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Schuntermann DB, Jaskolowski M, Reynolds NM, Vargas-Rodriguez O. The central role of transfer RNAs in mistranslation. J Biol Chem 2024; 300:107679. [PMID: 39154912 DOI: 10.1016/j.jbc.2024.107679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 07/22/2024] [Accepted: 07/23/2024] [Indexed: 08/20/2024] Open
Abstract
Transfer RNAs (tRNA) are essential small non-coding RNAs that enable the translation of genomic information into proteins in all life forms. The principal function of tRNAs is to bring amino acid building blocks to the ribosomes for protein synthesis. In the ribosome, tRNAs interact with messenger RNA (mRNA) to mediate the incorporation of amino acids into a growing polypeptide chain following the rules of the genetic code. Accurate interpretation of the genetic code requires tRNAs to carry amino acids matching their anticodon identity and decode the correct codon on mRNAs. Errors in these steps cause the translation of codons with the wrong amino acids (mistranslation), compromising the accurate flow of information from DNA to proteins. Accumulation of mutant proteins due to mistranslation jeopardizes proteostasis and cellular viability. However, the concept of mistranslation is evolving, with increasing evidence indicating that mistranslation can be used as a mechanism for survival and acclimatization to environmental conditions. In this review, we discuss the central role of tRNAs in modulating translational fidelity through their dynamic and complex interplay with translation factors. We summarize recent discoveries of mistranslating tRNAs and describe the underlying molecular mechanisms and the specific conditions and environments that enable and promote mistranslation.
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Affiliation(s)
- Dominik B Schuntermann
- Department of Biology, Institute of Molecular Biology and Biophysics, Zurich, Switzerland
| | - Mateusz Jaskolowski
- Department of Biology, Institute of Molecular Biology and Biophysics, Zurich, Switzerland
| | - Noah M Reynolds
- School of Integrated Sciences, Sustainability, and Public Health, University of Illinois Springfield, Springfield, Illinois, USA
| | - Oscar Vargas-Rodriguez
- Department of Molecular Biology and Biophysics, University of Connecticut Health Center, Farmington, Connecticut, USA.
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2
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Surya A, Bolton BM, Rothe R, Mejia-Trujillo R, Zhao Q, Leonita A, Liu Y, Rangan R, Gorusu Y, Nguyen P, Cenik C, Cenik ES. Cytosolic Ribosomal Protein Haploinsufficiency affects Mitochondrial Morphology and Respiration. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.16.589775. [PMID: 38659761 PMCID: PMC11042305 DOI: 10.1101/2024.04.16.589775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
The interplay between ribosomal protein composition and mitochondrial function is essential for sustaining energy homeostasis. Precise stoichiometric production of ribosomal proteins is crucial to maximize protein synthesis efficiency while reducing the energy costs to the cell. However, the impact of this balance on mitochondrial ATP generation, morphology and function remains unclear. Particularly, the loss of a single copy ribosomal protein gene is observed in Mendelian disorders like Diamond Blackfan Anemia and is common in somatic tumors, yet the implications of this imbalance on mitochondrial function and energy dynamics are still unclear. In this study, we investigated the impact of haploinsufficiency for four ribosomal protein genes implicated in ribosomopathy disorders (rps-10, rpl-5, rpl-33, rps-23) in Caenorhabditis elegans and corresponding reductions in human lymphoblast cells. Our findings uncover significant, albeit variably penetrant, mitochondrial morphological differences across these mutants, alongside an upregulation of glutathione transferases, and SKN-1 dependent increase in oxidative stress resistance, indicative of increased ROS production. Specifically, loss of a single copy of rps-10 in C. elegans led to decreased mitochondrial activity, characterized by lower energy levels and reduced oxygen consumption. A similar reduction in mitochondrial activity and energy levels was observed in human leukemia cells with a 50% reduction in RPS10 transcript levels. Importantly, we also observed alterations in the translation efficiency of nuclear and mitochondrial electron transport chain components in response to reductions in ribosomal protein genes' expression in both C. elegans and human cells. This suggests a conserved mechanism whereby the synthesis of components vital for mitochondrial function are adjusted in the face of compromised ribosomal machinery. Finally, mitochondrial membrane and cytosolic ribosomal components exhibited significant covariation at the RNA and translation efficiency level in lymphoblastoid cells across a diverse group of individuals, emphasizing the interplay between the protein synthesis machinery and mitochondrial energy production. By uncovering the impact of ribosomal protein haploinsufficiency on the translation efficiency of electron transport chain components, mitochondrial physiology, and the adaptive stress responses, we provide evidence for an evolutionarily conserved strategy to safeguard cellular functionality under genetic stress.
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Affiliation(s)
- Agustian Surya
- Department of Molecular Biosciences, University of Texas at Austin, Austin, TX 78712, USA
| | - Blythe Marie Bolton
- Department of Molecular Biosciences, University of Texas at Austin, Austin, TX 78712, USA
| | - Reed Rothe
- Department of Molecular Biosciences, University of Texas at Austin, Austin, TX 78712, USA
| | - Raquel Mejia-Trujillo
- Department of Molecular Biosciences, University of Texas at Austin, Austin, TX 78712, USA
| | - Qiuxia Zhao
- Department of Molecular Biosciences, University of Texas at Austin, Austin, TX 78712, USA
| | - Amanda Leonita
- Department of Molecular Biosciences, University of Texas at Austin, Austin, TX 78712, USA
| | - Yue Liu
- Department of Molecular Biosciences, University of Texas at Austin, Austin, TX 78712, USA
| | - Rekha Rangan
- Department of Molecular Biosciences, University of Texas at Austin, Austin, TX 78712, USA
| | - Yasash Gorusu
- Department of Molecular Biosciences, University of Texas at Austin, Austin, TX 78712, USA
| | - Pamela Nguyen
- Department of Molecular Biosciences, University of Texas at Austin, Austin, TX 78712, USA
| | - Can Cenik
- Department of Molecular Biosciences, University of Texas at Austin, Austin, TX 78712, USA
| | - Elif Sarinay Cenik
- Department of Molecular Biosciences, University of Texas at Austin, Austin, TX 78712, USA
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3
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Wang M, Vulcano S, Xu C, Xie R, Peng W, Wang J, Liu Q, Jia L, Li Z, Li Y. Potentials of ribosomopathy gene as pharmaceutical targets for cancer treatment. J Pharm Anal 2024; 14:308-320. [PMID: 38618250 PMCID: PMC11010632 DOI: 10.1016/j.jpha.2023.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 09/29/2023] [Accepted: 10/07/2023] [Indexed: 04/16/2024] Open
Abstract
Ribosomopathies encompass a spectrum of disorders arising from impaired ribosome biogenesis and reduced functionality. Mutation or dysexpression of the genes that disturb any finely regulated steps of ribosome biogenesis can result in different types of ribosomopathies in clinic, collectively known as ribosomopathy genes. Emerging data suggest that ribosomopathy patients exhibit a significantly heightened susceptibility to cancer. Abnormal ribosome biogenesis and dysregulation of some ribosomopathy genes have also been found to be intimately associated with cancer development. The correlation between ribosome biogenesis or ribosomopathy and the development of malignancies has been well established. This work aims to review the recent advances in the research of ribosomopathy genes among human cancers and meanwhile, to excavate the potential role of these genes, which have not or rarely been reported in cancer, in the disease development across cancers. We plan to establish a theoretical framework between the ribosomopathy gene and cancer development, to further facilitate the potential of these genes as diagnostic biomarker as well as pharmaceutical targets for cancer treatment.
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Affiliation(s)
- Mengxin Wang
- Key Laboratory of Biomaterials and Biofabrication in Tissue Engineering of Jiangxi Province, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
- School of Rehabilitation Medicine, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Stephen Vulcano
- Autoimmunity and Inflammation Program, HSS Research Institute, Hospital for Special Surgery New York, New York, NY, 10021, USA
| | - Changlu Xu
- Division of Oral and Systemic Health Sciences, School of Dentistry, University of California, Los Angeles, CA, 90095, USA
| | - Renjian Xie
- Key Laboratory of Biomaterials and Biofabrication in Tissue Engineering of Jiangxi Province, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
- School of Medical Information Engineering, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Weijie Peng
- Key Laboratory of Biomaterials and Biofabrication in Tissue Engineering of Jiangxi Province, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Jie Wang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, Institute for Liver Diseases of Anhui Medical University, School of Pharmacy, Anhui Medical University, Hefei, 230032, China
| | - Qiaojun Liu
- Key Laboratory of Biomaterials and Biofabrication in Tissue Engineering of Jiangxi Province, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
- School of Basic Medicine, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Lee Jia
- Institute of Oceanography, Minjiang University, Fuzhou, 350108, China
| | - Zhi Li
- Division of Oral and Systemic Health Sciences, School of Dentistry, University of California, Los Angeles, CA, 90095, USA
| | - Yumei Li
- Key Laboratory of Biomaterials and Biofabrication in Tissue Engineering of Jiangxi Province, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
- School of Basic Medicine, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
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4
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Da Costa L, Mohandas N, David-NGuyen L, Platon J, Marie I, O'Donohue MF, Leblanc T, Gleizes PE. Diamond-Blackfan anemia, the archetype of ribosomopathy: How distinct is it from the other constitutional ribosomopathies? Blood Cells Mol Dis 2024:102838. [PMID: 38413287 DOI: 10.1016/j.bcmd.2024.102838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 02/16/2024] [Accepted: 02/16/2024] [Indexed: 02/29/2024]
Abstract
Diamond-Blackfan anemia (DBA) was the first ribosomopathy described in humans. DBA is a congenital hypoplastic anemia, characterized by macrocytic aregenerative anemia, manifesting by differentiation blockage between the BFU-e/CFU-e developmental erythroid progenitor stages. In 50 % of the DBA cases, various malformations are noted. Strikingly, for a hematological disease with a relative erythroid tropism, DBA is due to ribosomal haploinsufficiency in 24 different ribosomal protein (RP) genes. A few other genes have been described in DBA-like disorders, but they do not fit into the classical DBA phenotype (Sankaran et al., 2012; van Dooijeweert et al., 2022; Toki et al., 2018; Kim et al., 2017 [1-4]). Haploinsufficiency in a RP gene leads to defective ribosomal RNA (rRNA) maturation, which is a hallmark of DBA. However, the mechanistic understandings of the erythroid tropism defect in DBA are still to be fully defined. Erythroid defect in DBA has been recently been linked in a non-exclusive manner to a number of mechanisms that include: 1) a defect in translation, in particular for the GATA1 erythroid gene; 2) a deficit of HSP70, the GATA1 chaperone, and 3) free heme toxicity. In addition, p53 activation in response to ribosomal stress is involved in DBA pathophysiology. The DBA phenotype may thus result from the combined contributions of various actors, which may explain the heterogenous phenotypes observed in DBA patients, even within the same family.
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Affiliation(s)
- L Da Costa
- Service d'Hématologie Biologique (Hematology Diagnostic Lab), AP-HP, Hôpital Bicêtre, F-94270 Le Kremlin-Bicêtre, France; University of Paris Saclay, F-94270 Le Kremlin-Bicêtre, France; University of Paris Cité, F-75010 Paris, France; University of Picardie Jules Verne, F-80000 Amiens, France; Inserm U1170, IGR, F-94805 Villejuif/HEMATIM UR4666, F-80000 Amiens, France; Laboratory of Excellence for Red Cells, LABEX GR-Ex, F-75015 Paris, France.
| | | | - Ludivine David-NGuyen
- Service d'Hématologie Biologique (Hematology Diagnostic Lab), AP-HP, Hôpital Bicêtre, F-94270 Le Kremlin-Bicêtre, France
| | - Jessica Platon
- Inserm U1170, IGR, F-94805 Villejuif/HEMATIM UR4666, F-80000 Amiens, France
| | - Isabelle Marie
- Service d'Hématologie Biologique (Hematology Diagnostic Lab), AP-HP, Hôpital Bicêtre, F-94270 Le Kremlin-Bicêtre, France
| | - Marie Françoise O'Donohue
- Molecular, Cellular and Developmental biology department (MCD), Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Thierry Leblanc
- Service d'immuno-hématologie pédiatrique, Hôpital Robert-Debré, F-75019 Paris, France
| | - Pierre-Emmanuel Gleizes
- Molecular, Cellular and Developmental biology department (MCD), Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, Toulouse, France
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5
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Iskander D, Roy NBA, Payne E, Drasar E, Hennessy K, Harrington Y, Christodoulidou C, Karadimitris A, Batkin L, de la Fuente J. Diamond-Blackfan anemia in adults: In pursuit of a common approach for a rare disease. Blood Rev 2023; 61:101097. [PMID: 37263874 DOI: 10.1016/j.blre.2023.101097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 04/19/2023] [Accepted: 05/07/2023] [Indexed: 06/03/2023]
Abstract
Diamond-Blackfan anemia (DBA) is a rare bone marrow failure syndrome, usually caused by loss-of function variants in genes encoding ribosomal proteins. The hallmarks of DBA are anemia, congenital anomalies and cancer predisposition. Although DBA usually presents in childhood, the prevalence in later life is increasing due to an expanding repertoire of implicated genes, improvements in genetic diagnosis and increasing life expectancy. Adult patients uniquely suffer the manifestations of end-organ damage caused by the disease and its treatment, and transition to adulthood poses specific issues in disease management. To standardize and optimize care for this rare disease, in this review we provide updated guidance on the diagnosis and management of DBA, with a specific focus on older adolescents and adults. Recommendations are based upon published literature and our pooled clinical experience from three centres in the United Kingdom (U·K.). Uniquely we have also solicited and incorporated the views of affected families, represented by the independent patient organization, DBA U.K.
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Affiliation(s)
- Deena Iskander
- Centre for Haematology, Department of Immunology & Inflammation, Imperial College London, London W12 0NN, UK.
| | - Noémi B A Roy
- Oxford University Hospitals NHS Foundation Trust and University of Oxford, OX3 9DU, UK
| | - Elspeth Payne
- UCL Cancer Institute, Dept of Hematology, London WC1 E6BT, UK; Dept of Hematology, University College Hospital London, NW1 2BU, UK
| | - Emma Drasar
- Whittington Health NHS Trust and University College Hospital London, N19 5NF, UK
| | - Kelly Hennessy
- Department of Paediatrics, St. Mary's Hospital, Imperial College Healthcare NHS Trust, London W2 1NY, UK
| | - Yvonne Harrington
- Department of Paediatrics, St. Mary's Hospital, Imperial College Healthcare NHS Trust, London W2 1NY, UK
| | - Chrysi Christodoulidou
- Centre for Haematology, Department of Immunology & Inflammation, Imperial College London, London W12 0NN, UK
| | - Anastasios Karadimitris
- Centre for Haematology, Department of Immunology & Inflammation, Imperial College London, London W12 0NN, UK
| | - Leisa Batkin
- DBA, UK 71-73 Main Street, Palterton, Chesterfield, S44 6UR, UK
| | - Josu de la Fuente
- Department of Paediatrics, St. Mary's Hospital, Imperial College Healthcare NHS Trust, London W2 1NY, UK.
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6
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Cerulo L, Pezzella N, Caruso FP, Parente P, Remo A, Giordano G, Forte N, Busselez J, Boschi F, Galiè M, Franco B, Pancione M. Single-cell proteo-genomic reveals a comprehensive map of centrosome-associated spliceosome components. iScience 2023; 26:106602. [PMID: 37250316 PMCID: PMC10214398 DOI: 10.1016/j.isci.2023.106602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 01/16/2023] [Accepted: 03/29/2023] [Indexed: 05/31/2023] Open
Abstract
Ribonucleoprotein (RNP) condensates are crucial for controlling RNA metabolism and splicing events in animal cells. We used spatial proteomics and transcriptomic to elucidate RNP interaction networks at the centrosome, the main microtubule-organizing center in animal cells. We found a number of cell-type specific centrosome-associated spliceosome interactions localized in subcellular structures involved in nuclear division and ciliogenesis. A component of the nuclear spliceosome BUD31 was validated as an interactor of the centriolar satellite protein OFD1. Analysis of normal and disease cohorts identified the cholangiocarcinoma as target of centrosome-associated spliceosome alterations. Multiplexed single-cell fluorescent microscopy for the centriole linker CEP250 and spliceosome components including BCAS2, BUD31, SRSF2 and DHX35 recapitulated bioinformatic predictions on the centrosome-associated spliceosome components tissue-type specific composition. Collectively, centrosomes and cilia act as anchor for cell-type specific spliceosome components, and provide a helpful reference for explore cytoplasmic condensates functions in defining cell identity and in the origin of rare diseases.
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Affiliation(s)
- Luigi Cerulo
- Bioinformatics Laboratory, BIOGEM scrl, Ariano Irpino, Avellino, Italy
- Department of Sciences and Technologies, University of Sannio, Benevento, Italy
| | - Nunziana Pezzella
- Telethon Institute of Genetics and Medicine (TIGEM), Via Campi Flegrei, 34, Pozzuoli, 80078 Naples, Italy
- School for Advanced Studies, Genomics and Experimental Medicine Program, Naples, Italy
| | - Francesca Pia Caruso
- Bioinformatics Laboratory, BIOGEM scrl, Ariano Irpino, Avellino, Italy
- Department of Sciences and Technologies, University of Sannio, Benevento, Italy
| | - Paola Parente
- Unit of Pathology, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, Foggia, Italy
| | - Andrea Remo
- Pathology Unit, Mater Salutis Hospital AULSS9, “Scaligera”, 37122 Verona, Italy
| | - Guido Giordano
- Unit of Medical Oncology and Biomolecular Therapy, Department of Medical and Surgical Sciences, University of Foggia, Policlinico Riuniti, 71122 Foggia, Italy
| | - Nicola Forte
- Department of Clinical Pathology, Fatebenefratelli Hospital, 82100 Benevento, Italy
| | - Johan Busselez
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France
| | - Federico Boschi
- Department of Computer Science, University of Verona, Strada Le Grazie 8, Verona, Italy
| | - Mirco Galiè
- Department of Neuroscience, Biomedicine and Movement, University of Verona, Verona, Italy
| | - Brunella Franco
- Telethon Institute of Genetics and Medicine (TIGEM), Via Campi Flegrei, 34, Pozzuoli, 80078 Naples, Italy
- School for Advanced Studies, Genomics and Experimental Medicine Program, Naples, Italy
- Medical Genetics, Department of Translational Medicine, University of Naples “Federico II”, Via Sergio Pansini, 80131 Naples, Italy
| | - Massimo Pancione
- Department of Sciences and Technologies, University of Sannio, Benevento, Italy
- Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, Complutense University Madrid, 28040 Madrid, Spain
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7
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Yang D, Li X, Yu B, Peng H. Qualitative lysine crotonylation and 2-hydroxyisobutyrylation analysis in the ovarian tissue proteome of piglets. Front Cell Dev Biol 2023; 11:1176212. [PMID: 37255595 PMCID: PMC10225730 DOI: 10.3389/fcell.2023.1176212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 04/26/2023] [Indexed: 06/01/2023] Open
Abstract
Ovarian function influences diverse aspects of fertility and reproductive lifespan by regulating oocyte supply and hormone secretion. Lysine crotonylation (Kcr) and lysine 2-hydroxyisobutyryllysine (Khib) are newly identified post-translational modifications and function as regulators of transactivation in mammals. In this study, we investigated protein post-translational Kcr and 2-hydroxyisobutyrylation in the ovarian tissues of piglets. A total of 653 overlapping proteins among differentially modified proteins were identified for both crotonylation and 2-hydroxyisobutyrylation. Gene Ontology enrichment analysis indicated that 653 DMPs were significantly enriched in nucleosome organization, chromatin assembly, DNA packaging, peptide biosynthetic process and peptide metabolic process. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis showed enrichment in proteasome, ribosome, fatty acid elongation, pyruvate metabolism and pentose phosphate pathway. Fifteen DMPs were identified in the proteasome pathway, of which PSMC6 and PSMB7 were the core proteins. In addition, the significant changes in Kcr and Khib in the complex subunits of the proteasome may be involved in cell cycle processes during oocyte development. Forty-four DMPs with both Kcr and Khib modifications were related to the ribosome pathway. The regulated ribosome pathway may indicate that Kcr and Khib comodified proteins participate in protein synthesis during oocyte development. Western blot and immunofluorescence staining results supported the reliability of the sequencing results. Our results may provide a valuable resource to help illuminate the roles of Kcr and Khib in ovarian development and may serve as new tools to better control diseases.
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Rodnina MV. Decoding and Recoding of mRNA Sequences by the Ribosome. Annu Rev Biophys 2023; 52:161-182. [PMID: 37159300 DOI: 10.1146/annurev-biophys-101922-072452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Faithful translation of messenger RNA (mRNA) into protein is essential to maintain protein homeostasis in the cell. Spontaneous translation errors are very rare due to stringent selection of cognate aminoacyl transfer RNAs (tRNAs) and the tight control of the mRNA reading frame by the ribosome. Recoding events, such as stop codon readthrough, frameshifting, and translational bypassing, reprogram the ribosome to make intentional mistakes and produce alternative proteins from the same mRNA. The hallmark of recoding is the change of ribosome dynamics. The signals for recoding are built into the mRNA, but their reading depends on the genetic makeup of the cell, resulting in cell-specific changes in expression programs. In this review, I discuss the mechanisms of canonical decoding and tRNA-mRNA translocation; describe alternative pathways leading to recoding; and identify the links among mRNA signals, ribosome dynamics, and recoding.
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Affiliation(s)
- Marina V Rodnina
- Department of Physical Biochemistry, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany;
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9
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Zhang J, Ji G, Gao X, Guan J. Single-nucleus gene and gene set expression-based similarity network fusion identifies autism molecular subtypes. BMC Bioinformatics 2023; 24:142. [PMID: 37041460 PMCID: PMC10091652 DOI: 10.1186/s12859-023-05278-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 04/07/2023] [Indexed: 04/13/2023] Open
Abstract
BACKGROUND Autism spectrum disorder (ASD) is a complex neurodevelopmental disorder that is highly phenotypically and genetically heterogeneous. With the accumulation of biological sequencing data, more and more studies shift to molecular subtype-first approach, from identifying molecular subtypes based on genetic and molecular data to linking molecular subtypes with clinical manifestation, which can reduce heterogeneity before phenotypic profiling. RESULTS In this study, we perform similarity network fusion to integrate gene and gene set expression data of multiple human brain cell types for ASD molecular subtype identification. Then we apply subtype-specific differential gene and gene set expression analyses to study expression patterns specific to molecular subtypes in each cell type. To demonstrate the biological and practical significance, we analyze the molecular subtypes, investigate their correlation with ASD clinical phenotype, and construct ASD molecular subtype prediction models. CONCLUSIONS The identified molecular subtype-specific gene and gene set expression may be used to differentiate ASD molecular subtypes, facilitating the diagnosis and treatment of ASD. Our method provides an analytical pipeline for the identification of molecular subtypes and even disease subtypes of complex disorders.
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Affiliation(s)
- Junjie Zhang
- Department of Automation, Xiamen University, Xiamen, Fujian, China
| | - Guoli Ji
- Department of Automation, Xiamen University, Xiamen, Fujian, China
- National Institute for Data Science in Health and Medicine, Xiamen University, Xiamen, Fujian, China
| | - Xilin Gao
- Xiamen Humanity Hospital, Fujian Medical University, Xiamen, Fujian, China.
| | - Jinting Guan
- Department of Automation, Xiamen University, Xiamen, Fujian, China.
- National Institute for Data Science in Health and Medicine, Xiamen University, Xiamen, Fujian, China.
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10
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Proteomic and Bioinformatic Tools to Identify Potential Hub Proteins in the Audiogenic Seizure-Prone Hamster GASH/Sal. Diagnostics (Basel) 2023; 13:diagnostics13061048. [PMID: 36980356 PMCID: PMC10047193 DOI: 10.3390/diagnostics13061048] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/03/2023] [Accepted: 03/06/2023] [Indexed: 03/12/2023] Open
Abstract
The GASH/Sal (Genetic Audiogenic Seizure Hamster, Salamanca) is a model of audiogenic seizures with the epileptogenic focus localized in the inferior colliculus (IC). The sound-induced seizures exhibit a short latency (7–9 s), which implies innate protein disturbances in the IC as a basis for seizure susceptibility and generation. Here, we aim to study the protein profile in the GASH/Sal IC in comparison to controls. Protein samples from the IC were processed for enzymatic digestion and then analyzed by mass spectrometry in Data-Independent Acquisition mode. After identifying the proteins using the UniProt database, we selected those with differential expression and performed ontological analyses, as well as gene-protein interaction studies using bioinformatics tools. We identified 5254 proteins; among them, 184 were differentially expressed proteins (DEPs), with 126 upregulated and 58 downregulated proteins, and 10 of the DEPs directly related to epilepsy. Moreover, 12 and 7 proteins were uniquely found in the GASH/Sal or the control. The results indicated a protein profile alteration in the epileptogenic nucleus that might underlie the inborn occurring audiogenic seizures in the GASH/Sal model. In summary, this study supports the use of bioinformatics methods in proteomics to delve into the relationship between molecular-level protein mechanisms and the pathobiology of rodent models of audiogenic seizures.
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11
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Maehama T, Nishio M, Otani J, Mak TW, Suzuki A. Nucleolar stress: Molecular mechanisms and related human diseases. Cancer Sci 2023; 114:2078-2086. [PMID: 36762786 PMCID: PMC10154868 DOI: 10.1111/cas.15755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 01/29/2023] [Accepted: 02/06/2023] [Indexed: 02/11/2023] Open
Abstract
Ribosome biogenesis in the nucleolus is an important process that consumes 80% of a cell's intracellular energy supply. Disruption of this process results in nucleolar stress, triggering the activation of molecular systems that respond to this stress to maintain homeostasis. Although nucleolar stress was originally thought to be caused solely by abnormalities of ribosomal RNA (rRNA) and ribosomal proteins (RPs), an accumulating body of more current evidence suggests that many other factors, including the DNA damage response and oncogenic stress, are also involved in nucleolar stress response signaling. Cells reacting to nucleolar stress undergo cell cycle arrest or programmed death, mainly driven by activation of the tumor suppressor p53. This observation has nominated nucleolar stress as a promising target for cancer therapy. However, paradoxically, some RP mutations have also been implicated in cancer initiation and progression, necessitating caution. In this article, we summarize recent findings on the molecular mechanisms of nucleolar stress and the human ribosomal diseases and cancers that arise in its wake.
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Affiliation(s)
- Tomohiko Maehama
- Division of Molecular and Cellular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Miki Nishio
- Division of Molecular and Cellular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Junji Otani
- Division of Molecular and Cellular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Tak Wah Mak
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada.,Departments of Immunology and Medical Biophysics, University of Toronto, Toronto, Ontario, Canada.,Department of Pathology, LKS Faculty of Medicine, University of Hong Kong, Hong Kong, Hong Kong
| | - Akira Suzuki
- Division of Molecular and Cellular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
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12
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Volkova YL, Pickel C, Jucht AE, Wenger RH, Scholz CC. The Asparagine Hydroxylase FIH: A Unique Oxygen Sensor. Antioxid Redox Signal 2022; 37:913-935. [PMID: 35166119 DOI: 10.1089/ars.2022.0003] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Significance: Limited oxygen availability (hypoxia) commonly occurs in a range of physiological and pathophysiological conditions, including embryonic development, physical exercise, inflammation, and ischemia. It is thus vital for cells and tissues to monitor their local oxygen availability to be able to adjust in case the oxygen supply is decreased. The cellular oxygen sensor factor inhibiting hypoxia-inducible factor (FIH) is the only known asparagine hydroxylase with hypoxia sensitivity. FIH uniquely combines oxygen and peroxide sensitivity, serving as an oxygen and oxidant sensor. Recent Advances: FIH was first discovered in the hypoxia-inducible factor (HIF) pathway as a modulator of HIF transactivation activity. Several other FIH substrates have now been identified outside the HIF pathway. Moreover, FIH enzymatic activity is highly promiscuous and not limited to asparagine hydroxylation. This includes the FIH-mediated catalysis of an oxygen-dependent stable (likely covalent) bond formation between FIH and selected substrate proteins (called oxomers [oxygen-dependent stable protein oligomers]). Critical Issues: The (patho-)physiological function of FIH is only beginning to be understood and appears to be complex. Selective pharmacologic inhibition of FIH over other oxygen sensors is possible, opening new avenues for therapeutic targeting of hypoxia-associated diseases, increasing the interest in its (patho-)physiological relevance. Future Directions: The contribution of FIH enzymatic activity to disease development and progression should be analyzed in more detail, including the assessment of underlying molecular mechanisms and relevant FIH substrate proteins. Also, the molecular mechanism(s) involved in the physiological functions of FIH remain(s) to be determined. Furthermore, the therapeutic potential of recently developed FIH-selective pharmacologic inhibitors will need detailed assessment. Antioxid. Redox Signal. 37, 913-935.
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Affiliation(s)
- Yulia L Volkova
- Institute of Physiology, University of Zurich, Zurich, Switzerland
| | - Christina Pickel
- Institute of Physiology, University of Zurich, Zurich, Switzerland
| | | | - Roland H Wenger
- Institute of Physiology, University of Zurich, Zurich, Switzerland
| | - Carsten C Scholz
- Institute of Physiology, University of Zurich, Zurich, Switzerland
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13
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Deliu LP, Turingan M, Jadir D, Lee B, Ghosh A, Grewal SS. Serotonergic neuron ribosomal proteins regulate the neuroendocrine control of Drosophila development. PLoS Genet 2022; 18:e1010371. [PMID: 36048889 PMCID: PMC9473637 DOI: 10.1371/journal.pgen.1010371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 09/14/2022] [Accepted: 07/29/2022] [Indexed: 11/21/2022] Open
Abstract
The regulation of ribosome function is a conserved mechanism of growth control. While studies in single cell systems have defined how ribosomes contribute to cell growth, the mechanisms that link ribosome function to organismal growth are less clear. Here we explore this issue using Drosophila Minutes, a class of heterozygous mutants for ribosomal proteins. These animals exhibit a delay in larval development caused by decreased production of the steroid hormone ecdysone, the main regulator of larval maturation. We found that this developmental delay is not caused by decreases in either global ribosome numbers or translation rates. Instead, we show that they are due in part to loss of Rp function specifically in a subset of serotonin (5-HT) neurons that innervate the prothoracic gland to control ecdysone production. We find that these effects do not occur due to altered protein synthesis or proteostasis, but that Minute animals have reduced expression of synaptotagmin, a synaptic vesicle protein, and that the Minute developmental delay can be partially reversed by overexpression of synaptic vesicle proteins in 5-HTergic cells. These results identify a 5-HT cell-specific role for ribosomal function in the neuroendocrine control of animal growth and development.
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Affiliation(s)
- Lisa Patricia Deliu
- Clark H Smith Brain Tumour Centre, Arnie Charbonneau Cancer Institute, Alberta Children’s Hospital Research Institute, and Department of Biochemistry and Molecular Biology Calgary, University of Calgary, Alberta, Canada
| | - Michael Turingan
- Clark H Smith Brain Tumour Centre, Arnie Charbonneau Cancer Institute, Alberta Children’s Hospital Research Institute, and Department of Biochemistry and Molecular Biology Calgary, University of Calgary, Alberta, Canada
| | - Deeshpaul Jadir
- Clark H Smith Brain Tumour Centre, Arnie Charbonneau Cancer Institute, Alberta Children’s Hospital Research Institute, and Department of Biochemistry and Molecular Biology Calgary, University of Calgary, Alberta, Canada
| | - Byoungchun Lee
- Clark H Smith Brain Tumour Centre, Arnie Charbonneau Cancer Institute, Alberta Children’s Hospital Research Institute, and Department of Biochemistry and Molecular Biology Calgary, University of Calgary, Alberta, Canada
| | - Abhishek Ghosh
- Clark H Smith Brain Tumour Centre, Arnie Charbonneau Cancer Institute, Alberta Children’s Hospital Research Institute, and Department of Biochemistry and Molecular Biology Calgary, University of Calgary, Alberta, Canada
| | - Savraj Singh Grewal
- Clark H Smith Brain Tumour Centre, Arnie Charbonneau Cancer Institute, Alberta Children’s Hospital Research Institute, and Department of Biochemistry and Molecular Biology Calgary, University of Calgary, Alberta, Canada
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14
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Liu ZSJ, Truong TTT, Bortolasci CC, Spolding B, Panizzutti B, Swinton C, Kim JH, Kidnapillai S, Richardson MF, Gray L, Dean OM, McGee SL, Berk M, Walder K. Effects of Psychotropic Drugs on Ribosomal Genes and Protein Synthesis. Int J Mol Sci 2022; 23:ijms23137180. [PMID: 35806181 PMCID: PMC9266764 DOI: 10.3390/ijms23137180] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/26/2022] [Accepted: 06/26/2022] [Indexed: 02/04/2023] Open
Abstract
Altered protein synthesis has been implicated in the pathophysiology of several neuropsychiatric disorders, particularly schizophrenia. Ribosomes are the machinery responsible for protein synthesis. However, there remains little information on whether current psychotropic drugs affect ribosomes and contribute to their therapeutic effects. We treated human neuronal-like (NT2-N) cells with amisulpride (10 µM), aripiprazole (0.1 µM), clozapine (10 µM), lamotrigine (50 µM), lithium (2.5 mM), quetiapine (50 µM), risperidone (0.1 µM), valproate (0.5 mM) or vehicle control for 24 h. Transcriptomic and gene set enrichment analysis (GSEA) identified that the ribosomal pathway was altered by these drugs. We found that three of the eight drugs tested significantly decreased ribosomal gene expression, whilst one increased it. Most changes were observed in the components of cytosolic ribosomes and not mitochondrial ribosomes. Protein synthesis assays revealed that aripiprazole, clozapine and lithium all decreased protein synthesis. Several currently prescribed psychotropic drugs seem to impact ribosomal gene expression and protein synthesis. This suggests the possibility of using protein synthesis inhibitors as novel therapeutic agents for neuropsychiatric disorders.
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Affiliation(s)
- Zoe S. J. Liu
- The Institute for Mental and Physical Health and Clinical Translation (IMPACT), School of Medicine, Deakin University, Geelong 3220, Australia; (Z.S.J.L.); (T.T.T.T.); (C.C.B.); (B.S.); (B.P.); (C.S.); (J.H.K.); (S.K.); (L.G.); (O.M.D.); (S.L.M.); (M.B.)
| | - Trang T. T. Truong
- The Institute for Mental and Physical Health and Clinical Translation (IMPACT), School of Medicine, Deakin University, Geelong 3220, Australia; (Z.S.J.L.); (T.T.T.T.); (C.C.B.); (B.S.); (B.P.); (C.S.); (J.H.K.); (S.K.); (L.G.); (O.M.D.); (S.L.M.); (M.B.)
| | - Chiara C. Bortolasci
- The Institute for Mental and Physical Health and Clinical Translation (IMPACT), School of Medicine, Deakin University, Geelong 3220, Australia; (Z.S.J.L.); (T.T.T.T.); (C.C.B.); (B.S.); (B.P.); (C.S.); (J.H.K.); (S.K.); (L.G.); (O.M.D.); (S.L.M.); (M.B.)
| | - Briana Spolding
- The Institute for Mental and Physical Health and Clinical Translation (IMPACT), School of Medicine, Deakin University, Geelong 3220, Australia; (Z.S.J.L.); (T.T.T.T.); (C.C.B.); (B.S.); (B.P.); (C.S.); (J.H.K.); (S.K.); (L.G.); (O.M.D.); (S.L.M.); (M.B.)
| | - Bruna Panizzutti
- The Institute for Mental and Physical Health and Clinical Translation (IMPACT), School of Medicine, Deakin University, Geelong 3220, Australia; (Z.S.J.L.); (T.T.T.T.); (C.C.B.); (B.S.); (B.P.); (C.S.); (J.H.K.); (S.K.); (L.G.); (O.M.D.); (S.L.M.); (M.B.)
| | - Courtney Swinton
- The Institute for Mental and Physical Health and Clinical Translation (IMPACT), School of Medicine, Deakin University, Geelong 3220, Australia; (Z.S.J.L.); (T.T.T.T.); (C.C.B.); (B.S.); (B.P.); (C.S.); (J.H.K.); (S.K.); (L.G.); (O.M.D.); (S.L.M.); (M.B.)
| | - Jee Hyun Kim
- The Institute for Mental and Physical Health and Clinical Translation (IMPACT), School of Medicine, Deakin University, Geelong 3220, Australia; (Z.S.J.L.); (T.T.T.T.); (C.C.B.); (B.S.); (B.P.); (C.S.); (J.H.K.); (S.K.); (L.G.); (O.M.D.); (S.L.M.); (M.B.)
- Florey Institute of Neuroscience and Mental Health, Parkville 3010, Australia
| | - Srisaiyini Kidnapillai
- The Institute for Mental and Physical Health and Clinical Translation (IMPACT), School of Medicine, Deakin University, Geelong 3220, Australia; (Z.S.J.L.); (T.T.T.T.); (C.C.B.); (B.S.); (B.P.); (C.S.); (J.H.K.); (S.K.); (L.G.); (O.M.D.); (S.L.M.); (M.B.)
| | - Mark F. Richardson
- Genomics Centre, School of Life and Environmental Sciences, Deakin University, Burwood 3125, Australia;
| | - Laura Gray
- The Institute for Mental and Physical Health and Clinical Translation (IMPACT), School of Medicine, Deakin University, Geelong 3220, Australia; (Z.S.J.L.); (T.T.T.T.); (C.C.B.); (B.S.); (B.P.); (C.S.); (J.H.K.); (S.K.); (L.G.); (O.M.D.); (S.L.M.); (M.B.)
- Florey Institute of Neuroscience and Mental Health, Parkville 3010, Australia
| | - Olivia M. Dean
- The Institute for Mental and Physical Health and Clinical Translation (IMPACT), School of Medicine, Deakin University, Geelong 3220, Australia; (Z.S.J.L.); (T.T.T.T.); (C.C.B.); (B.S.); (B.P.); (C.S.); (J.H.K.); (S.K.); (L.G.); (O.M.D.); (S.L.M.); (M.B.)
- Florey Institute of Neuroscience and Mental Health, Parkville 3010, Australia
| | - Sean L. McGee
- The Institute for Mental and Physical Health and Clinical Translation (IMPACT), School of Medicine, Deakin University, Geelong 3220, Australia; (Z.S.J.L.); (T.T.T.T.); (C.C.B.); (B.S.); (B.P.); (C.S.); (J.H.K.); (S.K.); (L.G.); (O.M.D.); (S.L.M.); (M.B.)
| | - Michael Berk
- The Institute for Mental and Physical Health and Clinical Translation (IMPACT), School of Medicine, Deakin University, Geelong 3220, Australia; (Z.S.J.L.); (T.T.T.T.); (C.C.B.); (B.S.); (B.P.); (C.S.); (J.H.K.); (S.K.); (L.G.); (O.M.D.); (S.L.M.); (M.B.)
- Florey Institute of Neuroscience and Mental Health, Parkville 3010, Australia
| | - Ken Walder
- The Institute for Mental and Physical Health and Clinical Translation (IMPACT), School of Medicine, Deakin University, Geelong 3220, Australia; (Z.S.J.L.); (T.T.T.T.); (C.C.B.); (B.S.); (B.P.); (C.S.); (J.H.K.); (S.K.); (L.G.); (O.M.D.); (S.L.M.); (M.B.)
- Correspondence:
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15
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O'Donohue MF, Da Costa L, Lezzerini M, Unal S, Joret C, Bartels M, Brilstra E, Scheijde-Vermeulen M, Wacheul L, De Keersmaecker K, Vereecke S, Labarque V, Saby M, Lefevre SD, Platon J, Montel-Lehry N, Laugero N, Lacazette E, van Gassen K, Houtkooper RH, Simsek-Kiper PO, Leblanc T, Yarali N, Cetinkaya A, Akarsu NA, Gleizes PE, Lafontaine DLJ, MacInnes AW. HEATR3 variants impair nuclear import of uL18 (RPL5) and drive Diamond-Blackfan anemia. Blood 2022; 139:3111-3126. [PMID: 35213692 PMCID: PMC9136880 DOI: 10.1182/blood.2021011846] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 02/03/2022] [Indexed: 11/21/2022] Open
Abstract
The congenital bone marrow failure syndrome Diamond-Blackfan anemia (DBA) is typically associated with variants in ribosomal protein (RP) genes impairing erythroid cell development. Here we report multiple individuals with biallelic HEATR3 variants exhibiting bone marrow failure, short stature, facial and acromelic dysmorphic features, and intellectual disability. These variants destabilize a protein whose yeast homolog is known to synchronize the nuclear import of RPs uL5 (RPL11) and uL18 (RPL5), which are both critical for producing ribosomal subunits and for stabilizing the p53 tumor suppressor when ribosome biogenesis is compromised. Expression of HEATR3 variants or repression of HEATR3 expression in primary cells, cell lines of various origins, and yeast models impairs growth, differentiation, pre-ribosomal RNA processing, and ribosomal subunit formation reminiscent of DBA models of large subunit RP gene variants. Consistent with a role of HEATR3 in RP import, HEATR3-depleted cells or patient-derived fibroblasts display reduced nuclear accumulation of uL18. Hematopoietic progenitor cells expressing HEATR3 variants or small-hairpin RNAs knocking down HEATR3 synthesis reveal abnormal acceleration of erythrocyte maturation coupled to severe proliferation defects that are independent of p53 activation. Our study uncovers a new pathophysiological mechanism leading to DBA driven by biallelic HEATR3 variants and the destabilization of a nuclear import protein important for ribosome biogenesis.
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Affiliation(s)
- Marie-Françoise O'Donohue
- MCD, Centre de Biologie Intégrative, Université de Toulouse, Centre National de la Recherche Scientifique (CNRS), UT3, Toulouse, France
| | - Lydie Da Costa
- University of Paris Cité, Paris, France
- Hematim EA4666, Amiens, France
- Laboratory of Excellence for Red Cells, LABEX GR-Ex, Paris, France
- Service d'Hématologie Biologique, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Robert Debré, Paris, France
| | - Marco Lezzerini
- Amsterdam UMC, University of Amsterdam, Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology, Endocrinology, and Metabolism, Amsterdam, The Netherlands
| | - Sule Unal
- Pediatric Hematology Unit, Department of Pediatrics, Medical Faculty, and
- Research Center on Fanconi Anemia and Other Inherited Bone Marrow Failure Syndromes, Hacettepe University, Ankara, Turkey
| | - Clément Joret
- RNA Molecular Biology, Fonds de la Recherche Scientifique (F.R.S./FNRS), Université libre de Bruxelles (ULB), Gosselies, Belgium
| | | | - Eva Brilstra
- Department of Genetics, University Medical Center Utrecht, Utrecht, The Netherlands
| | | | - Ludivine Wacheul
- RNA Molecular Biology, Fonds de la Recherche Scientifique (F.R.S./FNRS), Université libre de Bruxelles (ULB), Gosselies, Belgium
| | - Kim De Keersmaecker
- Laboratory for Disease Mechanisms in Cancer, Department of Oncology, Katholieke Universiteit Leuven (KU Leuven) and Leuven Cancer Institute (LKI), Leuven, Belgium
| | - Stijn Vereecke
- Laboratory for Disease Mechanisms in Cancer, Department of Oncology, Katholieke Universiteit Leuven (KU Leuven) and Leuven Cancer Institute (LKI), Leuven, Belgium
| | - Veerle Labarque
- Department of Pediatric Hemato-Oncology, University Hospitals Leuven, Leuven, Belgium
| | | | - Sophie D Lefevre
- Laboratory of Excellence for Red Cells, LABEX GR-Ex, Paris, France
- UMR S1134, INSERM, Paris, France
| | | | - Nathalie Montel-Lehry
- MCD, Centre de Biologie Intégrative, Université de Toulouse, Centre National de la Recherche Scientifique (CNRS), UT3, Toulouse, France
| | | | - Eric Lacazette
- UMR 1297-I2MC, INSERM, Université de Toulouse, Toulouse, France
| | - Koen van Gassen
- Department of Genetics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Riekelt H Houtkooper
- Amsterdam UMC, University of Amsterdam, Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology, Endocrinology, and Metabolism, Amsterdam, The Netherlands
| | - Pelin Ozlem Simsek-Kiper
- Pediatric Genetics Unit, Department of Pediatrics, Medical Faculty, Hacettepe University, Ankara, Turkey
| | - Thierry Leblanc
- Immuno-Hematology Department, Hôpital Robert-Debré, Assistance Publique-Hôpitaux de Paris, Paris, France
- EA-3518, Université Paris Cité, Paris, France
| | - Nese Yarali
- Pediatric Hematology Unit, Department of Pediatrics, Medical Faculty, Yildirim Beyazit University, Ankara, Turkey; and
| | - Arda Cetinkaya
- Department of Medical Genetics, Medical Faculty, Hacettepe University, Ankara, Turkey
| | - Nurten A Akarsu
- Department of Medical Genetics, Medical Faculty, Hacettepe University, Ankara, Turkey
| | - Pierre-Emmanuel Gleizes
- MCD, Centre de Biologie Intégrative, Université de Toulouse, Centre National de la Recherche Scientifique (CNRS), UT3, Toulouse, France
| | - Denis L J Lafontaine
- RNA Molecular Biology, Fonds de la Recherche Scientifique (F.R.S./FNRS), Université libre de Bruxelles (ULB), Gosselies, Belgium
| | - Alyson W MacInnes
- Amsterdam UMC, University of Amsterdam, Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology, Endocrinology, and Metabolism, Amsterdam, The Netherlands
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16
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Boussaid I, Fontenay M. Translation defects in ribosomopathies. Curr Opin Hematol 2022; 29:119-125. [PMID: 35102070 DOI: 10.1097/moh.0000000000000705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE OF REVIEW Congenital or acquired ribosomopathies related to mutations or deletions in ribosomal proteins gene or ribosome-associated proteins exhibit defective ribosome biogenesis that expose the cell to translation defects. The mechanisms leading to low translation rate, loss-of-translation fidelity and translation selectivity are reviewed. RECENT FINDINGS New quantitative techniques to measure ribosome component stoichiometry reveal that the pool of ribosomes could be heterogeneous and/or decreased with a limited number of translationally competent ribosomes. During development or cell differentiation, the absence of specific ribosome components or their replacement by paralogs generate heterogeneous ribosomes that are specialized in the translation of specific mRNAs. Decreased ribosome content by defective biosynthesis of a subunit results in translation selectivity at the expense of short structured transcripts with high codon adaptation index. Activation of p53, as a witness of nucleolar stress associated with the hematological phenotype of ribosomopathies participates in translational reprogramming of the cell by interfering with cap-dependent translation. SUMMARY Translation selectivity is a common feature of ribosomopathies. p53 is more selectively activated in ribosomopathies with erythroid phenotype. The discovery of its dual role in regulating transcriptional and translational program supports new therapeutic perspectives.
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Affiliation(s)
- Ismael Boussaid
- Université de Paris, Laboratory of excellence for Red blood cells GR-Ex, and Institut Cochin, CNRS UMR 8104, INSERM U1016, Paris, France
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17
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Phan T, Maity P, Ludwig C, Streit L, Michaelis J, Tsesmelis M, Scharffetter-Kochanek K, Iben S. Nucleolar TFIIE plays a role in ribosomal biogenesis and performance. Nucleic Acids Res 2021; 49:11197-11210. [PMID: 34581812 PMCID: PMC8565312 DOI: 10.1093/nar/gkab866] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 09/09/2021] [Accepted: 09/16/2021] [Indexed: 11/29/2022] Open
Abstract
Ribosome biogenesis is a highly energy-demanding process in eukaryotes which requires the concerted action of all three RNA polymerases. In RNA polymerase II transcription, the general transcription factor TFIIH is recruited by TFIIE to the initiation site of protein-coding genes. Distinct mutations in TFIIH and TFIIE give rise to the degenerative disorder trichothiodystrophy (TTD). Here, we uncovered an unexpected role of TFIIE in ribosomal RNA synthesis by RNA polymerase I. With high resolution microscopy we detected TFIIE in the nucleolus where TFIIE binds to actively transcribed rDNA. Mutations in TFIIE affects gene-occupancy of RNA polymerase I, rRNA maturation, ribosomal assembly and performance. In consequence, the elevated translational error rate with imbalanced protein synthesis and turnover results in an increase in heat-sensitive proteins. Collectively, mutations in TFIIE—due to impaired ribosomal biogenesis and translational accuracy—lead to a loss of protein homeostasis (proteostasis) which can partly explain the clinical phenotype in TTD.
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Affiliation(s)
- Tamara Phan
- Department of Dermatology and Allergic Diseases, Ulm University, Ulm, Baden-Württemberg, 89081 Germany
| | - Pallab Maity
- Department of Dermatology and Allergic Diseases, Ulm University, Ulm, Baden-Württemberg, 89081 Germany
| | - Christina Ludwig
- Bavarian Center for Biomolecular Mass Spectrometry, Technical University Munich, Freising, Bavaria 85354, Germany
| | - Lisa Streit
- Institute of Biophysics, Ulm University, Ulm, Baden-Württemberg 89081, Germany
| | - Jens Michaelis
- Institute of Biophysics, Ulm University, Ulm, Baden-Württemberg 89081, Germany
| | - Miltiadis Tsesmelis
- Institute of Physiological Chemistry, Ulm University, Ulm, Baden-Württemberg 89081, Germany
| | | | - Sebastian Iben
- Department of Dermatology and Allergic Diseases, Ulm University, Ulm, Baden-Württemberg, 89081 Germany
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18
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Regulation of mRNA translation in stem cells; links to brain disorders. Cell Signal 2021; 88:110166. [PMID: 34624487 DOI: 10.1016/j.cellsig.2021.110166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 08/09/2021] [Accepted: 09/29/2021] [Indexed: 11/22/2022]
Abstract
Translational control of gene expression is emerging as a cardinal step in the regulation of protein abundance. Especially for embryonic (ESC) and neuronal stem cells (NSC), regulation of mRNA translation is involved in the maintenance of pluripotency but also differentiation. For neuronal stem cells this regulation is linked to the various neuronal subtypes that arise in the developing brain and is linked to numerous brain disorders. Herein, we review translational control mechanisms in ESCs and NSCs during development and differentiation, and briefly discuss their link to brain disorders.
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19
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Singh S, Vanden Broeck A, Miller L, Chaker-Margot M, Klinge S. Nucleolar maturation of the human small subunit processome. Science 2021; 373:eabj5338. [PMID: 34516797 DOI: 10.1126/science.abj5338] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Sameer Singh
- Laboratory of Protein and Nucleic Acid Chemistry, The Rockefeller University, New York, NY 10065, USA
| | - Arnaud Vanden Broeck
- Laboratory of Protein and Nucleic Acid Chemistry, The Rockefeller University, New York, NY 10065, USA
| | - Linamarie Miller
- Laboratory of Protein and Nucleic Acid Chemistry, The Rockefeller University, New York, NY 10065, USA.,Tri-Institutional Training Program in Chemical Biology, The Rockefeller University, New York, NY 10065, USA
| | - Malik Chaker-Margot
- Laboratory of Protein and Nucleic Acid Chemistry, The Rockefeller University, New York, NY 10065, USA.,Tri-Institutional Training Program in Chemical Biology, The Rockefeller University, New York, NY 10065, USA
| | - Sebastian Klinge
- Laboratory of Protein and Nucleic Acid Chemistry, The Rockefeller University, New York, NY 10065, USA
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20
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Kang J, Brajanovski N, Chan KT, Xuan J, Pearson RB, Sanij E. Ribosomal proteins and human diseases: molecular mechanisms and targeted therapy. Signal Transduct Target Ther 2021; 6:323. [PMID: 34462428 PMCID: PMC8405630 DOI: 10.1038/s41392-021-00728-8] [Citation(s) in RCA: 125] [Impact Index Per Article: 41.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 07/12/2021] [Accepted: 07/30/2021] [Indexed: 02/07/2023] Open
Abstract
Ribosome biogenesis and protein synthesis are fundamental rate-limiting steps for cell growth and proliferation. The ribosomal proteins (RPs), comprising the structural parts of the ribosome, are essential for ribosome assembly and function. In addition to their canonical ribosomal functions, multiple RPs have extra-ribosomal functions including activation of p53-dependent or p53-independent pathways in response to stress, resulting in cell cycle arrest and apoptosis. Defects in ribosome biogenesis, translation, and the functions of individual RPs, including mutations in RPs have been linked to a diverse range of human congenital disorders termed ribosomopathies. Ribosomopathies are characterized by tissue-specific phenotypic abnormalities and higher cancer risk later in life. Recent discoveries of somatic mutations in RPs in multiple tumor types reinforce the connections between ribosomal defects and cancer. In this article, we review the most recent advances in understanding the molecular consequences of RP mutations and ribosomal defects in ribosomopathies and cancer. We particularly discuss the molecular basis of the transition from hypo- to hyper-proliferation in ribosomopathies with elevated cancer risk, a paradox termed "Dameshek's riddle." Furthermore, we review the current treatments for ribosomopathies and prospective therapies targeting ribosomal defects. We also highlight recent advances in ribosome stress-based cancer therapeutics. Importantly, insights into the mechanisms of resistance to therapies targeting ribosome biogenesis bring new perspectives into the molecular basis of cancer susceptibility in ribosomopathies and new clinical implications for cancer therapy.
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Affiliation(s)
- Jian Kang
- grid.1055.10000000403978434Division of Cancer Research, Peter MacCallum Cancer Centre, Melbourne, VIC Australia ,grid.1008.90000 0001 2179 088XSir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC Australia
| | - Natalie Brajanovski
- grid.1055.10000000403978434Division of Cancer Research, Peter MacCallum Cancer Centre, Melbourne, VIC Australia
| | - Keefe T. Chan
- grid.1055.10000000403978434Division of Cancer Research, Peter MacCallum Cancer Centre, Melbourne, VIC Australia ,grid.1008.90000 0001 2179 088XSir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC Australia
| | - Jiachen Xuan
- grid.1055.10000000403978434Division of Cancer Research, Peter MacCallum Cancer Centre, Melbourne, VIC Australia ,grid.1008.90000 0001 2179 088XSir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC Australia
| | - Richard B. Pearson
- grid.1055.10000000403978434Division of Cancer Research, Peter MacCallum Cancer Centre, Melbourne, VIC Australia ,grid.1008.90000 0001 2179 088XSir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC Australia ,grid.1002.30000 0004 1936 7857Department of Biochemistry and Molecular Biology, Monash University, Clayton, VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Biochemistry and Molecular Biology, University of Melbourne, Melbourne, VIC Australia
| | - Elaine Sanij
- grid.1055.10000000403978434Division of Cancer Research, Peter MacCallum Cancer Centre, Melbourne, VIC Australia ,grid.1008.90000 0001 2179 088XSir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Clinical Pathology, University of Melbourne, Melbourne, VIC Australia ,grid.1073.50000 0004 0626 201XSt. Vincent’s Institute of Medical Research, Fitzroy, VIC Australia
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Karim N, Plott TJ, Durbin-Johnson BP, Rocke DM, Salemi M, Phinney BS, Goecker ZC, Pieterse MJM, Parker GJ, Rice RH. Elucidation of familial relationships using hair shaft proteomics. Forensic Sci Int Genet 2021; 54:102564. [PMID: 34315035 DOI: 10.1016/j.fsigen.2021.102564] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 07/08/2021] [Accepted: 07/14/2021] [Indexed: 01/01/2023]
Abstract
This study examines the potential of hair shaft proteomic analysis to delineate genetic relatedness. Proteomic profiling and amino acid sequence analysis provide information for quantitative and statistically-based analysis of individualization and sample similarity. Protein expression levels are a function of cell-specific transcriptional and translational programs. These programs are greatly influenced by an individual's genetic background, and are therefore influenced by familial relatedness as well as ancestry and genetic disease. Proteomic profiles should therefore be more similar among related individuals than unrelated individuals. Likewise, profiles of genetically variant peptides that contain single amino acid polymorphisms, the result of non-synonymous SNP alleles, should behave similarly. The proteomically-inferred SNP alleles should also provide a basis for calculation of combined paternity and sibship indices. We test these hypotheses using matching proteomic and genetic datasets from a family of two adults and four siblings, one of which has a genetic condition that perturbs hair structure and properties. We demonstrate that related individuals, compared to those who are unrelated, have more similar proteomic profiles, profiles of genetically variant peptides and higher combined paternity indices and combined sibship indices. This study builds on previous analyses of hair shaft protein profiling and genetically variant peptide profiles in different real-world scenarios including different human hair shaft body locations and pigmentation status. It also validates the inclusion of proteomic information with other biomolecular substrates in forensic hair shaft analysis, including mitochondrial and nuclear DNA.
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Affiliation(s)
- Noreen Karim
- Department of Environmental Toxicology, University of California, Davis, USA
| | - Tempest J Plott
- Department of Environmental Toxicology, University of California, Davis, USA; Forensic Science Program, University of California, Davis, USA
| | - Blythe P Durbin-Johnson
- Division of Biostatistics, Department of Public Health Sciences, Clinical and Translational, Science Center Biostatistics Core, University of California, Davis, USA
| | - David M Rocke
- Division of Biostatistics, Department of Public Health Sciences, Clinical and Translational, Science Center Biostatistics Core, University of California, Davis, USA
| | - Michelle Salemi
- Proteomics Core Facility, University of California, Davis, USA
| | - Brett S Phinney
- Proteomics Core Facility, University of California, Davis, USA
| | - Zachary C Goecker
- Department of Environmental Toxicology, University of California, Davis, USA
| | - Marc J M Pieterse
- Department of Environmental Toxicology, University of California, Davis, USA
| | - Glendon J Parker
- Department of Environmental Toxicology, University of California, Davis, USA; Forensic Science Program, University of California, Davis, USA
| | - Robert H Rice
- Department of Environmental Toxicology, University of California, Davis, USA; Forensic Science Program, University of California, Davis, USA
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22
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Qiang M, Khalid F, Phan T, Ludwig C, Scharffetter-Kochanek K, Iben S. Cockayne Syndrome-Associated CSA and CSB Mutations Impair Ribosome Biogenesis, Ribosomal Protein Stability, and Global Protein Folding. Cells 2021; 10:cells10071616. [PMID: 34203326 PMCID: PMC8306422 DOI: 10.3390/cells10071616] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/11/2021] [Accepted: 06/25/2021] [Indexed: 12/18/2022] Open
Abstract
Cockayne syndrome (CS) is a developmental disorder with symptoms that are typical for the aging body, including subcutaneous fat loss, alopecia, and cataracts. Here, we show that in the cells of CS patients, RNA polymerase I transcription and the processing of the pre-rRNA are disturbed, leading to an accumulation of the 18S-E intermediate. The mature 18S rRNA level is reduced, and isolated ribosomes lack specific ribosomal proteins of the small 40S subunit. Ribosomal proteins are susceptible to unfolding and the CS cell proteome is heat-sensitive, indicating misfolded proteins and an error-prone translation process in CS cells. Pharmaceutical chaperones restored impaired cellular proliferation. Therefore, we provide evidence for severe protein synthesis malfunction, which together with a loss of proteostasis constitutes the underlying pathophysiology in CS.
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Affiliation(s)
- Mingyue Qiang
- Department of Dermatology and Allergic Diseases, Ulm University, Albert-Einstein Allee 23, 89081 Ulm, Germany; (M.Q.); (F.K.); (T.P.); (K.S.-K.)
| | - Fatima Khalid
- Department of Dermatology and Allergic Diseases, Ulm University, Albert-Einstein Allee 23, 89081 Ulm, Germany; (M.Q.); (F.K.); (T.P.); (K.S.-K.)
| | - Tamara Phan
- Department of Dermatology and Allergic Diseases, Ulm University, Albert-Einstein Allee 23, 89081 Ulm, Germany; (M.Q.); (F.K.); (T.P.); (K.S.-K.)
| | - Christina Ludwig
- Bavarian Center for Biomedical Mass Spectrometry, TUM, University of Munich, 85354 Freising, Germany;
| | - Karin Scharffetter-Kochanek
- Department of Dermatology and Allergic Diseases, Ulm University, Albert-Einstein Allee 23, 89081 Ulm, Germany; (M.Q.); (F.K.); (T.P.); (K.S.-K.)
| | - Sebastian Iben
- Department of Dermatology and Allergic Diseases, Ulm University, Albert-Einstein Allee 23, 89081 Ulm, Germany; (M.Q.); (F.K.); (T.P.); (K.S.-K.)
- Correspondence:
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23
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Komov L, Melamed Kadosh D, Barnea E, Admon A. The Effect of Interferons on Presentation of Defective Ribosomal Products as HLA Peptides. Mol Cell Proteomics 2021; 20:100105. [PMID: 34087483 PMCID: PMC8724922 DOI: 10.1016/j.mcpro.2021.100105] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 05/15/2021] [Accepted: 05/21/2021] [Indexed: 02/06/2023] Open
Abstract
A subset of class I major histocompatibility complex (MHC)-bound peptides is produced from immature proteins that are rapidly degraded after synthesis. These defective ribosomal products (DRiPs) have been implicated in early alert of the immune system about impending infections. Interferons are important cytokines, produced in response to viral infection, that modulate cellular metabolism and gene expression patterns, increase the presentation of MHC molecules, and induce rapid degradation of proteins and cell-surface presentation of their derived MHC peptides, thereby contributing to the battle against pathogen infections. This study evaluated the role of interferons in the induction of rapid degradation of DRiPs to modulate the repertoire of DRiP-derived MHC peptides. Cultured human breast cancer cells were treated with interferons, and the rates of synthesis and degradation of cellular protein and their degradation products were determined by LC-MS/MS analysis, following the rates of incorporation of heavy stable isotope–labeled amino acids (dynamic stable isotope labeling by amino acids in cell culture, dynamic SILAC) at several time points after the interferon application. Large numbers of MHC peptides that incorporated the heavy amino acids faster than their source proteins indicated that DRiP peptides were abundant in the MHC peptidome; interferon treatment increased by about twofold their relative proportions in the peptidome. Such typical DRiP-derived MHC peptides were from the surplus subunits of the proteasome and ribosome, which are degraded because of the transition to immunoproteasomes and a new composition of ribosomes incorporating protein subunits that are induced by the interferon. We conclude that degradation of surplus subunits induced by the interferon is a major source for DRiP–MHC peptides, a phenomenon relevant to coping with viral infections, where a rapid presentation of MHC peptides derived from excess viral proteins may help alert the immune system about the impending infection. Degradation products of surplus subunits are often presented as HLA peptides. Interferons increase degradation and presentation of such defective products. Dynamic SILAC facilitates identification of such HLA peptides. This cellular pathway provides alert to the immune system about viral infections.
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Affiliation(s)
- Liran Komov
- Faculty of Biology, Technion-Israel Institute of Technology, Haifa, Israel
| | | | - Eilon Barnea
- Faculty of Biology, Technion-Israel Institute of Technology, Haifa, Israel
| | - Arie Admon
- Faculty of Biology, Technion-Israel Institute of Technology, Haifa, Israel.
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24
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Changes in bioactive proteins and serum proteome of human milk under different frozen storage. Food Chem 2021; 352:129436. [PMID: 33691214 DOI: 10.1016/j.foodchem.2021.129436] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 02/18/2021] [Accepted: 02/21/2021] [Indexed: 11/20/2022]
Abstract
This study aimed to investigate changes in macronutrients, total bacterial count, and serum proteome of human milk (HM) under different frozen storage (-18°C and -60°C, 60 d and 180 d) by using IBT Labeling proteomics techniques and ELISA kit. The results indicated that total protein concentrations and total aerobic bacterial counts were significantly decreased at -18°C, while no difference at -60°C. A total of 1617 proteins were identified and quantified, and 173 proteins were significantly different. The -18°C storage had much higher influence on HM serum protein profiles than that of -60°C. Increased milk fat globule membrane (MFGM) proteins at -18°C are highly related to the damage of MFGM and transfer of MFGM proteins. The reduction of bioactive proteins is probably related to the ice-induced denaturation. In conclusion, fast cooling and ultra-low constant temperature are more suitable for the cryopreservation of human milk.
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25
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Recasens-Alvarez C, Alexandre C, Kirkpatrick J, Nojima H, Huels DJ, Snijders AP, Vincent JP. Ribosomopathy-associated mutations cause proteotoxic stress that is alleviated by TOR inhibition. Nat Cell Biol 2021; 23:127-135. [PMID: 33495632 PMCID: PMC7116740 DOI: 10.1038/s41556-020-00626-1] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 12/16/2020] [Indexed: 02/07/2023]
Abstract
Ribosomes are multicomponent molecular machines that synthesize all of the proteins of living cells. Most of the genes that encode the protein components of ribosomes are therefore essential. A reduction in gene dosage is often viable albeit deleterious and is associated with human syndromes, which are collectively known as ribosomopathies1-3. The cell biological basis of these pathologies has remained unclear. Here, we model human ribosomopathies in Drosophila and find widespread apoptosis and cellular stress in the resulting animals. This is not caused by insufficient protein synthesis, as reasonably expected. Instead, ribosomal protein deficiency elicits proteotoxic stress, which we suggest is caused by the accumulation of misfolded proteins that overwhelm the protein degradation machinery. We find that dampening the integrated stress response4 or autophagy increases the harm inflicted by ribosomal protein deficiency, suggesting that these activities could be cytoprotective. Inhibition of TOR activity-which decreases ribosomal protein production, slows down protein synthesis and stimulates autophagy5-reduces proteotoxic stress in our ribosomopathy model. Interventions that stimulate autophagy, combined with means of boosting protein quality control, could form the basis of a therapeutic strategy for this class of diseases.
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Affiliation(s)
| | | | | | - Hisashi Nojima
- The Francis Crick Institute, London, UK
- FUJIREBIO Inc, Tokyo, Japan
| | - David J Huels
- The Francis Crick Institute, London, UK
- Center for Experimental and Molecular Medicine, Cancer Center Amsterdam, Academic Medical Center, Amsterdam, the Netherlands
- Academic Medical Center, Oncode Institute, Amsterdam, the Netherlands
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26
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Datta M, Pillai M, Modak MJ, Liiv A, Khaja FT, Hussain T, Remme J, Varshney U. A mutation in the ribosomal protein uS12 reveals novel functions of its universally conserved PNSA loop. Mol Microbiol 2021; 115:1292-1308. [PMID: 33368752 DOI: 10.1111/mmi.14675] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Revised: 12/18/2020] [Accepted: 12/19/2020] [Indexed: 11/28/2022]
Abstract
The ribosomal protein uS12 is conserved across all domains of life. Recently, a heterozygous spontaneous mutation in human uS12 (corresponding to R49K mutation immediately downstream of the universally conserved 44 PNSA47 loop in Escherichia coli uS12) was identified for causing ribosomopathy, highlighting the importance of the PNSA loop. To investigate the effects of a similar mutation in the absence of any wild-type alleles, we mutated the rpsL gene (encoding uS12) in E. coli. Consistent with its pathology (in humans), we were unable to generate the R49K mutation in E. coli in the absence of a support plasmid. However, we were able to generate the L48K mutation in its immediate vicinity. The L48K mutation resulted in a cold sensitive phenotype and ribosome biogenesis defect in the strain. We show that the L48K mutation impacts the steps of initiation and elongation. Furthermore, the genetic interactions of the L48K mutation with RRF and Pth suggest a novel role of the PNSA loop in ribosome recycling. Our studies reveal new functions of the PNSA loop in uS12, which has so far been studied in the context of translation elongation.
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Affiliation(s)
- Madhurima Datta
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore, India
| | - Maalavika Pillai
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore, India
| | - Mamata Jayant Modak
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore, India
| | - Aivar Liiv
- Institute of Molecular and Cell Biology, University of Tartu, Tartu, Estonia
| | - Faisal Tarique Khaja
- Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, India
| | - Tanweer Hussain
- Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, India
| | - Jaanus Remme
- Institute of Molecular and Cell Biology, University of Tartu, Tartu, Estonia
| | - Umesh Varshney
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore, India.,Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, India
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27
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Farooq M, Lindbæk L, Krogh N, Doganli C, Keller C, Mönnich M, Gonçalves AB, Sakthivel S, Mang Y, Fatima A, Andersen VS, Hussain MS, Eiberg H, Hansen L, Kjaer KW, Gopalakrishnan J, Pedersen LB, Møllgård K, Nielsen H, Baig SM, Tommerup N, Christensen ST, Larsen LA. RRP7A links primary microcephaly to dysfunction of ribosome biogenesis, resorption of primary cilia, and neurogenesis. Nat Commun 2020; 11:5816. [PMID: 33199730 PMCID: PMC7670429 DOI: 10.1038/s41467-020-19658-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 10/26/2020] [Indexed: 12/25/2022] Open
Abstract
Primary microcephaly (MCPH) is characterized by reduced brain size and intellectual disability. The exact pathophysiological mechanism underlying MCPH remains to be elucidated, but dysfunction of neuronal progenitors in the developing neocortex plays a major role. We identified a homozygous missense mutation (p.W155C) in Ribosomal RNA Processing 7 Homolog A, RRP7A, segregating with MCPH in a consanguineous family with 10 affected individuals. RRP7A is highly expressed in neural stem cells in developing human forebrain, and targeted mutation of Rrp7a leads to defects in neurogenesis and proliferation in a mouse stem cell model. RRP7A localizes to centrosomes, cilia and nucleoli, and patient-derived fibroblasts display defects in ribosomal RNA processing, primary cilia resorption, and cell cycle progression. Analysis of zebrafish embryos supported that the patient mutation in RRP7A causes reduced brain size, impaired neurogenesis and cell proliferation, and defective ribosomal RNA processing. These findings provide novel insight into human brain development and MCPH. The RRP7A a gene is involved in ribosome biogenesis. Here the authors report a homozygous missense mutation segregating with primary microcephaly, and show that this occurs via functional defects in both nucleoli and primary cilia disrupting cell proliferation and neurogenesis.
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Affiliation(s)
- Muhammad Farooq
- Department of Cellular and Molecular Medicine, University of Copenhagen, Blegdamsvej 3, DK-2200, Copenhagen, Denmark.,Department of Biochemistry and Biotechnology, The Islamia University of Bahawalpur, Baghdad ul Jadeed Campus, 63100, Bahawalpur, Punjab, Pakistan
| | - Louise Lindbæk
- Department of Biology, University of Copenhagen, Universitetsparken 13, DK-2100, Copenhagen, Denmark
| | - Nicolai Krogh
- Department of Cellular and Molecular Medicine, University of Copenhagen, Blegdamsvej 3, DK-2200, Copenhagen, Denmark
| | - Canan Doganli
- Department of Cellular and Molecular Medicine, University of Copenhagen, Blegdamsvej 3, DK-2200, Copenhagen, Denmark
| | - Cecilie Keller
- Department of Biology, University of Copenhagen, Universitetsparken 13, DK-2100, Copenhagen, Denmark
| | - Maren Mönnich
- Department of Cellular and Molecular Medicine, University of Copenhagen, Blegdamsvej 3, DK-2200, Copenhagen, Denmark
| | - André Brás Gonçalves
- Department of Biology, University of Copenhagen, Universitetsparken 13, DK-2100, Copenhagen, Denmark
| | - Srinivasan Sakthivel
- Department of Cellular and Molecular Medicine, University of Copenhagen, Blegdamsvej 3, DK-2200, Copenhagen, Denmark
| | - Yuan Mang
- Department of Cellular and Molecular Medicine, University of Copenhagen, Blegdamsvej 3, DK-2200, Copenhagen, Denmark
| | - Ambrin Fatima
- Human Molecular Genetics Laboratory; Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering PIEAS, Jhang Road, 38000, Faisalabad, Punjab, Pakistan
| | - Vivi Søgaard Andersen
- Department of Biology, University of Copenhagen, Universitetsparken 13, DK-2100, Copenhagen, Denmark
| | - Muhammad S Hussain
- Institute of Biochemistry I, University of Cologne, Joseph-Stelzmann-Strasse 52, D50931, Cologne, Germany.,Cologne Center for Genomics and Center for Molecular Medicine Cologne, University of Cologne, Robert-Koch-Strasse 21, D50931, Cologne, Germany
| | - Hans Eiberg
- Department of Cellular and Molecular Medicine, University of Copenhagen, Blegdamsvej 3, DK-2200, Copenhagen, Denmark
| | - Lars Hansen
- Department of Cellular and Molecular Medicine, University of Copenhagen, Blegdamsvej 3, DK-2200, Copenhagen, Denmark
| | - Klaus Wilbrandt Kjaer
- Department of Cellular and Molecular Medicine, University of Copenhagen, Blegdamsvej 3, DK-2200, Copenhagen, Denmark
| | - Jay Gopalakrishnan
- Institute of Human Genetics, Universitätsstrasse 1, Heinrich-Heine-University, D-40225, Düsseldorf, Germany
| | - Lotte Bang Pedersen
- Department of Biology, University of Copenhagen, Universitetsparken 13, DK-2100, Copenhagen, Denmark
| | - Kjeld Møllgård
- Department of Cellular and Molecular Medicine, University of Copenhagen, Blegdamsvej 3, DK-2200, Copenhagen, Denmark
| | - Henrik Nielsen
- Department of Cellular and Molecular Medicine, University of Copenhagen, Blegdamsvej 3, DK-2200, Copenhagen, Denmark
| | - Shahid M Baig
- Human Molecular Genetics Laboratory; Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering PIEAS, Jhang Road, 38000, Faisalabad, Punjab, Pakistan
| | - Niels Tommerup
- Department of Cellular and Molecular Medicine, University of Copenhagen, Blegdamsvej 3, DK-2200, Copenhagen, Denmark
| | - Søren Tvorup Christensen
- Department of Biology, University of Copenhagen, Universitetsparken 13, DK-2100, Copenhagen, Denmark.
| | - Lars Allan Larsen
- Department of Cellular and Molecular Medicine, University of Copenhagen, Blegdamsvej 3, DK-2200, Copenhagen, Denmark.
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28
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Venturi G, Montanaro L. How Altered Ribosome Production Can Cause or Contribute to Human Disease: The Spectrum of Ribosomopathies. Cells 2020; 9:E2300. [PMID: 33076379 PMCID: PMC7602531 DOI: 10.3390/cells9102300] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/09/2020] [Accepted: 10/12/2020] [Indexed: 12/22/2022] Open
Abstract
A number of different defects in the process of ribosome production can lead to a diversified spectrum of disorders that are collectively identified as ribosomopathies. The specific factors involved may either play a role only in ribosome biogenesis or have additional extra-ribosomal functions, making it difficult to ascribe the pathogenesis of the disease specifically to an altered ribosome biogenesis, even if the latter is clearly affected. We reviewed the available literature in the field from this point of view with the aim of distinguishing, among ribosomopathies, the ones due to specific alterations in the process of ribosome production from those characterized by a multifactorial pathogenesis.
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Affiliation(s)
- Giulia Venturi
- Department of Experimental, Diagnostic and Specialty Medicine, Alma Mater Studiorum-University of Bologna, Via Massarenti 9, 40138 Bologna, Italy;
- Center for Applied Biomedical Research, Alma Mater Studiorum-University of Bologna, Via Massarenti 9, 40138 Bologna, Italy
| | - Lorenzo Montanaro
- Department of Experimental, Diagnostic and Specialty Medicine, Alma Mater Studiorum-University of Bologna, Via Massarenti 9, 40138 Bologna, Italy;
- Center for Applied Biomedical Research, Alma Mater Studiorum-University of Bologna, Via Massarenti 9, 40138 Bologna, Italy
- Azienda Ospedaliero-Universitaria di Bologna, Via Albertoni 15, 40138 Bologna, Italy
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29
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Skariah G, Todd PK. Translational control in aging and neurodegeneration. WILEY INTERDISCIPLINARY REVIEWS-RNA 2020; 12:e1628. [PMID: 32954679 DOI: 10.1002/wrna.1628] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 08/19/2020] [Accepted: 09/07/2020] [Indexed: 12/13/2022]
Abstract
Protein metabolism plays central roles in age-related decline and neurodegeneration. While a large body of research has explored age-related changes in protein degradation, alterations in the efficiency and fidelity of protein synthesis with aging are less well understood. Age-associated changes occur in both the protein synthetic machinery (ribosomal proteins and rRNA) and within regulatory factors controlling translation. At the same time, many of the interventions that prolong lifespan do so in part by pre-emptively decreasing protein synthesis rates to allow better harmonization to age-related declines in protein catabolism. Here we review the roles of translation regulation in aging, with a specific focus on factors implicated in age-related neurodegeneration. We discuss how emerging technologies such as ribosome profiling and superior mass spectrometric approaches are illuminating age-dependent mRNA-specific changes in translation rates across tissues to reveal a critical interplay between catabolic and anabolic pathways that likely contribute to functional decline. These new findings point to nodes in posttranscriptional gene regulation that both contribute to aging and offer targets for therapy. This article is categorized under: Translation > Translation Regulation Translation > Ribosome Biogenesis Translation > Translation Mechanisms.
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Affiliation(s)
- Geena Skariah
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, USA
| | - Peter K Todd
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, USA
- Ann Arbor VA Healthcare System, Department of Veterans Affairs, Ann Arbor, Michigan, USA
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30
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Ribosomopathies: New Therapeutic Perspectives. Cells 2020; 9:cells9092080. [PMID: 32932838 PMCID: PMC7564184 DOI: 10.3390/cells9092080] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/03/2020] [Accepted: 09/08/2020] [Indexed: 12/13/2022] Open
Abstract
Ribosomopathies are a group of rare diseases in which genetic mutations cause defects in either ribosome biogenesis or function, given specific phenotypes. Ribosomal proteins, and multiple other factors that are necessary for ribosome biogenesis (rRNA processing, assembly of subunits, export to cytoplasm), can be affected in ribosomopathies. Despite the need for ribosomes in all cell types, these diseases result mainly in tissue-specific impairments. Depending on the type of ribosomopathy and its pathogenicity, there are many potential therapeutic targets. The present manuscript will review our knowledge of ribosomopathies, discuss current treatments, and introduce the new therapeutic perspectives based on recent research. Diamond–Blackfan anemia, currently treated with blood transfusion prior to steroids, could be managed with a range of new compounds, acting mainly on anemia, such as L-leucine. Treacher Collins syndrome could be managed by various treatments, but it has recently been shown that proteasomal inhibition by MG132 or Bortezomib may improve cranial skeleton malformations. Developmental defects resulting from ribosomopathies could be also treated pharmacologically after birth. It might thus be possible to treat certain ribosomopathies without using multiple treatments such as surgery and transplants. Ribosomopathies remain an open field in the search for new therapeutic approaches based on our recent understanding of the role of ribosomes and progress in gene therapy for curing genetic disorders.
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31
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Exploring lithium's transcriptional mechanisms of action in bipolar disorder: a multi-step study. Neuropsychopharmacology 2020; 45:947-955. [PMID: 31652432 PMCID: PMC7162887 DOI: 10.1038/s41386-019-0556-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 10/01/2019] [Accepted: 10/17/2019] [Indexed: 12/22/2022]
Abstract
Lithium has been the first-line treatment for bipolar disorder (BD) for more than six decades. Although the molecular effects of lithium have been studied extensively and gene expression changes are generally believed to be involved, the specific mechanisms of action that mediate mood regulation are still not known. In this study, a multi-step approach was used to explore the transcriptional changes that may underlie lithium's therapeutic efficacy. First, we identified genes that are associated both with lithium exposure and with BD, and second, we performed differential expression analysis of these genes in brain tissue samples from BD patients (n = 42) and healthy controls (n = 42). To identify genes that are regulated by lithium exposure, we used high-sensitivity RNA-sequencing of corpus callosum (CC) tissue samples from lithium-treated (n = 8) and non-treated (n = 9) rats. We found that lithium exposure significantly affected 1108 genes (FDR < 0.05), 702 up-regulated and 406 down-regulated. These genes were mostly enriched for molecular functions related to signal transduction, including well-established lithium-related pathways such as mTOR and Wnt signaling. To identify genes with differential expression in BD, we performed expression quantitative trait loci (eQTL) analysis on BD-associated genetic variants from the most recent genome-wide association study (GWAS) using three different gene expression databases. We found 307 unique eQTL genes regulated by BD-associated variants, of which 12 were also significantly modulated by lithium treatment in rats. Two of these showed differential expression in the CC of BD cases: RPS23 was significantly down-regulated (p = 0.0036, fc = 0.80), while GRIN2A showed suggestive evidence of down-regulation in BD (p = 0.056, fc = 0.65). Crucially, GRIN2A was also significantly up-regulated by lithium in the rat brains (p = 2.2e-5, fc = 1.6), which suggests that modulation of GRIN2A expression may be a part of the therapeutic effect of the drug. These results indicate that the recent upsurge in research on this central component of the glutamatergic system, as a target of novel therapeutic agents for affective disorders, is warranted and should be intensified.
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32
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Lezzerini M, Penzo M, O'Donohue MF, Marques Dos Santos Vieira C, Saby M, Elfrink HL, Diets IJ, Hesse AM, Couté Y, Gastou M, Nin-Velez A, Nikkels PGJ, Olson AN, Zonneveld-Huijssoon E, Jongmans MCJ, Zhang G, van Weeghel M, Houtkooper RH, Wlodarski MW, Kuiper RP, Bierings MB, van der Werff Ten Bosch J, Leblanc T, Montanaro L, Dinman JD, Da Costa L, Gleizes PE, MacInnes AW. Ribosomal protein gene RPL9 variants can differentially impair ribosome function and cellular metabolism. Nucleic Acids Res 2020; 48:770-787. [PMID: 31799629 PMCID: PMC6954397 DOI: 10.1093/nar/gkz1042] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 10/17/2019] [Accepted: 11/19/2019] [Indexed: 12/20/2022] Open
Abstract
Variants in ribosomal protein (RP) genes drive Diamond-Blackfan anemia (DBA), a bone marrow failure syndrome that can also predispose individuals to cancer. Inherited and sporadic RP gene variants are also linked to a variety of phenotypes, including malignancy, in individuals with no anemia. Here we report an individual diagnosed with DBA carrying a variant in the 5′UTR of RPL9 (uL6). Additionally, we report two individuals from a family with multiple cancer incidences carrying a RPL9 missense variant. Analysis of cells from these individuals reveals that despite the variants both driving pre-rRNA processing defects and 80S monosome reduction, the downstream effects are remarkably different. Cells carrying the 5′UTR variant stabilize TP53 and impair the growth and differentiation of erythroid cells. In contrast, ribosomes incorporating the missense variant erroneously read through UAG and UGA stop codons of mRNAs. Metabolic profiles of cells carrying the 5′UTR variant reveal an increased metabolism of amino acids and a switch from glycolysis to gluconeogenesis while those of cells carrying the missense variant reveal a depletion of nucleotide pools. These findings indicate that variants in the same RP gene can drive similar ribosome biogenesis defects yet still have markedly different downstream consequences and clinical impacts.
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Affiliation(s)
- Marco Lezzerini
- Amsterdam UMC, University of Amsterdam, Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology and Metabolism, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Marianna Penzo
- Laboratorio di Patologia Clinica, Dipartimento di Medicina Specialistica, Diagnostica e Sperimentale and Centro di Ricerca Biomedica Applicata (CRBA), Policlinico Universitario di S. Orsola, Università di Bologna,Via Massarenti 9, 40138 Bologna, Italy
| | - Marie-Françoise O'Donohue
- LBME, Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, 31000 Toulouse, France
| | | | - Manon Saby
- INSERM UMR S1134, F-75015, Paris, France
| | - Hyung L Elfrink
- Amsterdam UMC, University of Amsterdam, Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology and Metabolism, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands.,Amsterdam UMC, University of Amsterdam, Laboratory Genetic Metabolic Diseases, Core Facility Metabolomics, Amsterdam Gastroenterology and Metabolism, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Illja J Diets
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Anne-Marie Hesse
- University Grenoble Alpes, CEA, INSERM, IRIG, BGE, F-38000 Grenoble, France
| | - Yohann Couté
- University Grenoble Alpes, CEA, INSERM, IRIG, BGE, F-38000 Grenoble, France
| | - Marc Gastou
- Paris University, Paris, France.,Laboratory of Excellence for Red Cell, LABEX GR-Ex, F-75015, Paris, France.,Institute Gustave Roussy, Inserm unit U1170, F-94800 Villejuif, France
| | - Alexandra Nin-Velez
- Department of Comparative Biology and Center for Cancer Research, Purdue University, West Lafayette, IN 47907, USA
| | - Peter G J Nikkels
- Department of Pathology, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands
| | - Alexandra N Olson
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD, USA
| | - Evelien Zonneveld-Huijssoon
- Department of Genetics, University Medical Center Utrecht, 3508 AB Utrecht, The Netherlands.,Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Marjolijn C J Jongmans
- Department of Genetics, University Medical Center Utrecht, 3508 AB Utrecht, The Netherlands.,Princess Maxima Center for Pediatric Oncology and Utrecht University Children's Hospital, Utrecht, The Netherlands
| | - GuangJun Zhang
- Department of Comparative Biology and Center for Cancer Research, Purdue University, West Lafayette, IN 47907, USA
| | - Michel van Weeghel
- Amsterdam UMC, University of Amsterdam, Laboratory Genetic Metabolic Diseases, Core Facility Metabolomics, Amsterdam Gastroenterology and Metabolism, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Riekelt H Houtkooper
- Amsterdam UMC, University of Amsterdam, Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology and Metabolism, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Marcin W Wlodarski
- Department of Pediatrics and Adolescent Medicine, Division of Pediatric Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, D-79106 Freiburg, Germany.,St. Jude's Children Research Hospital, Memphis, TN, USA
| | - Roland P Kuiper
- Department of Genetics, University Medical Center Utrecht, 3508 AB Utrecht, The Netherlands
| | - Marc B Bierings
- Princess Maxima Center for Pediatric Oncology and Utrecht University Children's Hospital, Utrecht, The Netherlands
| | | | - Thierry Leblanc
- Pediatric Hematology/Oncology Service, Robert Debré Hospital, F-75019 Paris, France
| | - Lorenzo Montanaro
- Laboratorio di Patologia Clinica, Dipartimento di Medicina Specialistica, Diagnostica e Sperimentale and Centro di Ricerca Biomedica Applicata (CRBA), Policlinico Universitario di S. Orsola, Università di Bologna,Via Massarenti 9, 40138 Bologna, Italy
| | - Jonathan D Dinman
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD, USA
| | - Lydie Da Costa
- INSERM UMR S1134, F-75015, Paris, France.,Paris University, Paris, France.,Laboratory of Excellence for Red Cell, LABEX GR-Ex, F-75015, Paris, France.,Hematology Lab, Robert Debré Hospital, F-75019 Paris, France
| | - Pierre-Emmanuel Gleizes
- LBME, Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, 31000 Toulouse, France
| | - Alyson W MacInnes
- Amsterdam UMC, University of Amsterdam, Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology and Metabolism, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
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33
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Ford D. Ribosomal heterogeneity - A new inroad for pharmacological innovation. Biochem Pharmacol 2020; 175:113874. [PMID: 32105657 DOI: 10.1016/j.bcp.2020.113874] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Accepted: 02/20/2020] [Indexed: 12/13/2022]
Abstract
The paradigm of ribosome usage in protein translation has shifted from a stance proposed as scientists began to unpick the genetic code that each mRNA was partnered by its own, unique ribosome to a rapid reversal of this view that ribosomes are completely interchangeable and simply recruited to mRNAs from a completely homogenous cellular pool. Evidence that the ribosomal proteome, ribosomal gene transcriptome and ribosome protein and RNA modifications differ between cells and tissues points to the fact that ribosomes are heterogeneous in their composition and have a degree of specialisation in their function. It has also been posited that the tissue-specificity of ribosome diseases provides an indication of functional ribosome heterogeneity, but there are substantial caveats to this interpretation. Only now have proteomic technologies developed to a level enabling accurate stoichiometric comparison of the abundance of specific ribosomal proteins in actively translating ribosomes and to measure protein in non-denatured ribosomes. This poises the field for the provocation that ribosome heterogeneity offers a novel and powerful inroad for the pharmacological targeting of disease. Such ribosome-targeted treatments may extend beyond specific ribosomopathies through strategies such as targeting features of ribosomes that are unique to diseased cells, particularly cancer cells, or to activated immune cells, as well as augmenting the action of other drugs through weakening the production of new proteins in target tissues. We may also be able to harness the potential power in ribosome diversity and specialism to better tune synthetic biology for the production of pharmaceutical proteins.
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Affiliation(s)
- Dianne Ford
- Northumbria University, Northumberland Building, Northumberland Road, Newcastle upon Tyne, NE1 8ST, United Kingdom.
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34
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Onisko BC. The Hydroxyproline Proteome of HeLa Cells with Emphasis on the Active Sites of Protein Disulfide Isomerases. J Proteome Res 2020; 19:756-768. [DOI: 10.1021/acs.jproteome.9b00625] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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35
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Le Caignec C, Ory B, Lamoureux F, O'Donohue MF, Orgebin E, Lindenbaum P, Téletchéa S, Saby M, Hurst A, Nelson K, Gilbert SR, Wilnai Y, Zeitlin L, Segev E, Tesfaye R, Nizon M, Cogne B, Bezieau S, Geoffroy L, Hamel A, Mayrargue E, de Courtivron B, Decock-Giraudaud A, Charrier C, Pichon O, Retière C, Redon R, Pepler A, McWalter K, Da Costa L, Toutain A, Gleizes PE, Baud'huin M, Isidor B. RPL13 Variants Cause Spondyloepimetaphyseal Dysplasia with Severe Short Stature. Am J Hum Genet 2019; 105:1040-1047. [PMID: 31630789 DOI: 10.1016/j.ajhg.2019.09.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 09/20/2019] [Indexed: 01/04/2023] Open
Abstract
Variants in genes encoding ribosomal proteins have thus far been associated with Diamond-Blackfan anemia, a rare inherited bone marrow failure, and isolated congenital asplenia. Here, we report one de novo missense variant and three de novo splice variants in RPL13, which encodes ribosomal protein RPL13 (also called eL13), in four unrelated individuals with a rare bone dysplasia causing severe short stature. The three splice variants (c.477+1G>T, c.477+1G>A, and c.477+2 T>C) result in partial intron retention, which leads to an 18-amino acid insertion. In contrast to observations from Diamond-Blackfan anemia, we detected no evidence of significant pre-rRNA processing disturbance in cells derived from two affected individuals. Consistently, we showed that the insertion-containing protein is stably expressed and incorporated into 60S subunits similar to the wild-type protein. Erythroid proliferation in culture and ribosome profile on sucrose gradient are modified, suggesting a change in translation dynamics. We also provide evidence that RPL13 is present at high levels in chondrocytes and osteoblasts in mouse growth plates. Taken together, we show that the identified RPL13 variants cause a human ribosomopathy defined by a rare skeletal dysplasia, and we highlight the role of this ribosomal protein in bone development.
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Affiliation(s)
| | - Benjamin Ory
- Nantes Université, INSERM, Bone sarcomas and remodeling of calcified tissues, UMR 1238, F-44000 Nantes, France
| | - François Lamoureux
- Nantes Université, INSERM, Bone sarcomas and remodeling of calcified tissues, UMR 1238, F-44000 Nantes, France
| | - Marie-Francoise O'Donohue
- Laboratoire de Biologie Moléculaire Eucaryote, Centre de Biologie Intégrative (CBI), Université de Toulouse, UPS, CNRS, 31062 Toulouse, France
| | - Emilien Orgebin
- Nantes Université, INSERM, Bone sarcomas and remodeling of calcified tissues, UMR 1238, F-44000 Nantes, France
| | - Pierre Lindenbaum
- L'institut du thorax, INSERM, CNRS, Université de Nantes, F-44000 Nantes, France
| | - Stéphane Téletchéa
- Nantes Université, CNRS, Unité Fonctionnalité et Ingénierie des Protéines (UFIP), UMR CNRS 6286, F-44000 Nantes, France
| | - Manon Saby
- INSERM U1149/ERL 8252, Inflammation Research Center, 75018 Paris, France
| | - Anna Hurst
- Department of Genetics, University of Alabama at Birmingham, Birmingham, AL 35233, USA
| | - Katherine Nelson
- Department of Genetics, University of Alabama at Birmingham, Birmingham, AL 35233, USA
| | - Shawn R Gilbert
- Children's of Alabama, Department of Orthopaedic Surgery, University of Alabama at Birmingham, Birmingham, AL 35233, USA
| | - Yael Wilnai
- Genetic Institute, Tel Aviv Sourasky Medical Center, Tel Aviv 6423906, Israel
| | - Leonid Zeitlin
- Pediatric Orthopedic Department, Dana-Dwek Children's Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv 6423906, Israel
| | - Eitan Segev
- Pediatric Orthopedic Department, Dana-Dwek Children's Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv 6423906, Israel
| | - Robel Tesfaye
- Nantes Université, INSERM, Bone sarcomas and remodeling of calcified tissues, UMR 1238, F-44000 Nantes, France
| | - Mathilde Nizon
- CHU Nantes, Service de génétique médicale, F-44000 Nantes, France
| | - Benjamin Cogne
- CHU Nantes, Service de génétique médicale, F-44000 Nantes, France
| | - Stéphane Bezieau
- CHU Nantes, Service de génétique médicale, F-44000 Nantes, France
| | - Loic Geoffroy
- Service d'Orthopédie Pédiatrique, CHU de Nantes, F-44000 Nantes, France
| | - Antoine Hamel
- Service d'Orthopédie Pédiatrique, CHU de Nantes, F-44000 Nantes, France
| | | | - Benoît de Courtivron
- Service de Chirurgie Orthopédique Pédiatrique, CHU de Tours, 37044 Tours, France
| | | | - Céline Charrier
- Nantes Université, INSERM, Bone sarcomas and remodeling of calcified tissues, UMR 1238, F-44000 Nantes, France
| | - Olivier Pichon
- CHU Nantes, Service de génétique médicale, F-44000 Nantes, France
| | - Christelle Retière
- Etablissement Français du Sang, F-44000 Nantes, France; CRCINA, INSERM, CNRS, Université d'Angers, Université de Nantes, F-44000 Nantes, France
| | - Richard Redon
- L'institut du thorax, INSERM, CNRS, Université de Nantes, F-44000 Nantes, France
| | - Alexander Pepler
- Center for Genomics and Transcriptomics and Praxis für Humangenetik Tübingen, 72076 Tübingen, Germany
| | | | - Lydie Da Costa
- INSERM U1149/ERL 8252, Inflammation Research Center, 75018 Paris, France; AP-HP, Service d'Hématologie Biologique, Hôpital R. Debré, Université Paris 7 Denis Diderot, Sorbonne Paris Cité, 75019 Paris, France
| | | | - Pierre-Emmanuel Gleizes
- Laboratoire de Biologie Moléculaire Eucaryote, Centre de Biologie Intégrative (CBI), Université de Toulouse, UPS, CNRS, 31062 Toulouse, France
| | - Marc Baud'huin
- Nantes Université, CHU Nantes, INSERM, Bone sarcomas and remodeling of calcified tissues, UMR 1238, F-44000 Nantes, France.
| | - Bertrand Isidor
- CHU Nantes, Service de génétique médicale, F-44000 Nantes, France.
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Farley-Barnes KI, Ogawa LM, Baserga SJ. Ribosomopathies: Old Concepts, New Controversies. Trends Genet 2019; 35:754-767. [PMID: 31376929 PMCID: PMC6852887 DOI: 10.1016/j.tig.2019.07.004] [Citation(s) in RCA: 109] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 07/02/2019] [Accepted: 07/09/2019] [Indexed: 12/30/2022]
Abstract
Ribosomopathies are a diverse subset of diseases caused by reduced expression of, or mutations in, factors necessary for making ribosomes, the protein translation machinery in the cell. Despite the ubiquitous need for ribosomes in all cell types, ribosomopathies manifest with tissue-specific defects and sometimes increased cancer susceptibility, but few treatments target the underlying cause. By highlighting new research in the field, we review current hypotheses for the basis of this tissue specificity. Based on new work, we broaden our understanding of the role of ribosome biogenesis in diverse tissue types throughout embryonic development. We also pose the question of whether previously described human conditions such as aging can be at least partially attributed to defects in making ribosomes.
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Affiliation(s)
- Katherine I Farley-Barnes
- Department of Molecular Biophysics and Biochemistry, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Lisa M Ogawa
- Department of Molecular Biophysics and Biochemistry, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Susan J Baserga
- Department of Molecular Biophysics and Biochemistry, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Genetics, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, CT 06520, USA.
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37
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Porokhovnik L. Individual Copy Number of Ribosomal Genes as a Factor of Mental Retardation and Autism Risk and Severity. Cells 2019; 8:cells8101151. [PMID: 31561466 PMCID: PMC6830322 DOI: 10.3390/cells8101151] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 09/21/2019] [Accepted: 09/24/2019] [Indexed: 12/12/2022] Open
Abstract
Autism is a complex multifactorial developmental disorder characterized by deficits in communication and restricted interests, often followed by mental retardation. Autism spectrum disorders (ASD) are caused by defects in miscellaneous molecular mechanisms, many of which remain unclear. But a considerable part of the known pathways converges on protein synthesis or degradation processes at different stages in the dendrites, laying the foundation for a concept of disturbed “translational homeostasis” or “proteostasis” in autism. The protein synthesis is conducted on ribosomes, cellular organelles consisting from a complex of riboproteins and a ribosomal RNA (rRNA) framework. The rRNA is encoded by ribosomal genes (RG) existing in multiple copies in the genome. The more copies of RG that are contained in the genome, the higher is the peak (maximum possible) ribosome abundance in the cell. A hypothesis is proposed that the RG copy number, through determining the quantity of ribosomes available in the dendrites, modulates the level of local dendritic translation and thus is a factor of risk and severity of a series of neuropsychiatric disorders caused by aberrant dendritic translation. A carrier of very low copy number of ribosomal genes is expected to have a milder form of ASD than a subject with the same epigenetic and genetic background, but a higher ribosomal gene dosage. Various ways of evaluation and testing the hypothesis on clinical material and animal models are suggested.
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Affiliation(s)
- Lev Porokhovnik
- Research Centre for Medical Genetics, 1 Moskvorechie str., Moscow 115478, Russia.
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38
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Genuth NR, Barna M. Heterogeneity and specialized functions of translation machinery: from genes to organisms. Nat Rev Genet 2019; 19:431-452. [PMID: 29725087 DOI: 10.1038/s41576-018-0008-z] [Citation(s) in RCA: 147] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Regulation of mRNA translation offers the opportunity to diversify the expression and abundance of proteins made from individual gene products in cells, tissues and organisms. Emerging evidence has highlighted variation in the composition and activity of several large, highly conserved translation complexes as a means to differentially control gene expression. Heterogeneity and specialized functions of individual components of the ribosome and of the translation initiation factor complexes eIF3 and eIF4F, which are required for recruitment of the ribosome to the mRNA 5' untranslated region, have been identified. In this Review, we summarize the evidence for selective mRNA translation by components of these macromolecular complexes as a means to dynamically control the translation of the proteome in time and space. We further discuss the implications of this form of gene expression regulation for a growing number of human genetic disorders associated with mutations in the translation machinery.
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Affiliation(s)
- Naomi R Genuth
- Departments of Genetics and Developmental Biology, Stanford University, Stanford, CA, USA.,Department of Biology, Stanford University, Stanford, CA, USA
| | - Maria Barna
- Departments of Genetics and Developmental Biology, Stanford University, Stanford, CA, USA.
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39
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Pickel C, Günter J, Ruiz-Serrano A, Spielmann P, Fabrizio JA, Wolski W, Peet DJ, Wenger RH, Scholz CC. Oxygen-dependent bond formation with FIH regulates the activity of the client protein OTUB1. Redox Biol 2019; 26:101265. [PMID: 31299612 PMCID: PMC6624438 DOI: 10.1016/j.redox.2019.101265] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 06/28/2019] [Accepted: 06/30/2019] [Indexed: 12/30/2022] Open
Abstract
Protein:protein interactions are the basis of molecular communication and are usually of transient non-covalent nature, while covalent interactions other than ubiquitination are rare. For cellular adaptations, the cellular oxygen and peroxide sensor factor inhibiting HIF (FIH) confers oxygen and oxidant stress sensitivity to the hypoxia inducible factor (HIF) by asparagine hydroxylation. We investigated whether FIH contributes to hypoxia adaptation also through other mechanisms and identified a hypoxia sensitive, likely covalent, bond formation by FIH with several client proteins, including the deubiquitinase ovarian tumor domain containing ubiquitin aldehyde binding protein 1 (OTUB1). Biochemical analyses were consistent with a co-translational amide bond formation between FIH and OTUB1, occurring within mammalian and bacterial cells but not between separately purified proteins. Bond formation is catalysed by FIH and highly dependent on oxygen availability in the cellular microenvironment. Within cells, a heterotrimeric complex is formed, consisting of two FIH and one covalently linked OTUB1. Complexation of OTUB1 by FIH regulates OTUB1 deubiquitinase activity. Our findings reveal an alternative mechanism for hypoxia adaptation with remarkably high oxygen sensitivity, mediated through covalent protein-protein interactions catalysed by an asparagine modifying dioxygenase. FIH forms a (likely amide) bond with client proteins. Bond formation is highly hypoxia sensitive and occurs co-translationally. FIH forms a heterotrimer with the client protein OTUB1 (FIH2OTUB11). Complex formation between OTUB1 and FIH regulates OTUB1 deubiquitinase activity. Bond formation by hydroxylases is an alternative mechanism for hypoxia adaptation.
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Affiliation(s)
- Christina Pickel
- Institute of Physiology, University of Zurich, 8057, Zurich, Switzerland
| | - Julia Günter
- Institute of Physiology, University of Zurich, 8057, Zurich, Switzerland; National Centre of Competence in Research 'Kidney.CH', Switzerland
| | | | - Patrick Spielmann
- Institute of Physiology, University of Zurich, 8057, Zurich, Switzerland
| | | | - Witold Wolski
- Functional Genomics Center Zurich, University of Zurich, 8057, Zurich, Switzerland
| | - Daniel J Peet
- School of Biological Sciences, University of Adelaide, Adelaide, SA, 5005, Australia
| | - Roland H Wenger
- Institute of Physiology, University of Zurich, 8057, Zurich, Switzerland; National Centre of Competence in Research 'Kidney.CH', Switzerland.
| | - Carsten C Scholz
- Institute of Physiology, University of Zurich, 8057, Zurich, Switzerland; National Centre of Competence in Research 'Kidney.CH', Switzerland.
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40
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Bohnsack KE, Bohnsack MT. Uncovering the assembly pathway of human ribosomes and its emerging links to disease. EMBO J 2019; 38:e100278. [PMID: 31268599 PMCID: PMC6600647 DOI: 10.15252/embj.2018100278] [Citation(s) in RCA: 133] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 02/18/2019] [Accepted: 04/26/2019] [Indexed: 12/12/2022] Open
Abstract
The essential cellular process of ribosome biogenesis is at the nexus of various signalling pathways that coordinate protein synthesis with cellular growth and proliferation. The fact that numerous diseases are caused by defects in ribosome assembly underscores the importance of obtaining a detailed understanding of this pathway. Studies in yeast have provided a wealth of information about the fundamental principles of ribosome assembly, and although many features are conserved throughout eukaryotes, the larger size of human (pre-)ribosomes, as well as the evolution of additional regulatory networks that can modulate ribosome assembly and function, have resulted in a more complex assembly pathway in humans. Notably, many ribosome biogenesis factors conserved from yeast appear to have subtly different or additional functions in humans. In addition, recent genome-wide, RNAi-based screens have identified a plethora of novel factors required for human ribosome biogenesis. In this review, we discuss key aspects of human ribosome production, highlighting differences to yeast, links to disease, as well as emerging concepts such as extra-ribosomal functions of ribosomal proteins and ribosome heterogeneity.
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Affiliation(s)
- Katherine E Bohnsack
- Department of Molecular BiologyUniversity Medical Center GöttingenGöttingenGermany
| | - Markus T Bohnsack
- Department of Molecular BiologyUniversity Medical Center GöttingenGöttingenGermany
- Göttingen Center for Molecular BiosciencesGeorg‐August UniversityGöttingenGermany
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41
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Correddu D, Montaño López JDJ, Vadakkedath PG, Lai A, Pernes JI, Watson PR, Leung IKH. An improved method for the heterologous production of soluble human ribosomal proteins in Escherichia coli. Sci Rep 2019; 9:8884. [PMID: 31222068 PMCID: PMC6586885 DOI: 10.1038/s41598-019-45323-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 05/31/2019] [Indexed: 11/11/2022] Open
Abstract
Human ribosomal proteins play important structural and functional roles in the ribosome and in protein synthesis. An efficient method to recombinantly produce and purify these proteins would enable their full characterisation. However, the production of human ribosomal proteins can be challenging. The only published method about the recombinant production of human ribosomal proteins involved the recovery of proteins from inclusion bodies, a process that is tedious and may lead to significant loss of yield. Herein, we explored the use of different Escherichia coli competent cells and fusion protein tags for the recombinant production of human ribosomal proteins. We found that, by using thioredoxin as a fusion protein, soluble ribosomal protein could be obtained directly from cell lysates, thus leading to an improved method to recombinantly produce these proteins.
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Affiliation(s)
- Danilo Correddu
- School of Chemical Sciences, The University of Auckland, Private Bag 92019, Victoria Street West, Auckland, 1142, New Zealand
| | - José de Jesús Montaño López
- School of Chemical Sciences, The University of Auckland, Private Bag 92019, Victoria Street West, Auckland, 1142, New Zealand.,Facultad de Ingeniería, Universidad Nacional Autónoma de México, Av. Universidad 3000, Ciudad Universitaria, Coyoacán, Cd. Mx., CP 04510, Mexico
| | - Praveen G Vadakkedath
- School of Chemical Sciences, The University of Auckland, Private Bag 92019, Victoria Street West, Auckland, 1142, New Zealand.,The MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, PO Box 600, Wellington, 6140, New Zealand
| | - Amy Lai
- School of Chemical Sciences, The University of Auckland, Private Bag 92019, Victoria Street West, Auckland, 1142, New Zealand
| | - Jane I Pernes
- School of Chemical Sciences, The University of Auckland, Private Bag 92019, Victoria Street West, Auckland, 1142, New Zealand.,School of Cellular and Molecular Medicine, University of Bristol, Biomedical Sciences Building, University Walk, Bristol, BS8 1TD, United Kingdom
| | - Paris R Watson
- School of Chemical Sciences, The University of Auckland, Private Bag 92019, Victoria Street West, Auckland, 1142, New Zealand.,School of Biological Sciences, Victoria University of Wellington, PO Box 600, Wellington, 6140, New Zealand
| | - Ivanhoe K H Leung
- School of Chemical Sciences, The University of Auckland, Private Bag 92019, Victoria Street West, Auckland, 1142, New Zealand. .,Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Private Bag 92019, Victoria Street West, Auckland, 1142, New Zealand.
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Phan T, Khalid F, Iben S. Nucleolar and Ribosomal Dysfunction-A Common Pathomechanism in Childhood Progerias? Cells 2019; 8:E534. [PMID: 31167386 PMCID: PMC6627804 DOI: 10.3390/cells8060534] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 05/21/2019] [Accepted: 06/02/2019] [Indexed: 01/03/2023] Open
Abstract
The nucleolus organizes around the sites of transcription by RNA polymerase I (RNA Pol I). rDNA transcription by this enzyme is the key step of ribosome biogenesis and most of the assembly and maturation processes of the ribosome occur co-transcriptionally. Therefore, disturbances in rRNA transcription and processing translate to ribosomal malfunction. Nucleolar malfunction has recently been described in the classical progeria of childhood, Hutchinson-Gilford syndrome (HGPS), which is characterized by severe signs of premature aging, including atherosclerosis, alopecia, and osteoporosis. A deregulated ribosomal biogenesis with enlarged nucleoli is not only characteristic for HGPS patients, but it is also found in the fibroblasts of "normal" aging individuals. Cockayne syndrome (CS) is also characterized by signs of premature aging, including the loss of subcutaneous fat, alopecia, and cataracts. It has been shown that all genes in which a mutation causes CS, are involved in rDNA transcription by RNA Pol I. A disturbed ribosomal biogenesis affects mitochondria and translates into ribosomes with a reduced translational fidelity that causes endoplasmic reticulum (ER) stress and apoptosis. Therefore, it is speculated that disease-causing disturbances in the process of ribosomal biogenesis may be more common than hitherto anticipated.
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Affiliation(s)
- Tamara Phan
- Department of Dermatology, Ulm University, James-Franck Ring N27, 89081 Ulm, Germany.
| | - Fatima Khalid
- Department of Dermatology, Ulm University, James-Franck Ring N27, 89081 Ulm, Germany.
| | - Sebastian Iben
- Department of Dermatology, Ulm University, James-Franck Ring N27, 89081 Ulm, Germany.
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Fujii K, Susanto TT, Saurabh S, Barna M. Decoding the Function of Expansion Segments in Ribosomes. Mol Cell 2019; 72:1013-1020.e6. [PMID: 30576652 DOI: 10.1016/j.molcel.2018.11.023] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 10/30/2018] [Accepted: 11/15/2018] [Indexed: 10/27/2022]
Abstract
Expansion segments (ESs) are enigmatic insertions within the eukaryotic ribosome, the longest of which resemble tentacle-like extensions that vary in length and sequence across evolution, with a largely unknown function. By selectively engineering rRNA in yeast, we find that one of the largest ESs, ES27L, has an unexpected function in translation fidelity. Ribosomes harboring a deletion in the distal portion of ES27L have increased amino acid misincorporation, as well as readthrough and frameshifting errors. By employing quantitative mass spectrometry, we further find that ES27L acts as an RNA scaffold to facilitate binding of a conserved enzyme, methionine amino peptidase (MetAP). We show that MetAP unexpectedly controls the accuracy of ribosome decoding, which is coupled to an increase in its enzymatic function through its interaction with ES27L. These findings reveal that variable ESs of the ribosome serve important functional roles and act as platforms for the binding of proteins that modulate translation across evolution.
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Affiliation(s)
- Kotaro Fujii
- Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA; Department of Genetics, Stanford University, Stanford, CA 94305, USA
| | - Teodorus Theo Susanto
- Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA; Department of Genetics, Stanford University, Stanford, CA 94305, USA
| | - Saumya Saurabh
- Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA
| | - Maria Barna
- Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA; Department of Genetics, Stanford University, Stanford, CA 94305, USA.
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Stoehr A, Kennedy L, Yang Y, Patel S, Lin Y, Linask KL, Fergusson M, Zhu J, Gucek M, Zou J, Murphy E. The ribosomal prolyl-hydroxylase OGFOD1 decreases during cardiac differentiation and modulates translation and splicing. JCI Insight 2019; 5:128496. [PMID: 31112528 DOI: 10.1172/jci.insight.128496] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
The mechanisms regulating translation and splicing are not well understood. We provide insight into a new regulator of translation, OGFOD1 (2-oxoglutarate and iron dependent oxygenase domain-containing protein 1), which is a prolyl-hydroxylase that catalyzes the posttranslational hydroxylation of Pro-62 in the small ribosomal protein S23. We show that deletion of OGFOD1 in an in vitro model of human cardiomyocytes decreases translation of specific proteins (e.g., RNA-binding proteins) and alters splicing. RNA sequencing showed poor correlation between changes in mRNA and protein synthesis, suggesting that posttranscriptional regulation was the primary cause for the observed differences. We found that loss of OGFOD1 and the resultant alterations in protein translation modulates the cardiac proteome, shifting it towards higher protein amounts of sarcomeric proteins such as cardiac troponins, titin and cardiac myosin binding protein C. Furthermore, we found a decrease of OGFOD1 during cardiomyocyte differentiation. These results suggest that loss of OGFOD1 modulates protein translation and splicing, thereby leading to alterations in the cardiac proteome and highlight the role of altered translation and splicing in regulating the proteome..
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Affiliation(s)
| | | | | | | | - Yongshun Lin
- iPS Cell Core Facility, National Heart, Lung, and Blood Institute, NIH, Bethesda, Maryland, USA
| | - Kaari L Linask
- iPS Cell Core Facility, National Heart, Lung, and Blood Institute, NIH, Bethesda, Maryland, USA
| | | | - Jun Zhu
- DNA Sequencing and Genomics Core
| | | | - Jizhong Zou
- iPS Cell Core Facility, National Heart, Lung, and Blood Institute, NIH, Bethesda, Maryland, USA
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45
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Ferretti MB, Karbstein K. Does functional specialization of ribosomes really exist? RNA (NEW YORK, N.Y.) 2019; 25:521-538. [PMID: 30733326 PMCID: PMC6467006 DOI: 10.1261/rna.069823.118] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
It has recently become clear that ribosomes are much more heterogeneous than previously thought, with diversity arising from rRNA sequence and modifications, ribosomal protein (RP) content and posttranslational modifications (PTMs), as well as bound nonribosomal proteins. In some cases, the existence of these diverse ribosome populations has been verified by biochemical or structural methods. Furthermore, knockout or knockdown of RPs can diversify ribosome populations, while also affecting the translation of some mRNAs (but not others) with biological consequences. However, the effects on translation arising from depletion of diverse proteins can be highly similar, suggesting that there may be a more general defect in ribosome function or stability, perhaps arising from reduced ribosome numbers. Consistently, overall reduced ribosome numbers can differentially affect subclasses of mRNAs, necessitating controls for specificity. Moreover, in order to study the functional consequences of ribosome diversity, perturbations including affinity tags and knockouts are introduced, which can also affect the outcome of the experiment. Here we review the available literature to carefully evaluate whether the published data support functional diversification, defined as diverse ribosome populations differentially affecting translation of distinct mRNA (classes). Based on these observations and the commonly observed cellular responses to perturbations in the system, we suggest a set of important controls to validate functional diversity, which should include gain-of-function assays and the demonstration of inducibility under physiological conditions.
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Affiliation(s)
- Max B Ferretti
- Department of Integrative Structural and Molecular Biology, The Scripps Research Institute, Jupiter, Florida 33458, USA
- The Skaggs Graduate School of Chemical and Biological Sciences, The Scripps Research Institute, Jupiter, Florida 33458, USA
| | - Katrin Karbstein
- Department of Integrative Structural and Molecular Biology, The Scripps Research Institute, Jupiter, Florida 33458, USA
- The Skaggs Graduate School of Chemical and Biological Sciences, The Scripps Research Institute, Jupiter, Florida 33458, USA
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Abstract
Long thought to be too big and too ubiquitous to fail, we now know that human cells can fail to make sufficient amounts of ribosomes, causing a number of diseases collectively known as ribosomopathies. The best characterized ribosomopathies, with the exception of Treacher Collins syndrome, are inherited bone marrow failure syndromes, each of which has a marked increase in cancer predisposition relative to the general population. Although rare, emerging data reveal that the inherited bone marrow failure syndromes may be underdiagnosed on the basis of classical symptomology, leaving undiagnosed patients with these syndromes at an elevated risk of cancer without adequate counselling and surveillance. The link between the inherited ribosomopathies and cancer has led to greater awareness that somatic mutations in factors involved in ribosome biogenesis may also be drivers in sporadic cancers. Our goal here is to compare and contrast the pathophysiological mechanisms underpinning ribosomopathies to gain a better understanding of the mechanisms that predispose these disorders to cancer.
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Affiliation(s)
- Anna Aspesi
- Department of Health Sciences, University of Piemonte Orientale, Novara, Italy
| | - Steven R Ellis
- Department of Biochemistry and Molecular Genetics, University of Louisville, Louisville, KY, USA.
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Sulima SO, Kampen KR, De Keersmaecker K. Cancer Biogenesis in Ribosomopathies. Cells 2019; 8:E229. [PMID: 30862070 PMCID: PMC6468915 DOI: 10.3390/cells8030229] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 03/05/2019] [Accepted: 03/07/2019] [Indexed: 12/23/2022] Open
Abstract
Ribosomopathies are congenital diseases with defects in ribosome assembly and are characterized by elevated cancer risks. Additionally, somatic mutations in ribosomal proteins have recently been linked to a variety of cancers. Despite a clear correlation between ribosome defects and cancer, the molecular mechanisms by which these defects promote tumorigenesis are unclear. In this review, we focus on the emerging mechanisms that link ribosomal defects in ribosomopathies to cancer progression. This includes functional "onco-specialization" of mutant ribosomes, extra-ribosomal consequences of mutations in ribosomal proteins and ribosome assembly factors, and effects of ribosomal mutations on cellular stress and metabolism. We integrate some of these recent findings in a single model that can partially explain the paradoxical transition from hypo- to hyperproliferation phenotypes, as observed in ribosomopathies. Finally, we discuss the current and potential strategies, and the associated challenges for therapeutic intervention in ribosome-mutant diseases.
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Affiliation(s)
- Sergey O Sulima
- Department of Oncology, KU Leuven, LKI⁻Leuven Cancer Institute, 3000 Leuven, Belgium.
| | - Kim R Kampen
- Department of Oncology, KU Leuven, LKI⁻Leuven Cancer Institute, 3000 Leuven, Belgium.
| | - Kim De Keersmaecker
- Department of Oncology, KU Leuven, LKI⁻Leuven Cancer Institute, 3000 Leuven, Belgium.
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Engidaye G, Melku M, Enawgaw B. Diamond Blackfan Anemia: Genetics, Pathogenesis, Diagnosis and Treatment. EJIFCC 2019; 30:67-81. [PMID: 30881276 PMCID: PMC6416817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Diamond Blackfan Anaemia (DBA) is a sporadic inherited anemia with broad spectrum of anomalies that are presented soon after delivery. It is inherited mainly in autosomal dominant inheritance manner and caused by mutations and deletions in either large or small ribosomal protein genes that results in an imbalance between the biosynthesis of rRNA and ribosomal proteins, eventually the activation and stabilization of p53. Diagnosing DBA is usually problematic due to a partial phenotype and its wide inconsistency in its clinical expression; however, molecular studies have identified a heterozygous mutated gene in up to 50% of the DBA cases and corticosteroid drugs are the backbone treatment options of DBA. Anomalies in bone marrow function in DBA cases are broadly associated with both congenital and acquired bone marrow failure syndromes in human. In this review different literatures were searched in Medline (eg. PubMed, PMC, Hinari, Google scholar), OMIM, EMBASE by using search engines (Google, Yahoo, Baidu Ask.com) and searching was performed by using search key words (DBA, ribosomopathies, Bone Marrow Failure Syndromes, pure red cell aplasia). Only human studies were included. This review is summarizing the current understandings of DBA.
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Affiliation(s)
- Getabalew Engidaye
- Amhara Regional State Debre Berhan Health Science College, Debre Berhan, Ethiopia, Department of Hematology & Immunohematology, School of Biomedical and Laboratory Sciences, College of Medicine and Health Sciences, University of Gondar, Ethiopia
| | - Mulugeta Melku
- Department of Hematology & Immunohematology, School of Biomedical and Laboratory Sciences, College of Medicine and Health Sciences, University of Gondar, Ethiopia
| | - Bamlaku Enawgaw
- Department of Hematology & Immunohematology, School of Biomedical and Laboratory Sciences, College of Medicine and Health Sciences, University of Gondar, Ethiopia,Corresponding author: Bamlaku Enawgaw Department of Hematology & Immunohematology School of Biomedical and Laboratory Sciences College of Medicine and Health Sciences University of Gondar Ethiopia E-mail:
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49
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Hydroxylation of protein constituents of the human translation system: structural aspects and functional assignments. Future Med Chem 2019; 11:357-369. [PMID: 30802140 DOI: 10.4155/fmc-2018-0317] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
During the current decade, data on the post-translational hydroxylation of specific amino acid residues of some ribosomal proteins and translation factors in both eukaryotes and eubacteria have accumulated. The reaction is catalyzed by dedicated oxygenases (so-called ribosomal oxygenases), whose action is impaired under hypoxia conditions. The modification occurs at amino acid residues directly involved in the formation of the main functional sites of ribosomes and factors. This review summarizes currently available data on the specific hydroxylation of protein constituents of eukaryotic and eubacterial translation systems with a special emphasis on the human system, as well as on the links between hypoxia impacts on the operation of ribosomal oxygenases, the functioning of the translational apparatus and human health problems.
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50
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Cenik ES, Meng X, Tang NH, Hall RN, Arribere JA, Cenik C, Jin Y, Fire A. Maternal Ribosomes Are Sufficient for Tissue Diversification during Embryonic Development in C. elegans. Dev Cell 2019; 48:811-826.e6. [PMID: 30799226 DOI: 10.1016/j.devcel.2019.01.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 11/06/2018] [Accepted: 01/21/2019] [Indexed: 12/20/2022]
Abstract
Caenorhabditis elegans provides an amenable system to explore whether newly composed ribosomes are required to progress through development. Despite the complex pattern of tissues that are formed during embryonic development, we found that null homozygotes lacking any of the five different ribosomal proteins (RPs) can produce fully functional first-stage larvae, with similar developmental competence seen upon complete deletion of the multi-copy ribosomal RNA locus. These animals, relying on maternal but not zygotic contribution of ribosomal components, are capable of completing embryogenesis. In the absence of new ribosomal components, the resulting animals are arrested before progression from the first larval stage and fail in two assays for postembryonic plasticity of neuronal structure. Mosaic analyses of larvae that are a mixture of ribosome-competent and non-competent cells suggest a global regulatory mechanism in which ribosomal insufficiency in a subset of cells triggers organism-wide growth arrest.
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Affiliation(s)
- Elif Sarinay Cenik
- Department of Pathology, Stanford University Medical School, Stanford, CA, USA; Department of Molecular Biosciences, University of Texas Austin, Austin, TX, USA
| | - Xuefeng Meng
- Department of Cellular and Molecular Medicine, School of Medicine, University of California, San Diego, San Diego, CA, USA
| | - Ngang Heok Tang
- Department of Cellular and Molecular Medicine, School of Medicine, University of California, San Diego, San Diego, CA, USA
| | | | - Joshua A Arribere
- Department of MCD Biology, University of California, Santa Cruz, Santa Cruz, CA, USA
| | - Can Cenik
- Department of Molecular Biosciences, University of Texas Austin, Austin, TX, USA
| | - Yishi Jin
- Department of Cellular and Molecular Medicine, School of Medicine, University of California, San Diego, San Diego, CA, USA
| | - Andrew Fire
- Department of Pathology, Stanford University Medical School, Stanford, CA, USA.
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