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https://www.readbyqxmd.com/read/29345211/developing-single-entity-theranostic-drug-based-fluorescent-nanoclusters-with-augmented-cytotoxicity
#1
Bandhan Chatterjee, Asif Raza, Siddhartha Sankar Ghosh
AIM: To develop methotrexate (MTX) templated luminescent gold nanoclusters (NCs) as a single unit nanotheranostic for cancer therapy and to assess its potential as an alternative to the parent drug, for drug delivery vehicles (DDVs). METHODS: Theranostics were synthesized and extensively characterized. The stability of the theranostic and its bioimaging aptitude were evaluated. The antiproliferative propensity of the theranostic was gauged with cell viability assays and was supplemented with cytometry-based assays...
January 18, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29340056/temozolomide-encapsulated-and-folic-acid-decorated-chitosan-nanoparticles-for-lung-tumor-targeting-improving-therapeutic-efficacy-both-in-vitro-and-in-vivo
#2
Kaidi Li, Naixin Liang, Huaxia Yang, Hongsheng Liu, Shanqing Li
Folic acid-conjugated temozolomide (TMZ)-loaded chitosan nanoparticles (CS-TMZ-FLA-NP) were developed to target lung cancer in the anticipation that folic acid would increase the affinity of nanoparticles for cancer cells. CS-TMZ-FLA-NP showed the highest anti-proliferative effect on the lung cancer cells in comparison to free TMZ and CS-TMZ-NP (nanoparticles without folic acid). A cellular uptake assay was performed on two different cell lines, L132 and A549. Cellular uptake efficiencies of CS-TMZ-NP and CS-TMZ-FLA-NP were found to be concentration-dependent in both cell lines...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29339136/development-of-orally-applicable-combinatorial-drug-loaded-nanoparticles-for-the-treatment-of-fibrosarcoma
#3
Gulen Melike Demirbolat, Levent Altintas, Sukran Yilmaz, Ismail Tuncer Degim
Nanoparticulate systems have been receiving a significant attention especially for the treatment of cancer but one of the main hurdles is to produce these developed and high tech nanosystems in large quantities. Anticancer drug formulations are generally designed for parenteral administrations but oral administration is still the most convenient route. In this study, orally applicable nano-sized chitosan nanoparticles (NPs) were successfully prepared using Nano Spray Dryer. It is possible to produce these NPs in large quantities by simply increasing the processing time using the machine without changing any parameter...
January 12, 2018: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29334247/development-of-fisetin-loaded-folate-functionalized-pluronic-micelles-for-breast-cancer-targeting
#4
Atmaram Pawar, Srishti Singh, S Rajalakshmi, Karimunnisa Shaikh, C Bothiraja
The natural flavonoid fisetin (FS) has shown anticancer properties but its in-vivo administration remains challenging due to its poor aqueous solubility. The aim of the study was to develop FS loaded pluronic127 (PF)-folic acid (FA) conjugated micelles (FS-PF-FA) by the way of increasing solubility, bioavailability and active targetability of FS shall increase its therapeutic efficacy. FA-conjugated PF was prepared by carbodiimide crosslinker chemistry. FS-PF-FA micelles were prepared by thin-film hydration method and evaluated in comparison with free FS and FS loaded PF micelles (FS-PF)...
January 15, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29320411/inihibition-of-glycolysis-by-using-a-micro-nano-lipid-bromopyruvic-chitosan-carrier-as-a-promising-tool-to-improve-treatment-of-hepatocellular-carcinoma
#5
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
https://www.readbyqxmd.com/read/29313036/microfluidic-co-culture-devices-to-assess-penetration-of-nanoparticles-into-cancer-cell-mass
#6
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
https://www.readbyqxmd.com/read/29308475/tpaoh-assisted-size-tunable-gd2o3-msi-core-shell-nanostructures-for-multifunctional-biomedical-applications
#7
E Pavitra, G Seeta Rama Raju, Ganji Purnachandra Nagaraju, Goli Nagaraju, Young-Kyu Han, Yun Suk Huh, Jae Su Yu
We report a facile and large-scale synthesis of size-tunable and nontoxic mesoporous silica-coated Gd2O3:Eu3+ (Gd@mSi) core-shell nanostructures using a TPAOH assisted modified UHP technique. The role of TPAOH in controlling the particle size was evaluated. The potentiality of these Gd@mSi core-shell nanoparticles before and after folic acid conjugation was established by in vitro fluorescence microscopy of the U2OS cell lines for cancer imaging and therapy.
January 8, 2018: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/29300485/tobacco-mosaic-virus-with-peroxidase-like-activity-for-cancer-cells-detection-through-colorimetric-assay
#8
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
https://www.readbyqxmd.com/read/29300349/enhanced-and-selective-antiproliferative-activity-of-methotrexate-functionalized-nanocapsules-to-human-breast-cancer-cells-mcf-7
#9
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
https://www.readbyqxmd.com/read/29296172/folic-acid-conjugation-improves-the-bioavailability-and-chemosensitizing-efficacy-of-curcumin-encapsulated-plga-peg-nanoparticles-towards-paclitaxel-chemotherapy
#10
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
https://www.readbyqxmd.com/read/29291347/the-absence-of-albumin-improves-in-vitro-cellular-uptake-and-disruption-of-poloxamer-407-based-nanoparticles-inside-cancer-cells
#11
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
https://www.readbyqxmd.com/read/29276824/a-theranostic-nanoplatform-triple-model-imaging-guided-synergistic-cancer-therapy-based-on-liposomes-conjugated-mesoporous-silica-nanoparticles
#12
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
https://www.readbyqxmd.com/read/29258900/cellular-imaging-and-folate-receptor-targeting-delivery-of-gum-kondagogu-capped-gold-nanoparticles-in-cancer-cells
#13
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
https://www.readbyqxmd.com/read/29247686/folic-acid-modified-liposomal-drug-delivery-strategy-for-tumor-targeting-of-5-fluorouracil
#14
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
https://www.readbyqxmd.com/read/29239169/one-step-in-situ-detection-of-mirna-21-expression-in-single-cancer-cells-based-on-biofunctionalized-mos2-nanosheets
#15
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
https://www.readbyqxmd.com/read/29233015/the-benefits-of-folic-acid-modified-gold-nanoparticles-in-ct-based-molecular-imaging-radiation-dose-reduction-and-image-contrast-enhancement
#16
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
https://www.readbyqxmd.com/read/29231948/a-tailored-nanosheet-decorated-with-a-metallized-dendrimer-for-angiography-and-magnetic-resonance-imaging-guided-combined-chemotherapy
#17
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
https://www.readbyqxmd.com/read/29230291/multifunctional-cu39s28-hollow-nanopeanuts-for-in-vivo-targeted-photothermal-chemotherapy
#18
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
https://www.readbyqxmd.com/read/29220574/nanoplasmonic-alloy-of-au-ag-nanocomposites-on-paper-substrate-for-biosensing-applications
#19
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
https://www.readbyqxmd.com/read/29199424/preparation-of-novel-fluorescent-nanocomposites-based-on-au-nanoclusters-and-their-application-in-targeted-detection-of-cancer-cells
#20
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
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