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RANK ligand

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https://www.readbyqxmd.com/read/28727766/clinical-implications-of-the-novel-cytokine-il-38-expressed-in-lung-adenocarcinoma-possible-association-with-pd-l1-expression
#1
Kazuki Takada, Tatsuro Okamoto, Masaki Tominaga, Koji Teraishi, Takaki Akamine, Shinkichi Takamori, Masakazu Katsura, Gouji Toyokawa, Fumihiro Shoji, Masaki Okamoto, Yoshinao Oda, Tomoaki Hoshino, Yoshihiko Maehara
Interleukin (IL)-38, a novel member of the IL-1 cytokine family, is homologous to IL-1 receptor antagonist (IL-1Ra) and IL-36Ra, and has been reported to act as an antagonist. IL-38 expression is found in tonsil, placenta, and spleen, and recent studies suggest an association between IL-38 and autoimmune diseases. However, whether IL-38 plays a role in carcinogenesis or cancer growth is unclear. In the present study, we identified increases in IL-38 expression by immunohistochemistry in multiple types of cancer cells...
2017: PloS One
https://www.readbyqxmd.com/read/28712038/binding-mode-prediction-and-md-mmpbsa-based-free-energy-ranking-for-agonists-of-rev-erb%C3%AE-ncor
#2
Yvonne Westermaier, Sergio Ruiz-Carmona, Isabelle Theret, Françoise Perron-Sierra, Guillaume Poissonnet, Catherine Dacquet, Jean A Boutin, Pierre Ducrot, Xavier Barril
The knowledge of the free energy of binding of small molecules to a macromolecular target is crucial in drug design as is the ability to predict the functional consequences of binding. We highlight how a molecular dynamics (MD)-based approach can be used to predict the free energy of small molecules, and to provide priorities for the synthesis and the validation via in vitro tests. Here, we study the dynamics and energetics of the nuclear receptor REV-ERBα with its co-repressor NCoR and 35 novel agonists. Our in silico approach combines molecular docking, molecular dynamics (MD), solvent-accessible surface area (SASA) and molecular mechanics poisson boltzmann surface area (MMPBSA) calculations...
July 15, 2017: Journal of Computer-aided Molecular Design
https://www.readbyqxmd.com/read/28707576/new-strategies-for-the-prevention-and-treatment-of-systemic-and-local-bone-loss-from-pathophysiology-to-clinical-application
#3
A Fassio, Maurizio Rossini, Ombretta Viapiana, Luca Idolazzi, Camilla Benini, Elisabetta Vantaggiato, Davide Gatti
Bone loss is the result of a negative unbalance between bone formation ad bone resorption. In the last years, the studies on the Wnt canonical pathway have highlighted its crucial role in bone balance through its influence on the activity and maturation of the osteoblast line and in the Receptor Activator of Nuclear Factor κ B (RANK) - RANK ligand (RANKL)/Osteoprotegerin (OPG) system. These mechanisms are involved not only in the pathological processes inducing not only systemic bone loss (ie. Postmenopausal osteoporosis, glucocorticoid-induced osteoporosis, etc...
July 13, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28705120/qsar-docking-admet-system-pharmacology-studies-on-tormentic-acid-derivatives-for-anticancer-activity
#4
Sarfaraz Alam, Feroz Khan
To explore the anticancer compounds from tormentic acid derivatives, a quantitative structure-activity relationship (QSAR) model was developed by the multiple linear regression methods. The developed QSAR model yielded a high activity-descriptors relationship accuracy of 94% referred by regression coefficient (r(2)= 0.94) and a high activity prediction accuracy of 91%. The QSAR study indicates that chemical descriptors, chiV5, T_T_Cl_7, T_2_T_4, SsCH3count, and Epsilon3 are significantly correlated with anticancer activity...
July 14, 2017: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/28701332/circulating-rankl-and-rankl-opg-and-breast-cancer-risk-by-er-and-pr-subtype-results-from-the-epic-cohort
#5
Danja Sarink, Helena Schock, Theron Johnson, Kim Overvad, Marianne Holm, Anne Tjonneland, Marie-Christine Boutron-Ruault, Mathilde His, Marina Kvaskoff, Heiner Boeing, Pagona Lagiou, Eleni-Maria Papatesta, Antonia Trichopoulou, Domenico Palli, Valeria Pala, Amalia Mattiello, Rosario Tumino, Carlotta Sacerdote, H B As Bueno-de-Mesquita, Carla H van Gils, Petra H Peeters, Elisabete Weiderpass, Antonio Agudo, Maria-Jose Sanchez, Maria-Dolores Chirlaque, Eva Ardanaz, Pilar Amiano, Kay-Tee Khaw, Ruth C Travis, Laure Dossus, Marc J Gunter, Sabina Rinaldi, Melissa A Merritt, Elio Riboli, Rudolf Kaaks, Renee T Fortner
Receptor activator of nuclear factor kappa-B (RANK)-RANK ligand (RANKL) signaling promotes mammary tumor development in experimental models. Circulating concentrations of soluble RANKL (sRANKL) may influence breast cancer risk via activation of RANK signaling; this may be modulated by osteoprotegerin (OPG), the decoy receptor for RANKL. sRANKL and breast cancer risk by hormone receptor subtype has not previously been investigated. <p>A case-control study was nested in the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort...
July 12, 2017: Cancer Prevention Research
https://www.readbyqxmd.com/read/28700003/the-effects-of-chitosan-oligosaccharides-on-opg-and-rankl-expression-in-a-rat-osteoarthritis-model
#6
Chun Zhang, Qi Liao, Jiang-Hua Ming, Ge-Liang Hu, Qing Chen, Shi-Qing Liu, Ya-Ming Li
Purpose: To investigate the effect of chitosan oligosaccharides (COS) against osteoarthritis (OA) and preliminarily discuss the osteoprotegerin (OPG), receptor activator of NF-κB ligand (RANKL) and RANK expression in a rat OA model. Methods: Thirty-six 6-week-old Male SD rats were randomly divided into three groups: sham-operated group(CON), OA-induction group(OA), COS intervention group(n=12/group). At 4 weeks after the operation, COS (50 ul) intervention weekily for consecutive 5 weeks...
June 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28692887/electron-magnetic-resonance-data-on-high-spin-mn-iii-s-2-ions-in-porphyrinic-and-salen-complexes-modeled-by-microscopic-spin-hamiltonian-approach
#7
Krzysztof Tadyszak, Czesław Rudowicz, Hitoshi Ohta, Takahiro Sakurai
The spin Hamiltonian (SH) parameters experimentally determined by EMR (EPR) may be corroborated or otherwise using various theoretical modeling approaches. To this end semiempirical modeling is carried out for high-spin (S=2) manganese (III) 3d(4) ions in complex of tetraphenylporphyrinato manganese (III) chloride (MnTPPCl). This modeling utilizes the microscopic spin Hamiltonians (MSH) approach developed for the 3d(4) and 3d(6) ions with spin S=2 at orthorhombic and tetragonal symmetry sites in crystals, which exhibit an orbital singlet ground state...
June 28, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28689418/an-assay-based-on-samdi-mass-spectrometry-for-profiling-protein-interaction-domains
#8
Patrick T O'Kane, Milan Mrksich
This paper describes an assay that can profile the binding of a protein to ligands and can rank the affinities of a library of ligands. The method is based on the enhanced rate of an enzyme-mediated reaction that follows from colocalization of the enzyme and substrate by a protein-ligand interaction. This assay uses a self-assembled monolayer that presents a candidate peptide ligand for a receptor and a peptide substrate for an enzyme. The receptor is prepared as a fusion to the relevant enzyme so that binding of the receptor to the immobilized ligand brings the enzyme to the surface, where it can more rapidly modify its substrate...
July 21, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28682542/-effects-of-paeonol-on-the-function-of-bone-marrow-derived-macrophage-from-porphyromonas-gingivalis-induced-mice
#9
Chen Zhu, Su Lingkai
OBJECTIVE: This work aims to examine the effects of paeonol treatment on the ability of bone marrow-derived macrophage (BMM) to excrete inflammatory factors and to differentiate into osteoclasts upon induction with Porphyromonas gingivalis (P. gingivalis). This work also aims to investigate the underlying mechanisms of these abilities. METHODS: BMM culture was treated with different paeonol concentrations at for 1 h and then stimulated with P. gingivalis for 24 h before programmed death-ligand 1 (PD-L1) was quantified with flow cytometry...
April 1, 2017: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28673094/screening-of-anionic-modified-polymers-in-terms-of-stability-disintegration-and-swelling-behavior
#10
F Laffleur, M Ijaz, C Menzel
This study aimed to screen the stability, disintegration and swelling behavior of chemical modified anionic polymers. Investigated polymers were well-known and widely used staples of the pharmaceutical and medical field, namely, alginate (AL), carboxymethyl cellulose (CMC), polycarbophil (PC) and hyaluronic acid (HA). On the basis of amide bond formation between the carboxylic acid moieties of anionic polymers and the primary amino group of the modification ligand cysteine (CYS), the modified polymers were obtained...
July 4, 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/28672826/pathophysiology-of-hemophilic-arthropathy
#11
REVIEW
Daniela Melchiorre, Mirko Manetti, Marco Matucci-Cerinic
Spontaneous joint bleeding and repeated hemarthroses lead to hemophilic arthropathy-a debilitating disease with a significant negative impact on mobility and quality of life. Iron, cytokines, and angiogenic growth factors play a pivotal role in the onset of the inflammatory process that involves the synovial tissue, articular cartilage, and subchondral bone, with early damages and molecular changes determining the perpetuation of a chronic inflammatory condition. Synovitis is one of the earliest complications of hemarthrosis, and is characterized by synovial hypertrophy, migration of inflammatory cells, and a high degree of neo-angiogenesis with subsequent bleeding...
June 25, 2017: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/28667678/effects-of-photodynamic-therapy-in-periodontal-treatment-a-randomized-controlled-clinical-trial
#12
M Segarra-Vidal, S Guerra-Ojeda, L S Vallés, A López-Roldán, M D Mauricio, M Aldasoro, F Alpiste-Illueca, J M Vila
AIM: To evaluate the effects of photodynamic therapy (PDT) in the nonsurgical treatment of chronic periodontitis. MATERIALS AND METHODS: A randomized, single-blind, controlled, parallel-group clinical trial was performed. Sixty patients were enrolled: 20 healthy controls and 40 patients with periodontitis. The 40 patients were randomized for scaling and root planing (SRP) or SRP+PDT. Periodontal (plaque index, probing depth, clinical recession, clinical attachment level, bleeding on probing, and gingival crevicular fluid volume, corresponding to 381 vs 428 critical sites), microbiological (Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, Tannerella forsythia, Treponema denticola, Prevotella intermedia and Campylobacter rectus presence, 18 vs 19 samples) and biochemical (interleukin (IL)-1β, IL-6 and tumour necrosis factor (TNF)-α, receptor activator of nuclear factor-kappaB ligand (RANK-L) and osteoprotegerin (OPG) levels, 18 vs 19 samples) parameters were recorded...
July 1, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28661143/ifptarget-a-customized-virtual-target-identification-method-based-on-protein-ligand-interaction-fingerprinting-analyses
#13
Guo-Bo Li, Zhu-Jun Yu, Sha Liu, Lu-Yi Huang, Ling-Ling Yang, Christopher Thomas Lohans, Sheng-Yong Yang
Small-molecule target identification is an important and challenging task for chemical biology and drug discovery. Structure-based virtual target identification has been widely used, which infers and prioritizes potential protein targets for the molecule of interest (MOI) principally via a scoring function. However, current 'universal' scoring functions may not always accurately identify targets to which the MOI binds from the retrieved target database, in part due to a lack of consideration of the important binding features for an individual target...
June 29, 2017: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/28654262/machine-learning-consensus-scoring-improves-performance-across-targets-in-structure-based-virtual-screening
#14
Spencer S Ericksen, Haozhen Wu, Huikun Zhang, Lauren A Michael, Michael A Newton, F Michael Hoffmann, Scott A Wildman
In structure-based virtual screening, compound ranking through a consensus of scores from a variety of docking programs or scoring functions, rather than ranking by scores from a single program, provides better predictive performance and reduces target performance variability. Here we compare traditional consensus scoring methods with a novel, unsupervised gradient boosting approach. We also observed increased score variation among active ligands and developed a statistical mixture model consensus score based on combining score means and variances...
July 12, 2017: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/28643924/exosomes-novel-regulators-of-bone-remodelling-and-potential-therapeutic-agents-for-orthodontics
#15
REVIEW
L S Holliday, K P McHugh, J Zuo, J I Aguirre, J K Neubert, W J Rody
Recent studies suggest that exosomes are involved in intercellular communication required for the maintenance of healthy bone. Exosomes are small (30-150 nm in diameter) extracellular vesicles that are formed in multivesicular bodies and are released from cells as the multivesicular bodies fuse with the plasma membrane. Regulatory exosomes have the capacity to exert profound control over target cells. They can stimulate plasma membrane receptors and are also internalized by the target cell delivering proteins, lipids, small molecules and functional RNAs from the cell of origin...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28629155/repositioning-fda-drugs-as-potential-cruzain-inhibitors-from-trypanosoma-cruzi-virtual-screening-in-vitro-and-in-vivo-studies
#16
Isidro Palos, Edgar E Lara-Ramirez, Julio Cesar Lopez-Cedillo, Carlos Garcia-Perez, Muhammad Kashif, Virgilio Bocanegra-Garcia, Benjamin Nogueda-Torres, Gildardo Rivera
Chagas disease (CD) is a neglected disease caused by the parasite Trypanosoma cruzi, which affects underdeveloped countries. The current drugs of choice are nifurtimox and benznidazole, but both have severe adverse effects and less effectivity in chronic infections; therefore, the need to discover new drugs is essential. A computer-guided drug repositioning method was applied to identify potential FDA drugs (approved and withdrawn) as cruzain (Cz) inhibitors and trypanocidal effects were confirmed by in vitro and in vivo studies...
June 18, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28628309/dissecting-orthosteric-contacts-for-a-reverse-fragment-based-ligand-design
#17
Arun Chandramohan, Nikhil K Tulsian, Ganesh S Anand
Orthosteric sites on proteins are formed typically from noncontiguous interacting sites in three-dimensional space where the composite binding interaction of a biological ligand is mediated by multiple synergistic interactions of its constituent functional groups. Through these multiple interactions, ligands stabilize both the ligand binding site and the local secondary structure. However, relative energetic contributions of the individual contacts in these protein-ligand interactions are difficult to resolve...
July 14, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28627025/novel-rankl-de-loop-mutants-antagonize-rank-mediated-osteoclastogenesis
#18
Yizhou Wang, Aart H G van Assen, Carlos R Reis, Rita Setroikromo, Ronald van Merkerk, Ykelien L Boersma, Robbert H Cool, Wim J Quax
Bone is a dynamic tissue that is maintained by continuous renewal. An imbalance in bone resorption and bone formation can lead to a range of disorders, such as osteoporosis. The Receptor Activator of NF-κB (RANK)-RANK ligand (RANKL) pathway plays a major role in bone remodeling. Here, we investigated the effect of mutations at position I248 in the DE-loop of murine RANKL on the interaction of RANKL with RANK, and subsequent activation of osteoclastogenesis. Two single mutants, RANKL I248Y and I248K, were found to maintain binding and have the ability to reduce wild type RANKL-induced osteoclastogenesis...
June 19, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28626618/cytoplasmic-expression-of-c-myc-protein-is-associated-with-risk-stratification-of-mantle-cell-lymphoma
#19
Yi Gong, Xi Zhang, Rui Chen, Yan Wei, Zhongmin Zou, Xinghua Chen
AIM: To investigate the association of C-MYC protein expression and risk stratification in mantle cell lymphoma (MCL), and to evaluate the utility of C-MYC protein as a prognostic biomarker in clinical practice. METHODS: We conducted immunohistochemical staining of C-MYC, Programmed cell death ligand 1 (PD-L1), CD8, Ki-67, p53 and SRY (sex determining region Y) -11 (SOX11) to investigate their expression in 64 patients with MCL. The staining results and other clinical data were evaluated for their roles in risk stratification of MCL cases using ANOVA, Chi-square, and Spearman's Rank correlation coefficient analysis...
2017: PeerJ
https://www.readbyqxmd.com/read/28619088/chemokine-signals-are-crucial-for-enhanced-homing-and-differentiation-of-circulating-osteoclast-progenitor-cells
#20
Alan Sucur, Zrinka Jajic, Marinko Artukovic, Marina Ikic Matijasevic, Branimir Anic, Darja Flegar, Antonio Markotic, Tomislav Kelava, Sanja Ivcevic, Natasa Kovacic, Vedran Katavic, Danka Grcevic
BACKGROUND: The peripheral blood (PB) monocyte pool contains osteoclast progenitors (OCPs), which contribute to osteoresorption in inflammatory arthritides and are influenced by the cytokine and chemokine milieu. We aimed to define the importance of chemokine signals for migration and activation of OCPs in rheumatoid arthritis (RA) and psoriatic arthritis (PsA). METHODS: PB and, when applicable, synovial fluid (SF) samples were collected from 129 patients with RA, 53 patients with PsA, and 110 control patients in parallel to clinical parameters of disease activity, autoantibody levels, and applied therapy...
June 15, 2017: Arthritis Research & Therapy
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