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https://www.readbyqxmd.com/read/27911943/enhanced-in-planta-fitness-through-adaptive-mutations-in-efpr-a-dual-regulator-of-virulence-and-metabolic-functions-in-the-plant-pathogen-ralstonia-solanacearum
#1
Anthony Perrier, Rémi Peyraud, David Rengel, Xavier Barlet, Emmanuel Lucasson, Jérôme Gouzy, Nemo Peeters, Stéphane Genin, Alice Guidot
Experimental evolution of the plant pathogen Ralstonia solanacearum, where bacteria were maintained on plant lineages for more than 300 generations, revealed that several independent single mutations in the efpR gene from populations propagated on beans were associated with fitness gain on bean. In the present work, novel allelic efpR variants were isolated from populations propagated on other plant species, thus suggesting that mutations in efpR were not solely associated to a fitness gain on bean, but also on additional hosts...
December 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27903798/lubac-modulates-lmp1-activation-of-nf%C3%AE%C2%BAb-and-irf7
#2
Ling Wang, Yujia Wang, Juan Zhao, Junping Ren, Kenton H Hall, Jonathan P Moorman, Zhi Q Yao, Shunbin Ning
: Recently, Linear Ubiquitin Assembly Complex (LUBAC)-mediated linear ubiquitination has come into focus due to its emerging role in activation of NFκB in different biological contexts. However, the role of LUBAC in LMP1 signaling leading to NFκB and IRF7 activation has not been investigated. We have shown here that RNF31, the key component of LUBAC complex, interacts with LMP1 and IRF7 in EBV-transformed cells, and that LUBAC stimualtes linear ubiquitination of NEMO and IRF7. Consequently, LUBAC is required for LMP1 signaling to full activation of NFκB, but inhibits LMP1-stimulated IRF7 transcriptional activity...
November 30, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27903773/nlk-mediated-phosphorylation-of-hdac1-negatively-regulates-wnt-signaling
#3
Katarzyna Chmielarska Masoumi, Renée Daams, Wondossen Sime, Valentina Siino, Hengning Ke, Fredrik Levander, Ramin Massoumi
The Wnt signaling pathway is essential in regulating various cellular processes. Different mechanisms of inhibition for Wnt signaling have been proposed. Besides β-catenin degradation, through the proteasome, nemo-like kinase (NLK) is another molecule that is known to negatively regulate Wnt signaling. However, the mechanism by which NLK mediates the inhibition of Wnt signaling is not yet known. In the present study, we used primary embryonic fibroblast cells isolated from NLK-deficient mice and showed that these cells proliferate faster and have a shorter cell cycle compared with wild-type cells...
November 30, 2016: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/27895463/lentivirus-mediated-knockdown-of-nlk-inhibits-small-cell-lung-cancer-growth-and-metastasis
#4
Mutian Lv, Yaming Li, Xin Tian, Shundong Dai, Jing Sun, Guojiang Jin, Shenyi Jiang
Nemo-like kinase (NLK), an evolutionarily conserved serine/threonine kinase, has been recognized as a critical regulator of various cancers. In this study, we investigated the role of NLK in human small-cell lung cancer (SCLC), which is the most aggressive form of lung cancer. NLK expression was evaluated by quantitative real-time polymerase chain reaction in 20 paired fresh SCLC tissue samples and found to be noticeably elevated in tumor tissues. Lentivirus-mediated RNAi efficiently suppressed NLK expression in NCI-H446 cells, resulting in a significant reduction in cell viability and proliferation in vitro...
2016: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/27893701/the-signaling-adaptor-traf1-negatively-regulates-toll-like-receptor-signaling-and-this-underlies-its-role-in-rheumatic-disease
#5
Ali A Abdul-Sater, Maria I Edilova, Derek L Clouthier, Achire Mbanwi, Elisabeth Kremmer, Tania H Watts
TRAF1 is a signaling adaptor known for its role in tumor necrosis factor receptor-induced cell survival. Here we show that monocytes from healthy human subjects with a rheumatoid arthritis-associated single-nucleotide polymorphism (SNP) in the TRAF1 gene express less TRAF1 protein but greater amounts of inflammatory cytokines in response to lipopolysaccharide (LPS). The TRAF1 MATH domain binds directly to three components of the linear ubiquitination (LUBAC) complex, SHARPIN, HOIP and HOIL-1, to interfere with the recruitment and linear ubiquitination of NEMO...
November 28, 2016: Nature Immunology
https://www.readbyqxmd.com/read/27881655/porcine-reproductive-and-respiratory-syndrome-virus-nsp1%C3%AE-inhibits-nf-%C3%AE%C2%BAb-activation-by-targeting-linear-ubiquitin-chain-assembly-complex-lubac
#6
Huiyuan Jing, Liurong Fang, Zhen Ding, Dang Wang, Wenqi Hao, Li Gao, Wenting Ke, Huanchun Chen, Shaobo Xiao
: Linear ubiquitination, a newly discovered posttranslational modification, is catalyzed by the linear ubiquitin chain assembly complex (LUBAC), which is composed of three subunits: one catalytic subunit HOIP and two accessory molecules, HOIL-1L and SHARPIN. Accumulating evidence suggests that linear ubiquitination plays a crucial role in innate immune signaling and especially in the activation of the NF-κB pathway by conjugating linear polyubiquitin chains to NF-κB essential modulator (NEMO, also called IKKγ), the regulatory subunit of the IKK complex...
November 23, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27875771/nemo-like-kinase-1-nlk1-and-paraxial-protocadherin-papc-cooperatively-control-xenopus-gastrulation-through-regulation-of-wnt-planar-cell-polarity-pcp-signaling
#7
Rahul Kumar, Anja Ciprianidis, Susanne Theiß, Herbert Steinbeißer, Lilian T Kaufmann
The Wnt/planar cell polarity (PCP) pathway directs cell migration during vertebrate gastrulation and is essential for proper embryonic development. Paraxial protocadherin (PAPC, Gene Symbol pcdh8.2) is an important activator of Wnt/PCP signaling during Xenopus gastrulation, but how PAPC activity is controlled is incompletely understood. Here we show that Nemo-like kinase 1 (Nlk1), an atypical mitogen-activated protein (MAP) kinase, physically associates with the C-terminus of PAPC. This interaction mutually stabilizes both proteins by inhibiting polyubiquitination...
October 28, 2016: Differentiation; Research in Biological Diversity
https://www.readbyqxmd.com/read/27806760/-the-crosstalk-between-canonical-and-noncanonical-wnt-signaling-pathway-in-osteoblast-differentiation-of-periodontal-ligament-stem-cells-in-inflammatory-microenvironments
#8
N Liu, H G Shi, W Zhang, B Gu
Objective: To investigate the crosstalk between canonical Wnt/β-catenin and noncanonical Wnt/Ca(2+) pathway in osteoblast differentiation process of periodontal ligament stem cell (PDLSC) in inflammatory microenvironments. Methods: PDLSCs were obtained from human healthy individuals(H-PDLSC) and patients with periodontitis(P-PDLSC). The H/P-PDLSCs were transfected with β-catenin siRNA. Cell morphology was observed under fluorescent microscope and transfection efficiency was easured by Western blotting after transfection of PDLSC...
November 9, 2016: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/27802825/mog-igg-in-nmo-and-related-disorders-a-multicenter-study-of-50-patients-part-3-brainstem-involvement-frequency-presentation-and-outcome
#9
Sven Jarius, Ingo Kleiter, Klemens Ruprecht, Nasrin Asgari, Kalliopi Pitarokoili, Nadja Borisow, Martin W Hümmert, Corinna Trebst, Florence Pache, Alexander Winkelmann, Lena-Alexandra Beume, Marius Ringelstein, Oliver Stich, Orhan Aktas, Mirjam Korporal-Kuhnke, Alexander Schwarz, Carsten Lukas, Jürgen Haas, Kai Fechner, Mathias Buttmann, Judith Bellmann-Strobl, Hanna Zimmermann, Alexander U Brandt, Diego Franciotta, Kathrin Schanda, Friedemann Paul, Markus Reindl, Brigitte Wildemann
BACKGROUND: Myelin oligodendrocyte glycoprotein antibodies (MOG-IgG) are present in a subset of aquaporin-4 (AQP4)-IgG-negative patients with optic neuritis (ON) and/or myelitis. Little is known so far about brainstem involvement in MOG-IgG-positive patients. OBJECTIVE: To investigate the frequency, clinical and paraclinical features, course, outcome, and prognostic implications of brainstem involvement in MOG-IgG-positive ON and/or myelitis. METHODS: Retrospective case study...
November 1, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27802824/mog-igg-in-nmo-and-related-disorders-a-multicenter-study-of-50-patients-part-4-afferent-visual-system-damage-after-optic-neuritis-in-mog-igg-seropositive-versus-aqp4-igg-seropositive-patients
#10
Florence Pache, Hanna Zimmermann, Janine Mikolajczak, Sophie Schumacher, Anna Lacheta, Frederike C Oertel, Judith Bellmann-Strobl, Sven Jarius, Brigitte Wildemann, Markus Reindl, Amy Waldman, Kerstin Soelberg, Nasrin Asgari, Marius Ringelstein, Orhan Aktas, Nikolai Gross, Mathias Buttmann, Thomas Ach, Klemens Ruprecht, Friedemann Paul, Alexander U Brandt
BACKGROUND: Antibodies against myelin oligodendrocyte glycoprotein (MOG-IgG) have been reported in patients with aquaporin-4 antibody (AQP4-IgG)-negative neuromyelitis optica spectrum disorders (NMOSD). The objective of this study was to describe optic neuritis (ON)-induced neuro-axonal damage in the retina of MOG-IgG-positive patients in comparison with AQP4-IgG-positive NMOSD patients. METHODS: Afferent visual system damage following ON was bilaterally assessed in 16 MOG-IgG-positive patients with a history of ON and compared with that in 16 AQP4-IgG-positive NMOSD patients...
November 1, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27793206/mog-igg-in-nmo-and-related-disorders-a-multicenter-study-of-50-patients-part-2-epidemiology-clinical-presentation-radiological-and-laboratory-features-treatment-responses-and-long-term-outcome
#11
Sven Jarius, Klemens Ruprecht, Ingo Kleiter, Nadja Borisow, Nasrin Asgari, Kalliopi Pitarokoili, Florence Pache, Oliver Stich, Lena-Alexandra Beume, Martin W Hümmert, Marius Ringelstein, Corinna Trebst, Alexander Winkelmann, Alexander Schwarz, Mathias Buttmann, Hanna Zimmermann, Joseph Kuchling, Diego Franciotta, Marco Capobianco, Eberhard Siebert, Carsten Lukas, Mirjam Korporal-Kuhnke, Jürgen Haas, Kai Fechner, Alexander U Brandt, Kathrin Schanda, Orhan Aktas, Friedemann Paul, Markus Reindl, Brigitte Wildemann
BACKGROUND: A subset of patients with neuromyelitis optica spectrum disorders (NMOSD) has been shown to be seropositive for myelin oligodendrocyte glycoprotein antibodies (MOG-IgG). OBJECTIVE: To describe the epidemiological, clinical, radiological, cerebrospinal fluid (CSF), and electrophysiological features of a large cohort of MOG-IgG-positive patients with optic neuritis (ON) and/or myelitis (n = 50) as well as attack and long-term treatment outcomes. METHODS: Retrospective multicenter study...
September 27, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27788675/mog-igg-in-nmo-and-related-disorders-a-multicenter-study-of-50-patients-part-1-frequency-syndrome-specificity-influence-of-disease-activity-long-term-course-association-with-aqp4-igg-and-origin
#12
Sven Jarius, Klemens Ruprecht, Ingo Kleiter, Nadja Borisow, Nasrin Asgari, Kalliopi Pitarokoili, Florence Pache, Oliver Stich, Lena-Alexandra Beume, Martin W Hümmert, Corinna Trebst, Marius Ringelstein, Orhan Aktas, Alexander Winkelmann, Mathias Buttmann, Alexander Schwarz, Hanna Zimmermann, Alexander U Brandt, Diego Franciotta, Marco Capobianco, Joseph Kuchling, Jürgen Haas, Mirjam Korporal-Kuhnke, Soeren Thue Lillevang, Kai Fechner, Kathrin Schanda, Friedemann Paul, Brigitte Wildemann, Markus Reindl
BACKGROUND: Antibodies to myelin oligodendrocyte glycoprotein (MOG-IgG) have been suggested to play a role in a subset of patients with neuromyelitis optica and related disorders. OBJECTIVE: To assess (i) the frequency of MOG-IgG in a large and predominantly Caucasian cohort of patients with optic neuritis (ON) and/or myelitis; (ii) the frequency of MOG-IgG among AQP4-IgG-positive patients and vice versa; (iii) the origin and frequency of MOG-IgG in the cerebrospinal fluid (CSF); (iv) the presence of MOG-IgG at disease onset; and (v) the influence of disease activity and treatment status on MOG-IgG titers...
September 26, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27777308/molecular-determinants-of-scaffold-induced-linear-ubiquitinylation-of-b-cell-lymphoma-leukemia-10-bcl10-during-t-cell-receptor-and-oncogenic-caspase-recruitment-domain-containing-protein-11-card11-signaling
#13
Yong-Kang Yang, Chao Yang, Waipan Chan, Zhaoquan Wang, Katelynn E Deibel, Joel L Pomerantz
The activation of NF-κB downstream of T Cell Receptor (TCR) engagement is a key signaling step required for normal lymphocyte function during the adaptive immune response. During TCR signaling, the adaptor protein Bcl10 is inducibly recruited to the CARD11 scaffold protein as part of a multicomponent complex that induces IKK kinase activity and NF-κB activation. Here we show that a consequence of this recruitment is the TCR-induced conjugation of Bcl10 with linear-linked polyubiquitin chains, to generate the signaling intermediate Lin(Ub)n-Bcl10, which is required for the association of Bcl10 with the NEMO subunit of the IKK complex...
October 24, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27768829/the-ralstonia-solanacearum-type-iii-effector-ripay-targets-plant-redox-regulators-to-suppress-immune-responses
#14
Yuying Sang, Yaru Wang, Hong Ni, Anne-Claire Cazalé, Yi-Min She, Nemo Peeters, Alberto P Macho
The subversion of plant cellular functions is essential for bacterial pathogens to proliferate in host plants and cause disease. Most bacterial plant pathogens employ a type-III secretion system to inject type-III effector (T3E) proteins inside plant cells, where they contribute to the pathogen-induced alteration of plant physiology. In this work, we found that the Ralstonia solanacearum T3E RipAY suppresses plant immune responses triggered by bacterial elicitors and by the phytohormone salicylic acid. Further biochemical analysis indicated that RipAY associates in planta with thioredoxins from Nicotiana benthamiana and Arabidopsis...
October 21, 2016: Molecular Plant Pathology
https://www.readbyqxmd.com/read/27764156/nemo-like-kinase-nlk-is-a-pathological-signaling-effector-in-the-mouse-heart
#15
Ruijie Liu, Hadi Khalil, Suh-Chin J Lin, Michelle A Sargent, Allen J York, Jeffery D Molkentin
Nemo-like kinase (NLK) is an evolutionary conserved serine/threonine protein kinase implicated in development, proliferation and apoptosis regulation. Here we identified NLK as a gene product induced in the hearts of mice subjected to pressure overload or myocardial infarction injury, suggesting a potential regulatory role with pathological stimulation to this organ. To examine the potential functional consequences of increased NLK levels, cardiac-specific transgenic mice with inducible expression of this gene product were generated, as well as cardiac-specific Nlk gene-deleted mice...
2016: PloS One
https://www.readbyqxmd.com/read/27758954/influence-of-female-sex-and-fertile-age-on-neuromyelitis-optica-spectrum-disorders
#16
Nadja Borisow, Ingo Kleiter, Anna Gahlen, Katrin Fischer, Klaus-Dieter Wernecke, Florence Pache, Klemens Ruprecht, Joachim Havla, Markus Krumbholz, Tania Kümpfel, Orhan Aktas, Marius Ringelstein, Christian Geis, Christoph Kleinschnitz, Achim Berthele, Bernhard Hemmer, Klemens Angstwurm, Robert Weissert, Jan-Patrick Stellmann, Simon Schuster, Martin Stangel, Florian Lauda, Hayrettin Tumani, Christoph Mayer, Lena Zeltner, Ulf Ziemann, Ralf A Linker, Matthias Schwab, Martin Marziniak, Florian Then Bergh, Ulrich Hofstadt-van Oy, Oliver Neuhaus, Alexander Winkelmann, Wael Marouf, Lioba Rückriem, Jürgen Faiss, Brigitte Wildemann, Friedemann Paul, Sven Jarius, Corinna Trebst, Kerstin Hellwig
BACKGROUND: Gender and age at onset are important epidemiological factors influencing prevalence, clinical presentation, and treatment response in autoimmune diseases. OBJECTIVE: To evaluate the impact of female sex and fertile age on aquaporin-4-antibody (AQP4-ab) status, attack localization, and response to attack treatment in patients with neuromyelitis optica (NMO) and its spectrum disorders (neuromyelitis optica spectrum disorder (NMOSD)). METHODS: Female-to-male ratios, diagnosis at last visit (NMO vs NMOSD), attack localization, attack treatment, and outcome were compared according to sex and age at disease or attack onset...
October 6, 2016: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/27744027/outcome-of-patients-with-nemo-deficiency-following-allogeneic-hematopoietic-cell-transplant
#17
Shanmuganathan Chandrakasan, Rebecca A Marsh, Gulbu Uzel, Steven M Holland, Kara N Shah, Jack Bleesing
No abstract text is available yet for this article.
October 12, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27717746/brain-and-muscle-aryl-hydrocarbon-receptor-nuclear-translocator-like-protein-1-cooperates-with-glycogen-synthase-kinase-3%C3%AE-to-regulate-osteogenesis-of-bone-marrow-mesenchymal-stem-cells-in-type-2-diabetes
#18
Xiaoguang Li, Na Liu, Yizhu Wang, Jinglong Liu, Haigang Shi, Zhenzhen Qu, Tingting Du, Bin Guo, Bin Gu
Type 2 diabetes mellitus (T2DM) is associated with inhibited osteogenesis of bone marrow mesenchymal stem cells (BMSCs). Brain and muscle ARNT-like protein 1 (BMAL1) has been linked to the T2DM-related bone remodeling, however, the specific mechanism is still unclear. Herein, we aimed to determine the role of BMAL1 in T2DM-induced suppression of BMSCs osteogenesis. Inhibited osteogenesis and BMAL1 expression were showed in diabetic BMSCs. And while β-catenin and T cell factor (TCF) expression were decreased, the glycogen synthase kinase-3β (GSK-3β) and nemo-like kinase (NLK) expression were increased in diabetic BMSCs...
October 4, 2016: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/27713081/trackmate-an-open-and-extensible-platform-for-single-particle-tracking
#19
Jean-Yves Tinevez, Nick Perry, Johannes Schindelin, Genevieve M Hoopes, Gregory D Reynolds, Emmanuel Laplantine, Sebastian Y Bednarek, Spencer L Shorte, Kevin W Eliceiri
We present TrackMate, an open source Fiji plugin for the automated, semi-automated, and manual tracking of single-particles. It offers a versatile and modular solution that works out of the box for end users, through a simple and intuitive user interface. It is also easily scriptable and adaptable, operating equally well on 1D over time, 2D over time, 3D over time, or other single and multi-channel image variants. TrackMate provides several visualization and analysis tools that aid in assessing the relevance of results...
October 3, 2016: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/27702682/perinatal-programming-of-depressive-like-behavior-by-inflammation-in-adult-offspring-mice-whose-mothers-were-fed-polluted-eels-gender-selective-effects
#20
Nidhal Soualeh, Imen Dridi, Gauthier Eppe, Christophe Némos, Rachid Soulimani, Jaouad Bouayed
Several lines of evidence indicate that early-life inflammation may predispose to mental illness, including depression, in later-life. We investigated the impact of perinatal exposure to polluted eels on neonatal, postnatal, and adult brain inflammation, and on the resignation behavior of male and female adult offspring mice. The effects of maternal standard diet (laboratory food) were compared to the same diet enriched with low, intermediate, or highly polluted eels. Brain inflammatory markers including cytokines were assessed in offspring mice on the day of birth (i...
October 1, 2016: Brain, Behavior, and Immunity
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