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Nanomicelles

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https://www.readbyqxmd.com/read/28420213/folate-decorated-nanomicelles-loaded-with-a-potent-curcumin-analogue-for-targeting-retinoblastoma
#1
Hashem Alsaab, Rami M Alzhrani, Prashant Kesharwani, Samaresh Sau, Sai Hs Boddu, Arun K Iyer
The aim of this study was to develop a novel folate receptor-targeted drug delivery system for retinoblastoma cells using a promising anticancer agent, curcumin-difluorinated (CDF), loaded in polymeric micelles. Folic acid was used as a targeting moiety to enhance the targeting and bioavailability of CDF. For this purpose, amphiphilic poly(styrene-co-maleic acid)-conjugated-folic acid (SMA-FA) was synthesized and utilized to improve the aqueous solubility of a highly hydrophobic, but very potent anticancer compound, CDF, and its targeted delivery to folate overexpressing cancers...
April 18, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/28408816/zonisamide-loaded-triblock-copolymer-nanomicelles-as-a-novel-drug-delivery-system-for-the-treatment-of-acute-spinal-cord-injury
#2
JingLun Li, JiaoJiao Deng, JinXian Yuan, Jie Fu, XiaoLing Li, AiPing Tong, YueLong Wang, YangMei Chen, Gang Guo
Spinal cord injury (SCI) commonly leads to lifelong disability due to the limited regenerative capacity of the adult central nervous system. Nanomicelles can be used as therapeutic systems to provide effective treatments for SCI. In this study, a novel triblock monomethyl poly(ethylene glycol)-poly(l-lactide)-poly(trimethylene carbonate) copolymer was successfully synthesized. Next, polymeric nanomicelles loaded with zonisamide (ZNS), a Food and Drug Administration-approved antiepileptic drug, were prepared and characterized...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28385400/nanomicelle-curcumin-induced-dna-fragmentation-in-testicular-tissue-correlation-between-mitochondria-dependent-apoptosis-and-failed-pcna-related-hemostasis
#3
Sana Moshari, Vahid Nejati, Gholamreza Najafi, Mazdak Razi
Current study was done to assess possible anti-proliferative effect of nanomicelle curcumin (NMCM) against germ cells in testicular tissue. For this purpose, 24 mature male Wistar rats were divided into control and test groups. The animals in test groups received 7.5mg/kg, 15mg/kg and 30mg/kg of NMC (NO=6 rats in each group). Following 48days, the expression of Bcl-2, Bax, caspase-3, P53 and proliferating cell nuclear antigen (PCNA) were evaluated by using reverse transcription-PCR and immunohistochemistry...
April 3, 2017: Acta Histochemica
https://www.readbyqxmd.com/read/28377319/development-of-extended-voyaging-anti-oxidant-linked-amphiphilic-polymeric-nanomicelles-for-anti-tuberculosis-drug-delivery
#4
Rajendran Amarnath Praphakar, Murugan A Munusamy, Mariappan Rajan
Amphiphilic chitosan-graft-poly(caprolactone)/(ferulic acid) (CS-g-PCL/FA) multi-co-polymers were fabricated by microwave-assisted ring opening polymerization followed by an 1-ethyl-3-(3-dimethyl-aminopropyl) carbodiimide (EDC)-mediated coupling reaction and characterized by Fourier transformed infrared (FTIR) spectroscopy. Graft copolymers self-assembled into nanomicelles, and were able to incorporate rifampicin (RF) into their hydrophobic inner cores. X-ray diffraction (XRD) patterns were applied to characterize the crystal structures of graft polymers and the effects of RF on micelle morphology...
April 2, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28323118/mixed-poly-vinyl-pyrrolidone-based-drug-loaded-nanomicelles-shows-enhanced-efficacy-against-pancreatic-cancer-cell-lines
#5
Anisha Veeren, Archana Bhaw-Luximon, Debabrata Mukhopadhyay, Dhanjay Jhurry
We report in this paper on the enhanced efficacy of a physical mixture of two single anti-cancer loaded nanomicelles against PANC-1 and BxPC-3. Poly(vinyl pyrrolidone-b-polycaprolactone) (PVP-b-PCL) and poly(vinyl pyrrolidone-b-poly(dioxanone-co-methyl dioxanone)) (PVP-b-P(DX-co-MeDX)) were synthesized and successfully loaded with various anti-cancer drugs - gemcitabine (GEM), doxorubicin.HCl (DOX.HCl), doxorubicin.NH2 (DOX), 5-fluorouracil (5-FU) and paclitaxel (PTX). Spherical micelles of size 160-477 nm were obtained as characterized by DLS while sizes determined by TEM were in the range 140-250 nm...
March 18, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28314988/polymeric-micelles-as-mighty-nanocarriers-for-cancer-gene-therapy-a-review
#6
REVIEW
Mahsa Yousefpour Marzbali, Ahmad Yari Khosroushahi
PURPOSE: Gene therapy has shown extensive potential to treat human diseases occurring from the defection of genes like various types of cancers. The cationic polymers, as non-viral gene carriers, offer the ability to engineer carrier systems having customized features that can be adapted to suit any system. Upon polymeric micelle systems' core-shell structure, micelles can create the capacity to load genes/gene-drugs into the different micelle compartments, respectively. METHODS: The search will be managed in Pubmed, Medline, Cochrane library, Embase and Proquest for articles related to polymeric micelle-based gene delivery in order to cancer gene therapy using the accommodative search terms...
March 17, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28260893/enhancing-the-oral-bioavailability-of-biochanin-a-by-encapsulation-in-mixed-micelles-containing-pluronic-f127-and-plasdone-s630
#7
Xiaoyan Wu, Weihong Ge, Tengfei Shao, Weijun Wu, Jian Hou, Li Cui, Jing Wang, Zhenghai Zhang
Biochanin A (BCA), a natural dietary isoflavone, has been reported to show anticancer activities. However, its low biological availability and poor aqueous solubility limit its usefulness as a chemotherapeutic agent. We developed BCA-loaded micelles with Pluronic F127 and Plasdone S630 (BCA-FS). The optimized, spherical-shaped BCA-FS was obtained at a ratio of 1:1 (F127:S630). The particle size was 25.17±1.2 nm, and the zeta potential was -10.9±0.24 mV. BCA solubility in water increased to 5.0 mg/mL after encapsulation, and the drug-loading efficiency was 5...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28166625/indocyanine-green-labeled-polysarcosine-for-in-vivo-photoacoustic-tumor-imaging
#8
Kohei Sano, Manami Ohashi, Kengo Kanazaki, Akira Makino, Ning Ding, Jun Deguchi, Yuko Kanada, Masahiro Ono, Hideo Saji
Photoacoustic (PA) imaging has been considered an attractive imaging modality for sensitive and in-depth imaging of biomolecules with a high resolution in vivo. PA imaging probes utilizing fluorescence dyes, including indocyanine green (ICG), have been proposed to enhance PA signal intensity. On the other hand, nanomicelles modified with polysarcosine (PSar), a biocompatible hydrophilic polymer, on their surface have previously achieved rapid tumor uptake, suggesting active transport of PSar into tumor tissues...
February 21, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28165815/effective-improvement-of-the-neuroprotective-activity-after-spinal-cord-injury-by-synergistic-effect-of-glucocorticoid-with-biodegradable-amphipathic-nanomicelles
#9
YueLong Wang, Min Wu, Lei Gu, XiaoLing Li, Jun He, LiangXue Zhou, Aiping Tong, Juan Shi, HongYan Zhu, JianGuo Xu, Gang Guo
Dexamethasone acetate (DA) produces neuroprotective effects by inhibiting lipid peroxidation and inflammation by reducing cytokine release and expression. However, its clinical application is limited by its hydrophobicity, low biocompatibility and numerous side effects when using large dosage. Therefore, improving DA's water solubility, biocompatibility and reducing its side effects are important goals that will improve its clinical utility. The objective of this study is to use a biodegradable polymer as the delivery vehicle for DA to achieve the synergism between inhibiting lipid peroxidation and inflammation effects of the hydrophobic-loaded drugs and the amphipathic delivery vehicle...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28152267/redox-activatable-atp-depleting-micelles-with-dual-modulation-characteristics-for-multidrug-resistant-cancer-therapy
#10
Hebin Wang, Yang Li, Miaozun Zhang, Di Wu, Youqing Shen, Guping Tang, Yuan Ping
A fast adenosine triphosphate (ATP)-depleting micellar system that is activated by intracellular redox for the codelivery of anticancer drug paclitaxel (PTX) and small interference RNA (siRNA) targeting polo-like kinase1 (PLK1) is developed to address the key challenges of multidrug-resistant (MDR) cancer therapy. The ATP-depleting micelle is self-assembled from a redox-responsive amphiphilic polymer (termed as bPEG-SS-P123-PEI (PSPP)) that is composed of biocompatible branched polyethylene glycol (PEG) with 8 arms (bPEG), ATP-depleting Pluronic P123 (P123), and cationic low molecular weight polyethylenimine (PEI) blocks...
February 2, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28121449/suzuki-miyaura-micellar-cross-coupling-in-water-at-room-temperature-and-under-aerobic-atmosphere
#11
Sara Mattiello, Myles Rooney, Alessandro Sanzone, Paolo Brazzo, Mauro Sassi, Luca Beverina
Recently, oxygen-equilibrated water solutions of Kolliphor EL, a well-known surfactant, have been seen to form nanomicelles with oxygen-free cores. This has prompted the successful testing of the core environment as a green medium for palladium-catalyzed Suzuki-Miyaura cross couplings. The versatility of these conditions is endorsed by several examples, including the synthesis of relevant molecular semiconductors. The reaction medium can also be recycled, opening the way for an extremely easy and green chemistry compliant methodology...
January 25, 2017: Organic Letters
https://www.readbyqxmd.com/read/28115254/design-synthesis-and-evaluation-of-biotin-decorated-inulin-based-polymeric-micelles-as-long-circulating-nanocarriers-for-targeted-drug-delivery
#12
Delia Mandracchia, Antonio Rosato, Adriana Trapani, Theodora Chlapanidas, Isabella Monia Montagner, Sara Perteghella, Cinzia Di Franco, Maria Luisa Torre, Giuseppe Trapani, Giuseppe Tripodo
Here, long-circulating behaviors of Inulin-based nanomicelles are demonstrated for the first time in vivo. We show the synthesis and evaluation of biotin (BIO)-decorated polymeric INVITE micelles constituted of substances of natural origin, Inulin (INU) and Vitamin E (VITE), as long-circulating carriers for receptor-mediated targeted drug delivery. The resulting INVITE or INVITE-BIO micelles, nanometrically sized, did not reveal any cytotoxicity after 24h of incubation with Caco-2 cells. Moreover, in vitro studies on Caco-2 cells monolayers indicated that the transport of INVITE-BIO micelles was faster than surface unmodified INVITE micelles...
April 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28097871/redox-responsive-self-assembly-micelles-from-poly-n-acryloylmorpholine-block-2-acryloyloxyethyl-ferrocenecarboxylate-amphiphilic-block-copolymers-as-drug-release-carriers
#13
Feng Xu, He Li, Yan-Ling Luo, Wei Tang
Novel well-defined redox-responsive ferrocene-containing amphiphilic block copolymers (PACMO-b-PAEFC) were synthesized by ATRP, with poly(N-acryloylmorpholine) (PACMO) as hydrophilic blocks and poly(2-acryloyloxyethyl ferrocenecarboxylate) (PAEFC) as hydrophobic blocks. The copolymers were characterized by FT-IR and (1)H NMR spectroscopies and gel permeation chromatography, and the crystalline behavior was determined by X-ray diffraction and small-angle X-ray scattering. The results showed that the size of the lamellar crystals and crystallinity vary with the systematic compositions while the periodic structure of the lamellar stacks has no obvious change...
February 2, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28093940/self-targeted-salinomycin-loaded-dspe-peg-methotrexate-nanomicelles-for-targeting-both-head-and-neck-squamous-cell-carcinoma-cancer-cells-and-cancer-stem-cells
#14
Minhui Zhu, Shicai Chen, Libo Hua, Caiyun Zhang, Mengjie Chen, Donghui Chen, Yinmei Dong, Yingying Zhang, Meng Li, Xianmin Song, Huaiwen Chen, Hongliang Zheng
AIM: To target both head and neck squamous cell carcinoma (HNSCC) cells and cancer stem cells (CSCs) by salinomycin-loaded DSPE-PEG-MTX (synthesized using DSPE-PEG2000-NH2 and methotrexate) nanomicelles (M-SAL-MTX). MATERIALS & METHODS: The characterization, antitumor activity and mechanism of M-SAL-MTX were evaluated. RESULTS & CONCLUSION: M-SAL-MTX showed enhanced inhibitory effect toward both HNSCC CSCs and non-CSCs compared with a single treatment of methotrexate and salinomycin...
January 17, 2017: Nanomedicine
https://www.readbyqxmd.com/read/28091396/anti-angiogenic-activity-and-antitumor-efficacy-of-amphiphilic-twin-drug-from-ursolic-acid-and-low-molecular-weight-heparin
#15
Wenming Cheng, Fatima Zohra Dahmani, Juan Zhang, Hui Xiong, Yuanyuan Wu, Lifang Yin, Jianping Zhou, Jing Yao
Heparin, a potential blood anti-coagulant, is also known for its binding ability to several angiogenic factors through electrostatic interactions due to its polyanionic character. However, the clinical application of heparin for cancer treatment is limited by several drawbacks, such as unsatisfactory therapeutic effects and severe anticoagulant activity that could induce hemorrhaging. Herein, low molecular weight heparin (LMWH) was conjugated to ursolic acid (UA), which is also an angiogenesis inhibitor, by binding the amine group of aminoethyl-UA (UA-NH2) with the carboxylic groups of LMWH...
February 17, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28024380/redox-activated-light-up-nanomicelle-for-precise-imaging-guided-cancer-therapy-and-real-time-pharmacokinetic-monitoring
#16
Xingang Liu, Min Wu, Qinglian Hu, Hongzhen Bai, Shuoqing Zhang, Youqing Shen, Guping Tang, Yuan Ping
Simultaneous tumor imaging, therapy, and pharmacokinetic monitoring can offer a safe and effective strategy for cancer therapy. This work describes the design of a fluorescence light-up nanomicelle that can afford precise imaging-guided drug delivery and pharmacokinetic monitoring in a real-time fashion for cancer chemotherapy. The nanomicelle, which contains a boron dipyrromethene based fluorescent probe as the hydrophobic core and a redox-triggered detachable poly(ethylene glycol) (PEG) shell, can accumulate at the tumor site via enhanced permeation and retention effect...
December 27, 2016: ACS Nano
https://www.readbyqxmd.com/read/27997200/effects-of-co-solvents-on-reactions-run-under-micellar-catalysis-conditions
#17
Christopher M Gabriel, Nicholas R Lee, Florence Bigorne, Piyatida Klumphu, Michael Parmentier, Fabrice Gallou, Bruce H Lipshutz
The impact of varying percentages of an organic solvent added to reactions run in aqueous nanomicelles as the reaction medium has been investigated. Issues such as rates of reaction, percent conversion, and yield, as well as various practical aspects (e.g., effect on stirring, etc.), are discussed, leading to an operationally simple method for the general improvement of potentially problematic systems across a broad range of reaction types, in particular for reactions run at scale.
December 20, 2016: Organic Letters
https://www.readbyqxmd.com/read/27977187/effect-of-linear-hyperbranched-amphiphilic-phosphate-esters-on-collagen-fibers
#18
Xuechuan Wang, Xiaoxiao Guo, Haijun Wang, Peiying Guo
The surfactants of the linear-hyperbranched phosphate esters (PAMAMGn-3-Ps) have been constructed through random multibranching esterification of lauroyl chloride and phosphate ester as a branching agent. Subsequently, a series of surfactant products were obtained. Benefiting from the amphiphilic structure with the hydrophilic core and many hydrophobic tails, PAMAMGn-3-Ps were able to self-assemble into nanomicelles in aqueous media. Importantly, the polymers show low critical micelle concentrations (CMCs) and small particle sizes...
January 11, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/27920521/celastrol-nanomicelles-attenuate-cytokine-secretion-in-macrophages-and-inhibit-macrophage-induced-corneal-neovascularization-in-rats
#19
Zhanrong Li, Jingguo Li, Lei Zhu, Ying Zhang, Junjie Zhang, Lin Yao, Dan Liang, Liya Wang
The aim of the present study was to investigate the inhibitory effects of celastrol-loaded nanomicelles (CNMs) on activated macrophage-induced corneal neovascularization (CNV) in rats and cytokine secretion in macrophages. Using an angiogenesis assay in vitro, we detected the effects of CNMs on human umbilical vein endothelial cell (HUVEC) migration and invasion. In addition, the expression levels of cytokines secreted from hypoxia-induced macrophages were assessed through cytokine array analysis. The expression of hypoxia-inducible factors-1α (HIF-1α), nuclear factor-kappa B p65 (NF-κB p65), phospho-nuclear factor-kappa B p65 (phospho-NF-κB p65), p38 mitogen-activated protein kinase (p38 MAPK), phospho-p38 MAPK, extracellular signal-regulated kinase 1/2 (ERK1/2), and phospho-ERK1/2 was analyzed by western blotting...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27843316/nanomicelles-loaded-with-doxorubicin-and-curcumin-for-alleviating-multidrug-resistance-in-lung-cancer
#20
Yue Gu, Jing Li, Yang Li, Lei Song, Dan Li, Liping Peng, Ying Wan, Shucheng Hua
PURPOSE: A new type of polymeric micelle (PM) was assembled using a polyethylene glycol (PEG)-linked (PEGylated) amphiphilic copolymer and d-tocopheryl PEG1000 succinate (TPGS1000). The micelles were used to deliver doxorubicin (DOX) and curcumin (CUR) for alleviating multidrug resistance (MDR) in lung cancer cells while enhancing the therapeutic efficacy of DOX. METHODS: Micelles loaded with DOX and CUR were assembled using a film-forming technique. Micelles were used to treat A549/Adr cells to find out whether micelles had the ability to reverse the MDR of A549/Adr cells...
2016: International Journal of Nanomedicine
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