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Replication Stress

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https://www.readbyqxmd.com/read/29222921/optimizing-rna-seq-studies-to-investigate-herbicide-resistance
#1
REVIEW
Darci A Giacomini, Todd Gaines, Roland Beffa, Patrick J Tranel
Transcriptomic profiling, specifically via RNA-seq, is becoming one of the more commonly used methods for investigating non-target site resistance (NTSR) to herbicides due to its high throughput capabilities and utility in organisms with little to no previous sequence information. A review of the weed science RNA-seq literature has revealed some basic principles behind generating quality data from these types of studies. First, studies that included more replicates per biotype and took steps to control for genetic background had significantly better control of false positives and, consequently, shorter lists of potential resistance genes to sift through...
December 9, 2017: Pest Management Science
https://www.readbyqxmd.com/read/29221184/hepatitis-b-virus-x-protein-inhibits-apoptosis-by-modulating-endoplasmic-reticulum-stress-response
#2
Jia Li, Jiang He, Yongming Fu, Xingwang Hu, Lun-Quan Sun, Yan Huang, Xuegong Fan
Chronic Hepatitis B virus (HBV) infection is a major risk of hepatocellular carcinoma (HCC) worldwide. Hepatitis B virus X protein (HBx) is encoded by one of the four open reading frames of HBV, and is well known as an important coactivator for HBV replication and HBV-associated hepatocellular carcinogenesis. However, its role in keeping cells from apoptosis to promote HCC proliferation remains controversial. Here, we used HBx expressing HCC cells as a model, to investigate the mechanism of HBx-mediated cellular response to endoplasmic reticulum (ER) stress...
November 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29220410/cleavage-of-osmosensitive-transcriptional-factor-nfat5-by-coxsackieviral-protease-2a-promotes-viral-replication
#3
Ye Qiu, Xin Ye, Huifang Mary Zhang, Paul Hanson, Guangze Zhao, Lei Tong, Ronald Xie, Decheng Yang
Nuclear factor of activated T cells 5 (NFAT5)/Tonicity enhancer binding protein (TonEBP) is a transcription factor induced by hypertonic stress in the kidney. However, the function of NFAT5 in other organs has rarely been studied, even though it is ubiquitously expressed. Indeed, although NFAT5 was reported to be critical for heart development and function, its role in infectious heart diseases has remained obscure. In this study, we aimed to understand the mechanism by which NFAT5 interferes with infection of Coxsackievirus B3 (CVB3), a major cause of viral myocarditis...
December 8, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/29219807/down-regulation-of-cellular-protein-heme-oxygenase-1-inhibits-proliferation-of-avian-influenza-virus-h9n2-in-chicken-oviduct-epithelial-cells
#4
Xuefeng Qi, Huizhu Zhang, Tianxia Xue, Bo Yang, Meiyu Deng, Jingyu Wang
The pathogenesis of H9N2 subtype avian influenza virus (AIV) infection in hens is often related to oviduct tissue damage. Our previous study suggested that H9N2 AIV induces cellular apoptosis by activating reactive oxygen species (ROS) accumulation and mitochondria-mediated apoptotic signalling in chicken oviduct epithelial cells (COECs). Heme oxygenase-1 (HO-1) is an inducible enzyme that exerts protective effects against oxidative stress and activated HO-1 was recently shown to have antiviral activity. To study the potential involvement of HO-1 in H9N2 AIV proliferation, the role of its expression in H9N2-infected COECs was further investigated...
December 8, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/29217185/selenizing-astragalus-polysaccharide-attenuates-pcv2-replication-promotion-caused-by-oxidative-stress-through-autophagy-inhibition-via-pi3k-akt-activation
#5
Dandan Liu, Jing Xu, Gang Qian, Mohammed Hamid, Fang Gan, Xingxiang Chen, Kehe Huang
Our previous studies have shown that oxidative stress could promote the porcine circovirus type 2 (PCV2) replication, and astragalus polysaccharide (APS)/selenium could suppress PCV2 replication. However, whether selenizing astragalus polysaccharide (sAPS) provides protection against oxidative stress-induced PCV2 replication promotion and the mechanism involved remain unclear. The present study aimed to explore the mechanism of the PCV2 replication promotion induced by oxidative stress and a novel pharmacotherapeutic approach involving the regulation of autophagy of sAPS...
December 4, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29215751/proteomic-response-of-the-rat-liver-in-differential-swimming-modes
#6
Liang Chen, Yanhua Yang, Yiting Wang, Lipeng Qiu, Hengchuan Xia, Aiai Wang, Hailong Liu, Hongfei Shi, Keping Chen
Moderate exercise helps improve competition results, providing a balanced muscle tone and biochemical activity, whereas excessive training disrupts the balance between training and recovery, causes harm to the organism, and leads to overtraining syndrome (OTS). To explore the mechanisms of different protein expressions during training and acquisition of immunity, we used proteomic analyses to investigate the differences of liver-protein expressions between two swimming modes. Sprague-Dawley rats were randomly divided into control (CT), fatigue training (FT), and exhaustive training (ET) groups, and liver tissues from each group were subjected to two-dimensional electrophoresis (2DE)...
December 7, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/29215737/nitric-oxide-as-a-signaling-molecule-in-brassinosteroid-mediated-virus-resistance-to-cucumber-mosaic-virus-in-arabidopsis-thaliana
#7
Li-Juan Zou, Xing-Guang Deng, Li-E Zhang, Tong Zhu, Wen-Rong Tan, Arfan Muhammad, Li-Jun Zhu, Chao Zhang, Da-Wei Zhang, Hong-Hui Lin
Brassinosteroids (BRs) are growth-promoting plant hormones that play a crucial role in biotic stress responses. Here, we found that BR treatment increased nitric oxide (NO) accumulation, and a significant reduction of virus accumulation in Arabidopsis thaliana. However, the plants pre-treated with NO scavenger (PTIO) or nitrate reductase (NR) inhibitor (tungstate) were hardly generated NO generation and appeared to have the highest viral replication and suffer more damages. Furthermore, the antioxidant system and photosystem parameters were up-regulated in brassinolide (BL) - treated plants but down regulated in PTIO- or tungstate-treated plants, suggesting NO may be involved in BRs induced virus resistance in Arabidopsis...
December 7, 2017: Physiologia Plantarum
https://www.readbyqxmd.com/read/29214748/alterations-in-the-in-vitro-and-in-vivo-regulation-of-muscle-regeneration-in-healthy-ageing-and-the-influence-of-sarcopenia
#8
Joanna Brzeszczyńska, Angelika Meyer, Robin McGregor, Alain Schilb, Simone Degen, Valentina Tadini, Neil Johns, Ramon Langen, Annemie Schols, David J Glass, Ronenn Roubenoff, James A Ross, Kenneth C H Fearon, Carolyn A Greig, Carsten Jacobi
BACKGROUND: Sarcopenia is defined as the age-related loss of skeletal muscle mass and function. While all humans lose muscle with age, 2-5% of elderly adults develop functional consequences (disabilities). The aim of this study was to investigate muscle myogenesis in healthy elderly adults, with or without sarcopenia, compared with middle-aged controls using both in vivo and in vitro approaches to explore potential biomarker or causative molecular pathways associated with sarcopenic versus non-sarcopenic skeletal muscle phenotypes during ageing...
December 6, 2017: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/29213341/ciapex2-and-cip0-candidates-of-ap-endonucleases-in-ciona-intestinalis-have-3-5-exonuclease-activity-and-contribute-to-protection-against-oxidative-stress
#9
Masafumi Funakoshi, Daisuke Nambara, Yuichiro Hayashi, Qiu-Mei Zhang-Akiyama
Apurinic/apyrimidinic (AP) sites are one of the most frequent DNA lesions. AP sites inhibit transcription and DNA replication, and induce cell death. AP endonucleases are key enzymes in AP site repair. Several types of AP endonucleases have been reported, such as AP endonuclease 2 (APEX2) and ribosomal protein P0 (P0). However, it is not known how the functions and roles differ among AP endonucleases. To clarify the difference of roles among AP endonucleases, we conducted biochemical analysis focused on APEX2 and P0 homologues in Ciona intestinalis...
2017: Genes and Environment: the Official Journal of the Japanese Environmental Mutagen Society
https://www.readbyqxmd.com/read/29211867/effects-of-corn-dried-distillers-grains-with-solubles-on-performance-egg-quality-yolk-fatty-acid-composition-and-oxidative-status-in-laying-ducks
#10
D Ruan, A M Fouad, Q L Fan, W Chen, W G Xia, S Wang, Y Y Cui, Y Wang, L Yang, C T Zheng
The study investigated the effects of increasing content of corn distillers' dried grains with solubles (DDGS) in the diets of laying ducks on oxidative status, laying performance, egg quality, and egg yolk fatty acid composition. Longyan females (1080) with similar BW at 17 wk of age were randomly assigned to 6 treatment groups, each consisting of 6 replicates of 30 birds. The basal diet (I) was a typical corn-soybean ration while the experimental diets (II to VI) substituted corn DDGS for soybean meal and wheat bran and a small reduction of corn...
November 29, 2017: Poultry Science
https://www.readbyqxmd.com/read/29209649/breaking-the-end-target-the-replication-stress-response-at-the-alt-telomeres-for-cancer-therapy
#11
Xiaolei Pan, Naveed Ahmed, Joyce Kong, Dong Zhang
We recently reported that depletion of FANCM in ALT cells induces replication stress mainly at their telomeres. Additionally, we found that co-depletion of FANCM and BLM, or FANCM and BRCA1 induces synthetic lethality in the ALT cells. Our new findings could have important implications for cancer prevention and treatment.
2017: Molecular & Cellular Oncology
https://www.readbyqxmd.com/read/29209254/psychometric-properties-of-multi-dimensional-scale-of-perceived-social-support-in-chinese-parents-of-children-with-cerebral-palsy
#12
Yongli Wang, Qin Wan, Zhaoming Huang, Li Huang, Feng Kong
The Multi-dimensional Scale of Perceived Social Support (MSPSS) is one of the most extensively used instruments to assess social support. The purpose of this research was to test the reliability, factorial validity, concurrent validity and measurement invariance across gender groups of the MSPSS in Chinese parents of children with cerebral palsy. A total of 487 participants aged 21-55 years were recruited to complete the Chinese MSPSS and Parenting Stress Index-Short Form (PSI-SF). Composite reliability was calculated as the internal consistency of the Chinese MSPSS and a (multi-group) confirmatory factor analysis (CFA) was conducted to test the factorial validity and measurement invariance across gender...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/29209046/cdc7-dbf4-mediated-phosphorylation-of-hsp90-s164-stabilizes-hsp90-hclk2-mrn-complex-to-enhance-atr-atm-signaling-that-overcomes-replication-stress-in-cancer
#13
An Ning Cheng, Chi-Chen Fan, Yu-Kang Lo, Cheng-Liang Kuo, Hui-Chun Wang, I-Hsin Lien, Shu-Yu Lin, Chung-Hsing Chen, Shih Sheng Jiang, I-Shou Chang, Hsueh-Fen Juan, Ping-Chiang Lyu, Alan Yueh-Luen Lee
Cdc7-Dbf4 kinase plays a key role in the initiation of DNA replication and contributes to the replication stress in cancer. The activity of human Cdc7-Dbf4 kinase remains active and acts as an effector of checkpoint under replication stress. However, the downstream targets of Cdc7-Dbf4 contributed to checkpoint regulation and replication stress-support function in cancer are not fully identified. In this work, we showed that aberrant Cdc7-Dbf4 induces DNA lesions that activate ATM/ATR-mediated checkpoint and homologous recombination (HR) DNA repair...
December 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29208544/mandibuloacral-dysplasia-a-premature-ageing-disease-with-aspects-of-physiological-ageing
#14
REVIEW
Vittoria Cenni, Maria Rosaria D'Apice, Paolo Garagnani, Marta Columbaro, Giuseppe Novelli, Claudio Franceschi, Giovanna Lattanzi
Mandibuloacral dysplasia (MAD) is a rare genetic condition characterized by bone abnormalities including localized osteolysis and generalized osteoporosis, skin pigmentation, lipodystrophic signs and mildly accelerated ageing. The molecular defects associated with MAD are mutations in LMNA or ZMPSTE24 (FACE1) gene, causing type A or type B MAD, respectively. Downstream of LMNA or ZMPSTE24 mutations, the lamin A precursor, prelamin A, is accumulated in cells and affects chromatin dynamics and stress response...
December 2, 2017: Ageing Research Reviews
https://www.readbyqxmd.com/read/29207577/replication-stress-in-colorectal-cancer-stem-cells
#15
EDITORIAL
Gwenola Manic, Ruggero De Maria, Ilio Vitale
No abstract text is available yet for this article.
October 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/29206201/selection-on-the-major-color-gene-melanocortin-1-receptor-shaped-the-evolution-of-the-melanocortin-system-genes
#16
Linda Dib, Luis M San-Jose, Anne-Lyse Ducrest, Nicolas Salamin, Alexandre Roulin
Modular genetic systems and networks have complex evolutionary histories shaped by selection acting on single genes as well as on their integrated function within the network. However, uncovering molecular coevolution requires the detection of coevolving sites in sequences. Detailed knowledge of the functions of each gene in the system is also necessary to identify the selective agents driving coevolution. Using recently developed computational tools, we investigated the effect of positive selection on the coevolution of ten major genes in the melanocortin system, responsible for multiple physiological functions and human diseases...
December 5, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29206178/around-and-beyond-53bp1-nuclear-bodies
#17
REVIEW
Anne Fernandez-Vidal, Julien Vignard, Gladys Mirey
Within the nucleus, sub-nuclear domains define territories where specific functions occur. Nuclear bodies (NBs) are dynamic structures that concentrate nuclear factors and that can be observed microscopically. Recently, NBs containing the p53 binding protein 1 (53BP1), a key component of the DNA damage response, were defined. Interestingly, 53BP1 NBs are visualized during G1 phase, in daughter cells, while DNA damage was generated in mother cells and not properly processed. Unlike most NBs involved in transcriptional processes, replication has proven to be key for 53BP1 NBs, with replication stress leading to the formation of these large chromatin domains in daughter cells...
December 5, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29199638/volatile-fingerprinting-of-human-respiratory-viruses-from-cell-culture
#18
Giorgia Purcaro, Christiaan Rees, Wendy Wieland-Alter, Mark J Schneider, Xi Wang, Pierre-Hugues Stefanuto, Peter F Wright, Richard I Enelow, Jane E Hill
Volatile metabolites are currently under investigation as potential biomarkers for the detection and identification of pathogenic microorganisms, including bacteria, fungi, and viruses. Unlike bacteria and fungi, which produce distinct volatile metabolic signatures associated with innate differences in both primary and secondary metabolic processes, viruses are wholly reliant on the metabolic machinery of infected cells for replication and propagation. In the present study, the ability of volatile metabolites to discriminate between respiratory cells infected and uninfected with virus, in vitro, was investigated...
December 4, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/29197929/transdiagnostic-symptom-clusters-and-associations-with-brain-behavior-and-daily-function-in-mood-anxiety-and-trauma-disorders
#19
Katherine A Grisanzio, Andrea N Goldstein-Piekarski, Michelle Yuyun Wang, Abdullah P Rashed Ahmed, Zoe Samara, Leanne M Williams
Importance: The symptoms that define mood, anxiety, and trauma disorders are highly overlapping across disorders and heterogeneous within disorders. It is unknown whether coherent subtypes exist that span multiple diagnoses and are expressed functionally (in underlying cognition and brain function) and clinically (in daily function). The identification of cohesive subtypes would help disentangle the symptom overlap in our current diagnoses and serve as a tool for tailoring treatment choices...
December 3, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/29196784/parp1-protects-from-benzo-a-pyrene-diol-epoxide-induced-replication-stress-and-mutagenicity
#20
Jan M F Fischer, Tabea Zubel, Kirsten Jander, Jelena Fix, Irmela R E A Trussina, Daniel Gebhard, Jörg Bergemann, Alexander Bürkle, Aswin Mangerich
Poly(ADP-ribosyl)ation (PARylation) is a complex and reversible posttranslational modification catalyzed by poly(ADP-ribose)polymerases (PARPs), which orchestrates protein function and subcellular localization. The function of PARP1 in genotoxic stress response upon induction of oxidative DNA lesions and strand breaks is firmly established, but its role in the response to chemical-induced, bulky DNA adducts is understood incompletely. To address the role of PARP1 in the response to bulky DNA adducts, we treated human cancer cells with benzo[a]pyrene 7,8-dihydrodiol-9,10-epoxide (BPDE), which represents the active metabolite of the environmental carcinogen benzo[a]pyrene [B(a)P], in nanomolar to low micromolar concentrations...
December 1, 2017: Archives of Toxicology
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