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https://www.readbyqxmd.com/read/28343338/expression-of-typical-osteoclast-markers-by-pbmcs-after-peg-induced-fusion-as-a-model-for-studying-osteoclast-differentiation
#1
Luz M Castillo, Carlos A Guerrero, Orlando Acosta
Bone is a metabolically active organ subjected to continuous remodeling process that involves resorption by osteoclast and subsequent formation by osteoblasts. Osteoclast involvement in this physiological event is regulated by macrophage colony-stimulating factor (M-CSF) and receptor activator of nuclear factor κB ligand (RANKL). Fusion of mono-nuclear pre-osteoclasts is a critical event for osteoclast differentiation and for bone resorption. Here we show that PBMCs can be successfully fused with polyethylenglicol (PEG) in order to generated viable osteoclast-like cells that exhibit tartrate-resistant acid phosphatase (TRAP) and bone resorptive activities...
March 25, 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/28343256/spatiotemporal-deep-imaging-of-syncytium-induced-by-the-soybean-cyst-nematode-heterodera-glycines
#2
Mina Ohtsu, Yoshikatsu Sato, Daisuke Kurihara, Takuya Suzaki, Masayoshi Kawaguchi, Daisuke Maruyama, Tetsuya Higashiyama
Parasite infections cause dramatic anatomical and ultrastructural changes in host plants. Cyst nematodes are parasites that invade host roots and induce a specific feeding structure called a syncytium. A syncytium is a large multinucleate cell formed by cell wall dissolution-mediated cell fusion. The soybean cyst nematode (SCN), Heterodera glycines, is a major soybean pathogen. To investigate SCN infection and the syncytium structure, we established an in planta deep imaging system using a clearing solution ClearSee and two-photon excitation microscopy (2PEM)...
March 25, 2017: Protoplasma
https://www.readbyqxmd.com/read/28343102/acoustic-and-hybrid-3d-printed-electrochemical-biosensors-for-the-real-time-immunodetection-of-liver-cancer-cells-hepg2
#3
Samar Damiati, Seta Küpcü, Martin Peacock, Christoph Eilenberger, Mazin Zamzami, Ishtiaq Qadri, Hani Choudhry, Uwe B Sleytr, Bernhard Schuster
This study presents an efficient acoustic and hybrid three-dimensional (3D)-printed electrochemical biosensors for the detection of liver cancer cells. The biosensors function by recognizing the highly expressed tumor marker CD133, which is located on the surface of liver cancer cells. Detection was achieved by recrystallizing a recombinant S-layer fusion protein (rSbpA/ZZ) on the surface of the sensors. The fused ZZ-domain enables immobilization of the anti-CD133 antibody in a defined manner. These highly accessible anti-CD133 antibodies were employed as a sensing layer, thereby enabling the efficient detection of liver cancer cells (HepG2)...
March 21, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28343064/a-barley-homolog-of-yeast-atg6-is-involved-in-multiple-abiotic-stress-responses-and-stress-resistance-regulation
#4
Xiaowei Zeng, Zhanghui Zeng, Cuicui Liu, Weiyi Yuan, Ning Hou, Hongwu Bian, Muyuan Zhu, Ning Han
Autophagy is a highly conserved degradation pathway among eukaryote cells, which can recycle damaged or unwanted cell materials upon encountering stress conditions. As a key component of the Class III PI3K kinase complex, ATG6/Beclin-1 is essential for autophagosome formation. In this study, we isolated a putative HvATG6 gene in barley genome. The protein encoded by HvATG6 shares high sequence identity to ATG6 orthologs in rice and wheat, and has a typical autophagy-specific domain containing segments of repeated β-sheet-α-helix...
March 19, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28342877/quantitative-visualization-of-synchronized-insulin-secretion-from-3d-cultured-cells
#5
Takahiro Suzuki, Takao Kanamori, Satoshi Inouye
Quantitative visualization of synchronized insulin secretion was performed in an isolated rat pancreatic islet and a spheroid of rat pancreatic beta cell line using a method of video-rate bioluminescence imaging. Video-rate images of insulin secretion from 3D-cultured cells were obtained by expressing the fusion protein of insulin and Gaussia luciferase (Insulin-GLase). A subclonal rat INS-1E cell line stably expressing Insulin-GLase, named iGL, was established and a cluster of iGL cells showed oscillatory insulin secretion that was completely synchronized in response to high glucose...
March 22, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28342334/oncogene-addiction-in-non-small-cell-lung-cancer-focus-on-ros1-inhibition
#6
REVIEW
Francesco Facchinetti, Giulio Rossi, Emilio Bria, Jean-Charles Soria, Benjamin Besse, Roberta Minari, Luc Friboulet, Marcello Tiseo
Detection of molecular aberrations driving the biology and the clinical behavior of advanced non-small cell lung cancer (NSCLC) allows the adoption of specific therapeutic strategies dramatically impacting disease courses. Among these, ROS1 rearrangements are present in 1-2% of lung adenocarcinomas. Thanks to similarities between ALK and ROS1 oncogenes, lessons inferred from ALK can be applied to ROS1-positive NSCLC; nevertheless, disparities exist between diseases mastered by these two fusion genes. In the absence of more common genetic alterations detected in NSCLC (e...
March 12, 2017: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/28340410/development-of-fusogenic-glass-surfaces-that-impart-spatiotemporal-control-over-macrophage-fusion-direct-visualization-of-multinucleated-giant-cell-formation
#7
James J Faust, Wayne Christenson, Kyle Doudrick, Robert Ros, Tatiana P Ugarova
Implantation of synthetic material, including vascular grafts, pacemakers, etc. results in the foreign body reaction and the formation of multinucleated giant cells (MGCs) at the exterior surface of the implant. Despite the long-standing premise that fusion of mononucleated macrophages results in the formation of MGCs, to date, no published study has shown fusion in context with living specimens. This is due to the fact that optical-quality glass, which is required for the majority of live imaging techniques, does not promote macrophage fusion...
March 2, 2017: Biomaterials
https://www.readbyqxmd.com/read/28339499/evaluation-of-fusion-protein-cleavage-site-sequences-of-newcastle-disease-virus-in-genotype-matched-vaccines
#8
Shin-Hee Kim, Zongyan Chen, Asuka Yoshida, Anandan Paldurai, Sa Xiao, Siba K Samal
Newcastle disease virus (NDV) causes a devastating poultry disease worldwide. Frequent outbreaks of NDV in chickens vaccinated with conventional live vaccines suggest a need to develop new vaccines that are genetically matched against circulating NDV strains, such as the genotype V virulent strains currently circulating in Mexico and Central America. In this study, a reverse genetics system was developed for the virulent NDV strain Mexico/01/10 strain and used to generate highly attenuated vaccine candidates by individually modifying the cleavage site sequence of fusion (F) protein...
2017: PloS One
https://www.readbyqxmd.com/read/28339051/protective-effects-of-tacrolimus-on-podocytes-in-early-diabetic-nephropathy-in-rats
#9
Tao Peng, Xiangdi Chang, Jie Wang, Junhui Zhen, Xiangdong Yang, Zhao Hu
The aim of the present study was to investigate the protective effect of tacrolimus on early podocyte damage in rats with diabetic nephropathy (DN). A total of 38 normal male Sprague‑Dawley rats were randomly divided into four groups: Normal control group (group N; n=8), DN group (n=10), tacrolimus (FK506) treatment group (group F; n=10), benazepril (Lotensin) treatment group (group L; n=10). The rats in groups DN, F and L were administered with streptozotocin (STZ; 60 mg/kg) by intraperitoneal injection to establish the diabetic rat model...
March 22, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28338950/non-replicative-rna-recombination-of-an-animal-plus-strand-rna-virus-in-the-absence-of-efficient-translation-of-viral-proteins
#10
Maximiliane Kleine Büning, Denise Meyer, Sophia Austermann-Busch, Gleyder Roman-Sosa, Tillmann Rümenapf, Paul Becher
RNA recombination is a major driving force for the evolution of RNA viruses and is significantly implicated in the adaptation of viruses to new hosts, changes of virulence, as well as in the emergence of new viruses including drug-resistant and escape mutants. However, the molecular details of recombination in animal RNA viruses are only poorly understood. In order to determine whether viral RNA recombination depends on translation of viral proteins, a non-replicative recombination system was established which is based on cotransfection of cells with synthetic bovine viral diarrhea virus (family Flaviviridae) RNA genome fragments either lacking the internal ribosome entry site required for cap-independent translation or lacking almost the complete polyprotein coding region...
March 11, 2017: Genome Biology and Evolution
https://www.readbyqxmd.com/read/28338736/microcompartmentation-of-cytosolic-aldolase-by-interaction-with-the-actin-cytoskeleton-in-arabidopsis
#11
Constantine Garagounis, Kalliopi-Ioanna Kostaki, Tim J Hawkins, Ian Cummins, Mark D Fricker, Patrick J Hussey, Alistair M Hetherington, Lee J Sweetlove
Evidence is accumulating for molecular microcompartments formed when proteins interact in localized domains with the cytoskeleton, organelle surfaces, and intracellular membranes. To understand the potential functional significance of protein microcompartmentation in plants, we studied the interaction of the glycolytic enzyme fructose bisphosphate aldolase with actin in Arabidopsis thaliana. Homology modelling of a major cytosolic isozyme of aldolase, FBA8, suggested that the tetrameric holoenzyme has two actin binding sites and could therefore act as an actin-bundling protein, as was reported for animal aldolases...
February 17, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28338654/tfeb-vegfa-6p21-1-co-amplified-renal-cell-carcinoma-a-distinct-entity-with-potential-implications-for-clinical-management
#12
Sounak Gupta, Sarah H Johnson, George Vasmatzis, Binu Porath, Jeannette G Rustin, Priya Rao, Brian A Costello, Bradley C Leibovich, R Houston Thompson, John C Cheville, William R Sukov
A subset of renal cell carcinomas shows TFEB overexpression secondary to MALAT1-TFEB gene fusion. As alternate mechanisms of TFEB overexpression are likely to have the same effect, we sought to determine the frequency of amplification of TFEB and the adjacent VEGFA gene at 6p21.1. As patients with metastatic renal cell carcinomas are managed with anti-VEGF therapies, we retrospectively assessed therapeutic response in patients with amplified tumors. Amplification status was analyzed for 875 renal cell carcinomas from our institution, a consultative case and 794 cases from The Cancer Genome Atlas...
March 24, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28338290/identification-of-natural-inhibitors-of-bcr-abl-for-the-treatment-of-chronic-myeloid-leukemia
#13
Phani Krishna, Sailu Sarvagalla, Bindu Madhuri, Sankar Pajaniradje, Vinitha Baskaran, Mohane Selvaraj Coumar, R Baskaran
Chronic myeloid leukemia (CML) is a clonal myeloproliferative disorder of the hematopoietic stem cells, characterized at the molecular level by the bcr/abl gene rearrangement. Even though targeting the fusion gene product Bcr-Abl protein is a successful strategy, development of drug resistance and drug intolerance are currently the limitations for Bcr-Abl targeted CML therapy. With an aim to develop natural Bcr-Abl inhibitors, we performed virtual screening (VS) of ZINC natural compound database by docking with Abl kinase using Glide software...
March 24, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28338193/oncogenic-mir-155-down-regulated-upon-activation-of-antitumor-cytotoxic-t-lymphocytes-by-the-fusion-of-dendritic-cells-with-breast-carcinoma-cells
#14
J Zhang, Y Li
OBJECTIVE: MicroRNAs has been proved to play vital roles in many biological processes. In the present study, the expression profile of oncogenic miR-155 in the activated antitumor cytotoxic T lymphocytes generated by the fusion of dendritic cells with breast carcinoma cells has been demonstrated. MATERIALS AND METHODS: Expression profile of oncogenic miR-155 was noted in antitumor cytotoxic T lymphocytes, which was generated by the fusion of dendritic cells (DC) with breast carcinoma cells (MCF-7)...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28338015/simultaneously-measuring-multiple-protein-interactions-and-their-correlations-in-a-cell-by-protein-interactome-footprinting
#15
Si-Wei Luo, Zhi Liang, Jia-Rui Wu
Quantitatively detecting correlations of multiple protein-protein interactions (PPIs) in vivo is a big challenge. Here we introduce a novel method, termed Protein-interactome Footprinting (PiF), to simultaneously measure multiple PPIs in one cell. The principle of PiF is that each target physical PPI in the interactome is simultaneously transcoded into a specific DNA sequence based on dimerization of the target proteins fused with DNA-binding domains. The interaction intensity of each target protein is quantified as the copy number of the specific DNA sequences bound by each fusion protein dimers...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28337642/the-small-heat-shock-proteins-%C3%AE-b-crystallin-hspb5-and-hsp27-hspb1-inhibit-the-intracellular-aggregation-of-%C3%AE-synuclein
#16
Dezerae Cox, Heath Ecroyd
Protein homeostasis, or proteostasis, is the process of maintaining the conformational and functional integrity of the proteome. Proteostasis is preserved in the face of stress by a complex network of cellular machinery, including the small heat shock molecular chaperone proteins (sHsps), which act to inhibit the aggregation and deposition of misfolded protein intermediates. Despite this, the pathogenesis of several neurodegenerative diseases has been inextricably linked with the amyloid fibrillar aggregation and deposition of α-synuclein (α-syn)...
March 23, 2017: Cell Stress & Chaperones
https://www.readbyqxmd.com/read/28336315/cardiolipin-and-mitochondrial-cristae-organization
#17
REVIEW
Nikita Ikon, Robert O Ryan
A fundamental question in cell biology, under investigation for over six decades, is the structural organization of mitochondrial cristae. Long known to harbor electron transport chain proteins, crista membrane integrity is key to establishment of the proton gradient that drives oxidative phosphorylation. Visualization of cristae morphology by electron microscopy / tomography has provided evidence that cristae are tube-like extensions of the mitochondrial inner membrane (IM) that project into the matrix space...
March 20, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28336073/visualization-of-the-genomic-loci-that-are-bound-by-specific-multiprotein-complexes-by-bimolecular-fluorescence-complementation-analysis-on-drosophila-polytene-chromosomes
#18
Huai Deng, Tom K Kerppola
We have developed a procedure that enables visualization of the genomic loci that are bound by complexes formed by a specific combination of chromatin-binding proteins. This procedure is based on imaging bimolecular fluorescence complementation (BiFC) complexes on Drosophila polytene chromosomes. BiFC complexes are formed by the facilitated association of two fluorescent protein fragments that are fused to proteins that interact with, or are in close proximity to, each other. The intensity of BiFC complex fluorescence at individual genomic loci is greatly enhanced by the parallel alignment of hundreds of chromatids within the polytene chromosomes...
2017: Methods in Enzymology
https://www.readbyqxmd.com/read/28335432/marine-lectins-dlfbl-and-hddsbl-fused-with-soluble-coxsackie-adenovirus-receptor-facilitate-adenovirus-infection-in-cancer-cells-but-have-different-effects-on-cell-survival
#19
Bingbing Wu, Shengsheng Mei, Lianzhen Cui, Zhenzhen Zhao, Jianhong Chen, Tao Wu, Gongchu Li
Cancer development and progression are usually associated with glycosylation change, providing prognostic and diagnostic biomarkers, as well as therapeutic targets, for various cancers. In this work, Dicentrarchus labrax fucose binding lectin (DlFBL) and Haliotis discus discus sialic acid binding lectin (HddSBL) were genetically fused with soluble coxsackie-adenovirus receptor (sCAR), and produced through a bacterial expression system. Results showed that recombinant sCAR-DlFBL not only facilitated adenovirus Ad-EGFP infection in K562/ADR and U87MG cells, but also enhanced the cytotoxicity of adenovirus harboring gene encoding Pinellia pedatisecta agglutinin (PPA) or DlFBL (Ad-PPA or Ad-DlFBL) on U87MG cells through inducing apoptosis...
March 14, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28334780/eif4a3-deficient-human-ipscs-and-mouse-models-demonstrate-neural-crest-defects-that-underlie-richieri-costa-pereira-syndrome
#20
Emily E Miller, Gerson S Kobayashi, Camila M Musso, Miranda Allen, Felipe A A Ishiy, Luiz C de Caires Junior, Ernesto S G Guimarães, Karina Griesi-Oliveira, Roseli M Zechi-Ceide, Antonio Richieri-Costa, Debora R Bertola, Maria Rita Passos-Bueno, Debra L Silver
Biallelic loss-of-function mutations in the RNA binding protein EIF4A3 cause Richieri-Costa-Pereira syndrome (RCPS), an autosomal recessive condition mainly characterized by craniofacial and limb malformations. However, the pathogenic cellular mechanisms responsible for this syndrome are entirely unknown. Here we used two complementary approaches, patient-derived induced pluripotent stem cells (iPSCs) and conditional Eif4a3 mouse models, to demonstrate that defective Neural Crest Cell (NCC) development explains RCPS craniofacial abnormalities...
March 2, 2017: Human Molecular Genetics
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