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RNA World

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https://www.readbyqxmd.com/read/28315989/rnai-inhibition-of-feruloyl-coa-6-hydroxylase-reduces-scopoletin-biosynthesis-and-post-harvest-physiological-deterioration-in-cassava-manihot-esculenta-crantz-storage-roots
#1
Shi Liu, Ima M Zainuddin, Herve Vanderschuren, James Doughty, John R Beeching
Cassava (Manihot esculenta Crantz) is a major world crop, whose storage roots provide food for over 800 million throughout the humid tropics. Despite many advantages as a crop, the development of cassava is seriously constrained by the rapid post-harvest physiological deterioration (PPD) of its roots that occurs within 24-72 h of harvest, rendering the roots unpalatable and unmarketable. PPD limits cassava's marketing possibilities in countries that are undergoing increased development and urbanisation due to growing distances between farms and consumers...
March 18, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28315486/crispr-cas9-mediated-genome-editing-in-plants
#2
Xuejun Liu, Chuanxiao Xie, Huaijun Si, Jinxiao Yang
The increasing burden of the world's population on agriculture necessitates the development of more robust crops. As the amount of information from sequenced crop genomes increases, technology can be used to investigate the function of genes in detail and to design improved crops at the molecular level. Recently, an RNA-programmed genome-editing system composed of a clustered regularly interspaced short palindromic repeats (CRISPR)-encoded guide RNA and the nuclease Cas9 has provided a powerful platform to achieve these goals...
March 14, 2017: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/28290513/a-potential-and-novel-type-transgenic-corn-plant-for-control-of-the-corn-borer
#3
Zhen Yue, Xiangrui Li, Enyan Zhang, Xiaoxia Liu, Zhangwu Zhao
The corn borer is a world-wide agricultural pest. In this study, a full-length neuropeptide F (npf) gene in Ostrinia furnacalis was sequenced and cloned from a cDNA library, in which the npf gene produces two splicing mRNA variants - npf1 and npf2 (with a 120 bp segment inserted into the npf1 sequence to generate npf2). A spatio-temporal expression analysis showed that the highest expression level of npf was in the midgut of 5(th) instar larvae (the gluttony period), and their npf expression and food consumption were significantly promoted after food deprivation for 6 h...
March 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28285495/pharmacological-interventions-for-acute-hepatitis-c-infection-an-attempted-network-meta-analysis
#4
REVIEW
Maria Kalafateli, Elena Buzzetti, Douglas Thorburn, Brian R Davidson, Emmanuel Tsochatzis, Kurinchi Selvan Gurusamy
BACKGROUND: Hepatitis C virus (HCV) is a single-stranded RNA (ribonucleic acid) virus that has the potential to cause inflammation of the liver. The traditional definition of acute HCV infection is the first six months following infection with the virus. Another commonly used definition of acute HCV infection is the absence of HCV antibody and subsequent seroconversion (presence of HCV antibody in a person who was previously negative for HCV antibody). Approximately 40% to 95% of people with acute HCV infection develop chronic HCV infection, that is, have persistent HCV RNA in their blood...
March 13, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28283009/-production-and-molecular-characterization-of-plasmodium-falciparum-recombinant-circumsporozoite-protein-with-37-nanp-and-4-nvdp-epitopes
#5
Yunus Uyar, Abdüssamed Akşit, Serkan Karaca, Şirin Sahra Ceylan, Merve Yürük
Malaria is caused by the protozoan parasite Plasmodium, the leading cause of death amongst the parasitic diseases. The disease is transmitted to human by the bites of female Anopheles mosquitoes. According to the World Health Organization (WHO) data, there were an estimated 214 million malaria cases and estimated 438.000 deaths occurred worldwide, in 2015. It is observed that 90% of all the deaths due to malaria occur in Africa. 78% of these cases were children who are under five years old. Intensive malaria interventions helped to reduce malaria incidence by 37% between 2000 and 2015...
January 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28280737/bioinformatics-study-of-structural-patterns-in-plant-microrna-precursors
#6
J Miskiewicz, K Tomczyk, A Mickiewicz, J Sarzynska, M Szachniuk
According to the RNA world theory, RNAs which stored genetic information and catalyzed chemical reactions had their contribution in the formation of current living organisms. In recent years, researchers studied this molecule diversity, i.a. focusing on small non-coding regulatory RNAs. Among them, of particular interest is evolutionarily ancient, 19-24 nt molecule of microRNA (miRNA). It has been already recognized as a regulator of gene expression in eukaryotes. In plants, miRNA plays a key role in the response to stress conditions and it participates in the process of growth and development...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28279253/collaborative-study-for-the-establishment-of-the-ph-eur-hepatitis-e-virus-rna-for-nat-testing-biological-reference-preparation-batch-1
#7
S A Baylis, E Terao, J Blümel, K-M O Hanschmann
A new European Pharmacopoeia (Ph. Eur.) biological reference preparation (BRP) had to be established further to the decision to include nucleic acid testing (NAT) for the detection of hepatitis E virus (HEV) RNA in the monograph Human plasma (pooled and treated for virus inactivation) (1646). To this purpose, an international collaborative study was launched in the framework of the Biological Standardisation Programme (BSP) of the European Directorate for the Quality of Medicines & HealthCare (EDQM) and the Commission of the European Union (EU)...
2017: Pharmeuropa Bio & Scientific Notes
https://www.readbyqxmd.com/read/28279183/circles-reshaping-the-rna-world-from-waste-to-treasure
#8
REVIEW
Jing Liu, Tian Liu, Xiaman Wang, Aili He
A new type of RNAs was identified from genes traditionally thought to express messenger or linear ncRNA (noncoding RNA) only. They were subsequently named as circRNAs (circular RNAs) due to the covalently closed structure. Accumulating studies were performed to explore the expression profile of circRNAs in different cell types and diseases, the outcomes totally changed our view of ncRNAs, which was thought to be junk by-products in the process of gene transcription, and enriched our poor understanding of its underlying functions...
March 9, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/28273073/src-2-mediated-coactivation-of-anti-tumorigenic-target-genes-suppresses-myc-induced-liver-cancer
#9
Shruthy Suresh, Deniz Durakoglugil, Xiaorong Zhou, Bokai Zhu, Sarah Comerford, Chao Xing, Xian-Jin Xie, Brian York, Kathryn A O'Donnell
Hepatocellular carcinoma (HCC) is the fifth most common solid tumor in the world and the third leading cause of cancer-associated deaths. A Sleeping Beauty-mediated transposon mutagenesis screen previously identified mutations that cooperate with MYC to accelerate liver tumorigenesis. This revealed a tumor suppressor role for Steroid Receptor Coactivator 2/Nuclear Receptor Coactivator 2 (Src-2/Ncoa2) in liver cancer. In contrast, SRC-2 promotes survival and metastasis in prostate cancer cells, suggesting a tissue-specific and context-dependent role for SRC-2 in tumorigenesis...
March 8, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28272163/real-world-efficacy-of-daclatasvir-and-sofosbuvir-with-and-without-ribavirin-in-hiv-hcv-co-infected-patients-with-advanced-liver-disease-in-a-french-early-access-cohort
#10
Karine Lacombe, Hélène Fontaine, Catherine Dhiver, Sophie Metivier, Eric Rosenthal, Teresa Antonini, Marc Antoine Valantin, Patrick Miailhes, Stanislas Harent, Dominique Batisse, Georges-Philippe Pageaux, Julie Chas, Hugues Aumaitre, Stephanie Dominguez, Thierry Allegre, Alain Lafeuillade, Eric Billaud, Pierre De Truchis, Philippe Perre, Vincent Leroy, Victor De Ledinghen, Philippe Sogni, Francois Dabis, Yue Zhao, Anne Filipovics, Larysa Fedchuk, Raoudha Akremi, Yacia Bennai, Dominique Salmon Ceron
BACKGROUND: Efficacious, well-tolerated direct antiviral agents have drastically changed the prognosis of hepatitis C virus (HCV) disease, but real-world data for oral treatments are limited in key populations such as human immunodeficiency virus (HIV)/HCV co-infection with advanced liver disease. Daclatasvir (DCV) efficacy and safety was assessed in the French "Autorisation Temporaire d'Utilisation" (ATU) program providing DCV ahead of market authorization to patients with advanced HCV disease without other treatment options...
March 6, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28271383/global-protein-expression-profile-response-of-planktonic-aeromonas-hydrophila-exposed-to-chlortetracycline
#11
Wanxin Li, Zujie Yao, Xiangyu Zhang, Fang Huang, Wenxiong Lin, Xiangmin Lin
The antibiotics resistance phenomena of Aeromonas hydrophila has become serious economic and public health problems for the world aquaculture industry and human health care. In this study, to investigate the instinct antibiotics adaptive mechanism of this pathogen, iTRAQ (Isobaric Tags for Relative and Absolute Quantitation) based quantitative proteomics technologies were performed to compare the differential expression of A. hydrophila in planktonic status in response to chlortetracycline (CTC) stress and then identified total 1552 proteins including 285 altered proteins with 90 increasing and 195 decreasing abundance proteins...
April 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28270616/structure-of-deformed-wing-virus-a-major-honey-bee-pathogen
#12
Karel Škubník, Jiří Nováček, Tibor Füzik, Antonín Přidal, Robert J Paxton, Pavel Plevka
The worldwide population of western honey bees (Apis mellifera) is under pressure from habitat loss, environmental stress, and pathogens, particularly viruses that cause lethal epidemics. Deformed wing virus (DWV) from the family Iflaviridae, together with its vector, the mite Varroa destructor, is likely the major threat to the world's honey bees. However, lack of knowledge of the atomic structures of iflaviruses has hindered the development of effective treatments against them. Here, we present the virion structures of DWV determined to a resolution of 3...
March 7, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28267439/mechanisms-of-colitis-accelerated-colon-carcinogenesis-and-its-prevention-with-the-combination-of-aspirin-and-curcumin-transcriptomic-analysis-using-rna-seq
#13
Yue Guo, Zheng-Yuan Su, Chengyue Zhang, John M Gaspar, Rui Wang, Ronald P Hart, Michael P Verzi, Ah-Ng Tony Kong
Colorectal cancer (CRC) remains the leading cause of cancer-related death in the world. Aspirin (ASA) and curcumin (CUR) are widely investigated chemopreventive candidates for CRC. However, the precise mechanisms of their action and their combinatorial effects have not been evaluated. The purpose of the present study was to determine the effect of ASA, CUR, and their combination in azoxymethane/dextran sulfate sodium (AOM/DSS)-induced colitis-accelerated colorectal cancer (CAC). We also aimed to characterize the differential gene expression profiles in AOM/DSS-induced tumors as well as in tumors modulated by ASA and CUR using RNA-seq...
March 3, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28267239/the-transcriptome-of-the-avian-malaria-parasite-plasmodium-ashfordi-displays-host-specific-gene-expression
#14
Elin Videvall, Charlie K Cornwallis, Dag Ahrén, Vaidas Palinauskas, Gediminas Valkiūnas, Olof Hellgren
Malaria parasites (Plasmodium spp.) include some of the world's most widespread and virulent pathogens. Our knowledge of the molecular mechanisms these parasites use to invade and exploit hosts other than mice and primates is, however, extremely limited. It is therefore imperative to characterize transcriptome-wide gene expression from non-model malaria parasites and how this varies across host individuals. Here, we used high-throughput Illumina RNA-sequencing on blood from wild-caught Eurasian siskins experimentally infected with a clonal strain of the avian malaria parasite Plasmodium ashfordi (lineage GRW2)...
March 7, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28259988/targeting-glutamine-metabolism-and-the-focal-adhesion-kinase-additively-inhibits-the-mammalian-target-of-the-rapamycin-pathway-in-spheroid-cancer-stem-like-properties-of-ovarian-clear-cell-carcinoma-in%C3%A2-vitro
#15
Masakazu Sato, Kei Kawana, Katsuyuki Adachi, Asaha Fujimoto, Mitsuyo Yoshida, Hiroe Nakamura, Haruka Nishida, Tomoko Inoue, Ayumi Taguchi, Juri Ogishima, Satoko Eguchi, Aki Yamashita, Kensuke Tomio, Osamu Wada-Hiraike, Katsutoshi Oda, Takeshi Nagamatsu, Yutaka Osuga, Tomoyuki Fujii
Ovarian cancer is one of the leading causes of death in the world, which is linked to its resistance to chemotherapy. Strategies to overcome chemoresistance have been keenly investigated. Culturing cancer cells in suspension, which results in formation of spheroids, is a more accurate reflection of clinical cancer behavior in vitro than conventional adherent cultures. By performing RNA-seq analysis, we found that the focal adhesion pathway was essential in spheroids. The phosphorylation of focal adhesion kinase (FAK) was increased in spheroids compared to adherent cells, and inhibition of FAK in spheroids resulted in inhibition of the downstream mammalian target of the rapamycin (mTOR) pathway in ovarian clear cell carcinomas...
February 23, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28257507/splicing-related-genes-are-alternatively-spliced-upon-changes-in-ambient-temperatures-in-plants
#16
Leonie Verhage, Edouard I Severing, Johan Bucher, Michiel Lammers, Jacqueline Busscher-Lange, Guusje Bonnema, Nicole Rodenburg, Marcel C G Proveniers, Gerco C Angenent, Richard G H Immink
Plants adjust their development and architecture to small variations in ambient temperature. In a time in which temperatures are rising world-wide, the mechanism by which plants are able to sense temperature fluctuations and adapt to it, is becoming of special interest. By performing RNA-sequencing on two Arabidopsis accession and one Brassica species exposed to temperature alterations, we showed that alternative splicing is an important mechanism in ambient temperature sensing and adaptation. We found that amongst the differentially alternatively spliced genes, splicing related genes are enriched, suggesting that the splicing machinery itself is targeted for alternative splicing when temperature changes...
2017: PloS One
https://www.readbyqxmd.com/read/28255427/circular-rnas-in-colorectal-cancer-possible-roles-in-regulation-of-cancer-cells
#17
REVIEW
María Isabel Taborda, Sebastián Ramírez, Giuliano Bernal
Colorectal cancer (CRC) is the third most commonly diagnosed cancer in the world and the fourth principal cause of cancer deaths worldwide. Currently, there is a lack of low cost and noninvasive screening tests for CRC, becoming a serious health problem. In this context, a potential biomarker for the early detection of CRC has recently gained attention. Circular RNAs (circRNA), a re-discovered, abundant RNA specie, is a type of noncoding covalent closed RNAs formed from both exonic and intronic sequences. These circular molecules are widely expressed in cells, exceeding the abundance of the traditional linear mRNA transcript...
February 15, 2017: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28253281/tag-mechanism-as-a-strategy-for-the-rna-replicase-to-resist-parasites-in-the-rna-world
#18
Sanmao Wu, Chunwu Yu, Wentao Zhang, Shaolin Yin, Yong Chen, Yu Feng, Wentao Ma
The idea that life may have started with an "RNA world" is attractive. Wherein, a crucial event (perhaps at the very beginning of the scenario) should have been the emergence of a ribozyme that catalyzes its own replication, i.e., an RNA replicase. Although now there is experimental evidence supporting the chemical feasibility of such a ribozyme, the evolutionary dynamics of how the replicase could overcome the "parasite" problem (because other RNAs may also exploit this ribozyme) and thrive, as described in the scenario, remains unclear...
2017: PloS One
https://www.readbyqxmd.com/read/28251517/a-new-strain-of-crimean-congo-hemorrhagic-fever-virus-isolated-from-xinjiang-china
#19
Rong Guo, Shu Shen, Yanfang Zhang, Junming Shi, Zhengyuan Su, Dan Liu, Jinliang Liu, Juan Yang, Qiguo Wang, Zhihong Hu, Yujiang Zhang, Fei Deng
Crimean-Congo hemorrhagic fever virus (CCHFV) is a highly pathogenic tick-borne virus with a fatality rate of up to 50% in humans. CCHFV is widely distributed in countries around the world. Outbreaks of CCHFV infection in humans have occurred in prior years in Xinjiang Province, China. Epidemiological surveys have detected CCHFV RNA in ticks and animals; however, few isolates were identified. In this study, we identified and isolated a new CCHFV strain from Hyalomma asiaticum asiaticum ticks collected from north of Tarim Basin in Xinjiang, China...
February 2017: Virologica Sinica
https://www.readbyqxmd.com/read/28248990/a-transcriptomic-survey-of-migdolus-fryanus-sugarcane-rhizome-borer-larvae
#20
Darlan Gonçalves Nakayama, Célio Dias Santos Júnior, Luciano Takeshi Kishi, Rafael Pedezzi, Adelita Carolina Santiago, Andrea Soares-Costa, Flavio Henrique-Silva
Sugarcane, a major crop grown in the tropical and subtropical areas of the world, is produced mainly for sucrose, which is used as a sweetener or for the production of bioethanol. Among the numerous pests that significantly affect the yield of sugarcane, the sugarcane rhizome borer (Migdolus fryanus, a cerambycidae beetle) is known to cause severe damage to the crops in Brazil. The absence of molecular information about this insect reinforces the need for studies and an effective method to control this pest...
2017: PloS One
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