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Transcription regulation

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https://www.readbyqxmd.com/read/28340426/porcine-parvovirus-induces-activation-of-nf-%C3%AE%C2%BAb-signaling-pathways-in-pk-15-cells-mediated-by-toll-like-receptors
#1
Liyan Cao, Jianfei Chen, Yanwu Wei, Hongyan Shi, Xin Zhang, Jing Yuan, Da Shi, Jianbo Liu, Xiangdong Zhu, Xin Wang, Shangjin Cui, Li Feng
Porcine parvovirus (PPV) is a pathogenic factor that primarily induces severe reproductive failure of pregnant swine, which results in extensive losses to the swine industry worldwide. In this study, a potential mechanism of PPV-induced activation of the nuclear transcription factor-kappaB (NF-κB) by infection in porcine kidney cells (PK-15) was elucidated for the first time. The subcellular localization of p65 analyzed by immunofluorescence assay (IFA) showed that PPV infection induced p65 translocation from the cytoplasm to the nucleus...
March 21, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28340408/ongoing-evolution-of-pseudomonas-aeruginosa-pao1-sublines-complicates-studies-of-dna-damage-repair-and-tolerance
#2
Julia Sidorenko, Tatjana Jatsenko, Maia Kivisaar
Sublines of the major P. aeruginosa reference strain PAO1 are derivatives of the original PAO1 isolate, which are maintained in laboratories worldwide. These sublines display substantial genomic and phenotypic variation due to ongoing microevolution. Here, we examined four sublines, MPAO1, PAO1-L, PAO1-DSM and PAO1-UT, originated from different laboratories, and six DNA polymerase-deficient mutants from the P. aeruginosa MPAO1 transposon library for their employment in elucidation of DNA damage repair and tolerance mechanisms in P...
March 16, 2017: Mutation Research
https://www.readbyqxmd.com/read/28340330/same-same-but-different-the-evolution-of-tbp-in-archaea-and-their-eukaryotic-offspring
#3
Fabian Blombach, Dina Grohmann
Transcription factors TBP and TF(II)B assemble with RNA polymerase at the promoter DNA forming the initiation complex. Despite a high degree of conservation, the molecular binding mechanisms of archaeal and eukaryotic TBP and TF(II)B differ significantly. Based on recent biophysical data, we speculate how the mechanisms co-evolved with transcription regulation and TBP multiplicity.
February 8, 2017: Transcription
https://www.readbyqxmd.com/read/28340181/different-expression-patterns-of-sperm-motility-related-genes-in-testis-of-diploid-and-tetraploid-cyprinid-fish1
#4
Fangzhou Hu, Kang Xu, Yunfan Zhou, Chang Wu, Shi Wang, Jun Xiao, Min Wen, Rurong Zhao, Kaikun Luo, Min Tao, Wei Duan, Shaojun Liu
Sperm motility is an important standard to measure the fertility of male. In our previous study, we found that the diploid spermatozoa from allotetraploid hybrid (4nAT) had longer durations of rapid and slow progressive motility than haploid spermatozoa from common carp (COC). In this study, to explore sperm motility-related molecular mechanisms, we compared the testis tissues transcriptomes from two years old male COC and 4nAT. The RNA-seq data revealed that 2985 genes were differentially expressed between COC and 4nAT, including 2216 up-regulated and 769 down-regulated genes in 4nAT...
March 7, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28340115/cellular-senescence-in-mouse-hippocampus-after-irradiation-and-the-role-of-p53-and-p21
#5
Zoey Cheng, Yan Zhen Zheng, Yu-Qing Li, C Shun Wong
Diverse stress signals including irradiation may trigger cellular senescence. We asked whether irradiation induced senescence in mouse hippocampus, and whether p53 or p21 played a role in this response. Following whole-brain irradiation, polymerase chain reaction (PCR) arrays for senescence-associated genes showed increased expression of CDKN1A (p21) and CDKN2A (p19ARF) in mouse hippocampus at 9 weeks. Upregulation of p21 and p19ARF was confirmed using real-time PCR, which also demonstrated increased CDKN2A/p16INKa expression after irradiation...
March 14, 2017: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/28340094/nlrp2-is-a-suppressor-of-nf-%C3%A6-b-signaling-and-hla-c-expression-in-human-trophoblasts
#6
Tamara Tilburgs, Torsten B Meissner, Leonardo M R Ferreira, Arend Mulder, Kiran Musunuru, Junqiang Ye, Jack L Strominger
During human pregnancy, fetal extravillous trophoblasts (EVT) play a key role in the regulation of maternal T cell and NK cell responses. EVT display a unique combination of Human Leukocyte Antigens (HLA); EVT do not express HLA-A and HLA-B, but do express HLA-C, HLA-E and HLA-G. The mechanisms establishing this unique HLA expression pattern have not been fully elucidated. The MHC class I and class II transcriptional activators NLRC5 and CIITA are expressed neither by EVT nor by the EVT model cell line JEG3, which has an MHC expression pattern identical to that of EVT...
March 7, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28339981/transcriptome-analysis-of-comb-and-testis-from-rose-comb-silky-chicken-r1-r1-and-beijing-fatty-wild-type-chicken-r-r
#7
Y Wang, J Li, C Feng, Y Zhao, X Hu, N Li
Rose-comb was one of the chicken comb-variants first used by Bateson and Punnet in 1902 to demonstrate Mendelian inheritance in animals. Rose-comb is a monogenic trait that has been widely described in chickens. It is caused by a large structural rearrangement that leads to mis-expression of transcription factor MNR2 on chromosome 7. Rose-comb has pleiotropic effects in homozygous roosters, which is associated with poor sperm mobility. It was postulated that this is caused by the disruption of the CCDC108 gene located at the distal inversion breakpoint...
March 2, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339833/vdac1-is-a-molecular-target-in-glioblastoma-with-its-depletion-leading-to-reprogrammed-metabolism-and-reversed-oncogenic-properties
#8
Tasleem Arif, Yakov Kerlin, Itay Nakdimon, Daniel Benharroch, Avijit Paul, Daniela Dadon-Klein, Varda Shoshan-Barmatz
Background.: Glioblastoma (GBM), an aggressive brain tumor with frequent relapses and a high mortality, still awaits an effective treatment. Like many cancers, GBM cells acquire oncogenic properties, including metabolic reprogramming, vital for growth. As such, tumor metabolism is an emerging avenue for cancer therapy. One relevant target is the voltage-dependent anion channel 1 (VDAC1), a mitochondrial protein controlling cell energy and metabolic homeostasis. Methods...
February 28, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28339768/the-transcription-factor-olig2-is-important-for-the-biology-of-diffuse-intrinsic-pontine-gliomas
#9
Jane L Anderson, Ranjithmenon Muraleedharan, Nicole Oatman, Amanda Klotter, Satarupa Sengupta, Ronald R Waclaw, Jianqiang Wu, Rachid Drissi, Lili Miles, Eric H Raabe, Matthew L Weirauch, Maryam Fouladi, Lionel M Chow, Lindsey Hoffman, Mariko DeWire, Biplab Dasgupta
Background.: Diffuse intrinsic pontine glioma (DIPG) is a high-grade brainstem glioma of children with dismal prognosis. There is no single unifying model about the cell of origin of DIPGs. Proliferating cells in the developing human and mouse pons, the site of DIPGs, express neural stem/progenitor cell (NPC) markers, including Sox2, nestin, vimentin, Olig2, and glial fibrillary acidic protein, in an overlapping and non-overlapping manner, suggesting progenitor cell heterogeneity in the pons...
February 23, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28339741/shear-stress-regulated-mir-27b-controls-pericyte-recruitment-by-repressing-sema6a-and-sema6d
#10
Shemsi Demolli, Anuradha Doddaballapur, Kavi Devraj, Konstantin Stark, Yosif Manavski, Annekathrin Eckart, Christoph Zehendner, Tina Lucas, Thomas Korff, Markus Hecker, Steffen Massberg, Stefan Liebner, David Kaluza, Reinier A Boon, Stefanie Dimmeler
Aims: Vessel maturation involves the recruitment of mural cells such as pericytes and smooth muscle cells. Laminar shear stress is a major trigger for vessel maturation, but the molecular mechanisms by which shear stress affects recruitment of pericytes are unclear. MicroRNAs (miRs) are small non-coding RNAs, which post-transcriptionally control gene expression. The aim of the present study was to unveil the mechanism by which shear stress-regulated microRNAs contribute to vessel maturation...
February 23, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28339731/obesity-associated-cardiac-pathogenesis-in-broiler-breeder-hens-development-of-metabolic-cardiomyopathy2-3
#11
C Y Chen, Y F Huang, Y J Ko, Y J Liu, Y H Chen, R L Walzem, S E Chen
Feed intake is typically restricted (R) in broiler hens to avoid obesity and improve egg production and livability. To determine whether improved heart health contributes to improved livability, fully adult 45-week-old R hens were allowed to consume feed to appetite (ad libitum; AL) up to 10 wk (70 d). Mortality, contractile functions, and morphology at 70 d, and measurements of cardiac hypertrophic remodeling at 7 d and 21 d were made and compared between R and AL hens. Outcomes for cardiac electrophysiology and mortality, reported separately, found increased mortality in AL hens in association with cardiac pathological hypertrophy and contractile dysfunction...
February 22, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339712/effect-of-chinese-herbal-medicine-treatment-on-plasma-lipid-profile-and-hepatic-lipid-metabolism-in-hetian-broiler
#12
Z Xie, J Zhang, S Ma, X Huang, Y Huang
The purpose of this study was to investigate whether adding a Chinese herbal hedicine (CHM, including astragalus membranaceus, codonopsis pilosula, poria cocos, bighead atractylodes rhizome, fructus crataegi, folium epimedii, radix saposhnikoviae, and pericarpium citri reticulatae) diet has effects on lipid metabolism in the liver of the broiler. Six-hundred-thirty Hetian broilers were divided into 3 groups including base diet (control), 0.3%, or 1% CHM diets, for 130 days. The results showed that CHM treatment significantly increased the slaughter performance...
February 21, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339625/cystatin-s-a-candidate-biomarker-for-severity-of-submandibular-gland-involvement-in-sj%C3%A3-gren-s-syndrome
#13
Daniela Martini, Alessia Gallo, Serena Vella, Francesca Sernissi, Antonella Cecchettini, Nicoletta Luciano, Enza Polizzi, Pier Giulio Conaldi, Marta Mosca, Chiara Baldini
Objectives.: Salivary cystatin S is a defence protein mainly produced by submandibular glands and involved in innate oral immunity. This study aimed to verify whether cystatin S was diversely expressed in different disease subsets of primary Sjogren's syndrome (pSS) patients, defined on the basis of salivary flow [unstimulated salivary flow rate (USFR)], minor salivary gland (MSG) focus score and submandibular gland ultrasonography abnormalities. We also evaluated miR-126 and miR-335-5p expression in MSG biopsies to verify whether an aberrant regulation of cystatin S at the glandular level may influence its salivary expression...
February 16, 2017: Rheumatology
https://www.readbyqxmd.com/read/28339425/potential-role-of-the-ovol1-ovol2-axis-and-c-myc-in-the-progression-of-cutaneous-squamous-cell-carcinoma
#14
Takamichi Ito, Gaku Tsuji, Fumitaka Ohno, Takeshi Nakahara, Hiroshi Uchi, Masutaka Furue
OVOL1 and OVOL2 are ubiquitously conserved genes encoding C2H2 zinc-finger transcription factors in mammals. They promote epithelial cell proliferation, differentiation, and mesenchymal-to-epithelial transition, coordinately mediated via the Wnt signaling pathway. We previously reported that human OVOL1 and OVOL2 were preferentially expressed in the normal epidermis and hair follicles as well as their tumors, and found that OVOL1 is upregulated in Bowen's disease and downregulated in cutaneous squamous cell carcinoma...
March 24, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28339196/discovery-of-a-small-molecule-degrader-of-bromodomain-and-extra-terminal-bet-proteins-with-picomolar-cellular-potencies-and-capable-of-achieving-tumor-regression
#15
Bing Zhou, Jiantao Hu, Fuming Xu, Zhuo Chen, Longchuan Bai, Ester Fernandez-Salas, Mei Lin, Liu Liu, Chao-Yie Yang, Yujun Zhao, Donna McEachern, Sally Przybranowski, Bo Wen, Duxin Sun, Shaomeng Wang
The bromodomain and extra-terminal (BET) family proteins, consisting of BRD2, BRD3, BRD4, and testis-specific BRDT members, are epigenetic "readers" and play a key role in the regulation of gene transcription. BET proteins are considered to be attractive therapeutic targets for cancer and other human diseases. Recently, heterobifunctional small-molecule BET degraders have been designed based upon the proteolysis targeting chimera (PROTAC) concept to induce BET protein degradation. Herein, we present our design, synthesis, and evaluation of a new class of PROTAC BET degraders...
March 24, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28335502/catechins-and-their-therapeutic-benefits-to-inflammatory-bowel-disease
#16
REVIEW
Fei-Yan Fan, Li-Xuan Sang, Min Jiang
Catechins are natural polyphenolic phytochemicals that exist in food and medicinal plants, such as tea, legume and rubiaceae. An increasing number of studies have associated the intake of catechins-rich foods with the prevention and treatment of chronic diseases in humans, such as inflammatory bowel disease (IBD). Some studies have demonstrated that catechins could significantly inhibit the excessive oxidative stress through direct or indirect antioxidant effects and promote the activation of the antioxidative substances such as glutathione peroxidases (GPO) and glutathione (GSH), reducing the oxidative damages to the colon...
March 19, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28335496/quantitative-analysis-of-the-kshv-transcriptome-following-primary-infection-of-blood-and-lymphatic-endothelial-cells
#17
A Gregory Bruce, Serge Barcy, Terri DiMaio, Emilia Gan, H Jacques Garrigues, Michael Lagunoff, Timothy M Rose
The transcriptome of the Kaposi's sarcoma-associated herpesvirus (KSHV/HHV8) after primary latent infection of human blood (BEC), lymphatic (LEC) and immortalized (TIME) endothelial cells was analyzed using RNAseq, and compared to long-term latency in BCBL-1 lymphoma cells. Naturally expressed transcripts were obtained without artificial induction, and a comprehensive annotation of the KSHV genome was determined. A set of unique coding sequence (UCDS) features and a process to resolve overlapping transcripts were developed to accurately quantitate transcript levels from specific promoters...
March 19, 2017: Pathogens
https://www.readbyqxmd.com/read/28335447/transcriptomic-complexity-of-aspergillus-terreus-velvet-gene-family-under-the-influence-of-butyrolactone-i
#18
Elina K Palonen, Sheetal Raina, Annika Brandt, Jussi Meriluoto, Tajalli Keshavarz, Juhani T Soini
Filamentous fungi of the Ascomycota phylum are known to contain a family of conserved conidiation regulating proteins with distinctive velvet domains. In Aspergilli, this velvet family includes four proteins, VeA, VelB, VelC and VosA, and is involved in conidiation and secondary metabolism along with a global regulator LaeA. In A. terreus, the overexpression of LaeA has been observed to increase the biogenesis of the pharmaceutically-important secondary metabolite, lovastatin, while the role of the velvet family has not been studied...
March 14, 2017: Microorganisms
https://www.readbyqxmd.com/read/28335084/identification-of-new-bmp6-pro-peptide-mutations-in-patients-with-iron-overload
#19
Chiara Piubelli, Annalisa Castagna, Giacomo Marchi, Monica Rizzi, Fabiana Busti, Sadaf Badar, Monia Marchetti, Marco De Gobbi, Antonella Roetto, Luciano Xumerle, Eda Suku, Alejandro Giorgetti, Massimo Delledonne, Oliviero Olivieri, Domenico Girelli
Hereditary Hemochromatosis (HH) is a genetically heterogeneous disorder caused by mutations in at least 5 different genes (HFE, HJV, TFR2, SLC40A1, HAMP) involved in the production or activity of the liver hormone hepcidin, a key regulator of systemic iron homeostasis. Nevertheless, patients with an HH-like phenotype that remains completely/partially unexplained despite extensive sequencing of known genes are not infrequently seen at referral centers, suggesting a role of still unknown genetic factors. A compelling candidate is Bone Morphogenetic Protein 6 (BMP6), which acts as a major activator of the BMP-SMAD signaling pathway, ultimately leading to the upregulation of hepcidin gene transcription...
March 23, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28335083/down-regulation-of-dab2ip-promotes-colorectal-cancer-invasion-and-metastasis-by-translocating-hnrnpk-into-nucleus-to-enhance-the-transcription-of-mmp2
#20
X H Zhu, J M Wang, S S Yang, F F Wang, J L Hu, S N Xin, H Men, G F Lu, X L Lan, D Zhang, X Y Wang, W T Liao, Y Q Ding, L Liang
DOC-2/DAB2 interacting protein (DAB2IP) is a RasGAP protein that shows a suppressive effect on cancer progression. Our previous study showed the involvement of transcription regulation of DAB2IP in metastasis of colorectal cancer (CRC). However, the molecular mechanisms of DAB2IP in regulating the progression of CRC need to be further explored. Here, we identified heterogeneous nuclear ribonucleoprotein K (hnRNPK) and matrix metalloproteinase 2 (MMP2) as vital downstream targets of DAB2IP in CRC cells by two-dimensional fluorescence difference gel electrophoresis and cDNA microassay, respectively...
March 23, 2017: International Journal of Cancer. Journal International du Cancer
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