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https://www.readbyqxmd.com/read/28210267/mir-30-family-potentially-targeting-pi3k-siah2-predicted-interaction-network-represents-a-novel-putative-theranostic-panel-in-non-small-cell-lung-cancer
#1
Lawrence W C Chan, Fengfeng Wang, Fei Meng, Lili Wang, Sze Chuen Cesar Wong, Joseph S K Au, Sijun Yang, William C S Cho
Non-small cell lung cancer (NSCLC) comprises about 84% of all lung cancers. Many treatment options are available but the survival rate is still very low due to drug resistance. It has been found that phosphoinositide-3-kinase (PI3K) affects sensitivity to tyrosine kinase inhibitors (TKIs), including gefitinib and erlotinib. Expression level of seven in absentia homolog 2 (SIAH2), an E3 ubiquitin-protein ligase, is upregulated in NSCLC and correlated with tumor grade. However, the relationship between PI3K and SIAH2 remains unclear and therefore it is not known whether they can act as treatment co-targets and theranostic dual markers for overcoming TKI resistance...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28209527/exploring-deformable-particles-in-vascular-targeted-drug-delivery-softer-is-only-sometimes-better
#2
Margaret B Fish, Catherine A Fromen, Genesis Lopez-Cazares, Alexander W Golinski, Timothy F Scott, Reheman Adili, Michael Holinstat, Omolola Eniola-Adefeso
The ability of vascular-targeted drug carriers (VTCs) to localize and bind to a targeted, diseased endothelium determines their overall clinical utility. Here, we investigate how particle modulus and size determine adhesion of VTCs to the vascular wall under physiological blood flow conditions. In general, deformable microparticles (MPs) outperformed nanoparticles (NPs) in all experimental conditions tested. Our results indicate that MP modulus enhances particle adhesion in a shear-dependent manner. In low shear human blood flow profiles in vitro, low modulus particles showed favorable adhesion, while at high shear, rigid particles showed superior adhesion...
February 4, 2017: Biomaterials
https://www.readbyqxmd.com/read/28209060/the-use-of-spectroscopic-techniques-for-evaluating-the-coupling-of-porphyrins-on-biocompatible-nanoparticles-a-potential-system-for-photodynamics-theranostics-and-nano-drug-delivery-applications
#3
Lais N Magno, Fabio C Bezerra, Luiz E S Freire, Rubens A Guerra, Andris Figueiroa Bakuzis, Pablo Jose Goncalves
Modern medicine has been searching for new and more efficient strategies for diagnostics and therapeutics applications. Considering this, porphyrin molecules have received great interest for applications in photodiagnostics and phototherapies, even as magnetic nanoparticles for drug-delivery systems and magnetic-hyperthermia therapy. Aiming to obtain a multifunctional system, which combines diagnostics with therapeutic functions on the same platform, the present study employed UV/Vis absorption and fluorescence spectroscopies to evaluated the interaction between meso-tetrakis(p-sulfonatofenyl) porphyrin (TPPS) and maghemite nanoparticles (γ-Fe2O3)...
February 16, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28208698/advances-in-molecular-imaging-of-locally-delivered-targeted-therapeutics-for-central-nervous-system-tumors
#4
REVIEW
Umberto Tosi, Christopher S Marnell, Raymond Chang, William C Cho, Richard Ting, Uday B Maachani, Mark M Souweidane
Thanks to the recent advances in the development of chemotherapeutics, the morbidity and mortality of many cancers has decreased significantly. However, compared to oncology in general, the field of neuro-oncology has lagged behind. While new molecularly targeted chemotherapeutics have emerged, the impermeability of the blood-brain barrier (BBB) renders systemic delivery of these clinical agents suboptimal. To circumvent the BBB, novel routes of administration are being applied in the clinic, ranging from intra-arterial infusion and direct infusion into the target tissue (convection enhanced delivery (CED)) to the use of focused ultrasound to temporarily disrupt the BBB...
February 8, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28205399/synthesis-characterization-and-relaxation-studies-of-gd-do3a-conjugate-of-chlorambucil-as-a-potential-theranostic-agent
#5
Jasleen Kaur, Yoanna Tsvetkova, Karim Arroub, Sabri Sahnoun, Fabian Kiessling, Sanjay Mathur
DO3A-based macrocycles serve as attractive templates from which clinically useful theranostic agents can be obtained after coupling with molecular targeted therapeutic drugs. In this study, we describe the chemical synthesis, relaxation, and cytotoxicity studies of a new DO3A conjugate of chlorambucil (CHL) as a magnetic resonance imaging (MRI) theranostic agent. A convenient route of synthesis is reported, which allowed conjugation of the macrocyclic ligand (DO3A) to the chemotherapeutic drug (CHL) via tyrosine for the preparation of an attractive chelate-drug ensemble (DO3A-TR-CHL)...
February 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28198587/hexaphyrin-as-a-potential-theranostic-dye-for-photothermal-therapy-and-19f-magnetic-resonance-imaging
#6
Tomohiro Higashino, Hirotaka Nakatsuji, Ryosuke Fukuda, Haruki Okamoto, Hirohiko Imai, Tetsuya Matsuda, Hidehito Tochio, Masahiro Shirakawa, Nikolai Tkachenko, Mitsuru Hashida, Tatsuya Murakami, Hiroshi Imahori
meso-Aryl substituted expanded porphyrins have two potential key features suitable for theranostic agents, excellent absorption in near infrared (NIR) region and possible introduction of multiple fluorine atoms at structurally nearly equivalent positions. Herein, hexaphyrin (hexa) was synthesized using 2,6-bis(trifluoromethyl)-4-formyl benzoate and pyrrole and evaluated as a novel theranostic expanded porphyrin possessing the above key features. Under NIR light illumination hexa showed intense photothermal and weak photodynamic effects, which were most likely due to its low-lying excited states close to a singlet oxygen...
February 15, 2017: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/28197764/new-frontiers-in-prostate-cancer-imaging-clinical-utility-of-prostate-specific-membrane-antigen-positron-emission-tomography
#7
REVIEW
Asim Afaq, Deepak Batura, Jamshed Bomanji
Prostate-specific membrane antigen positron emission tomography (PSMA PET) is a relatively new method of imaging prostate cancer that increases diagnostic accuracy in detecting and guiding management in various stages of the disease pathway. Gallium-68-labelled PSMA PET has increased the sensitivity of detection of disease recurrence at low PSA levels, thus allowing an optimal window for salvage treatment. Apart from its use in disease recurrence, PSMA PET has the potential for increasing sensitivity and specificity for primary tumour localisation and in detecting lymph node disease, leading to a more accurate initial staging of the condition...
February 14, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28195515/targeting-cell-adhesion-molecules-with-nanoparticles-using-in%C3%A2-vivo-and-flow-based-in%C3%A2-vitro-models-of-atherosclerosis
#8
Khosrow Khodabandehlou, Jacqueline J Masehi-Lano, Christopher Poon, Jonathan Wang, Eun Ji Chung
Atherosclerosis is a leading cause of death worldwide; in addition to lipid dysfunction, chronic arterial wall inflammation is a key component of atherosclerosis. Techniques that target cell adhesion molecules, which are overexpressed during inflammation, are effective methods to detect and treat atherosclerosis. Specifically, research groups have identified vascular cell adhesion molecule-1, intercellular adhesion molecule-1, platelet endothelial cell adhesion molecule, and selectins (E-selectin and P-selectin) as correlated to atherogenesis...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28195446/host-materials-transformable-in-tumor-microenvironment-for-homing-theranostics
#9
Pei-Pei Yang, Qiang Luo, Guo-Bin Qi, Yu-Juan Gao, Bing-Nan Li, Jing-Ping Zhang, Lei Wang, Hao Wang
A pathology-adaptive nanosystem, in which nest-like hosts are built based on nanofibers that are transformed from i.v. injected nanoparticles under acidic tumor microenvironment. The solid tumor is artificially modified by nest-like hosts readily and firmly, resulting in highly efficient accumulation and stabilization of guest theranostics. This strategy shows great potential for the theranostics delivery to tumors.
February 13, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28192978/in-vitro-functional-quality-characterization-of-nota-modified-somatropins
#10
Nathalie Bracke, Han Yao, Evelien Wynendaele, Frederick Verbeke, Xiaolong Xu, Bert Gevaert, Alex Maes, Christophe Van de Wiele, Mike Sathekge, Sarah De Saeger, Bart M J De Spiegeleer
Chemical modifications on protein biopharmaceuticals introduce extra variability in addition to their inherent complexity, hence require more comprehensive analytical and functional characterization during their discovery, development and manufacturing. Somatropin (i.e. recombinant human growth hormone, rhGH) modified with the chelating agent S-2-(4-isothiocyanatobenzyl)-1,4,7-triazacyclononane-1,4,7-triacetic acid (p-SCN-Bn-NOTA) allows the incorporation of radiometals for research and possible theranostic purposes...
January 31, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28192937/amplification-and-quantification-of-an-antisense-oligonucleotide-from-target-microrna-using-programmable-dna-and-a-biological-nanopore
#11
Moe Hiratani, Masayuki Ohara, Ryuji Kawano
This paper describes a strategy for autonomous diagnoses of cancers using microRNA (miRNA) and therapy for tumor cells by DNA computing techniques and nanopore measurement. Theranostics, which involves the combination of diagnosis and therapy, has emerged as an approach for personalized medicine or point-of-care cancer diagnostics. DNA computing will become a potent tool for theranostics because it functions completely autonomously without the need for external regulations. However, conventional theranostics using DNA computing involves a one-to-one reaction in which a single input molecule generates a single output molecule; the concentration of the antisense drug is insufficient for the therapy in this type of reaction...
February 9, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28192714/design-and-synthesis-of-temperature-responsive-polymer-silica-hybrid-nanoparticles-and-application-to-thermally-controlled-cellular-uptake
#12
Yuki Hiruta, Ryo Nemoto, Hideko Kanazawa
This study reports the development of temperature-responsive polymer/silica hybrid nanoparticles and their application to temperature-dependent intracellular uptake of hydrophobic encapsulated fluorescence molecules. Amphiphilic diblock copolymer comprising a temperature-responsive segment, poly(N-isopropylacrylamide-co-N,N-dimethylacrylamide) [P(NIPAAm-co-DMAAm)] and a trimethyoxysilyl-containing hydrophobic segment was synthesized (PBM-b-ND); this amphiphilic diblock copolymer self-assembled in an aqueous solution, and temperature-responsive polymer/silica hybrid fluorescence nanoparticles were fabricated via a base-catalyzed sol-gel process...
February 4, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28192672/smart-nanostructures-for-cargo-delivery-uncaging-and-activating-by-light
#13
Mahdi Karimi, Parham Sahandi Zangabad, Soodeh Baghaee-Ravari, Mahdi Ghazizadeh, Hamed Mirshekari, Michael R Hamblin
Nanotechnology has begun to play a remarkable role in various fields of science and technology. In biomedical applications, nanoparticles have opened new horizons, especially for biosensing, targeted delivery of therapeutics, etc. Among drug delivery systems (DDSs), smart nanocarriers that can respond to specific stimuli in their local environment represent a growing field. Nanoplatforms that can be activated by an external application of light, can be used for a wide variety of photo-activated therapies, (especially light-triggered DDSs) relying on photo-isomerization, photo-crosslinking/uncrosslinking, photo-reduction, etc...
February 13, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28191563/dendritic-poly-chelator-frameworks-for-multimeric-bioconjugation
#14
Dominik Reich, Alexander Wurzer, Martina Wirtz, Veronika Stiegler, Philipp Spatz, Julia Pollmann, Hans-Jürgen Wester, Johannes Notni
Starting from multifunctional triazacyclononane-triphosphinate chelator cores, dendritic molecules with the ability to bind metal ions within their framework were synthesized. A cooperative interaction of the chelator cages resulted in a markedly increased affinity towards (67/68)Ga(III). A hexameric PSMA inhibitor conjugate with high affinity (IC50 = 1.2 nM) and favorable in vivo PET imaging properties demonstrated practical applicability. The novel scaffolds are useful for synthesis of structurally well-defined multimodal imaging probes or theranostics...
February 13, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28191450/remotely-triggered-nano-theranostics-for-cancer-applications
#15
Alexandra Sneider, Derek VanDyke, Shailee Paliwal, Prakash Rai
Nanotechnology has enabled the development of smart theranostic platforms that can concurrently diagnose disease, start primary treatment, monitor response, and, if required, initiate secondary treatments. Recent in vivo experiments demonstrate the promise of using theranostics in the clinic. In this paper, we review the use of remotely triggered theranostic nanoparticles for cancer applications, focusing heavily on advances in the past five years. Remote triggering mechanisms covered include photodynamic, photothermal, phototriggered chemotherapeutic release, ultrasound, electro-thermal, magneto-thermal, X-ray, and radiofrequency therapies...
2017: Nanotheranostics (Syd)
https://www.readbyqxmd.com/read/28187534/retraction-note-rituximab-conjugated-doxorubicin-loaded-microbubbles-as-a-theranostic-modality-in-b-cell-lymphoma
#16
https://www.readbyqxmd.com/read/28186438/a-semiautomated-microfluidic-platform-for-real-time-investigation-of-nanoparticles-cellular-uptake-and-cancer-cells-tracking
#17
Mariana R Carvalho, F Raquel Maia, Joana Silva-Correia, Bruno M Costa, Rui L Reis, Joaquim M Oliveira
AIM: Develop a platform composed of labeled dendrimer nanoparticles (NPs) and a microfluidic device for real-time monitoring of cancer cells fate. MATERIALS & METHODS: Carboxymethylchitosan/poly(amidoamine) dendrimer NPs were labeled with fluorescein-5(6)-isothiocyanate and characterized using different physicochemical techniques. After, HeLa, HCT-116 and U87MG were cultured in the presence of NPs, and cell viability and internalization efficiency in static (standard culture) and dynamic (microfluidic culture) conditions were investigated...
February 10, 2017: Nanomedicine
https://www.readbyqxmd.com/read/28186370/ternary-chalcogenide-nanosheets-with-ultrahigh-photothermal-conversion-efficiency-for-photoacoustic-theranostics
#18
Houjuan Zhu, Zhuangchai Lai, Yuan Fang, Xu Zhen, Chaoliang Tan, Xiaoying Qi, Dan Ding, Peng Chen, Hua Zhang, Kanyi Pu
2D materials (TDMs) have been explored for photonic theranostics. To achieve deep-tissue penetration, near-infrared (NIR) light is essential for photoacoustic (PA) theranostics. However, because the absorption profiles of existing TDMs are generally featureless with no obvious NIR absorption peaks, their PA signals and therapeutic efficacies are limited. This paper herein reports the synthesis and application of ternary chalcogenide nanosheets (Ta2 NiS5 -P) for PA theranostics. In contrast to the current TDMs for such application, Ta2 NiS5 -P has a ternary instead of binary composition...
February 10, 2017: Small
https://www.readbyqxmd.com/read/28186214/monodisperse-phase-transfer-and-surface-bioengineering-of-metal-nanoparticles-via-a-silk-fibroin-protein-corona
#19
Xiao-Wei Huang, Hong Liang, Zhi Li, Jie Zhou, Xian Chen, Shu-Meng Bai, Huang-Hao Yang
Uniform hydrophobic nanoparticles synthesized in nonpolar solvents possess excellent physio-chemical properties, showing great potential in biomedical applications. However, the presence of hydrophobic ligands on their surfaces limits their use under physiological conditions. Inspired by protein coronas present at the nano-bio interface, here we report a facile and universal method for phase transfer and surface bioengineering of hydrophobic nanoparticles using β-sheet-rich silk fibroin, a FDA-approved natural protein...
February 10, 2017: Nanoscale
https://www.readbyqxmd.com/read/28178901/cellular-interaction-influenced-by-surface-modification-strategies-of-gelatin-based-nanoparticles
#20
Wai Hei Tse, Laszlo Gyenis, David W Litchfield, Jin Zhang
Theranostic applications of gelatin nanospheres require two major components, a method of detection and good biocompatibility. We characterized the response of UTA-6 human osteosarcoma cells to the introduction of functionalized 90 bloom-based gelatin nanospheres (158 ± 49 nm) modified with three elements in different order: (a) hybridization with cadmium-based quantum dots for optical detection, (b) bioconjugation with anti-human IgG FAB (anti-IgG) for cell targeting, with/without (c) capping with polyethylene glycol on the surface for enhanced biocompatibility...
February 2017: Journal of Biomaterials Applications
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