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https://www.readbyqxmd.com/read/29454093/silencing-circular-rna-hsa_circ_0000977-suppresses-pancreatic-ductal-adenocarcinoma-progression-by-stimulating-mir-874-3p-and-inhibiting-plk1-expression
#1
Wen-Jie Huang, Yun-Chao Wang, Song-Song Liu, Jia-Li Yang, Shi-Xiang Guo, Li-Jiang Wang, Huai-Zhi Wang, Ying-Fang Fan
Circular RNAs (CircRNAs) are a novel type of endogenous noncoding RNAs that regulate target gene expression by interacting with microRNA (miRNA). Emerging evidence shows that dysregulation of circRNAs plays important roles in biological and pathological processes, including cancer development and progression. The functional role of circRNA in PDAC (pancreatic ductal adenocarcinoma) remains to be investigated. In this study, high throughput microarray assay revealed that hsa_circ_0000977 was aberrantly up-regulated in pancreatic cancer tissues; this was also validated by qRT-PCR...
February 14, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29454090/characterization-of-vasa-homolog-in-a-neotropical-catfish-jundi%C3%A3-rhamdia-quelen-molecular-cloning-and-expression-analysis-during-embryonic-and-larval-development
#2
Juliana M B Ricci, Emanuel R M Martinez, Arno J Butzge, Lucas B Doretto, Marcos A Oliveira, Robie Allan Bombardelli, Jan Bogerd, Rafael H Nóbrega
We have characterized the full-length vasa cDNA from Jundiá, Rhamdia quelen (Heptapteridae, Siluriformes). vasa encodes a member of the DEAD-box protein family of ATP-dependent RNA helicases. This protein is highly conserved among different organisms and its role is associated with RNA metabolism. In the majority of the investigated species, vasa is restricted to the germ cell lineage and its expression has been used to study germline development in many organisms, including fish. The deduced R. quelen vasa amino acid sequence displayed high similarity with Vasa protein sequences from other organisms, and did not cluster with PL10 or P68 DEAD-box protein subfamilies...
February 14, 2018: Gene
https://www.readbyqxmd.com/read/29453967/discovery-of-anti-viral-molecules-and-their-vital-functions-in-bombyx-mori
#3
REVIEW
Peng Lü, Ye Pan, Yanhua Yang, Feifei Zhu, Chengjun Li, Qin Yao, Keping Chen
The silkworm Bombyx mori (B. mori), a lepidopteran model organism, has become an important model for molecular biology researches with its genome completely sequenced. Silkworms confront different types of virus diseases, mainly including those caused by Bombyx mori nucleopolyhedrovirus (BmNPV), Bombyx mori densovirus type 1 (BmDNV-1), Bombyx mori bidesovirus (BmBDV) which was termed as Bombyx mori densovirus type 2 (BmDNV-2) or Bombyx mori parvo-like virus (BmPLV) before in sericulture. B. mori offers excellent models to study the molecular mechanisms of insect innate immune responses to viruses...
February 14, 2018: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/29453903/tracking-the-dynamic-folding-and-unfolding-of-rna-g-quadruplexes-in-live-cells
#4
Xiu-Cai Chen, Shuo-Bin Chen, Jing Dai, Jia-Hao Yuan, Tian-Miao Ou, Zhi-Shu Huang, Jia-Heng Tan
Due to the absence of methods for tracking RNA G-quadruplex dynamics, especially the folding and unfolding of this attractive structure in live cells, understanding of the biological roles of RNA G-quadruplexes is so far limited. Here we reported a new red-emitting fluorescent probe, QUMA-1, for a selective, continuous and real-time visualization of RNA G-quadruplexes in live cells. The applications of QUMA-1 in several previously intractable applications, including live-cell imaging of the dynamic folding, unfolding and movement of RNA G-quadruplexes and visualizing the unwinding of RNA G-quadruplexes by RNA helicase have been demonstrated...
February 17, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29453220/identification-of-novel-fusion-transcripts-in-multiple-myeloma
#5
Mingxuan Lin, Peak Ling Lee, Lily Chiu, Constance Chua, Kenneth H K Ban, Adeline H F Lin, Zit Liang Chan, Tae-Hoon Chung, Benedict Yan, Wee-Joo Chng
AIMS: Multiple myeloma (MM) is a heterogeneous disease characterised by genetically complex abnormalities. The classical mutational spectrum includes recurrent chromosomal aberrations and gene-level mutations. Recurrent translocations involving the IGH gene such as t(11;14), t(4;14) and t(14;16) are well known. However, the presence of complex genetic abnormalities raises the possibility that fusions other than the recurrent IGH translocations exist. We therefore employed a targeted RNA-sequencing panel to identify novel putative fusions in a local cohort of MM...
February 16, 2018: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/29453041/microrna-signature-of-regulatory-t-cells-in-health-and-autoimmunity
#6
REVIEW
Mehdi Soltanzadeh-Yamchi, Mehdi Shahbazi, Saeed Aslani, Mousa Mohammadnia-Afrouzi
MicroRNAs (miRNAs) are small RNA molecules with regulatory functions on the expression of genes through binding directly to target messenger RNA (mRNA) transcripts, eventuating in gene expression suppression via translational hindrance and/or target mRNA cleavage. These molecules have been established to participate in numerous critical cellular settings, including differentiation, development, and function of immune cells. As an important suppressor cell of immune system, regulatory T cells (Tregs) are important in modulating the immune homeostasis as well as tolerance to self-antigens...
February 13, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29452455/complex-hur-function-in-pancreatic-cancer-cells
#7
REVIEW
Jonathan R Brody, Dan A Dixon
Pancreatic ductal adenocarcinoma (PDAC) is one of the most lethal cancers with dismal patient outcomes. The underlying core genetic drivers of disease have been identified in human tumor specimens and described in genetically engineered mouse models. These genetic drivers of PDAC include KRAS signaling, TP53 mutations, and genetic loss of the SMAD4 tumor suppressor protein. Beyond the known mutational landscape of PDAC genomes, alternative disrupted targets that extend beyond conventional genetic mutations have been elusive and understudied in the context of PDAC cell therapeutic resistance and survival...
February 16, 2018: Wiley Interdisciplinary Reviews. RNA
https://www.readbyqxmd.com/read/29452145/rna-biology-featuring-the-special-issue-guest-editors-cancer-letters
#8
EDITORIAL
Girish C Shukla, Sanjay Gupta
No abstract text is available yet for this article.
February 13, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29450726/c9orf72-associated-neurodegeneration-in-als-ftd-breaking-new-ground-in-ribosomal-rna-and-nucleolar-dysfunction
#9
REVIEW
Dustin Herrmann, Rosanna Parlato
Amyotrophic lateral sclerosis (ALS) and frontotemporal degeneration (FTD) are neurodegenerative diseases with distinct clinical appearance. However, both share as major genetic risk factor a C9orf72 locus intronic hexanucleotide expansion. The pathogenic pathways associated with the expansion-dependent neuronal toxicity are still poorly understood. Recent efforts to identify common threads of neuronal dysfunction have pointed towards deficits of ribosomal RNA (rRNA) biogenesis and loss of nucleolar integrity, a condition known as nucleolar stress that is an emerging shared feature among neurodegenerative diseases...
February 15, 2018: Cell and Tissue Research
https://www.readbyqxmd.com/read/29450655/transcription-factors-network-in-root-endosymbiosis-establishment-and-development
#10
REVIEW
Issa Diédhiou, Diaga Diouf
Root endosymbioses are mutualistic interactions between plants and the soil microorganisms (Fungus, Frankia or Rhizobium) that lead to the formation of nitrogen-fixing root nodules and/or arbuscular mycorrhiza. These interactions enable many species to survive in different marginal lands to overcome the nitrogen-and/or phosphorus deficient environment and can potentially reduce the chemical fertilizers used in agriculture which gives them an economic, social and environmental importance. The formation and the development of these structures require the mediation of specific gene products among which the transcription factors play a key role...
February 15, 2018: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/29450143/purified-horse-milk-exosomes-contain-an-unpredictable-small-number-of-major-proteins
#11
Sergey E Sedykh, Lada V Purvinish, Artem S Monogarov, Evgeniya E Burkova, Alina E Grigor'eva, Dmitrii V Bulgakov, Pavel S Dmitrenok, Valentin V Vlassov, Elena I Ryabchikova, Georgy A Nevinsky
Exosomes are 40-100 nm nanovesicles containing RNA and different proteins. Exosomes containing proteins, lipids, mRNAs, and microRNAs are important in intracellular communication and immune function. Exosomes from different sources are usually obtained by combination of centrifugation and ultracentrifugation and according to published data can contain from a few dozens to thousands of different proteins. Crude exosome preparations from milk of eighteen horses were obtained for the first time using several standard centrifugations...
June 2017: Biochimie Open
https://www.readbyqxmd.com/read/29449881/a-copper-controlled-rna-interference-system-for-reversible-silencing-of-target-genes-in-trichoderma-reesei
#12
Lei Wang, Fanglin Zheng, Weixin Zhang, Yaohua Zhong, Guanjun Chen, Xiangfeng Meng, Weifeng Liu
Background: Trichoderma reesei is a primary lignocellulosic enzyme producer in industry. However, the mechanisms underlying cellulase synthesis as well as other physiological processes are insufficiently understood partly due to the sophisticated process for its genetic manipulation. Target gene knockdown by RNA interference (RNAi) is a powerful tool for genetic research and biotechnology in eukaryotes including filamentous fungi. Previously reported RNAi system in T. reesei was either uncontrollable or only applicable in certain nutrition state...
2018: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/29449856/efficient-detection-of-long-dsrna-in-vitro-and-in-vivo-using-the-dsrna-binding-domain-from-fhv-b2-protein
#13
Baptiste Monsion, Marco Incarbone, Kamal Hleibieh, Vianney Poignavent, Ahmed Ghannam, Patrice Dunoyer, Laurent Daeffler, Jens Tilsner, Christophe Ritzenthaler
Double-stranded RNA (dsRNA) plays essential functions in many biological processes, including the activation of innate immune responses and RNA interference. dsRNA also represents the genetic entity of some viruses and is a hallmark of infections by positive-sense single-stranded RNA viruses. Methods for detecting dsRNA rely essentially on immunological approaches and their use is often limited to in vitro applications, although recent developments have allowed the visualization of dsRNA in vivo . Here, we report the sensitive and rapid detection of long dsRNA both in vitro and in vivo using the dsRNA binding domain of the B2 protein from Flock house virus...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29449542/long-non-coding-rnas-in-ischemic-stroke
#14
REVIEW
Mei-Hua Bao, Vivian Szeto, Burton B Yang, Shu-Zhen Zhu, Hong-Shuo Sun, Zhong-Ping Feng
Stroke is one of the leading causes of mortality and disability worldwide. Uncovering the cellular and molecular pathophysiological processes in stroke have been a top priority. Long non-coding (lnc) RNAs play critical roles in different kinds of diseases. In recent years, a bulk of aberrantly expressed lncRNAs have been screened out in ischemic stroke patients or ischemia insulted animals using new technologies such as RNA-seq, deep sequencing, and microarrays. Nine specific lncRNAs, antisense non-coding RNA in the INK4 locus (ANRIL), metastasis-associate lung adenocarcinoma transcript 1 (MALAT1), N1LR, maternally expressed gene 3 (MEG3), H19, CaMK2D-associated transcript 1 (C2dat1), Fos downstream transcript (FosDT), small nucleolar RNA host gene 14 (SNHG14), and taurine-upregulated gene 1 (TUG1), were found increased in cerebral ischemic animals and/or oxygen-glucose deprived (OGD) cells...
February 15, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29448252/functions-and-roles-of-long-non-coding-rnas-in-human-nasopharyngeal-carcinoma
#15
JingJing Wu, Swei Sunny Hann
Nasopharyngeal carcinoma (NPC) is one of the most common cancers originating in the nasopharynx and occurring at high frequency in South-eastern Asia and North Africa. Long non-coding RNAs (lncRNAs) are a class of non-protein-coding RNA molecules and key regulators of developmental, physiological, and pathological processes in humans. Emerging studies have shown that lncRNAs play critical roles in tumorgenicity and cancer prognosis. With the development of deep sequencing analyses, an extensive amount of functional lncRNAs have been discovered in nasopharyngeal carcinoma tissues and cell lines...
February 9, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29448250/overexpression-of-lymphocyte-antigen-6-complex-locus-e-in-gastric-cancer-promotes-cancer-cell-growth-and-metastasis
#16
Yan Lv, Yu Song, Chen Ni, Shaokai Wang, Zhipeng Chen, Xiaojing Shi, Qin Jiang, Cong Cao, Yun Zuo
BACKGROUND/AIMS: Lymphocyte antigen 6 complex, locus E (LY6E) is a member of the lymphostromal cell membrane Ly6 superfamily protein. The present study investigated the clinical significance and potential biological function of LY6E in gastric cancer (GC). METHODS: LY6E mRNA and protein expressions in human GC tissues and GC cells were tested. Relationship between LY6E expression and the GC patients' clinicopathologic characteristics was analyzed. LY6E was silenced by siRNA in the cultured GC cells...
February 9, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29448054/rage-induced-changes-in-the-proteome-of-alveolar-epithelial-cells
#17
Charles A Downs, Nicholle M Johnson, George Tsaprailis, My N Helms
The receptor for advanced glycation end-products (RAGE) is a pattern recognition receptor and member of the immunoglobulin superfamily. RAGE is constitutively expressed in the distal lung where it co-localizes with the alveolar epithelium; RAGE expression is otherwise minimal or absent, except with disease. This suggests RAGE plays a role in lung physiology and pathology. We used proteomics to identify and characterize the effects of RAGE on rat alveolar epithelial (R3/1) cells. LC-MS/MS identified 177 differentially expressed proteins and the PANTHER Classification System further segregated proteins...
February 12, 2018: Journal of Proteomics
https://www.readbyqxmd.com/read/29447476/sequencing-and-characterization-of-lncrnas-in-the-breast-muscle-of-gushi-and-arbor-acres-chicken
#18
Tuanhui Ren, Zhuanjian Li, Yu Zhou, Xuelian Liu, Ruili Han, Yongcai Wang, Fengbin Yan, Guirong Sun, Hong Li, Xiangtao Kang
Chicken muscle quality is one of the most important factors determining the economic value of poultry, and muscle development and growth are affected by genetics, environment, and nutrition. However, little is known about the molecular regulatory mechanisms of long non-coding RNAs (lncRNAs) in chicken skeletal muscle development. Our study aimed to better understand muscle development in chickens and thereby improve meat quality. In this study, Ribo-Zero RNA-Seq was used to investigate differences in the expression profiles of muscle development-related genes and associated pathways between Gushi (GS) and Arbor Acres (AA) chickens...
February 15, 2018: Genome Génome / Conseil National de Recherches Canada
https://www.readbyqxmd.com/read/29447113/the-ago-proteins-an-overview
#19
Saife Niaz
Small RNAs govern almost every biological process in eukaryotes associating with the Argonaute proteins to form the RNA-induced silencing complex (mRISC). Argonaute proteins constitute the core of RISCs with different members having variety of protein binding partners and biochemical properties. This review focuses on the AGO subfamily of the Argonautes that are ubiquitously expressed and are associated with small RNAs. The structure, function and the role of the AGO proteins in the cell is discussed in detail...
November 27, 2017: Biological Chemistry
https://www.readbyqxmd.com/read/29447077/identification-of-proteins-that-bind-to-the-neuroprotective-agent-neoechinulin-a
#20
Shinji Kamisuki, Natsumi Himeno, Yukine Tsurukawa, Tomoe Kusayanagi, Masahiro Takeno, Takashi Kamakura, Kouji Kuramochi, Fumio Sugawara
Neoechinulin A is an indole alkaloid with several biological activities. We previously reported that this compound protects neuronal PC12 cells from cytotoxicity induced by the peroxynitrite generator 3-morpholinosydnonimine (SIN-1), but the target proteins and precise mechanism of action of neoechinulin A were unclear. Here, we employed a phage display screen to identify proteins that bind directly with neoechinulin A. Our findings identified two proteins, chromogranin B and glutaredoxin 3, as candidate target binding partners for the alkaloid...
February 15, 2018: Bioscience, Biotechnology, and Biochemistry
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