1
|
Havkin-Solomon T, Fraticelli D, Bahat A, Hayat D, Reuven N, Shaul Y, Dikstein R. Translation regulation of specific mRNAs by RPS26 C-terminal RNA-binding tail integrates energy metabolism and AMPK-mTOR signaling. Nucleic Acids Res 2023; 51:4415-4428. [PMID: 37013984 DOI: 10.1093/nar/gkad238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 02/16/2023] [Accepted: 03/31/2023] [Indexed: 04/05/2023] Open
Abstract
Increasing evidence suggests that ribosome composition and modifications contribute to translation control. Whether direct mRNA binding by ribosomal proteins regulates the translation of specific mRNA and contributes to ribosome specialization has been poorly investigated. Here, we used CRISPR-Cas9 to mutate the RPS26 C-terminus (RPS26dC) predicted to bind AUG upstream nucleotides at the exit channel. RPS26 binding to positions -10 to -16 of short 5' untranslated region (5'UTR) mRNAs exerts positive and negative effects on translation directed by Kozak and Translation Initiator of Short 5'UTR (TISU), respectively. Consistent with that, shortening the 5'UTR from 16 to 10 nt diminished Kozak and enhanced TISU-driven translation. As TISU is resistant and Kozak is sensitive to energy stress, we examined stress responses and found that the RPS26dC mutation confers resistance to glucose starvation and mTOR inhibition. Furthermore, the basal mTOR activity is reduced while AMP-activated protein kinase is activated in RPS26dC cells, mirroring energy-deprived wild-type (WT) cells. Likewise, the translatome of RPS26dC cells is correlated to glucose-starved WT cells. Our findings uncover the central roles of RPS26 C-terminal RNA binding in energy metabolism, in the translation of mRNAs bearing specific features and in the translation tolerance of TISU genes to energy stress.
Collapse
Affiliation(s)
- Tal Havkin-Solomon
- Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Davide Fraticelli
- Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Anat Bahat
- Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Daniel Hayat
- Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Nina Reuven
- Department of Molecular Genetics, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Yosef Shaul
- Department of Molecular Genetics, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Rivka Dikstein
- Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot 7610001, Israel
| |
Collapse
|
2
|
Slobodin B, Sehrawat U, Lev A, Hayat D, Zuckerman B, Fraticelli D, Ogran A, Ben-Shmuel A, Bar-David E, Levy H, Ulitsky I, Dikstein R. Cap-independent translation and a precisely located RNA sequence enable SARS-CoV-2 to control host translation and escape anti-viral response. Nucleic Acids Res 2022; 50:8080-8092. [PMID: 35849342 PMCID: PMC9371909 DOI: 10.1093/nar/gkac615] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 06/09/2022] [Accepted: 07/04/2022] [Indexed: 12/29/2022] Open
Abstract
Translation of SARS-CoV-2-encoded mRNAs by the host ribosomes is essential for its propagation. Following infection, the early expressed viral protein NSP1 binds the ribosome, represses translation, and induces mRNA degradation, while the host elicits an anti-viral response. The mechanisms enabling viral mRNAs to escape this multifaceted repression remain obscure. Here we show that expression of NSP1 leads to destabilization of multi-exon cellular mRNAs, while intron-less transcripts, such as viral mRNAs and anti-viral interferon genes, remain relatively stable. We identified a conserved and precisely located cap-proximal RNA element devoid of guanosines that confers resistance to NSP1-mediated translation inhibition. Importantly, the primary sequence rather than the secondary structure is critical for protection. We further show that the genomic 5'UTR of SARS-CoV-2 drives cap-independent translation and promotes expression of NSP1 in an eIF4E-independent and Torin1-resistant manner. Upon expression, NSP1 further enhances cap-independent translation. However, the sub-genomic 5'UTRs are highly sensitive to eIF4E availability, rendering viral propagation partially sensitive to Torin1. We conclude that the combined NSP1-mediated degradation of spliced mRNAs and translation inhibition of single-exon genes, along with the unique features present in the viral 5'UTRs, ensure robust expression of viral mRNAs. These features can be exploited as potential therapeutic targets.
Collapse
Affiliation(s)
- Boris Slobodin
- Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Urmila Sehrawat
- Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot 76100, Israel.,Department of Cancer Biology and Genetics, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Anastasia Lev
- Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Daniel Hayat
- Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Binyamin Zuckerman
- Department of Biological Regulation, The Weizmann Institute of Science, Rehovot 76100, Israel.,Gladstone/UCSF Center for Cell Circuitry, Gladstone Institutes, San Francisco, CA 94158, USA
| | - Davide Fraticelli
- Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Ariel Ogran
- Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Amir Ben-Shmuel
- Department of Infectious Diseases, Israel Institute for Biological Research, Ness-Ziona 7410001 Israel
| | - Elad Bar-David
- Department of Infectious Diseases, Israel Institute for Biological Research, Ness-Ziona 7410001 Israel
| | - Haim Levy
- Department of Infectious Diseases, Israel Institute for Biological Research, Ness-Ziona 7410001 Israel
| | - Igor Ulitsky
- Department of Biological Regulation, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Rivka Dikstein
- Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot 76100, Israel
| |
Collapse
|
3
|
Longo F, De Ritis D, Miluzio A, Fraticelli D, Baets J, Scarlato M, Santorelli FM, Biffo S, Maltecca F. Assessment of Sacsin Turnover in Patients With ARSACS: Implications for Molecular Diagnosis and Pathogenesis. Neurology 2021; 97:e2315-e2327. [PMID: 34649874 PMCID: PMC8665432 DOI: 10.1212/wnl.0000000000012962] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 10/07/2021] [Indexed: 11/15/2022] Open
Abstract
Background and Objectives Autosomal recessive spastic ataxia of Charlevoix-Saguenay (ARSACS) is caused by variations in SACS gene encoding sacsin, a huge multimodular protein of unknown function. More than 200 SACS variations have been described worldwide to date. Because ARSACS presents phenotypic variability, previous empirical studies attempted to correlate the nature and position of SACS variations with the age at onset or with disease severity, although not considering the effect of the various variations on protein stability. In this work, we studied genotype-phenotype correlation in ARSACS at a functional level. Methods We analyzed a large set of skin fibroblasts derived from patients with ARSACS, including both new and already published cases, carrying variations of different types affecting diverse domains of the protein. Results We found that sacsin is almost absent in patients with ARSACS, regardless of the nature of the variation. As expected, we did not detect sacsin in patients with truncating variations. We found it strikingly reduced or absent also in compound heterozygotes carrying diverse missense variations. In this case, we excluded SACS mRNA decay, defective translation, or faster posttranslational degradation as possible causes of protein reduction. Conversely, our results demonstrate that nascent mutant sacsin protein undergoes cotranslational ubiquitination and degradation. Discussion Our results provide a mechanistic explanation for the lack of genotype-phenotype correlation in ARSACS. We also propose a new and unambiguous criterion for ARSACS diagnosis that is based on the evaluation of sacsin level. Last, we identified preemptive degradation of a mutant protein as a novel cause of a human disease.
Collapse
Affiliation(s)
- Fabiana Longo
- Mitochondrial Dysfunctions in Neurodegeneration Unit, Ospedale San Raffaele, Milan, Italy
| | - Daniele De Ritis
- Mitochondrial Dysfunctions in Neurodegeneration Unit, Ospedale San Raffaele, Milan, Italy
| | - Annarita Miluzio
- Istituto Nazionale di Genetica Molecolare, INGM, "Romeo ed Enrica Invernizzi", Milan, Italy
| | - Davide Fraticelli
- Mitochondrial Dysfunctions in Neurodegeneration Unit, Ospedale San Raffaele, Milan, Italy
| | - Jonathan Baets
- Laboratory of Neuromuscular Pathology, Institute Born-Bunge, University of Antwerp, Antwerpen, Belgium.,Neuromuscular Reference Centre, Department of Neurology, Antwerp University Hospital, Antwerpen, Belgium
| | - Marina Scarlato
- Department of Neurology, Ospedale San Raffaele, Milan, Italy
| | | | - Stefano Biffo
- Istituto Nazionale di Genetica Molecolare, INGM, "Romeo ed Enrica Invernizzi", Milan, Italy.,Department of Biosciences, University of Milan, Milan, Italy
| | - Francesca Maltecca
- Mitochondrial Dysfunctions in Neurodegeneration Unit, Ospedale San Raffaele, Milan, Italy .,Università Vita-Salute San Raffaele, Milan, Italy
| |
Collapse
|
4
|
Scribante A, Sfondrini MF, Fraticelli D, Malfatto M, Gandini P. Adhesive systems for CAD-CAM customised lingual orthodontic brackets: which one is better? Eur J Paediatr Dent 2019; 18:188-192. [PMID: 29254341 DOI: 10.23804/ejpd.2017.18.03.04] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- A Scribante
- Unit of Orthodontics and Paediatric Dentistry, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Paediatric Sciences, University of Pavia, Pavia, Italy
| | - M F Sfondrini
- Unit of Orthodontics and Paediatric Dentistry, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Paediatric Sciences, University of Pavia, Pavia, Italy
| | - D Fraticelli
- Unit of Orthodontics and Paediatric Dentistry, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Paediatric Sciences, University of Pavia, Pavia, Italy
| | - M Malfatto
- Unit of Orthodontics and Paediatric Dentistry, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Paediatric Sciences, University of Pavia, Pavia, Italy
| | - P Gandini
- Unit of Orthodontics and Paediatric Dentistry, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Paediatric Sciences, University of Pavia, Pavia, Italy
| |
Collapse
|
5
|
Sfondrini M, Fraticelli D, Barbati M, Scribante A, Gandini P. Effetti di un nuovo preparato farmaceutico sulla guarigione di lesioni aftosiche in pazienti di età pediatrica. Dental Cadmos 2012. [DOI: 10.1016/j.cadmos.2011.11.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
6
|
Sfondrini M, Fraticelli D, Rossini F, Scribante A, Vitale M. Effetti della terapia laser a basso dosaggio nei movimenti dentali ortodontici: analisi della letteratura. Mondo Ortodontico 2011; 36:121-128. [DOI: 10.1016/j.mor.2010.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
|
7
|
Zaffe D, Fraticelli D, Sfondrini MF, Caielli D, Botticelli AR. Rabbit Bone Behavior after Orthodontic and Pulsed Low-Frequency Electromagnetic Field Treatments. ACTA ACUST UNITED AC 2009. [DOI: 10.3109/15368379809012890] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
8
|
Lucchese A, Fraticelli D, Sfondrini MF. [A longitudinal evaluation of the reliability of a growth forecast in a sample of an untreated population]. Minerva Stomatol 1997; 46:87-96. [PMID: 9173225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The aim of this study is to verify by a longitudinal study the reliability of growth forecast on a homogeneous Italian female sample. A cephalometric software was used and the result was enough reliable, especially in short term forecast. However, a constant tendency of the program to construct a forecast in hyperdivergency was found.
Collapse
Affiliation(s)
- A Lucchese
- Scuola di Specializzazione in Ortognatodonzia, Università degli Studi, Pavia
| | | | | |
Collapse
|
9
|
Fraticelli D, Collaseno V, Schiavi A. [Preformed metallic crowns in pedodontics]. Chir Dent Fr 1982; 52:69-71. [PMID: 7044711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
|
10
|
Fraticelli D, Collesano V, Schiavi A. [Preformed metallic crowns in pedodontics]. Dent Cadmos 1981; 49:55-7. [PMID: 7032998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
|
11
|
Bianchi S, Sfondrini G, Menghini P, Fraticelli D. [Sterilization and conservation of endodontic instruments]. Riv Ital Stomatol 1979; 48:31-8. [PMID: 292123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
12
|
Sfondrini G, Fraticelli D, Bianchi S, Resta G. [Composite materials in pedodontics]. Minerva Stomatol 1979; 28:15-22. [PMID: 157427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A brief account is given of the features of 1st and 2nd generation compounds and their clinical applications. Reference is made to many years of personal experience in an assessment of their long-term results.
Collapse
|
13
|
Sfondrini G, Bianchi S, Ghigini F, Fraticelli D. [Treatment of deep caries, accidental pulp exposure and pulpitis in deciduous teeth]. Riv Ital Stomatol 1978; 47:39-48. [PMID: 283505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
14
|
Sfondrini G, Bianchi S, Fraticelli D, Ghigini F. [Endodontic treatment of permanent teeth with open apices]. Riv Ital Stomatol 1978; 47:59-67. [PMID: 283508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
15
|
Sfondrini G, Bianchi S, Fraticelli D, Ghigini F. [Clinico-statistical study or the use of N2-NORMAL in pulpotomy in vital deciduous teeth]. Riv Ital Stomatol 1978; 47:56-8. [PMID: 283507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
16
|
Sfondrini G, Bianchi S, Fraticelli D, Ghigini F. [Endodontic therapy of necrotic or gangrenous deciduous teeth]. Riv Ital Stomatol 1978; 47:49-55. [PMID: 283506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|