo) hydrogels induce a high level of growth-factor-mediated neovascular maturity. MDP(Lipo) hydrogels offer a biocompatible and injectable platform to tailor drug delivery and treat ischemic tissue diseases.
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Affiliation(s)
- Navindee C Wickremasinghe
- Department of Chemistry, Rice University, Bioscience Research Collaborative, 6500 Main Street, Houston, Texas 77030, United States
| | - Vivek A Kumar
- Department of Chemistry, Rice University, Bioscience Research Collaborative, 6500 Main Street, Houston, Texas 77030, United States
| | - Siyu Shi
- Department of Chemistry, Rice University, Bioscience Research Collaborative, 6500 Main Street, Houston, Texas 77030, United States
| | - Jeffrey D Hartgerink
- Department of Chemistry, Rice University, Bioscience Research Collaborative, 6500 Main Street, Houston, Texas 77030, United States; Department of Bioengineering, Rice University, Bioscience Research Collaborative, 6500 Main Street, Houston, Texas 77030, United States
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152
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Ansari M. Oral Delivery of Insulin for Treatment of Diabetes: Classical Challenges and Current Opportunities. JOURNAL OF MEDICAL SCIENCES 2015. [DOI: 10.3923/jms.2015.209.220] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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153
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Affiliation(s)
- Bhushan S Pattni
- Department of Pharmaceutical Sciences, Center for Pharmaceutical Biotechnology and Nanomedicine, Northeastern University , Boston, Massachusetts 02115, United States
| | - Vladimir V Chupin
- Laboratory for Advanced Studies of Membrane Proteins, Moscow Institute of Physics and Technology , Dolgoprudny 141700, Russia
| | - Vladimir P Torchilin
- Department of Pharmaceutical Sciences, Center for Pharmaceutical Biotechnology and Nanomedicine, Northeastern University , Boston, Massachusetts 02115, United States.,Department of Biochemistry, Faculty of Science, King Abdulaziz University , Jeddah 21589, Saudi Arabia
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154
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Jin SE, Kim IS, Kim CK. Comparative effects of PEG-containing liposomal formulations on in vivo pharmacokinetics of streptokinase. Arch Pharm Res 2015; 38:1822-9. [PMID: 25851624 DOI: 10.1007/s12272-015-0594-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Accepted: 03/30/2015] [Indexed: 11/24/2022]
Abstract
Streptokinase (SK) is an effective thrombolytic agent, but it has a short half-life due to its rapid elimination from the body. In this study, we prepared and evaluated polyethyleneglycol (PEG)-based liposomal formulations (PEG-liposomes) containing SK with a view toward prolonging its circulatory half-life. SK-bearing liposomes (SK-liposomes) were prepared using freeze-thaw method after film hydration and extrusion techniques, composed of phosphatidylcholine [egg phosphatidylcholine (EPC), dipalmitoyl PC, or distearoyl PC], cholesterol and cholesterol-3-sulfate with or without PEG. Their physicochemical properties were characterized by the measurement of size and zeta potential and incorporation efficiency. SK-liposomal formulations were applied to rats through a femoral vein via intravenous administration to compare the effects of liposomal delivery and PEG on the half-life of SK in blood. Free SK was used as a control. SK activities in plasma were measured to estimate the amidolytic activity of SK-plasminogen complex after rupturing liposomes with Triton X-100. Pharmacokinetic parameters were obtained from SK activity-time profiles. The SK-liposomes had a homogenous distribution of negatively charged nanoparticles at the range of 10-33% of the incorporation efficiencies of SK. Among the SK-liposomes, SK-EPC- and SK-EPC/PEG-liposomes had injectable diameters (<200 nm). SK was administered as free SK, SK-EPC-liposomes, or SK-EPC/PEG-liposomes for in vivo study. SK-EPC/PEG-liposomes had significantly greater the t(1/2), AUC(∞) and MRT values of SK than SK alone or SK-EPC-liposomes. These findings suggest that PEG-liposomal incorporation of SK enhances thrombolytic activity in vivo, and that such liposomes can be utilized to enhance the pharmacokinetic profiles of other therapeutic proteins with a short biological half-life.
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Affiliation(s)
- Su-Eon Jin
- College of Pharmacy, Seoul National University, Seoul, 151-742, Republic of Korea
| | - In-Sook Kim
- College of Pharmacy, Seoul National University, Seoul, 151-742, Republic of Korea
| | - Chong-Kook Kim
- College of Pharmacy, Seoul National University, Seoul, 151-742, Republic of Korea.
- College of Pharmacy, Inje University, Gimhae, Gyeongnam, 621-749, Republic of Korea.
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155
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Rod shaped nanocrystals exhibit superior in vitro dissolution and in vivo bioavailability over spherical like nanocrystals: A case study of lovastatin. Colloids Surf B Biointerfaces 2015; 128:410-418. [DOI: 10.1016/j.colsurfb.2015.02.039] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 02/17/2015] [Accepted: 02/18/2015] [Indexed: 11/22/2022]
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156
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Fathi-Azarbayjani A, Ng KX, Chan YW, Chan SY. Lipid Vesicles for the Skin Delivery of Diclofenac: Cerosomes vs. Other Lipid Suspensions. Adv Pharm Bull 2015; 5:25-33. [PMID: 25789216 PMCID: PMC4352220 DOI: 10.5681/apb.2015.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2014] [Revised: 12/16/2014] [Accepted: 01/11/2015] [Indexed: 11/17/2022] Open
Abstract
PURPOSE Lipid suspensions as drug carriers, including conventional liposomes, ethosomes, transferosomes, proniosomes, niosomes, PEG-PPG-PEG niosomes and stratum corneum liposomes (cerosomes), were formulated and compared. METHODS Lipid vesicles were formulated and assessed with regards to enhancement of skin permeation of diclofenac and stability profiles of the formulations. Formulation-induced changes of the biophysical structure of excised human skin were monitored using the Fourier transform infrared spectroscopy. RESULTS The stability profiles of these suspensions over 12 weeks did not show any significant drug leakage from the vesicles of interest (p > 0.05). FTIR observations indicated that the vesicles increased stratum corneum (SC) lipid fluidization and altered protein conformation. Skin permeability experiments showed that the free unencapsulated drug in the cerosomal formulations caused significant increase in drug permeation across the skin (p < 0.01). Low skin permeability of drug from the other lipid suspensions could be due to the entrapment of diclofenac within these vesicles which decreased the solubility of the hydrophilic drug in the skin lipids and the partition coefficient of the drug from these vesicles into the SC. CONCLUSION Optimal drug entrapment in vesicles or alteration of the skin structure may not necessarily enhance the permeation of hydrophilic drugs across the human skin. These lipid vesicles may be further developed into carriers of both hydrophilic and hydrophobic drugs for topical and transdermal delivery, respectively.
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Affiliation(s)
- Anahita Fathi-Azarbayjani
- Department of Pharmacy, National University of Singapore, Block S4, level 2, Science Drive 4, 117543, Singapore
- Departent of Pharmaceutics, Faculty of Pharmacy, Urmia University of Medical Sciences, Urmia, Iran
| | - Kai Xin Ng
- Department of Pharmacy, National University of Singapore, Block S4, level 2, Science Drive 4, 117543, Singapore
| | - Yew Weng Chan
- Department of Anaesthesiology, Singapore General Hospital, 169608, Singapore
| | - Sui Yung Chan
- Department of Pharmacy, National University of Singapore, Block S4, level 2, Science Drive 4, 117543, Singapore
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157
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Estanqueiro M, Amaral MH, Conceição J, Sousa Lobo JM. Nanotechnological carriers for cancer chemotherapy: The state of the art. Colloids Surf B Biointerfaces 2015; 126:631-48. [DOI: 10.1016/j.colsurfb.2014.12.041] [Citation(s) in RCA: 149] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 12/15/2014] [Accepted: 12/22/2014] [Indexed: 12/19/2022]
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158
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Affiliation(s)
- Sasidharan Swarnalatha Lucky
- NUS Graduate School for Integrative Sciences & Engineering (NGS), National University of Singapore, Singapore, Singapore 117456
- Department
of Biomedical Engineering, Faculty of Engineering, National University of Singapore, Singapore, Singapore 117576
| | - Khee Chee Soo
- Division
of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore 169610
| | - Yong Zhang
- NUS Graduate School for Integrative Sciences & Engineering (NGS), National University of Singapore, Singapore, Singapore 117456
- Department
of Biomedical Engineering, Faculty of Engineering, National University of Singapore, Singapore, Singapore 117576
- College
of Chemistry and Life Sciences, Zhejiang Normal University, Zhejiang, P. R. China 321004
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159
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Tapia MJ, Monteserín M, Burrows HD, Almeida JAS, Pais AACC, Pina J, Seixas de Melo JS, Jarmelo S, Estelrich J. From molecular modelling to photophysics of neutral oligo- and polyfluorenes incorporated into phospholipid bilayers. SOFT MATTER 2015; 11:303-317. [PMID: 25411076 DOI: 10.1039/c4sm02145b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The combination of various experimental techniques with theoretical simulations has allowed elucidation of the mode of incorporation of fluorene based derivatives into phospholipid bilayers. Molecular dynamics (MD) simulations on a fully hydrated 1,2-dimyristoyl-sn-glycero-3-phosphatidylcholine (DMPC) bilayer, with benzene (B), biphenyl (BP), fluorene (F) and tri-(9,9-di-n-octylfluorenyl-2,7-diyl), TF, have provided insights into the topography of these molecules when they are present in the phospholipid bilayer, and suggest marked differences between the behavior of the small molecules and the oligomer. Further information on the interaction of neutral fluorenes within the phospholipid bilayer was obtained by an infrared (IR) spectroscopic study of films of DMPC and of the phospholipid with PFO deuterated specifically on its alkyl chains (DMPC-PFO-d34). This was complemented by measurements of the effect of F, TF and two neutral polymers: polyfluorene poly(9,9-di-n-octylfluorenyl-2,7-diyl), PFO, and poly(9,9-di-n-dodecylfluorenyl-2,7-diyl), PFD, on the phospholipid phase transition temperature using differential scanning calorimetry (DSC). Changes in liposome size upon addition of F and PFO were followed by dynamic light scattering. In addition, the spectroscopic properties of F, TF, PFO and PFD solubilised in DMPC liposomes (absorption, steady-state and time-resolved fluorescence) were compared with those of the same probes in typical organic solvents (chloroform, cyclohexane and ethanol). Combining the insight from MD simulations with the results at the molecular level from the various experimental techniques suggests that while the small molecules have a tendency to be located in the phospholipid head group region, the polymers are incorporated within the lipid bilayers, with the backbone predominantly orthogonal to the phospholipid alkyl chains and with interdigitation of them and the PFO alkyl chains.
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Affiliation(s)
- M J Tapia
- Departamento de Química, Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain.
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160
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Khanniri E, Bagheripoor-Fallah N, Sohrabvandi S, Mortazavian AM, Khosravi-Darani K, Mohammad R. Application of Liposomes in Some Dairy Products. Crit Rev Food Sci Nutr 2015; 56:484-93. [DOI: 10.1080/10408398.2013.779571] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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161
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Yin R, Agrawal T, Khan U, Gupta GK, Rai V, Huang YY, Hamblin MR. Antimicrobial photodynamic inactivation in nanomedicine: small light strides against bad bugs. Nanomedicine (Lond) 2015; 10:2379-404. [PMID: 26305189 PMCID: PMC4557875 DOI: 10.2217/nnm.15.67] [Citation(s) in RCA: 129] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The relentless advance of drug-resistance among pathogenic microbes, mandates a search for alternative approaches that will not cause resistance. Photodynamic inactivation (PDI) involves the combination of nontoxic dyes with harmless visible light to produce reactive oxygen species that can selectively kill microbial cells. PDI can be broad-spectrum in nature and can also destroy microbial cells in biofilms. Many different kinds of nanoparticles have been studied to potentiate antimicrobial PDI by improving photosensitizer solubility, photochemistry, photophysics and targeting. This review will cover photocatalytic disinfection with titania nanoparticles, carbon nanomaterials (fullerenes, carbon nanotubes and graphene), liposomes and polymeric nanoparticles. Natural polymers (chitosan and cellulose), gold and silver plasmonic nanoparticles, mesoporous silica, magnetic and upconverting nanoparticles have all been used for PDI.
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Affiliation(s)
- Rui Yin
- Department of Dermatology, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
- Wellman Center for Photomedicine, Massachusetts General Hospital, BAR414, 40 Blossom Street, Boston, MA 02114, USA
- Department of Dermatology, Harvard Medical School, Boston, MA 02115, USA
| | - Tanupriya Agrawal
- Wellman Center for Photomedicine, Massachusetts General Hospital, BAR414, 40 Blossom Street, Boston, MA 02114, USA
- Department of Dermatology, Harvard Medical School, Boston, MA 02115, USA
| | - Usman Khan
- Wellman Center for Photomedicine, Massachusetts General Hospital, BAR414, 40 Blossom Street, Boston, MA 02114, USA
- Department of Dermatology, Harvard Medical School, Boston, MA 02115, USA
| | - Gaurav K Gupta
- Wellman Center for Photomedicine, Massachusetts General Hospital, BAR414, 40 Blossom Street, Boston, MA 02114, USA
- Department of Dermatology, Harvard Medical School, Boston, MA 02115, USA
| | - Vikrant Rai
- Wilf Family Cardiovascular Research Institute, Division of Cardiology, Department of Medicine, Albert Einstein College of Medicine, Bronx, NY 10461
| | - Ying-Ying Huang
- Wellman Center for Photomedicine, Massachusetts General Hospital, BAR414, 40 Blossom Street, Boston, MA 02114, USA
- Department of Dermatology, Harvard Medical School, Boston, MA 02115, USA
| | - Michael R Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, BAR414, 40 Blossom Street, Boston, MA 02114, USA
- Department of Dermatology, Harvard Medical School, Boston, MA 02115, USA
- Harvard-MIT Division of Health Sciences & Technology, Cambridge, MA 02139, USA
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162
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Kalhapure RS, Suleman N, Mocktar C, Seedat N, Govender T. Nanoengineered drug delivery systems for enhancing antibiotic therapy. J Pharm Sci 2014; 104:872-905. [PMID: 25546108 DOI: 10.1002/jps.24298] [Citation(s) in RCA: 125] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 11/07/2014] [Accepted: 11/07/2014] [Indexed: 12/12/2022]
Abstract
Formulation scientists are recognizing nanoengineered drug delivery systems as an effective strategy to overcome limitations associated with antibiotic drug therapy. Antibiotics encapsulated into nanodelivery systems will contribute to improved management of patients with various infectious diseases and to overcoming the serious global burden of antibiotic resistance. An extensive review of several antibiotic-loaded nanocarriers that have been formulated to target drugs to infectious sites, achieve controlled drug release profiles, and address formulation challenges, such as low-drug entrapment efficiencies, poor solubility and stability is presented in this paper. The physicochemical properties and the in vitro/in vivo performances of various antibiotic-loaded delivery systems, such as polymeric nanoparticles, micelles, dendrimers, liposomes, solid lipid nanoparticles, lipid-polymer hybrid nanoparticles, nanohybirds, nanofibers/scaffolds, nanosheets, nanoplexes, and nanotubes/horn/rods and nanoemulsions, are highlighted and evaluated. Future studies that will be essential to optimize formulation and commercialization of these antibiotic-loaded nanosystems are also identified. The review presented emphasizes the significant formulation progress achieved and potential that novel nanoengineered antibiotic drug delivery systems have for enhancing the treatment of patients with a range of infections.
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Affiliation(s)
- Rahul S Kalhapure
- Discipline of Pharmaceutical Sciences, School of Health Sciences, University of KwaZulu-Natal, Durban, 4000, South Africa
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163
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Ding Y, Wu F, Tan C. Synthetic Biology: A Bridge between Artificial and Natural Cells. Life (Basel) 2014; 4:1092-116. [PMID: 25532531 PMCID: PMC4284483 DOI: 10.3390/life4041092] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 12/02/2014] [Accepted: 12/11/2014] [Indexed: 12/24/2022] Open
Abstract
Artificial cells are simple cell-like entities that possess certain properties of natural cells. In general, artificial cells are constructed using three parts: (1) biological membranes that serve as protective barriers, while allowing communication between the cells and the environment; (2) transcription and translation machinery that synthesize proteins based on genetic sequences; and (3) genetic modules that control the dynamics of the whole cell. Artificial cells are minimal and well-defined systems that can be more easily engineered and controlled when compared to natural cells. Artificial cells can be used as biomimetic systems to study and understand natural dynamics of cells with minimal interference from cellular complexity. However, there remain significant gaps between artificial and natural cells. How much information can we encode into artificial cells? What is the minimal number of factors that are necessary to achieve robust functioning of artificial cells? Can artificial cells communicate with their environments efficiently? Can artificial cells replicate, divide or even evolve? Here, we review synthetic biological methods that could shrink the gaps between artificial and natural cells. The closure of these gaps will lead to advancement in synthetic biology, cellular biology and biomedical applications.
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Affiliation(s)
- Yunfeng Ding
- Department of Biomedical Engineering, University of California Davis, One Shields Ave., Davis, CA 95616-5270, USA.
| | - Fan Wu
- Department of Biomedical Engineering, University of California Davis, One Shields Ave., Davis, CA 95616-5270, USA.
| | - Cheemeng Tan
- Department of Biomedical Engineering, University of California Davis, One Shields Ave., Davis, CA 95616-5270, USA.
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164
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Monteiro N, Martins A, Reis RL, Neves NM. Liposomes in tissue engineering and regenerative medicine. J R Soc Interface 2014; 11:20140459. [PMID: 25401172 PMCID: PMC4223894 DOI: 10.1098/rsif.2014.0459] [Citation(s) in RCA: 211] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Accepted: 10/02/2014] [Indexed: 01/13/2023] Open
Abstract
Liposomes are vesicular structures made of lipids that are formed in aqueous solutions. Structurally, they resemble the lipid membrane of living cells. Therefore, they have been widely investigated, since the 1960s, as models to study the cell membrane, and as carriers for protection and/or delivery of bioactive agents. They have been used in different areas of research including vaccines, imaging, applications in cosmetics and tissue engineering. Tissue engineering is defined as a strategy for promoting the regeneration of tissues for the human body. This strategy may involve the coordinated application of defined cell types with structured biomaterial scaffolds to produce living structures. To create a new tissue, based on this strategy, a controlled stimulation of cultured cells is needed, through a systematic combination of bioactive agents and mechanical signals. In this review, we highlight the potential role of liposomes as a platform for the sustained and local delivery of bioactive agents for tissue engineering and regenerative medicine approaches.
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Affiliation(s)
- Nelson Monteiro
- 3B's Research Group—Biomaterials, Biodegradables and Biomimetics Department of Polymer Engineering, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra S. Cláudio do Barco, 4806-909, Caldas das Taipas, Guimarães, Portugal
- ICVS/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Albino Martins
- 3B's Research Group—Biomaterials, Biodegradables and Biomimetics Department of Polymer Engineering, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra S. Cláudio do Barco, 4806-909, Caldas das Taipas, Guimarães, Portugal
- ICVS/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Rui L. Reis
- 3B's Research Group—Biomaterials, Biodegradables and Biomimetics Department of Polymer Engineering, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra S. Cláudio do Barco, 4806-909, Caldas das Taipas, Guimarães, Portugal
- ICVS/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Nuno M. Neves
- 3B's Research Group—Biomaterials, Biodegradables and Biomimetics Department of Polymer Engineering, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra S. Cláudio do Barco, 4806-909, Caldas das Taipas, Guimarães, Portugal
- ICVS/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal
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165
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Liposomes as carriers of hydrophilic small molecule drugs: Strategies to enhance encapsulation and delivery. Colloids Surf B Biointerfaces 2014; 123:345-63. [DOI: 10.1016/j.colsurfb.2014.09.029] [Citation(s) in RCA: 292] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 07/30/2014] [Accepted: 09/14/2014] [Indexed: 12/18/2022]
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166
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Hybrid formulations of liposomes and bioadhesive polymers improve the hypotensive effect of the melatonin analogue 5-MCA-NAT in rabbit eyes. PLoS One 2014; 9:e110344. [PMID: 25329636 PMCID: PMC4203784 DOI: 10.1371/journal.pone.0110344] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Accepted: 09/18/2014] [Indexed: 01/01/2023] Open
Abstract
For the treatment of chronic ocular diseases such as glaucoma, continuous instillations of eye drops are needed. However, frequent administrations of hypotensive topical formulations can produce adverse ocular surface effects due to the active substance or other components of the formulation, such as preservatives or other excipients. Thus the development of unpreserved formulations that are well tolerated after frequent instillations is an important challenge to improve ophthalmic chronic topical therapies. Furthermore, several components can improve the properties of the formulation in terms of efficacy. In order to achieve the mentioned objectives, we have developed formulations of liposomes (150–200 nm) containing components similar to those in the tear film and loaded with the hypotensive melatonin analog 5-methoxycarbonylamino-N-acetyltryptamine (5-MCA-NAT, 100 µM). These formulations were combined with mucoadhesive (sodium hyaluronate or carboxymethylcellulose) or amphiphilic block thermosensitive (poloxamer) polymers to prolong the hypotensive efficacy of the drug. In rabbit eyes, the decrease of intraocular pressure with 5-MCA-NAT-loaded liposomes that were dispersed with 0.2% sodium hyaluronate, 39.1±2.2%, was remarkably higher compared to other liposomes formulated without or with other bioadhesive polymers, and the effect lasted more than 8 hours. According to the results obtained in the present work, these technological strategies could provide an improved modality for delivering therapeutic agents in patients with glaucoma.
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167
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Wickremasinghe N, Kumar VA, Hartgerink JD. Two-step self-assembly of liposome-multidomain peptide nanofiber hydrogel for time-controlled release. Biomacromolecules 2014; 15:3587-95. [PMID: 25308335 PMCID: PMC4195521 DOI: 10.1021/bm500856c] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Revised: 08/18/2014] [Indexed: 02/06/2023]
Abstract
Progress in self-assembly and supramolecular chemistry has been directed toward obtaining macromolecular assemblies with higher degrees of complexity, simulating the highly structured environment in natural systems. One approach to this type of complexity are multistep, multicomponent, self-assembling systems that allow approaches comparable to traditional multistep synthetic organic chemistry; however, only a few examples of this approach have appeared in the literature. Our previous work demonstrated nanofibrous mimics of the extracellular matrix. Here we demonstrate the ability to create a unique hydrogel, developed by stepwise self-assembly of multidomain peptide fibers and liposomes. The two-component system allows for controlled release of bioactive factors at multiple time points. The individual components of the self-assembled gel and the composite hydrogel were characterized by TEM, SEM, and rheometry, demonstrating that peptide nanofibers and lipid vesicles both retain their structural integrity in the composite gel. The rheological robustness of the hydrogel is shown to be largely unaffected by the presence of liposomes. Release studies from the composite gels loaded with different growth factors EGF, MCP-1, and PlGF-1 showed delay and prolongation of release by liposomes entrapped in the hydrogel compared to more rapid release from the hydrogel alone. This bimodal release system may have utility in systems where timed cascades of biological signals may be valuable, such as in tissue regeneration.
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Affiliation(s)
- Navindee
C. Wickremasinghe
- Departments of Chemistry and Bioengineering, Rice University, Bioscience Research
Collaborative, 6500 Main Street, Houston, Texas 77030, United States
| | - Vivek A. Kumar
- Departments of Chemistry and Bioengineering, Rice University, Bioscience Research
Collaborative, 6500 Main Street, Houston, Texas 77030, United States
| | - Jeffrey D. Hartgerink
- Departments of Chemistry and Bioengineering, Rice University, Bioscience Research
Collaborative, 6500 Main Street, Houston, Texas 77030, United States
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168
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Ourique AF, Chaves PDS, Souto GD, Pohlmann AR, Guterres SS, Beck RCR. Redispersible liposomal-N-acetylcysteine powder for pulmonary administration: development, in vitro characterization and antioxidant activity. Eur J Pharm Sci 2014; 65:174-82. [PMID: 25263567 DOI: 10.1016/j.ejps.2014.09.017] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Revised: 09/16/2014] [Accepted: 09/18/2014] [Indexed: 10/24/2022]
Abstract
Liposomal dry powders of N-acetylcysteine (SD-NAC-Lip) were developed for pulmonary administration. Liposomes were prepared by reverse phase evaporation and spray dried using lactose (10%, w/w) as drying adjuvant. The powders were characterized according to process yield, drug content, residual water content, particle size distribution, morphology and redispersion behavior. In vitro aerosol performance was evaluated using an eight-stage Andersen Cascade Impactor. Moreover, in vitro antioxidant activity was determined by measuring thiobarbituric acid reactive species (TBARS) present in the lungs of healthy Wistar rats after induction of oxidation by iron/EDTA. The spray-drying process had a high yield (71%±2), drug content (mg/g) according to the expected value, moisture content below 9%, geometric mean diameter under 3μm with span value lower than 1. Spherical particles were observed by scanning electron microscopy. Liposomal dry-powders were able to recover the nanometric size of the original dispersion after their redispersion in aqueous medium, as shown by laser diffraction and transmission electron microscopy. Furthermore, the powders presented aerodynamic diameter of about 7μm and respirable fraction above 30%, indicating suitable properties for pulmonary use. The encapsulation of N-acetylcysteine in liposomes was essential to maintain its in vitro antioxidant activity after the drying process. In addition, the powder containing the encapsulated drug had better in vitro antioxidant activity than the liquid and solid formulations containing the non-encapsulated drug, which makes it a good candidate for the treatment of pulmonary diseases associated with oxidative stress.
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Affiliation(s)
- Aline Ferreira Ourique
- Programa de Pós-Graduação em Nanotecnologia Farmacêutica, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Paula Dos Santos Chaves
- Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Gabriele Dadalt Souto
- Programa de Pós-Graduação em Nanotecnologia Farmacêutica, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Adriana Raffin Pohlmann
- Programa de Pós-Graduação em Nanotecnologia Farmacêutica, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Departamento de Química Orgânica, Instituto de Química, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Silvia Stanisçuaski Guterres
- Programa de Pós-Graduação em Nanotecnologia Farmacêutica, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Ruy Carlos Ruver Beck
- Programa de Pós-Graduação em Nanotecnologia Farmacêutica, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
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169
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Bai C, Luo G, Liu Y, Zhao S, Zhu X, Zhao Q, Peng H, Xiong H. A Comparison Investigation of Coix Seed Oil Liposomes Prepared by Five Different Methods. J DISPER SCI TECHNOL 2014. [DOI: 10.1080/01932691.2014.893524] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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170
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Cooper DL, Conder CM, Harirforoosh S. Nanoparticles in drug delivery: mechanism of action, formulation and clinical application towards reduction in drug-associated nephrotoxicity. Expert Opin Drug Deliv 2014; 11:1661-80. [PMID: 25054316 DOI: 10.1517/17425247.2014.938046] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
INTRODUCTION Over the past few decades, nanoparticles (NPs) have gained immeasurable interest in the field of drug delivery. Various NP formulations have been disseminated in drug development in an attempt to increase efficacy, safety and tolerability of incorporated drugs. In this context, NP formulations that increase solubility, control release, and/or affect the in vivo disposition of drugs, were developed to improve the pharmacokinetic and pharmacodynamic properties of encapsulated drugs. AREAS COVERED In this article, important properties related to NP function such as particle size, surface charge and shape are disseminated. Also, the current understanding of how NP characteristics affect particle uptake and targeted delivery is elucidated. Selected NP systems currently used in delivery of drugs in biological systems and their production methods are discussed as well. Emphasis is placed on current NP formulations that are shown to reduce drug-induced adverse renal complications. EXPERT OPINION Formulation designs utilizing NP-encapsulated drugs offer alternative pharmacotherapy options with improved safety profiles for current and emerging drugs. NPs have been shown to increase the therapeutic index of several entrapped drugs mostly by decreasing drug localization and side effects on organs. Recent studies on NP-encapsulated chemotherapeutic and antibiotic medications show enhanced therapeutic outcomes by altering drug degradation, increasing systemic circulation and/or enhancing cell specific targeting. They may also reduce the distribution of encapsulated drugs into the kidneys and attenuate drug-associated adverse renal complications. The usefulness of NP formulation in reducing the nephrotoxicity of nonsteroidal anti-inflammatory drugs is an under explored territory that deserves more attention.
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Affiliation(s)
- Dustin L Cooper
- East Tennessee State University, Gatton College of Pharmacy, Department of Pharmaceutical Sciences , Johnson City, TN 37614 , USA
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171
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Kuo YC, Chou PR. Neuroprotection against degeneration of sk-N-mc cells using neuron growth factor-encapsulated liposomes with surface cereport and transferrin. J Pharm Sci 2014; 103:2484-97. [PMID: 25041794 DOI: 10.1002/jps.24081] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Revised: 06/14/2014] [Accepted: 06/16/2014] [Indexed: 11/06/2022]
Abstract
Liposomes with Cereport (RMP-7) and transferrin (Tf) (RMP-7/Tf/liposomes) were employed to target the blood-brain barrier (BBB) and to inhibit the degeneration of neurons insulted with fibrillar β-amyloid peptide 1-42 (Aβ1-42). Neuron growth factor (NGF)-encapsulated RMP-7/Tf/liposomes (RMP-7/Tf/NGF-liposomes) were used to permeate a monolayer of human brain-microvascular endothelial cells (HBMECs) regulated by human astrocytes (HAs) and to treat Aβ1-42 -attacked SK-N-MC cells. An increase in RMT-7 concentration increased the particle size, zeta potential, propidium iodide (PI) permeability, and NGF permeability, but decreased the cross-linking efficiency of RMT-7, viability of HBMECs and HAs, and transendothelial electrical resistance (TEER). In addition, an increase in Tf concentration enhanced the particle size, viability of HBMECs, HAs, and SK-N-MC cells, PI permeability, and NGF permeability, but reduced the zeta potential, cross-linking efficiency of RMT-7 and Tf, and TEER. RMP-7/Tf/NGF-liposomes can transport NGF across the BBB and improve the neuroprotection for Alzheimer's disease therapy in preclinical trials.
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Affiliation(s)
- Yung-Chih Kuo
- Department of Chemical Engineering, National Chung Cheng University, Chia-Yi, Taiwan, 62102, Republic of China
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172
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Corace G, Angeloni C, Malaguti M, Hrelia S, Stein PC, Brandl M, Gotti R, Luppi B. Multifunctional liposomes for nasal delivery of the anti-Alzheimer drug tacrine hydrochloride. J Liposome Res 2014; 24:323-35. [PMID: 24807822 DOI: 10.3109/08982104.2014.899369] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The purpose of this study was the development of multifunctional liposomes for nasal administration of tacrine hydrochloride. Liposomes were prepared using traditional excipients (cholesterol and phosphatidylcholine), partly enriched with α-tocopherol and/or Omega3 fatty acids. This approach was chosen in order to obtain at the same time two positive results: an enhanced drug permeation through nasal mucosa and a concomitant neuroprotective effect. Several liposome formulations were prepared using the Reverse Phase Evaporation technique followed by membrane filter extrusion. In particular, liposome capacity to enhance drug permeation was evaluated by means of membrane permeation and cellular uptake studies. Furthermore, liposome effect on neuronal viability and intracellular ROS production was evaluated as well as their cytoprotective effect against oxidative stress. All liposome formulations showed a mean diameter in the range of 175 nm to 219 nm with polydispersity index lower than 0.22, a lightly negative zeta potential and excellent encapsulation efficiency. Moreover, along with good mucoadhesive properties, multifunctional liposomes showed a markedly increase in tacrine permeability, which can be related to liposome fusion with cellular membrane, a hypothesis, which was also supported by cellular uptake studies. Finally, the addition of α-tocopherol without Omega3 fatty acids, was found to increase the neuroprotective activity and antioxidant properties of liposomes.
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Affiliation(s)
- Giuseppe Corace
- Department of Pharmacy and Biotechnology, University of Bologna , Via San Donato, Bologna , Italy
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173
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Rauscher A, Frindel M, Maurel C, Maillasson M, Le Saëc P, Rajerison H, Gestin JF, Barbet J, Faivre-Chauvet A, Mougin-Degraef M. Influence of pegylation and hapten location at the surface of radiolabelled liposomes on tumour immunotargeting using bispecific antibody. Nucl Med Biol 2014; 41 Suppl:e66-74. [DOI: 10.1016/j.nucmedbio.2013.12.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Revised: 12/05/2013] [Accepted: 12/18/2013] [Indexed: 11/25/2022]
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174
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Felice B, Prabhakaran MP, Rodríguez AP, Ramakrishna S. Drug delivery vehicles on a nano-engineering perspective. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 41:178-95. [PMID: 24907751 DOI: 10.1016/j.msec.2014.04.049] [Citation(s) in RCA: 153] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Revised: 03/04/2014] [Accepted: 04/18/2014] [Indexed: 12/21/2022]
Abstract
Nanoengineered drug delivery systems (nDDS) have been successfully used as clinical tools for not only modulation of pharmacological drug release profile but also specific targeting of diseased tissues. Until now, encapsulation of anti-cancer molecules such as paclitaxel, vincristin and doxorubicin has been the main target of nDDS, whereby liposomes and polymer-drug conjugates remained as the most popular group of nDDS used for this purpose. The success reached by these nanocarriers can be imitated by careful selection and optimization of the different factors that affect drug release profile (i.e. type of biomaterial, size, system architecture, and biodegradability mechanisms) along with the selection of an appropriate manufacture technique that does not compromise the desired release profile, while it also offers possibilities to scale up for future industrialization. This review focuses from an engineering perspective on the different parameters that should be considered before and during the design of new nDDS, and the different manufacturing techniques available, in such a way to ensure success in clinical application.
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Affiliation(s)
- Betiana Felice
- Laboratorio de Medios e Interfases, Departamento de Bioingeniería, Universidad Nacional de Tucumán, Av. Kirchner 1800, Tucumán, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917, Buenos Aires, Argentina.; START - Thrust 3, Create Research Wing, #03-08, 1 Create Way, National University of Singapore, Singapore 138602
| | - Molamma P Prabhakaran
- START - Thrust 3, Create Research Wing, #03-08, 1 Create Way, National University of Singapore, Singapore 138602.
| | - Andrea P Rodríguez
- Laboratorio de Medios e Interfases, Departamento de Bioingeniería, Universidad Nacional de Tucumán, Av. Kirchner 1800, Tucumán, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917, Buenos Aires, Argentina
| | - Seeram Ramakrishna
- START - Thrust 3, Create Research Wing, #03-08, 1 Create Way, National University of Singapore, Singapore 138602; Department of Mechanical Engineering, National University of Singapore, Singapore
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175
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Patil-Gadhe A, Pokharkar V. Single step spray drying method to develop proliposomes for inhalation: a systematic study based on quality by design approach. Pulm Pharmacol Ther 2014; 27:197-207. [PMID: 23916767 DOI: 10.1016/j.pupt.2013.07.006] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Revised: 07/09/2013] [Accepted: 07/17/2013] [Indexed: 11/21/2022]
Abstract
Quality by Design (QbD) is a systematic approach to develop drug products which includes evaluation of formulation parameters to achieve defined final product quality. In the present study principles of QbD were extended to the preparation, in-vitro and in-vivo performance of rifapentine-loaded proliposomes for pulmonary inhalation where final product needs to comply with specific properties. The rifapentine-loaded proliposomes for the treatment of tuberculosis were prepared in single step by spray drying method and independent variables were optimized using factorial design approach. Contour plots and multiple regression analysis were used to study the effect of selected independent variables on dependent variables. The effect of presence of drug: hydrogenated soya phosphatidylcholine (HSPC) and type of charged lipid in the formulation at three levels were studied on mass median diameter (MMD), liposomal vesicle size, % encapsulation efficiency (% EE), mass median aerodynamic diameter (MMAD) and fine particle fraction (FPF) as critical quality attributes. Optimized formulation (R-LDPI-7) with drug: HSPC ratio of 1:2 and stearyl amine as charged lipid were found to give respirable proliposomes with MMAD of 1.56 ± 0.16 μm and FPF of 92.5 ± 1.5%. Sustained drug release with Higuchi diffusion kinetics was achieved from liposomally encapsulated rifapentine. Pulmonary pharmacokinetics of optimized batch R-LDPI-7 revealed longer retention of drug in lungs with 7 fold increase in both, the mean residence time and t1/2 as compared to R-DPI-0. The study results demonstrated the application of QbD principles and design of experiment (DOE) approach to develop drug encapsulated proliposomes for inhalation by spray drying in single step.
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Affiliation(s)
- Arpana Patil-Gadhe
- Bharati Vidyapeeth University, Poona College of Pharmacy, Department of Pharmaceutics, Erandwane, Pune 411038, Maharashtra, India
| | - Varsha Pokharkar
- Bharati Vidyapeeth University, Poona College of Pharmacy, Department of Pharmaceutics, Erandwane, Pune 411038, Maharashtra, India.
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176
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Cheng L, Huang FZ, Cheng LF, Zhu YQ, Hu Q, Li L, Wei L, Chen DW. GE11-modified liposomes for non-small cell lung cancer targeting: preparation, ex vitro and in vivo evaluation. Int J Nanomedicine 2014; 9:921-35. [PMID: 24611009 PMCID: PMC3928463 DOI: 10.2147/ijn.s53310] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Non-small cell lung cancer (NSCLC) is a serious threat to human health, and 40%–80% of NSCLCs express high levels of epidermal growth factor receptor (EGFR). GE11 is a novel peptide and exhibits high affinity for EGFR binding. The aim of this study was to construct and evaluate GE11-modified liposomes for targeted drug delivery to EGFR-positive NSCLC. Doxorubicin, a broad-spectrum antitumor agent, was chosen as the payload. GE11 was conjugated to the distal end of DSPE-PEG2000-Mal by an addition reaction with a conjugation efficiency above 90%. Doxorubicin-loaded liposomes containing GE11 (GE11-LP/DOX) at densities ranging from 0% to 15% were prepared by combination of a thin film hydration method and a post insertion method. Irrespective of GE11 density, the physicochemical properties of these targeted liposomes, including particle size, zeta potential, and drug entrapment efficiency, were nearly identical. Interestingly, the cytotoxic effect of the liposomes on A549 tumor cells was closely related to GE11 density, and liposomes with 10% GE11 had the highest tumor cell killing activity and a 2.6-fold lower half maximal inhibitory concentration than that of the nontargeted counterpart (PEG-LP/DOX). Fluorescence microscopy and flow cytometry analysis revealed that GE11 significantly increased cellular uptake of the liposomes, which could be ascribed to specific EGFR-mediated endocytosis. It was found that multiple endocytic pathways were involved in entry of GE11-LP/DOX into cells, but GE11 assisted in cellular internalization mainly via the clathrin-mediated endocytosis pathway. Importantly, the GE11-modified liposomes showed enhanced accumulation and prolonged retention in tumor tissue, as evidenced by a 2.2-fold stronger mean fluorescence intensity in tumor tissue than the unmodified liposomes at 24 hours. In summary, GE11-modified liposomes may be a promising platform for targeted delivery of chemotherapeutic drugs in NSCLC.
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Affiliation(s)
- Liang Cheng
- Department of Pharmaceutics, College of Pharmaceutical Science, Soochow University, Suzhou, Jiangsu Province, People's Republic of China
| | - Fa-Zhen Huang
- Department of Pharmaceutics, College of Pharmaceutical Science, Soochow University, Suzhou, Jiangsu Province, People's Republic of China ; Department of Pharmacy, Central Hospital of Zaozhuang Minging Group, Zaozhuang, Shandong Province, People's Republic of China
| | - Li-Fang Cheng
- Department of Pharmaceutics, College of Pharmaceutical Science, Soochow University, Suzhou, Jiangsu Province, People's Republic of China
| | - Ya-Qin Zhu
- Department of Pharmaceutics, College of Pharmaceutical Science, Soochow University, Suzhou, Jiangsu Province, People's Republic of China
| | - Qing Hu
- Department of Pharmaceutics, College of Pharmaceutical Science, Soochow University, Suzhou, Jiangsu Province, People's Republic of China
| | - Ling Li
- Department of Pharmaceutics, College of Pharmaceutical Science, Soochow University, Suzhou, Jiangsu Province, People's Republic of China
| | - Lin Wei
- Department of Pharmaceutics, College of Pharmaceutical Science, Soochow University, Suzhou, Jiangsu Province, People's Republic of China
| | - Da-Wei Chen
- Department of Pharmaceutics, College of Pharmaceutical Science, Soochow University, Suzhou, Jiangsu Province, People's Republic of China
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177
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Faria PEP, Felipucci DNB, Simioni AR, Primo FL, Tedesco AC, Salata LA. Effects of Photodynamic Process (PDP) in Implant Osseointegration: A Histologic and Histometric Study in Dogs. Clin Implant Dent Relat Res 2014; 17:879-90. [DOI: 10.1111/cid.12204] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Paulo Esteves Pinto Faria
- Oral and Maxillofacial Surgery; School of Dentistry of the University of Ribeirão Preto; São Paulo Brazil
| | - Daniela Nair Borges Felipucci
- Department of Dental Materials and Prosthodontics; Faculty of Dentistry of Ribeirão Preto; University of São Paulo; São Paulo Brazil
| | - Andreza Ribeiro Simioni
- Institute of Research and Development; Laboratory of Organic Synthesis; University of Paraíba Valley; São José dos Campos Brazil
| | - Fernando Lucas Primo
- Department of Chemistry; Faculty of Philosophy and Science at Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - Antonio Cláudio Tedesco
- Department of Chemistry; Group of Photobiology and Photo Medicine; Faculty of Philosophy and Science at Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - Luiz Antonio Salata
- Department of Oral and Maxillofacial Surgery and Periodontics; Faculty of Dentistry; University of São Paulo; Ribeirão Preto Brazil
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178
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Hubert M, Larsen DS, Hayman CM, Rades T, Hook S. Physical Characterization of Synthetic Phosphatidylinositol Dimannosides and Analogues in Binary Systems with Phosphatidylcholine. Mol Pharm 2014; 11:913-21. [DOI: 10.1021/mp400588y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - Colin M. Hayman
- Carbohydrate
Chemistry Team, Callaghan Innovation, P.O. Box 31-310, Lower Hutt, New Zealand
| | - Thomas Rades
- Department
of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
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179
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Novel methods for liposome preparation. Chem Phys Lipids 2014; 177:8-18. [DOI: 10.1016/j.chemphyslip.2013.10.011] [Citation(s) in RCA: 373] [Impact Index Per Article: 37.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Revised: 10/24/2013] [Accepted: 10/30/2013] [Indexed: 12/18/2022]
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180
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Drug Delivery Systems That Eradicate and/or Prevent Biofilm Formation. SPRINGER SERIES ON BIOFILMS 2014. [DOI: 10.1007/978-3-642-53833-9_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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181
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182
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Optimization of selected liposome-encapsulated diketopiperazines. J Drug Deliv Sci Technol 2014. [DOI: 10.1016/s1773-2247(14)50023-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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183
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Mota ADCV, de Freitas ZMF, Ricci Júnior E, Dellamora-Ortiz GM, Santos-Oliveira R, Ozzetti RA, Vergnanini AL, Ribeiro VL, Silva RS, dos Santos EP. In vivo and in vitro evaluation of octyl methoxycinnamate liposomes. Int J Nanomedicine 2013; 8:4689-701. [PMID: 24376350 PMCID: PMC3864883 DOI: 10.2147/ijn.s51383] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Solar radiation causes damage to human skin, and photoprotection is the main way to prevent these harmful effects. The development of sunscreen formulations containing nanosystems is of great interest in the pharmaceutical and cosmetic industries because of the many potential benefits. This study aimed to develop and evaluate an octyl methoxycinnamate (OMC) liposomal nanosystem (liposome/OMC) to obtain a sunscreen formulation with improved safety and efficacy by retaining OMC for longer on the stratum corneum.
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Affiliation(s)
| | | | | | | | | | | | | | - Vanessa Lira Ribeiro
- Pharmacology and Toxicology Department, National Insitute of Quality Control in Health, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Ronald Santos Silva
- Pharmacology and Toxicology Department, National Insitute of Quality Control in Health, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
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184
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Palekar RU, Myerson JW, Schlesinger PH, Sadler JE, Pan H, Wickline SA. Thrombin-targeted liposomes establish a sustained localized anticlotting barrier against acute thrombosis. Mol Pharm 2013; 10:4168-75. [PMID: 24063304 DOI: 10.1021/mp400210q] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The goal of the present work was to design and test an acute-use nanoparticle-based antithrombotic agent that exhibits sustained local inhibition of thrombin without requiring a systemic anticoagulant effect to function against acute arterial thrombosis. To demonstrate proof of concept, we functionalized the surface of liposomes with multiple copies of the direct thrombin inhibitor, d-phenylalanyl-l-prolyl-l-arginyl-chloromethyl ketone (PPACK), which exhibits high affinity for thrombin as a free agent but manifests too rapid clearance in vivo to be effective alone. The PPACK-liposomes were formulated as single unilamellar vesicles, with a diameter of 170.78 ± 10.59 nm and a near neutral charge. In vitro models confirmed the inhibitory activity of PPACK-liposomes, demonstrating a KI' of 172.6 nM. In experimental clots in vitro, treatment of formed clots completely abrogated any further clotting upon exposure to human plasma. The liposomes were evaluated in vivo in a model of photochemical-induced carotid artery injury, resulting in significantly prolonged arterial occlusion time over that of controls (69.06 ± 5.65 min for saline treatment, N = 6, 71.33 ± 9.46 min for free PPACK treated; N = 4, 85.75 ± 18.24 min for precursor liposomes; N = 4, 139.75 ± 20.46 min for PPACK-liposomes; P = 0.0049, N = 6). Systemic anticoagulant profiles revealed a rapid return to control levels within 50 min, while still maintaining antithrombin activity at the injury site. The establishment of a potent and long-acting anticoagulant surface over a newly forming clot with the use of thrombin targeted nanoparticles that do not require systemic anticoagulation to be effective offers an alternative site-targeted approach to the management of acute thrombosis.
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Affiliation(s)
- Rohun U Palekar
- Department of Biomedical Engineering, ‡Department of Cell Biology and Physiology, §Department of Medicine, and ∥Department of Physics, Washington University in St. Louis, Consortium for Translational Research in Advanced Imaging and Nanomedicine , 4320 Forest Park Avenue, St. Louis, Missouri 63108, United States
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185
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Rovoli M, Gortzi O, Lalas S, Kontopidis G. β-Lactoglobulin improves liposome’s encapsulation properties for vitamin E delivery. J Liposome Res 2013; 24:74-81. [DOI: 10.3109/08982104.2013.839701] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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186
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Abstract
In recent years, liposomes have been employed with growing success as pharmaceutical carriers for antineoplastic drugs. One specific strategy used to enhance in vivo liposome-mediated drug delivery is the improvement of intracytoplasmic delivery. In this context, pH-sensitive liposomes (pHSLip) have been designed to explore the endosomal acidification process, which may lead to a destabilization of the liposomes, followed by a release of their contents into the cell cytoplasm. This review considers the current status of pHSLip development and its applicability in cancer treatment, focusing on the mechanisms of pH sensitivity and liposomal composition of pHSLip. The final section will discuss the application of these formulations in both in vitro and in vivo studies of antitumor efficacy.
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187
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Catania A, Barrajón-Catalán E, Nicolosi S, Cicirata F, Micol V. Immunoliposome encapsulation increases cytotoxic activity and selectivity of curcumin and resveratrol against HER2 overexpressing human breast cancer cells. Breast Cancer Res Treat 2013; 141:55-65. [DOI: 10.1007/s10549-013-2667-y] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Accepted: 08/09/2013] [Indexed: 12/26/2022]
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188
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Hoppe SM, Sasaki DY, Kinghorn AN, Hattar K. In-situ transmission electron microscopy of liposomes in an aqueous environment. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:9958-9961. [PMID: 23886420 DOI: 10.1021/la401288g] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The characterization of liposomes was undertaken using in-situ microfluidic transmission electron microscopy. Liposomes were imaged without contrast enhancement staining or cryogenic treatment, allowing for the observation of functional liposomes in an aqueous environment. The stability and quality of the liposome structures observed were found to be highly dependent on the surface and liposome chemistries within the liquid cell. The successful imaging of liposomes suggests the potential for the extension of in-situ microfluidic TEM to a wide variety of other biological and soft matter systems and processes.
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Affiliation(s)
- Sarah M Hoppe
- Sandia National Laboratories, Albuquerque, New Mexico 87185, United States
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189
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Caldeira de Araújo Lopes S, Vinícius Melo Novais M, Salviano Teixeira C, Honorato-Sampaio K, Tadeu Pereira M, Ferreira LAM, Braga FC, Cristina Oliveira M. Preparation, physicochemical characterization, and cell viability evaluation of long-circulating and pH-sensitive liposomes containing ursolic acid. BIOMED RESEARCH INTERNATIONAL 2013; 2013:467147. [PMID: 23984367 PMCID: PMC3747370 DOI: 10.1155/2013/467147] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Accepted: 07/08/2013] [Indexed: 01/11/2023]
Abstract
Cancer is one of the leading causes of death worldwide. Although several drugs are used clinically, some tumors either do not respond or are resistant to the existing pharmacotherapy, thus justifying the search for new drugs. Ursolic acid (UA) is a triterpene found in different plant species that has been shown to possess significant antitumor activity. However, UA presents a low solubility in aqueous medium, which presents a barrier to its biological applications. In this context, the use of liposomes presents a promising strategy to deliver UA and allow for its intravenous administration. In this work, long-circulating and pH-sensitive liposomes containing UA (SpHL-UA) were developed, and their chemical and physicochemical properties were evaluated. SpHL-UA presented adequate properties, including a mean diameter of 191.1 ± 6.4 nm, a zeta potential of 1.2 ± 1.4 mV, and a UA entrapment of 0.77 ± 0.01 mg/mL. Moreover, this formulation showed a good stability after having been stored for 2 months at 4 °C. The viability studies on breast (MDA-MB-231) and prostate (LNCaP) cancer cell lines demonstrated that SpHL-UA treatment significantly inhibited cancer cell proliferation. Therefore, the results of the present work suggest the applicability of SpHL-UA as a new and promising anticancer formulation.
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Affiliation(s)
- Sávia Caldeira de Araújo Lopes
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - Marcus Vinícius Melo Novais
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - Cláudia Salviano Teixeira
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - Kinulpe Honorato-Sampaio
- Centro de Microscopia, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - Márcio Tadeu Pereira
- Centro de Desenvolvimento de Tecnologia Nuclear (CDTN)/Comissão Nacional de Energia Nuclear (CNEN), Avenida Antônio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - Lucas Antônio Miranda Ferreira
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - Fernão Castro Braga
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - Mônica Cristina Oliveira
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil
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190
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Alhariri M, Azghani A, Omri A. Liposomal antibiotics for the treatment of infectious diseases. Expert Opin Drug Deliv 2013; 10:1515-32. [PMID: 23886421 DOI: 10.1517/17425247.2013.822860] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
INTRODUCTION Liposomal delivery systems have been utilized in developing effective therapeutics against cancer and targeting microorganisms in and out of host cells and within biofilm community. The most attractive feature of liposome-based drugs are enhancing therapeutic index of the new or existing drugs while minimizing their adverse effects. AREAS COVERED This communication provides an overview on several aspects of liposomal antibiotics including the most widely used preparation techniques for encapsulating different agents and the most important characteristic parameters applied for examining shape, size and stability of the spherical vesicles. In addition, the routes of administration, liposome-cell interactions and host parameters affecting the biodistribution of liposomes are highlighted. EXPERT OPINION Liposomes are safe and suitable for delivery of variety of molecules and drugs in biomedical research and medicine. They are known to improve the therapeutic index of encapsulated agents and reduce drug toxicity. Recent studies on liposomal formulation of chemotherapeutic and bioactive agents and their targeted delivery show liposomal antibiotics potential in the treatment of microbial infections.
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Affiliation(s)
- Moayad Alhariri
- Laurentian University, The Novel Drug & Vaccine Delivery Systems Facility, Department of Chemistry and Biochemistry , Sudbury, ON, P3E 2C6 , Canada +1 705 675 1151 ext. 2190 ; +1 705675 4844 ;
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191
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Fanciullino R, Ciccolini J, Milano G. Challenges, expectations and limits for nanoparticles-based therapeutics in cancer: a focus on nano-albumin-bound drugs. Crit Rev Oncol Hematol 2013; 88:504-13. [PMID: 23871532 DOI: 10.1016/j.critrevonc.2013.06.010] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 05/29/2013] [Accepted: 06/27/2013] [Indexed: 11/28/2022] Open
Abstract
Improving the efficacy-toxicity balance of anticancer agents remains an ongoing challenge in oncology. Beside the ever-growing development of innovative drugs addressing newly discovered molecular targets, nanotechnologies provide today a promising and exciting strategy to achieve this goal. The idea of carrying active compounds to their respective targets so as to improve their efficacy while sparing healthy tissue and reducing side-effects is not new. However, this area of research is in constant rise, and benefits from the latest advances in the field of biopharmaceutics, medicinal chemistry and nanomedicine. In addition to anthracyclines already widely present as liposomal drugs on the shelves, a variety of anticancer drugs can be now encapsulated into different chemical of structures so as to enhance their specificity toward malignant cells, mainly through improved pharmacokinetics profiles. Indeed, the recent advances in chemistry allow now a wide variety of scaffolds to be used as drug-carriers, so as optimize the delivery of cytotoxics. Even more recently, conjugated-drugs such as nanoalbumin (Nab) conjugates have emerged as a new promising alternative to improve both anticancer drugs distribution in the body and efficacy/toxicity balance eventually. This review covers the achievements and current limits of nanoparticles in oncology, with a special focus on nab-paclitaxel as a paradigmatic drug for this new generation of conjugated entities.
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Affiliation(s)
- Raphaelle Fanciullino
- Hospital Pharmacy Unit, La Conception University Hospital of Marseille, Marseille, France
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192
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ElMeshad AN, Mortazavi SM, Mozafari MR. Formulation and characterization of nanoliposomal 5-fluorouracil for cancer nanotherapy. J Liposome Res 2013; 24:1-9. [DOI: 10.3109/08982104.2013.810644] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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193
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Song Y, Wang L, Yang P, Wenslow RM, Tan B, Zhang H, Deng Z. Physicochemical Characterization of Felodipine-Kollidon VA64 Amorphous Solid Dispersions Prepared by Hot-Melt Extrusion. J Pharm Sci 2013; 102:1915-1923. [DOI: 10.1002/jps.23538] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Revised: 02/05/2013] [Accepted: 03/18/2013] [Indexed: 11/11/2022]
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194
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Giuberti CDS, Boratto FA, Degobert G, Silveira JN, Oliveira MC. Investigation of alternative organic solvents and methods for the preparation of long-circulating and pH-sensitive liposomes containing cisplatin. J Liposome Res 2013; 23:220-7. [DOI: 10.3109/08982104.2013.795590] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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195
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Liposomes as sterile preparations and limitations of sterilisation techniques in liposomal manufacturing. Asian J Pharm Sci 2013. [DOI: 10.1016/j.ajps.2013.07.011] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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196
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Panurgines, novel antimicrobial peptides from the venom of communal bee Panurgus calcaratus (Hymenoptera: Andrenidae). Amino Acids 2013; 45:143-57. [DOI: 10.1007/s00726-013-1482-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Accepted: 02/23/2013] [Indexed: 10/27/2022]
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197
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Superior performance of liposomes over enzymatic amplification in a high-throughput assay for myoglobin in human serum. Anal Bioanal Chem 2013; 405:4017-26. [DOI: 10.1007/s00216-013-6807-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 01/24/2013] [Accepted: 01/29/2013] [Indexed: 11/28/2022]
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198
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Hou G, Niu J, Song F, Liu Z, Liu S. Studies on the interactions between ginsenosides and liposome by equilibrium dialysis combined with ultrahigh performance liquid chromatography-tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 923-924:1-7. [PMID: 23454302 DOI: 10.1016/j.jchromb.2013.01.035] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 01/27/2013] [Accepted: 01/31/2013] [Indexed: 10/27/2022]
Abstract
To study the interactions between components of Panax Ginseng and liposome biomembrane, we applied the equilibrium dialysis system combined with ultrahigh performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) approach to analyze and identify the bioactive components of ginseng. Moreover, the effect of pH value has also been investigated on their interactions between the ginsenosides of ginseng extract and biomembrane. The result shows that seven kinds of ginsenosides have obvious interactions with biomembrane in comparison with the standards in terms of tandem mass spectrometry (MS/MS) data along with retention time, including four panaxadiol ginsenosides (Rb1, Rb2, Rc, Rd) and three panaxatriol ginsenosides (Re, Rf, Rg2). The value of binding degree decreased with the increase of molecular weight. The sugar moieties which are attached to C-20 were the main factor affecting the binding degree of panaxadiol ginsenosides. The interactions between panaxadiol ginsenosides and biomembrane correlate to the type and number of sugar moieties in ginsenosides. The sugar moieties which are at C-6 and C-20 have been shown to influence the value of binding degree for panaxatriol ginsenosides. In addition, the pH value has been shown to have an impact on the interactions. Overall, ginsenoside Rd has a better absorption character among the seven ginsenosides. In the study, we have screened the potential bioactive components of ginseng in vitro using the equilibrium dialysis-UPLC-MS/MS method, and then predicted the potential bioactivities of ginseng, which contribute to the investigation of the efficacy of ginseng.
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Affiliation(s)
- Guangyue Hou
- Changchun Center of Mass Spectrometry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
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199
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Miladi K, Sfar S, Fessi H, Elaissari A. Drug carriers in osteoporosis: preparation, drug encapsulation and applications. Int J Pharm 2013; 445:181-95. [PMID: 23376227 DOI: 10.1016/j.ijpharm.2013.01.031] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2012] [Revised: 12/10/2012] [Accepted: 01/16/2013] [Indexed: 01/23/2023]
Abstract
Carriers are largely used to enhance therapy efficiency via the encapsulation of active molecules. The encapsulation enhances the stability of drug molecules, improves the targeting properties and prolongs pharmacological activity via continuous local release of active molecules. The aim of this review is to report the carrier systems used in osteoporosis therapy. This state of the art research has mainly focused on describing all types of carriers used in this area, their elaboration and properties, the drug characteristics used in such specific application, and drug release and efficiency. In this field, various processes have been used in order to obtain well-defined capsules, spheres and more complex carriers. In this exhaustive review, each process is described, illustrated and discussed.
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Affiliation(s)
- K Miladi
- University of Lyon, F-69622, Lyon, France
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Ismail MF, Elmeshad AN, Salem NAH. Potential therapeutic effect of nanobased formulation of rivastigmine on rat model of Alzheimer's disease. Int J Nanomedicine 2013; 8:393-406. [PMID: 23378761 PMCID: PMC3558309 DOI: 10.2147/ijn.s39232] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Background To sustain the effect of rivastigmine, a hydrophilic cholinesterase inhibitor, nanobased formulations were prepared. The efficacy of the prepared rivastigmine liposomes (RLs) in comparison to rivastigmine solution (RS) was assessed in an aluminium chloride (AlCl3)-induced Alzheimer’s model. Methods Liposomes were prepared by lipid hydration (F1) and heating (F2) methods. Rats were treated with either RS or RLs (1 mg/kg/day) concomitantly with AlCl3 (50 mg/kg/day). Results The study showed that the F1 method produced smaller liposomes (67.51 ± 14.2 nm) than F2 (528.7 ± 15.5 nm), but both entrapped the same amount of the drug (92.1% ± 1.4%). After 6 hours, 74.2% ± 1.5% and 60.8% ± 2.3% of rivastigmine were released from F1 and F2, respectively. Both RLs and RS improved the deterioration of spatial memory induced by AlCl3, with RLs having a superior effect. Further biochemical measurements proved that RS and RLs were able to lower plasma C-reactive protein, homocysteine and asymmetric dimethy-larginine levels. RS significantly attenuated acetylcholinesterase (AChE) activity, whereas Na+/K+-adenosine triphosphatase (ATPase) activity was enhanced compared to the AlCl3-treated animals; however, RLs succeeded in normalization of AChE and Na+/K+ ATPase activities. Gene-expression profile showed that cotreatment with RS to AlCl3-treated rats succeeded in exerting significant decreases in BACE1, AChE, and IL1B gene expression. Normalization of the expression of the aforementioned genes was achieved by coadministration of RLs to AlCl3-treated rats. The profound therapeutic effect of RLs over RS was evidenced by nearly preventing amyloid plaque formation, as shown in the histopathological examination of rat brain. Conclusion RLs could be a potential drug-delivery system for ameliorating Alzheimer’s disease.
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