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Post-loaded nanoparticle

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https://www.readbyqxmd.com/read/29745729/anti-proliferate-and-apoptosis-triggering-potential-of-methotrexate-transferrin-conjugate-encapsulated-plga-nanoparticles-with-enhanced-cellular-uptake-by-high-affinity-folate-receptors
#1
Ankush Parmar, Atul Jain, Shivani Uppal, S K Mehta, Khuswinder Kaur, Bhupinder Singh, Rajat Sandhir, Shweta Sharma
The objective of the present study is to enhance the permeation of bioactive molecules across highly lipophilic insurmountable blood brain barrier (BBB) using folic acid (FA) functionalized poly(lactic-co-glycolic acid) (PLGA) nanoparticles (FA-PNPs) coated with non-ionic surfactant, Polysorbate 80 (P80 ). The developed Mtx-Tf loaded folic acid anchored PNPs formulation depicted particle size, zeta potential and entrapment efficiency of 109 ± 2.3 nm, -9.38 ± 0.9 mV and 71.0 ± 0.6%, respectively...
May 10, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29729897/injectable-magnetic-supramolecular-hydrogel-with-magnetocaloric-liquid-conformal-property-prevents-the-post-operative-recurrence-in-a-breast-cancer-model
#2
Haoan Wu, Lina Song, Ling Chen, Wei Zhang, Yi Chen, Fengchao Zang, Hong Chen, Ming Ma, Ning Gu, Yu Zhang
Locoregional recurrence of breast cancer after tumor resection represents several clinical challenges. Here, we demonstrate that co-delivery of chemotherapy and thermotherapeutic agents by a magnetic supramolecular hydrogel (MSH) following tumor resection prevents tumor recurrence in a breast cancer mouse model. The self-assembled MSH was designed through the partial inclusion complexation associated with the threading of α-CD on the copolymer moieties on the surface of the PEGylated iron oxide (Fe3 O4 ) nanoparticles, which enables shear-thinning injection and controllable thermoreversible gel-sol transition...
May 3, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29721078/localized-delivery-of-curcumin-into-brain-with-polysorbate-80-modified-cerasomes-by-ultrasound-targeted-microbubble-destruction-for-improved-parkinson-s-disease-therapy
#3
Nisi Zhang, Fei Yan, Xiaolong Liang, Manxiang Wu, Yuanyuan Shen, Min Chen, Yunxue Xu, Guangyang Zou, Peng Jiang, Caiyun Tang, Hairong Zheng, Zhifei Dai
Rationale: Treatment for Parkinson's disease (PD) is challenged by the presence of the blood-brain barrier (BBB) that significantly limits the effective drug concentration in a patient's brain for therapeutic response throughout various stages of PD. Curcumin holds the potential for α-synuclein clearance to treat PD; however, its applications are still limited due to its low bioavailability and poor permeability through the BBB in a free form. Methods: Herein, this paper fabricated curcumin-loaded polysorbate 80-modified cerasome (CPC) nanoparticles (NPs) with a mean diameter of ~110 nm for enhancing the localized curcumin delivery into the targeted brain nuclei via effective BBB opening in combination with ultrasound-targeted microbubble destruction (UTMD)...
2018: Theranostics
https://www.readbyqxmd.com/read/29675269/translation-of-remote-control-regenerative-technologies-for-bone-repair
#4
Hareklea Markides, Jane S McLaren, Neil D Telling, Noura Alom, E'atelaf A Al-Mutheffer, Richard O C Oreffo, Andrew Zannettino, Brigitte E Scammell, Lisa J White, Alicia J El Haj
The role of biomechanical stimuli, or mechanotransduction, in normal bone homeostasis and repair is understood to facilitate effective osteogenesis of mesenchymal stem cells (MSCs) in vitro. Mechanotransduction has been integrated into a multitude of in vitro bone tissue engineering strategies and provides an effective means of controlling cell behaviour towards therapeutic outcomes. However, the delivery of mechanical stimuli to exogenous MSC populations, post implantation, poses a significant translational hurdle...
2018: NPJ Regenerative Medicine
https://www.readbyqxmd.com/read/29593406/curcuminoid-loaded-poly-methyl-methacrylate-nanoparticles-for-cancer-therapy
#5
Abhispa Sahu, Pratima Solanki, Susmita Mitra
Curcuminoids (Curs), oleoresins from Curcuma longa L., have known anticarcinogenic and anti-inflammatory properties, but high toxicity, poor aqueous solubility and susceptibility to degradation in body fluids are deterrents to their clinical administration. Poly(methyl methacrylate) nanoparticles (PMMA-NPs) are biocompatible and resilient and can entrap hydrophobic drugs. The present investigation is related to solubilizing Curs by incorporating them in these nanoparticles (NPs) and is related to a study comparing the anticarcinogenic effect of drug-loaded NPs with free Cur using lung cancer (A549) cell line...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29584947/metal-nanoparticles-embedded-in-cellulose-nanocrystal-based-films-material-properties-and-post-use-analysis
#6
Erlantz Lizundia, Uribarri Goikuria, Jose Luis Vilas, Francesco Cristofaro, Giovanna Bruni, Elena Fortunati, Ilaria Armentano, Livia Visai, Luigi Torre
The dispersion of nanoparticles having different size-, shape-, and composition-dependent properties is an exciting approach to design and synthetize multifunctional materials and devices. This work shows a detailed investigation of the preparation and properties of free-standing nanocomposite films based on cellulose nanocrystals (CNC) loaded with three different types of metal nanoparticles. CNC-based nanocomposites having zinc oxide (ZnO), titanium dioxide (TiO2) and silver oxide (Ag2O) have been obtained through evaporation-induced self-assembly (EISA) in acqueos solution...
March 27, 2018: Biomacromolecules
https://www.readbyqxmd.com/read/29533842/ph-driven-precipitation-of-quisinostat-onto-pla-peg-nanoparticles-enables-treatment-of-intracranial-glioblastoma
#7
Kyle T Householder, Danielle M DiPerna, Eugene P Chung, Anne Rosa Luning, Duong T Nguyen, Sarah E Stabenfeldt, Shwetal Mehta, Rachael W Sirianni
Histone deacetylases (HDACs) are known to be key enzymes in cancer development and progression through their modulation of chromatin structure and the expression and post-translational modification of numerous proteins. Aggressive dedifferentiated tumors, like glioblastoma, frequently overexpress HDACs, while HDAC inhibition can lead to cell cycle arrest, promote cellular differentiation and induce apoptosis. Although multiple HDAC inhibitors, such as quisinostat, are of interest in oncology due to their potent in vitro efficacy, their failure in the clinic as monotherapies against solid tumors has been attributed to poor delivery...
June 1, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29530814/curcumin-loaded-nanoparticles-ameliorate-glial-activation-and-improve-myelin-repair-in-lyolecithin-induced-focal-demyelination-model-of-rat-corpus-callosum
#8
Reza Naeimi, Fatemeh Safarpour, Mona Hashemian, Hamed Tashakorian, Seyed Raheleh Ahmadian, Manouchehr Ashrafpour, Maryam Ghasemi-Kasman
Curcumin has been introduced as effective anti-inflammatory agent in treatment of several inflammatory disorders. Despite the wide range pharmacological activities, clinical application of curcumin is restricted mainly due to the low water solubility of this substance. More recently, we could remarkably improve the aqueous solubility of curcumin by its encapsulation in chitosan-alginate-sodium tripolyphosphate nanoparticles (CS-ALG-STPP NPs). In this study, the anti-inflammatory and myelin protective effects of curcumin-loaded NPs were evaluated in lysolecithin (LPC)-induced focal demyelination model...
May 1, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29515946/nanoparticle-delivery-to-metastatic-breast-cancer-cells-by-nanoengineered-mesenchymal-stem-cells
#9
Liga Saulite, Karlis Pleiko, Ineta Popena, Dominyka Dapkute, Ricardas Rotomskis, Una Riekstina
We created a 3D cell co-culture model by combining nanoengineered mesenchymal stem cells (MSCs) with the metastatic breast cancer cell line MDA-MD-231 and primary breast cancer cell line MCF7 to explore the transfer of quantum dots (QDs) to cancer cells. First, the optimal conditions for high-content QD loading in MSCs were established. Then, QD uptake in breast cancer cells was assessed after 24 h in a 3D co-culture with nanoengineered MSCs. We found that incubation of MSCs with QDs in a serum-free medium provided the best accumulation results...
2018: Beilstein Journal of Nanotechnology
https://www.readbyqxmd.com/read/29494665/microrna-124-loaded-nanoparticles-increase-survival-and-neuronal-differentiation-of-neural-stem-cells-in-vitro-but-do-not-contribute-to-stroke-outcome-in-vivo
#10
Cláudia Saraiva, Daniela Talhada, Akhilesh Rai, Raquel Ferreira, Lino Ferreira, Liliana Bernardino, Karsten Ruscher
There is a high quest for novel therapeutic strategies to enhance recovery after stroke. MicroRNA-124 (miR-124) has been described as neuroprotective and anti-inflammatory molecule. Moreover, miR-124 is a well described enhancer of adult neurogenesis that could offer potentially beneficial effects. Herein, we used miR-124-loaded nanoparticles (miR-124 NPs) to evaluate their therapeutic potential in an in vitro and in vivo model of stroke. For that, neuroprotective and neurogenic responses were assessed in an in vitro model of stroke...
2018: PloS One
https://www.readbyqxmd.com/read/29438105/magnetic-resonance-and-photoacoustic-imaging-of-brain-tumor-mediated-by-mesenchymal-stem-cell-labeled-with-multifunctional-nanoparticle-introduced-via-carotid-artery-injection
#11
Yang Qiao, Joy Gumin, Christopher J MacLellan, Feng Gao, Richard Bouchard, Frederick F Lang, R Jason Stafford, Marites P Melancon
OBJECTIVE: To evaluate the feasibility of visualizing bone marrow-derived human mesenchymal stem cells (MSCs) labeled with a gold-coated magnetic resonance (MR)-active multifunctional nanoparticle and injected via the carotid artery for assessing the extent of MSC homing in glioma-bearing mice. MATERIALS AND METHODS: Nanoparticles containing superparamagnetic iron oxide coated with gold (SPIO@Au) with a diameter of ∼82 nm and maximum absorbance in the near infrared region were synthesized...
April 20, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29360110/size-control-and-fluorescence-labeling-of-polydopamine-melanin-mimetic-nanoparticles-for-intracellular-imaging
#12
Devang R Amin, Caroline Sugnaux, King Hang Aaron Lau, Phillip B Messersmith
As synthetic analogs of the natural pigment melanin, polydopamine nanoparticles (NPs) are under active investigation as non-toxic anticancer photothermal agents and as free radical scavenging therapeutics. By analogy to the widely adopted polydopamine coatings, polydopamine NPs offer the potential for facile aqueous synthesis and incorporation of (bio)functional groups under mild temperature and pH conditions. However, clear procedures for the convenient and reproducible control of critical NP properties such as particle diameter, surface charge, and loading with functional molecules have yet to be established...
September 2017: Biomimetics
https://www.readbyqxmd.com/read/29343624/inhalation-of-peptide-loaded-nanoparticles-improves-heart-failure
#13
Michele Miragoli, Paola Ceriotti, Michele Iafisco, Marco Vacchiano, Nicolò Salvarani, Alessio Alogna, Pierluigi Carullo, Gloria Belén Ramirez-Rodríguez, Tatiana Patrício, Lorenzo Degli Esposti, Francesca Rossi, Francesca Ravanetti, Silvana Pinelli, Rossella Alinovi, Marco Erreni, Stefano Rossi, Gianluigi Condorelli, Heiner Post, Anna Tampieri, Daniele Catalucci
Peptides are highly selective and efficacious for the treatment of cardiovascular and other diseases. However, it is currently not possible to administer peptides for cardiac-targeting therapy via a noninvasive procedure, thus representing scientific and technological challenges. We demonstrate that inhalation of small (<50 nm in diameter) biocompatible and biodegradable calcium phosphate nanoparticles (CaPs) allows for rapid translocation of CaPs from the pulmonary tree to the bloodstream and to the myocardium, where their cargo is quickly released...
January 17, 2018: Science Translational Medicine
https://www.readbyqxmd.com/read/29339187/doxorubicin-loaded-dendritic-fe-3-o-4-supramolecular-nanoparticles-for-magnetic-drug-targeting-and-tumor-regression-in-spheroid-murine-melanoma-model
#14
Saumya Nigam, D Bahadur
This work evaluates the magnetically-guided delivery of DOX-loaded dendritic-Fe3 O4 nanoparticles and their tumor regression efficacy in subcutaneous melanoma in C57BL/6 mice. The hematological, biochemical and histopathological parameters were minimally affected. The nanoparticles localized in lungs, liver and spleen suggesting non-specific uptake. However, in tumor-bearing mice, substantially higher localization in magnetically-targeted tumor was observed when compared to passive localization in non-targeted tumor...
April 2018: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/29336463/protein-corona-in-drug-delivery-for-multimodal-cancer-therapy-in-vivo
#15
Eugenia Li Ling Yeo, Patricia Soo Ping Thong, Khee Chee Soo, James Chen Yong Kah
The protein corona is inevitably formed on nanoparticles (NPs) when they are introduced in vivo and has been associated with a reduction in targeting yield, immune recognition and rapid blood clearance, leading to poor tumor accumulation. We have recently shown that it is possible to exploit the protein corona for drug delivery by exploiting it for loading and triggering the release of a photosensitizer Chlorin e6 (Ce6) for simultaneous photodynamic (PDT) and photothermal therapy (PTT) in vitro. Here, we extended our previous in vitro studies to evaluate its effectiveness in vivo...
February 1, 2018: Nanoscale
https://www.readbyqxmd.com/read/29334396/towards-the-continuous-production-of-pt-based-heterogeneous-catalysts-using-microfluidic-systems
#16
Uson Laura, Manuel Arruebo, Victor Sebastian
The continuous production of Pt-based heterogeneous catalysts based on ultra-small (<2 nm) noble metal nanoparticles deposited on mesoporous ordered silica and their catalytic activity in VOC abatement are here reported. Microfluidic reactors can be used not only to enable the fast and controlled production of ultra-small Pt nanoparticles (NPs), but also alloyed NPs including PtPd, PtRu and PtRh can be formed in short residence times (between 60 s and 5 min). A novel continuous and homogeneous loading of these catalytic NPs on SBA-15 used as a mesoporous support is also here reported...
January 30, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29191047/stealth-lipid-polymer-hybrid-nanoparticles-loaded-with-rutin-for-effective-brain-delivery-comparative-study-with-the-gold-standard-tween-80-optimization-characterization-and-biodistribution
#17
Rania A H Ishak, Nada M Mostafa, Amany O Kamel
The blood-brain barrier is considered the leading physiological obstacle hindering the transport of neurotherapeutics to brain cells. The application of nanotechnology coupled with surfactant coating is one of the efficacious tactics overcoming this barrier. The aim of this study was to develop lipid polymer hybrid nanoparticles (LPHNPs), composed of a polymeric core and a phospholipid shell entangled, for the first time, with PEG-based surfactants (SAA) viz. TPGS or Solutol HS 15 in comparison with the gold standard Tween 80, aiming to enhance brain delivery and escape opsonization...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/29179133/improved-heart-repair-upon-myocardial-infarction-combination-of-magnetic-nanoparticles-and-tailored-magnets-strongly-increases-engraftment-of-myocytes
#18
Annika Ottersbach, Olga Mykhaylyk, Alexandra Heidsieck, Dietmar Eberbeck, Sarah Rieck, Katrin Zimmermann, Martin Breitbach, Britta Engelbrecht, Tobias Brügmann, Michael Hesse, Armin Welz, Philipp Sasse, Daniela Wenzel, Christian Plank, Bernhard Gleich, Michael Hölzel, Wilhelm Bloch, Alexander Pfeifer, Bernd K Fleischmann, Wilhelm Roell
Cell replacement in the heart is considered a promising strategy for the treatment of post-infarct heart failure. Direct intramyocardial injection of cells proved to be the most effective application route, however, engraftment rates are very low (<5%) strongly hampering its efficacy. Herein we combine magnetic nanoparticle (MNP) loading of EGFP labeled embryonic cardiomyocytes (eCM) and embryonic stem cell-derived cardiomyocytes (ES-CM) with application of custom designed magnets to enhance their short and long-term engraftment...
February 2018: Biomaterials
https://www.readbyqxmd.com/read/29174440/immunochemotherapy-mediated-by-thermosponge-nanoparticles-for-synergistic-anti-tumor-effects
#19
Yongdan Zhao, Qingle Song, Yijia Yin, Tingting Wu, Xiaomeng Hu, Xueqin Gao, Gao Li, Songwei Tan, Zhiping Zhang
The efficacy of immunotherapy was demonstrated to be compromised by reduced immunogenicity of tumor cells and enhanced suppressive properties of the tumor microenvironment in cancer treatment. There is growing evidence that low-dose chemotherapy can modulate the immune system to improve the anti-tumor effects of immunotherapy through multiple mechanisms, including the enhancement of tumor immunogenicity and reversal of the immunosuppressive tumor microenvironment. Here, we fabricated thermosponge nanoparticles (TSNs) for the co-delivery of chemotherapeutic drug paclitaxel (PTX) and immunostimulant interleukin-2 (IL-2) to explore the synergistic anti-tumor effects of chemotherapy and immunotherapy...
January 10, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29166707/-establishment-of-myocardial-targeted-nanoparticles-and-preliminary-evaluation-of-its-effects-on-prevention-and-treatment-of-myocardial-injury
#20
Y Y Liu, C Wang, P F Luo, Z F Xia
Objective: To establish 3-{4-[2-hydroxyl-(1-methylethylamino) propoxy] phenyl} propionic acid cetylesters (PAC) modified nanoparticles, and preliminarily explore its cardiomyocyte-targeting function and protection effects on myocardium. Methods: (1) HL-1 myocardial cells were divided into cyanidin-3 (Cy3) marked non-targeted small interference RNA (Cy3-siNC) group and Cy3 marked small interference RNA designed for the nuclear factor kappa B (NF-κB)-p65 gene (Cy3-si435) group according to the random number table, with 3 wells in each group...
November 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
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