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Uthaman S, Pillarisetti S, Huh KM, Cho CS, Park IK. Drug-dye-apoptosis inducing micelles for enhancing host immunity against advanced metastatic breast cancer by the combination of low dose chemotherapy and photothermal therapy. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.03.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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2
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Kumari M, Sharma N, Manchanda R, Gupta N, Syed A, Bahkali AH, Nimesh S. PGMD/curcumin nanoparticles for the treatment of breast cancer. Sci Rep 2021; 11:3824. [PMID: 33589661 PMCID: PMC7884397 DOI: 10.1038/s41598-021-81701-x] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 11/24/2020] [Indexed: 01/31/2023] Open
Abstract
The present study aims at developing PGMD (poly-glycerol-malic acid-dodecanedioic acid)/curcumin nanoparticles based formulation for anticancer activity against breast cancer cells. The nanoparticles were prepared using both the variants of PGMD polymer (PGMD 7:3 and PGMD 6:4) with curcumin (i.e. CUR NP 7:3 and CUR NP 6:4). The size of CUR NP 7:3 and CUR NP 6:4 were found to be ~ 110 and 218 nm with a polydispersity index of 0.174 and 0.36, respectively. Further, the zeta potential of the particles was - 18.9 and - 17.5 mV for CUR NP 7:3 and CUR NP 6:4, respectively. The entrapment efficiency of both the nanoparticles was in the range of 75-81%. In vitro anticancer activity and the scratch assay were conducted on breast cancer cell lines, MCF-7 and MDA-MB-231. The IC50 of the nanoformulations was observed to be 40.2 and 33.6 μM at 48 h for CUR NP 7:3 and CUR NP 6:4, respectively, in MCF-7 cell line; for MDA-MB-231 it was 43.4 and 30.5 μM. Acridine orange/EtBr and DAPI staining assays showed apoptotic features and nuclear anomalies in the treated cells. This was further confirmed by western blot analysis that showed overexpression of caspase 9 indicating curcumin role in apoptosis.
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Affiliation(s)
- Mankamna Kumari
- Department of Biotechnology, School of Life Sciences, Central University of Rajasthan, Bandarsindri, N.H. 8, Teh., Kishangarh, Dist., Ajmer, Rajasthan, 305817, India
| | - Nikita Sharma
- Department of Biotechnology, School of Life Sciences, Central University of Rajasthan, Bandarsindri, N.H. 8, Teh., Kishangarh, Dist., Ajmer, Rajasthan, 305817, India
| | - Romila Manchanda
- School of Basic and Applied Sciences, K.R. Mangalam University, Sohna Road, Gurugram, 122103, India
| | - Nidhi Gupta
- Department of Biotechnology, IIS (Deemed To Be University), Gurukul Marg, SFS, Mansarovar, Jaipur, Rajasthan, 302020, India
| | - Asad Syed
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. 2455, Riyadh, 11451, Saudi Arabia
| | - Ali H Bahkali
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. 2455, Riyadh, 11451, Saudi Arabia
| | - Surendra Nimesh
- Department of Biotechnology, School of Life Sciences, Central University of Rajasthan, Bandarsindri, N.H. 8, Teh., Kishangarh, Dist., Ajmer, Rajasthan, 305817, India.
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3
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Targeting anticancer drugs with pluronic aggregates: Recent updates. Int J Pharm 2020; 586:119544. [DOI: 10.1016/j.ijpharm.2020.119544] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Revised: 06/04/2020] [Accepted: 06/10/2020] [Indexed: 12/20/2022]
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4
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Allotey-Babington GL, Nettey H, D’Sa S, Braz Gomes K, D'Souza MJ. Cancer chemotherapy: Effect of poloxamer modified nanoparticles on cellular function. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2018.06.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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5
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Chowdhury P, Nagesh PK, Khan S, Hafeez BB, Chauhan SC, Jaggi M, Yallapu MM. Development of polyvinylpyrrolidone/paclitaxel self-assemblies for breast cancer. Acta Pharm Sin B 2018; 8:602-614. [PMID: 30109184 PMCID: PMC6090082 DOI: 10.1016/j.apsb.2017.10.004] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 10/13/2017] [Accepted: 10/20/2017] [Indexed: 12/13/2022] Open
Abstract
The goal of this investigation was to develop and demonstrate a polymer/paclitaxel self-assembly (PTX-SA) formulation. Polymer/PTX-SAs were screened based on smaller size of formulation using dynamic light scattering analysis. Additionally, fluorescence microscopy and flow cytometry studies exhibited that polyvinylpyrrolidone (PVP)-based PTX-SAs (PVP/PTX-SAs) had superior cellular internalization capability in MCF7 and MDA-MB-231 breast cancer cells. The optimized PVP/PTX-SAs exhibited less toxicity to human red blood cells indicating a suitable formulation for reducing systemic toxicity. The formation of PVP and PTX self-assemblies was confirmed using fluorescence quenching and transmission electron microscopy which indicated that the PVP/PTX-SAs were spherical in shape with an average size range of 53.81 nm as detected by transmission electron microscopy (TEM). FTIR spectral analysis demonstrates incorporation of polymer and paclitaxel functional groups in PVP/PTX-SAs. Both proliferation (MTS) and clonogenic (colony formation) assays were used to validate superior anticancer activity of PVP/PTX-SAs in breast cancer cells over paclitaxel. Such superior anticancer activity was also demonstrated by downregulation of the expression of pro-survival protein (Bcl-xL), upregulation of apoptosis-associated proteins (Bid, Bax, cleaved caspase 7, and cleaved PARP) and β-tubulin stabilization. These results support the hypothesis that PVP/PTX-SAs improved paclitaxel delivery to cancer cells.
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Affiliation(s)
| | | | | | | | | | | | - Murali M. Yallapu
- Department of Pharmaceutical Sciences and Center for Cancer Research, University of Tennessee Health Science Center, Memphis, TN 38163, USA
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Loureiro A, Noro J, Abreu AS, Nogueira E, Soares da Costa D, Silva C, Cavaco-Paulo A. Absence of Albumin Improves in Vitro Cellular Uptake and Disruption of Poloxamer 407-Based Nanoparticles inside Cancer Cells. Mol Pharm 2018; 15:527-535. [PMID: 29291347 DOI: 10.1021/acs.molpharmaceut.7b00893] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Novel nanoparticles based on Poloxamer 407 and vegetable oil were produced by high pressure homogenization. Functionalization of those nanoparticles was made by incorporation of folic acid (FA)-Poloxamer 407 conjugate. These nanoparticles showed suitable characteristics for intravenous therapeutic applications similarly to PEGylated albumin-based nanoparticles, previously described by our research group. Here, we found that the absence of albumin at the interface of Poloxamer 407-based nanoparticles improves the overall process of in vitro cellular uptake and nanoparticle disruption inside cancer cells (folate receptor, FR, positive cells). The results presented here suggest that interfacial composition of those nanoparticles is of paramount importance for drug trafficking inside cancer cells.
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Affiliation(s)
- Ana Loureiro
- Centre of Biological Engineering, University of Minho, Campus de Gualtar , 471 0-057, Braga, Portugal
| | - Jennifer Noro
- Centre of Biological Engineering, University of Minho, Campus de Gualtar , 471 0-057, Braga, Portugal
| | - Ana S Abreu
- Institute of Polymers and Composites (IPC) and Institute of Nanostructures, Nanomodelling and Nanofabrication (I3N), University of Minho, Campus de Azurém , 4800-058 Guimarães, Portugal
| | - Eugénia Nogueira
- Centre of Biological Engineering, University of Minho, Campus de Gualtar , 471 0-057, Braga, Portugal
| | - Diana Soares da Costa
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine , Ave Park, 4805-016 Taipas, Guimarães, Portugal.,ICVS/3B's-PT Government Associate Laboratory , Braga/Guimarães, Portugal
| | - Carla Silva
- Centre of Biological Engineering, University of Minho, Campus de Gualtar , 471 0-057, Braga, Portugal
| | - Artur Cavaco-Paulo
- Centre of Biological Engineering, University of Minho, Campus de Gualtar , 471 0-057, Braga, Portugal
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7
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Rakshit S, Sarkar A, Bhattacharya SC. A differential approach towards understanding the enhanced emission induced superior bio-imaging and cytotoxicity within block copolymeric nanomicelles. Colloids Surf B Biointerfaces 2017; 155:390-398. [DOI: 10.1016/j.colsurfb.2017.04.037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Revised: 04/16/2017] [Accepted: 04/17/2017] [Indexed: 10/19/2022]
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8
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Liu Y, Fu S, Lin L, Cao Y, Xie X, Yu H, Chen M, Li H. Redox-sensitive Pluronic F127-tocopherol micelles: synthesis, characterization, and cytotoxicity evaluation. Int J Nanomedicine 2017; 12:2635-2644. [PMID: 28435248 PMCID: PMC5388239 DOI: 10.2147/ijn.s122746] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Pluronic F127 (F127), an amphiphilic triblock copolymer, has been shown to have significant potential for drug delivery, as it is able to incorporate hydrophobic drugs and self-assemble into nanosize micelles. However, it suffers from dissociation upon dilution owing to the relatively high critical micelle concentration and lack of stimuli-responsive behavior. Here, we synthesized the α-tocopherol (TOC) modified F127 polymer (F127-SS-TOC) via a redox-sensitive disulfide bond between F127 and TOC, which formed stable micelles at relatively low critical micelle concentration and was sensitive to the intracellular redox environment. The particle size and zeta potential of the F127-SS-TOC micelles were 51.87±6.39 nm and -8.43±2.27 mV, respectively, and little changes in both particle size and zeta potential were observed within 7 days at room temperature. With 10 mM dithiothreitol stimulation, the F127-SS-TOC micelles rapidly dissociated followed by a significant change in size, which demonstrated a high reduction sensitivity of the micelles. In addition, the micelles showed a high hemocompatibility even at a high micelle concentration (1,000 μg/mL). Low cytotoxicity of the F127-SS-TOC micelles at concentrations ranging from 12.5 μg/mL to 200 μg/mL was also found on both Bel 7402 and L02 cells. Overall, our results demonstrated F127-SS-TOC micelles as a stable and safe aqueous formulation with a considerable potential for drug delivery.
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Affiliation(s)
- Yuling Liu
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing.,State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, People's Republic of China
| | - Sai Fu
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing
| | - Longfei Lin
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing
| | - Yuhong Cao
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
| | - Xi Xie
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
| | - Hua Yu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, People's Republic of China
| | - Meiwan Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, People's Republic of China
| | - Hui Li
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing
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9
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Pofali PA, Singh B, Dandekar P, Jain RD, Maharjan S, Choi YJ, Arote RB, Cho CS. Drug-conjugated polymers as gene carriers for synergistic therapeutic effect. J Biomed Mater Res B Appl Biomater 2015; 104:698-711. [PMID: 26471335 DOI: 10.1002/jbm.b.33545] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 09/15/2015] [Accepted: 09/27/2015] [Indexed: 01/12/2023]
Abstract
The ability to safely and effectively transfer gene into cells is the fundamental goal of gene delivery. In spite of the best efforts of researchers around the world, gene therapy has limited success. This may be because of several limitations of delivering gene which is one of the greatest technical challenges in the modern medicine. To address these issues, many efforts have been made to bind drugs and genes together by polymers for co-delivery to achieve synergistic effect. Usually, binding interaction of drugs with polymers is either physical or chemical. In case of drug-polymer physical interaction, the efficiency of drugs generally decreases because of separation of drugs from polymers in vivo whenever it comes in contact with charged biofluid/s or cells. While chemical interaction of drug-polymer overcomes the aforementioned obstacle, several problems such as steric hindrance, solubility, and biodegradability hinder it to develop as gene carrier. Considering these benefits and pitfalls, the objective of this review is to discuss the possible extent of drug-conjugated polymers as safe and efficient gene delivery carriers for achieving synergistic effect to combat various genetic disorders.
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Affiliation(s)
- P A Pofali
- Department of Chemical Engineering, Institute of Chemical Technology, Mumbai, 400-019, India.,Department of Molecular Genetics and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, 110-749, Republic of Korea
| | - B Singh
- Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, 151-921, Republic of Korea
| | - P Dandekar
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Mumbai, 400-019, India
| | - R D Jain
- Department of Chemical Engineering, Institute of Chemical Technology, Mumbai, 400-019, India
| | - S Maharjan
- Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, 151-921, Republic of Korea
| | - Y J Choi
- Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, 151-921, Republic of Korea
| | - R B Arote
- Department of Molecular Genetics and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, 110-749, Republic of Korea
| | - C S Cho
- Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, 151-921, Republic of Korea
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10
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Zeng N, Mignet N, Dumortier G, Olivier E, Seguin J, Maury M, Scherman D, Rat P, Boudy V. Poloxamer bioadhesive hydrogel for buccal drug delivery: Cytotoxicity and trans-epithelial permeability evaluations using TR146 human buccal epithelial cell line. Int J Pharm 2015; 495:1028-37. [PMID: 26403384 DOI: 10.1016/j.ijpharm.2015.09.045] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 09/18/2015] [Accepted: 09/19/2015] [Indexed: 12/11/2022]
Abstract
A salbutamol sulfate (SS)-Poloxamer bioadhesive hydrogel specially developed for buccal administration was investigated by studying interactions with TR146 human buccal epithelium cells (i.e. cellular toxicity (i) and trans-epithelial SS diffusion (ii)). The assessment of cell viability (MTT, Alamar Blue), membrane integrity (Neutral Red), and apoptosis assay (Hoechst 33342), were performed and associated to Digital Holographic Microscopy analysis. After the treatment of 2h, SS solution induced drastic cellular alterations that were prevented by hydrogels in relation with the concentrations of poloxamer and xanthan gum. The formulation containing P407 19%/P188 1%/Satiaxane 0.1% showed the best tolerance after single and multiple administrations and significantly reduced the trans-epithelial permeability from 5.00±0.29 (×10(3)) (SS solution) to 1.83±0.22 cm/h. Digital Holographic Microscopy images in good agreement with the viability data confirmed the great interest of this direct technique. In conclusion, the proposed hydrogels represent a safe and efficient buccal drug delivery platform.
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Affiliation(s)
- Ni Zeng
- CNRS UMR 8258-Inserm U1022, Paris Descartes University, Chimie-Paris Tech, 4, avenue de l'observatoire, F-75006 Paris, France; Unither Pharmaceuticals-Unither Développement Bordeaux, ZA Tech Espace, Av. Toussaint Catros, F-33185 Le Haillan, France
| | - Nathalie Mignet
- CNRS UMR 8258-Inserm U1022, Paris Descartes University, Chimie-Paris Tech, 4, avenue de l'observatoire, F-75006 Paris, France
| | - Gilles Dumortier
- CNRS UMR 8258-Inserm U1022, Paris Descartes University, Chimie-Paris Tech, 4, avenue de l'observatoire, F-75006 Paris, France
| | - Elodie Olivier
- UMR 8638CNRS COMETE, Paris Descartes University, 4, avenue de l'observatoire, F-75006 Paris, France
| | - Johanne Seguin
- CNRS UMR 8258-Inserm U1022, Paris Descartes University, Chimie-Paris Tech, 4, avenue de l'observatoire, F-75006 Paris, France
| | - Marc Maury
- Unither Pharmaceuticals-Unither Développement Bordeaux, ZA Tech Espace, Av. Toussaint Catros, F-33185 Le Haillan, France
| | - Daniel Scherman
- CNRS UMR 8258-Inserm U1022, Paris Descartes University, Chimie-Paris Tech, 4, avenue de l'observatoire, F-75006 Paris, France
| | - Patrice Rat
- UMR 8638CNRS COMETE, Paris Descartes University, 4, avenue de l'observatoire, F-75006 Paris, France
| | - Vincent Boudy
- CNRS UMR 8258-Inserm U1022, Paris Descartes University, Chimie-Paris Tech, 4, avenue de l'observatoire, F-75006 Paris, France; Mise au point galénique, Agence Générale des Equipements et des Produits de Santé (AGEPS), AP-HP, 7, rue du fer à moulin, F-75005 Paris, France.
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11
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Avci P, Erdem SS, Hamblin MR. Photodynamic therapy: one step ahead with self-assembled nanoparticles. J Biomed Nanotechnol 2015; 10:1937-52. [PMID: 25580097 DOI: 10.1166/jbn.2014.1953] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Photodynamic therapy (PDT) is a promising treatment modality for cancer with possible advantages over current treatment alternatives. It involves combination of light and a photosensitizer (PS), which is activated by absorption of specific wavelength light and creates local tissue damage through generation of reactive oxygen species (ROS) that induce a cascade of cellular and molecular events. However, as of today, PDT is still in need of improvement and nanotechnology may play a role. PDT frequently employs PS with molecular structures that are highly hydrophobic, water insoluble and prone to aggregation. Aggregation of PS leads to reduced ROS generation and thus lowers the PDT activity. Some PS such as 5-aminolevulinic acid (ALA) cannot penetrate through the stratum corneum of the skin and systemic administration is not an option due to frequently encountered side effects. Therefore PS are often encapsulated or conjugated in/on nano-drug delivery vehicles to allow them to be better taken up by cells and to more selectively deliver them to tumors or other target tissues. Several nano-drug delivery vehicles including liposomes, fullerosomes and nanocells have been tested and reviewed. Here we cover non-liposomal self-assembled nanoparticles consisting of polymeric micelles including block co-polymers, polymeric micelles, dendrimers and porphysomes.
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Folated synperonic-cholesteryl hemisuccinate polymeric micelles for the targeted delivery of docetaxel in melanoma. BIOMED RESEARCH INTERNATIONAL 2015; 2015:746093. [PMID: 25839040 PMCID: PMC4370104 DOI: 10.1155/2015/746093] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Revised: 01/26/2015] [Accepted: 01/26/2015] [Indexed: 02/06/2023]
Abstract
The objective of this study was the synthesis of folic acid- (FA-) targeted polymeric micelles of Synperonic PE/F 127-cholesteryl hemisuccinate (PF127-Chol) for specific delivery of docetaxel (DTX). Targeted or nontargeted micelles loaded with DTX were prepared via dialysis method. The effects of processing variables on the physicochemical properties of targeted micelles were evaluated using a full factorial design. After the optimization of the polymer/drug ratio, the organic solvent type used for the preparation of the micelles, and the temperature of dialyzing medium, the in vitro cytotoxicity and cellular uptake of the optimized micelles were studied on B16F10 melanoma cells by flow cytometry and fluorescent microscopy. The anticancer efficacy of DTX-loaded FA-PF127-Chol was evaluated in mice bearing melanoma tumor. Optimized targeted micelles had the particle size of 171.3 nm, zeta potential of −7.8 mV, PDI of 0.325, and a high encapsulation efficiency that released the drug within 144 h. The MTT assay indicated that targeted micelles carrying DTX were significantly more cytotoxic, had higher cellular uptake, and reduced the tumor volume significantly more than the nontargeted micelles and the free drug. FA-PF127-Chol could be, therefore, a promising biomaterial for tumors overexpressing folate receptors.
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13
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Chen T, Xu W, Huang Z, Peng H, Ke Z, Lu X, Yan Y, Liu R. Poly(phenyleneethynylene) nanoparticles: preparation, living cell imaging and potential application as drug carriers. J Mater Chem B 2015; 3:3564-3572. [PMID: 32262241 DOI: 10.1039/c5tb00064e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel PPE nanoparticles self-assembled from amphiphilic poly(phenyleneethynylenes) would be a promising drug delivery system for therapeutic delivery and/or bioimaging.
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Affiliation(s)
- Tong Chen
- Department of Urology
- Nan Fang Hospital
- Southern Medical University
- Guangzhou 510515
- China
| | - Wanfu Xu
- Department of Cell Biology
- School of Basic Medical Sciences
- Southern Medical University
- Guangzhou 510515
- China
| | - Zehai Huang
- Department of Urology
- Nan Fang Hospital
- Southern Medical University
- Guangzhou 510515
- China
| | - Hongmei Peng
- Department of Urology
- Nan Fang Hospital
- Southern Medical University
- Guangzhou 510515
- China
| | - Zhiyong Ke
- Department of Cell Biology
- School of Basic Medical Sciences
- Southern Medical University
- Guangzhou 510515
- China
| | - Xinwei Lu
- School of Pharmaceutical Sciences
- Southern Medical University
- Guangzhou 510515
- China
| | - Yichen Yan
- School of Pharmaceutical Sciences
- Southern Medical University
- Guangzhou 510515
- China
| | - Ruiyuan Liu
- School of Pharmaceutical Sciences
- Southern Medical University
- Guangzhou 510515
- China
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14
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Park S, Jeong K, Lee E, Lee JH, Yhee JY, Singh A, Koh J, Lee S, Kim K, Chan Kwon I, Park CR, Kim J, Kim S. Amphiphilized poly(ethyleneimine) nanoparticles: a versatile multi-cargo carrier with enhanced tumor-homing efficiency and biocompatibility. J Mater Chem B 2014; 3:198-206. [PMID: 32261940 DOI: 10.1039/c4tb01255k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Current theranostic approaches in cancer therapy demand delivery systems that can carry multiple drugs or imaging agents in a single nanoplatform with uniform biodistribution and improved target specificity. In this study, we have developed amphiphilized poly(ethyleneimine) nanoparticles (aPEI NPs) as a versatile multi-cargo delivery platform. The aPEI NPs were engineered to have the loading capacity for both hydrophobic molecules and negatively charged hydrophilic colloidal cargos through amphiphilic modification, i.e., octadecylation and subsequent PEGylation of poly(ethyleneimine). In the aqueous phase, the resulting aPEIs underwent amphiphilic self-assembly into spherical nanoparticles whose structure is constituted of the hydrophobic core with the positively charged surface and the hydrophilic neutral corona. The high degree of PEGylation resulted in the tiny colloidal size (<15 nm in diameter) and rendered the outmost surface coated with an antifouling corona which minimizes general shortcomings of poly(ethyleneimine)-based nanocarriers (e.g., cytotoxicity and liver filtration) while keeping its advantage (loading capability for negatively charged drugs). The unique nanostructure of aPEI NPs allowed for facile loading of hydrophobic model drugs (rubrene and IR780) in the core as well as negatively charged colloids (Pdots, proteins and DNA) on the inner surface via the hydrophobic and electrostatic interactions, respectively. Fluorescence imaging experiments demonstrated that the highly PEGylated aPEI-25 NPs showed prolonged blood circulation with minimal liver filtration and efficient delivery of the loaded cargos to the tumor. These combined merits, along with negligible toxicity profiles both in vitro and in vivo, validate the potential of aPEI-25 NPs as versatile nanocarriers for multi-cargo delivery.
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Affiliation(s)
- Solji Park
- Center for Theragnosis, Korea Institute of Science and Technology, 39-1 Hawolgok-dong, Seongbuk-gu, Seoul 136-791, Korea.
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15
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Varshosaz J, Taymouri S, Hassanzadeh F, Javanmard SH, Rostami M. Self-assembly micelles with lipid core of cholesterol for docetaxel delivery to B16F10 melanoma and HepG2 cells. J Liposome Res 2014; 25:157-65. [PMID: 25275925 DOI: 10.3109/08982104.2014.961022] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The objective of the present study was to prepare a micellar polymeric carrier for the delivery of Docetaxel (DTX) as a kind of polysorbate free preparation. Pluronic F127 (PF127) was conjugated to cholesterol (Chol) via succinyl linkage and characterized by FTIR and HNMR. DTX-loaded polymeric micelles were prepared via film hydration method. Physicochemical properties of micelles including particle size, zeta potential, drug loading and release efficiency were studied. The critical micelle concentration (CMC) was determined using pyrene as a hydrophobic fluorescent probe. In vitro cytotoxicity of micelles was evaluated in B16F10 melanoma cells and HepG2 cell line. The FTIR and HNMR spectroscopy methods confirmed the conjugation of PF127 to cholesterol via succinyl linkage. The micelles were spherical under scanning electron microscope (SEM) with the mean particle size of 248.2 ± 8-278.8 ± 12.3 nm and zeta potential ranging from -17.2 ± 8.7 to -28.4 ± 12.7 mV. Drug loading efficiency was higher than 98%. The in vitro release study showed the sustained release behavior of DTX within 144 h. The CMC of the micelles was about 41.67 ± 0.17 µg/ml, which was significantly lower than the CMC of pure PF127 micelles. Compared with the free drug, DTX-loaded micelles showed higher cytotoxicity against B16F10 melanoma and HepG2 cell lines.
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Affiliation(s)
- Jaleh Varshosaz
- Department of Pharmaceutics, Isfahan University of Medical Sciences , Isfahan , Islamic Republic of Iran
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16
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Qu MH, Zeng RF, Fang S, Dai QS, Li HP, Long JT. Liposome-based co-delivery of siRNA and docetaxel for the synergistic treatment of lung cancer. Int J Pharm 2014; 474:112-22. [DOI: 10.1016/j.ijpharm.2014.08.019] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Revised: 08/02/2014] [Accepted: 08/14/2014] [Indexed: 11/29/2022]
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SONG RONGFENG, LI XIAOJUN, CHENG XIAOLIANG, FU AIRONG, WANG YANHUA, FENG YANJUN, XIONG YAN. Paclitaxel-loaded trimethyl chitosan-based polymeric nanoparticle for the effective treatment of gastroenteric tumors. Oncol Rep 2014; 32:1481-8. [DOI: 10.3892/or.2014.3344] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2014] [Accepted: 06/25/2014] [Indexed: 11/05/2022] Open
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ZHANG LILI, YU SU, DUAN ZHIJUN, WANG QIUMING, TIAN GE, TIAN YAN, ZHAO WEI, WANG HUI, ZHANG CUILING, GUO SHIBIN, LIU QIGUI, HE GAOHONG, BIAN TENGFEI, CHANG JIUYANG, JIN XUE, CUI DONGSHENG. Treatment of liver cancer in mice by the intratumoral injection of an octreotide-based temperature-sensitive gel. Int J Mol Med 2013; 33:117-27. [DOI: 10.3892/ijmm.2013.1542] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Accepted: 08/21/2013] [Indexed: 11/06/2022] Open
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Effects of vitamin E on the concentration of conjugated linoleic acids and accumulation of intermediates of ruminal biohydrogenation in vitro. Small Rumin Res 2013. [DOI: 10.1016/j.smallrumres.2012.09.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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20
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Bae WK, Park MS, Lee JH, Hwang JE, Shim HJ, Cho SH, Kim DE, Ko HM, Cho CS, Park IK, Chung IJ. Docetaxel-loaded thermoresponsive conjugated linoleic acid-incorporated poloxamer hydrogel for the suppression of peritoneal metastasis of gastric cancer. Biomaterials 2012; 34:1433-41. [PMID: 23174142 DOI: 10.1016/j.biomaterials.2012.10.077] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Accepted: 10/31/2012] [Indexed: 12/22/2022]
Abstract
We evaluated the potential of a thermoresponsive hydrogel consisting of conjugated linoleic acid-coupled Pluronic F-127 (Plu-CLA) as a controlled release, intraperitoneal delivery system for docetaxel with the aim of treating peritoneal dissemination of gastric cancer. Previously, we established a peritoneal metastasis model that involves the injection of BALB/c mice with TMK1 human gastric cancer cells. One week after the TMK1 cells were injected, the mice were injected intraperitoneally with docetaxel alone or docetaxel-loaded Plu-CLA. Tumor progression and response to therapy were monitored by micro-positron emission tomography. The total number of peritoneal tumors and the ascites volume were also measured. Compared with docetaxel alone, the combination of docetaxel and Plu-CLA (docetaxel-Plu-CLA) significantly and synergistically reduced tumor cell survival. Docetaxel-Plu-CLA showed excellent anti-tumor activity, inducing apoptosis more potently than docetaxel alone. Docetaxel-Plu-CLA also significantly reduced the number of peritoneal metastatic nodules and increased survival in the peritoneal gastric cancer xenograft model. Our results show that intraperitoneal administration of docetaxel-Plu-CLA synergistically inhibits peritoneal metastasis and prolongs survival in a peritoneal gastric cancer model. Therefore, Plu-CLA is a potential intraperitoneal-route carrier for hydrophobic docetaxel for the effective treatment of peritoneal metastatic gastric cancer.
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Affiliation(s)
- Woo Kyun Bae
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, Hwasun-gun, Jeollanamdo, South Korea
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21
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Ali YM, Kadir AA, Ahmad Z, Yaakub H, Zakaria ZA, Abdullah MNH. Free radical scavenging activity of conjugated linoleic acid as single or mixed isomers. PHARMACEUTICAL BIOLOGY 2012; 50:712-719. [PMID: 22181061 DOI: 10.3109/13880209.2011.621714] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
CONTEXT Conjugated linoleic acids (CLAs) are a mixture of positional and geometric isomers of linoleic acid (LA) and believed to have many positive biological activities. OBJECTIVE The present study was undertaken to assess the antioxidant activity of cis-9, trans-11 and trans-10, cis-12 as single or mixed CLA isomers at two ratios, 1:6 and 1:13 (trans-10, cis-12/cis-9, trans-11). MATERIALS AND METHODS A microplate reader was used to determine the free radical scavenging properties of CLAs against DPPH radical in ethanol. RESULTS The kinetic reactions of CLA-DPPH(•) showed that all tested CLAs have exerted radical scavenging activities in a dose-dependent manner and observed to immediately react and quench DPPH radicals at all tested levels and no lag phase was noticed in CLA-DPPH(•) reactions. The median inhibitory concentration (IC₅₀) value for cis-9, trans-11 CLA was observed to be more effective than other tested CLA. Total antioxidant capacity (TAC) of all tested CLAs were less effective radical scavengers as compared to vitamin E and butylated hydroxytoluene, although all tested CLAs were quenched a high amount (P < 0.05) of DPPH free radicals. DISCUSSION AND CONCLUSION All tested CLAs have the ability to directly react and quench DPPH free radicals in ethanol. Furthermore, trans-10, cis-12 CLA has greater maximal efficacy than other tested CLAs as free radical scavenger, while cis-9, trans-11 CLA is the most potent isomer to directly react and quench free radicals at low concentrations in the system, suggesting that the free radical scavenging activity of CLA isomers may contribute to their diverse biological activities.
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Affiliation(s)
- Yassir Mohammed Ali
- Faculty of Veterinary Medicine, Universiti Putra Malaysia, Selangor, Malaysia
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22
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Menon JU, Kona S, Wadajkar AS, Desai F, Vadla A, Nguyen KT. Effects of surfactants on the properties of PLGA nanoparticles. J Biomed Mater Res A 2012; 100:1998-2005. [PMID: 22566409 DOI: 10.1002/jbm.a.34040] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Revised: 12/01/2011] [Accepted: 12/08/2011] [Indexed: 12/24/2022]
Abstract
The objective of this study was to investigate the physical characteristics of poly(D,L-lactic-co-glycolic acid) (PLGA) nanoparticles (NPs) coated with two surfactants, Pluronic or the commonly used polyvinyl alcohol (PVA); and determine their in vitro efficiency as drug carriers for cancer therapy. Free surfactant cytotoxicity results indicated that Pluronic F127 (PF127) was most cytocompatible among the Pluronics tested and hence chosen for coating PLGA NPs for further studies. Release studies using doxorubicin (DOX) as a drug model showed sustained release of DOX from both PVA- and PF127-coated PLGA NPs (PLGA-PVA and PLGA-PF127, respectively) over 28 days. Further, there was no significant difference in human dermal fibroblasts and human aortic smooth muscle cell survival when exposed to both types of NPs. Cellular uptake studies demonstrated that uptake of both nanoparticle types was dose-dependent for both prostate and breast cancer cells. However, these cancer cells internalized more PLGA-PF127 NPs than PLGA-PVA NPs. Moreover, studies showed that drug-loaded PLGA-PF127 NPs not only killed more cancer cells than drug-loaded PLGA-PVA NPs, but also overcame drug resistance in LNCaP, MDA-MB-231, and MDA-MB-468 cancer cells on re-exposure. These results indicate that PLGA-PF127 NPs can form a promising system that not only delivers anti-cancer drugs, but also overcomes drug resistance, which is prevalent in most cancer cells.
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Affiliation(s)
- Jyothi U Menon
- Department of Bioengineering, University of Texas at Arlington, Arlington, Texas, USA
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Park HG, Cho HT, Song MC, Kim SB, Kwon EG, Choi NJ, Kim YJ. Production of a conjugated fatty acid by Bifidobacterium breve LMC520 from α-linolenic acid: conjugated linolenic acid (CLnA). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:3204-3210. [PMID: 22372442 DOI: 10.1021/jf2041559] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
This study was performed to characterize natural CLnA isomer production by Bifidobacterium breve LMC520 of human origin in comparison to conjugated linoleic acid (CLA) production. B. breve LMC520 was found to be highly active in terms of CLnA production, of which the major portion was identified as cis-9,trans-11,cis-15 CLnA isomer by GC-MS and NMR analysis. B. breve LMC520 was incubated for 48 h using MRS medium (containing 0.05% L-cysteine · HCl) under different environmental conditions such as atmosphere, pH, and substrate concentration. The high conversion rate of α-linolenic acid (α-LNA) to CLnA (99%) was retained up to 2 mM α-LNA, and the production was proportionally increased nearly 7-fold with 8 mM by the 6 h of incubation under anaerobic conditions at a wide range of pH values (between 5 and 9). When α-LNA was compared with linoleic acid (LA) as a substrate for isomerization by B. breve LMC520, the conversion of α-LNA was higher than that of LA. These results demonstrated that specific CLnA isomer could be produced through active bacterial conversion at an optimized condition. Because many conjugated octadecatrienoic acids in nature are shown to play many positive roles, the noble isomer found in this study has potential as a functional source.
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Affiliation(s)
- Hui Gyu Park
- Department of Food and Biotechnology, Korea University, Chungnam 339-700, Korea
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Synergistic effects of Akt1 shRNA and paclitaxel-incorporated conjugated linoleic acid-coupled poloxamer thermosensitive hydrogel on breast cancer. Biomaterials 2011; 33:2272-81. [PMID: 22177840 DOI: 10.1016/j.biomaterials.2011.12.011] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Accepted: 12/04/2011] [Indexed: 12/23/2022]
Abstract
The phosphoinositide 3-kinase/Akt1 signaling pathway has emerged as a target for cancer therapy. In this study, we aimed to develop a strategy to enhance Akt-targeted cancer therapy. We hypothesized that combination of Akt1-targeted therapy with conventional chemotherapy using paclitaxel-incorporated conjugated linoleic acid-coupled poloxamer thermosensitive hydrogel may have synergistic effects in cancer therapeutic efficiency compared with chemotherapy alone. In this study, we found that the combination of shAkt1 with paclitaxel exerted synergistic anti-cancer effects, thus, inhibiting the growth of human breast cancer cells, and breast cancer xenografts in mice as well. The combination therapy demonstrated enhanced anti-cancer effects through inhibiting Akt1 signaling and inducing apoptosis. Our results suggest that the presented strategy of combination of shAkt1 with paclitaxel may have a potential for treatment of breast cancer.
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Gao Q, Liang Q, Yu F, Xu J, Zhao Q, Sun B. Synthesis and characterization of novel amphiphilic copolymer stearic acid-coupled F127 nanoparticles for nano-technology based drug delivery system. Colloids Surf B Biointerfaces 2011; 88:741-8. [PMID: 21906917 DOI: 10.1016/j.colsurfb.2011.08.010] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Revised: 06/30/2011] [Accepted: 08/10/2011] [Indexed: 11/30/2022]
Abstract
Pluronic, F127, amphiphilic block copolymers, are used for several applications, including drug delivery systems. The critical micelle concentration (CMC) of F127 is about 0.26-0.8 wt% so that the utility of F127 in nano-technology based drug delivery system is limited since the nano-sized micelles could dissociate upon dilution. Herein, stearic acid (SA) was simply coupled to F127 between the carboxyl group of SA and the hydroxyl group of F127, which formed a novel copolymer named as SA-coupled F127, with significantly lower CMC. Above the CMC 6.9 × 10(-5)wt%, SA-coupled F127 self-assembled stable nanoparticles with Zeta potential -36 mV. Doxorubicin (DOX)-loaded nanoparticles were made, with drug loading (DL) 5.7 wt% and Zeta potential -36 to -39 mV, and the nanoparticles exhibited distinct shape with the size distribution from 20 to 50 nm. DOX-loaded nanoparticles were relatively stable and exhibited DOX dependant cytotoxicity toward MCF-7 cells in vitro. These results suggest that SA-coupled F127 potentially could be applied as a nano-technology based drug delivery method.
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Affiliation(s)
- Qihe Gao
- Southeast University, School of Chemistry and Chemical Engineering, Nanjing 210000, China
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Multifunctional Pluronic P123/F127 mixed polymeric micelles loaded with paclitaxel for the treatment of multidrug resistant tumors. Biomaterials 2011; 32:2894-906. [PMID: 21256584 DOI: 10.1016/j.biomaterials.2010.12.039] [Citation(s) in RCA: 293] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2010] [Accepted: 12/26/2010] [Indexed: 10/18/2022]
Abstract
The aim of this study was to exploit the possibility of combination of active targeting function of folic acid by folate receptor-mediated endocytosis and overcoming multidrug resistance (MDR) by Pluronic block copolymers to promote drug delivery to MDR tumor following intravenous administration with paclitaxel (PTX) as model drug. Folic acid functionalized Pluronic P123/F127 mixed micelles encapsulating PTX (FPF-PTX) was firstly developed and tested in vitro and in vivo, while PTX-loaded Pluronic P123/F127 mixed micelles (PF-PTX) and Taxol were used as control. FPF-PTX was about 20 nm in diameter with spherical shape and high encapsulation efficiency. Cellular uptake of FPF-PTX was found to be higher than that of PF-PTX due to the folate receptor-mediated endocytosis effect. In vitro cytotoxicity, cell apoptosis and cell cycle arrest studies also revealed that FPF-PTX was more potent than those of PF-PTX and Taxol. In vivo pharmacokinetic study in rats showed that the polymeric micelles significantly enhanced the bioavailability of PTX (∼3 fold) than Taxol. Moreover, in BALB/c mice bearing KBv MDR tumor xenografts, stronger antitumor efficacy was shown in FPF-PTX group, with good correlation between in vitro and in vivo. In conclusion, folate-conjugated Pluronic micelles could be a potential vehicle for delivering hydrophobic chemotherapeutic drugs to MDR tumors.
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29
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Ke XY, Zhao BJ, Zhao X, Wang Y, Huang Y, Chen XM, Zhao BX, Zhao SS, Zhang X, Zhang Q. The therapeutic efficacy of conjugated linoleic acid - paclitaxel on glioma in the rat. Biomaterials 2010; 31:5855-64. [PMID: 20430438 DOI: 10.1016/j.biomaterials.2010.03.079] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2010] [Accepted: 03/29/2010] [Indexed: 12/27/2022]
Abstract
Considering the effects of conjugated linoleic acid (CLA) on anti-tumor and anti-angiogenic in brain tumor, synergistic anti-tumor activity with taxane as well as potential activity for transporting chemotherapeutic agents across the blood-brain barrier (BBB), the purpose of this study was to synthesize CLA-paclitaxel (CLA-PTX) conjugate which could reach to the brain tissue and target brain tumor. The CLA was covalently linked to PTX. The conjugate was stable in PBS and rat plasma in vitro and had no microtubule assembly activity in solution and slight effect of arresting cell cycle progression at the G(2)-M phase. The in vitro cytotoxicity of conjugate was lower than that of PTX (p < 0.05). The conjugate showed higher cellular uptake efficiency on C6 glioma cells. The entire pharmacokinetic index revealed the significant enhancement of the conjugate pharmacokinetics compared with that in PTX (p < 0.01). The conjugate, unlike PTX, could distribute in brain tissue and retained higher concentrations throughout 360 h. The anti-tumor efficacy in brain tumor-bearing rats after administering conjugate was significantly higher than that after giving Taxol (p < 0.01). In conclusion, this CLA-PTX conjugate showed great potential to become a new prodrug of PTX and the methodology can be applied to other anticancer drugs.
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Affiliation(s)
- Xi-Yu Ke
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
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30
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Sonoda A, Nitta N, Ohta S, Nitta-Seko A, Morikawa S, Tabata Y, Takahashi M, Murata K. Controlled Release and Antitumor Effect of Pluronic F127 Mixed with Cisplatin in a Rabbit Model. Cardiovasc Intervent Radiol 2009; 33:135-42. [DOI: 10.1007/s00270-009-9741-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2009] [Accepted: 10/12/2009] [Indexed: 01/27/2023]
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31
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Synergistic anti-tumor activity of paclitaxel-incorporated conjugated linoleic acid-coupled poloxamer thermosensitive hydrogel in vitro and in vivo. Biomaterials 2009; 30:4777-85. [DOI: 10.1016/j.biomaterials.2009.05.051] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2009] [Accepted: 05/17/2009] [Indexed: 12/17/2022]
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32
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Conjugated Linoleic Acid Decreases MCF-7 Human Breast Cancer Cell Growth and Insulin-Like Growth Factor-1 Receptor Levels. Lipids 2009; 44:449-58. [DOI: 10.1007/s11745-009-3288-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2008] [Accepted: 01/26/2009] [Indexed: 10/21/2022]
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Seo JH, Moon HS, Kim IY, Guo DD, Lee HG, Choi YJ, Cho CS. PEGylated conjugated linoleic acid stimulation of apoptosis via a p53-mediated signaling pathway in MCF-7 breast cancer cells. Eur J Pharm Biopharm 2008; 70:621-6. [DOI: 10.1016/j.ejpb.2008.05.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2007] [Accepted: 05/09/2008] [Indexed: 12/26/2022]
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Vicent MJ, Dieudonné L, Carbajo RJ, Pineda-Lucena A. Polymer conjugates as therapeutics: future trends, challenges and opportunities. Expert Opin Drug Deliv 2008; 5:593-614. [DOI: 10.1517/17425247.5.5.593] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Batrakova EV, Kabanov AV. Pluronic block copolymers: evolution of drug delivery concept from inert nanocarriers to biological response modifiers. J Control Release 2008; 130:98-106. [PMID: 18534704 DOI: 10.1016/j.jconrel.2008.04.013] [Citation(s) in RCA: 885] [Impact Index Per Article: 55.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2008] [Accepted: 04/16/2008] [Indexed: 01/10/2023]
Abstract
Polymer nanomaterials have sparked a considerable interest as vehicles used for diagnostic and therapeutic agents; research in nanomedicine has not only become a frontier movement but is also a revolutionizing drug delivery field. A common approach for building a drug delivery system is to incorporate the drug within the nanocarrier that results in increased solubility, metabolic stability, and improved circulation time. With this foundation, nanoparticles with stealth properties that can circumvent RES and other clearance and defense mechanisms are the most promising. However, recent developments indicate that select polymer nanomaterials can implement more than only inert carrier functions by being biological response modifiers. One representative of such materials is Pluronic block copolymers that cause various functional alterations in cells. The key attribute for the biological activity of Pluronics is their ability to incorporate into membranes followed by subsequent translocation into the cells and affecting various cellular functions, such as mitochondrial respiration, ATP synthesis, activity of drug efflux transporters, apoptotic signal transduction, and gene expression. As a result, Pluronics cause drastic sensitization of MDR tumors to various anticancer agents, enhance drug transport across the blood brain and intestinal barriers, and causes transcriptional activation of gene expression both in vitro and in vivo. Collectively, these studies suggest that Pluronics have a broad spectrum of biological response modifying activities which make it one of the most potent drug targeting systems available, resulting in a remarkable impact on the emergent field of nanomedicine.
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Affiliation(s)
- Elena V Batrakova
- Center for Drug Delivery and Nanomedicine, Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE 68198-5830, USA.
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