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https://www.readbyqxmd.com/read/29018874/flavocoxid-exerts-a-potent-antiviral-effect-against-hepatitis-b-virus
#1
Teresa Pollicino, Cristina Musolino, Natasha Irrera, Alessandra Bitto, Daniele Lombardo, Martina Timmoneri, Letteria Minutoli, Giovanni Raimondo, Giovanni Squadrito, Francesco Squadrito, Domenica Altavilla
INTRODUCTION: Flavocoxid is a proprietary blend of two flavonoids, baicalin and catechin, and recent evidence has shown that bioflavonoids may exert antiviral activities. The potential antiviral activity of Flavocoxid against hepatitis B virus (HBV) was evaluated. Additionally, it was investigated if Flavocoxid used in combination with Entecavir could potentiate its anti-HBV activity. MATERIALS AND METHODS: Hepatoma cells replicating HBV were treated with Flavocoxid, or Entecavir alone or in combination for up to 5 days...
October 10, 2017: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/29017848/suppression-of-cotton-leaf-curl-disease-symptoms-in-gossypium-hirsutum-through-over-expression-of-host-encoded-mirnas
#2
Mohd Akmal, Mirza S Baig, Jawaid A Khan
Cotton leaf curl disease (CLCuD), a major factor resulting in the enormous yield losses in cotton crop, is caused by a distinct monopartite begomovirus in association with Cotton leaf curl Multan betasatellite (CLCuMB). Micro(mi)RNAs are known to regulate gene expression in eukaryotes, including antiviral defense in plants. In a previous study, we had computationally identified a set of cotton miRNAs, which were shown to have potential targets in the genomes of Cotton leaf curl Multan virus (CLCuMuV) and CLCuMB at multiple loci...
October 7, 2017: Journal of Biotechnology
https://www.readbyqxmd.com/read/28986679/a-novel-alphapartitivirus-detected-in-japanese-pear
#3
Hideki Osaki, Atsuko Sasaki
Pyrus pyrifolia cryptic virus (PpCV) had been previously reported from Japanese pear (Pyrus pyrifolia). In analyses of Japanese pear, two other double-stranded (ds) RNA molecules (dsRNA4 and 5) were observed along with the three dsRNA segments from PpCV on an electrophoretic profile of isolated dsRNA. When the purified dsRNA sample was deep sequenced by a next-generation sequencer, two de novo assembled contigs corresponding to dsRNA4 and 5, with predicted amino acid sequences showing homologies to the RNA-dependent RNA polymerase and the capsid protein of Rose partitivirus, respectively, were found by BLAST analysis...
October 6, 2017: Virus Genes
https://www.readbyqxmd.com/read/28974762/use-of-rnai-technology-to-develop-a-prsv-resistant-transgenic-papaya
#4
Ruizong Jia, Hui Zhao, Jing Huang, Hua Kong, Yuliang Zhang, Jingyuan Guo, Qixing Huang, Yunling Guo, Qing Wei, Jiao Zuo, Yun J Zhu, Ming Peng, Anping Guo
Papaya ringspot virus (PRSV) seriously limits papaya (Carica papaya L.) production in tropical and subtropical areas throughout the world. Coat protein (CP)- transgenic papaya lines resistant to PRSV isolates in the sequence-homology-dependent manner have been developed in the U.S.A. and Taiwan. A previous investigation revealed that genetic divergence among Hainan isolates of PRSV has allowed the virus to overcome the CP-mediated transgenic resistance. In this study, we designed a comprehensive RNAi strategy targeting the conserved domain of the PRSV CP gene to develop a broader-spectrum transgenic resistance to the Hainan PRSV isolates...
October 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28964816/quinalizarin-inhibits-adipogenesis-through-down-regulation-of-transcription-factors-and-microrna-modulation
#5
Lisa Schwind, Lisa Nalbach, Andreas D Zimmer, Katja B Kostelnik, Jennifer Menegatti, Friedrich Grässer, Claudia Götz, Mathias Montenarh
BACKGROUND: Protein kinase CK2 is induced early in adipogenesis whereas later on, this kinase seems to be dispensable. Here, we have analysed how CK2 might be involved in early steps of differentiation of 3T3-L1 cells. METHODS: 3T3-L1 cells were differentiated to adipocytes in the absence or presence of quinalizarin. The expression and localization of important transcription factors was analysed by Western blot and immunofluorescence. DNA binding capacity and transactivation was analysed with pull-down assays and with luciferase reporter experiments, respectively...
September 27, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28943874/a-genome-wide-prediction-and-identification-of-intergenic-small-rnas-by-comparative-analysis-in-mesorhizobium-huakuii-7653r
#6
Xie Fuli, Zhao Wenlong, Wang Xiao, Zhang Jing, Hao Baohai, Zou Zhengzheng, Ma Bin-Guang, Li Youguo
In bacteria, small non-coding RNAs (sRNAs) are critical regulators of cellular adaptation to changes in metabolism, physiology, or the external environment. In the last decade, more than 2000 of sRNA families have been reported in the Rfam database and have been shown to exert various regulatory functions in bacterial transcription and translation. However, little is known about sRNAs and their functions in Mesorhizobium. Here, we predicted putative sRNAs in the intergenic regions (IGRs) of M. huakuii 7653R by genome-wide comparisons with four related Mesorhizobial strains...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28932224/shrimp-mir-10a-is-co-opted-by-white-spot-syndrome-virus-to-increase-viral-gene-expression-and-viral-replication
#7
Jiun-Yan Huang, Shih-Ting Kang, I-Tung Chen, Li-Kwan Chang, Shih-Shun Lin, Guang-Hsiung Kou, Chia-Ying Chu, Chu-Fang Lo
Members of the microRNA miR-10 family are highly conserved and play many important roles in diverse biological mechanisms, including immune-related responses and cancer-related processes in certain types of cancer. In this study, we found the most highly upregulated shrimp microRNA from Penaeus vannamei during white spot syndrome virus (WSSV) infection was miR-10a. After confirming the expression level of miR-10a by northern blot and quantitative RT-PCR, an in vivo experiment showed that the viral copy number was decreased in miR-10a-inhibited shrimp...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28924050/discovery-of-leucokinin-like-neuropeptides-that-modulate-a-specific-parameter-of-feeding-motor-programs-in-the-molluscan-model-aplysia
#8
Guo Zhang, Ferdinand S Vilim, Dan-Dan Liu, Elena V Romanova, Ke Yu, Wang-Ding Yuan, Hui Xiao, Amanda B Hummon, Ting-Ting Chen, Vera Alexeeva, Si-Yuan Yin, Song-An Chen, Elizabeth C Cropper, Jonathan V Sweedler, Klaudiusz R Weiss, Jian Jing
A better understanding of neuromodulation in a behavioral system requires identifying active modulatory transmitters. Here, we used identifiable neurons in a neurobiological model system, the mollusc Aplysia, to study neuropeptides, a diverse class of neuromodulators. We took advantage of two types of feeding neurons, B48 and B1/B2, in the Aplysia buccal ganglion that might contain different neuropeptides. We performed a representational difference analysis (RDA) by subtraction of mRNAs in B48 versus mRNA in B1/B2...
September 18, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28923134/%C3%A3-1-3-galactosyl-o-glycosyl-glycoprotein-%C3%A3-1-6-n-acetylglucosaminyltransferase-3-increases-mcam-stability-which-enhances-s100a8-a9-mediated-cancer-motility
#9
I Wayan Sumardika, Chen Youyi, Eisaku Kondo, Yusuke Inoue, I Made Winarsa Ruma, Hitoshi Murata, Rie Kinoshita, Ken-Ichi Yamamoto, Shuta Tomida, Kazuhiko Shien, Hiroki Satoh, Akira Yamauchi, Junichiro Futami, Endy Widya Putranto, Toshihiko Hibino, Shinichi Toyooka, Masahiro Nishibori, Masakiyo Sakaguchi
We previously identified novel S100A8/A9 receptors, Extracellular Matrix Metalloproteinase Inducer (EMMPRIN), MelanomaCell Adhesion Molecule (MCAM), Activated Leukocyte Cell Adhesion Molecule (ALCAM) and Neuroplastin (NPTN) ß, that are critically involved in S100A8/A9-mediated cancer metastasis and inflammation when expressed at high levels. However, little is known about the presence of any cancerspecific mechanism(s) that modifies these receptors, further inducing upregulation at protein levels without any transcriptional regulation...
September 18, 2017: Oncology Research
https://www.readbyqxmd.com/read/28919888/the-sporothrix-schenckii-gene-encoding-for-the-ribosomal-protein-l6-has-constitutive-and-stable-expression-and-works-as-an-endogenous-control-in-gene-expression-analysis
#10
Elías Trujillo-Esquivel, José A Martínez-Álvarez, Diana M Clavijo-Giraldo, Nahúm V Hernández, Alberto Flores-Martínez, Patricia Ponce-Noyola, Héctor M Mora-Montes
Sporothrix schenckii is one of the causative agents of sporotrichosis, a worldwide-distributed mycosis that affects humans and other mammals. The interest in basic and clinical features of this organism has significantly increased in the last years, yet little progress in molecular aspects has been reported. Gene expression analysis is a set of powerful tools that helps to assess the cell response to changes in the extracellular environment, the genetic networks controlling metabolic pathways, and the adaptation to different growth conditions...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28903484/novel-role-of-fbxw7-circular-rna-in-repressing-glioma-tumorigenesis
#11
Yibing Yang, Xinya Gao, Maolei Zhang, Sheng Yan, Chengjun Sun, Feizhe Xiao, Nunu Huang, Xuesong Yang, Kun Zhao, Huangkai Zhou, Suyun Huang, Bo Xie, Nu Zhang
Background: Circular RNAs (circRNAs) are RNA transcripts that are widespread in the eukaryotic genome. Recent evidence indicates that circRNAs play important roles in tissue development, gene regulation, and carcinogenesis. However, whether circRNAs encode functional proteins remains elusive, although translation of several circRNAs was recently reported. Methods: CircRNA deep sequencing was performed by using 10 pathologically diagnosed glioblastoma samples and their paired adjacent normal brain tissues...
March 1, 2018: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/28889309/identification-of-c-di-gmp-responsive-riboswitches
#12
Johann Peltier, Olga Soutourina
Bis-(3'-5')-cyclic dimeric guanosine monophosphate (c-di-GMP) is an important signaling molecule for community behavior control, cell morphogenesis, and virulence in bacteria. In addition to protein effectors, this second messenger binds RNA molecules that act as riboswitches to control target gene expression. In this chapter, we describe a method for experimental validation of the functionality of c-di-GMP-responsive riboswitches and the analysis of c-di-GMP control of target gene expression by qRT-PCR and Northern blot...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28881438/host-induced-gene-silencing-of-an-important-pathogenicity-factor-pscpk1-in-puccinia-striiformis-f-sp-tritici-enhances-resistance-of-wheat-to-stripe-rust
#13
Tuo Qi, Xiaoguo Zhu, Chenlong Tan, Peng Liu, Jia Guo, Zhensheng Kang, Jun Guo
Rust fungi are devastating plant pathogens and cause a large economic impact on wheat production worldwide. To overcome this rapidly loss of varieties resistance, we generated stable transgenic wheat plants expressing short interfering RNAs (siRNAs) targeting potentially vital genes of Puccinia striiformis f. sp. tritici (Pst). Protein kinase A (PKA) has been proved to play important roles in regulating the virulence of phytopathogenic fungi. PsCPK1, a PKA catalytic subunit gene from Pst, is highly induced at the early infection stage of Pst...
September 7, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28877679/micrornas-participate-in-gene-expression-regulation-and-phytohormone-cross-talk-in-barley-embryo-during-seed-development-and-germination
#14
Bin Bai, Bo Shi, Ning Hou, Yanli Cao, Yijun Meng, Hongwu Bian, Muyuan Zhu, Ning Han
BACKGROUND: Small RNA and degradome sequencing have identified a large number of miRNA-target pairs in plant seeds. However, detailed spatial and temporal studies of miRNA-mediated regulation, which can reflect links between seed development and germination are still lacking. RESULTS: In this study, we extended our investigation on miRNAs-involved gene regulation by a combined analysis of seed maturation and germination in barley. Through bioinformatics analysis of small RNA sequencing data, a total of 1324 known miRNA families and 448 novel miRNA candidates were identified...
September 6, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28873013/involvement-of-the-specific-nucleolar-protein-surf6-in-regulation-of-proliferation-and-ribosome-biogenesis-in-mouse-nih-3t3-fibroblasts
#15
Anastasiia Moraleva, Charalambos Magoulas, Mikhail Polzikov, Sabine Hacot, Hichem C Mertani, Jean-Jacques Diaz, Olga Zatsepina
The nucleolar proteins which link cell proliferation to ribosome biogenesis are regarded to be potentially oncogenic. Here, in order to examine the involvement of an evolutionary conserved nucleolar protein SURF6/Rrp14 in proliferation and ribosome biogenesis in mammalian cells, we established stably transfected mouse NIH/3T3 fibroblasts capable of conditional overexpression of the protein. Cell proliferation was monitored in real-time, and various cell cycle parameters were quantified based on flow cytometry, Br-dU-labeling and conventional microscopy data...
October 18, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28872118/quantification-of-the-abundance-and-charging-levels-of-transfer-rnas-in-escherichia-coli
#16
Thomas Søndergaard Stenum, Michael A Sørensen, Sine Lo Svenningsen
Transfer RNA (tRNA) is an essential part of the translational machinery in any organism. tRNAs bind and transfer amino acids to the translating ribosome. The relative levels of different tRNAs, and the ratio of aminoacylated tRNA to total tRNA, known as the charging level, are important factors in determining the accuracy and speed of translation. Therefore, the abundance and charging levels of tRNAs are important variables to measure when studying protein synthesis, for example under various stress conditions...
August 22, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28862744/increased-metabolite-production-by-deletion-of-an-hda1-type-histone-deacetylase-in-the-phytopathogenic-fungi-magnaporthe-oryzae-pyricularia-oryzae-and-fusarium-asiaticum
#17
K Maeda, M Izawa, Y Nakajima, Q Jin, T Hirose, T Nakamura, H Koshino, K Kanamaru, S Ohsato, T Kamakura, T Kobayashi, M Yoshida, M Kimura
Histone deacetylases (HDACs) play an important role in the regulation of chromatin structure and gene expression. We found that dark pigmentation of Magnaporthe oryzae (anamorph Pyricularia oryzae) ΔMohda1, a mutant strain in which an orthologue of the yeast HDA1 was disrupted by double cross-over homologous recombination, was significantly stimulated in liquid culture. Analysis of metabolites in a ΔMohda1 mutant culture revealed that the accumulation of shunt products of the 1,8-dihydroxynaphthalene melanin and ergosterol pathways were significantly enhanced compared to the wild-type strain...
September 1, 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28860123/circular-non-coding-rna-hipk3-mediates-retinal-vascular-dysfunction-in-diabetes-mellitus
#18
Kun Shan, Chang Liu, Bai-Hui Liu, Xue Chen, Rui Dong, Xin Liu, Yang-Yang Zhang, Ban Liu, Shu-Jie Zhang, Jia-Jian Wang, Sheng-Hai Zhang, Ji-Hong Wu, Chen Zhao, Biao Yan
Background -The vascular complications of diabetes mellitus are the major causes of morbidity and mortality among people with diabetes. Circular RNAs (circRNAs) are a class of endogenous non-coding RNAs that regulate gene expression in eukaryotes. In this study, we investigated the role of circRNA in retinal vascular dysfunction induced by diabetes. Methods -Quantitative polymerase chain reactions, Sanger sequencing, and Northern blots were conducted to detect circHIPK3 expression pattern upon diabetes mellitus-related stresses...
August 31, 2017: Circulation
https://www.readbyqxmd.com/read/28843521/curcumin-suppresses-proliferation-and-in-vitro-invasion-of-human-prostate-cancer-stem-cells-by-cerna-effect-of-mir-145-and-lncrna-ror
#19
Te Liu, Huiying Chi, Jiulin Chen, Chuan Chen, Yongyi Huang, Hao Xi, Jun Xue, Yibing Si
Many studies have demonstrated that curcumin can effectively inhibit the proliferation, invasion, and tumorigenesis of prostate cancer cells in vitro and in vivo. In this study, CD44(+)/CD133(+) human prostate cancer stem cells (HuPCaSCs) were isolated from the prostate cancer cell lines Du145 and 22RV1. Curcumin treatment of these cells resulted in the inhibition of in vitro proliferation and invasion, and cell cycle arrest. The expression levels of cell cycle proteins (Ccnd1 and Cdk4) and stem cell markers (Oct4, CD44, and CD133) were decreased in curcumin-treated HuPCaSCs...
October 5, 2017: Gene
https://www.readbyqxmd.com/read/28836717/transmission-of-penicillium-aurantiogriseum-partiti-like-virus-1-to-a-new-fungal-host-cryphonectria-parasitica-confers-higher-resistance-to-salinity-and-reveals-adaptive-genomic-changes
#20
Luca Nerva, Alessandro Silvestri, Marina Ciuffo, Sabrina Palmano, Givanna Cristina Varese, Massimo Turina
We attempted to transfect six recently characterized virus species to protoplasts of Penicillium janczewskii and Chryphonectria parasitica. None of the recovered P. janczewskii colonies was positive for the transfected viruses, but Penicillium aurantiogriseum partiti-like virus 1 (PaPLV1) was detected in three distinct regenerated C. parasitica colonies. We screened the phenotype of the infected strains in up to 45 different conditions combining different media, salinity and temperatures: our results show that the infected strains grow slower than the virus- free in most of the tested conditions with the exception of halophilic stress in a specific nutrient combination media...
August 24, 2017: Environmental Microbiology
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