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https://www.readbyqxmd.com/read/28652179/non-coding-rna-regulation-of-t-cell-biology-implications-for-age-associated-cardiovascular-diseases
#1
REVIEW
Jose Coelho-Lima, Ioakim Spyridopoulos
Prevalence of age-associated cardiovascular diseases (CVD) has dramatically increased as a result of improvements in life expectancy. Chronic inflammation is a shared pathophysiological feature of age-associated CVDs, indicating a role for the immune system in the onset and development of CVDs. Indeed, ageing elicits profound changes in both the cardiovascular and immune system, especially in the T cell compartment. Although such changes have been well described at the cellular level, the molecular mechanisms underlying immune-mediated cardiovascular ageing remain largely unexplored...
June 23, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28650457/fibroblast-growth-factor-19-regulates-skeletal-muscle-mass-and-ameliorates-muscle-wasting-in-mice
#2
Bérengère Benoit, Emmanuelle Meugnier, Martina Castelli, Stéphanie Chanon, Aurélie Vieille-Marchiset, Christine Durand, Nadia Bendridi, Sandra Pesenti, Pierre-Axel Monternier, Anne-Cécile Durieux, Damien Freyssenet, Jennifer Rieusset, Etienne Lefai, Hubert Vidal, Jérôme Ruzzin
The endocrine-derived hormone fibroblast growth factor (FGF) 19 has recently emerged as a potential target for treating metabolic disease. Given that skeletal muscle is a key metabolic organ, we explored the role of FGF19 in that tissue. Here we report a novel function of FGF19 in regulating skeletal muscle mass through enlargement of muscle fiber size, and in protecting muscle from atrophy. Treatment with FGF19 causes skeletal muscle hypertrophy in mice, while physiological and pharmacological doses of FGF19 substantially increase the size of human myotubes in vitro...
June 26, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28649736/high-aspect-ratio-sub-micrometer-channels-using-wet-etching-application-to-the-dynamics-of-red-blood-cell-transiting-through-biomimetic-splenic-slits
#3
Priya Gambhire, Scott Atwell, Cécile Iss, Frédéric Bedu, Igor Ozerov, Catherine Badens, Emmanuèle Helfer, Annie Viallat, Anne Charrier
Nanoparticles delivering drugs, disseminating cancer cells, and red blood cells (RBCs) during splenic filtration must deform and pass through the sub-micrometer and high aspect ratio interstices between the endothelial cells lining blood vessels. The dynamics of passage of particles/cells through these slit-like interstices remain poorly understood because the in vitro reproduction of slits with physiological dimensions in devices compatible with optical microscopy observations requires expensive technologies...
June 26, 2017: Small
https://www.readbyqxmd.com/read/28648900/tet-catalyzed-5-hydroxymethylation-precedes-hnf4a-promoter-choice-during-differentiation-of-bipotent-liver-progenitors
#4
Pierre-Benoit Ancey, Szilvia Ecsedi, Marie-Pierre Lambert, Fazlur Rahman Talukdar, Marie-Pierre Cros, Denise Glaise, Diana Maria Narvaez, Veronique Chauvet, Zdenko Herceg, Anne Corlu, Hector Hernandez-Vargas
Understanding the processes that govern liver progenitor cell differentiation has important implications for the design of strategies targeting chronic liver diseases, whereby regeneration of liver tissue is critical. Although DNA methylation (5mC) and hydroxymethylation (5hmC) are highly dynamic during early embryonic development, less is known about their roles at later stages of differentiation. Using an in vitro model of hepatocyte differentiation, we show here that 5hmC precedes the expression of promoter 1 (P1)-dependent isoforms of HNF4A, a master transcription factor of hepatocyte identity...
June 19, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28647344/oncogene-expressing-senescent-melanocytes-upregulate-mhc-class-ii-a-candidate-melanoma-suppressor-function
#5
John van Tuyn, Farah Jaber-Hijazi, Douglas MacKenzie, John J Cole, Elizabeth Mann, Jeff S Pawlikowski, Taranjit Singh Rai, David M Nelson, Tony McBryan, Andre Ivanov, Karen Blyth, Hong Wu, Simon Milling, Peter D Adams
On acquisition of an oncogenic mutation, primary human and mouse cells can enter oncogene-induced senescence (OIS). OIS is characterized by a stable proliferation arrest and secretion of pro-inflammatory cytokines and chemokines, the senescence-associated secretory phenotype (SASP). Proliferation arrest and the SASP collaborate to enact tumor suppression, the former by blocking cell proliferation and the latter by recruiting immune cells to clear damaged cells. However, the interactions of OIS cells with the immune system are still poorly defined...
June 21, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28645296/myd88-dependent-pro-interleukin-1%C3%AE-induction-in-dendritic-cells-exposed-to-food-grade-synthetic-amorphous-silica
#6
Hans Christian Winkler, Julian Kornprobst, Peter Wick, Lea Maria von Moos, Ioannis Trantakis, Elisabeth Maria Schraner, Barbara Bathke, Hubertus Hochrein, Mark Suter, Hanspeter Naegeli
BACKGROUND: Dendritic cells (DCs) are specialized first-line sensors of foreign materials invading the organism. These sentinel cells rely on pattern recognition receptors such as Nod-like or Toll-like receptors (TLRs) to launch immune reactions against pathogens, but also to mediate tolerance to self-antigens and, in the intestinal milieu, to nutrients and commensals. Since inappropriate DC activation contributes to inflammatory diseases and immunopathologies, a key question in the evaluation of orally ingested nanomaterials is whether their contact with DCs in the intestinal mucosa disrupts this delicate homeostatic balance between pathogen defense and tolerance...
June 23, 2017: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/28644434/ageing-and-hypoxia-cause-protein-aggregation-in-mitochondria
#7
Daniel M Kaufman, Xia Wu, Barbara A Scott, Omar A Itani, Marc R Van Gilst, James E Bruce, C Michael Crowder
Aggregation of cytosolic proteins is a pathological finding in disease states, including ageing and neurodegenerative diseases. We have previously reported that hypoxia induces protein misfolding in Caenorhabditis elegans mitochondria, and electron micrographs suggested protein aggregates. Here, we seek to determine whether mitochondrial proteins actually aggregate after hypoxia and other cellular stresses. To enrich for mitochondrial proteins that might aggregate, we performed a proteomics analysis on purified C...
June 23, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28637620/runx1-deficiency-familial-platelet-disorder-with-predisposition-to-myeloid-leukemia-fpdmm
#8
REVIEW
Brigitte Schlegelberger, Paula G Heller
In this review, we discuss disease-causing alterations of RUNT-related transcription factor 1 (RUNX1), a master regulator of hematopoietic differentiation. Familial platelet disorder with predisposition to myeloid leukemia (FPDMM) typically presents with (1) mild to moderate thrombocytopenia with normal-sized platelets; (2) functional platelets defects leading to prolonged bleeding; and (3) an increased risk to develop myelodysplastic syndromes (MDS), acute myeloid leukemia (AML), or T-cell acute lymphoblastic leukemia (T-ALL)...
April 2017: Seminars in Hematology
https://www.readbyqxmd.com/read/28636874/next-generation-matrix-metalloproteinase-inhibitors-novel-strategies-bring-new-prospects
#9
REVIEW
Maxim Levin, Yael Udi, Inna Solomonov, Irit Sagi
Enzymatic proteolysis of cell surface proteins and extracellular matrix (ECM) is critical for tissue homeostasis and cell signaling. These proteolytic activities are mediated predominantly by a family of proteases termed matrix metalloproteinases (MMPs). The growing evidence in recent years that ECM and non-ECM bioactive molecules (e.g., growth factors, cytokines, chemokines, on top of matrikines and matricryptins) have versatile functions redefines our view on the roles matrix remodeling enzymes play in many physiological and pathological processes, and underscores the notion that ECM proteolytic reaction mechanisms represent master switches in the regulation of critical biological processes and govern cell behavior...
June 18, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28625535/glial-specific-functions-of-microcephaly-protein-wdr62-and-interaction-with-the-mitotic-kinase-aurka-are-essential-for-drosophila-brain-growth
#10
Nicholas R Lim, Belal Shohayeb, Olga Zaytseva, Naomi Mitchell, S Sean Millard, Dominic C H Ng, Leonie M Quinn
The second most commonly mutated gene in primary microcephaly (MCPH) patients is wd40-repeat protein 62 (wdr62), but the relative contribution of WDR62 function to the growth of major brain lineages is unknown. Here, we use Drosophila models to dissect lineage-specific WDR62 function(s). Interestingly, although neural stem cell (neuroblast)-specific depletion of WDR62 significantly decreased neuroblast number, brain size was unchanged. In contrast, glial lineage-specific WDR62 depletion significantly decreased brain volume...
June 9, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28625492/cbmg-a-novel-derivative-of-mansonone-g-suppresses-adipocyte-differentiation-via-suppression-of-ppar%C3%AE-activity
#11
Hyo Kyeong Kim, Rita Hairani, Hana Jeong, Mi Gyeong Jeong, Warinthorn Chavasiri, Eun Sook Hwang
Mansorins and mansonones have been isolated from Mansonia gagei heartwoods, a traditional herbal medicine used to treat heart failure, and characterized to have anti-oxidant, anti-bacterial, anti-tumor, and anti-estrogenic activities. However, there is as yet no information on their effects on adipogenesis and lipid storage associated with heart disease. In this study, we investigated the effects of naturally occurring compounds on adipogenic differentiation and sought to develop more potent anti-adipogenic compound...
June 15, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28620389/2-deoxy-d-glucose-treatment-decreases-anti-inflammatory-m2-macrophage-polarization-in-mice-with-tumor-and-allergic-airway-inflammation
#12
Qingjie Zhao, Zhulang Chu, Linnan Zhu, Tao Yang, Peng Wang, Fang Liu, Ying Huang, Fang Zhang, Xiaodong Zhang, Wenjun Ding, Yong Zhao
As important effector cells in inflammation, macrophages can be functionally polarized into either inflammatory M1 or alternatively activated anti-inflammatory M2 phenotype depending on surroundings. The key roles of glycolysis in M1 macrophage polarization have been well defined. However, the relationship between glycolysis and M2 polarized macrophages is still poorly understood. Here, we report that 2-deoxy-d-glucose (2-DG), an inhibitor of the glycolytic pathway, markedly inhibited the expressions of Arg, Ym-1, Fizz1, and CD206 molecules, the hall-markers for M2 macrophages, during macrophages were stimulated with interleukin 4...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28620360/cytr-homolog-of-pectobacterium-carotovorum-subsp-carotovorum-controls-air-liquid-biofilm-formation-by-regulating-multiple-genes-involved-in-cellulose-production-c-di-gmp-signaling-motility-and-type-iii-secretion-system-in-response-to-nutritional-and-environmental
#13
M M Haque, M M H Oliver, Kamrun Nahar, Mohammad Z Alam, Hisae Hirata, Shinji Tsuyumu
Pectobacterium carotovorum subsp. carotovorum [Pcc (formerly Erwinia carotovora subsp. carotovora)] PC1 causes soft-rot disease in a wide variety of plant species by secreting multiple pathogenicity-related traits. In this study, regulatory mechanism of air-liquid (AL) biofilm formation was studied using a cytR homolog gene deletion mutant (ΔcytR) of Pcc PC1. Compared to the wild type (Pcc PC1), the ΔcytR mutant produced fragile and significantly (P < 0.001) lower amounts of AL biofilm on salt-optimized broth plus 2% glycerol (SOBG), yeast peptone dextrose adenine, and also on King's B at 27°C after 72 h incubation in static condition...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28620068/x-box-binding-protein-1-dependent-plasma-cell-responses-limit-the-development-of-atherosclerosis
#14
Andrew P Sage, Meritxell Nus, Jayashree Bagchi Chakraborty, Dimitrios Tsiantoulas, Stephen A Newland, Alison J Finigan, Leanne Masters, Christoph J Binder, Ziad Mallat
Rationale: Diverse B cell responses and functions may be involved in atherosclerosis. Protective antibody responses, such as those against oxidized lipid epitopes, are thought to mainly derive from T cell-independent innate B cell subsets. In contrast, both pathogenic and protective roles have been associated with T cell-dependent antibodies and their importance in both humans and mouse models is still unclear. Objective: To specifically target antibody production by plasma cells and determine the impact on atherosclerotic plaque development in mice with and without CD4+ T cells...
June 15, 2017: Circulation Research
https://www.readbyqxmd.com/read/28618965/time-dependent-effects-of-prognostic-biomarkers-of-systemic-inflammation-in-patients-with-metastatic-renal-cell-carcinoma
#15
Wayne B Harris, Chao Zhang, Yuan Liu, Dale K Robertson, Mikhail Y Akbashev, Brian M Lingerfelt, Omer Kucuk, Bradley C Carthon, Theresa W Gillespie, Adeboye O Osunkoya, Viraj A Master
The goal of this study was to examine time-dependent effects of prognostic biomarkers of systemic inflammation in patients with metastatic renal cell carcinoma. Retrospective chart reviews were conducted at the Winship Cancer Institute of Emory University and the Atlanta Veterans Administration Medical Center with authorization from the Emory University Institutional Review Board and the Veterans Administration Research and Development Committee. Inclusion criteria included age ⩾18 years, treatment with targeted therapy for clear cell or non-clear cell metastatic renal cell carcinoma and concomitant assessment of C-reactive protein and albumin levels on ⩾3 occasions that were ⩾10 days apart...
June 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28617942/withasteroid-b-from-d-metel-l-regulates-immune-responses-by-modulating-the-jak-stat-pathway-and-the-il-17-ror%C3%AE-t-il-10-foxp3-ratio
#16
Yang Su, Qiuhong Wang, Bingyou Yang, Lun Wu, Genhong Cheng, Haixue Kuang
Datura metel L. is a medicinal herb that contains withasteroids and has a wide range of biological activities. We isolated 7 withasteroids from the flowers of D. metel L(1) . and examined their ability to inhibit immune responses in vitro and in vivo. Among the withasteroids, B2(2) exhibited the strongest inhibitory effect on immune responses comparing B2 with other isolated compounds from D. metel L., including suppressing the differentiation of CD4(+3) T cells by inhibiting the expression and production of T cell lineage-specific master regulators and cytokines and directly suppressing the cytokine-induced JAK/STAT(4) signaling pathways...
June 15, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28615462/posttranslational-modification-as-a-critical-determinant-of-cytoplasmic-innate-immune-recognition
#17
REVIEW
Paul J Baker, Dominic De Nardo, Fiona Moghaddas, Le Son Tran, Annabell Bachem, Tan Nguyen, Thomas Hayman, Hazel Tye, James E Vince, Sammy Bedoui, Richard L Ferrero, Seth L Masters
Cell surface innate immune receptors can directly detect a variety of extracellular pathogens to which cytoplasmic innate immune sensors are rarely exposed. Instead, within the cytoplasm, the environment is rife with cellular machinery and signaling pathways that are indirectly perturbed by pathogenic microbes to activate intracellular sensors, such as pyrin, NLRP1, NLRP3, or NLRC4. Therefore, subtle changes in key intracellular processes such as phosphorylation, ubiquitination, and other pathways leading to posttranslational protein modification are key determinants of innate immune recognition in the cytoplasm...
July 1, 2017: Physiological Reviews
https://www.readbyqxmd.com/read/28608501/targeting-hypoxia-mediated-yap1-nuclear-translocation-ameliorates-pathogenesis-of-endometriosis-without-compromising-maternal-fertility
#18
Shih-Chieh Lin, Hsiu-Chi Lee, Pei-Chi Hou, Jhao-Lin Fu, Meng-Hsing Wu, Shaw-Jenq Tsai
Endometriosis is a highly prevalent gynecological disease that severely reduces women's health and quality of life. Ectopic endometriotic lesions have evolved mechanisms to survive in the hypoxic peritoneal microenvironment by regulating the expression of a significant subset of genes. However, the master regulator controlling these genes remains to be characterized. Herein, by using bioinformatics analysis and experimental verification, we identified Yes-Associated Protein 1 (YAP1) as a master regulator of endometriosis...
June 12, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28604750/lncrna-mediated-regulation-of-cell-signaling-in-cancer
#19
REVIEW
W-X Peng, P Koirala, Y-Y Mo
To date, a large number of long non-coding RNAs (lncRNAs) have been recently discovered through functional genomics studies. Importantly, lncRNAs have been shown, in many cases, to function as master regulators for gene expression and thus, they can play a critical role in various biological functions and disease processes including cancer. Although the lncRNA-mediated gene expression involves various mechanisms, such as regulation of transcription, translation, protein modification, and the formation of RNA-protein or protein-protein complexes, in this review, we discuss the latest developments primarily in important cell signaling pathways regulated by lncRNAs in cancer...
June 12, 2017: Oncogene
https://www.readbyqxmd.com/read/28603486/comparison-of-sirtuin-3-levels-in-als-and-huntington-s-disease-differential-effects-in-human-tissue-samples-vs-transgenic-mouse-models
#20
Eva Buck, Hanna Bayer, Katrin S Lindenberg, Johannes Hanselmann, Noemi Pasquarelli, Albert C Ludolph, Patrick Weydt, Anke Witting
Neurodegenerative diseases are characterized by distinct patterns of neuronal loss. In amyotrophic lateral sclerosis (ALS) upper and lower motoneurons degenerate whereas in Huntington's disease (HD) medium spiny neurons in the striatum are preferentially affected. Despite these differences the pathophysiological mechanisms and risk factors are remarkably similar. In addition, non-neuronal features, such as weight loss implicate a dysregulation in energy metabolism. Mammalian sirtuins, especially the mitochondrial NAD+ dependent sirtuin 3 (SIRT3), regulate mitochondrial function and aging processes...
2017: Frontiers in Molecular Neuroscience
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