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https://www.readbyqxmd.com/read/28531794/binding-of-the-anticancer-drug-bi-2536-to-human-serum-albumin-a-spectroscopic-and-theoretical-study
#1
Jesús Fernández-Sainz, Pedro J Pacheco-Liñán, José M Granadino-Roldán, Iván Bravo, Andrés Garzón, Jaime Rubio-Martínez, José Albaladejo
BI-2536 is a potent Polo-like kinase inhibitor which induces apoptosis in diverse human cancer cell lines. The binding affinity of BI-2536 for human serum albumin (HSA) protein may define its pharmacokinetic and pharmacodynamic profile. We have studied the binding of BI-2536 to HSA by means of different spectroscopic techniques and docking calculations. We have experimentally observed that the affinity of BI-2536 for HSA is higher than that of other common HSA binding drugs. Therefore, it can be postulated that the drug dose should be increased to achieve a certain concentration of free drug in plasma, although BI-2536 could also reach tumour tissues by uptaking HSA/BI-2536 complex...
May 12, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28525646/sleep-during-menopausal-transition-a-six-year-follow-up
#2
Laura Lampio, Päivi Polo-Kantola, Sari-Leena Himanen, Samu Kurki, Eero Huupponen, Janne Engblom, Olli J Heinonen, Olli Polo, Tarja Saaresranta
Study Objectives: Menopausal transition is associated with increased dissatisfaction with sleep, but the effects on sleep architecture are conflicting. This prospective six-year follow-up study was designed to evaluate the changes in sleep stages and sleep continuity that occur in women during menopausal transition. Methods: Sixty women (mean age 46.0 years, SD 0.9) participated. All women were premenopausal at baseline, and at the six-year follow-up, women were in different stages of menopausal transition...
May 19, 2017: Sleep
https://www.readbyqxmd.com/read/28524194/chiral-supramolecular-organization-from-a-sheet-like-achiral-gel-a-study-of-chiral-photoinduction
#3
Jorge Royes, Víctor Polo, Santiago Uriel, Luis Oriol, Milagros Piñol, Rosa M Tejedor
Chiral photoinduction in a photoresponsive gel based on an achiral 2D architecture with high geometric anisotropy and low roughness has been investigated. Circularly polarized light (CPL) was used as a chiral source and an azobenzene chromophore was employed as a chiral trigger. The chiral photoinduction was studied by evaluating the preferential excitation of enantiomeric conformers of the azobenzene units. Crystallographic data and density functional theory (DFT) calculations show how chirality is transferred to the achiral azomaterials as a result of the combination of chiral photochemistry and supramolecular interactions...
May 19, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28523289/core-canonical-pathways-involved-in-developing-human-glioblastoma-multiforme-gbm
#4
Somiranjan Ghosh, Sisir Dutta, Gabriel Thorne, Ava Boston, Alexis Barfield, Narendra Banerjee, Rayshawn Walker, Hirendra Nath Banerjee
Glioblastoma multiforme (GBM) is the most common and aggressive type of the primary brain tumors with pathologic hallmarks of necrosis and vascular proliferation. The diagnosis of GBM is currently mostly based on histological examination of brain tumor tissues, after radiological characterization and surgical biopsy. The ability to characterize tumors comprehensively at the molecular level raises the possibility that diagnosis can be made based on molecular profiling with or without histological examination, rather than solely on histological phenotype...
February 2017: Int J Sci Res Sci Eng Technol
https://www.readbyqxmd.com/read/28521657/several-inhibitors-of-the-plk1-polo-box-domain-turn-out-to-be-non-specific-protein-alkylators
#5
Vincent Archambault, Karine Normandin
For almost a decade, there has been much interest in the development of chemical inhibitors of Polo-like kinase 1 (Plk1) protein interactions. Plk1 is a master regulator of the cell division cycle that controls numerous substrates. It is a promising target for cancer drug development. Inhibitors of the kinase domain of Plk1 had some success in clinical trials. However, they are not perfectly selective. In principle, Plk1 can also be inhibited by interfering with its protein interaction domain, the Polo-Box Domain (PBD)...
May 19, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28515325/mutual-regulation-between-polo-like-kinase-3-and-siah2-e3-ubiquitin-ligase-defines-a-regulatory-network-that-fine-tunes-the-cellular-response-to-hypoxia-and-nickel
#6
Cen Li, Soyoung Park, Xiaowen Zhang, Wei Dai, Dazhong Xu
Elevated cellular response to hypoxia, which contributes to cell transformation and tumor progression, is a prominent feature of malignant cells in solid tumors. Polo-like kinase 3 (Plk3) is a serine/threonine protein kinase known to inhibit the cellular response to hypoxia and tumorigenesis. Nickel compounds are well established human carcinogens that induce tumorigenesis partly through their hypoxia-mimicking effects. Despite the previous research efforts, the role of Plk3 in the hypoxic response induced by hypoxia or nickel is not completely understood...
May 17, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28511616/bayesian-meta-analysis-the-role-of-the-between-sample-heterogeneity
#7
Elías Moreno, Francisco-José Vázquez-Polo, Miguel A Negrín
The random effect approach for meta-analysis was motivated by a lack of consistent assessment of homogeneity of treatment effect before pooling. The random effect model assumes that the distribution of the treatment effect is fully heterogenous across the experiments. However, other models arising by grouping some of the experiments are plausible. We illustrate on simulated binary experiments that the fully heterogenous model gives a poor meta-inference when fully heterogeneity is not the true model and that the knowledge of the true cluster model considerably improves the inference...
January 1, 2017: Statistical Methods in Medical Research
https://www.readbyqxmd.com/read/28511108/wine-yeasts-identification-by-maldi-tof-ms-optimization-of-the-preanalytical-steps-and-development-of-an-extensible-open-source-platform-for-processing-and-analysis-of-an-in-house-ms-database
#8
Cristina Gutiérrez, M Ángeles Gómez-Flechoso, Ignacio Belda, Javier Ruiz, Nour Kayali, Luis Polo, Antonio Santos
Saccharomyces cerevisiae is the most important yeast species for the production of wine and other beverages. In addition, nowadays, researchers and winemakers are aware of the influence of non-Saccharomyces in wine aroma complexity. Due to the high microbial diversity associated to several agro-food processes, such as winemaking, developing fast and accurate methods for microbial identification is demanded. In this context, MALDI-TOF MS mass fingerprint provides reliable tool for fast biotyping and classification of microorganisms...
May 8, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28510576/comparison-of-peripapillary-choroidal-thickness-between-healthy-subjects-and-patients-with-parkinson-s-disease
#9
Elena Garcia-Martin, Luis E Pablo, Maria P Bambo, Raquel Alarcia, Vicente Polo, Jose M Larrosa, Elisa Vilades, Beatriz Cameo, Elvira Orduna, Teresa Ramirez, Maria Satue
PURPOSE: To study peripapillary choroidal thickness (PPCT) in healthy subjects using swept-source optical coherence tomography (SS-OCT), and to evaluate PPCT differences between Parkinson´s disease (PD) patients, and age- and sex-matched healthy controls. DESIGN: Case-control study. METHODS: 80 healthy subjects and 40 PD patients were consecutively recruited in this single institution study. The healthy subjects were divided into two populations: a teaching population (n = 40, used to establish choroidal zones) and a validating population (n = 40, used to compare measurements with PD patients)...
2017: PloS One
https://www.readbyqxmd.com/read/28507699/polylysine-grafted-au144-nanoclusters-birth-and-growth-of-a-healthy-surface-plasmon-resonance-like-band
#10
Ivan Guryanov, Federico Polo, Evgeniy V Ubyvovk, Evgenia Korzhikova-Vlakh, Tatiana Tennikova, Armin T Rad, Mu-Ping Nieh, Flavio Maran
Poly(amino acid)-coated gold nanoparticles hold promise in biomedical applications, particularly because they combine the unique physicochemical properties of the gold core, excellent biocompatibility, and easy functionalization of the poly(amino acid)-capping shell. Here we report a novel method for the preparation of robust hybrid core-shell nanosystems consisting of a Au144 cluster and a densely grafted polylysine layer. Linear polylysine chains were grown by direct N-carboxyanhydride (NCA) polymerization onto ligands capping the gold nanocluster...
April 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/28504248/the-flavonoid-tl-2-8-induces-cell-death-and-immature-mitophagy-in-breast-cancer-cells-via-abrogating-the-function-of-the-aha1-hsp90-complex
#11
Hui-Juan Liu, Xiao-Xiao Jiang, Yi-Zhen Guo, Fang-Hui Sun, Xin-Hui Kou, Yong Bao, Zhu-Qing Zhang, Zhao-Hu Lin, Ting-Bo Ding, Lan Jiang, Xin-Sheng Lei, Yong-Hua Yang
The flavonoid quercetin exhibits significant anticancer activities with few side effects. In the current study, we characterized TL-2-8, a quercetin derivative, as a novel anticancer agent in vitro and in vivo. Cell proliferation and viability were assessed using Cell Counting Kit-8 and CellTiter-Blue assay, respectively. Cell death was examined using PI staining or a TUNEL assay. Mitophagy was determined by measuring autophagic flux and by confocal imaging. Protein expression was examined by Western blotting...
May 1, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28499276/augmented-expression-of-polo-like-kinase-1-indicates-poor-clinical-outcome-for-breast-patients-a-systematic-review-and-meta-analysis
#12
REVIEW
Zhang Yunfeng, Wu Zhibin, Liu Dapeng, Wang Meng, Xiao Guodong, Wang Peili, Sun Xin, Ren Hong, Tang Shou-Ching, Du Ning
Polo-like kinases 1 (PLK1), a key regulator of mitosis, plays an essential role in maintaining genomic stability. Up-regulation of PLK1 was found in tumorigenesis and tumor progression of diverse cancers. However, the clinicopathological and prognostic implications of PLK1 in breast cancer (BC) have yet to be unveiled. Therefore, using PubMed, Web of Science, Embase, and Chinese databases, we conducted a meta-analysis to define the potential clinical value of PLK1 in BC. Eleven eligible articles with 2481 patients enrolled were included in the present meta-analysis, of which eight studies reported on the relationship between PLK1 expression and clinicopathological features, and nine studies provided survival data in BC patients...
April 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28498710/charge-induced-force-noise-on-free-falling-test-masses-results-from-lisa-pathfinder
#13
M Armano, H Audley, G Auger, J T Baird, P Binetruy, M Born, D Bortoluzzi, N Brandt, A Bursi, M Caleno, A Cavalleri, A Cesarini, M Cruise, K Danzmann, M de Deus Silva, I Diepholz, R Dolesi, N Dunbar, L Ferraioli, V Ferroni, E D Fitzsimons, R Flatscher, M Freschi, J Gallegos, C García Marirrodriga, R Gerndt, L Gesa, F Gibert, D Giardini, R Giusteri, C Grimani, J Grzymisch, I Harrison, G Heinzel, M Hewitson, D Hollington, M Hueller, J Huesler, H Inchauspé, O Jennrich, P Jetzer, B Johlander, N Karnesis, B Kaune, C J Killow, N Korsakova, I Lloro, L Liu, J P López-Zaragoza, R Maarschalkerweerd, S Madden, D Mance, V Martín, L Martin-Polo, J Martino, F Martin-Porqueras, I Mateos, P W McNamara, J Mendes, L Mendes, A Moroni, M Nofrarias, S Paczkowski, M Perreur-Lloyd, A Petiteau, P Pivato, E Plagnol, P Prat, U Ragnit, J Ramos-Castro, J Reiche, J A Romera Perez, D I Robertson, H Rozemeijer, F Rivas, G Russano, P Sarra, A Schleicher, J Slutsky, C Sopuerta, T J Sumner, D Texier, J I Thorpe, C Trenkel, D Vetrugno, S Vitale, G Wanner, H Ward, P J Wass, D Wealthy, W J Weber, A Wittchen, C Zanoni, T Ziegler, P Zweifel
We report on electrostatic measurements made on board the European Space Agency mission LISA Pathfinder. Detailed measurements of the charge-induced electrostatic forces exerted on free-falling test masses (TMs) inside the capacitive gravitational reference sensor are the first made in a relevant environment for a space-based gravitational wave detector. Employing a combination of charge control and electric-field compensation, we show that the level of charge-induced acceleration noise on a single TM can be maintained at a level close to 1...
April 28, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28497540/meikin-associated-polo-like-kinase-specifies-bub1-distribution-in-meiosis-i
#14
Seira Miyazaki, Jihye Kim, Yuya Yamagishi, Tadashi Ishiguro, Yuki Okada, Yuji Tanno, Takeshi Sakuno, Yoshinori Watanabe
In meiosis I, sister chromatids are captured by microtubules emanating from the same pole (mono-orientation), and centromeric cohesion is protected throughout anaphase. Shugoshin, which is localized to centromeres depending on the phosphorylation of histone H2A by Bub1 kinase, plays a central role in protecting meiotic cohesin Rec8 from separase cleavage. Another key meiotic kinetochore factor, meikin, may regulate cohesion protection, although the underlying molecular mechanisms remain elusive. Here, we show that fission yeast Moa1 (meikin), which associates stably with CENP-C during meiosis I, recruits Plo1 (polo-like kinase) to the kinetochores and phosphorylates Spc7 (KNL1) to accumulate Bub1...
May 12, 2017: Genes to Cells: Devoted to Molecular & Cellular Mechanisms
https://www.readbyqxmd.com/read/28497458/ocular-surface-disease-in-patients-under-topical-treatment-for-glaucoma
#15
Francisco Pérez-Bartolomé, Jose M Martínez-de-la-Casa, Pedro Arriola-Villalobos, Cristina Fernández-Pérez, Vicente Polo, Julián García-Feijoó
PURPOSE: To examine the relationship between ocular surface disease (OSD) and topical antiglaucoma therapy. METHODS: A total of 211 eyes of 211 patients with open-angle glaucoma or ocular hypertension on topical medication were recruited over 10 months. Controls were 51 eyes of 51 healthy age- and sex-matched volunteers. In each patient, we recorded the intraocular pressure-lowering eyedrops used, the number of medications used, and daily and cumulative preservative concentrations (PC)...
May 10, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28495747/reticulon-3-dependent-er-pm-contact-sites-control-egfr-nonclathrin-endocytosis
#16
Giusi Caldieri, Elisa Barbieri, Gilda Nappo, Andrea Raimondi, Massimo Bonora, Alexia Conte, Lisette G G C Verhoef, Stefano Confalonieri, Maria Grazia Malabarba, Fabrizio Bianchi, Alessandro Cuomo, Tiziana Bonaldi, Emanuele Martini, Davide Mazza, Paolo Pinton, Carlo Tacchetti, Simona Polo, Pier Paolo Di Fiore, Sara Sigismund
The integration of endocytic routes is critical to regulate receptor signaling. A nonclathrin endocytic (NCE) pathway of the epidermal growth factor receptor (EGFR) is activated at high ligand concentrations and targets receptors to degradation, attenuating signaling. Here we performed an unbiased molecular characterization of EGFR-NCE. We identified NCE-specific regulators, including the endoplasmic reticulum (ER)-resident protein reticulon 3 (RTN3) and a specific cargo, CD147. RTN3 was critical for EGFR/CD147-NCE, promoting the creation of plasma membrane (PM)-ER contact sites that were required for the formation and/or maturation of NCE invaginations...
May 12, 2017: Science
https://www.readbyqxmd.com/read/28490974/the-introduction-of-biosimilars-of-low-molecular-weight-heparins-in-europe-a-critical-review-and-reappraisal-endorsed-by-the-italian-society-for-haemostasis-and-thrombosis-siset-and-the-italian-society-for-angiology-and-vascular-medicine-siapav
#17
REVIEW
Davide Imberti, Marco Marietta, Hernan Polo Friz, Claudio Cimminiello
Recently, the European Medicines Agency (EMA) authorized the introduction and marketing of Thorinane® and Inhixa®, biosimilars of the Low Molecular Weight Heparin (LMWH) enoxaparin. The authorization path is considerably different from the guidelines published by the EMA in 2009, as well as from the recommendations from the International Society on Thrombosis and Haemostasis published in 2013. Indeed, both of them recommended that LMWHs biosimilars therapeutic equivalence should be demonstrated in at least one adequately designed clinical trial...
2017: Thrombosis Journal
https://www.readbyqxmd.com/read/28474730/three-dimensional-kinematics-of-the-equine-metacarpophalangeal-joint-using-x-ray-reconstruction-of-moving-morphology-a-pilot-study
#18
Bronwen A Childs, Brenna R Pugliese, Cristina T Carballo, Daniel L Miranda, Elizabeth L Brainerd, Carl A Kirker-Head
X-ray reconstruction of moving morphology (XROMM) uses biplanar videoradiography and computed tomography (CT) scanning to capture three-dimensional (3D) bone motion. In XROMM, morphologically accurate 3D bone models derived from CT are animated with motion from videoradiography, yielding a highly accurate and precise reconstruction of skeletal kinematics. We employ this motion analysis technique to characterize metacarpophalangeal joint (MCPJ) motion in the absence and presence of protective legwear in a healthy pony...
May 5, 2017: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/28472807/clinical-features-and-treatment-outcome-of-malignant-pleural-mesothelioma
#19
Manlio Mencoboni, Rosa A Filiberti, Paola Taveggia, Federica Grosso, Giulia Pasello, Lisette Del Corso, Alberto Muzio, Valentina Polo, Paolo Zucali, Giovanni L Ceresoli, Hector J Soto Parra, Laura Auriati, Claudio Simonassi
No abstract text is available yet for this article.
May 9, 2017: Oncology Research and Treatment
https://www.readbyqxmd.com/read/28471164/correlation-between-charge-recombination-and-lateral-hole-hopping-kinetics-in-a-series-of-cis-ru-phen-dcb-ncs-2-dye-sensitized-solar-cells
#20
Renato N Sampaio, Andressa V Müller, André S Polo, Gerald J Meyer
Four complexes of the general form cis-Ru(phen')(dcb)(NCS)2, where dcb is 4,4'-(CO2H)2-2,2'-bipyridine and phen' is 1,10-phenanthroline (phen), 4,7-(C6H5)2-phen (Ph2-phen), 4,7-(CH3)2-phen (Me2-phen), or 3,4,7,8-(CH3)4-phen (Me4-phen), were anchored to mesoporous TiO2 thin films for applications as sensitizers in dye-sensitized solar cells (DSSCs). The compounds displayed metal based reductions E(o)(Ru(III/II)) = 1.01 ± 0.05 V vs NHE and were potent reductants competent of excited-state electron transfer to TiO2 with yields ϕinj ≥ 0...
May 4, 2017: ACS Applied Materials & Interfaces
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