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Nano paclitaxel

Shruti GuhaSarkar, Prachi More, Rinti Banerjee
Instillations of therapeutic agents into the urinary bladder have limited efficacy due to drug washout and inadequate attachment to and penetration into the bladder wall. Instilled nanoparticles alone have low stability and high susceptibility to washout, while gel-based systems are difficult to administer and retain. To overcome disadvantages of current technologies, a biodegradable, in situ-gelling liposome-in-gel (LP-Gel) system was developed for instillation into the bladder, composed of nano-sized, fluidizing liposomes incorporated into a "smart" biopolymeric, urine-triggered hydrogel...
November 29, 2016: Journal of Controlled Release: Official Journal of the Controlled Release Society
Zeng Liu, Yuan-Yuan Zhu, Zhao-Yuan Li, Si-Qing Ning
The aim of the present study was to evaluate the efficacy of paclitaxel combined with curcumin (CUR) against drug resistance in ovarian cancer cells. PLGA-phospholipid-PEG nanoparticles were prepared using the nano precipitation method. The size and morphology of the nanoparticles were determined using a transmission electron microscope and particle size analyzer. The encapsulation efficiency of nanoparticles was determined using the ultrafiltration centrifugation method. The dialysis method was used to study the release of PLGA-phospholipid-PEG nanoparticles...
November 2016: Oncology Letters
Jing Ma, Ming Shen, Chang Song Xu, Ying Sun, You Rong Duan, Lian Fang Du
A porous-structure nano-scale ultrasound contrast agent (UCA) was made of monomethoxypoly (ethylene glycol)-poly (lactic-co-glycolic acid) (mPEG-PLGA), and modified by double-targeted antibody: anti-carcinoembryonic antigen (CEA) and anti-carbohydrate antigen 19-9 (CA19-9), as a double-targeted nanoparticles (NPs). Anti-tumor drug paclitaxel (PTX) was encapsulated in the double-targeted nanoparticles (NPs). The morphor and release curve were characterized. We verified a certain anticancer effect of PTX-NPs through cytotoxicity experiments...
November 9, 2016: Oncotarget
Mohammad Najlah, Mohit Jain, Ka-Wai Wan, Waqar Ahmed, Mohamed Albed Alhnan, David A Phoenix, Kevin M G Taylor, Abdelbary Elhissi
In this study the anticancer activity of paclitaxel-loaded nano-liposomes on glioma cell lines was investigated. Soya phosphatidylcholine: cholesterol (SPC:Chol), hydrogenated soya phosphatidylcholine: cholesterol (HSPC:Chol) or dipalmitoylphosphatidylcholine: cholesterol (DPPC:Chol) in 1:1 mole ratio were used to prepare ethanol-based proliposomes. Following hydration of proliposomes, the size of resulting vesicles was subsequently reduced to nanometre scale via probe-sonication. The resulting formulations were characterised in terms of size, zeta potential and morphology of the vesicles, and entrapment efficiency of paclitaxel (PX) as well as the final pH of the preparations...
November 11, 2016: Journal of Liposome Research
Yanping Cheng, Masahiko Shibuya, Jenn McGregor, Gerard B Conditt, Geng-Hua Yi, Greg L Kaluza, William Gray, Manish Doshi, Prakash Sojitra, Juan F Granada
AIMS: The aim of this study was to evaluate the biological efficacy of a novel lower-dose (2.5 µg/mm2) encapsulated paclitaxel nanocrystal-coated balloon (Nano-PCB) in the familial hypercholesterolaemic swine (FHS) model of iliofemoral in-stent restenosis. METHODS AND RESULTS: Nano-PCB pharmacokinetics were assessed in 20 femoral arteries (domestic swine). Biological efficacy was evaluated in ten FHS: 14 days following bare metal stent implantation each stent segment was randomised to a clinically available PCB (IN...
October 20, 2016: EuroIntervention
Kasturi Muthoosamy, Ibrahim Babangida Abubakar, Renu Geetha Bai, Hwei-San Loh, Sivakumar Manickam
Metastasis of lung carcinoma to breast and vice versa accounts for one of the vast majority of cancer deaths. Synergistic treatments are proven to be the effective method to inhibit malignant cell proliferation. It is highly advantageous to use the minimum amount of a potent toxic drug, such as paclitaxel (Ptx) in ng/ml together with a natural and safe anticancer drug, curcumin (Cur) to reduce the systemic toxicity. However, both Cur and Ptx suffer from poor bioavailability. Herein, a drug delivery cargo was engineered by functionalizing reduced graphene oxide (G) with an amphiphilic polymer, PF-127 (P) by hydrophobic assembly...
2016: Scientific Reports
Mohammed Anwar, Sohail Akhter, Neha Mallick, Sharmistha Mohapatra, Sobiya Zafar, M Moshahid A Rizvi, Asgar Ali, Farhan J Ahmad
Cancer chemotherapeutic drug containing PEGylated lipidic nanocapsules (D-LNCs) were formulated by the controlled addition of organic phase (combined solution of paclitaxel and curcumin in a mixture of oleic acid and MPEG2000-DSPE (90:2.5 molar ratio) in acetone) to the aqueous phase (consist of Poloxamer 407 as emulsifying agents and glycerol as a co-solvent) at a temperature of 55-60°C followed by evaporation of organic solvent. The obtained pre-colloidal dispersion of D-LNCs was processed through high pressure homogenization to get more uniformly and nano-sized particles...
August 19, 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
Yan Peng, Xiumei Zhu, Liyan Qiu
MiR-200c has been confirmed to display remarkable effects on proliferation inhibition and apoptosis induction of certain cancer cells, but the main challenge for its successful translation into the clinic remains its effective delivery to the action site in vivo. In this study, a novel composite polyphosphazene vesicle system composed of amphiphilic [NP(PEG)0.3(EAB)1.7]n (PEEP) and weakly cationic [NP(PEG)0.5(DPA)1.5]n (PEDP) was prepared via a very simple dialysis method. The loading of miR-200c was accomplished with high efficiency by taking advantage of the combination effect of physical encapsulation and electrostatic interaction between vectors and miR-200c...
November 2016: Biomaterials
Jin-Seok Choi, Jeong-Sook Park
In this study, we investigated the influence of paclitaxel nanocrystals (PTX-NC) surface charge on cell internalization and cell cytotoxicity. PTX-NCs were prepared using the nano-precipitation method. The surface-modified PTX-NCs were prepared using an absorption method with positively charged poly(allylamine hydrochloride) (PAH) and negatively charged poly(sodium 4-styrenesulfonate) (PSS). The morphologies of the surface-modified and unmodified PTX-NCs were characterized by field emission scanning electron microscopy...
October 10, 2016: European Journal of Pharmaceutical Sciences
Cong Luo, Jin Sun, Dan Liu, Bingjun Sun, Lei Miao, Sara Musetti, Jing Li, Xiaopeng Han, Yuqian Du, Lin Li, Leaf Huang, Zhonggui He
Chemotherapeutic efficacy can be greatly improved by developing nanoparticulate drug delivery systems (nano-DDS) with high drug loading capacity and smart stimulus-triggered drug release in tumor cells. Herein, we report a novel redox dual-responsive prodrug-nanosystem self-assembled by hydrophobic small-molecule conjugates of paclitaxel (PTX) and oleic acid (OA). Thioether linked conjugates (PTX-S-OA) and dithioether inserted conjugates (PTX-2S-OA) are designed to respond to the redox-heterogeneity in tumor...
September 14, 2016: Nano Letters
Fei Li, Xiaofei Zhou, Hongyu Zhou, Jianbo Jia, Liwen Li, Shumei Zhai, Bing Yan
Repeated administrations of anti-cancer drugs to patients often induce drug resistance. P-glycoprotein (Pgp) facilitates an efficient drug efflux, preventing cellular accumulation of drugs and causing multi-drug resistance (MDR). In this study, we developed a gold-paclitaxel nanoconjugate system to overcome MDR. Gold nanoparticles (GNPs) were conjugated with β-cyclodextrin enclosing paclitaxel (PTX) molecules and PEG molecules. GNP conjugates were effectively endocytosed by both drug-sensitive human lung cancer H460 cells and Pgp-overexpressed drug-resistant H460PTX cells...
2016: PloS One
Anita K Bakrania, Bhavesh C Variya, Snehal S Patel
Triple negative breast cancer is defined as one of the utmost prevailing breast cancers worldwide, possessing an inadequate prognosis and treatment option limited to chemotherapy and radiotherapy, creating a challenge for researchers as far as developing a specific targeted therapy is concerned. The past research era has shown several promising outcomes for TNBC such as nano-formulations of the chemotherapeutic agents already used for the management of the malignant tumor. Taking a glance at paclitaxel nano formulations, it has been proven beneficial in several researches in the past decade; nevertheless its solubility is often a challenge to scientists in achieving success...
September 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
Fariba Ghasemvand, Esmaeil Biazar, Sara Tavakolifard, Mohammad Khaledian, Saeid Rahmanzadeh, Daruosh Momenzadeh, Roshanak Afroosheh, Faezeh Zarkalami, Marjan Shabannezhad, Saeed Hesami Tackallou, Nilofar Massoudi, Saeed Heidari Keshel
AIM: The aim of this study was to design multi-walled carbon nanotubes (MWCNTs) loaded with paclitaxel (PTX) anti-cancer drug and investigate its anti-cancerous efficacy of human gastric cancer. BACKGROUND: Carbon nanotubes (CNTs) represent a novel nano-materials applied in various fields such as drug delivery due to their unique chemical properties and high drug loading. PATIENTS AND METHODS: In this study, multi-walled carbon nanotubes (MWCNTs) pre-functionalized covalently with a paclitaxel (PTX) as an anti-cancer drug and evaluated by different analyses including, scanning electron microscope (SEM), particle size analyzer and cellular analyses...
2016: Gastroenterology and Hepatology From Bed to Bench
Jingjing Sun, Yichao Chen, Ke Li, Yixian Huang, Xiaofeng Fu, Xiaolan Zhang, Wenchen Zhao, Yuan Wei, Liang Xu, Peijun Zhang, Raman Venkataramanan, Song Li
UNLABELLED: In order to achieve enhanced and synergistic delivery of paclitaxel (PTX), a hydrophobic anticancer agent, two novel prodrug copolymers, POEG15-b-PFTS6 and POEG15-b-PFTS16 composed of hydrophilic poly(oligo(ethylene glycol) methacrylate) (POEG) and hydrophobic farnesylthiosalicylate (FTS, a nontoxic Ras antagonist) blocks, were synthesized. Both POEG-b-PFTS polymers were able to form micelles with intrinsic antitumor activity in vitro and in vivo. Employing these micelles as a carrier to load PTX, their drug loading capacity, stability, in vivo biodistribution and tumor inhibition effect were evaluated...
October 1, 2016: Acta Biomaterialia
Ezequiel Bernabeu, Lorena Gonzalez, Maria J Legaspi, Marcela A Moretton, Diego A Chiappetta
Nanomedicines have become an attractive platform for the development of novel drug delivery systems in cancer chemotherapy. Polymeric nanoparticles (NPs) represent one of the best well-investigated nanosized carriers for delivery of antineoplastic compounds. The "Pegylation strategy" of drug delivery systems has been used in order to improve carrier biodistribution, however, some nanosized systems with PEG on their surface have exhibited poorly-cellular drug internalization. In this context, the purpose of the present study was to compare in vitro performance of two paclitaxel (PTX)-loaded NPs systems based on two biocompatible copolymers of alpha tocopheryl polyethylene glycol 1000 succinate-block-poly(ε-caprolactone) (TPGS-b-PCL) and methoxyPEG- block-poly(ε-caprolactone) (mPEG-b-PCL) in terms of citotoxicity and PTX cellular uptake...
January 2016: Journal of Nanoscience and Nanotechnology
Hemda Baabur-Cohen, Laura Vossen, Harald Rune Krüger, Anat Eldar-Boock, Eilam Yeini, Natalie Landa-Rouben, Galia Tiram, Stefanie Wedepohl, Ela Markovsky, Jonathan Leor, Marcelo Calderón, Ronit Satchi-Fainaro
Nowadays, combination therapy became a standard in oncology. In this study, we compare the activity of two polymeric carriers bearing a combination of the anticancer drugs paclitaxel (PTX) and doxorubicin (DOX), which differ mainly in their architecture and supramolecular assembly. Drugs were covalently bound to a linear polymer, polyglutamic acid (PGA) or to a dendritic scaffold, polyglycerol (PG) decorated with poly(ethylene glycol) (PEG), forming PGA-PTX-DOX and PG-PTX-bz-DOX-PEG, respectively. We explored the relationship between the polymeric architectures and their performance with the aim to augment the pharmacological benefits of releasing both drugs simultaneously at the tumor site at a synergistic ratio...
June 30, 2016: Journal of Controlled Release: Official Journal of the Controlled Release Society
H Z Liu, X M Liu, X C Liu, C Z Zhang, H Q Liu
This study aimed to discuss the co-suppression of vitamin C-contained composite nano-drug carrier and its drug delivery to nidus in tumor cells. Amphiphilic polymers PLA-block-PAAA and block polymer PLA-PEG4000-Maleimide, PLA-block-PAAA and PLA-PEG4000-Maleimide composite nano-micelles were prepared, and, PLA-block-PAAA polymer-coated Nile red nano-micelle, PLA-block-PAA and PLA-PEG4000-Maleimide composite nano-micelles as well as paclitaxel-carrying composite nano-micelle in different molar ratios were given stability tests...
April 2016: Journal of Biological Regulators and Homeostatic Agents
Ting Kang, Qianqian Zhu, Di Jiang, Xingye Feng, Jingxian Feng, Tianze Jiang, Jianhui Yao, Yixian Jing, Qingxiang Song, Xinguo Jiang, Xiaoling Gao, Jun Chen
The pathological and physiological barriers of glioblastoma multiforme (GBM) lead to insufficient extravasation and penetration of nano-sized therapeutics. As the main driver of interstitial fluid pressure-related drug efflux, the aberrant extracellular matrix (ECM) appears to be a valuable target that plays a crucial role in forming pathological barriers of GBM. Herein, a new Ft peptide was synthesized by coupling FHK and tLyp-1 sequence together via a cysteine to synergistically target glioma-associated tenascin C (extracellular matrix component) and neuropilin-1 on neovasculature and glioma cells to enable specific penetration of nanoparticles for anti-glioblastoma treatment...
September 2016: Biomaterials
Maria Filippousi, Stuart Turner, Karen Leus, Panoraia I Siafaka, Eirini D Tseligka, Matthias Vandichel, Stavroula G Nanaki, Ioannis S Vizirianakis, Dimitrios N Bikiaris, Pascal Van Der Voort, Gustaaf Van Tendeloo
Nanoscale Zr-based metal organic frameworks (MOFs) UiO-66 and UiO-67 were studied as potential anticancer drug delivery vehicles. Two model drugs were used, hydrophobic paclitaxel and hydrophilic cisplatin, and were adsorbed onto/into the nano MOFs (NMOFs). The drug loaded MOFs were further encapsulated inside a modified poly(ε-caprolactone) with d-α-tocopheryl polyethylene glycol succinate polymeric matrix, in the form of microparticles, in order to prepare sustained release formulations and to reduce the drug toxicity...
July 25, 2016: International Journal of Pharmaceutics
Lindsey E Minion, Dana M Chase, John H Farley, Lyndsay J Willmott, Bradley J Monk
BACKGROUND: After platinum and taxane chemotherapy, with or without bevacizumab, active regimens for advanced or recurrent cervical cancer are lacking. Our objective was to review a single institution experience in treating recurrent, refractory cervical cancer with nano-particle albumin bound (NAB) paclitaxel with or without bevacizumab. METHODS: This retrospective case series was conducted in accordance with the regulations set forth by the Institutional Review Board at St...
2016: Gynecologic Oncology Research and Practice
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