1
|
Branched PEG-modification: A new strategy for nanocarriers to evade of the accelerated blood clearance phenomenon and enhance anti-tumor efficacy. Biomaterials 2022; 283:121415. [PMID: 35217484 DOI: 10.1016/j.biomaterials.2022.121415] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 02/10/2022] [Accepted: 02/14/2022] [Indexed: 01/18/2023]
Abstract
PEGylation is one of the most successful technologies for reducing immunogenicity, improving the stability and circulation time of nanocarriers, and has been applied in the clinic for over three decades. However, linear PEG-modified nanocarriers have been found to induce anti-PEG IgM at the first injection, which triggers the accelerated blood clearance (ABC) phenomenon upon repeated injections. Furthermore, clinical and research evidence has revealed that anti-PEG antibodies also cause serious complement activation-related pseudoallergies (CARPA), which greatly reduce the safety of linear PEGylated nanocarriers. In this study, as an alternative to linear PEG, branched PEG was selected owing to its low antigenicity. We pioneer the use of branched PEG lipid derivatives [DSPE-mPEG2,n (n = 2, 10, and 20 kDa)] to modify nanoemulsions (PE2,n) and liposomes (PL2,n). Upon characterization, PE2,n and PL2,n showed similar physicochemical properties to linear DSPE-mPEG2000-modified nanocarriers in terms of size, polydispersity index (PDI), and zeta potential. However, our pharmacokinetics study surprisingly indicated that PE2,n and PL2,n did not induce the ABC phenomenon after repeated injection. This may be attributed to the fact that PE2,n and PL2,n induced noticeably lower levels of anti-PEG IgM than linear PEG-modified nanocarriers and did not activate the complement system. Furthermore, we are the first to investigate the anti-tumor efficacy of DSPE-mPEG2,n-modified liposomal doxorubicin (DOX). The pharmacodynamic experiments showed that DSPE-mPEG2,n-m-modified liposomal DOX had better in vivo anti-tumor effects than linear DSPE-mPEG2000-modified liposomes. Therefore, we speculate that DSPE-mPEG2,n-modified nanocarriers possess promising prospects in avoiding the ABC phenomenon, reducing CARPA, and improving the anti-tumor efficacy of encapsulated drugs.
Collapse
|
2
|
Nayak K, Misra M. Triamcinolone Acetonide-Loaded PEGylated Microemulsion for the Posterior Segment of Eye. ACS OMEGA 2020; 5:7928-7939. [PMID: 32309702 PMCID: PMC7160842 DOI: 10.1021/acsomega.9b04244] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 03/25/2020] [Indexed: 06/11/2023]
Abstract
Present work investigates the possibility of a polyethyleneglycolylated (PEGylated) microemulsion (ME) to deliver drug to the posterior segment of eye. Triamcinolone acetonide (TA), a widely used drug in intraocular diseases, was selected as the model drug. Based on solubility and emulsification capacity, components of microemulsion were selected and optimum formulation was obtained using a pseudoternary phase diagram. The optimized ratio of Capmul MCM C8 (oil): AccononMC8-2 (surfactant): Transcutol (cosurfactant): deionized water was 5:35.5:4.5:55. This was further PEGylated using 1,2-distearoylphosphatylethanolamine-polyethyleneglycol 2000 (DSPE-PEG 2000). This PEGylated ME loaded with TA was characterized and evaluated in vitro, ex vivo, and in vivo for topical ocular use. The developed PEGylated ME loaded with TA was homogenous, stable, and nonirritable to eye and had the ability to reach the posterior segment of eye on topical instillation.
Collapse
|
3
|
Nayak K, Misra M. PEGylated microemulsion for dexamethasone delivery to posterior segment of eye. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2020; 31:1071-1090. [PMID: 32149562 DOI: 10.1080/09205063.2020.1740964] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Dexamethasone (Dex) is one of the most commonly used anti-vascular endothelial growth factor (anti-VEGF) drugs being used in ocular diseases whether it is associated with anterior segment or posterior segment. For diseases of posterior segment of eye, Dex is delivered as intravitreal implant but the route used for the same is very invasive and poses several hazards on long term use. Thus, topical formulation with ability to outreach retina from ocular surface was intended. Thus, polyethylene glycolylated (PEGylated) microemulsion (ME) was attempted as it can cross the membranous barrier of eye (cornea, conjunctiva, and sclera) and remain afloat in fluidic barrier (aqueous humor, choroid, etc.) as well. Present investigation involved development of Dex-loaded PEGylated ME which was stable, non-toxic to ocular surface, capable to cross cornea and enhanced residence as well as availability of loaded drug in retina. The developed PEGylated ME had physicochemical properties like size (15.98 ± 3.05 nm), polydispersity index (0.25 ± 0.04), zeta potential (-0.04 ± 0.47 mV), percentage transmittance (99.84 ± 1.17%), and drug content (99.32 ± 3.21%). It showed sustained Dex release in in vitro conditions. It also displayed efficiency in enhancing retention of drugs in retina in in vivo pharmacokinetic study on Sprague-Dawley rats. PEGylated ME can retain the drug in retina of rats longer than simple eye drop solution via topical ocular route.
Collapse
Affiliation(s)
- Kritika Nayak
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Gandhinagar, Gujarat, India
| | - Manju Misra
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Gandhinagar, Gujarat, India.,Scientist B, B V Patel PERD Centre, Ahmedabad, Gujarat, India
| |
Collapse
|
4
|
Ahmad G, Mackenzie GG, Egan J, Amiji MM. DHA-SBT-1214 Taxoid Nanoemulsion and Anti-PD-L1 Antibody Combination Therapy Enhances Antitumor Efficacy in a Syngeneic Pancreatic Adenocarcinoma Model. Mol Cancer Ther 2019; 18:1961-1972. [PMID: 31439714 DOI: 10.1158/1535-7163.mct-18-1046] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 12/05/2018] [Accepted: 08/13/2019] [Indexed: 01/05/2023]
Abstract
The goal of this study was to evaluate combination of a novel taxoid, DHA-SBT-1214 chemotherapy, in modulating immune checkpoint marker expression and ultimately in improving antibody-based checkpoint blockade therapy in pancreatic adenocarcinoma (PDAC). DHA-SBT-1214 was encapsulated in an oil-in-water nanoemulsion and administered systemically in Panc02 syngeneic PDAC-bearing C57BL/6 mice. Following treatment with DHA-SBT-1214, expression levels of PD-L1 were measured and anti-PD-L1 antibody was administered in combination. The effects of combination therapy on efficacy and the molecular basis of synergistic effects were evaluated. PD-L1 expression was lower on Panc02 pancreatic tumor cells in vitro, which significantly increased after exposure to different chemotherapy drugs. Administration of DHA-SBT-1214, gemcitabine, and PD-L1 antibody alone failed to increase CD8+ T-cell infiltration inside tumors. However, combination of anti-PD-L1 therapy with a novel chemotherapy drug DHA-SBT-1214 in nanoemulsion (NE-DHA-SBT-1214) significantly enhanced CD8+ T-cell infiltration and the therapeutic effects of the anti-PD-L1 antibody. Furthermore, in the Panc02 syngeneic model, the NE-DHA-SBT-1214 combination therapy group reduced tumor growth to a higher extend than paclitaxel, nab-paclitaxel (Abraxane), gemcitabine, or single anti-PD-L1 antibody therapy groups. Our results indicate that NE-DHA-SBT-1214 stimulated immunogenic potential of PDAC and provided an enhanced therapeutic effect with immune checkpoint blockade therapy, which warrants further evaluation.
Collapse
Affiliation(s)
- Gulzar Ahmad
- Department of Pharmaceutical Sciences, School of Pharmacy, Northeastern University, Boston, Massachusetts
| | - Gerardo G Mackenzie
- Department of Nutrition, University of California at Davis, Davis, California
| | | | - Mansoor M Amiji
- Department of Pharmaceutical Sciences, School of Pharmacy, Northeastern University, Boston, Massachusetts.
| |
Collapse
|
5
|
Calcagno V, Vecchione R, Quagliariello V, Marzola P, Busato A, Giustetto P, Profeta M, Gargiulo S, Cicco CD, Yu H, Cassani M, Maurea N, Mancini M, Pellegrino T, Netti PA. Oil Core-PEG Shell Nanocarriers for In Vivo MRI Imaging. Adv Healthc Mater 2019; 8:e1801313. [PMID: 30614638 DOI: 10.1002/adhm.201801313] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 12/12/2018] [Indexed: 11/11/2022]
Abstract
Oil-in-water emulsions represent a promising carrier for in vivo imaging because of the possibility to convey poorly water-soluble species. To promote accumulation at the tumor site and prolong circulation time, reduction of carrier size and surface PEGylation plays a fundamental role. In this work a novel, simple method to design an oil-core/PEG-shell nanocarrier is reported. A PEG-shell is grown around a monodisperse oil-in-water nanoemulsion with a one-pot method, using the radical polymerization of poly(ethylene glycol)diacrylate. PEG polymerization is triggered by UV, obtaining a PEG-shell with tunable thickness. This core-shell nanosystem combines the eluding feature of the PEG with the ability to confine high payloads of lipophilic species. Indeed, the core is successfully loaded with a lipophilic contrast agent, namely super paramagnetic iron oxide nanocubes. Interestingly, it is demonstrated an in vitro and an in vivo MRI response of the nanocapsules. Additionally, when the nanosystem loaded with nanocubes is mixed with a fluorescent contrast agent, indo-cyanine green, a relevant in vitro photoacoustic effect is observed. Moreover, viability and cellular uptake studies show no significant cell cytotoxicity. These results, together with the choice of low cost materials and the scale up production, make this nanocarrier a potential platform for in vivo imaging.
Collapse
Affiliation(s)
- Vincenzo Calcagno
- Center for Advanced Biomaterials for Health Care@CRIB; Istituto Italiano di Tecnologia; Naples 80125 Italy
| | - Raffaele Vecchione
- Center for Advanced Biomaterials for Health Care@CRIB; Istituto Italiano di Tecnologia; Naples 80125 Italy
| | - Vincenzo Quagliariello
- Division of Cardiology; Istituto Nazionale Tumori -IRCCS- Fondazione G.Pascale; Naples 80131 Italy
| | - Pasquina Marzola
- Department of Computer Science; Research Area in Experimental and Applied Physics; University of Verona; Verona 37134 Italy
| | - Alice Busato
- Department of Computer Science; Research Area in Experimental and Applied Physics; University of Verona; Verona 37134 Italy
| | - Pierangela Giustetto
- Fujifilm VisualSonics Consultant; Joop Geesinkweg 140 Amsterdam 1114 AB The Netherlands
| | - Martina Profeta
- Center for Advanced Biomaterials for Health Care@CRIB; Istituto Italiano di Tecnologia; Naples 80125 Italy
| | - Sara Gargiulo
- Institute of Biostructures and Bioimaging; National Council of Research; Naples 80145 Italy
| | - Chiara Di Cicco
- Center for Advanced Biomaterials for Health Care@CRIB; Istituto Italiano di Tecnologia; Naples 80125 Italy
| | - Hui Yu
- Center for Advanced Biomaterials for Health Care@CRIB; Istituto Italiano di Tecnologia; Naples 80125 Italy
| | | | - Nicola Maurea
- Division of Cardiology; Istituto Nazionale Tumori -IRCCS- Fondazione G.Pascale; Naples 80131 Italy
| | - Marcello Mancini
- Institute of Biostructures and Bioimaging; National Council of Research; Naples 80145 Italy
| | | | - Paolo A. Netti
- Center for Advanced Biomaterials for Health Care@CRIB; Istituto Italiano di Tecnologia; Naples 80125 Italy
| |
Collapse
|
6
|
Cheng X, Wang C, Su Y, Luo X, Liu X, Song Y, Deng Y. Enhanced Opsonization-Independent Phagocytosis and High Response Ability to Opsonized Antigen–Antibody Complexes: A New Role of Kupffer Cells in the Accelerated Blood Clearance Phenomenon upon Repeated Injection of PEGylated Emulsions. Mol Pharm 2018; 15:3755-3766. [DOI: 10.1021/acs.molpharmaceut.8b00019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Xiaobo Cheng
- College of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, China
| | - Chunling Wang
- College of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, China
| | - Yuqing Su
- College of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, China
| | - Xiang Luo
- College of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, China
| | - Xinrong Liu
- College of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, China
| | - Yanzhi Song
- College of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, China
| | - Yihui Deng
- College of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, China
| |
Collapse
|
7
|
Ahmad G, Gattacecca F, El Sadda R, Botchkina G, Ojima I, Egan J, Amiji M. Biodistribution and Pharmacokinetic Evaluations of a Novel Taxoid DHA-SBT-1214 in an Oil-in-Water Nanoemulsion Formulation in Naïve and Tumor-Bearing Mice. Pharm Res 2018; 35:91. [PMID: 29520477 PMCID: PMC6151135 DOI: 10.1007/s11095-018-2349-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 01/17/2018] [Indexed: 12/15/2022]
Abstract
PURPOSE The main purpose of this study was to formulate an oil-in-water nanoemulsion of a next generation taxoid DHA-SBT-1214 and evaluate its biodistribution and pharmacokinetics. METHODS DHA-SBT-1214 was encapsulated in a fish oil containing nanoemulsion using a high pressure homogenization method. Following morphological characterization of the nanoemulsions, qualitative and quantitative biodistribution was evaluated in naïve and cancer stem cell-enriched PPT-2 human prostate tumor bearing mice. RESULTS DHA-SBT-1214 was successfully encapsulated up to 20 mg/ml in the nanoemulsion formulation and had an average oil droplet size of 200 nm. Using a DiR near infra-red dye encapsulated nanoemulsion, we have shown the delivery of nanoemulsion to mouse tumor region. By quantitative analysis, DHA-SBT-1214 encapsulated nanoemulsion demonstrated improved pharmacokinetic properties in plasma and different tissues as compared to its solution form. Furthermore, the nanoemulsions were stable and had slower in vitro drug release compared to its solution form. CONCLUSIONS The results from this study demonstrated effective encapsulation of the drug in a nanoemulsion and this nanoemulsion showed sustained plasma levels and enhanced tumor delivery relative to the solution form.
Collapse
Affiliation(s)
- Gulzar Ahmad
- Department of Pharmaceutical Sciences, School of Pharmacy, Northeastern University, Boston, Massachusetts, 02115-5000, USA
| | - Florence Gattacecca
- Institut de Recherche en Cancérologie de Montpellier IRCM, INSERM U1194, ICM, Université de Montpellier, Montpellier, France
| | - Rana El Sadda
- Institute of Chemical Biology and Drug Discovery, Stony Brook University, Stony Brook, New York, 11794-3400, USA
| | - Galina Botchkina
- Institute of Chemical Biology and Drug Discovery, Stony Brook University, Stony Brook, New York, 11794-3400, USA
- Department of Pathology, School of Medicine, Stony Brook University, Stony Brook, New York, 11794-8691, USA
| | - Iwao Ojima
- Institute of Chemical Biology and Drug Discovery, Stony Brook University, Stony Brook, New York, 11794-3400, USA
- Department of Chemistry, Stony Brook University, Stony Brook, New York, 11794-3400, USA
| | - James Egan
- Targagenix, Inc., 25 Health Sciences Drive, Stony Brook, New York, 11790-3382, USA
| | - Mansoor Amiji
- Department of Pharmaceutical Sciences, School of Pharmacy, Northeastern University, Boston, Massachusetts, 02115-5000, USA.
| |
Collapse
|
8
|
Siafaka PI, Üstündağ Okur N, Karavas E, Bikiaris DN. Surface Modified Multifunctional and Stimuli Responsive Nanoparticles for Drug Targeting: Current Status and Uses. Int J Mol Sci 2016; 17:E1440. [PMID: 27589733 PMCID: PMC5037719 DOI: 10.3390/ijms17091440] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 08/09/2016] [Accepted: 08/19/2016] [Indexed: 02/07/2023] Open
Abstract
Nanocarriers, due to their unique features, are of increased interest among researchers working with pharmaceutical formulations. Polymeric nanoparticles and nanocapsules, involving non-toxic biodegradable polymers, liposomes, solid lipid nanoparticles, and inorganic-organic nanomaterials, are among the most used carriers for drugs for a broad spectrum of targeted diseases. In fact, oral, injectable, transdermal-dermal and ocular formulations mainly consist of the aforementioned nanomaterials demonstrating promising characteristics such as long circulation, specific targeting, high drug loading capacity, enhanced intracellular penetration, and so on. Over the last decade, huge advances in the development of novel, safer and less toxic nanocarriers with amended properties have been made. In addition, multifunctional nanocarriers combining chemical substances, vitamins and peptides via coupling chemistry, inorganic particles coated by biocompatible materials seem to play a key role considering that functionalization can enhance characteristics such as biocompatibility, targetability, environmental friendliness, and intracellular penetration while also have limited side effects. This review aims to summarize the "state of the art" of drug delivery carriers in nanosize, paying attention to their surface functionalization with ligands and other small or polymeric compounds so as to upgrade active and passive targeting, different release patterns as well as cell targeting and stimuli responsibility. Lastly, future aspects and potential uses of nanoparticulated drug systems are outlined.
Collapse
Affiliation(s)
- Panoraia I Siafaka
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki 54124, Macedonia, Greece.
| | - Neslihan Üstündağ Okur
- Department of Pharmaceutical Technology, School of Pharmacy, Istanbul Medipol University, Beykoz 34810, Istanbul, Turkey.
| | | | - Dimitrios N Bikiaris
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki 54124, Macedonia, Greece.
| |
Collapse
|
9
|
Zhang J, Chen Y, Li X, Liang X, Luo X. The influence of different long-circulating materials on the pharmacokinetics of liposomal vincristine sulfate. Int J Nanomedicine 2016; 11:4187-97. [PMID: 27616886 PMCID: PMC5008646 DOI: 10.2147/ijn.s109547] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
PURPOSE This study was designed to improve the in vivo pharmacokinetics of long-circulating vincristine sulfate (VS)-loaded liposomes; three different long-circulating materials, chitosan, poly(ethylene glycol)-1,2-distearoyl sn-glycero-3-phosphatidylethanolamine (PEG-DSPE), and poly(ethylene glycol)-poly-lactide-co-glycolide (PEG-PLGA), were evaluated at the same coating molar ratio with the commercial product Marqibo(®) (vincristine sulfate liposome injection [VSLI]). MATERIALS AND METHODS VS-loaded liposomes were prepared by a pH gradient method and were then coated with chitosan, PEG-DSPE, or PEG-PLGA. Physicochemical properties, including the morphology, particle size, zeta potential, encapsulation efficiency (EE%), pH, drug loading, and in vitro release, were determined. Preservation stability and pharmacokinetic studies were performed to compare the membrane-coated liposomes with either commercially available liposomes or the VS solution. RESULTS The sphere-like morphology of the vesicles was confirmed by transmission electron microscope. Increased particle size, especially for the chitosan formulation, was observed after the coating process. However, the EE% was ~99.0% with drug loading at 2.0 mg/mL, which did not change after the coating process. The coating of long-circulation materials, except for chitosan, resulted in negatively charged and stable vesicles at physiological pH. The near-zero zeta potential exhibited by the PEG-DSPE formulation leads to a longer circulation lifetime and improved absorption for VS, when compared with the PEG-PLGA formulation. Compared with the commercial product, PEG was responsible for a higher plasma VS concentration and a longer half-life. CONCLUSION PEG-DSPE coating may be related to better absorption, based on the stability and a pharmacokinetic improvement in the blood circulation time.
Collapse
Affiliation(s)
- Jing Zhang
- Key Laboratory of Modern Preparation of TCM, Ministry of Education
| | - Yingchong Chen
- Key Laboratory of Modern Preparation of TCM, Ministry of Education
| | - Xiang Li
- Key Laboratory of Modern Preparation of TCM, Ministry of Education; State Key Laboratory of Innovative Drug and Efficient Energy-Saving Pharmaceutical Equipment, Jiangxi University of Traditional Chinese Medicine, Nanchang, People's Republic of China
| | - Xinli Liang
- Key Laboratory of Modern Preparation of TCM, Ministry of Education
| | - Xiaojian Luo
- State Key Laboratory of Innovative Drug and Efficient Energy-Saving Pharmaceutical Equipment, Jiangxi University of Traditional Chinese Medicine, Nanchang, People's Republic of China
| |
Collapse
|
10
|
Lupi M, Colombo C, Frapolli R, Ferrari R, Sitia L, Dragoni L, Bello E, Licandro SA, Falcetta F, Ubezio P, Bigini P, Salmona M, D'Incalci M, Morbidelli M, Moscatelli D. A biodistribution study of PEGylated PCL-based nanoparticles in C57BL/6 mice bearing B16/F10 melanoma. NANOTECHNOLOGY 2014; 25:335706. [PMID: 25074670 DOI: 10.1088/0957-4484/25/33/335706] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
One of the major drawbacks that limits the clinical application of nanoparticles is the lack of preliminary investigations related to their biocompatibility, biodegradability and biodistribution. In this work, biodegradable PEGylated polymer nanoparticles (NPs) have been synthesized by using macromonomers based on poly(ε-caprolaconte) oligomers. More in detail, NPs have been produced by adopting a surfactant-free semibatch emulsion polymerization process using PEG chains as a stabilizing agent. The NPs were also labeled with rhodamine B covalently bound to the NPs to quantitatively study their biodistribution in vivo. NPs were investigated in both in vitro and in vivo preclinical systems to study their biodistribution in mice bearing B16/F10 melanoma, as well as their biocompatibility and biodegradability. The NP concentration was evaluated in different tissues at several times after intravenous injection. The disappearance of the NPs from the plasma was biphasic, with distribution and elimination half-lives of 30 min and 15 h, respectively. NPs were retained in tumors and in filter organs for a long time, were still detectable after 7 d and maintained a steady concentration in the tumor for 120 h. 48 h after injection, 70 ± 15% of the inoculated NPs were excreted in the feces. The favorable tumor uptake, fast excretion and absence of cytotoxicity foster the further development of produced NPs as drug delivery carriers.
Collapse
Affiliation(s)
- M Lupi
- IRCCS-Istituto di Ricerche Farmacologiche Mario Negri, Via La Masa 19, I-20156, Milano, Italy
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Targeted Paclitaxel Delivery to Tumors Using Cleavable PEG-Conjugated Solid Lipid Nanoparticles. Pharm Res 2014; 31:2220-33. [DOI: 10.1007/s11095-014-1320-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Accepted: 01/28/2014] [Indexed: 10/25/2022]
|
12
|
Lee EH, Hong SS, Kim SH, Lee MK, Lim JS, Lim SJ. Computed tomography-guided screening of surfactant effect on blood circulation time of emulsions: application to the design of an emulsion formulation for paclitaxel. Pharm Res 2014; 31:2022-34. [PMID: 24549824 DOI: 10.1007/s11095-014-1304-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Accepted: 01/14/2014] [Indexed: 01/25/2023]
Abstract
PURPOSE In an effort to apply the imaging techniques currently used in disease diagnosis for monitoring the pharmacokinetics and biodisposition of particulate drug carriers, we sought to use computed tomography (CT) scanning methodology to investigate the impact of surfactant on the blood residence time of emulsions. METHODS We prepared the iodinated oil Lipiodol emulsions with different compositions of surfactants and investigated the impact of surfactant on the blood residence time of emulsions by CT scanning. RESULTS The blood circulation time of emulsions was prolonged by including Tween 80 or DSPE-PEG (polyethylene glycol 2000) in emulsions. Tween 80 was less effective than DSPE-PEG in terms of prolongation effect, but the blood circulating time of emulsions was prolonged in a Tween 80 content-dependent manner. As a proof-of-concept demonstration of the usefulness of CT-guided screening in the process of formulating drugs that need to be loaded in emulsions, paclitaxel was loaded in emulsions prepared with 87 or 65% Tween 80-containing surfactant mixtures. A pharmacokinetics study showed that paclitaxel loaded in 87% Tween 80 emulsions circulated longer in the bloodstream compared to those in 65% Tween 80 emulsions, as predicted by CT imaging. CONCLUSIONS CT-visible, Lipiodol emulsions enabled the simple evaluation of surfactant composition effects on the biodisposition of emulsions.
Collapse
Affiliation(s)
- Eun-Hye Lee
- Department of Bioscience and Bioengineering, Sejong University, Seoul, Republic of Korea
| | | | | | | | | | | |
Collapse
|
13
|
Abstract
Nanotechnology in drug delivery has been manifested into nanoparticles that can have unique properties both in vitro and in vivo, especially in targeted drug delivery to tumors. Numerous nanoparticle formulations have been designed and tested to great effect in small animal models, but the translation of the small animal results to clinical success has been limited. Successful translation requires revisiting the meaning of nanotechnology in drug delivery, understanding the limitations of nanoparticles, identifying the misconceptions pervasive in the field, and facing inconvenient truths. Nanoparticle approaches can have real impact in improving drug delivery by focusing on the problems at hand, such as enhancing their drug loading capacity, affinity to target cells, and spatiotemporal control of drug release.
Collapse
Affiliation(s)
- Kinam Park
- Departments of Biomedical Engineering and Pharmaceutics, Purdue University , West Lafayette, Indiana 47906, United States
| |
Collapse
|
14
|
A UFLC–MS/MS method coupled with one-step protein precipitation for determination of docetaxel in rat plasma: Comparative pharmacokinetic study of modified nanostructured lipid carrier. J Pharm Biomed Anal 2013; 83:202-8. [DOI: 10.1016/j.jpba.2013.05.025] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Revised: 05/15/2013] [Accepted: 05/17/2013] [Indexed: 11/20/2022]
|
15
|
Niu J, Huang A, Xiao Y, Su Z, Li H, Ping Q, Bao X, Li S, Chen Y, Sun M. Octreotide-mediated tumor cell uptake and intracellular pH-responsive drug delivery of the self-assembly supramolecular nanocarrier. J Drug Target 2013; 21:415-26. [PMID: 23597028 DOI: 10.3109/1061186x.2012.757771] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
In this study, DOX-loaded supramolecular nanocarrier (DLSC) was assembled by using two new amphiphilic polymers, octreotide-polyethylene glycol monostearate (OPMS) and N-octyl-N-succinyl O-carboxymethyl chitosan (OSCC). The characteristics of the DLSC were investigated. The results indicated that the significant pH-triggered release in vitro. The cellular uptake of DLSC was much higher than that of DOX-loaded OSCC micelles (DLOM) in the SMMC-7721 (somatostatin receptor (SSTR) over-expressed cell) cells, which suggested the SSTR-mediated properties. A considerable amount of drug entered the nucleus due to the pH-triggered deformation of the supramolecular structure and rapid release of drug in acidic endosomes of tumor cells. The killing efficacy was much higher than that of DLOM in the SMMC-7721. In S180 sarcoma-bearing KM mice, the biodistribution and therapeutic activity were studied. DLSC showed extended circulation time in plasma, decreasing drug concentrations in the heart and accumulating drug concentrations in the pancreas and tumor. In addition, minimized weight changes and cardiac toxicity, high suppression ratio of tumor growth and longer survival time were observed after intravenous injection of DLSC. The studies suggested that the supramolecular nanocarrier constructed of different designated polymers with multiple functions would be one of the most effective approaches for active targeting drug delivery.
Collapse
Affiliation(s)
- Jiangxiu Niu
- Department of Pharmacy, China Pharmaceutical University, 24 Tongjia Xiang , Nanjing 210009, PR China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Lim SB, Banerjee A, Önyüksel H. Improvement of drug safety by the use of lipid-based nanocarriers. J Control Release 2012; 163:34-45. [PMID: 22698939 DOI: 10.1016/j.jconrel.2012.06.002] [Citation(s) in RCA: 194] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2012] [Revised: 05/21/2012] [Accepted: 06/01/2012] [Indexed: 01/01/2023]
Abstract
Drug toxicity is an important factor that contributes significantly to adverse drug events in current healthcare practice. Application of lipid-based nanocarriers in drug formulation is one approach to improve drug safety. Lipid-based delivery systems include micelles, liposomes, solid lipid nanoparticles, nanoemulsions and nanosuspensions. These carriers are generally composed of physiological lipids well tolerated by human body. Delivery of water-insoluble drugs in these formulations increases their solubility and stability in aqueous media and eliminates the need for toxic co-solvents or pH adjustment to solubilize hydrophobic drugs. Association or encapsulation of peptides/proteins within lipid-based carriers protects the labile biologics against enzymatic degradation, hence reducing the therapeutic dose required and risk of dose-dependent toxicity. Most importantly, lipid-based nanocarriers alter the pharmacokinetics and biodistribution of drugs through passive and active targeting, leading to increased drug accumulation at target sites while significantly decreasing non-specific distribution to other tissues. Furthermore, surface modification of these nanocarriers reduces immunogenicity of drug-carrier complexes, imparts stealth by preventing opsonization and removal by phagocytes and minimizes interaction with circulating blood components. In view of heightening attention on drug safety in patient treatment, lipid-based nanocarrier is therefore an important and promising option for formulation of pharmaceutical products to improve treatment safety and efficacy.
Collapse
Affiliation(s)
- Sok Bee Lim
- Department of Biopharmaceutical Sciences, University of Illinois at Chicago, Chicago, IL 60612-7231, USA
| | | | | |
Collapse
|
17
|
Huynh L, Neale C, Pomès R, Allen C. Computational approaches to the rational design of nanoemulsions, polymeric micelles, and dendrimers for drug delivery. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2012; 8:20-36. [DOI: 10.1016/j.nano.2011.05.006] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Revised: 05/09/2011] [Accepted: 05/14/2011] [Indexed: 12/20/2022]
|
18
|
Araki T, Kono Y, Ogawara KI, Watanabe T, Ono T, Kimura T, Higaki K. Formulation and Evaluation of Paclitaxel-Loaded Polymeric Nanoparticles Composed of Polyethylene Glycol and Polylactic Acid Block Copolymer. Biol Pharm Bull 2012; 35:1306-13. [DOI: 10.1248/bpb.b12-0020] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Tomoya Araki
- Division of Pharmaceutical Sciences, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
| | - Yusuke Kono
- Division of Pharmaceutical Sciences, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
| | - Ken-ichi Ogawara
- Division of Pharmaceutical Sciences, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
| | - Takaichi Watanabe
- Department of Material and Energy Science, Graduate School of Environmental Science, Okayama University
| | - Tsutomu Ono
- Department of Material and Energy Science, Graduate School of Environmental Science, Okayama University
| | - Toshikiro Kimura
- Division of Pharmaceutical Sciences, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
| | - Kazutaka Higaki
- Division of Pharmaceutical Sciences, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
| |
Collapse
|
19
|
Kuai R, Yuan W, Li W, Qin Y, Tang J, Yuan M, Fu L, Ran R, Zhang Z, He Q. Targeted Delivery of Cargoes into a Murine Solid Tumor by a Cell-Penetrating Peptide and Cleavable Poly(ethylene glycol) Comodified Liposomal Delivery System via Systemic Administration. Mol Pharm 2011; 8:2151-61. [PMID: 21981683 DOI: 10.1021/mp200100f] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rui Kuai
- Key Laboratory of Drug Targeting and Drug Delivery Systems, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, P. R. China
| | - Wenmin Yuan
- Key Laboratory of Drug Targeting and Drug Delivery Systems, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, P. R. China
| | - Wanyu Li
- Pharmacy College of Chongqing Medical University, Chongqing, P. R. China
| | - Yao Qin
- Key Laboratory of Drug Targeting and Drug Delivery Systems, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, P. R. China
| | - Jie Tang
- Key Laboratory of Drug Targeting and Drug Delivery Systems, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, P. R. China
| | - Mingqing Yuan
- Key Laboratory of Drug Targeting and Drug Delivery Systems, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, P. R. China
| | - Ling Fu
- Key Laboratory of Drug Targeting and Drug Delivery Systems, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, P. R. China
| | - Rui Ran
- Key Laboratory of Drug Targeting and Drug Delivery Systems, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, P. R. China
| | - Zhirong Zhang
- Key Laboratory of Drug Targeting and Drug Delivery Systems, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, P. R. China
| | - Qin He
- Key Laboratory of Drug Targeting and Drug Delivery Systems, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, P. R. China
| |
Collapse
|
20
|
Pharmacokinetics and tissue distribution of docetaxel by liquid chromatography-mass spectrometry: evaluation of folate receptor-targeting amphiphilic copolymer modified nanostructured lipid carrier. J Chromatogr B Analyt Technol Biomed Life Sci 2011; 879:3721-7. [PMID: 22035980 DOI: 10.1016/j.jchromb.2011.10.015] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2011] [Revised: 10/09/2011] [Accepted: 10/10/2011] [Indexed: 11/21/2022]
Abstract
A novel amphiphilic copolymer, folate-poly(PEG-cyanoacrylate-co-cholesteryl cyanoacrylate) (FA-PEG-PCHL) was synthesized to modify docetaxel-loaded nanostructured lipid carrier to lead to a long blood circulating effect and targeting ability for the delivery of antitumor drug in cancer. To investigate the characteristics of modified docetaxel-loaded nanostructured lipid carrier in vivo, a liquid chromatography-mass spectrometry method was developed and validated for the determination of docetaxel in rat plasma and tumor-bearing mouse tissue samples. The biosamples were extracted by liquid-liquid extraction method with ether and separated on a C(18) column (150 mm×4.6 mm, 5 μm) using a mobile phase consisting of methanol-0.01% formic acid water (82:18, v/v). The standard curves were linear over the ranges of 0.01-4.0 μg/mL for plasma and 0.02-8.0 μg/g for tissue samples, respectively. The validated method was successfully applied to the pharmacokinetic study in rat plasma and tissue distribution study in mouse tissues of docetaxel after an intravenous administration of docetaxel injection (DTX injection), docetaxel-loaded nanostructured lipid carrier (DTX-NLC) and FA-PEG-PCHL-modified docetaxel-loaded nanostructured lipid carrier (FA-DTX-NLC), respectively. The results indicated that the FA-DTX-NLC led to significant differences in pharmacokinetic profile and tissue distribution. Nanostructured lipid carrier modified by FA-PEG-PCHL could be one of the promising suspensions for the delivery of docetaxel in cancer.
Collapse
|
21
|
PEG liposomalization of paclitaxel improved its in vivo disposition and anti-tumor efficacy. Int J Pharm 2011; 412:132-41. [DOI: 10.1016/j.ijpharm.2011.04.008] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2010] [Revised: 02/25/2011] [Accepted: 04/03/2011] [Indexed: 11/23/2022]
|
22
|
Kandadi P, Syed MA, Goparaboina S, Veerabrahma K. Brain specific delivery of pegylated indinavir submicron lipid emulsions. Eur J Pharm Sci 2011; 42:423-32. [PMID: 21292000 DOI: 10.1016/j.ejps.2011.01.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2010] [Revised: 01/05/2011] [Accepted: 01/25/2011] [Indexed: 11/27/2022]
Abstract
The aim of this study was to develop stable parenteral pegylated indinavir submicron lipid emulsions (SLEs) for improving brain specific delivery. The O/W SLEs were prepared by homogenization and ultra sonication process. The sizes of oil globules varied from 241.5 to 296.4nm and zeta potential from -26.6 to -42.4mV. During in vitro drug release studies the cumulative amount of drug released within 12h from SLE-5, DSP2-3 and DPP5-3 was 71.8±0.76, 66.09±1.45 and 68.33±1.29, respectively. The total drug content and entrapment efficiencies were determined. The optimized formulations were stable for the effect of centrifugal stress, thermal stress, dilution stress and storage. In vivo pharmacokinetic and tissue distribution studies were performed in Swiss albino mice, the therapeutic availability (TA) of DSP2-3 was 3.59 times and 2.36 times in comparison to drug solution and SLE-5 respectively, where as DPP5-3 showed TA 2.8 and 1.84 times the drug solution and SLE-5, respectively. The brain to serum ratio of indinavir from DSP2-3 and DPP5-3 varied between 0.4 and 0.7 at all time points indicated the preferential accumulation of drug in brain. In conclusion, pegylated SLEs improved brain specific delivery of indinavir and will be useful in treating chronic HIV infection.
Collapse
Affiliation(s)
- Prabhakar Kandadi
- Nanotechnology Laboratory, Department of Pharmaceutics, University College of Pharmaceutical Sciences, Kakatiya University, Vidyaranya Puri, Warangal 506009, Andhra Pradesh, India
| | | | | | | |
Collapse
|
23
|
Ganta S, Sharma P, Paxton JW, Baguley BC, Garg S. Pharmacokinetics and pharmacodynamics of chlorambucil delivered in long-circulating nanoemulsion. J Drug Target 2010; 18:125-33. [PMID: 19728787 DOI: 10.3109/10611860903244199] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Chlorambucil was incorporated into a nanoemulsion modified with poly(ethylene glycol) to improve its pharmacokinetics and tissue distribution, and thus enhance its therapeutic efficacy. A long-circulating nanoemulsion (LNE) was prepared using soybean oil, egg lecithin, cholesterol and PEG(2000)DSPE. The LNE had an oil droplet size <200 nm with a surface charge of -32.2 to -35.6 mV. Approximately, 97% of the chlorambucil was encapsulated in the LNE. Intravenous (i.v.) administration of the chlorambucil LNE to C57 B/6 mice showed improved pharmacokinetic parameters with 1.4-fold higher area under the plasma concentration-time curve (AUC) and 1.3-fold longer half-life compared to a non-PEG-modified nanoemulsion, and 2.7-fold higher AUC and 7.6-fold longer half-life compared to chlorambucil solution. Tissue distribution studies after i.v. administration with LNE showed a considerable decrease in drug uptake in the reticulo-endothelial system containing organs compared to non-PEG-modified nanoemulsion. Additionally, the chlorambucil delivered in LNE significantly enhanced therapeutic efficacy in the subcutaneous colon-38 adenocarcinoma tumor mouse model with no apparent increase in toxicity. This study suggests that LNE could produce remarkably improved pharmacokinetic profile and therapeutic efficacy of chlorambucil compared to non-PEG-modified nanoemulsion and solution.
Collapse
Affiliation(s)
- Srinivas Ganta
- School of Pharmacy, The University of Auckland, Auckland, New Zealand
| | | | | | | | | |
Collapse
|
24
|
Huynh L, Leroux JC, Allen C. Enhancement of docetaxel solubility via conjugation of formulation-compatible moieties. Org Biomol Chem 2009; 7:3437-46. [PMID: 19675898 DOI: 10.1039/b906862g] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Computer-based theoretical calculations were employed to direct the design of docetaxel conjugates with enhanced solubility in the internal phase of a nano-emulsion formulation. The theoretically-identified optimal docetaxel conjugates were synthesized by direct attachment of lauroyl moieties through an ester linkage to docetaxel. In comparison to docetaxel, the conjugates exhibited significantly improved solubility in oil, as predicted by our theoretical calculations. This contributed to high drug entrapment efficiencies (up to 97%) and a high drug loading capacity (5.7% w/w) for the docetaxel conjugates. The mono-substitution of an acyl group at C-2' of docetaxel resulted in a conjugate with 37- to 46-fold lower cytotoxicity than that of the parent drug in two human cancer cell lines. Importantly, the activity exerted by the mono-substituted docetaxel on the cancer cells was due in part to the cytotoxicity of the parent drug that was released via hydrolysis of the ester bond between the lauroyl moiety and the drug under biologically relevant conditions. In contrast, di- and tri-substitution of acyl groups at C-2', C-7 and/or C-10 of docetaxel resulted in non-hydrolysable conjugates that were found to be inactive. Overall, our results show that computer-based theoretical calculation is a promising strategy for guiding the enhancement of material-drug compatibility in formulation development. Also, these studies confirm that chemical modification of docetaxel for enhancement of material-drug compatibility should be limited to mono-substitution at C-2' and result in a prodrug that is hydrolysable at a moderate rate under biologically relevant conditions.
Collapse
Affiliation(s)
- Loan Huynh
- Leslie Dan Faculty of Pharmacy, University of Toronto, 144 College Street, Toronto, Ontario, M5S 3M2, Canada
| | | | | |
Collapse
|
25
|
Husseini GA, Pitt WG. Ultrasonic-activated micellar drug delivery for cancer treatment. J Pharm Sci 2009; 98:795-811. [PMID: 18506804 DOI: 10.1002/jps.21444] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The use of nanoparticles and ultrasound in medicine continues to evolve. Great strides have been made in the areas of producing micelles, nanoemulsions, and solid nanoparticles that can be used in drug delivery. An effective nanocarrier allows for the delivery of a high concentration of potent medications to targeted tissue while minimizing the side effect of the agent to the rest of the body. Polymeric micelles have been shown to encapsulate therapeutic agents and maintain their structural integrity at lower concentrations. Ultrasound is currently being used in drug delivery as well as diagnostics, and has many advantages that elevate its importance in drug delivery. The technique is noninvasive, thus no surgery is needed; the ultrasonic waves can be easily controlled by advanced electronic technology so that they can be focused on the desired target volume. Additionally, the physics of ultrasound are widely used and well understood; thus ultrasonic application can be tailored towards a particular drug delivery system. In this article, we review the recent progress made in research that utilizes both polymeric micelles and ultrasonic power in drug delivery.
Collapse
Affiliation(s)
- Ghaleb A Husseini
- Chemical Engineering Department, American University of Sharjah, Sharjah, United Arab Emirates.
| | | |
Collapse
|
26
|
Simulation of doxorubicin delivery via glucosamine(ethylene glycol) carrier. Int J Mol Sci 2009; 9:2290-2305. [PMID: 19330076 PMCID: PMC2635626 DOI: 10.3390/ijms9112290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2008] [Revised: 10/02/2008] [Accepted: 11/13/2008] [Indexed: 12/04/2022] Open
Abstract
This article focuses on the molecular modeling of the release of doxorubicin from capsules composed of glucosamine(ethylene glycol) oligomers. Doxorubicin forms micelle structures with glucosamine(ethylene glycol), and the drug release mechanism can be studied through the modeling of oligomeric bond breaking under acidic, neutral, or basic conditions. Under these conditions, the activation energies were calculated to be 145.51, 135.78, and 287.60 kcal/mol, respectively, at the B3LYP/6-31G//PM3 level. Based on these values, doxorubicin can be released into acidic and neutral solutions but not into basic solution. Ethylene glycol chain length in glucosamine(ethylene glycol) also effects drug release. As the length of ethylene glycol increases, the amount of drug released increases under acidic conditions, but decreases under neutral and basic conditions. When the drug is released from glucosamine(ethylene glycol) oligomers, the drug molecule and glucosamine(ethylene glycol) molecules form a micelle structure. Studies found that, as the length of the ethylene glycol chains increases, the micelle structure is more easily formed. The ethylene glycol group can deliver doxorubicin to cancer cells in micelle form.
Collapse
|
27
|
Han M, He CX, Fang QL, Yang XC, Diao YY, Xu DH, He QJ, Hu YZ, Liang WQ, Yang B, Gao JQ. A Novel Camptothecin Derivative Incorporated in Nano-Carrier Induced Distinguished Improvement in Solubility, Stability and Anti-tumor Activity Both In Vitro and In Vivo. Pharm Res 2008; 26:926-35. [DOI: 10.1007/s11095-008-9795-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2008] [Accepted: 11/12/2008] [Indexed: 10/21/2022]
|
28
|
Wan F, You J, Sun Y, Zhang XG, Cui FD, Du YZ, Yuan H, Hu FQ. Studies on PEG-modified SLNs loading vinorelbine bitartrate (I): Preparation and evaluation in vitro. Int J Pharm 2008; 359:104-10. [DOI: 10.1016/j.ijpharm.2008.03.030] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2007] [Revised: 03/08/2008] [Accepted: 03/20/2008] [Indexed: 11/25/2022]
|
29
|
|