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Prajapat VM, Aalhate M, Sriram A, Mahajan S, Maji I, Gupta U, Kumari D, Singh K, Kalia NP, Dua K, Singh SK, Singh PK. Amphotericin B loaded nanoemulsion: Optimization, characterization and in-vitro activity against L. donovani promastigotes. Parasitol Int 2024; 100:102848. [PMID: 38159836 DOI: 10.1016/j.parint.2023.102848] [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: 08/18/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 01/03/2024]
Abstract
The present work aimed to develop and evaluate AmB-loaded nano-emulsion (AmB-NE) which will augment the solubility of AmB and lead to enhanced anti-leishmanial activity. The composition of AmB-NE was optimized by systematic screening followed by DoE-extreme vertices mixture design. The optimized NE revealed mean droplet size and PDI of 44.19 ± 5.5 nm, 0.265 ± 0.0723, respectively. The NE could efficiently encapsulate AmB with drug content and efficiency 83.509 ± 0.369% and 81.659 ± 0.013%, respectively. The presence of cholesterol and stearyl amine retarded the release (P < 0.0001) of AmB significantly compared to AmB suspension. The AmB-NE and pure AmB suspension demonstrated the IC50 of 0.06309 μg/mL and 0.3309 μg/mL against L.donovani promastigotes after 48 h incubation. The formulation was robust at all exaggerated stability conditions such as freeze-thaw and centrifugation. These findings indicate that AmB-NE is an attractive approach to treat visceral leishmaniasis with improved activity.
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Affiliation(s)
- Vikram Mohanlal Prajapat
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500037, India
| | - Mayur Aalhate
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500037, India
| | - Anitha Sriram
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500037, India
| | - Srushti Mahajan
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500037, India
| | - Indrani Maji
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500037, India
| | - Ujala Gupta
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500037, India
| | - Diksha Kumari
- Infectious Diseases Division, CSIR- Indian Institute of Integrative Medicine, Jammu 180001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Kuljit Singh
- Infectious Diseases Division, CSIR- Indian Institute of Integrative Medicine, Jammu 180001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Nitin Pal Kalia
- Department of Biological Science, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500037, India
| | - Kamal Dua
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Australia; Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, NSW 2007, Australia
| | - Sachin Kumar Singh
- Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, NSW 2007, Australia; School of Pharmaceutical Sciences, Lovely Professional University, Phagwara 144411, Punjab, India
| | - Pankaj Kumar Singh
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500037, India.
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2
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Liu L, Liang Z, Zhou Y, Pan H, Liu H. Effect of Amphotericin B on the thermodynamic stability, aggregation state, hemolysis and antifungal activity of Amphotericin B-nonionic surfactant micellar system. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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Jiang W, Fan Q, Wang J, Zhang B, Hao T, Chen Q, Li L, Chen L, Cui H, Li Z. PEGylated phospholipid micelles containing D-α-tocopheryl succinate as multifunctional nanocarriers for enhancing the antitumor efficacy of doxorubicin. Int J Pharm 2021; 607:120979. [PMID: 34371151 DOI: 10.1016/j.ijpharm.2021.120979] [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: 03/31/2021] [Revised: 07/21/2021] [Accepted: 08/03/2021] [Indexed: 11/26/2022]
Abstract
The aim of this investigation is to clarify the effect of D-α-tocopheryl succinate (vitamin E succinate, VES) and distearoylphosphatidyl ethanolamine-poly(ethylene glycol) (DSPE-PEG) on the encapsulation and controlled release of doxorubicin (DOX) in nano-assemblies and their consequences on the anti-tumor efficacy of DOX. DOX molecules were successfully loaded into the hybrid micelles with VES and DSPE-PEG (VDPM) via thin-film hydration method, exhibiting a small hydrodynamic particle size (~30 nm) and a weak negative zeta potential of around -5 mv. The obtained DOX-loaded VDPM2 displayed retarded DOX release at pH of 7.4, while substantially accelerated drug release at acidic pH of 5.0. Furthermore, the DOX-loaded VDPM2 exhibited substantially slower drug release rate at pH 7.4 compared with the drug-loaded VDPM1 or DPM preparation, benefiting for decreasing the premature DOX release during blood circulation. In vitro cell experiment indicated that DOX-loaded micelles (DPM, VDPM1 and VDPM2) improved the cellular uptake of DOX in 4T1 and MDA-MB-231 cells. The existence of VES component in the structure of DOX-loaded micelles had no obvious influence on the subcellular distribution of the encapsulated DOX molecules. Furthermore, the DOX-loaded VDPM2 exhibited more pronounced cytotoxicity to 4T1 and MDA-MB-231 cancerous cells compared with DOX-loaded DPM and free DOX solution. The hybrid nanocarriers including VES and DSPE-PEG selectively induced intracellular ROS accumulation and increased level of cytoplasmic calcium ion in cancerous cells by interacting with mitochondria and endoplasmic reticulum, bringing about the improved cytotoxicity of DOX. In vivo antitumor efficacy investigation of DOX-loaded VDPM2 against 4T1 xenograft-bearing mice displayed satisfied therapeutic activity with negligible systemic toxicity, as evidenced by the histological analysis and change of body weight. The proposed DOX-loaded VDPM preparation, as a mulifunctional chemotherapeutic nanomedicine system, holds great potential and bright prospect for clinical tumor therapy.
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Affiliation(s)
- Weiwei Jiang
- School of Pharmacy, Dalian Medical University, Dalian 116044, PR China
| | - Qing Fan
- Department of Pharmacy, The Second Affiliated Hospital of Dalian Medical University, Dalian 116027, PR China
| | - Jing Wang
- School of Pharmacy, Dalian Medical University, Dalian 116044, PR China
| | - Bingning Zhang
- School of Pharmacy, Dalian Medical University, Dalian 116044, PR China
| | - Tangna Hao
- Department of Pharmacy, The Second Affiliated Hospital of Dalian Medical University, Dalian 116027, PR China
| | - Qixian Chen
- School of Life Science and Biotechnology, Dalian University of Technology, 116024, PR China
| | - Lei Li
- School of Pharmacy, Dalian Medical University, Dalian 116044, PR China
| | - Lixue Chen
- School of Pharmacy, Dalian Medical University, Dalian 116044, PR China
| | - Hongxia Cui
- School of Pharmacy, Dalian Medical University, Dalian 116044, PR China
| | - Zhen Li
- School of Pharmacy, Dalian Medical University, Dalian 116044, PR China.
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Faustino C, Pinheiro L. Lipid Systems for the Delivery of Amphotericin B in Antifungal Therapy. Pharmaceutics 2020; 12:pharmaceutics12010029. [PMID: 31906268 PMCID: PMC7023008 DOI: 10.3390/pharmaceutics12010029] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 12/17/2019] [Accepted: 12/19/2019] [Indexed: 12/31/2022] Open
Abstract
Amphotericin B (AmB), a broad-spectrum polyene antibiotic in the clinic for more than fifty years, remains the gold standard in the treatment of life-threatening invasive fungal infections and visceral leishmaniasis. Due to its poor water solubility and membrane permeability, AmB is conventionally formulated with deoxycholate as a micellar suspension for intravenous administration, but severe infusion-related side effects and nephrotoxicity hamper its therapeutic potential. Lipid-based formulations, such as liposomal AmB, have been developed which significantly reduce the toxic side effects of the drug. However, their high cost and the need for parenteral administration limit their widespread use. Therefore, delivery systems that can retain or even enhance antimicrobial efficacy while simultaneously reducing AmB adverse events are an active area of research. Among those, lipid systems have been extensively investigated due to the high affinity of AmB for binding lipids. The development of a safe and cost-effective oral formulation able to improve drug accessibility would be a major breakthrough, and several lipid systems for the oral delivery of AmB are currently under development. This review summarizes recent advances in lipid-based systems for targeted delivery of AmB focusing on non-parenteral nanoparticulate formulations mainly investigated over the last five years and highlighting those that are currently in clinical trials.
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Affiliation(s)
| | - Lídia Pinheiro
- Correspondence: ; Tel.: +351-21-7946-400; Fax: +351-21-7946-470
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Jansook P, Pichayakorn W, Ritthidej GC. Amphotericin B-loaded solid lipid nanoparticles (SLNs) and nanostructured lipid carrier (NLCs): effect of drug loading and biopharmaceutical characterizations. Drug Dev Ind Pharm 2018; 44:1693-1700. [PMID: 29936874 DOI: 10.1080/03639045.2018.1492606] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
The aim of this study was to further investigate the effect of drug loading, drug entrapment efficiency, the drug release profiles and biopharmaceutical point of views of amphotericin B (AmB) lipid formulations, that is, degree of aggregation by UV-spectroscopy, in vitro hemolytic and antifungal activities. The optimum drug loading was 2.5% by weight corresponded to lipid fraction in formulation. Increasing of the drug entrapment was achieved by blending small amount of phospholipid in solid lipid nanoparticle (SLN) dispersions. All AmB lipid dispersions were less aggregated species and hemolytic response than Fungizone® indicating that lipid nanoparticles could reduce its toxicity. The sustained release profiles of AmB formulations depended on its aggregated form and entrapment efficiency. Too high AmB loaded (5% w/w) showed a biphasic drug release profile probably due to some amounts of drug deposited on the nanosphere surface including in continuous phase which promptly released. For in vitro antifungal testing, all AmB lipid formulations were equal and more effective than both AmB itself and Fungizone®. These observations suggested that AmB loaded SLNs, nanostructured lipid carriers and modified SLNs by blending lecithin could enhance AmB solubility, prolong release characteristics, reduce toxicity and improve antifungal activity.
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Affiliation(s)
- Phatsawee Jansook
- a Faculty of Pharmaceutical Sciences , Chulalongkorn University , Bangkok, Thailand
| | - Wiwat Pichayakorn
- b Faculty of Pharmaceutical Sciences , Prince of Songkla University , Songkhla, Hat-Yai, Songkhla , Thailand
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Wang Y, Ke X, Voo ZX, Yap SSL, Yang C, Gao S, Liu S, Venkataraman S, Obuobi SAO, Khara JS, Yang YY, Ee PLR. Biodegradable functional polycarbonate micelles for controlled release of amphotericin B. Acta Biomater 2016; 46:211-220. [PMID: 27686042 DOI: 10.1016/j.actbio.2016.09.036] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 08/31/2016] [Accepted: 09/25/2016] [Indexed: 12/28/2022]
Abstract
Amphotericin B (AmB), a poorly soluble and toxic antifungal drug, was encapsulated into polymeric micelles self-assembled from phenylboronic acid-functionalized polycarbonate/PEG (PEG-PBC) and urea-functionalized polycarbonate/PEG (PEG-PUC) diblock copolymers via hydrogen-bonding, boronate ester bond, and/or ionic interactions between the boronic acid group in the micellar core and amine group in AmB. Three micellar formulations were prepared: AmB/B micelles using PEG-PBC, AmB/U micelles using PEG-PUC and AmB/B+U mixed micelles using 1:1molar ratio of PEG-PBC and PEG-PUC. The average particle sizes of the micelles were in the range of 54.4-84.8nm with narrow size distribution and zeta potentials close to neutral. UV-Vis absorption analysis indicated that AmB/B micelles significantly reduced AmB aggregation status due to the interactions between AmB and the micellar core, while Fungizone® and AmB/U micelles had no effect. AmB/B+U mixed micelles exerted an intermediate effect. Both AmB/B micelles and AmB/B+U mixed micelles showed sustained drug release, with 48.6±2.1% and 59.2±1.8% AmB released respectively after 24hunder sink conditions, while AmB/U micelles displayed a burst release profile. All AmB-loaded micelles showed comparable antifungal activity to free AmB or Fungizone®, while AmB/B micelles and AmB/B+U mixed micelles were much less hemolytic than other formulations. Histological examination showed that AmB/B and AmB/B+U micelles led to a significantly lower number of apoptotic cells in the kidneys compared to Fungizone®, suggesting reduced nephrotoxicity of the micellar formulations in vivo. These phenylboronic acid-functionalized polymeric micelle systems are promising drug carriers for AmB to reduce non-specific toxicities without compromise in antifungal activity. STATEMENT OF SIGNIFICANCE There is a pressing need for a novel and cost-effective delivery system to reduce the toxicity induced by the antifungal agent, amphotericin B (AmB). In this study, phenylboronic acid-functionalized polycarbonate/PEG diblock copolymers were used to fabricate micelles for improved AmB-micelle interaction via the manipulation of hydrogen-bonding, boronate ester bond, ionic and hydrophobic interactions. Compared to free AmB and Fungizone®, the resultant micellar systems displayed improved stability while reducing non-specific toxicities without a compromise in antifungal activity. These findings demonstrate the potential of biodegradable functional polycarbonate micellar systems as promising carriers of AmB for the treatment of systemic fungal infections.
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Affiliation(s)
- Ying Wang
- Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore 117543, Singapore
| | - Xiyu Ke
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, Singapore 138669, Singapore
| | - Zhi Xiang Voo
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, Singapore 138669, Singapore
| | - Serene Si Ling Yap
- Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore 117543, Singapore
| | - Chuan Yang
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, Singapore 138669, Singapore
| | - Shujun Gao
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, Singapore 138669, Singapore
| | - Shaoqiong Liu
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, Singapore 138669, Singapore
| | - Shrinivas Venkataraman
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, Singapore 138669, Singapore
| | - Sybil Akua Okyerewa Obuobi
- Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore 117543, Singapore
| | - Jasmeet Singh Khara
- Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore 117543, Singapore
| | - Yi Yan Yang
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, Singapore 138669, Singapore.
| | - Pui Lai Rachel Ee
- Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore 117543, Singapore.
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Zhao J, Liu J, Wei T, Ma X, Cheng Q, Huo S, Zhang C, Zhang Y, Duan X, Liang XJ. Quercetin-loaded nanomicelles to circumvent human castration-resistant prostate cancer in vitro and in vivo. NANOSCALE 2016; 8:5126-5138. [PMID: 26875690 DOI: 10.1039/c5nr08966b] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Prostate cancer is highly prevalent and has become the second leading cause of cancer-related death in men. Its treatment remains a challenge in the clinic, particularly in patients who have advanced to "castration-resistant prostate cancer" (CRPC). Thus, more effective therapeutic strategies are required. Quercetin (QCT) is a natural flavonoid compound that has attracted increasing interest due to its anticancer activity. However, the clinical application of quercetin is largely hampered by its poor water solubility and low bioavailability. The objective of this study was to evaluate the therapeutic potential of novel QCT-loaded nanomicelles (M-QCTs) assembled from DSPE-PEG2000 for prostate cancer treatment. Our results indicated that QCT was efficiently encapsulated into micelles up to 1 mg mL(-1), which corresponds to a 450-fold increase of its water solubility. In vitro studies showed that the half-maximal inhibitory concentration (IC50) value (20.2 μM) of M-QCTs was much lower than free QCT (>200 μM). Thus, M-QCTs were considerably more effective than free QCT in proliferation inhibition and apoptosis induction of human androgen-independent PC-3 cells. Furthermore, M-QCTs showed superior antitumor efficacy and the tumor proliferation rate reduced by 52.03% compared to the control group in the PC-3 xenograft mouse model, possibly due to increased accumulation of M-QCTs at the tumor site by the enhanced permeability and retention (EPR) effect. Collectively, our studies demonstrated that M-QCTs significantly increase drug accumulation at the tumor site and exhibit superior anticancer activity in prostate cancer. Thus, our nanomicelle-based drug delivery system constitutes a promising and effective therapeutic strategy for clinical treatment.
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Affiliation(s)
- Jing Zhao
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050016, China. and CAS Center for Excellence in Nanoscience and CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, No. 11, First North Road, Zhongguancun, Beijing 100190, China. and Department of Histology and Embryology, Hebei Medical University, Shijiazhuang 050017, China
| | - Juan Liu
- CAS Center for Excellence in Nanoscience and CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, No. 11, First North Road, Zhongguancun, Beijing 100190, China.
| | - Tuo Wei
- CAS Center for Excellence in Nanoscience and CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, No. 11, First North Road, Zhongguancun, Beijing 100190, China.
| | - Xiaowei Ma
- CAS Center for Excellence in Nanoscience and CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, No. 11, First North Road, Zhongguancun, Beijing 100190, China.
| | - Qiang Cheng
- Laboratory of Nucleic Acid Technology, Institute of Molecular Medicine, Peking University, Beijing 100871, China
| | - Shuaidong Huo
- CAS Center for Excellence in Nanoscience and CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, No. 11, First North Road, Zhongguancun, Beijing 100190, China.
| | - Chunqiu Zhang
- CAS Center for Excellence in Nanoscience and CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, No. 11, First North Road, Zhongguancun, Beijing 100190, China.
| | - Yanan Zhang
- Department of Histology and Embryology, Hebei Medical University, Shijiazhuang 050017, China
| | - Xianglin Duan
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050016, China.
| | - Xing-Jie Liang
- CAS Center for Excellence in Nanoscience and CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, No. 11, First North Road, Zhongguancun, Beijing 100190, China.
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Mobasheri M, Attar H, Rezayat Sorkhabadi SM, Khamesipour A, Jaafari MR. Solubilization Behavior of Polyene Antibiotics in Nanomicellar System: Insights from Molecular Dynamics Simulation of the Amphotericin B and Nystatin Interactions with Polysorbate 80. Molecules 2015; 21:E6. [PMID: 26712721 PMCID: PMC6273564 DOI: 10.3390/molecules21010006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 11/26/2015] [Accepted: 11/27/2015] [Indexed: 01/23/2023] Open
Abstract
Amphotericin B (AmB) and Nystatin (Nys) are the drugs of choice for treatment of systemic and superficial mycotic infections, respectively, with their full clinical potential unrealized due to the lack of high therapeutic index formulations for their solubilized delivery. In the present study, using a coarse-grained (CG) molecular dynamics (MD) simulation approach, we investigated the interaction of AmB and Nys with Polysorbate 80 (P80) to gain insight into the behavior of these polyene antibiotics (PAs) in nanomicellar solution and derive potential implications for their formulation development. While the encapsulation process was predominantly governed by hydrophobic forces, the dynamics, hydration, localization, orientation, and solvation of PAs in the micelle were largely controlled by hydrophilic interactions. Simulation results rationalized the experimentally observed capability of P80 in solubilizing PAs by indicating (i) the dominant kinetics of drugs encapsulation over self-association; (ii) significantly lower hydration of the drugs at encapsulated state compared with aggregated state; (iii) monomeric solubilization of the drugs; (iv) contribution of drug-micelle interactions to the solubilization; (v) suppressed diffusivity of the encapsulated drugs; (vi) high loading capacity of the micelle; and (vii) the structural robustness of the micelle against drug loading. Supported from the experimental data, our simulations determined the preferred location of PAs to be the core-shell interface at the relatively shallow depth of 75% of micelle radius. Deeper penetration of PAs was impeded by the synergistic effects of (i) limited diffusion of water; and (ii) perpendicular orientation of these drug molecules with respect to the micelle radius. PAs were solvated almost exclusively in the aqueous poly-oxyethylene (POE) medium due to the distance-related lack of interaction with the core, explaining the documented insensitivity of Nys solubilization to drug-core compatibility in detergent micelles. Based on the obtained results, the dearth of water at interior sites of micelle and the large lateral occupation space of PAs lead to shallow insertion, broad radial distribution, and lack of core interactions of the amphiphilic drugs. Hence, controlled promotion of micelle permeability and optimization of chain crowding in palisade layer may help to achieve more efficient solubilization of the PAs.
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Affiliation(s)
- Meysam Mobasheri
- Department of Chemical Engineering, Science and Research Branch, Islamic Azad University, Tehran 1477893855, Iran.
| | - Hossein Attar
- Department of Chemical Engineering, Science and Research Branch, Islamic Azad University, Tehran 1477893855, Iran.
- Tofigh Daru Research and Engineering Company (TODACO), Tehran 1397116359, Iran.
| | - Seyed Mehdi Rezayat Sorkhabadi
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran 1417755469, Iran.
- Department of Toxicology and Pharmacology, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran 193956466, Iran.
| | - Ali Khamesipour
- Center for Research and Training in Skin Diseases and Leprosy, Tehran University of Medical Sciences, Tehran 1416613675, Iran.
| | - Mahmoud Reza Jaafari
- Biotechnology Research Center, Nanotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, P. O. Box: 91775-1365, Mashhad 917751365, Iran.
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A novel performing PEG-cholane nanoformulation for Amphotericin B delivery. Int J Pharm 2015; 495:41-51. [DOI: 10.1016/j.ijpharm.2015.08.070] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 08/20/2015] [Accepted: 08/21/2015] [Indexed: 12/20/2022]
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Ao L, Reichel D, Hu D, Jeong H, Kim KB, Bae Y, Lee W. Polymer micelle formulations of proteasome inhibitor carfilzomib for improved metabolic stability and anticancer efficacy in human multiple myeloma and lung cancer cell lines. J Pharmacol Exp Ther 2015; 355:168-73. [PMID: 26311812 DOI: 10.1124/jpet.115.226993] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 08/25/2015] [Indexed: 12/15/2022] Open
Abstract
Carfilzomib (CFZ) is a second-generation proteasome inhibitor drug approved for the treatment of multiple myeloma. Contrary to its excellent antimyeloma activity, CFZ has shown only limited efficacy in patients with solid malignancies. This lack of efficacy has been attributed in part to rapid degradation of CFZ in the body, possibly hindering the ability of CFZ to access the proteasome target in solid tumors. We hypothesized that polymer micelles, a currently Food and Drug Administration-approved nanoparticle drug delivery formulation, may protect CFZ from metabolic degradation and thus expand the clinical utility of the drug as an anticancer agent. To test our hypothesis, we prepared CFZ-entrapped polymer micelle particles with various compositions and drug release profiles and examined the extent of the CFZ metabolism in vitro using mouse liver homogenates. We also assessed the cytotoxic activities of the CFZ-entrapped micelle formulations in human cancer cell lines derived from B lymphocytes (RPMI-8226) and the lung (H460). Our data indicated that polymer micelle-based formulations can improve metabolic stability and cytotoxic effects of CFZ compared with free CFZ in human cancer cell lines tested. Taken together, these results suggest that polymer micelles may have potential as a delivery system for CFZ with an extended therapeutic utility for nonhematologic malignancies in the future.
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Affiliation(s)
- Lin Ao
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky (L.A., D.R., K.B.K., Y.B.); Department of Pharmacy Practice, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois (D.H., H.J.); and College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Korea (W.L.)
| | - Derek Reichel
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky (L.A., D.R., K.B.K., Y.B.); Department of Pharmacy Practice, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois (D.H., H.J.); and College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Korea (W.L.)
| | - Di Hu
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky (L.A., D.R., K.B.K., Y.B.); Department of Pharmacy Practice, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois (D.H., H.J.); and College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Korea (W.L.)
| | - Hyunyoung Jeong
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky (L.A., D.R., K.B.K., Y.B.); Department of Pharmacy Practice, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois (D.H., H.J.); and College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Korea (W.L.)
| | - Kyung Bo Kim
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky (L.A., D.R., K.B.K., Y.B.); Department of Pharmacy Practice, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois (D.H., H.J.); and College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Korea (W.L.)
| | - Younsoo Bae
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky (L.A., D.R., K.B.K., Y.B.); Department of Pharmacy Practice, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois (D.H., H.J.); and College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Korea (W.L.)
| | - Wooin Lee
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky (L.A., D.R., K.B.K., Y.B.); Department of Pharmacy Practice, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois (D.H., H.J.); and College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Korea (W.L.)
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11
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Anticancer efficacy and toxicokinetics of a novel paclitaxel-clofazimine nanoparticulate co-formulation. Drug Deliv Transl Res 2015; 5:257-67. [PMID: 25795051 DOI: 10.1007/s13346-015-0222-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Contemporary chemotherapy is limited by disseminated, resistant cancer. Targeting nanoparticulate drug delivery systems that encapsulate synergistic drug combinations are a rational means to increase the therapeutic index of chemotherapeutics. A lipopolymeric micelle co-encapsulating an in vitro optimized, synergistic fixed-ratio combination of paclitaxel (PTX) and clofazimine (B663) has been developed and called Riminocelles™. The present pre-clinical study investigated the acute toxicity, systemic exposure, repeat dose toxicity and efficacy of Riminocelles in parallel to Taxol® at an equivalent PTX dose of 10 mg/kg. Daily and weekly dosing schedules were evaluated against Pgp-expressing human colon adenocarcinoma (HCT-15) xenografts implanted subcutaneously in athymic mice. Riminocelles produced statistically significant (p < .05) tumor growth delays of 3.2 and 2.7 days for the respective schedules in contrast to Taxol delaying growth by 0.5 and 0.6 days. Using the control tumor doubling time of 4.2 days, tumor-cell-kill values of 0.23 for Riminocelles and 0.04 for Taxol following daily schedules were calculated. A significant weight loss of 5.7% after 14 days (p < 0.05) relative to the control group (n = 8) was observed for the daily Taxol group whereas Riminocelles did not incur significant weight loss neither were blood markers of toxicity elevated after acute administration (n = 3). The safety and efficacy of Riminocelles is statistically superior to Taxol. However, passive tumor targeting was not achieved and the tumor burden progressed quickly. Prior to further animal studies, the in vivo thermodynamic instability of the simple lipopolymeric micellular delivery system requires improvement so as to maintain and selectively deliver the fixed-ratio drug combination.
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Caldeira LR, Fernandes FR, Costa DF, Frézard F, Afonso LCC, Ferreira LAM. Nanoemulsions loaded with amphotericin B: a new approach for the treatment of leishmaniasis. Eur J Pharm Sci 2015; 70:125-31. [PMID: 25660615 DOI: 10.1016/j.ejps.2015.01.015] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 01/07/2015] [Accepted: 01/27/2015] [Indexed: 10/24/2022]
Abstract
This work aimed to develop nanoemulsions (NE) containing cholesterol and Amphotericin B (AmB) evaluating the influence of a lipophilic amine (stearylamine; STE) on drug encapsulation efficiency (EE), cytotoxicity on macrophages and in vitro antileishmanial activity. The EE of AmB in NE was nearly 100% regardless of STE concentration. Stability studies showed that AmB-loaded NE with or without STE were stable revealing that AmB content and EE remained constant after 180days. In significant contrast, the EE for AmB in NE without cholesterol drastically decreased showing that this co-surfactant significantly improved the retention of drug in NE. The electronic absorption and circular dichroism (CD) data revealed that the signal characteristic of self-associated free AmB, the most toxic form to the host cells, was virtually absent in the spectra of AmB-loaded NE. In agreement, NE-induced toxicity toward macrophages was significantly lower than that observed for the conventional AmB. STE enhanced both cytotoxicity and the activity against intracellular amastigotes of AmB-loaded NE. However, selectivity index values for AmB-loaded NE were considerably higher than that observed for conventional AmB. AmB-loaded and cholesterol-stabilized NE constitutes an attractive alternative for the treatment of leishmaniasis.
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Affiliation(s)
- Leila Rodrigues Caldeira
- Department of Pharmaceutics, Faculty of Pharmacy, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627, 31270-901 Belo Horizonte, Minas Gerais, Brazil
| | - Flaviana Ribeiro Fernandes
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627, 31270-901 Belo Horizonte, Minas Gerais, Brazil
| | - Daniel Ferreira Costa
- Department of Pharmaceutics, Faculty of Pharmacy, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627, 31270-901 Belo Horizonte, Minas Gerais, Brazil
| | - Frédéric Frézard
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627, 31270-901 Belo Horizonte, Minas Gerais, Brazil
| | - Luís Carlos Crocco Afonso
- Department of Biological Sciences, Institute of Biological and Exact Sciences, Federal University of Ouro Preto (UFOP), Morro do Cruzeiro, 35400-000 Ouro Preto, Minas Gerais, Brazil
| | - Lucas Antônio Miranda Ferreira
- Department of Pharmaceutics, Faculty of Pharmacy, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627, 31270-901 Belo Horizonte, Minas Gerais, Brazil.
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Grandhi TSP, Potta T, Taylor DJ, Tian Y, Johnson RH, Meldrum DR, Rege K. Sensitizing cancer cells to TRAIL-induced death by micellar delivery of mitoxantrone. Nanomedicine (Lond) 2014; 9:1775-88. [DOI: 10.2217/nnm.13.125] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
TNFα-related apoptosis-inducing ligand (TRAIL) induces death selectively in cancer cells. However, subpopulations of cancer cells are either resistant to or can develop resistance to TRAIL-induced death. As a result, strategies that overcome this resistance are currently under investigation. We have recently identified several US FDA-approved drugs with TRAIL-sensitization activity against prostate, breast and pancreatic cancer cells. Mitoxantrone, a previously unknown TRAIL sensitizer identified in the screen, was successfully encapsulated in methoxy-, amine- and carboxyl-terminated PEG-DSPE micelles in order to facilitate delivery of the drug to cancer cells. All three micelle types were extensively characterized for their physicochemical properties and evaluated for their ability to sensitize cancer cells to TRAIL-induced death. Our results indicate that micelle-encapsulated mitoxantrone can be advantageously employed in synergistic treatments with TRAIL, leading to a biocompatible delivery system and amplified cell killing activity for combination chemotherapeutic cancer treatments. Original submitted 11 September 2012; Revised submitted 19 June 2013
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Affiliation(s)
- Taraka Sai Pavan Grandhi
- Harrington Biomedical Engineering, Arizona State University, Tempe, AZ 85287, USA
- Center for Biosignatures Discovery Automation, The Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Thrimoorthy Potta
- Chemical Engineering, Arizona State University, Tempe, AZ 85287, USA
| | - David J Taylor
- Chemical Engineering, Arizona State University, Tempe, AZ 85287, USA
| | - Yanqing Tian
- Center for Biosignatures Discovery Automation, The Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Roger H Johnson
- Center for Biosignatures Discovery Automation, The Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
- Center for the Convergence of Physical Sciences & Oncology (PS-OC), Arizona State University, Tempe, AZ 85287, USA
| | - Deirdre R Meldrum
- Center for Biosignatures Discovery Automation, The Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
- Center for the Convergence of Physical Sciences & Oncology (PS-OC), Arizona State University, Tempe, AZ 85287, USA
- Electrical Engineering, Arizona State University, Tempe, AZ 85287, USA
| | - Kaushal Rege
- Harrington Biomedical Engineering, Arizona State University, Tempe, AZ 85287, USA
- Chemical Engineering, Arizona State University, Tempe, AZ 85287, USA
- Center for the Convergence of Physical Sciences & Oncology (PS-OC), Arizona State University, Tempe, AZ 85287, USA
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Shan-Bin G, Yue T, Ling-Yan J. Long-term sustained-released in situ gels of a water-insoluble drug amphotericin B for mycotic arthritis intra-articular administration: preparation, in vitro and in vivo evaluation. Drug Dev Ind Pharm 2014; 41:573-82. [PMID: 24502270 DOI: 10.3109/03639045.2014.884129] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Amphotericin B (AMB) was often used in intra-articular injection administration for fungal arthritis, because it could often bring a satisfactory therapeutic efficacy and a minimum systemic toxic side effect. However, because of the multiple operations and the frequent injections, the compliance of the patients was bad. Therefore, to develop a long-term sustained-released preparation of AMB for mycotic arthritis intra-articular administration is of great significance. The purpose of present study was to develop a long-term sustained-released in situ gel of a water-insoluble drug AMB for mycotic arthritis intra-articular administration. Based on the evaluations of the in vitro properties of the formulations, the formulation containing 10% (w/w) ethanol, 15% (w/w) PG, 0.75% (w/w) HA, 5% (w/w) purified soybean oil, 0.03% (w/w) α-tocopherol, 15% (w/w) water and 55% (w/w) glyceryl monooleate was selected as a suitable intra-articular injectable in situ gel drug delivery system for water-insoluble drug AMB. Furthermore, the results of the in vivo study on rabbits showed that the selected formulation was a safe and effective long-term sustained-released intra-articular injectable AMB preparation. Therefore, the presented in situ AMB gel could reduce the frequency of the administration in the AMB treatment of fungal arthritis, and then would get a good patient compliance.
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Liu X, Su S, Wei F, Rong X, Yang Z, Liu J, Li M, Wu Y. Construction of nanoparticles based on amphiphilic copolymers of poly(γ-glutamic acid co-l-lactide)-1,2-dipalmitoyl-sn-glycero-3-phosphoethanolamine as a potential drug delivery carrier. J Colloid Interface Sci 2014; 413:54-64. [DOI: 10.1016/j.jcis.2013.09.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Revised: 09/04/2013] [Accepted: 09/09/2013] [Indexed: 01/09/2023]
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Les KA, Mohamed-Ahmed AHA, Balan S, Choi JW, Martin D, Yardley V, Powell K, Godwin A, Brocchini S. Poly(methacrylic acid) complexation of amphotericin B to treat neglected diseases. Polym Chem 2014. [DOI: 10.1039/c3py01051a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Mohamed-Ahmed AHA, Les KA, Seifert K, Croft SL, Brocchini S. Noncovalent complexation of amphotericin-B with Poly(α-glutamic acid). Mol Pharm 2013; 10:940-50. [PMID: 23234235 DOI: 10.1021/mp300339p] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A noncovalent complex of amphotericin B (AmB) and poly(α-glutamic acid) (PGA) was prepared to develop a safe and stable formulation for the treatment of leishmaniasis. The loading of AmB in the complex was in the range of ∼20-50%. AmB was in a highly aggregated state with an aggregation ratio often above 2.0. This complex (AmB-PGA) was shown to be stable and to have reduced toxicity to human red blood cells and KB cells compared to the parent compound; cell viability was not affected at an AmB concentration as high as 50 and 200 μg/mL respectively. This AmB-PGA complex retained AmB activity against intracellular Leishmania major amastigotes in the differentiated THP-1 cells with an EC50 of 0.07 ± 0.03-0.08 ± 0.01 μg/mL, which is similar to Fungizone (EC50 of 0.06 ± 0.01 μg/mL). The in vitro antileishmanial activity of the complex against Leishmania donovani was retained after storage at 37 °C for 7 days in the form of a solution (EC50 of 0.27 ± 0.03 to 0.35 ± 0.04 μg/mL) and for 30 days as a solid (EC50 of 0.41 ± 0.07 to 0.63 ± 0.25 μg/mL). These encouraging results indicate that the AmB-PGA complex has the potential for further development.
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Affiliation(s)
- Abeer H A Mohamed-Ahmed
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K
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Kumar R, Kulkarni A, Nagesha DK, Sridhar S. In vitro evaluation of theranostic polymeric micelles for imaging and drug delivery in cancer. Theranostics 2012; 2:714-22. [PMID: 22896773 PMCID: PMC3418926 DOI: 10.7150/thno.3927] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2011] [Accepted: 01/14/2012] [Indexed: 11/05/2022] Open
Abstract
For the past decade engineered nanoplatforms have seen a momentous progress in developing a multimodal theranostic formulation which can be simultaneously used for imaging and therapy. In this report we describe the synthesis and application of theranostic phospholipid based polymeric micelles for optical fluorescence imaging and controlled drug delivery. CdSe quantum dots (QDs) and anti-cancer drug, doxorubicin (Dox), were co-encapsulated into the hydrophobic core of the micelles. The micelles are characterized using optical spectroscopy for characteristic absorbance and fluorescence features of QDs and Dox. TEM and DLS studies yielded a size of <50 nm for the micellar formulations with very narrow size distribution. A sustained release of the drug was observed from the co-encapsulated micellar formulation. In vitro optical fluorescence imaging and cytotoxicity studies with HeLa cell line demonstrated the potential of these micellar systems as efficient optical imaging and therapeutic probes.
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Feng L, Mumper RJ. A critical review of lipid-based nanoparticles for taxane delivery. Cancer Lett 2012; 334:157-75. [PMID: 22796606 DOI: 10.1016/j.canlet.2012.07.006] [Citation(s) in RCA: 101] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2012] [Accepted: 07/04/2012] [Indexed: 12/24/2022]
Abstract
Nano-based delivery systems have attracted a great deal of attention in the past two decades as a strategy to overcome the low therapeutic index of conventional anticancer drugs and delivery barriers in solid tumors. Myriads of preclinical studies have been focused on developing nano-based formulations to effectively deliver taxanes, one of the most important and most prescribed anticancer drug types in the clinic. Given the hydrophobic property of taxanes, lipid-based NPs, serve as a viable alternative delivery system. This critical review will provide an overview and perspective of the advancement of lipid-based nanoparticles for taxane delivery. Currently available formulations of taxanes and their drawbacks as well as criteria for idea taxane delivery system will be discussed.
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Affiliation(s)
- Lan Feng
- Center for Nanotechnology in Drug Delivery, Division of Molecular Pharmaceutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
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Diezi TA, Kwon G. Amphotericin B/sterol co-loaded PEG-phospholipid micelles: effects of sterols on aggregation state and hemolytic activity of amphotericin B. Pharm Res 2011; 29:1737-44. [PMID: 22130733 DOI: 10.1007/s11095-011-0626-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Accepted: 11/03/2011] [Indexed: 11/25/2022]
Abstract
PURPOSE To elucidate the effect of sterols on the aggregation of amphotericin B (AmB) in PEG-phospholipid micelles and its consequences on the hemolytic activity of AmB. METHODS AmB-incorporated PEG-phospholipid micelles co-loaded with ergosterol, cholesterol, or 7-dehydrocholesterol were prepared at 4:1:1 and 20:5:1 ratios of polymer-to-sterol-to-AmB. The aggregation state of AmB was elucidated by UV-vis spectroscopy. AmB/sterol co-loaded PEG-phospholipid micelles were incubated with red blood cells and the hemolytic activity of AmB assessed by measurement of free hemoglobin. RESULTS AmB in PEG-phospholipid micelles stayed mostly in a deaggregated state in the absence of sterol or with cholesterol, but aggregated in the presence of ergosterol or 7-dehydrocholesterol. The fraction of aggregated AmB in PEG-phospholipid micelles was lower at the 20:5:1 ratio. In an aggregated state or in the absence of sterol, AmB caused rapid and complete hemolysis. In contrast, deaggregated AmB co-loaded with cholesterol caused slower and incomplete hemolysis, especially at a 20:5:1 ratio. CONCLUSIONS The aggregation state of AmB in PEG-phospholipid micelles was sterol dependant. AmB/cholesterol co-loaded PEG-phospholipid micelles caused low in vitro hemolysis due to deaggregation of AmB and micellar stability, presumably owing to cholesterol/phospholipid versus cholesterol/AmB interactions in the interior core region.
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Construction of amphiphilic copolymer nanoparticles based on hyperbranched Poly (Amine-Ester) and 1,2-Dipalmitoyl-Sn-Glycero-3-Phosphoethanolamine as drug carriers for cancer therapy. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2011; 7:945-54. [DOI: 10.1016/j.nano.2011.04.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2011] [Revised: 04/13/2011] [Accepted: 04/18/2011] [Indexed: 11/22/2022]
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Jee JP, McCoy A, Mecozzi S. Encapsulation and release of Amphotericin B from an ABC triblock fluorous copolymer. Pharm Res 2011; 29:69-82. [PMID: 21739321 DOI: 10.1007/s11095-011-0511-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2011] [Accepted: 06/10/2011] [Indexed: 01/08/2023]
Abstract
PURPOSE PEG-phospholipid-based micelles have been successfully used for the solubilization of several hydrophobic drugs but generally lack sustained stability in blood. Our novel PEG-Fluorocarbon-DSPE polymers were designed to increase stability and improve time-release properties of drug-loaded micelles. METHODS Novel ABC fluorous copolymers were synthesized, characterized, and used for encapsulation release of amphotericin B. FRET studies were used to study micelle stability. RESULTS The micelles formed by the new polymers showed lower critical micelle concentrations and higher viscosity cores than those formed by the polymers lacking the fluorous block. FRET studies indicated that fluorocarbon-containing micelles had increased stability in presence of human serum. Physicochemical properties and in vitro release profile of micelles loaded with Amphotericin B (AmB) were studied. CONCLUSIONS The effect of PEG length and fluorocarbon incorporation were investigated. The shorter hydrophilic PEG2K induced greater stability than PEG5K by decreasing the proportion of hydrophilic block of the polymer. The fluorocarbon placed between hydrophilic and hydrophobic block formed a fluorous shell contributing to the enhanced thermodynamic stability of micelles and to the drug sustained release. Polymer mPEG2K-F(10)-DSPE, bearing both a fluorocarbon block and a shorter mPEG, showed the greatest stability and the longest half-life for AmB release.
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Affiliation(s)
- Jun-Pil Jee
- School of Pharmacy, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, USA
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Diezi TA, Takemoto JK, Davies NM, Kwon GS. Pharmacokinetics and nephrotoxicity of amphotericin B-incorporated poly(ethylene glycol)-block-poly(N-hexyl stearate l-aspartamide) micelles. J Pharm Sci 2010; 100:2064-70. [PMID: 21491436 DOI: 10.1002/jps.22445] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2010] [Revised: 10/16/2010] [Accepted: 11/16/2010] [Indexed: 11/08/2022]
Abstract
The purpose of this investigation was to study the pharmacokinetics and nephrotoxicity of amphotericin B (AmB), incorporated in poly(ethylene glycol)-block-poly(N-hexyl stearate l-aspartamide) (PEG-b-PHSA) micelles (AmB/PEG-b-PHSA). After AmB/PEG-b-PHSA or AmB for injection, United States Pharmacopeia (USP), was dosed intravenously in rats (0.8 mg/kg), serum was collected over 72 h, and organs collected at 72 h for AmB analysis. To test for the nephrotoxicity caused by AmB, renal markers of damage were assessed 24 h after a single injection of AmB/PEG-b-PHSA or AmB for injection, USP, focusing on detection of urinary enzymes. PEG-b-PHSA micelles caused a significantly lower area under serum concentration curve and higher clearance relative to AmB for injection, USP. PEG-b-PHSA micelles lowered the distribution of AmB in liver and lung tissues, but did not significantly lower the level of AmB in the kidneys relative to AmB for injection, USP. However, urine levels of N-acetyl-β-glucosaminidase and γ-glutamyltransferase were significantly lower for AmB/PEG-b-PHSA relative to AmB for injection, USP. In summary, PEG-b-PHSA micelles reduced the nephrotoxicity of AmB, the dose-limiting toxicity of this important antifungal agent.
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Affiliation(s)
- Thomas A Diezi
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin-Madison, Madison, Wisconsin 53705-2222, USA
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Jain JP, Jatana M, Chakrabarti A, Kumar N. Amphotericin-B-loaded polymersomes formulation (PAMBO) based on (PEG)₃-PLA copolymers: an in vivo evaluation in a murine model. Mol Pharm 2010; 8:204-12. [PMID: 21138276 DOI: 10.1021/mp100267k] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This paper deals with in vivo evaluation of a new amphotericin-B-loaded polymersomes (PAMBO) formulation in terms of pharmacokinetics, toxicity, tissue distribution profile, and its efficacy in a murine model of disseminated candidiasis. Pharmacokinetic and tissue distribution studies of the PAMBO showed sustained levels of the drug in plasma as well as in target organs which harbor fungal and leishmanial infection. PAMBO was found to be much less toxic than Fungizone. It was observed that 700% increment in the dose is tolerated without observable toxicity which is supported by survival, biochemical, and histopathological results. PAMBO showed a significant improvement in the survival rate of immunosuppressed mice infected with Candida albicans as compared to control. It also showed better dose to dose (1 mg/kg) efficacy as compared to Fungizone and a significant improvement in the life expectancy at 3 and 5 mg/kg dose levels in the animals. Colony forming unit (CFU) counts in the target organs revealed significant reduction in Candida burden with PAMBO treatment. Kidney, spleen, and lung were cleared of infection, although liver was carrying a very low level of infection. Overall, PAMBO formulation is found to be more efficacious and less toxic in a fungal mice model.
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Affiliation(s)
- Jay Prakash Jain
- Department of Pharmaceutics, National Institute of Pharmaceutical Education & Research (NIPER), Sector 67, SAS Nagar-160062, India
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Gao H, Li M, Wu Y. Novel amphiphilic dextran copolymers nanoparticles for delivery of doxorubicin. J Appl Polym Sci 2010. [DOI: 10.1002/app.33459] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Diezi TA, Bae Y, Kwon GS. Enhanced stability of PEG-block-poly(N-hexyl stearate l-aspartamide) micelles in the presence of serum proteins. Mol Pharm 2010; 7:1355-60. [PMID: 20575526 DOI: 10.1021/mp100069p] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Polyethylene glycol-phospholipid micelles form a major class of nanocarriers in pharmacy and medicine due to proven capability in drug solubilization, sustained drug release, and evidence for targeted drug delivery in vivo. In this report, we have prepared micelles composed of PEG-block-poly(N-hexyl stearate l-aspartamide) (PEG-b-PHSA), having nine stearic acid side chains, and have studied their stability in the presence of serum proteins by Forster resonance energy transfer (FRET) experiments. In the presence of serum albumin, alpha and beta globulins, or gamma globulins, there are minimal changes in FRET over two hours in vitro, indicating integrity of PEG-b-PHSA micelles. In contrast, 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[amino(polyethylene glycol)-5000] (PEG-DSPE) micelles lose FRET over two hours in vitro, especially in the presence of alpha and beta globulins, indicating the disruption of PEG-DSPE micelles and leakage of fluorescent probes. Owing to the aliphatic nature of DSPE and PHSA, both PEG-b-PHSA and PEG-DSPE micelles efficiently solubilize amphotericin B (AmB), a poorly water-soluble antifungal agent used to combat systemic mycoses. However, only PEG-b-PHSA micelles gradually liberate AmB in the presence of alpha and beta globulins, based on time-dependent changes in the self-aggregation state of AmB, monitored by UV/vis spectroscopy. PEG-b-PHSA micelles are remarkably stable in the presence of serum proteins and a more stable alternative for poorly water-soluble drugs, which have been solubilized by PEG-DSPE micelles.
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Affiliation(s)
- Thomas A Diezi
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin-Madison, 777 Highland Avenue, Madison, Wisconsin 53705-2222, USA
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Falamarzian A, Lavasanifar A. Optimization of the hydrophobic domain in poly(ethylene oxide)-poly(varepsilon-caprolactone) based nano-carriers for the solubilization and delivery of Amphotericin B. Colloids Surf B Biointerfaces 2010; 81:313-20. [PMID: 20674292 DOI: 10.1016/j.colsurfb.2010.07.025] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2010] [Revised: 07/07/2010] [Accepted: 07/08/2010] [Indexed: 10/19/2022]
Abstract
The aim of the study was to develop a polymeric nano-carrier based on methoxy poly(ethylene oxide)-b-poly(epsilon-caprolactone) (MePEO-b-PCL) for the optimum solubilization and delivery of Amphotericin B (AmB). For this purpose, MePEO-b-PCL block co-polymers containing palmitoyl substituent on PCL (at a 100% substitution level) were synthesized through preparation of substituted monomer, that is, alpha-palmitoyl-epsilon-caprolactone, and further ring opening polymerization of this monomer by methoxy PEO (5000 g mol(-1)) using stannous octoate as catalyst. Prepared block co-polymers were characterized for their molecular weight by (1)H NMR and gel permeation chromatography, and assembled to polymeric nano-carriers. The self-assembly of synthesized MePEO-b-PPaCL to spherical particles of nanometer size range was shown by dynamic light scattering (DLS) and transmission electron microscopy (TEM). The efficacy of nano-carriers formed from this structure (abbreviated as MePEO-b-PPaCL) in comparison to unmodified MePEO-b-PCL and those with benzyl and cholesteryl substituent on PCL (abbreviated as MePEO-b-PBCL and MePEO-b-PChCL, respectively) on the solubilization and hemolytic activity of AmB against rat red blood cells was assessed. Under identical conditions, the maximum solubilization of AmB was achieved by nano-carriers prepared from MePEO-b-PPaCL (436 microg/mL), followed by MePEO-b-PChCL (355 microg/mL), MePEO-b-PBCL (296 microg/mL) and MePEO-b-PCL (222 microg/mL). The hemolytic activity of AmB was reduced the most by its encapsulation in MePEO-b-PChCL nano-particles which showed only 7% hemolysis at 30 microg/mL AmB concentration. This was followed by MePEO-b-PCL nano-particles which illustrated 15% hemolysis, MePEO-b-PPaCL with 40% hemolysis and MePEO-b-PBCL with 60% hemolysis at 30 microg/mL AmB concentrations, respectively. In contrast Fungizone showed 90% hemolysis at 30 microg/mL AmB concentration. Based on the improved solubility and reduced hemolytic activity, the MePEO-b-PChCL nano-carriers are considered as optimum structures for AmB delivery.
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Affiliation(s)
- Arash Falamarzian
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
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Pegylated Phospholipids-Based Self-Assembly with Water-Soluble Drugs. Pharm Res 2009; 27:361-70. [DOI: 10.1007/s11095-009-0029-6] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2009] [Accepted: 12/03/2009] [Indexed: 10/20/2022]
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Cheng W, Lim LY. Lipeo-sCT: A novel reversible lipidized salmon calcitonin derivative, its biophysical properties and hypocalcemic activity. Eur J Pharm Sci 2009; 37:151-9. [DOI: 10.1016/j.ejps.2009.02.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2008] [Revised: 02/05/2009] [Accepted: 02/06/2009] [Indexed: 11/15/2022]
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Combination antifungal therapy involving amphotericin B, rapamycin and 5-fluorocytosine using PEG-phospholipid micelles. Pharm Res 2008; 25:2056-64. [PMID: 18415047 DOI: 10.1007/s11095-008-9588-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2007] [Accepted: 04/02/2008] [Indexed: 10/22/2022]
Abstract
PURPOSE Rapamycin and 5-fluorocytosine (5-FC) are antifungal agents with unique mechanisms of activity, with potential for cooperative interaction with AmB. Combination antifungal therapy involving conventional AmB has been restricted by poor physical stability and compatibility with antifungal drugs and vehicles. METHODS AmB and rapamycin were encapsulated in 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-methoxy poly(ethylene glycol) (PEG-DSPE) micelles using a solvent evaporation method. The physical stability of micelle encapsulated AmB and rapamycin with 5-FC and saline was evaluated using dynamic light scattering (DLS). In vitro susceptibility of Candida albicans isolates to 5-FC and PEG-DSPE micelle solubilized AmB and rapamycin has been evaluated. Interactive effects have been quantified using a checkerboard layout. RESULTS In contrast with conventional AmB, PEG-DSPE micelles encapsulating AmB and rapamycin are compatible with saline and 5-FC over 12 h. The solubilized drugs retain high level of potency in vitro. The combination of solubilized AmB and rapamycin was indifferent, as fractional inhibitory concentration (FIC) index and combination index (CI) values were approximately 1. Combinations of solubilized AmB or rapamycin with 5-FC, and the three-drug combination were moderately synergistic since the FIC index and CI values were consistent less than 1. CONCLUSIONS These results indicate that AmB solubilized in PEG-DSPE micelles is compatible with solubilized rapamycin and 5-FC. The indifferent or moderately synergistic activity of combinations is encouraging and warrants further investigation in appropriate rodent models.
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