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https://www.readbyqxmd.com/read/28813657/interferon-%C3%AE-represses-m2-gene-expression-in-human-macrophages-by-disassembling-enhancers-bound-by-the-transcription-factor-maf
#1
Kyuho Kang, Sung Ho Park, Janice Chen, Yu Qiao, Eugenia Giannopoulou, Karen Berg, Adedayo Hanidu, Jun Li, Gerald Nabozny, Keunsoo Kang, Kyung-Hyun Park-Min, Lionel B Ivashkiv
Mechanisms by which interferon (IFN)-γ activates genes to promote macrophage activation are well studied, but little is known about mechanisms and functions of IFN-γ-mediated gene repression. We used an integrated transcriptomic and epigenomic approach to analyze chromatin accessibility, histone modifications, transcription-factor binding, and gene expression in IFN-γ-primed human macrophages. IFN-γ suppressed basal expression of genes corresponding to an "M2"-like homeostatic and reparative phenotype. IFN-γ repressed genes by suppressing the function of enhancers enriched for binding by transcription factor MAF...
August 15, 2017: Immunity
https://www.readbyqxmd.com/read/28813497/high-hydrostatic-pressure-induces-pro-osteoarthritic-changes-in-cartilage-precursor-cells-a-transcriptome-analysis
#2
Kevin Montagne, Yasuko Onuma, Yuzuru Ito, Yasuhiko Aiki, Katsuko S Furukawa, Takashi Ushida
Due to the high water content of cartilage, hydrostatic pressure is likely one of the main physical stimuli sensed by chondrocytes. Whereas, in the physiological range (0 to around 10 MPa), hydrostatic pressure exerts mostly pro-chondrogenic effects in chondrocyte models, excessive pressures have been reported to induce detrimental effects on cartilage, such as increased apoptosis and inflammation, and decreased cartilage marker expression. Though some genes modulated by high pressure have been identified, the effects of high pressure on the global gene expression pattern have still not been investigated...
2017: PloS One
https://www.readbyqxmd.com/read/28813489/oxidative-and-glycolytic-skeletal-muscles-show-marked-differences-in-gene-expression-profile-in-chinese-qingyuan-partridge-chickens
#3
Shu Jingting, Xiao Qin, Shan Yanju, Zhang Ming, Tu Yunjie, Ji Gaige, Sheng Zhongwei, Zou Jianmin
Oxidative and glycolytic myofibers have different structures and metabolic characteristics and their ratios are important in determining poultry meat quality. However, the molecular mechanisms underlying their differences are unclear. In this study, global gene expression profiling was conducted in oxidative skeletal muscle (obtained from the soleus, or SOL) and glycolytic skeletal muscle (obtained from the extensor digitorum longus, or EDL) of Chinese Qingyuan partridge chickens, using the Agilent Chicken Gene Expression Chip...
2017: PloS One
https://www.readbyqxmd.com/read/28813466/comprehensive-comparison-of-neonate-and-adult-human-platelet-transcriptomes
#4
Eva Caparrós-Pérez, Raúl Teruel-Montoya, Mª José López-Andreo, Mª Carmen Llanos, José Rivera, Verónica Palma-Barqueros, Jose E Blanco, Vicente Vicente, Constantino Martínez, Francisca Ferrer-Marín
Understanding the underlying mechanisms of the well-substantiated platelet hyporeactivity in neonates is of interest given their implications for the clinical management of newborns, a population at higher bleeding risk than adults (especially sick and preterm infants), as well as for gaining insight into the regulatory mechanisms of platelet biology. Transcriptome analysis is useful in identifying mRNA signatures affecting platelet function. However, human fetal/neonatal platelet transcriptome analysis has never before been reported...
2017: PloS One
https://www.readbyqxmd.com/read/28813415/cdk4-6-inhibition-triggers-anti-tumour-immunity
#5
Shom Goel, Molly J DeCristo, April C Watt, Haley BrinJones, Jaclyn Sceneay, Ben B Li, Naveed Khan, Jessalyn M Ubellacker, Shaozhen Xie, Otto Metzger-Filho, Jeremy Hoog, Matthew J Ellis, Cynthia X Ma, Susanne Ramm, Ian E Krop, Eric P Winer, Thomas M Roberts, Hye-Jung Kim, Sandra S McAllister, Jean J Zhao
Cyclin-dependent kinases 4 and 6 (CDK4/6) are fundamental drivers of the cell cycle and are required for the initiation and progression of various malignancies. Pharmacological inhibitors of CDK4/6 have shown significant activity against several solid tumours. Their primary mechanism of action is thought to be the inhibition of phosphorylation of the retinoblastoma tumour suppressor, inducing G1 cell cycle arrest in tumour cells. Here we use mouse models of breast carcinoma and other solid tumours to show that selective CDK4/6 inhibitors not only induce tumour cell cycle arrest, but also promote anti-tumour immunity...
August 16, 2017: Nature
https://www.readbyqxmd.com/read/28813177/how-single-cell-genomics-is-changing-evolutionary-and-developmental-biology
#6
John C Marioni, Detlev Arendt
The recent flood of single-cell data not only boosts our knowledge of cells and cell types, but also provides new insight into development and evolution from a cellular perspective. For example, assaying the genomes of multiple cells during development reveals developmental lineage trees-the kinship lineage-whereas cellular transcriptomes inform us about the regulatory state of cells and their gradual restriction in potency-the Waddington lineage. Beyond that, the comparison of single-cell data across species allows evolutionary changes to be tracked at all stages of development from the zygote, via different kinds of stem cells, to the differentiating cells...
August 16, 2017: Annual Review of Cell and Developmental Biology
https://www.readbyqxmd.com/read/28813015/transcriptional-responses-of-creeping-bentgrass-to-2-3-butanediol-a-bacterial-volatile-compound-bvc-analogue
#7
Yi Shi, Kuiju Niu, Bingru Huang, Wenhui Liu, Huiling Ma
Bacterial volatile compounds (BVCs) have been reported to enhance plant growth and elicit plant defenses against fungal infection and insect damage. The objective of this study was to determine transcriptomic changes in response to synthetic BVC that could be associated with plant resistance to Rhizoctonia solani in creeping bentgrass. The 2,3-butanediol (BD) (250 µM) was sprayed on creeping bentgrass leaves grown in jam jars. The result showed that synthetic BD induced plant defense against R. solani for creeping bentgrass...
August 16, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28812732/genome-of-the-pitcher-plant-cephalotus-reveals-genetic-changes-associated-with-carnivory
#8
Kenji Fukushima, Xiaodong Fang, David Alvarez-Ponce, Huimin Cai, Lorenzo Carretero-Paulet, Cui Chen, Tien-Hao Chang, Kimberly M Farr, Tomomichi Fujita, Yuji Hiwatashi, Yoshikazu Hoshi, Takamasa Imai, Masahiro Kasahara, Pablo Librado, Likai Mao, Hitoshi Mori, Tomoaki Nishiyama, Masafumi Nozawa, Gergő Pálfalvi, Stephen T Pollard, Julio Rozas, Alejandro Sánchez-Gracia, David Sankoff, Tomoko F Shibata, Shuji Shigenobu, Naomi Sumikawa, Taketoshi Uzawa, Meiying Xie, Chunfang Zheng, David D Pollock, Victor A Albert, Shuaicheng Li, Mitsuyasu Hasebe
Carnivorous plants exploit animals as a nutritional source and have inspired long-standing questions about the origin and evolution of carnivory-related traits. To investigate the molecular bases of carnivory, we sequenced the genome of the heterophyllous pitcher plant Cephalotus follicularis, in which we succeeded in regulating the developmental switch between carnivorous and non-carnivorous leaves. Transcriptome comparison of the two leaf types and gene repertoire analysis identified genetic changes associated with prey attraction, capture, digestion and nutrient absorption...
February 6, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812685/scallop-genome-provides-insights-into-evolution-of-bilaterian-karyotype-and-development
#9
Shi Wang, Jinbo Zhang, Wenqian Jiao, Ji Li, Xiaogang Xun, Yan Sun, Ximing Guo, Pin Huan, Bo Dong, Lingling Zhang, Xiaoli Hu, Xiaoqing Sun, Jing Wang, Chengtian Zhao, Yangfan Wang, Dawei Wang, Xiaoting Huang, Ruijia Wang, Jia Lv, Yuli Li, Zhifeng Zhang, Baozhong Liu, Wei Lu, Yuanyuan Hui, Jun Liang, Zunchun Zhou, Rui Hou, Xue Li, Yunchao Liu, Hengde Li, Xianhui Ning, Yu Lin, Liang Zhao, Qiang Xing, Jinzhuang Dou, Yangping Li, Junxia Mao, Haobing Guo, Huaiqian Dou, Tianqi Li, Chuang Mu, Wenkai Jiang, Qiang Fu, Xiaoteng Fu, Yan Miao, Jian Liu, Qian Yu, Ruojiao Li, Huan Liao, Xuan Li, Yifan Kong, Zhi Jiang, Daniel Chourrout, Ruiqiang Li, Zhenmin Bao
Reconstructing the genomes of bilaterian ancestors is central to our understanding of animal evolution, where knowledge from ancient and/or slow-evolving bilaterian lineages is critical. Here we report a high-quality, chromosome-anchored reference genome for the scallop Patinopecten yessoensis, a bivalve mollusc that has a slow-evolving genome with many ancestral features. Chromosome-based macrosynteny analysis reveals a striking correspondence between the 19 scallop chromosomes and the 17 presumed ancestral bilaterian linkage groups at a level of conservation previously unseen, suggesting that the scallop may have a karyotype close to that of the bilaterian ancestor...
April 3, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28811843/transcriptomics-and-methylomics-in-chronic-periodontitis-with-tobacco-use-a-pilot-study
#10
Young-Dan Cho, Pil-Jong Kim, Hong-Gee Kim, Yang-Jo Seol, Yong-Moo Lee, Young Ku, In-Chul Rhyu, Hyun-Mo Ryoo
BACKGROUND: Accumulating evidence suggests that tobacco smoking affects the susceptibility to and severity of chronic periodontitis. Epigenetics may explain the role of smoking in the development and progress of periodontal disease. In this study, we performed transcriptomic and methylomic analyses of non-periodontitis and periodontitis-affected gingival tissues according to smoking status. METHODS: Human gingival tissues were obtained from 20 patients, including non-smokers with and without periodontitis (n = 5 per group) and smokers with and without periodontitis (n = 5 per group)...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/28811834/high-risk-human-papilloma-viruses-hpvs-are-present-in-benign-prostate-tissues-before-development-of-hpv-associated-prostate-cancer
#11
Wendy K Glenn, Christopher C Ngan, Timothy G Amos, Richard J Edwards, Joshua Swift, Louise Lutze-Mann, Fei Shang, Noel J Whitaker, James S Lawson
BACKGROUND: Although high risk HPVs are associated with an increased risk of prostate cancer it is not known if they have a causal role. The purpose of this study is to investigate the potential role of human papilloma viruses (HPVs) in prostate cancer. The aims are (i) to investigate the presence and confirm the identity of high risk HPVs in benign prostate tissues prior to the development of HPV positive prostate cancer in the same patients, and (ii) to determine if HPVs are biologically active...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28811753/characterization-of-the-rosellinia-necatrix-transcriptome-and-genes-related-to-pathogenesis-by-single-molecule-mrna-sequencing
#12
Hyeongmin Kim, Seung Jae Lee, Ick-Hyun Jo, Jinsu Lee, Wonsil Bae, Hyemin Kim, Kyungho Won, Tae Kyung Hyun, Hojin Ryu
White root rot disease, caused by the pathogen Rosellinia necatrix, is one of the world's most devastating plant fungal diseases and affects several commercially important species of fruit trees and crops. Recent global outbreaks of R. necatrix and advances in molecular techniques have both increased interest in this pathogen. However, the lack of information regarding the genomic structure and transcriptome of R. necatrix has been a barrier to the progress of functional genomic research and the control of this harmful pathogen...
August 2017: Plant Pathology Journal
https://www.readbyqxmd.com/read/28811647/biogenesis-of-pro-senescent-microparticles-by-endothelial-colony-forming-cells-from-premature-neonates-is-driven-by-sirt1-dependent-epigenetic-regulation-of-mkk6
#13
Stéphanie Simoncini, Anne-Line Chateau, Stéphane Robert, Dilyana Todorova, Catherine Yzydorzick, Romaric Lacroix, Isabelle Ligi, Laurence Louis, Richard Bachelier, Umberto Simeoni, Frédérique Magdinier, Françoise Dignat-George, Florence Sabatier
Senescent cells may exert detrimental effect on microenvironment through the secretion of soluble factors and the release of extracellular vesicles, such as microparticles, key actors in ageing and cardiovascular diseases. We previously reported that sirtuin-1 (SIRT1) deficiency drives accelerated senescence and dysfunction of endothelial colony-forming cells (ECFC) in PT neonates. Because preterm birth (PT) increases the risk for cardiovascular diseases during neonatal period as well as at adulthood, we hypothesized that SIRT1 deficiency could control the biogenesis of microparticles as part of a senescence-associated secretory phenotype (SASP) of PT-ECFC and investigated the related molecular mechanisms...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811643/overexpressed-somatic-alleles-are-enriched-in-functional-elements-in-breast-cancer
#14
Paula Restrepo, Mercedeh Movassagh, Nawaf Alomran, Christian Miller, Muzi Li, Chris Trenkov, Yulian Manchev, Sonali Bahl, Stephanie Warnken, Liam Spurr, Tatiyana Apanasovich, Keith Crandall, Nathan Edwards, Anelia Horvath
Asymmetric allele content in the transcriptome can be indicative of functional and selective features of the underlying genetic variants. Yet, imbalanced alleles, especially from diploid genome regions, are poorly explored in cancer. Here we systematically quantify and integrate the variant allele fraction from corresponding RNA and DNA sequence data from patients with breast cancer acquired through The Cancer Genome Atlas (TCGA). We test for correlation between allele prevalence and functionality in known cancer-implicated genes from the Cancer Gene Census (CGC)...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811613/transcriptomic-analysis-of-nickel-exposure-in-sphingobium-sp-ba1-cells-using-rna-seq
#15
M Volpicella, C Leoni, C Manzari, M Chiara, E Picardi, E Piancone, F Italiano, A D'Erchia, M Trotta, D S Horner, G Pesole, L R Ceci
Nickel acts as cofactor for a number of enzymes of many bacteria species. Its homeostasis is ensured by proteins working as ion efflux or accumulation systems. These mechanisms are also generally adopted to counteract life-threatening high extra-cellular Ni(2+) concentrations. Little is known regarding nickel tolerance in the genus Sphingobium. We studied the response of the novel Sphingobium sp. ba1 strain, able to adapt to high Ni(2+) concentrations. Differential gene expression in cells cultured in 10 mM Ni(2+), investigated by RNA-seq analysis, identified 118 differentially expressed genes...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811603/2-4-6-trinitrotoluene-induces-apoptosis-via-ros-regulated-mitochondrial-dysfunction-and-endoplasmic-reticulum-stress-in-hepg2-and-hep3b-cells
#16
Hung-Yu Liao, Chih-Ming Kao, Chao-Ling Yao, Po-Wei Chiu, Chun-Chen Yao, Ssu-Ching Chen
2,4,6-trinitrotoluene (TNT) has been reported to cause numerous adverse effects. However, the detailed molecular mechanisms underlying TNT-induced liver toxicity need to be elucidated. In this study, we used HepG2 (p53wt) and Hep3B (p53null) cell lines to investigate the cytotoxic effects of TNT. At first, we found that TNT significantly decreased cell viability and induced DNA damage. Thereafter, through transcriptomic analysis, we observed that the diverse biological functions affected included mitochondrial dysfunction and endoplasmic reticulum (ER) stress...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811595/delayed-effects-of-transcriptional-responses-in-mycobacterium-tuberculosis-exposed-to-nitric-oxide-suggest-other-mechanisms-involved-in-survival
#17
Teresa Cortes, Olga T Schubert, Amir Banaei-Esfahani, Ben C Collins, Ruedi Aebersold, Douglas B Young
Mycobacterium tuberculosis has succeeded as a human pathogen for tens of thousands of years thanks to its ability to resist and adapt to the adverse conditions it encounters upon infection. Bacterial adaptation to stress is commonly viewed in the context of transcriptional regulation, with the implicit expectation that an initial transcriptomic response is tightly coupled to an ensuing proteomic response. However, after challenging M. tuberculosis with nitric oxide we found that the rapid transcriptional responses, detectable within minutes of nitric oxide exposure, typically took several hours to manifest on the protein level...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811572/inhibition-of-connexin-hemichannels-alleviates-non-alcoholic-steatohepatitis-in-mice
#18
Joost Willebrords, Bruno Cogliati, Isabel Veloso Alves Pereira, Tereza Cristina da Silva, Sara Crespo Yanguas, Michaël Maes, Veronica Mollica Govoni, Andressa Lima, Daniele Aparecida Felisbino, Elke Decrock, Marina Sayuri Nogueira, Inar Alves de Castro, Isabelle Leclercq, Luc Leybaert, Robim Marcelino Rodrigues, Mathieu Vinken
While gap junctions mediate intercellular communication and support liver homeostasis, connexin hemichannels are preferentially opened by pathological stimuli, including inflammation and oxidative stress. The latter are essential features of non-alcoholic steatohepatitis. In this study, it was investigated whether connexin32 and connexin43 hemichannels play a role in non-alcoholic steatohepatitis. Mice were fed a choline-deficient high-fat diet or normal diet for 8 weeks. Thereafter, TAT-Gap24 or TAT-Gap19, specific inhibitors of hemichannels composed of connexin32 and connexin43, respectively, were administered for 2 weeks...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811563/crosstalk-between-diurnal-rhythm-and-water-stress-reveals-an-altered-primary-carbon-flux-into-soluble-sugars-in-drought-treated-rice-leaves
#19
Seo-Woo Kim, Sang-Kyu Lee, Hee-Jeong Jeong, Gynheung An, Jong-Seong Jeon, Ki-Hong Jung
Plants retain rhythmic physiological responses when adapting to environmental challenges. However, possible integrations between drought conditions and those responses have not received much focus, especially regarding crop plants, and the relationship between abiotic stress and the diurnal cycle is generally not considered. Therefore, we conducted a genome-wide analysis to identify genes showing both diurnal regulation and water-deficiency response in rice (Oryza sativa). Among the 712 drought-responsive genes primary identified, 56...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811546/serum-derived-extracellular-vesicles-evs-impact-on-vascular-remodeling-and-prevent-muscle-damage-in-acute-hind-limb-ischemia
#20
Claudia Cavallari, Andrea Ranghino, Marta Tapparo, Massimo Cedrino, Federico Figliolini, Cristina Grange, Valentina Giannachi, Paolo Garneri, Maria Chiara Deregibus, Federica Collino, Pietro Rispoli, Giovanni Camussi, Maria Felice Brizzi
Serum is an abundant and accessible source of circulating extracellular vesicles (EVs). Serum-EV (sEV) pro-angiogenic capability and mechanisms are herein analyzed using an in vitro assay which predicts sEV angiogenic potential in vivo. Effective sEVs (e-sEVs) also improved vascular remodeling and prevented muscle damage in a mouse model of acute hind limb ischemia. e-sEV angiogenic proteomic and transcriptomic analyses show a positive correlation with matrix-metalloproteinase activation and extracellular matrix organization, cytokine and chemokine signaling pathways, Insulin-like Growth Factor and platelet pathways, and Vascular Endothelial Growth Factor signaling...
August 15, 2017: Scientific Reports
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