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MARCH5 Requires MTCH2 to Coordinate Proteasomal Turnover of the MCL1:NOXA Complex
Cell Death & Differentiation (2020) 27:2484–2499 https://doi.org/10.1038/s41418-020-0517-0 ARTICLE MARCH5 requires MTCH2 to coordinate proteasomal turnover of the MCL1:NOXA complex 1,2 1,2,5 1,2 1,2 1,2,3 1,2 Tirta Mario Djajawi ● Lei Liu ● Jia-nan Gong ● Allan Shuai Huang ● Ming-jie Luo ● Zhen Xu ● 4 1,2 1,2 1,2 Toru Okamoto ● Melissa J. Call ● David C. S. Huang ● Mark F. van Delft Received: 3 July 2019 / Revised: 6 February 2020 / Accepted: 7 February 2020 / Published online: 24 February 2020 © The Author(s) 2020. This article is published with open access Abstract MCL1, a BCL2 relative, is critical for the survival of many cells. Its turnover is often tightly controlled through both ubiquitin-dependent and -independent mechanisms of proteasomal degradation. Several cell stress signals, including DNA damage and cell cycle arrest, are known to elicit distinct E3 ligases to ubiquitinate and degrade MCL1. Another trigger that drives MCL1 degradation is engagement by NOXA, one of its BH3-only protein ligands, but the mechanism responsible has remained unclear. From an unbiased genome-wide CRISPR-Cas9 screen, we discovered that the ubiquitin E3 ligase MARCH5, the ubiquitin E2 conjugating enzyme UBE2K, and the mitochondrial outer membrane protein MTCH2 co- — fi 1234567890();,: 1234567890();,: operate to mark MCL1 for degradation by the proteasome speci cally when MCL1 is engaged by NOXA. This mechanism of degradation also required the MCL1 transmembrane domain and distinct MCL1 lysine residues to proceed, suggesting that the components likely act on the MCL1:NOXA complex by associating with it in a specific orientation within the mitochondrial outer membrane. -
Mechanisms Controlling Cell Life and Death Decisions
Department of Biological Regulation echanisms controlling cell Atan Gross Yehudit Zaltsman, Mlife and death decisions Natalie Yivgi-Ohana, Iris Kamer, Galia Oberkovitz, Liat Shachnai, Maria Maryanovich Programmed cell death or apoptosis in the extraembryonic (ExEm) region of is essential for both the development E7.5 wild type embryos, and this region and maintenance of tissue homeostasis is largely impaired in the Mtch2/Mimp-/- in multicellular organisms. The BCL-2 embryos. Thus, Mtch2/Mimp might play family members are critical regulators a critical role in the formation of the 972 8 934 3656 of the apoptotic program, whereas ExEm region. To study the connection the caspase proteases are the major between Mtch2/Mimp and apoptosis FAX 972 8 934 4116 executioners of this program. Members we generated Mtch2/Mimp-/- stable [email protected] of the BCL-2 family include both anti- and embryonic stem (ES) cell lines carrying www.weizmann.ac.il/ pro-apoptotic proteins. The BH3-only either an empty vector or Mtch2/Mimp. Biological_Regulation/gross proteins (e.g., BID) are an important Using these lines we demonstrated that subset of the pro-apoptotic proteins the presence of Mtch2/Mimp sensitizes that act as sentinels of intercellular cells to tBID-induced MOMP. Thus, we damage. In our laboratory, we are discovered that Mtch2/Mimp is critical S phase and inhibition of apoptosis focused on elucidating the mechanisms for normal embryonic development, following DNA damage. This surprising that balance between cell life and and is an important positive regulator and new pro-survival function of BID death, and BID is one of our primary of tBID-induced apoptosis at the is regulated by its phosphorylation tools to study these mechanisms. -
Cops5 Safeguards Genomic Stability of Embryonic Stem Cells Through Regulating Cellular Metabolism and DNA Repair
Cops5 safeguards genomic stability of embryonic stem cells through regulating cellular metabolism and DNA repair Peng Lia, Lulu Gaoa, Tongxi Cuia, Weiyu Zhanga, Zixin Zhaoa, and Lingyi Chena,1 aState Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation Center of Tianjin for Medical Epigenetics, Collaborative Innovation Center for Biotherapy, Tianjin Key Laboratory of Protein Sciences, National Demonstration Center for Experimental Biology Education and College of Life Sciences, Nankai University, 300071 Tianjin, China Edited by Janet Rossant, Hospital for Sick Children, University of Toronto, Toronto, Canada, and approved December 24, 2019 (received for review August 29, 2019) The highly conserved COP9 signalosome (CSN), composed of 8 transiently expressed in about 5% of ESCs at a given time, subunits (Cops1 to Cops8), has been implicated in pluripotency promotes rapid telomere elongation by telomere recombination maintenance of human embryonic stem cells (ESCs). Yet, the mech- and regulates genomic stability (11). Induced by genotoxic stress, anism for the CSN to regulate pluripotency remains elusive. We Filia stimulates the PARP1 activity and relocates from centro- previously showed that Cops2, independent of the CSN, is essential somes to DNA damage sites and mitochondria to regulate DDR for the pluripotency maintenance of mouse ESCs. In this study, we and apoptosis (12). Sall4, a pluripotency transcription factor, set out to investigate how Cops5 and Cops8 regulate ESC differ- facilitates the ataxia telangiectasia-mutated activation in re- entiation and tried to establish Cops5 and Cops8 knockout (KO) sponse to DSBs (13). To minimize the ROS-induced genomic ESC lines by CRISPR/Cas9. To our surprise, no Cops5 KO ESC clones DNA damage, ESCs produce lower levels of mitochondrial ROS were identified out of 127 clones, while three Cops8 KO ESC lines and express higher levels of antioxidants than differentiated cells were established out of 70 clones. -
Regulation of Fibroblast Growth Factor-2 Expression and Cell Cycle Progression by an Endogenous Antisense RNA
Genes 2012, 3, 505-520; doi:10.3390/genes3030505 OPEN ACCESS genes ISSN 2073-4425 www.mdpi.com/journal/genes Article Regulation of Fibroblast Growth Factor-2 Expression and Cell Cycle Progression by an Endogenous Antisense RNA Mark Baguma-Nibasheka, Leigh Ann MacFarlane and Paul R. Murphy * Department of Physiology and Biophysics, Faculty of Medicine, Dalhousie University, 5850 College Street, Halifax, NS B3H 4R2, Canada; E-Mails: [email protected] (M.B.-N.); [email protected] (L.A.M.) * Author to whom correspondence should be addressed; E-Mail: [email protected]; Tel.: +1-902-494-1579; Fax: +1-902-494-2050. Received: 27 June 2012; in revised form: 31 July 2012 / Accepted: 15 August 2012 / Published: 16 August 2012 Abstract: Basic fibroblast growth factor (FGF2) is a potent wide-spectrum mitogen whose overexpression is associated with immortalization and unregulated cell proliferation in many tumors. The FGF2 gene locus is bi-directionally transcribed to produce FGF2 P51$IURPWKH³VHQVH´VWUDQGDQGDcis-antisense RNA (NUDT6) from the NUDT6 gene RQWKH³DQWLVHQVH´VWUDQG7KH18'7JHQHHQFRGHVDQXGL[PRWLISURWHLQRIXQNQRZQ function, while its mRNA has been implicated in the post-transcriptional regulation of FGF2 expression. FGF2 and NUDT6 are co-expressed in rat C6 glioma cells, and ectopic overexpression of NUDT6 suppresses cellular FGF2 accumulation and cell cycle progression. However, the role of the endogenous antisense RNA in regulation of FGF2 is unclear. In the present study, we employed siRNA-mediated gene knockdown to examine the role of the endogenous NUDT6 RNA in regulation of FGF2 expression and cell cycle progression. Knockdown of either FGF2 or NUDT6 mRNA was accompanied by a significant (>3 fold) increase in the complementary partner RNA. -
Mitoxplorer, a Visual Data Mining Platform To
mitoXplorer, a visual data mining platform to systematically analyze and visualize mitochondrial expression dynamics and mutations Annie Yim, Prasanna Koti, Adrien Bonnard, Fabio Marchiano, Milena Dürrbaum, Cecilia Garcia-Perez, José Villaveces, Salma Gamal, Giovanni Cardone, Fabiana Perocchi, et al. To cite this version: Annie Yim, Prasanna Koti, Adrien Bonnard, Fabio Marchiano, Milena Dürrbaum, et al.. mitoXplorer, a visual data mining platform to systematically analyze and visualize mitochondrial expression dy- namics and mutations. Nucleic Acids Research, Oxford University Press, 2020, 10.1093/nar/gkz1128. hal-02394433 HAL Id: hal-02394433 https://hal-amu.archives-ouvertes.fr/hal-02394433 Submitted on 4 Dec 2019 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Distributed under a Creative Commons Attribution| 4.0 International License Nucleic Acids Research, 2019 1 doi: 10.1093/nar/gkz1128 Downloaded from https://academic.oup.com/nar/advance-article-abstract/doi/10.1093/nar/gkz1128/5651332 by Bibliothèque de l'université la Méditerranée user on 04 December 2019 mitoXplorer, a visual data mining platform to systematically analyze and visualize mitochondrial expression dynamics and mutations Annie Yim1,†, Prasanna Koti1,†, Adrien Bonnard2, Fabio Marchiano3, Milena Durrbaum¨ 1, Cecilia Garcia-Perez4, Jose Villaveces1, Salma Gamal1, Giovanni Cardone1, Fabiana Perocchi4, Zuzana Storchova1,5 and Bianca H. -
Synthetases SARS and WARS2 Are Implicated in the Etiology of Autosomal Recessive Intellectual Disability
Received: 12 August 2016 Revised: 6 January 2017 Accepted: 17 February 2017 DOI: 10.1002/humu.23205 RESEARCH ARTICLE Mutations of the aminoacyl-tRNA-synthetases SARS and WARS2 are implicated in the etiology of autosomal recessive intellectual disability Luciana Musante1∗ Lucia Püttmann1∗ Kimia Kahrizi2 Masoud Garshasbi1† Hao Hu1‡ Henning Stehr3 Bettina Lipkowitz1 Sabine Otto1 Lars R. Jensen4 Andreas Tzschach1 § Payman Jamali5 Thomas Wienker1 Hossein Najmabadi2 Hans Hilger Ropers1 Andreas W. Kuss4 1Max Planck Institute for Molecular Genetics, Berlin, Germany Abstract 2Genetics Research Center, University of Social Intellectual disability (ID) is the hallmark of an extremely heterogeneous group of disorders that Welfare and Rehabilitation Sciences, Tehran, comprises a wide variety of syndromic and non-syndromic phenotypes. Here, we report on muta- Iran tions in two aminoacyl-tRNA synthetases that are associated with ID in two unrelated Iranian fam- 3 Stanford Cancer Institute, Stanford University, ilies. In the first family, we identified a homozygous missense mutation (c.514G>A, p.Asp172Asn) Stanford, California in the cytoplasmic seryl-tRNA synthetase (SARS) gene. The mutation affects the enzymatic core 4Department of Functional Genomics, domain of the protein and impairs its enzymatic activity, probably leading to reduced cytoplas- University Medicine Greifswald, Greifswald, Germany mic tRNASer concentrations. The mutant protein was predicted to be unstable, which could be 5Shahroud Welfare Organization, Semnan, Iran substantiated by investigating ectopic mutant SARS in transfected HEK293T cells. In the sec- Correspondence ond family, we found a compound heterozygous genotype of the mitochondrial tryptophanyl- Andreas W. Kuss, Department of Functional tRNA synthetase (WARS2) gene, comprising a nonsense mutation (c.325delA, p.Ser109Alafs*15), Genomics, F.-L.-Jahnstr. -
The Landscape of Human Mutually Exclusive Splicing
bioRxiv preprint doi: https://doi.org/10.1101/133215; this version posted May 2, 2017. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-ND 4.0 International license. The landscape of human mutually exclusive splicing Klas Hatje1,2,#,*, Ramon O. Vidal2,*, Raza-Ur Rahman2, Dominic Simm1,3, Björn Hammesfahr1,$, Orr Shomroni2, Stefan Bonn2§ & Martin Kollmar1§ 1 Group of Systems Biology of Motor Proteins, Department of NMR-based Structural Biology, Max-Planck-Institute for Biophysical Chemistry, Göttingen, Germany 2 Group of Computational Systems Biology, German Center for Neurodegenerative Diseases, Göttingen, Germany 3 Theoretical Computer Science and Algorithmic Methods, Institute of Computer Science, Georg-August-University Göttingen, Germany § Corresponding authors # Current address: Roche Pharmaceutical Research and Early Development, Pharmaceutical Sciences, Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd., Basel, Switzerland $ Current address: Research and Development - Data Management (RD-DM), KWS SAAT SE, Einbeck, Germany * These authors contributed equally E-mail addresses: KH: [email protected], RV: [email protected], RR: [email protected], DS: [email protected], BH: [email protected], OS: [email protected], SB: [email protected], MK: [email protected] - 1 - bioRxiv preprint doi: https://doi.org/10.1101/133215; this version posted May 2, 2017. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. -
Zebrafish Oxr1a Knockout Reveals Its Role in Regulating Antioxidant
G C A T T A C G G C A T genes Article Zebrafish Oxr1a Knockout Reveals Its Role in Regulating Antioxidant Defenses and Aging Hao Xu 1, Yu Jiang 2, Sheng Li 2, Lang Xie 1, Yi-Xi Tao 1 and Yun Li 1,2,* 1 Institute of Three Gorges Ecological Fisheries of Chongqing, College of Fisheries, Southwest University, Chongqing 400715, China; [email protected] (H.X.); [email protected] (L.X.); [email protected] (Y.-X.T.) 2 Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, Southwest University, Chongqing 400715, China; [email protected] (Y.J.); [email protected] (S.L.) * Correspondence: [email protected]; Tel.: +86-2368-2519-62 Received: 19 August 2020; Accepted: 21 September 2020; Published: 24 September 2020 Abstract: Oxidation resistance gene 1 (OXR1) is essential for protection against oxidative stress in mammals, but its functions in non-mammalian vertebrates, especially in fish, remain uncertain. Here, we created a homozygous oxr1a-knockout zebrafish via the CRISPR/Cas9 (Clustered Regularly Interspaced Short Palindromic Repeats/CRISPR associated protein 9) system. Compared with / wild-type (WT) zebrafish, oxr1a− − mutants exhibited higher mortality and more apoptotic cells under oxidative stress, and multiple antioxidant genes (i.e., gpx1b, gpx4a, gpx7 and sod3a) involved in detoxifying cellular reactive oxygen species were downregulated significantly. Based on these observations, we conducted a comparative transcriptome analysis of early oxidative stress response. The results show that oxr1a mutation caused more extensive changes in transcriptional networks / compared to WT zebrafish, and several stress response and pro-inflammatory pathways in oxr1a− − mutant zebrafish were strongly induced. -
Oxr1 Improves Pathogenic Cellular Features of ALS-Associated FUS
Human Molecular Genetics, 2015, Vol. 24, No. 12 3529–3544 doi: 10.1093/hmg/ddv104 Advance Access Publication Date: 19 March 2015 Original Article ORIGINAL ARTICLE Oxr1 improves pathogenic cellular features of ALS-associated FUS and TDP-43 mutations Downloaded from https://academic.oup.com/hmg/article/24/12/3529/623195 by guest on 26 July 2021 Mattéa J. Finelli†, Kevin X. Liu†, Yixing Wu, Peter L. Oliver* and Kay E. Davies* MRC Functional Genomics Unit, Department of Physiology, Anatomy and Genetics, University of Oxford, Parks Road, Oxford OX1 3PT, UK *To whom correspondence should be addressed. Tel: +44 1865285880/79; Email: [email protected] (K.E.D.); [email protected] (P.L.O.) Abstract Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease characterized by the loss of motor neuron-like cells. Mutations in the RNA- and DNA-binding proteins, fused in sarcoma (FUS) and transactive response DNA-binding protein 43 kDa (TDP-43), are responsible for 5–10% of familial and 1% of sporadic ALS cases. Importantly, aggregation of misfolded FUS or TDP- 43 is also characteristic of several neurodegenerative disorders in addition to ALS, including frontotemporal lobar degeneration. Moreover, splicing deregulation of FUS and TDP-43 target genes as well as mitochondrial abnormalities are associated with disease-causing FUS and TDP-43 mutants. While progress has been made to understand the functions of these proteins, the exact mechanisms by which FUS and TDP-43 cause ALS remain unknown. Recently, we discovered that, in addition to being up-regulated in spinal cords of ALS patients, the novel protein oxidative resistance 1 (Oxr1) protects neurons from oxidative stress-induced apoptosis. -
Downloaded As a Non-Linear Data Structure Containing Ordered Pairs of 68 Proteins and All the Other Proteins with Which They Interact
bioRxiv preprint doi: https://doi.org/10.1101/854695; this version posted November 27, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC 4.0 International license. Network potential identifies therapeutic miRNA cocktails in Ewings Sarcoma Davis T. Weaver1, 2, *, Kathleen I. Pishas3,*, Drew Williamson4,*, Jessica Scarborough1, 2, Stephen L. Lessnick3, Andrew Dhawan2, 5, †, and Jacob G. Scott1, 2, 6, † 1Case Western Reserve University School of Medicine, Cleveland, OH, 44106, USA 2Translational Hematology Oncology Research, Cleveland Clinic, Cleveland OH, 44106, USA 3Nationwide Children’s Hospital, Columbus, Ohio, 43205 4Department of Pathology, Massachusetts General Hospital, Boston, MA, 02144 5Division of Neurology, Cleveland Clinic, Cleveland Ohio, 44195 6Department of Physics, Case Western Reserve University, Cleveland, OH, 44106, USA *contributed equally †[email protected], [email protected] ABSTRACT Introduction: Micro-RNA (miRNA)-based therapies are an emerging class of cancer therapies with many potential applications in the field owing to their ability to repress multiple, predictable targets and cause widespread changes in a cell signaling network. New miRNA-based oligonucleotide drugs have have shown significant promise for the treatment of cancer in pre-clinical studies. Because of the broad effects miRNAs can have on different cells and tissues, a network science-based approach is well-equipped to evaluate and identify miRNA candidates and combinations of candidates for the repression of key oncogenic targets. Methods: In this work, we present a novel network science-based approach for identification of potential miRNA therapies, using Ewings Sarcoma as a model system. -
Transcriptome Analysis of Human OXR1 Depleted Cells Reveals Its Role
www.nature.com/scientificreports OPEN Transcriptome analysis of human OXR1 depleted cells reveals its role in regulating the p53 signaling Received: 28 July 2015 Accepted: 23 October 2015 pathway Published: 30 November 2015 Mingyi Yang1,2, Xiaolin Lin2,5, Alexander Rowe2, Torbjørn Rognes1,3, Lars Eide2 & Magnar Bjørås1,2,4 The oxidation resistance gene 1 (OXR1) is crucial for protecting against oxidative stress; however, its molecular function is unknown. We employed RNA sequencing to examine the role of human OXR1 for genome wide transcription regulation. In total, in non-treated and hydrogen peroxide exposed HeLa cells, OXR1 depletion resulted in down-regulation of 554 genes and up-regulation of 253 genes. These differentially expressed genes include transcription factors (i.e. HIF1A, SP6, E2F8 and TCF3), antioxidant genes (PRDX4, PTGS1 and CYGB) and numerous genes of the p53 signaling pathway involved in cell-cycle arrest (i.e. cyclin D, CDK6 and RPRM) and apoptosis (i.e. CytC and CASP9). We demonstrated that OXR1 depleted cells undergo cell cycle arrest in G2/M phase during oxidative stress and increase protein expression of the apoptosis initiator protease CASP9. In summary, OXR1 may act as a sensor of cellular oxidative stress to regulate the transcriptional networks required to detoxify reactive oxygen species and modulate cell cycle and apoptosis. Reactive oxygen species (ROS) are readily formed in aerobic organisms and constitute a heterogene- ous group comprising superoxide anions, hydrogen peroxide, hydroxyl radicals and other free radicals, which differ in level between compartments inside the cell. In the cell, ROS may attack DNA causing accumulation of oxidative DNA damage and mutations, which are implicated in diseases such as cancer and neurodegeneration1–3. -
Towards Personalized Medicine in Psychiatry: Focus on Suicide
TOWARDS PERSONALIZED MEDICINE IN PSYCHIATRY: FOCUS ON SUICIDE Daniel F. Levey Submitted to the faculty of the University Graduate School in partial fulfillment of the requirements for the degree Doctor of Philosophy in the Program of Medical Neuroscience, Indiana University April 2017 ii Accepted by the Graduate Faculty, Indiana University, in partial fulfillment of the requirements for the degree of Doctor of Philosophy. Andrew J. Saykin, Psy. D. - Chair ___________________________ Alan F. Breier, M.D. Doctoral Committee Gerry S. Oxford, Ph.D. December 13, 2016 Anantha Shekhar, M.D., Ph.D. Alexander B. Niculescu III, M.D., Ph.D. iii Dedication This work is dedicated to all those who suffer, whether their pain is physical or psychological. iv Acknowledgements The work I have done over the last several years would not have been possible without the contributions of many people. I first need to thank my terrific mentor and PI, Dr. Alexander Niculescu. He has continuously given me advice and opportunities over the years even as he has suffered through my many mistakes, and I greatly appreciate his patience. The incredible passion he brings to his work every single day has been inspirational. It has been an at times painful but often exhilarating 5 years. I need to thank Helen Le-Niculescu for being a wonderful colleague and mentor. I learned a lot about organization and presentation working alongside her, and her tireless work ethic was an excellent example for a new graduate student. I had the pleasure of working with a number of great people over the years. Mikias Ayalew showed me the ropes of the lab and began my understanding of the power of algorithms.