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cancer and folic acid

Nemany A Hanafy, Luciana Dini, Cinzia Citti, Giuseppe Cannazza, Stefano Leporatti
Glucose consumption in many types of cancer cells, in particular hepatocellular carcinoma (HCC), was followed completely by over-expression of type II hexokinase (HKII). This evidence has been used in modern pharmacotherapy to discover therapeutic target against glycolysis in cancer cells. Bromopyruvate (BrPA) exhibits antagonist property against HKII and can be used to inhibit glycolysis. However, the clinical application of BrPA is mostly combined with inhibition effect for healthy cells particularly erythrocytes...
January 10, 2018: Nanomaterials
Maria Jarvis, Michael Arnold, Jenna Ott, Kapil Pant, Balabhaskar Prabhakarpandian, Samir Mitragotri
In vitro and in vivo assessment of safety and efficacy are the essential first steps in developing nanoparticle-based therapeutic systems. However, it is often challenging to use the knowledge gained from in vitro studies to predict the outcome of in vivo studies since the complexity of the in vivo environment, including the existence of flow and a multicellular environment, is often lacking in traditional in vitro models. Here, we describe a microfluidic co-culture model comprising 4T1 breast cancer cells and EA...
September 2017: Bioengineering & Translational Medicine
Jiawang Guo, Xia Zhao, Jun Hu, Yuan Lin, Qian Wang
Cell-based ELISA (CELLISA) has been widely used in disease diagnoses due to its simplicity and low cost. Recently, peroxidase-like nanomaterials have emerged as promising systems for CELLISA applications. In this work, Tobacco mosaic virus (TMV) was simultaneously tailored with peroxidase-like inorganic nanoparticles (platinum nanoparticles) and cancer cell target groups (folic acid) to obtain TMV-FA-Pt nanoparticles for cancer cell detection. Induced by the uniformly distributed reactive groups and well-defined structure of the TMV particle, platinum nanoparticles could be grown in situ on the exterior surface of TMV with excellent monodispersity and uniform spatial distribution...
January 4, 2018: Molecular Pharmaceutics
Catiúscia P de Oliveira, Sabrina L Büttenbender, Willian A Prado, Aline Beckenkamp, Ana C Asbahr, Andréia Buffon, Silvia S Guterres, Adriana R Pohlmann
Methotrexate is a folic acid antagonist and its incorporation into nanoformulations is a promising strategy to increase the drug antiproliferative effect on human breast cancer cells by overexpressing folate receptors. To evaluate the efficiency and selectivity of nanoformulations containing methotrexate and its diethyl ester derivative, using two mechanisms of drug incorporation (encapsulation and surface functionalization) in the in vitro cellular uptake and antiproliferative activity in non-tumoral immortalized human keratinocytes (HaCaT) and in human breast carcinoma cells (MCF-7)...
January 4, 2018: Nanomaterials
Arun Kumar T Thulasidasan, Archana P Retnakumari, Mohan Shankar, Vinod Vijayakurup, Shabna Anwar, Sanu Thankachan, Kavya S Pillai, Jisha J Pillai, C Devika Nandan, Vijai V Alex, Teena Jacob Chirayil, Sankar Sundaram, Gopalakrishnapillai Sankaramangalam Vinod Kumar, Ruby John Anto
Nanoencapsulation has emerged as a novel strategy to enhance the pharmacokinetic and therapeutic potential of conventional drugs. Recent studies from our lab have established the efficacy of curcumin in sensitizing cervical cancer cells and breast cancer cells towards paclitaxel and 5-FU chemotherapy respectively. Factors that hinder the clinical use of curcumin as a sensitizer or therapeutic agent include its poor bioavailability and retention time. Earlier reports of improvement in bioavailability and retention of drugs upon nanoencapsulation have motivated us in developing various nanoformulations of curcumin, which were found to exhibit significant enhancement in bioavailability and retention time as assessed by our previous in vitro studies...
December 8, 2017: Oncotarget
Ana Loureiro, Jennifer Noro, Ana S Abreu, Eugénia Nogueira, Diana Soares da Costa, Carla Silva, Artur Cavaco-Paulo
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 nanoparticles disruption inside cancer cells (folate receptor, FR, positive cells)...
January 1, 2018: Molecular Pharmaceutics
Qi Sun, Qing You, Jinping Wang, Li Liu, Yidan Wang, Yilin Song, Yu Cheng, Siyu Wang, Fengping Tan, Nan Li
Mesoporous silica nanoparticles (MSNs) have long since been investigated to provide a versatile drug delivery platform due to its multitudinous merits. Presently, gadolinium (Gd), a T1 magnetic resonance imaging (MRI) contrast agent, was doped into MSNs as a newly emerging theranostic nanocomposite, which has received much research attention. However, it is still concerned about the dispersibility and drug leakage of MSNs. Hence, in this project, we constructed an NIR irradiation triggered, triple-modal imaging guided nanoplatform based on doxorubicin (DOX) @ Gd doped-MSNs, conjugating with indocyanine green (ICG) loaded thermosensitive liposomes (designated as DOX@GdMSNs-ICG-TSLs)...
December 25, 2017: ACS Applied Materials & Interfaces
Sathish Sundar Dhilip Kumar, A Mahesh, M Gover Antoniraj, Hanumant Singh Rathore, N N Houreld, Ruckmani Kandasamy
In this study, the green synthesis of gum kondagogu capped gold nanoparticles (GK-GNPs) was prepared using a naturally available polysaccharide. The anionic gum capped GK-GNPs enabled the successful coupling of folic acid (FA) and fluorescein isothiocyanate (FITC) to produce a fluorescently labelled GNP (F2-GNP). F2-GNPs were further characterized using different physicochemical methods Cellular viability, cellular imaging, and targeted delivery of F2-GNPs were further evaluated in both folate receptor positive (MCF-7) and folate receptor negative (A549) cancer cells...
December 16, 2017: International Journal of Biological Macromolecules
Eskandar Moghimipour, Farid Abedin Dorkoosh, Mohsen Rezaei, Zahra Ramezani, Mohsen Amini, Maryam Kouchak, Kambiz Ahmadi Angali, Somayeh Handali
The aim of this study was to develop a liposomal formulation to selectively target cancer cells. Liposomes were prepared using thin layer method and folic acid (FA) was applied for targeted delivery of 5FU to cancer cells. Liposomes prepared were characterized for encapsulation efficiency (EE%), morphology and their particle size. Cellular uptake, cytotoxicity study and ROS production were evaluated using CT26 cell line. Hemolysis test was performed on rat red blood cells (RBCs). Moreover, the efficacy of targeted liposomes were investigated by in vivo antitumor activity and tissue toxicities were studied by histological examination...
December 13, 2017: European Journal of Pharmaceutical Sciences
Gerile Oudeng, Manting Au, Jingyu Shi, Chunyi Wen, Mo Yang
Here, we report the one-step in-situ detection of targeted miRNAs expression in single living cancer cells via MoS2 nanosheets based fluorescence on/off probes. The strategy is based on the folic acid-polyethylene glycol (FA-PEG) functionalized MoS2 nanosheets with adsorbed dye-labeled single-stranded DNA (ssDNA). Once the nanoprobes are internalized into cancer cells, the hybridization between the probes and target miRNA results in the detachment dye-labeled ssDNA from MoS2 nanosheets surface, leading to the green fluorescence recovery...
December 14, 2017: ACS Applied Materials & Interfaces
Jaber Beik, Maryam Jafariyan, Alireza Montazerabadi, Ali Ghadimi-Daresajini, Parastoo Tarighi, Alireza Mahmoudabadi, Habib Ghaznavi, Ali Shakeri-Zadeh
X-ray computed tomography (CT) requires an optimal compromise between image quality and patient dose. While high image quality is an important requirement in CT, the radiation dose must be kept minimal to protect the patients from ionizing radiation-associated risks. The use of probes based on gold nanoparticles (AuNPs) along with active targeting ligands for specific recognition of cancer cells may be one of the balanced solutions. Herein, we report the effect of folic acid (FA)-modified AuNP as a targeted nanoprobe on the contrast enhancement of CT images as well as its potential for patient dose reduction...
December 12, 2017: Artificial Cells, Nanomedicine, and Biotechnology
Guilong Zhang, Ruohong Du, Junchao Qian, Xiaojia Zheng, Xiaohe Tian, Dongqing Cai, Jiacai He, Yiqun Wu, Wei Huang, Yuanyin Wang, Xin Zhang, Kai Zhong, Duohong Zou, Zhengyan Wu
Considering the chemical exchange between gadolinium centers and water protons, nanosystems comprising gadolinium conjugated with high specific area nanocarriers might serve as more robust clinical tools for diagnosis and imaging-guided therapy. Herein, a pH-responsive nanosystem containing graphene oxide conjugated with a folic acid- and gadolinium-labeled dendrimer (FA-GCGLD) to boost its T1 contrast ability was developed, and doxorubicin (DOX) and colchicine (COLC) were efficiently loaded onto this nanosystem (FA-GCGLD-DOX/COLC)...
December 21, 2017: Nanoscale
Lihua Li, Xianfeng Yang, Xiaoming Hu, Yao Lu, Liping Wang, Mingying Peng, Hong Xia, Qingshui Yin, Yu Zhang, Gang Han
Actively targeted hollow nanoparticles may play key roles in precise anti-cancer therapy. Here, unique Cu39S28 hollow nanopeanuts (HNPs) were synthesized via a facile one-step method and the formation mechanism was illustrated. The as-synthesized Cu39S28 HNPs exhibit outstanding photothermal conversion efficiency (41.1%) and drug storage capacity (DOX, 99.5 %). At the same time, the DOX drug loading nanocomposites have shown great sensitive response of release to either pH value or near infrared ray (NIR). In particular, the folic acid (FA) can easily conjugate with the synthesized Cu39S28 HNPs without further modification to get a targeted effect...
September 7, 2017: Journal of Materials Chemistry. B, Materials for Biology and Medicine
Moonseong Park, Charles Soon Hong Hwang, Ki-Hun Jeong
Plasmonic alloy has attracted much interest in tailoring localized surface plasmon resonance (LSPR) for recent biosensing techniques. In particular, paper-based plasmonic substrates allow capillary-driven lateral flow as well as three-dimensional metal nanostructures and therefore they become actively transferred to LSPR-based biosensing such as surface-enhanced Raman spectroscopy (SERS) or metal-enhanced fluorescence (MEF). However, employing plasmonic alloy nanoislands on heat-sensitive substrate is still challenging, which significantly inhibits broad-range tailoring of the plasmon resonance wavelength (PRW) for superior sensitivity...
December 8, 2017: ACS Applied Materials & Interfaces
Xiaoyu Wang, Junhan Xia, Chun Wang, Lu Liu, Shuxian Zhu, Wei Feng, Lidong Li
Fluorescent gold nanoclusters (AuNCs) have drawn considerable research interests owing to their unique emission properties. However, the environment surrounding the nanocluster greatly influences its luminous behavior. In this work, a novel nanocomposite based on AuNCs with bright fluorescence and high biocompatibility was prepared. In the nanocomposite, mesoporous silica (mSiO2) nanospheres provided a mesoporous framework, which helped to template the formation of ultra-small AuNCs and also prevented their aggregation in different solutions...
December 4, 2017: ACS Applied Materials & Interfaces
Elena Gazzano, Barbara Rolando, Konstantin Chegaev, Iris C Salaroglio, Joanna Kopecka, Isabella Pedrini, Simona Saponara, Matteo Sorge, Ilaria Buondonno, Barbara Stella, Alessandro Marengo, Massimo Valoti, Mara Brancaccio, Roberta Fruttero, Alberto Gasco, Silvia Arpicco, Chiara Riganti
Drug efflux transporters, in particular P-glycoprotein (Pgp), limit the success of chemotherapy. We previously found that synthetic doxorubicin conjugated with nitric oxide (NO)-releasing group overcomes resistance by inducing a NO-mediated inhibition of Pgp. Here we produced the first liposomal formulations of this nitrooxy-doxorubicin decorated with folic acid (FA), termed LNDF, in order to improve their active targeting against Pgp-expressing tumors. Folate was inserted onto liposomes surface using two different methods and the formulations were compared with respect to their technological features and in vitro behavior...
November 27, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
Marziyeh Poshteh Shirani, Behzad Rezaei, Taghi Khayamian, Mohammad Dinari, Kazem Karami, Zohreh Mehri-Lighvan, Fazileh Hosseini Shamili, Mohammd Ramezani, Mona Alibolandi
New folic acid-conjugated mesoporous silica nanoparticles were synthesized. The effect of calcination at 400°C on the fluorescence characteristics of mesoporous silica nanoparticles was studied in this work. The formed carbon dots (CDs) from calcination was used as the source of fluorescence. 3-Aminopropyltriethoxysilane was then used to amine-functionalized the fluorescent surface of mesoporous silica nanoparticles. The amine fluorescence mesoporous silica nanoparticles (amine-FMSNs) were coupled with folic acid (FA) as the target ligand (FA-amine-FMSNs)...
November 30, 2017: Journal of Biomolecular Structure & Dynamics
Massimo Mesolella, Maurizio Iengo, Domenico Testa, Filippo Ricciardiello, Brigida Iorio
Folate deficiency may be directly associated with carcinogenesis. Folate supplementation may reduce the risk of progression in a mucosa that is already genetically altered. The aim of the present study was to determine the role of folic acid in the treatment of mild and moderate laryngeal dysplasia recurring after surgery. The data obtained by laryngoscopy, measurement of serum folate levels and functional vocal assessment with the GIRBAS scale and VHI questionnaire were compared in patients who had received folic acid with a homogeneous group of patients with dysplasia who had not undergone any therapy...
November 2017: Molecular and Clinical Oncology
Nigel Fleeman, Ahmed Abdulla, Adrian Bagust, Sophie Beale, Marty Richardson, Angela Stainthorpe, Angela Boland, Eleanor Kotas, Joanne McEntee, Daniel Palmer
The National Institute for Health and Care Excellence (NICE) invited the manufacturer (Shire Pharmaceuticals) of pegylated liposomal irinotecan hydrochloride trihydrate (liposomal irinotecan) to submit clinical and cost-effectiveness evidence for its use in combination with 5-fluorouracil (5-FU) and folic acid/leucovorin (LV) for treating patients with pancreatic cancer following prior treatment with gemcitabine as part of the institute's Single Technology Appraisal process. The Liverpool Reviews and Implementation Group at the University of Liverpool was commissioned to act as the Evidence Review Group (ERG)...
November 24, 2017: PharmacoEconomics
Sona Krajcovicova, Tomas Gucky, Denisa Hendrychova, Vladimir Krystof, Miroslav Soural
Herein, we report an alternative synthetic approach for selected 2,6,9-trisubstituted purine CDK inhibitor conjugates with folic acid as a drug delivery system targeting folate receptors. In contrast to the previously reported approaches, the desired conjugates were constructed stepwise using solid-phase synthesis starting from immobilized primary amines. The ability of the prepared conjugates to release the free drug was verified using dithiothreitol (DTT) and glutathione (GSH) as liberating agents. Finally, binding to the folate receptor (FOLR1) overexpressed in a cancer cell line was measured by flow cytometry using a fluorescent imaging probe...
November 24, 2017: Journal of Organic Chemistry
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