ENCORE: Exploring RNA Processing Regulation with the ENCODE RNA Binding Protein Resource
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Extensive Translation of Circular Rnas Driven by N6-Methyladenosine
Cell Research (2017) 27:626-641. ORIGINAL ARTICLE www.nature.com/cr Extensive translation of circular RNAs driven by N6-methyladenosine Yun Yang1, 2, 3, 4, *, Xiaojuan Fan2, *, Miaowei Mao4, 5, *, Xiaowei Song2, 4, Ping Wu6, 7, Yang Zhang8, Yongfeng Jin1, Yi Yang5, Ling-Ling Chen8, Yang Wang9, Catherine CL Wong6, 7, Xinshu Xiao3, Zefeng Wang2, 4 1Institute of Biochemistry, College of Life Sciences, Zhejiang University at Zijingang, Zhejiang, Hangzhou, Zhejiang 310058, Chi- na; 2CAS Key Lab for Computational Biology, CAS Center for Excellence in Molecular Cell Science, CAS-MPG Partner Institute for Computational Biology, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China; 3Department of Integrative Biology and Physiology and the Molecular Biology Institute, UCLA, Los Angeles, CA 90095, USA; 4Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; 5Synthetic Biology and Biotechnology Laboratory, State Key Laboratory of Bioreactor Engineering, School of Pharmacy, East China University of Sci- ence and Technology, Shanghai, China; 6National Center for Protein Science, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China; 7Shanghai Science Research Center, Chinese Academy of Sciences, Shanghai 201204, China; 8Institute of Biochemistry and Cell Biology, Shanghai Institute for Biolog- ical Sciences, Chinese Academy of Sciences, Shanghai 200031, China; 9Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning 116044, China Extensive pre-mRNA back-splicing generates numerous circular RNAs (circRNAs) in human transcriptome. However, the biological functions of these circRNAs remain largely unclear. Here we report that N6-methyladenosine (m6A), the most abundant base modification of RNA, promotes efficient initiation of protein translation from cir- cRNAs in human cells. -
Composition of Herpesvirus Ribonucleoprotein Complexes †
Abstract Composition of Herpesvirus Ribonucleoprotein Complexes † Eric S. Pringle 1,2,* and Craig McCormick 1,2 1 Department of Microbiology and Immunology, Dalhousie University, Halifax, NS B3H 4R2, Canada; [email protected] 2 Beatrice Hunter Cancer Research Institute, Halifax, NS B3H 4R2, Canada * Correspondence: [email protected] † Presented at Viruses 2020—Novel Concepts in Virology, Barcelona, Spain, 5–7 February 2020. Published: 4 July 2020 Abstract: Herpesvirus genomes are decoded by host RNA polymerase enzymes, generating messenger ribonucleotides (mRNA) that are post-transcriptionally modified and exported to the cytoplasm through the combined work of host and viral factors. These viral mRNA bear 5′-m7GTP caps and poly(A) tails that should permit the assembly of canonical host eIF4F cap-binding complexes to initiate protein synthesis. However, the precise mechanisms of translation initiation remain to be investigated for Kaposi’s sarcoma-associated herpesvirus (KSHV) and other herpesviruses. During KSHV lytic replication in lymphoid cells, the activation of caspases leads to the cleavage of eIF4G and depletion of eIF4F. Translating mRNPs depleted of eIF4F retain viral mRNA, suggesting that non-eIF4F translation initiation is sufficient to support viral protein synthesis. To identify proteins required to support viral protein synthesis, we isolated and characterized actively translating messenger ribonucleoprotein (mRNP) complexes by ultracentrifugation and sucrose-gradient fractionation followed by quantitative mass spectrometry. The abundance of host translation initiation factors available to initiate viral protein synthesis were comparable between cells undergoing KSHV lytic or latent replication. The translation initiation factors eIF4E2, NCBP1, eIF4G2, and eIF3d were detected in association with actively translating mRNP complexes during KSHV lytic replication, but their depletion by RNA silencing did not affect virion production. -
EIF4G2 Rabbit Pab
Leader in Biomolecular Solutions for Life Science EIF4G2 Rabbit pAb Catalog No.: A2897 Basic Information Background Catalog No. Translation initiation is mediated by specific recognition of the cap structure by A2897 eukaryotic translation initiation factor 4F (eIF4F), which is a cap binding protein complex that consists of three subunits: eIF4A, eIF4E and eIF4G. The protein encoded by this gene Observed MW shares similarity with the C-terminal region of eIF4G that contains the binding sites for 102kDa eIF4A and eIF3; eIF4G, in addition, contains a binding site for eIF4E at the N-terminus. Unlike eIF4G, which supports cap-dependent and independent translation, this gene Calculated MW product functions as a general repressor of translation by forming translationally 98kDa/102kDa inactive complexes. In vitro and in vivo studies indicate that translation of this mRNA initiates exclusively at a non-AUG (GUG) codon. Alternatively spliced transcript variants Category encoding different isoforms of this gene have been described. Primary antibody Applications WB, IHC, IF, IP Cross-Reactivity Human, Mouse, Rat Recommended Dilutions Immunogen Information WB 1:500 - 1:1000 Gene ID Swiss Prot 1982 P78344 IHC 1:100 - 1:200 Immunogen 1:50 - 1:200 IF A synthetic peptide corresponding to a sequence within amino acids 750-850 of human EIF4G2 (NP_001409.3). IP 1:50 - 1:200 Synonyms EIF4G2;AAG1;DAP5;NAT1;P97 Contact Product Information www.abclonal.com Source Isotype Purification Rabbit IgG Affinity purification Storage Store at -20℃. Avoid freeze / thaw cycles. Buffer: PBS with 0.02% sodium azide,50% glycerol,pH7.3. Validation Data Western blot analysis of extracts of various cell lines, using EIF4G2 antibody (A2897) at 1:400 dilution. -
Robust Heat Shock Induces Eif2α-Phosphorylation
2078 Research Article Robust heat shock induces eIF2α-phosphorylation- independent assembly of stress granules containing eIF3 and 40S ribosomal subunits in budding yeast, Saccharomyces cerevisiae Tomás Grousl1, Pavel Ivanov1,*, Ivana Frydlová1, Pavla Vasicová1, Filip Janda1, Jana Vojtová1, Katerina Malínská1, Ivana Malcová1, Lenka Nováková1, Dana Janosková1, Leos Valásek2 and Jirí Hasek1,‡ 1Laboratory of Cell Reproduction, Institute of Microbiology of the AS CR, v.v.i., Prague, Czech Republic 2Laboratory of Regulation of Gene Expression, Institute of Microbiology of the AS CR, v.v.i., Prague, Czech Republic *Present address: A.N. Belozersky Institute of Physico-Chemical Biology MSU, Moscow, Russia ‡Author for correspondence (e-mail: [email protected]) Accepted 18 March 2009 Journal of Cell Science 122, 2078-2088 Published by The Company of Biologists 2009 doi:10.1242/jcs.045104 Summary Environmental stresses inducing translation arrest are markers also colocalized with eIF3a. Microscopic analyses of accompanied by the deposition of translational components into the edc3Δlsm4ΔC mutant demonstrated that different stress granules (SGs) serving as mRNA triage sites. It has scaffolding proteins are required to induce SGs upon robust recently been reported that, in Saccharomyces cerevisiae, heat shock as opposed to glucose deprivation. Even though formation of SGs occurs as a result of a prolonged glucose eIF2α became phosphorylated under these stress conditions, the starvation. However, these SGs did not contain eIF3, one of decrease in polysomes and formation of SGs occurred hallmarks of mammalian SGs. We have analyzed the effect of independently of phosphorylation of eIF2α. We conclude that robust heat shock on distribution of eIF3a/Tif32p/Rpg1p and under specific stress conditions, such as robust heat shock, yeast showed that it results in the formation of eIF3a accumulations SGs do contain eIF3 and 40S ribosomes and utilize alternative containing other eIF3 subunits, known yeast SG components routes for their assembly. -
Early Alterations of RNA Metabolism and Splicing from Adult Corticospinal Neurons In
bioRxiv preprint doi: https://doi.org/10.1101/667733; this version posted June 12, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. 1 Early alterations of RNA metabolism and splicing from adult corticospinal neurons in 2 an ALS mouse model 3 4 Christine Marques1,2, Mathieu Fischer1,3, Céline Keime4, Thibaut Burg1, Aurore Brunet1, 5 Jelena Scekic-Zahirovic1 & Caroline Rouaux1* 6 7 8 9 1Inserm UMR_S 1118, Mécanismes centraux et périphériques de la neurodégénérescence, 10 Faculté de Médecine, Université de Strasbourg, Strasbourg, France. 11 2Current address: Department of Neurobiology, Harvard Medical School, Boston, MA, USA; 12 Department of Neurology, Massachusetts General Hospital, Boston, MA, USA. 13 3Current address: Department of Paediatrics, John Radcliffe Hospital, University of Oxford, 14 Oxford, UK. 15 4Inserm UMR_S 1258, CRNS UMR_S 7104, Université de Strasbourg, IGBMC, Strasbourg, 16 France. 17 18 *Correspondence should be addressed to: C.R. ([email protected]) 1 bioRxiv preprint doi: https://doi.org/10.1101/667733; this version posted June 12, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. Abstract Amyotrophic lateral sclerosis (ALS) is a devastating neurodegenerative disease clinically defined as the combined degeneration of corticospinal and corticobulbar neurons (CSN), and bulbar and spinal motor neurons (MN). A growing body of evidence points to the motor cortex, where CSN are located, as the potential initiation site of ALS. However, little is known about the spatiotemporal dynamics of CSN degeneration and the molecular pathways involved. -
Symplekin and Transforming Acidic Coiled-Coil Containing Protein 3 Support the Cancer Cell Mitotic Spindle
SYMPLEKIN AND TRANSFORMING ACIDIC COILED-COIL CONTAINING PROTEIN 3 SUPPORT THE CANCER CELL MITOTIC SPINDLE Kathryn M. Cappell A dissertation submitted to the faculty of the University of North Carolina at Chapel Hill in partial fulfillment of the requirements for the degree of Doctorate of Philosophy in the Department of Pharmacology, School of Medicine. Chapel Hill 2011 Approved by: Advisor: Dr. Angelique Whitehurst Reader: Dr. David Siderovski Reader: Dr. Channing Der Reader: Dr. Pilar Blancafort Reader: Dr. Mohanish Deshmukh ABSTRACT KATHRYN CAPPELL: Symplekin and Transforming Acidic Coiled-Coil Containing Protein 3 Support the Cancer Cell Mitotic Spindle (Under the direction of Dr. Angelique Whitehurst) An increased rate of proliferation in cancer cells, combined with abnormalities in spindle architecture, places tumors under increased mitotic stress. Previously, our laboratory performed a genome-wide paclitaxel chemosensitizer screen to identify genes whose depletion sensitizes non- small cell lung cancer (NSCLC) cells to mitotic stress induced by paclitaxel treatment. This screen uncovered a cohort of genes that are required for viability only in the presence of paclitaxel. Two genes uncovered in this screen were the polyadenylation scaffold symplekin and the gametogenic protein transforming acidic coiled-coil containing protein 3 (TACC3). Herein, we examine the impact of polyadenylation and gametogenesis on the tumor cell mitotic spindle. First, we demonstrate that depletion of SYMPK and other polyadenylation components sensitizes many NSCLC cells, but not normal immortalized lines, to paclitaxel by inducing mitotic errors and leading to abnormal mitotic progression. Second, we demonstrate that multiple gametogenic genes are required for normal microtubule dynamics and mitotic spindle formation in the presence of paclitaxel. -
Anti-CSTF2 / Cstf 64 Antibody (ARG58549)
Product datasheet [email protected] ARG58549 Package: 50 μl anti-CSTF2 / CstF 64 antibody Store at: -20°C Summary Product Description Rabbit Polyclonal antibody recognizes CSTF2 / CstF 64 Tested Reactivity Hu Predict Reactivity Ms, Rat, Cow, Dog, Gpig, Hrs, Rb Tested Application IHC-P, WB Host Rabbit Clonality Polyclonal Isotype IgG Target Name CSTF2 / CstF 64 Antigen Species Human Immunogen Synthetic peptide around the N-terminal region of Human CSTF2 / CstF 64. (within the following sequence: VDPEIALKILHRQTNIPTLIAGNPQPVHGAGPGSGSNVSMNQQNPQAPQA) Conjugation Un-conjugated Alternate Names CstF-64; CF-1 64 kDa subunit; Cleavage stimulation factor 64 kDa subunit; CSTF 64 kDa subunit; Cleavage stimulation factor subunit 2 Application Instructions Predict Reactivity Note Predicted homology based on immunogen sequence: Cow: 85%; Dog: 85%; Guinea Pig: 86%; Horse: 86%; Mouse: 86%; Rabbit: 100%; Rat: 93% Application table Application Dilution IHC-P 4 - 8 µg/ml WB 0.2 - 1 µg/ml Application Note * The dilutions indicate recommended starting dilutions and the optimal dilutions or concentrations should be determined by the scientist. Positive Control 293T Calculated Mw 61 kDa Properties Form Liquid Purification Affinity purified. Buffer PBS, 0.09% (w/v) Sodium azide and 2% Sucrose. Preservative 0.09% (w/v) Sodium azide Stabilizer 2% Sucrose www.arigobio.com 1/3 Concentration Batch dependent: 0.5 - 1 mg/ml Storage instruction For continuous use, store undiluted antibody at 2-8°C for up to a week. For long-term storage, aliquot and store at -20°C or below. Storage in frost free freezers is not recommended. Avoid repeated freeze/thaw cycles. Suggest spin the vial prior to opening. -
Quantitative SUMO Proteomics Reveals the Modulation of Several
www.nature.com/scientificreports OPEN Quantitative SUMO proteomics reveals the modulation of several PML nuclear body associated Received: 10 October 2017 Accepted: 28 March 2018 proteins and an anti-senescence Published: xx xx xxxx function of UBC9 Francis P. McManus1, Véronique Bourdeau2, Mariana Acevedo2, Stéphane Lopes-Paciencia2, Lian Mignacca2, Frédéric Lamoliatte1,3, John W. Rojas Pino2, Gerardo Ferbeyre2 & Pierre Thibault1,3 Several regulators of SUMOylation have been previously linked to senescence but most targets of this modifcation in senescent cells remain unidentifed. Using a two-step purifcation of a modifed SUMO3, we profled the SUMO proteome of senescent cells in a site-specifc manner. We identifed 25 SUMO sites on 23 proteins that were signifcantly regulated during senescence. Of note, most of these proteins were PML nuclear body (PML-NB) associated, which correlates with the increased number and size of PML-NBs observed in senescent cells. Interestingly, the sole SUMO E2 enzyme, UBC9, was more SUMOylated during senescence on its Lys-49. Functional studies of a UBC9 mutant at Lys-49 showed a decreased association to PML-NBs and the loss of UBC9’s ability to delay senescence. We thus propose both pro- and anti-senescence functions of protein SUMOylation. Many cellular mechanisms of defense have evolved to reduce the onset of tumors and potential cancer develop- ment. One such mechanism is cellular senescence where cells undergo cell cycle arrest in response to various stressors1,2. Multiple triggers for the onset of senescence have been documented. While replicative senescence is primarily caused in response to telomere shortening3,4, senescence can also be triggered early by a number of exogenous factors including DNA damage, elevated levels of reactive oxygen species (ROS), high cytokine signa- ling, and constitutively-active oncogenes (such as H-RAS-G12V)5,6. -
TAF15 Is Important for Cellular Proliferation and Regulates the Expression of a Subset of Cell Cycle Genes Through Mirnas
Oncogene (2013) 32, 4646–4655 & 2013 Macmillan Publishers Limited All rights reserved 0950-9232/13 www.nature.com/onc ORIGINAL ARTICLE TAF15 is important for cellular proliferation and regulates the expression of a subset of cell cycle genes through miRNAs M Ballarino1, L Jobert1,4, D Dembe´le´ 1, P de la Grange2, D Auboeuf3 and L Tora1 TAF15 (formerly TAFII68) is a member of the FET (FUS, EWS, TAF15) family of RNA- and DNA-binding proteins whose genes are frequently translocated in sarcomas. By performing global gene expression profiling, we found that TAF15 knockdown affects the expression of a large subset of genes, of which a significant percentage is involved in cell cycle and cell death. In agreement, TAF15 depletion had a growth-inhibitory effect and resulted in increased apoptosis. Among the TAF15-regulated genes, targets of microRNAs (miRNAs) generated from the onco-miR-17 locus were overrepresented, with CDKN1A/p21 being the top miRNAs- targeted gene. Interestingly, the levels of onco-miR-17 locus coded miRNAs (miR-17-5p and miR-20a) were decreased upon TAF15 depletion and shown to affect the post-transcriptional regulation of TAF15-dependent genes, such as CDKN1A/p21. Thus, our results demonstrate that TAF15 is required to regulate gene expression of cell cycle regulatory genes post-transcriptionally through a pathway involving miRNAs. The findings that high TAF15 levels are needed for rapid cellular proliferation and that endogenous TAF15 levels decrease during differentiation strongly suggest that TAF15 is a key regulator of maintaining a highly proliferative rate of cellular homeostasis. Oncogene (2013) 32, 4646–4655; doi:10.1038/onc.2012.490; published online 5 November 2012 Keywords: FUS/EWS/TAF15 (FET) proteins; miRNAs; transcription; proliferation; neuronal differentiation; neuroblastoma INTRODUCTION possible role of TAF15 in additional steps of RNA metabolism. -
Mechanisms of Mrna Polyadenylation
Turkish Journal of Biology Turk J Biol (2016) 40: 529-538 http://journals.tubitak.gov.tr/biology/ © TÜBİTAK Review Article doi:10.3906/biy-1505-94 Mechanisms of mRNA polyadenylation Hızlan Hıncal AĞUŞ, Ayşe Elif ERSON BENSAN* Department of Biology, Arts and Sciences, Middle East Technical University, Ankara, Turkey Received: 26.05.2015 Accepted/Published Online: 21.08.2015 Final Version: 18.05.2016 Abstract: mRNA 3’-end processing involves the addition of a poly(A) tail based on the recognition of the poly(A) signal and subsequent cleavage of the mRNA at the poly(A) site. Alternative polyadenylation (APA) is emerging as a novel mechanism of gene expression regulation in normal and in disease states. APA results from the recognition of less canonical proximal or distal poly(A) signals leading to changes in the 3’ untranslated region (UTR) lengths and even in some cases changes in the coding sequence of the distal part of the transcript. Consequently, RNA-binding proteins and/or microRNAs may differentially bind to shorter or longer isoforms. These changes may eventually alter the stability, localization, and/or translational efficiency of the mRNAs. Overall, the 3’ UTRs are gaining more attention as they possess a significant posttranscriptional regulation potential guided by APA, microRNAs, and RNA-binding proteins. Here we provide an overview of the recent developments in the APA field in connection with cancer as a potential oncogene activator and/or tumor suppressor silencing mechanism. A better understanding of the extent and significance of APA deregulation will pave the way to possible new developments to utilize the APA machinery and its downstream effects in cancer cells for diagnostic and therapeutic applications. -
Related Regulators of 3′ UTR Processing with KAPAC Andreas J
Gruber et al. Genome Biology (2018) 19:44 https://doi.org/10.1186/s13059-018-1415-3 METHOD Open Access Discovery of physiological and cancer- related regulators of 3′ UTR processing with KAPAC Andreas J. Gruber† , Ralf Schmidt†, Souvik Ghosh, Georges Martin, Andreas R. Gruber, Erik van Nimwegen and Mihaela Zavolan* Abstract 3′ Untranslated regions (3' UTRs) length is regulated in relation to cellular state. To uncover key regulators of poly(A) site use in specific conditions, we have developed PAQR, a method for quantifying poly(A) site use from RNA sequencing data and KAPAC, an approach that infers activities of oligomeric sequence motifs on poly(A) site choice. Application of PAQR and KAPAC to RNA sequencing data from normal and tumor tissue samples uncovers motifs that can explain changes in cleavage and polyadenylation in specific cancers. In particular, our analysis points to polypyrimidine tract binding protein 1 as a regulator of poly(A) site choice in glioblastoma. Keywords: Cleavage and polyadenylation, APA, CFIm, KAPAC, PAQR, HNRNPC, PTBP1, Prostate adenocarcinoma, Glioblastoma, Colon adenocarcinoma Background signal, consisting of the CPSF1, CPSF4, FIP1L1, and The 3′ ends of most eukaryotic mRNAs are generated WDR33 proteins, has been identified [6, 7]. through endonucleolytic cleavage and polyadenylation Most genes have multiple poly(A) sites (PAS), which (CPA) [1–3]. These steps are carried out in mammalian are differentially processed across cell types [8], likely cells by a 3′ end processing complex composed of the due to cell type-specific interactions with RNA-binding cleavage and polyadenylation specificity factor (which in- proteins (RBPs). The length of 3′ UTRs is most strongly cludes the proteins CPSF1 (also known as CPSF160), dependent on the mammalian cleavage factor I (CFIm), CPSF2 (CPSF100), CPSF3 (CPSF73), CPSF4 (CPSF30), which promotes the use of distal poly(A) sites [5, 9–12]. -
Development and Validation of an RNA Binding Protein- Associated Prognostic Model for Hepatocellular Carcinoma
Journal of Clinical and Translational Hepatology 2021 DOI: 10.14218/JCTH.2020.00103 Original Article Development and Validation of an RNA Binding Protein- associated Prognostic Model for Hepatocellular Carcinoma Hao Zhang , Peng Xia, Weijie Ma and Yufeng Yuan* Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China Received: 7 November 2020 | Revised: 24 February 2021 | Accepted: 26 March 2021 | Published: 13 April 2021 Abstract ated prognostic model for hepatocellular carcinoma. J Clin Transl Hepatol 2021. doi: 10.14218/JCTH.2020.00103. Background and Aims: The survival rate of patients with hepatocellular carcinoma is variable. The abnormal expres- sion of RNA-binding proteins (RBPs) is closely related to the occurrence and development of malignant tumors. The pri- Introduction mary aim of this study was to identify RBPs related to the prognosis of liver cancer and to construct a prognostic model Worldwide, liver cancer is the fourth leading cause of can- of liver cancer. Methods: We downloaded the hepatocellular cer-related deaths and has the sixth highest incidence.1 carcinoma gene sequencing data from The Cancer Genome It is estimated that 840,000 new cases of liver cancer are Atlas (cancergenome.nih.gov/) database, constructed a diagnosed and at least 780,000 people die of liver cancer protein-protein interaction network, and used Cytoscape to every year, with China accounting for 47% of the total num- realize the visualization. From among 325 abnormally ex- ber of liver cancer cases as well as the related mortality.2,3 pressed genes for RBPs, 9 (XPO5, enhancer of zeste 2 poly- Hepatocellular carcinoma (HCC) is the predominant type of comb repressive complex 2 subunit [EZH2], CSTF2, BRCA1, primary liver cancer, accounting for approximately 90% of RRP12, MRPL54, EIF2AK4, PPARGC1A, and SEPSECS) were all liver cancer cases.4 Although great progress has been selected for construction of the prognostic model.