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Chabronova A, Holmes TL, Hoang DM, Denning C, James V, Smith JGW, Peffers MJ. SnoRNAs in cardiovascular development, function, and disease. Trends Mol Med 2024; 30:562-578. [PMID: 38523014 DOI: 10.1016/j.molmed.2024.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 03/07/2024] [Accepted: 03/08/2024] [Indexed: 03/26/2024]
Abstract
Small nucleolar RNAs (snoRNAs) are emerging as important regulators of cardiovascular (patho)biology. Several roles of snoRNAs have recently been identified in heart development and congenital heart diseases, as well as their dynamic regulation in hypertrophic and dilated cardiomyopathies, coronary heart disease (CHD), myocardial infarction (MI), cardiac fibrosis, and heart failure. Furthermore, reports of changes in vesicular snoRNA expression and altered levels of circulating snoRNAs in response to cardiac stress suggest that snoRNAs also function in cardiac signaling and intercellular communication. In this review, we summarize and discuss key findings and outline the clinical potential of snoRNAs considering current challenges and gaps in the field of cardiovascular diseases (CVDs).
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Affiliation(s)
- Alzbeta Chabronova
- Department of Musculoskeletal Ageing Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, L7 8TX, UK.
| | - Terri L Holmes
- Centre for Metabolic Health, Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich, NR4 7UQ, UK
| | - Duc M Hoang
- Department of Stem Cell Biology, Biodiscovery Institute, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Chris Denning
- Department of Stem Cell Biology, Biodiscovery Institute, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Victoria James
- School of Veterinary Medicine and Science, Biodiscovery Institute, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - James G W Smith
- Centre for Metabolic Health, Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich, NR4 7UQ, UK
| | - Mandy J Peffers
- Department of Musculoskeletal Ageing Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, L7 8TX, UK
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2
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't Hart LM, de Klerk JA, Bouland GA, Peerlings JHD, Blom MT, Cramer SJ, Bijkerk R, Beulens JWJ, Slieker RC. Small RNA sequencing reveals snoRNAs and piRNA-019825 as novel players in diabetic kidney disease. Endocrine 2024:10.1007/s12020-024-03884-3. [PMID: 38801599 DOI: 10.1007/s12020-024-03884-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 05/16/2024] [Indexed: 05/29/2024]
Abstract
INTRODUCTION Micro- and macrovascular complications are common among persons with type 2 diabetes. Recently there has been growing interest to investigate the potential of circulating small non-coding RNAs (sncRNAs) as contributors to the development of diabetic complications. In this study we investigate to what extent circulating sncRNAs levels associate with prevalent diabetic kidney disease (DKD) in persons with type 2 diabetes. METHODS Plasma sncRNAs levels were determined using small RNA-seq, allowing detection of miRNAs, snoRNAs, piRNAs, tRNA fragments, and various other sncRNA classes. We tested for differentially expressed sncRNAs in persons with type 2 diabetes, with DKD (n = 69) or without DKD (n = 405). In secondary analyses, we also tested the association with eGFR, albuminuria (UACR), and the plasma proteome. RESULTS In total seven sncRNAs were negatively associated with prevalent DKD (all PFDR ≤ 0.05). Including one microRNA (miR-143-5p), five snoRNAs (U8, SNORD118, SNORD24, SNORD107, SNORD87) and a piRNA (piR-019825 | DQ597218). Proteomic analyses showed that the seven sncRNAs, and especially the piRNA piR-019825, were associated with plasma levels of 24 proteins of which several have known associations with kidney function including TNF sR-I (TNFRFS1A), DAN (NBL1) and cystatin C (CST3). CONCLUSION We have identified novel small non-coding RNAs, primarily from classes other than microRNAs, that are associated with diabetic kidney disease. Our results show that the involvement of small non-coding RNAs in DKD goes beyond the already known microRNAs and also involves other classes of sncRNA, in particular snoRNAs and the piRNA piR-019825, that have never been studied before in relation to kidney function.
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Affiliation(s)
- L M 't Hart
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, The Netherlands.
- Department of Epidemiology and Data Sciences, Amsterdam University Medical Center, Location Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.
- Health Behaviors & Chronic Diseases Research Program & Personalised Medicine Research Program, Amsterdam Public Health, Amsterdam, The Netherlands.
- Department of Biomedical Data Sciences, Section Molecular Epidemiology, Leiden University Medical Center, Leiden, The Netherlands.
| | - J A de Klerk
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, The Netherlands
- Department of Internal Medicine, Division of Nephrology, Leiden University Medical Center, Leiden, The Netherlands
- Einthoven Laboratory for Vascular and Regenerative Medicine, Leiden University Medical Center, Leiden, The Netherlands
| | - G A Bouland
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, The Netherlands
| | - J H D Peerlings
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, The Netherlands
| | - M T Blom
- Health Behaviors & Chronic Diseases Research Program & Personalised Medicine Research Program, Amsterdam Public Health, Amsterdam, The Netherlands
- Department of General Practice, Amsterdam University Medical Center, Location Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - S J Cramer
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, The Netherlands
| | - R Bijkerk
- Department of Internal Medicine, Division of Nephrology, Leiden University Medical Center, Leiden, The Netherlands
- Einthoven Laboratory for Vascular and Regenerative Medicine, Leiden University Medical Center, Leiden, The Netherlands
| | - J W J Beulens
- Department of Epidemiology and Data Sciences, Amsterdam University Medical Center, Location Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
- Health Behaviors & Chronic Diseases Research Program & Personalised Medicine Research Program, Amsterdam Public Health, Amsterdam, The Netherlands
| | - R C Slieker
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, The Netherlands
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Grützmann K, Salomo K, Krüger A, Lohse-Fischer A, Erdmann K, Seifert M, Baretton G, Aust D, William D, Schröck E, Thomas C, Füssel S. Identification of novel snoRNA-based biomarkers for clear cell renal cell carcinoma from urine-derived extracellular vesicles. Biol Direct 2024; 19:38. [PMID: 38741178 DOI: 10.1186/s13062-024-00467-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 03/18/2024] [Indexed: 05/16/2024] Open
Abstract
BACKGROUND Clear cell renal cell carcinoma (ccRCC) is the most common subtype of RCC with high rates of metastasis. Targeted therapies such as tyrosine kinase and checkpoint inhibitors have improved treatment success, but therapy-related side effects and tumor recurrence remain a challenge. As a result, ccRCC still have a high mortality rate. Early detection before metastasis has great potential to improve outcomes, but no suitable biomarker specific for ccRCC is available so far. Therefore, molecular biomarkers derived from body fluids have been investigated over the past decade. Among them, RNAs from urine-derived extracellular vesicles (EVs) are very promising. METHODS RNA was extracted from urine-derived EVs from a cohort of 78 subjects (54 ccRCC patients, 24 urolithiasis controls). RNA-seq was performed on the discovery cohort, a subset of the whole cohort (47 ccRCC, 16 urolithiasis). Reads were then mapped to the genome, and expression was quantified based on 100 nt long contiguous genomic regions. Cluster analysis and differential region expression analysis were performed with adjustment for age and gender. The candidate biomarkers were validated by qPCR in the entire cohort. Receiver operating characteristic, area under the curve and odds ratios were used to evaluate the diagnostic potential of the models. RESULTS An initial cluster analysis of RNA-seq expression data showed separation by the subjects' gender, but not by tumor status. Therefore, the following analyses were done, adjusting for gender and age. The regions differentially expressed between ccRCC and urolithiasis patients mainly overlapped with small nucleolar RNAs (snoRNAs). The differential expression of four snoRNAs (SNORD99, SNORD22, SNORD26, SNORA50C) was validated by quantitative PCR. Confounder-adjusted regression models were then used to classify the validation cohort into ccRCC and tumor-free subjects. Corresponding accuracies ranged from 0.654 to 0.744. Models combining multiple genes and the risk factors obesity and hypertension showed improved diagnostic performance with an accuracy of up to 0.811 for SNORD99 and SNORA50C (p = 0.0091). CONCLUSIONS Our study uncovered four previously unrecognized snoRNA biomarkers from urine-derived EVs, advancing the search for a robust, easy-to-use ccRCC screening method.
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Affiliation(s)
- Konrad Grützmann
- Core Unit for Molecular Tumor Diagnostics (CMTD), National Center for Tumor Diseases Dresden (NCT/UCC), 01307, Dresden, Germany
- German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
- German Cancer Consortium (DKTK), 69120, Heidelberg, Germany
- Institute for Medical Informatics and Biometry, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, 01307, Dresden, Germany
| | - Karsten Salomo
- Department of Urology, Faculty of Medicine Carl Gustav Carus, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307, Dresden, Germany
| | - Alexander Krüger
- Core Unit for Molecular Tumor Diagnostics (CMTD), National Center for Tumor Diseases Dresden (NCT/UCC), 01307, Dresden, Germany
- German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
- German Cancer Consortium (DKTK), 69120, Heidelberg, Germany
| | - Andrea Lohse-Fischer
- Department of Urology, Faculty of Medicine Carl Gustav Carus, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307, Dresden, Germany
| | - Kati Erdmann
- German Cancer Consortium (DKTK), 69120, Heidelberg, Germany
- Department of Urology, Faculty of Medicine Carl Gustav Carus, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307, Dresden, Germany
| | - Michael Seifert
- Institute for Medical Informatics and Biometry, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, 01307, Dresden, Germany
| | - Gustavo Baretton
- Core Unit for Molecular Tumor Diagnostics (CMTD), National Center for Tumor Diseases Dresden (NCT/UCC), 01307, Dresden, Germany
- German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
- German Cancer Consortium (DKTK), 69120, Heidelberg, Germany
- Institute for Pathology, Faculty of Medicine Carl Gustav Carus, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307, Dresden, Germany
| | - Daniela Aust
- Core Unit for Molecular Tumor Diagnostics (CMTD), National Center for Tumor Diseases Dresden (NCT/UCC), 01307, Dresden, Germany
- German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
- German Cancer Consortium (DKTK), 69120, Heidelberg, Germany
- Institute for Pathology, Faculty of Medicine Carl Gustav Carus, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307, Dresden, Germany
| | - Doreen William
- Core Unit for Molecular Tumor Diagnostics (CMTD), National Center for Tumor Diseases Dresden (NCT/UCC), 01307, Dresden, Germany
- German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
- German Cancer Consortium (DKTK), 69120, Heidelberg, Germany
- Institute for Clinical Genetics, Faculty of Medicine Carl Gustav Carus, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307, Dresden, Germany
- Institute of Molecular Cell Biology and Genetics, ERN GENTURIS, Hereditary Cancer Syndrome Center Dresden, Max Planck, 01307, Dresden, Germany
| | - Evelin Schröck
- Core Unit for Molecular Tumor Diagnostics (CMTD), National Center for Tumor Diseases Dresden (NCT/UCC), 01307, Dresden, Germany
- German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
- German Cancer Consortium (DKTK), 69120, Heidelberg, Germany
- Institute for Clinical Genetics, Faculty of Medicine Carl Gustav Carus, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307, Dresden, Germany
- Institute of Molecular Cell Biology and Genetics, ERN GENTURIS, Hereditary Cancer Syndrome Center Dresden, Max Planck, 01307, Dresden, Germany
| | - Christian Thomas
- German Cancer Consortium (DKTK), 69120, Heidelberg, Germany
- Department of Urology, Faculty of Medicine Carl Gustav Carus, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307, Dresden, Germany
| | - Susanne Füssel
- German Cancer Consortium (DKTK), 69120, Heidelberg, Germany.
- Department of Urology, Faculty of Medicine Carl Gustav Carus, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307, Dresden, Germany.
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Zhou KI, Pecot CV, Holley CL. 2'- O-methylation (Nm) in RNA: progress, challenges, and future directions. RNA (NEW YORK, N.Y.) 2024; 30:570-582. [PMID: 38531653 PMCID: PMC11019748 DOI: 10.1261/rna.079970.124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 02/09/2024] [Indexed: 03/28/2024]
Abstract
RNA 2'-O-methylation (Nm) is highly abundant in noncoding RNAs including ribosomal RNA (rRNA), transfer RNA (tRNA), and small nuclear RNA (snRNA), and occurs in the 5' cap of virtually all messenger RNAs (mRNAs) in higher eukaryotes. More recently, Nm has also been reported to occur at internal sites in mRNA. High-throughput methods have been developed for the transcriptome-wide detection of Nm. However, these methods have mostly been applied to abundant RNAs such as rRNA, and the validity of the internal mRNA Nm sites detected with these approaches remains controversial. Nonetheless, Nm in both coding and noncoding RNAs has been demonstrated to impact cellular processes, including translation and splicing. In addition, Nm modifications at the 5' cap and possibly at internal sites in mRNA serve to prevent the binding of nucleic acid sensors, thus preventing the activation of the innate immune response by self-mRNAs. Finally, Nm has been implicated in a variety of diseases including cancer, cardiovascular diseases, and neurologic syndromes. In this review, we discuss current challenges in determining the distribution, regulation, function, and disease relevance of Nm, as well as potential future directions for the field.
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Affiliation(s)
- Katherine I Zhou
- Division of Medical Oncology, Department of Medicine, Duke University, Durham, North Carolina 27710, USA
| | - Chad V Pecot
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
- Division of Hematology and Oncology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27514, USA
- University of North Carolina RNA Discovery Center, UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Christopher L Holley
- Division of Cardiology, Department of Medicine, Duke University, Durham, North Carolina 27710, USA
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Yang X, Li M, Wang H, Wang M, Liu Y, Xu W, Jiang T. SNORD45A Affects Content of HIF-1α and Promotes Endothelial Angiogenic Function. Appl Biochem Biotechnol 2024:10.1007/s12010-024-04916-4. [PMID: 38489114 DOI: 10.1007/s12010-024-04916-4] [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] [Accepted: 03/04/2024] [Indexed: 03/17/2024]
Abstract
To find out the differentially expressed small nucleolar RNAs (snoRNAs) in corneal neovascularization and their effect on angiogenesis. The rat model of corneal neovascularization induced by alkali burn was established, and the differentially expressed snoRNAs were sifted by high-throughput sequencing. Human genome homologs were screened and verified in cytopathological models. Polymerase chain reactions (PCRs) and Western blot assays were applied to detect mRNA and corresponding proteins affected by the differentially expressed snoRNA. In vitro, experiments were promoted to identify whether snoRNA affects endothelial cell migration and angiogenesis. Forty-seven differentially expressed snoRNAs were sifted from transparent cornea and neovascularization. According to sequencing and cytopathological model results, SNORD45A was selected for subsequent experiments. At mRNA and protein levels, SNORD45A affected the expression of HIF-1α. SNORD45A promoted endothelial angiogenesis through endothelial cell migration and tube formation regulation. The research suggested that SNORD45A partakes in the corneal neovascularization formation and can become one of the targets for corneal neovascularization therapy.
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Affiliation(s)
- Xi Yang
- The Affiliated Hospital, Qingdao University, No. 16, Jiangsu Road, Qingdao, 266003, Shandong province, China
| | - Meng Li
- The Medical Faculty, Qingdao University, No. 308, Ningxia Road, Qingdao, 266071, Shandong province, China
| | - Hongqiao Wang
- Department of Blood Purification, Hiser Medical Center of Qingdao, No.4, Renmin Road, Qingdao, 266034, Shandong province, China
| | - Mengyuan Wang
- The Medical Faculty, Qingdao University, No. 308, Ningxia Road, Qingdao, 266071, Shandong province, China
| | - Yiming Liu
- The Medical Faculty, Qingdao University, No. 308, Ningxia Road, Qingdao, 266071, Shandong province, China
| | - Wenhua Xu
- The Affiliated Hospital, Qingdao University, No. 16, Jiangsu Road, Qingdao, 266003, Shandong province, China.
- Institute of Regenerative Medicine and Laboratory Innovation, Qingdao University, No. 308, Ningxia Road, Qingdao, 266071, Shandong province, China.
| | - Tao Jiang
- The Affiliated Hospital, Qingdao University, No. 16, Jiangsu Road, Qingdao, 266003, Shandong province, China.
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Jagielski NP, Rai AK, Rajan KS, Mangal V, Garikipati VNS. A contemporary review of snoRNAs in cardiovascular health: RNA modification and beyond. MOLECULAR THERAPY. NUCLEIC ACIDS 2024; 35:102087. [PMID: 38178918 PMCID: PMC10765057 DOI: 10.1016/j.omtn.2023.102087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
As cardiovascular diseases continue to be the leading cause of death worldwide, groundbreaking research is being conducted to mitigate their effects. This review looks into the potential of small nucleolar RNAs (snoRNAs) and the opportunity to use these molecular agents as therapeutic biomarkers for cardiovascular issues specific to the heart. Through an investigation of snoRNA biogenesis, functionality, and roles in cardiovascular diseases, this review relates our past and present knowledge of snoRNAs to the current scientific literature. Considering the initial discovery of snoRNAs and the studies thereafter analyzing the roles of snoRNAs in disease, we look forward to uncovering many other noncanonical functions that could lead researchers closer to finding preventive and curative solutions for cardiovascular diseases.
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Affiliation(s)
- Noah Peter Jagielski
- Aging + Cardiovascular Discovery Center, Department of Cardiovascular Sciences, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA
| | - Amit Kumar Rai
- Aging + Cardiovascular Discovery Center, Department of Cardiovascular Sciences, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA
| | - K. Shanmugha Rajan
- Department of Chemical and Structural Biology, Weizmann Institute, Rehovot 76100 001, Israel
| | - Vatsal Mangal
- Aging + Cardiovascular Discovery Center, Department of Cardiovascular Sciences, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA
| | - Venkata Naga Srikanth Garikipati
- Aging + Cardiovascular Discovery Center, Department of Cardiovascular Sciences, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA
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Sierra C, Sabariego-Navarro M, Fernández-Blanco Á, Cruciani S, Zamora-Moratalla A, Novoa EM, Dierssen M. The lncRNA Snhg11, a new candidate contributing to neurogenesis, plasticity, and memory deficits in Down syndrome. Mol Psychiatry 2024:10.1038/s41380-024-02440-9. [PMID: 38409595 DOI: 10.1038/s41380-024-02440-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 01/16/2024] [Accepted: 01/17/2024] [Indexed: 02/28/2024]
Abstract
Down syndrome (DS) stands as the prevalent genetic cause of intellectual disability, yet comprehensive understanding of its cellular and molecular underpinnings remains limited. In this study, we explore the cellular landscape of the hippocampus in a DS mouse model, the Ts65Dn, through single-nuclei transcriptional profiling. Our findings demonstrate that trisomy manifests as a highly specific modification of the transcriptome within distinct cell types. Remarkably, we observed a significant shift in the transcriptomic profile of granule cells in the dentate gyrus (DG) associated with trisomy. We identified the downregulation of a specific small nucleolar RNA host gene, Snhg11, as the primary driver behind this observed shift in the trisomic DG. Notably, reduced levels of Snhg11 in this region were also observed in a distinct DS mouse model, the Dp(16)1Yey, as well as in human postmortem brain tissue, indicating its relevance in Down syndrome. To elucidate the function of this long non-coding RNA (lncRNA), we knocked down Snhg11 in the DG of wild-type mice. Intriguingly, this intervention alone was sufficient to impair synaptic plasticity and adult neurogenesis, resembling the cognitive phenotypes associated with trisomy in the hippocampus. Our study uncovers the functional role of Snhg11 in the DG and underscores the significance of this lncRNA in intellectual disability. Furthermore, our findings highlight the importance of DG in the memory deficits observed in Down syndrome.
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Affiliation(s)
- Cesar Sierra
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr. Aiguader 88, Barcelona, 08003, Spain.
| | - Miguel Sabariego-Navarro
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr. Aiguader 88, Barcelona, 08003, Spain
- Universitat Pompeu Fabra (UPF), Dr Aiguader 88, Barcelona, 08003, Spain
| | - Álvaro Fernández-Blanco
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr. Aiguader 88, Barcelona, 08003, Spain
| | - Sonia Cruciani
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr. Aiguader 88, Barcelona, 08003, Spain
- Universitat Pompeu Fabra (UPF), Dr Aiguader 88, Barcelona, 08003, Spain
| | - Alfonsa Zamora-Moratalla
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr. Aiguader 88, Barcelona, 08003, Spain
| | - Eva Maria Novoa
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr. Aiguader 88, Barcelona, 08003, Spain
- Universitat Pompeu Fabra (UPF), Dr Aiguader 88, Barcelona, 08003, Spain
| | - Mara Dierssen
- Universitat Pompeu Fabra (UPF), Dr Aiguader 88, Barcelona, 08003, Spain.
- Biomedical Research Networking Center for Rare Diseases (CIBERER), Barcelona, Spain.
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Fafard-Couture É, Labialle S, Scott MS. The regulatory roles of small nucleolar RNAs within their host locus. RNA Biol 2024; 21:1-11. [PMID: 38626213 PMCID: PMC11028025 DOI: 10.1080/15476286.2024.2342685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/08/2024] [Indexed: 04/18/2024] Open
Abstract
Small nucleolar RNAs (snoRNAs) are a class of conserved noncoding RNAs forming complexes with proteins to catalyse site-specific modifications on ribosomal RNA. Besides this canonical role, several snoRNAs are now known to regulate diverse levels of gene expression. While these functions are carried out in trans by mature snoRNAs, evidence has also been emerging of regulatory roles of snoRNAs in cis, either within their genomic locus or as longer transcription intermediates during their maturation. Herein, we review recent findings that snoRNAs can interact in cis with their intron to regulate the expression of their host gene. We also explore the ever-growing diversity of longer host-derived snoRNA extensions and their functional impact across the transcriptome. Finally, we discuss the role of snoRNA duplications into forging these new layers of snoRNA-mediated regulation, as well as their involvement in the genomic imprinting of their host locus.
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Affiliation(s)
- Étienne Fafard-Couture
- Département de biochimie et de génomique fonctionnelle, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | | | - Michelle S Scott
- Département de biochimie et de génomique fonctionnelle, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec, Canada
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Matveeva A, Vinogradov D, Zhuravlev E, Semenov D, Vlassov V, Stepanov G. Intron Editing Reveals SNORD-Dependent Maturation of the Small Nucleolar RNA Host Gene GAS5 in Human Cells. Int J Mol Sci 2023; 24:17621. [PMID: 38139448 PMCID: PMC10743478 DOI: 10.3390/ijms242417621] [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: 10/31/2023] [Revised: 12/13/2023] [Accepted: 12/15/2023] [Indexed: 12/24/2023] Open
Abstract
The GAS5 gene encodes a long non-coding RNA (lncRNA) and intron-located small nucleolar RNAs (snoRNAs). Its structure, splice variants, and diverse functions in mammalian cells have been thoroughly investigated. However, there are still no data on a successful knockout of GAS5 in human cells, with most of the loss-of-function experiments utilizing standard techniques to produce knockdowns. By using CRISPR/Cas9 to introduce double-strand breaks in the terminal intronic box C/D snoRNA genes (SNORDs), we created monoclonal cell lines carrying continuous deletions in one of the GAS5 alleles. The levels of GAS5-encoded box C/D snoRNAs and lncRNA GAS5 were assessed, and the formation of the novel splice variants was analyzed. To comprehensively evaluate the influence of specific SNORD mutations, human cell lines with individual mutations in SNORD74 and SNORD81 were obtained. Specific mutations in SNORD74 led to the downregulation of all GAS5-encoded SNORDs and GAS5 lncRNA. Further analysis revealed that SNORD74 contains a specific regulatory element modulating the maturation of the GAS5 precursor transcript. The results demonstrate that the maturation of GAS5 occurs through the m6A-associated pathway in a SNORD-dependent manner, which is a quite intriguing epitranscriptomic mechanism.
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Affiliation(s)
| | | | | | | | | | - Grigory Stepanov
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia; (A.M.); (D.V.); (E.Z.); (D.S.)
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Sun X, Wang G, Luo W, Gu H, Ma W, Wei X, Liu D, Jia S, Cao S, Wang Y, Yuan Z. Small but strong: the emerging role of small nucleolar RNA in cardiovascular diseases. Front Cell Dev Biol 2023; 11:1292925. [PMID: 38033868 PMCID: PMC10682241 DOI: 10.3389/fcell.2023.1292925] [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: 09/12/2023] [Accepted: 10/30/2023] [Indexed: 12/02/2023] Open
Abstract
Cardiovascular diseases (CVDs) are the leading cause of mortality and disability worldwide. Numerous studies have demonstrated that non-coding RNAs (ncRNAs) play a primary role in CVD development. Therefore, studies on the mechanisms of ncRNAs are essential for further efforts to prevent and treat CVDs. Small nucleolar RNAs (snoRNAs) are a novel species of non-conventional ncRNAs that guide post-transcriptional modifications and the subsequent maturation of small nuclear RNA and ribosomal RNA. Evidently, snoRNAs are extensively expressed in human tissues and may regulate different illnesses. Particularly, as the next-generation sequencing techniques have progressed, snoRNAs have been shown to be differentially expressed in CVDs, suggesting that they may play a role in the occurrence and progression of cardiac illnesses. However, the molecular processes and signaling pathways underlying the function of snoRNAs remain unidentified. Therefore, it is of great value to comprehensively investigate the association between snoRNAs and CVDs. The aim of this review was to collate existing literature on the biogenesis, characteristics, and potential regulatory mechanisms of snoRNAs. In particular, we present a scientific update on these snoRNAs and their relevance to CVDs in an effort to cast new light on the functions of snoRNAs in the clinical diagnosis of CVDs.
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Affiliation(s)
- Xue Sun
- Department of Ultrasound, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
- Key Laboratory of Health Ministry for Congenital Malformation, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Gebang Wang
- Department of Thoracic Surgery, Liaoning Cancer Hospital and Institute, Cancer Hospital of Dalian University of Technology, Shenyang, Liaoning, China
| | - Wenting Luo
- Key Laboratory of Health Ministry for Congenital Malformation, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Hui Gu
- Key Laboratory of Health Ministry for Congenital Malformation, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Wei Ma
- Key Laboratory of Health Ministry for Congenital Malformation, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Xiaowei Wei
- Key Laboratory of Health Ministry for Congenital Malformation, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Dan Liu
- Key Laboratory of Health Ministry for Congenital Malformation, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Shanshan Jia
- Key Laboratory of Health Ministry for Congenital Malformation, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Songying Cao
- Key Laboratory of Health Ministry for Congenital Malformation, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yu Wang
- Department of Ultrasound, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Zhengwei Yuan
- Key Laboratory of Health Ministry for Congenital Malformation, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
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Sierra C, Sabariego-Navarro M, Fernández-Blanco Á, Cruciani S, Zamora-Moratalla A, Novoa EM, Dierssen M. The lncRNA Snhg11, a new candidate contributing to neurogenesis, plasticity and memory deficits in Down syndrome. RESEARCH SQUARE 2023:rs.3.rs-3184329. [PMID: 37841843 PMCID: PMC10571621 DOI: 10.21203/rs.3.rs-3184329/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2023]
Abstract
Down syndrome (DS) stands as the prevalent genetic cause of intellectual disability, yet comprehensive understanding of its cellular and molecular underpinnings remains limited. In this study, we explore the cellular landscape of the hippocampus in a DS mouse model through single-nuclei transcriptional profiling. Our findings demonstrate that trisomy manifests as a highly specific modification of the transcriptome within distinct cell types. Remarkably, we observed a significant shift in the transcriptomic profile of granule cells in the dentate gyrus (DG) associated with trisomy. We identified the downregulation of a specific small nucleolar RNA host gene, Snhg11, as the primary driver behind this observed shift in the trisomic DG. Notably, reduced levels of Snhg11 in this region were also observed in a distinct DS mouse model, the Dp(16)1Yey, as well as in human postmortem tissue, indicating its relevance in Down syndrome. To elucidate the function of this long non-coding RNA (lncRNA), we knocked down Snhg11 in the DG of wild-type mice. Intriguingly, this intervention alone was sufficient to impair synaptic plasticity and adult neurogenesis, resembling the cognitive phenotypes associated with trisomy in the hippocampus. Our study uncovers the functional role of Snhg11 in the DG and underscores the significance of this lncRNA in intellectual disability. Furthermore, our findings highlight the importance of the DG in the memory deficits observed in Down syndrome.
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Affiliation(s)
- Cesar Sierra
- Center for Genomic Regulation, The Barcelona Institute for Science and Technology, 08003 Barcelona, Spain
| | - Miguel Sabariego-Navarro
- Center for Genomic Regulation, The Barcelona Institute for Science and Technology, 08003 Barcelona, Spain
| | - Álvaro Fernández-Blanco
- Center for Genomic Regulation, The Barcelona Institute for Science and Technology, 08003 Barcelona, Spain
| | - Sonia Cruciani
- Center for Genomic Regulation, The Barcelona Institute for Science and Technology, 08003 Barcelona, Spain
| | - Alfonsa Zamora-Moratalla
- Center for Genomic Regulation, The Barcelona Institute for Science and Technology, 08003 Barcelona, Spain
| | - Eva Maria Novoa
- Center for Genomic Regulation, The Barcelona Institute for Science and Technology, 08003 Barcelona, Spain
- Department of Experimental and Health Sciences, University Pompeu Fabra, 08003 Barcelona, Spain
| | - Mara Dierssen
- Center for Genomic Regulation, The Barcelona Institute for Science and Technology, 08003 Barcelona, Spain
- Department of Experimental and Health Sciences, University Pompeu Fabra, 08003 Barcelona, Spain
- Biomedical Research Networking Center for Rare Diseases (CIBERER), 08003 Barcelona, Spain
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12
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Saito R, Otsu M, Kiyosawa H, Kawai G. Expression analysis of box C/D snoRNAs with SNPs between C57BL/6 and MSM/Ms strains in male mouse. PLoS One 2023; 18:e0288362. [PMID: 37428787 DOI: 10.1371/journal.pone.0288362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 06/24/2023] [Indexed: 07/12/2023] Open
Abstract
MSM/Ms mouse derived from the Japanese wild mouse has unique characteristics compared to the widely used C57BL/6 mouse. To examine the usefulness of the MSM/Ms mouse for the comparative genomic analysis, expression of small RNAs were analyzed by the large-scale sequence analysis for two strains of mouse, C57BL/6 and MSM/Ms. As a trial, expression of box C/D snoRNAs, which are the most abundant small RNAs in the cell, were analyzed. By the comparison of the read number for each fragment, 11 snoRNAs with single nucleotide polymorphisms (SNPs) were detected. One of the snoRNAs, SNORD53, shows the expression only for MSM/Ms and this snoRNA has a mutation in the box sequence in C57BL/6. Thus, it was demonstrated that the proposed experimental system using SNPs can give new insight for the gene expression regulation.
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Affiliation(s)
- Rumiko Saito
- Department of Life Science, Faculty of Advanced Engineering, Chiba Institute of Technology, Narashino, Chiba, Japan
| | - Maina Otsu
- Department of Life Science, Faculty of Advanced Engineering, Chiba Institute of Technology, Narashino, Chiba, Japan
| | - Hidenori Kiyosawa
- Department of Life Science, Faculty of Advanced Engineering, Chiba Institute of Technology, Narashino, Chiba, Japan
- Department of Environmental Medicine, Kochi Medical School, Kochi University, Oko-cho, Nankoku, Kochi, Japan
| | - Gota Kawai
- Department of Life Science, Faculty of Advanced Engineering, Chiba Institute of Technology, Narashino, Chiba, Japan
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13
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Bergeron D, Faucher-Giguère L, Emmerichs AK, Choquet K, Song KS, Deschamps-Francoeur G, Fafard-Couture É, Rivera A, Couture S, Churchman LS, Heyd F, Abou Elela S, Scott MS. Intronic small nucleolar RNAs regulate host gene splicing through base pairing with their adjacent intronic sequences. Genome Biol 2023; 24:160. [PMID: 37415181 PMCID: PMC10324135 DOI: 10.1186/s13059-023-03002-y] [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: 10/25/2022] [Accepted: 06/29/2023] [Indexed: 07/08/2023] Open
Abstract
BACKGROUND Small nucleolar RNAs (snoRNAs) are abundant noncoding RNAs best known for their involvement in ribosomal RNA maturation. In mammals, most expressed snoRNAs are embedded in introns of longer genes and produced through transcription and splicing of their host. Intronic snoRNAs were long viewed as inert passengers with little effect on host expression. However, a recent study reported a snoRNA influencing the splicing and ultimate output of its host gene. Overall, the general contribution of intronic snoRNAs to host expression remains unclear. RESULTS Computational analysis of large-scale human RNA-RNA interaction datasets indicates that 30% of detected snoRNAs interact with their host transcripts. Many snoRNA-host duplexes are located near alternatively spliced exons and display high sequence conservation suggesting a possible role in splicing regulation. The study of the model SNORD2-EIF4A2 duplex indicates that the snoRNA interaction with the host intronic sequence conceals the branch point leading to decreased inclusion of the adjacent alternative exon. Extended SNORD2 sequence containing the interacting intronic region accumulates in sequencing datasets in a cell-type-specific manner. Antisense oligonucleotides and mutations that disrupt the formation of the snoRNA-intron structure promote the splicing of the alternative exon, shifting the EIF4A2 transcript ratio away from nonsense-mediated decay. CONCLUSIONS Many snoRNAs form RNA duplexes near alternative exons of their host transcripts, placing them in optimal positions to control host output as shown for the SNORD2-EIF4A2 model system. Overall, our study supports a more widespread role for intronic snoRNAs in the regulation of their host transcript maturation.
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Affiliation(s)
- Danny Bergeron
- Département de Biochimie Et Génomique Fonctionnelle, Faculté de Médecine Et Des Sciences de La Santé, Université de Sherbrooke, Sherbrooke, Québec, J1E 4K8, Canada
| | - Laurence Faucher-Giguère
- Département de Microbiologie Et d'infectiologie, Faculté de Médecine Et Des Sciences de La Santé, Université de Sherbrooke, Sherbrooke, Québec, J1E 4K8, Canada
| | - Ann-Kathrin Emmerichs
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Laboratory of RNA Biochemistry, Takustrasse 6, 14195, Berlin, Germany
| | - Karine Choquet
- Department of Genetics, Blavatnik Institute, Harvard Medical School, Boston, MA, 02115, USA
| | - Kristina Sungeun Song
- Département de Biochimie Et Génomique Fonctionnelle, Faculté de Médecine Et Des Sciences de La Santé, Université de Sherbrooke, Sherbrooke, Québec, J1E 4K8, Canada
| | - Gabrielle Deschamps-Francoeur
- Département de Biochimie Et Génomique Fonctionnelle, Faculté de Médecine Et Des Sciences de La Santé, Université de Sherbrooke, Sherbrooke, Québec, J1E 4K8, Canada
| | - Étienne Fafard-Couture
- Département de Biochimie Et Génomique Fonctionnelle, Faculté de Médecine Et Des Sciences de La Santé, Université de Sherbrooke, Sherbrooke, Québec, J1E 4K8, Canada
| | - Andrea Rivera
- Département de Microbiologie Et d'infectiologie, Faculté de Médecine Et Des Sciences de La Santé, Université de Sherbrooke, Sherbrooke, Québec, J1E 4K8, Canada
| | - Sonia Couture
- Département de Microbiologie Et d'infectiologie, Faculté de Médecine Et Des Sciences de La Santé, Université de Sherbrooke, Sherbrooke, Québec, J1E 4K8, Canada
| | - L Stirling Churchman
- Department of Genetics, Blavatnik Institute, Harvard Medical School, Boston, MA, 02115, USA
| | - Florian Heyd
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Laboratory of RNA Biochemistry, Takustrasse 6, 14195, Berlin, Germany
| | - Sherif Abou Elela
- Département de Microbiologie Et d'infectiologie, Faculté de Médecine Et Des Sciences de La Santé, Université de Sherbrooke, Sherbrooke, Québec, J1E 4K8, Canada
| | - Michelle S Scott
- Département de Biochimie Et Génomique Fonctionnelle, Faculté de Médecine Et Des Sciences de La Santé, Université de Sherbrooke, Sherbrooke, Québec, J1E 4K8, Canada.
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The emerging diagnostic and therapeutic roles of small nucleolar RNAs in lung diseases. Biomed Pharmacother 2023; 161:114519. [PMID: 36906975 DOI: 10.1016/j.biopha.2023.114519] [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: 02/25/2023] [Revised: 03/09/2023] [Accepted: 03/09/2023] [Indexed: 03/12/2023] Open
Abstract
Small nucleolar RNAs (snoRNAs) are non-coding RNA molecules that range from 60 to 300 nucleotides in length and are primarily located in the nucleoli of cells. They play a critical role in modifying ribosomal RNA and can also regulate alternative splicing and posttranscriptional modification of mRNA. Alterations in snoRNA expression can affect numerous cellular processes, including cell proliferation, apoptosis, angiogenesis, fibrosis, and inflammation, making them a promising target for diagnostics and treatment of various human pathologies. Recent evidence suggests that abnormal snoRNA expression is strongly associated with the development and progression of several lung diseases, such as lung cancer, asthma, chronic obstructive pulmonary disease, and pulmonary hypertension, as well as COVID-19. While few studies have shown a causal relationship between snoRNA expression and disease onset, this research field presents exciting opportunities for identifying new biomarkers and therapeutic targets in lung disease. This review discusses the emerging role and molecular mechanisms of snoRNAs in the pathogenesis of lung diseases, focusing on research opportunities, clinical studies, biomarkers, and therapeutic potential.
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Song J, Zheng A, Li S, Zhang W, Zhang M, Li X, Jin F, Ji Z. Clinical significance and prognostic value of small nucleolar RNA SNORA38 in breast cancer. Front Oncol 2022; 12:930024. [PMID: 36158687 PMCID: PMC9500313 DOI: 10.3389/fonc.2022.930024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 08/10/2022] [Indexed: 12/24/2022] Open
Abstract
BackgroundBreast cancer is the most common malignant tumor among women worldwide, and breast cancer stem cells (BCSCs) are believed to be the source of tumorigenesis. New findings suggest that small nucleolar RNAs (snoRNAs) play a significant role in tumor development.MethodsThe Cancer Genome Atlas (TCGA) and Kaplan–Meier survival analysis were used to demonstrate expression and survival of SNORA38 signature. In situ hybridization (ISH) and immunohistochemical (IHC) were conducted to analyze the correlation between SNORA38 and stemness biomarker in 77 BC samples. Gene Set Enrichment Analysis (GSEA) was performed to investigate the mechanisms related to SNORA38 expression in BC. Real-time qPCR was employed to evaluate the expression of SNORA38 in breast cancer cell lines.ResultsIn the public database and patients’ biopsies, SNORA38 was significantly up-regulated in breast cancer. Furthermore, the expression of SNORA38 was significantly correlated with tumor size, lymph node metastasis, and TNM stage, among which tumor size was an independent factor for SNORA38 expression. Higher SNORA38 expression was associated with shorter overall survival (OS). Meanwhile, SNORA38 was positively associated with the stem cell marker OCT-4, which suggested that SNORA38 might be related to breast cancer stemness.ConclusionsSNORA38 is an important carcinogenic snoRNA in breast cancer and might be a prognostic biomarker for breast cancer.
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Affiliation(s)
- Jian Song
- Department of Breast Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Ang Zheng
- Department of Breast Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Shan Li
- Department of Breast Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Wenrong Zhang
- Department of Breast Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Meilin Zhang
- Department of Breast Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Xingzhe Li
- Department of Ultrasound, The First Hospital of China Medical University, Shenyang, China
| | - Feng Jin
- Department of Breast Surgery, The First Hospital of China Medical University, Shenyang, China
- *Correspondence: Feng Jin, ; Ziyao Ji,
| | - Ziyao Ji
- Department of Ultrasound, The First Hospital of China Medical University, Shenyang, China
- *Correspondence: Feng Jin, ; Ziyao Ji,
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Li M, Huang F, Xie Z, Hong H, Xu Q, Peng Z. Identification of three small nucleolar RNAs (snoRNAs) as potential prognostic markers in diffuse large B-cell lymphoma. Cancer Med 2022; 12:3812-3829. [PMID: 36812125 PMCID: PMC9939161 DOI: 10.1002/cam4.5115] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 07/13/2022] [Accepted: 07/22/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Diffuse large B-cell lymphoma (DLBCL) is a non-Hodgkin lymphoma with high mortality rates. Small nucleolar RNAs (snoRNAs) are tumor-specific biological markers, but there are few studies on the role of snoRNAs in DLBCL. MATERIALS AND METHODS Survival-related snoRNAs were selected to construct a specific snoRNA-based signature via computational analyses (Cox regression and independent prognostic analyses) to predict the prognosis of DLBCL patients. To assist in clinical applications, a nomogram was built by combining the risk model and other independent prognostic factors. Pathway analysis, gene ontology analysis, transcription factor enrichment, protein-protein interactions, and single nucleotide variant analysis were used to explore the potential biological mechanisms of co-expressed genes. RESULTS Twelve prognosis-correlated snoRNAs were selected from the DLBCL patient cohort of microarray profiles, and a three-snoRNA signature consisting of SNORD1A, SNORA60, and SNORA66 was constructed. DLBCL patients could be divided into high-risk and low-risk cohorts using the risk model, and the high-risk group and activated B cell-like (ABC) type DLBCL were linked with disappointing survival. In addition, SNORD1A co-expressed genes were inseparably linked to the biological functions of the ribosome and mitochondria. Potential transcriptional regulatory networks have also been identified. MYC and RPL10A were the most mutated SNORD1A co-expressed genes in DLBCL. CONCLUSION Put together, our findings explored the potential biological effects of snoRNAs in DLBCL, and provided a new predictor for DLBCL prediction.
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Affiliation(s)
- Mei‐wei Li
- Department of Medical OncologyFirst Affiliated Hospital of Guangxi Medical UniversityNanningGuangxi Zhuang Autonomous RegionP. R. China
| | - Feng‐xiang Huang
- Department of Medical OncologyFirst Affiliated Hospital of Guangxi Medical UniversityNanningGuangxi Zhuang Autonomous RegionP. R. China
| | - Zu‐cheng Xie
- Department of Medical OncologyFirst Affiliated Hospital of Guangxi Medical UniversityNanningGuangxi Zhuang Autonomous RegionP. R. China
| | - Hao‐yuan Hong
- Department of Medical OncologyFirst Affiliated Hospital of Guangxi Medical UniversityNanningGuangxi Zhuang Autonomous RegionP. R. China
| | - Qing‐yuan Xu
- Department of Medical OncologyFirst Affiliated Hospital of Guangxi Medical UniversityNanningGuangxi Zhuang Autonomous RegionP. R. China
| | - Zhi‐gang Peng
- Department of Medical OncologyFirst Affiliated Hospital of Guangxi Medical UniversityNanningGuangxi Zhuang Autonomous RegionP. R. China
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Wu F, Zhang L, Wu P, Wu Y, Zhang T, Zhang D, Tian J. The Potential Role of Small Nucleolar RNAs in Cancers – An Evidence Map. Int J Gen Med 2022; 15:3851-3864. [PMID: 35431571 PMCID: PMC9005336 DOI: 10.2147/ijgm.s352333] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 03/29/2022] [Indexed: 12/11/2022] Open
Abstract
Purpose Cancer seriously endangers human health in every country of the world. New evidence shows that small nucleolar RNAs play important roles in tumorigenesis. Herein, we created this evidence map to systematically assess the impact of dysregulated snoRNAs on cancers. Methods We searched four databases to February 2022 using the keywords, “carcinoma”, “neoplasms”, “tumor”, “cancer”, “snoRNA”, and “small nucleolar rna”. The research data were independently screened by two reviewers. Bubble plot, mind map, heatmap were used to depict the relationship between snoRNAs and cancers. Results In total, 102 studies met the inclusion criteria and were analyzed in this evidence map. In this study, we found that dysregulated snoRNAs were statistically associated with the clinicopathological characteristics of cancer patients, and affected tumor cell phenotypes. Abnormally expressed snoRNAs were associated with poor survival in cancer patients. Current research confirmed that snoRNAs have good diagnostic efficiency for cancers. snoRNAs could modulate biological processes and signaling pathways of different cancer cells by altering rRNA, regulating mRNA, and recruiting protein factors. Conclusion Taken all together, ectopic snoRNAs may serve as new biomarkers for clinical assessment, diagnostic, prognostic prediction of cancer patients, and provide a potential therapeutic strategy for cancer treatment. This article provided a visual analysis of existing evidence on snoRNAs and cancers, which can offer useful information for different researchers interested in snoRNAs.
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Affiliation(s)
- Fanqi Wu
- Department of Respiratory, Lanzhou University Second Hospital, Lanzhou, Gansu Province, People’s Republic of China
| | - Longguo Zhang
- The Second Clinical Medical School, Lanzhou University, Lanzhou, Gansu Province, People’s Republic of China
| | - Pingfan Wu
- Department of Pathology, The 940th Hospital of the Joint Logistic Support of the People’s Liberation Army, Lanzhou, Gansu Province, People’s Republic of China
| | - Yi Wu
- The Second Clinical Medical School, Lanzhou University, Lanzhou, Gansu Province, People’s Republic of China
| | - Tao Zhang
- Department of Endocrinology and Metabolism, Lanzhou University Second Hospital, Lanzhou, Gansu Province, People’s Republic of China
| | - Dekui Zhang
- Department of Gastroenterology, Lanzhou University Second Hospital, Lanzhou, Gansu Province, People’s Republic of China
- Correspondence: Dekui Zhang; Jinhui Tian, Tel +86 139 1978 8616; +86 136 1934 2312, Email ;
| | - Jinhui Tian
- Evidence-Based Medicine Center, Lanzhou University, Lanzhou, Gansu Province, People’s Republic of China
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Chao H, Hu Y, Zhao L, Xin S, Ni Q, Zhang P, Chen M. Biogenesis, Functions, Interactions, and Resources of Non-Coding RNAs in Plants. Int J Mol Sci 2022; 23:ijms23073695. [PMID: 35409060 PMCID: PMC8998614 DOI: 10.3390/ijms23073695] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/19/2022] [Accepted: 03/23/2022] [Indexed: 12/14/2022] Open
Abstract
Plant transcriptomes encompass a large number of functional non-coding RNAs (ncRNAs), only some of which have protein-coding capacity. Since their initial discovery, ncRNAs have been classified into two broad categories based on their biogenesis and mechanisms of action, housekeeping ncRNAs and regulatory ncRNAs. With advances in RNA sequencing technology and computational methods, bioinformatics resources continue to emerge and update rapidly, including workflow for in silico ncRNA analysis, up-to-date platforms, databases, and tools dedicated to ncRNA identification and functional annotation. In this review, we aim to describe the biogenesis, biological functions, and interactions with DNA, RNA, protein, and microorganism of five major regulatory ncRNAs (miRNA, siRNA, tsRNA, circRNA, lncRNA) in plants. Then, we systematically summarize tools for analysis and prediction of plant ncRNAs, as well as databases. Furthermore, we discuss the silico analysis process of these ncRNAs and present a protocol for step-by-step computational analysis of ncRNAs. In general, this review will help researchers better understand the world of ncRNAs at multiple levels.
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Affiliation(s)
| | | | | | | | | | - Peijing Zhang
- Correspondence: (P.Z.); (M.C.); Tel./Fax: +86-(0)571-88206612 (M.C.)
| | - Ming Chen
- Correspondence: (P.Z.); (M.C.); Tel./Fax: +86-(0)571-88206612 (M.C.)
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19
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Epigenetic regulation of human non-coding RNA gene transcription. Biochem Soc Trans 2022; 50:723-736. [PMID: 35285478 DOI: 10.1042/bst20210860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 02/18/2022] [Accepted: 02/21/2022] [Indexed: 12/12/2022]
Abstract
Recent investigations on the non-protein-coding transcriptome of human cells have revealed previously hidden layers of gene regulation relying on regulatory non-protein-coding (nc) RNAs, including the widespread ncRNA-dependent regulation of epigenetic chromatin states and of mRNA translation and stability. However, despite its centrality, the epigenetic regulation of ncRNA genes has received relatively little attention. In this mini-review, we attempt to provide a synthetic account of recent literature suggesting an unexpected complexity in chromatin-dependent regulation of ncRNA gene transcription by the three human nuclear RNA polymerases. Emerging common features, like the heterogeneity of chromatin states within ncRNA multigene families and their influence on 3D genome organization, point to unexplored issues whose investigation could lead to a better understanding of the whole human epigenomic network.
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Wang L, Xu D, Scharf K, Frank W, Leister D, Kleine T. The RNA-binding protein RBP45D of Arabidopsis promotes transgene silencing and flowering time. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 109:1397-1415. [PMID: 34919766 DOI: 10.1111/tpj.15637] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 12/09/2021] [Accepted: 12/11/2021] [Indexed: 06/14/2023]
Abstract
RNA-directed DNA methylation (RdDM) helps to defend plants against invasive nucleic acids. In the canonical form of RdDM, 24-nt small interfering RNAs (siRNAs) are produced by DICER-LIKE 3 (DCL3). The siRNAs are loaded onto ARGONAUTE (AGO) proteins leading ultimately to de novo DNA methylation. Here, we introduce the Arabidopsis thaliana prors1 (LUC) transgenic system, in which 24-nt siRNAs are generated to silence the promoter-LUC construct. A forward genetic screen performed with this system identified, besides known components of RdDM (NRPD2A, RDR2, AGO4 and AGO6), the RNA-binding protein RBP45D. RBP45D is involved in CHH (where H is A, C or T) DNA methylation, and maintains siRNA production originating from the LUC transgene. RBP45D is localized to the nucleus, where it is associated with small nuclear RNAs (snRNAs) and small nucleolar RNAs (snoRNAs). RNA-Seq analysis showed that in CRISPR/Cas-mediated rbp-ko lines FLOWERING LOCUS C (FLC) mRNA levels are upregulated and several loci differentially spliced, among them FLM. In consequence, loss of RBP45D delays flowering, presumably mediated by the release of FLC levels and/or alternative splicing of FLM. Moreover, because levels and processing of transcripts of known RdDM genes are not altered in rbp-ko lines, RBP45D should have a more direct function in transgene silencing, probably independent of the canonical RdDM pathway. We suggest that RBP45D facilitates siRNA production by stabilizing either the precursor RNA or the slicer protein. Alternatively, RBP45D could be involved in chromatin modifications, participate in retention of Pol IV transcripts and/or in Pol V-dependent lncRNA retention in chromatin to enable their scaffold function.
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Affiliation(s)
- Liangsheng Wang
- Plant Molecular Biology (Botany), Faculty of Biology, Ludwig-Maximilians-Universität München, 82152, Planegg-Martinsried, Germany
| | - Duorong Xu
- Plant Molecular Biology (Botany), Faculty of Biology, Ludwig-Maximilians-Universität München, 82152, Planegg-Martinsried, Germany
| | - Kristin Scharf
- Plant Molecular Cell Biology, Ludwig-Maximilians-Universität München, 82152, Planegg-Martinsried, Germany
| | - Wolfgang Frank
- Plant Molecular Cell Biology, Ludwig-Maximilians-Universität München, 82152, Planegg-Martinsried, Germany
| | - Dario Leister
- Plant Molecular Biology (Botany), Faculty of Biology, Ludwig-Maximilians-Universität München, 82152, Planegg-Martinsried, Germany
| | - Tatjana Kleine
- Plant Molecular Biology (Botany), Faculty of Biology, Ludwig-Maximilians-Universität München, 82152, Planegg-Martinsried, Germany
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Baldini L, Robert A, Charpentier B, Labialle S. Phylogenetic and molecular analyses identify SNORD116 targets involved in the Prader Willi syndrome. Mol Biol Evol 2021; 39:6454102. [PMID: 34893870 PMCID: PMC8789076 DOI: 10.1093/molbev/msab348] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The eutherian-specific SNORD116 family of repeated box C/D snoRNA genes is suspected to play a major role in the Prader–Willi syndrome (PWS), yet its molecular function remains poorly understood. Here, we combined phylogenetic and molecular analyses to identify candidate RNA targets. Based on the analysis of several eutherian orthologs, we found evidence of extensive birth-and-death and conversion events during SNORD116 gene history. However, the consequences for phylogenetic conservation were heterogeneous along the gene sequence. The standard snoRNA elements necessary for RNA stability and association with dedicated core proteins were the most conserved, in agreement with the hypothesis that SNORD116 generate genuine snoRNAs. In addition, one of the two antisense elements typically involved in RNA target recognition was largely dominated by a unique sequence present in at least one subset of gene paralogs in most species, likely the result of a selective effect. In agreement with a functional role, this ASE exhibited a hybridization capacity with putative mRNA targets that was strongly conserved in eutherians. Moreover, transient downregulation experiments in human cells showed that Snord116 controls the expression and splicing levels of these mRNAs. The functions of two of them, diacylglycerol kinase kappa and Neuroligin 3, extend the description of the molecular bases of PWS and reveal unexpected molecular links with the Fragile X syndrome and autism spectrum disorders.
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Affiliation(s)
- Laeya Baldini
- Université de Lorraine, CNRS, IMoPA, F-54000 Nancy, France
| | - Anne Robert
- Université de Lorraine, CNRS, IMoPA, F-54000 Nancy, France
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22
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Barros-Silva D, Klavert J, Jenster G, Jerónimo C, Lafontaine DLJ, Martens-Uzunova ES. The role of OncoSnoRNAs and Ribosomal RNA 2'-O-methylation in Cancer. RNA Biol 2021; 18:61-74. [PMID: 34775914 PMCID: PMC8677010 DOI: 10.1080/15476286.2021.1991167] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Ribosomes are essential nanomachines responsible for all protein production in cells. Ribosome biogenesis and function are energy costly processes, they are tightly regulated to match cellular needs. In cancer, major pathways that control ribosome biogenesis and function are often deregulated to ensure cell survival and to accommodate the continuous proliferation of tumour cells. Ribosomal RNAs (rRNAs) are abundantly modified with 2'-O-methylation (Nm, ribomethylation) being one of the most common modifications. In eukaryotic ribosomes, ribomethylation is performed by the methyltransferase Fibrillarin guided by box C/D small nucleolar RNAs (snoRNAs). Accumulating evidences indicate that snoRNA expression and ribosome methylation profiles are altered in cancer. Here we review our current knowledge on differential snoRNA expression and rRNA 2ʹ-O methylation in the context of human malignancies, and discuss the consequences and opportunities for cancer diagnostics, prognostics, and therapeutics.
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Affiliation(s)
- Daniela Barros-Silva
- Department of Urology, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, The Netherlands.,Cancer Biology and Epigenetics Group, Research Center of IPO Porto (CI-IPOP) / RISE@CI-IPOP (Health Research Network), Portuguese Oncology Institute of Porto (IPO Porto) / Porto Comprehensive Cancer Center (Porto.CCC), Porto, Portugal
| | - Jonathan Klavert
- Department of Urology, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, The Netherlands
| | - Guido Jenster
- Department of Urology, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, The Netherlands
| | - Carmen Jerónimo
- Cancer Biology and Epigenetics Group, Research Center of IPO Porto (CI-IPOP) / RISE@CI-IPOP (Health Research Network), Portuguese Oncology Institute of Porto (IPO Porto) / Porto Comprehensive Cancer Center (Porto.CCC), Porto, Portugal.,Department of Pathology and Molecular Immunology, School of Medicine & Biomedical Sciences, University of Porto (Icbas-up), Porto, Portugal
| | - Denis L J Lafontaine
- Rna Molecular Biology, Fonds De La Recherche Scientifique (F.r.s./fnrs), Université Libre De Bruxelles (Ulb), BioPark Campus, Gosselies, Belgium
| | - Elena S Martens-Uzunova
- Department of Urology, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, The Netherlands
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23
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Talross GJS, Deryusheva S, Gall JG. Stable lariats bearing a snoRNA (slb-snoRNA) in eukaryotic cells: A level of regulation for guide RNAs. Proc Natl Acad Sci U S A 2021; 118:e2114156118. [PMID: 34725166 PMCID: PMC8609340 DOI: 10.1073/pnas.2114156118] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/26/2021] [Indexed: 12/31/2022] Open
Abstract
Small nucleolar (sno)RNAs guide posttranscriptional modifications essential for the biogenesis and function of their target. The majority of snoRNAs in higher eukaryotes are encoded within introns. They are first released from nascent transcripts in the form of a lariat and rapidly targeted by the debranching enzyme and nuclear exonucleases for linearization and further trimming. In this study, we report that some snoRNAs are encoded within unusually stable intronic RNAs. These intronic sequences can escape the debranching enzyme and accumulate as lariats. Stable lariats bearing a snoRNA, or slb-snoRNA, are associated with snoRNA binding proteins but do not guide posttranscriptional modification. While most slb-snoRNAs accumulate in the nucleus, some can be exported to the cytoplasm. We find that this export competes with snoRNA maturation. Slb-snoRNAs provide a previously unknown layer of regulation to snoRNA and snoRNA binding proteins.
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Affiliation(s)
- Gaëlle J S Talross
- Department of Embryology, Carnegie Institution for Science, Baltimore, MD 21218
| | - Svetlana Deryusheva
- Department of Embryology, Carnegie Institution for Science, Baltimore, MD 21218
| | - Joseph G Gall
- Department of Embryology, Carnegie Institution for Science, Baltimore, MD 21218
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24
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Bogard B, Francastel C, Hubé F. Systematic Identification and Functional Validation of New snoRNAs in Human Muscle Progenitors. Noncoding RNA 2021; 7:ncrna7030056. [PMID: 34564318 PMCID: PMC8482216 DOI: 10.3390/ncrna7030056] [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: 08/03/2021] [Revised: 09/08/2021] [Accepted: 09/10/2021] [Indexed: 11/16/2022] Open
Abstract
Small non-coding RNAs (sncRNAs) represent an important class of regulatory RNAs involved in the regulation of transcription, RNA splicing or translation. Among these sncRNAs, small nucleolar RNAs (snoRNAs) mostly originate from intron splicing in humans and are central to posttranscriptional regulation of gene expression. However, the characterization of the complete repertoire of sncRNAs in a given cellular context and the functional annotation of the human transcriptome are far from complete. Here, we report the large-scale identification of sncRNAs in the size range of 50 to 200 nucleotides without a priori on their biogenesis, structure and genomic origin in the context of normal human muscle cells. We provided a complete set of experimental validation of novel candidate snoRNAs by evaluating the prerequisites for their biogenesis and functionality, leading to their validation as genuine snoRNAs. Interestingly, we also found intergenic snoRNAs, which we showed are in fact integrated into candidate introns of unannotated transcripts or degraded by the Nonsense Mediated Decay pathway. Hence, intergenic snoRNAs represent a new type of landmark for the identification of new transcripts that have gone undetected because of low abundance or degradation after the release of the snoRNA.
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25
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Bergeron D, Laforest C, Carpentier S, Calvé A, Fafard-Couture É, Deschamps-Francoeur G, Scott MS. SnoRNA copy regulation affects family size, genomic location and family abundance levels. BMC Genomics 2021; 22:414. [PMID: 34090325 PMCID: PMC8178906 DOI: 10.1186/s12864-021-07757-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 05/26/2021] [Indexed: 12/03/2022] Open
Abstract
Background Small nucleolar RNAs (snoRNAs) are an abundant class of noncoding RNAs present in all eukaryotes and best known for their involvement in ribosome biogenesis. In mammalian genomes, many snoRNAs exist in multiple copies, resulting from recombination and retrotransposition from an ancestral snoRNA. To gain insight into snoRNA copy regulation, we used Rfam classification and normal human tissue expression datasets generated using low structure bias RNA-seq to characterize snoRNA families. Results We found that although box H/ACA families are on average larger than box C/D families, the number of expressed members is similar for both types. Family members can cover a wide range of average abundance values, but importantly, expression variability of individual members of a family is preferred over the total variability of the family, especially for box H/ACA snoRNAs, suggesting that while members are likely differentially regulated, mechanisms exist to ensure uniformity of the total family abundance across tissues. Box C/D snoRNA family members are mostly embedded in the same host gene while box H/ACA family members tend to be encoded in more than one different host, supporting a model in which box C/D snoRNA duplication occurred mostly by cis recombination while box H/ACA snoRNA families have gained copy members through retrotransposition. And unexpectedly, snoRNAs encoded in the same host gene can be regulated independently, as some snoRNAs within the same family vary in abundance in a divergent way between tissues. Conclusions SnoRNA copy regulation affects family sizes, genomic location of the members and controls simultaneously member and total family abundance to respond to the needs of individual tissues. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-07757-1.
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Affiliation(s)
- Danny Bergeron
- Département de biochimie et de génomique fonctionnelle, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec, J1E 4K8, Canada
| | - Cédric Laforest
- Département de biochimie et de génomique fonctionnelle, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec, J1E 4K8, Canada
| | - Stacey Carpentier
- Département de biochimie et de génomique fonctionnelle, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec, J1E 4K8, Canada
| | - Annabelle Calvé
- Département de biochimie et de génomique fonctionnelle, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec, J1E 4K8, Canada
| | - Étienne Fafard-Couture
- Département de biochimie et de génomique fonctionnelle, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec, J1E 4K8, Canada
| | - Gabrielle Deschamps-Francoeur
- Département de biochimie et de génomique fonctionnelle, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec, J1E 4K8, Canada
| | - Michelle S Scott
- Département de biochimie et de génomique fonctionnelle, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec, J1E 4K8, Canada.
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26
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Fafard-Couture É, Bergeron D, Couture S, Abou-Elela S, Scott MS. Annotation of snoRNA abundance across human tissues reveals complex snoRNA-host gene relationships. Genome Biol 2021; 22:172. [PMID: 34088344 PMCID: PMC8176728 DOI: 10.1186/s13059-021-02391-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 05/26/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Small nucleolar RNAs (snoRNAs) are mid-size non-coding RNAs required for ribosomal RNA modification, implying a ubiquitous tissue distribution linked to ribosome synthesis. However, increasing numbers of studies identify extra-ribosomal roles of snoRNAs in modulating gene expression, suggesting more complex snoRNA abundance patterns. Therefore, there is a great need for mapping the snoRNome in different human tissues as the blueprint for snoRNA functions. RESULTS We used a low structure bias RNA-Seq approach to accurately quantify snoRNAs and compare them to the entire transcriptome in seven healthy human tissues (breast, ovary, prostate, testis, skeletal muscle, liver, and brain). We identify 475 expressed snoRNAs categorized in two abundance classes that differ significantly in their function, conservation level, and correlation with their host gene: 390 snoRNAs are uniformly expressed and 85 are enriched in the brain or reproductive tissues. Most tissue-enriched snoRNAs are embedded in lncRNAs and display strong correlation of abundance with them, whereas uniformly expressed snoRNAs are mostly embedded in protein-coding host genes and are mainly non- or anticorrelated with them. Fifty-nine percent of the non-correlated or anticorrelated protein-coding host gene/snoRNA pairs feature dual-initiation promoters, compared to only 16% of the correlated non-coding host gene/snoRNA pairs. CONCLUSIONS Our results demonstrate that snoRNAs are not a single homogeneous group of housekeeping genes but include highly regulated tissue-enriched RNAs. Indeed, our work indicates that the architecture of snoRNA host genes varies to uncouple the host and snoRNA expressions in order to meet the different snoRNA abundance levels and functional needs of human tissues.
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Affiliation(s)
- Étienne Fafard-Couture
- Département de biochimie et de génomique fonctionnelle, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec, J1E 4 K8, Canada
| | - Danny Bergeron
- Département de biochimie et de génomique fonctionnelle, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec, J1E 4 K8, Canada
| | - Sonia Couture
- Département de microbiologie et d'infectiologie, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec, J1E 4 K8, Canada
| | - Sherif Abou-Elela
- Département de microbiologie et d'infectiologie, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec, J1E 4 K8, Canada.
| | - Michelle S Scott
- Département de biochimie et de génomique fonctionnelle, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec, J1E 4 K8, Canada.
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27
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Jacovetti C, Bayazit MB, Regazzi R. Emerging Classes of Small Non-Coding RNAs With Potential Implications in Diabetes and Associated Metabolic Disorders. Front Endocrinol (Lausanne) 2021; 12:670719. [PMID: 34040585 PMCID: PMC8142323 DOI: 10.3389/fendo.2021.670719] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 04/20/2021] [Indexed: 11/13/2022] Open
Abstract
Most of the sequences in the human genome do not code for proteins but generate thousands of non-coding RNAs (ncRNAs) with regulatory functions. High-throughput sequencing technologies and bioinformatic tools significantly expanded our knowledge about ncRNAs, highlighting their key role in gene regulatory networks, through their capacity to interact with coding and non-coding RNAs, DNAs and proteins. NcRNAs comprise diverse RNA species, including amongst others PIWI-interacting RNAs (piRNAs), involved in transposon silencing, and small nucleolar RNAs (snoRNAs), which participate in the modification of other RNAs such as ribosomal RNAs and transfer RNAs. Recently, a novel class of small ncRNAs generated from the cleavage of tRNAs or pre-tRNAs, called tRNA-derived small RNAs (tRFs) has been identified. tRFs have been suggested to regulate protein translation, RNA silencing and cell survival. While for other ncRNAs an implication in several pathologies is now well established, the potential involvement of piRNAs, snoRNAs and tRFs in human diseases, including diabetes, is only beginning to emerge. In this review, we summarize fundamental aspects of piRNAs, snoRNAs and tRFs biology. We discuss their biogenesis while emphasizing on novel sequencing technologies that allow ncRNA discovery and annotation. Moreover, we give an overview of genomic approaches to decrypt their mechanisms of action and to study their functional relevance. The review will provide a comprehensive landscape of the regulatory roles of these three types of ncRNAs in metabolic disorders by reporting their differential expression in endocrine pancreatic tissue as well as their contribution to diabetes incidence and diabetes-underlying conditions such as inflammation. Based on these discoveries we discuss the potential use of piRNAs, snoRNAs and tRFs as promising therapeutic targets in metabolic disorders.
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Affiliation(s)
- Cécile Jacovetti
- Department of Fundamental Neurosciences, University of Lausanne, Lausanne, Switzerland
| | - Mustafa Bilal Bayazit
- Department of Fundamental Neurosciences, University of Lausanne, Lausanne, Switzerland
| | - Romano Regazzi
- Department of Fundamental Neurosciences, University of Lausanne, Lausanne, Switzerland
- Department of Biomedical Sciences, University of Lausanne, Lausanne, Switzerland
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28
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Baldini L, Charpentier B, Labialle S. Emerging Data on the Diversity of Molecular Mechanisms Involving C/D snoRNAs. Noncoding RNA 2021; 7:ncrna7020030. [PMID: 34066559 PMCID: PMC8162545 DOI: 10.3390/ncrna7020030] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 04/28/2021] [Accepted: 04/30/2021] [Indexed: 12/15/2022] Open
Abstract
Box C/D small nucleolar RNAs (C/D snoRNAs) represent an ancient family of small non-coding RNAs that are classically viewed as housekeeping guides for the 2′-O-methylation of ribosomal RNA in Archaea and Eukaryotes. However, an extensive set of studies now argues that they are involved in mechanisms that go well beyond this function. Here, we present these pieces of evidence in light of the current comprehension of the molecular mechanisms that control C/D snoRNA expression and function. From this inventory emerges that an accurate description of these activities at a molecular level is required to let the snoRNA field enter in a second age of maturity.
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Affiliation(s)
| | - Bruno Charpentier
- Correspondence: (B.C.); (S.L.); Tel.: +33-3-72-74-66-27 (B.C.); +33-3-72-74-66-51 (S.L.)
| | - Stéphane Labialle
- Correspondence: (B.C.); (S.L.); Tel.: +33-3-72-74-66-27 (B.C.); +33-3-72-74-66-51 (S.L.)
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29
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Breuer R, Gomes-Filho JV, Randau L. Conservation of Archaeal C/D Box sRNA-Guided RNA Modifications. Front Microbiol 2021; 12:654029. [PMID: 33776983 PMCID: PMC7994747 DOI: 10.3389/fmicb.2021.654029] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 02/19/2021] [Indexed: 12/18/2022] Open
Abstract
Post-transcriptional modifications fulfill many important roles during ribosomal RNA maturation in all three domains of life. Ribose 2'-O-methylations constitute the most abundant chemical rRNA modification and are, for example, involved in RNA folding and stabilization. In archaea, these modification sites are determined by variable sets of C/D box sRNAs that guide the activity of the rRNA 2'-O-methyltransferase fibrillarin. Each C/D box sRNA contains two guide sequences that can act in coordination to bridge rRNA sequences. Here, we will review the landscape of archaeal C/D box sRNA genes and their target sites. One focus is placed on the apparent accelerated evolution of guide sequences and the varied pairing of the two individual guides, which results in different rRNA modification patterns and RNA chaperone activities.
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Affiliation(s)
| | | | - Lennart Randau
- Prokaryotic RNA Biology, Philipps-Universität Marburg, Marburg, Germany
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30
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Gultyaev AP, Spronken MI, Funk M, Fouchier RAM, Richard M. Insertions of codons encoding basic amino acids in H7 hemagglutinins of influenza A viruses occur by recombination with RNA at hotspots near snoRNA binding sites. RNA (NEW YORK, N.Y.) 2021; 27:123-132. [PMID: 33188057 PMCID: PMC7812872 DOI: 10.1261/rna.077495.120] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 11/06/2020] [Indexed: 06/11/2023]
Abstract
The presence of multiple basic amino acids in the protease cleavage site of the hemagglutinin (HA) protein is the main molecular determinant of virulence of highly pathogenic avian influenza (HPAI) viruses. Recombination of HA RNA with other RNA molecules of host or virus origin is a dominant mechanism of multibasic cleavage site (MBCS) acquisition for H7 subtype HA. Using alignments of HA RNA sequences from documented cases of MBCS insertion due to recombination, we show that such recombination with host RNAs is most likely to occur at particular hotspots in ribosomal RNAs (rRNAs), transfer RNAs (tRNAs), and viral RNAs. The locations of these hotspots in highly abundant RNAs indicate that RNA recombination is facilitated by the binding of small nucleolar RNA (snoRNA) near the recombination points.
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MESH Headings
- Amino Acids, Basic/genetics
- Amino Acids, Basic/metabolism
- Animals
- Base Pairing
- Base Sequence
- Chickens/virology
- Codon
- Gene Expression Regulation
- Hemagglutinin Glycoproteins, Influenza Virus/genetics
- Hemagglutinin Glycoproteins, Influenza Virus/metabolism
- Host-Pathogen Interactions/genetics
- Humans
- Influenza A virus/genetics
- Influenza A virus/metabolism
- Influenza A virus/pathogenicity
- Influenza in Birds/virology
- Influenza, Human/virology
- Mutagenesis, Insertional
- RNA, Small Nucleolar/chemistry
- RNA, Small Nucleolar/genetics
- RNA, Small Nucleolar/metabolism
- RNA, Viral/chemistry
- RNA, Viral/genetics
- RNA, Viral/metabolism
- Recombination, Genetic
- Sequence Alignment
- Virulence
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Affiliation(s)
- Alexander P Gultyaev
- Department of Viroscience, Erasmus Medical Center, 3000 CA Rotterdam, the Netherlands
- Group Imaging and Bioinformatics, Leiden Institute of Advanced Computer Science (LIACS), Leiden University, 2300 RA Leiden, the Netherlands
| | - Monique I Spronken
- Department of Viroscience, Erasmus Medical Center, 3000 CA Rotterdam, the Netherlands
| | - Mathis Funk
- Department of Viroscience, Erasmus Medical Center, 3000 CA Rotterdam, the Netherlands
| | - Ron A M Fouchier
- Department of Viroscience, Erasmus Medical Center, 3000 CA Rotterdam, the Netherlands
| | - Mathilde Richard
- Department of Viroscience, Erasmus Medical Center, 3000 CA Rotterdam, the Netherlands
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31
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Dsouza VL, Adiga D, Sriharikrishnaa S, Suresh PS, Chatterjee A, Kabekkodu SP. Small nucleolar RNA and its potential role in breast cancer - A comprehensive review. Biochim Biophys Acta Rev Cancer 2021; 1875:188501. [PMID: 33400969 DOI: 10.1016/j.bbcan.2020.188501] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 12/07/2020] [Accepted: 12/28/2020] [Indexed: 02/07/2023]
Abstract
Small Nucleolar RNAs (snoRNAs) are known for their canonical functions, including ribosome biogenesis and RNA modification. snoRNAs act as endogenous sponges that regulate miRNA expression. Thus, precise snoRNA expression is critical for fine-tuning miRNA expression. snoRNAs processed into miRNA-like sequences play a crucial role in regulating the expression of protein-coding genes similar to that of miRNAs. Recent studies have linked snoRNA deregulation to breast cancer (BC). Inappropriate snoRNA expression contributes to BC pathology by facilitating breast cells to acquire cancer hallmarks. Since snoRNAs show significant differential expression in normal and cancer conditions, measuring snoRNA levels could be useful for BC prognosis and diagnosis. The present article provides a comprehensive overview of the role of snoRNAs in breast cancer pathology. More specifically, we have discussed the regulation, biological function, signaling pathways, and clinical utility of abnormally expressed snoRNAs in BC. Besides, we have also discussed the role of snoRNA host genes in breast tumorigenesis and emerging and future research directions in the field of snoRNA and cancer.
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Affiliation(s)
- Venzil Lavie Dsouza
- Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Divya Adiga
- Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - S Sriharikrishnaa
- Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Padmanaban S Suresh
- School of Biotechnology, National Institute of Technology, Calicut, Kerala 673601, India
| | - Aniruddha Chatterjee
- Department of Pathology, Otago Medical School, Dunedin Campus, University of Otago, Dunedin, New Zealand
| | - Shama Prasada Kabekkodu
- Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India.
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32
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Godel M, Morena D, Ananthanarayanan P, Buondonno I, Ferrero G, Hattinger CM, Di Nicolantonio F, Serra M, Taulli R, Cordero F, Riganti C, Kopecka J. Small Nucleolar RNAs Determine Resistance to Doxorubicin in Human Osteosarcoma. Int J Mol Sci 2020; 21:ijms21124500. [PMID: 32599901 PMCID: PMC7349977 DOI: 10.3390/ijms21124500] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 06/19/2020] [Accepted: 06/21/2020] [Indexed: 02/07/2023] Open
Abstract
Doxorubicin (Dox) is one of the most important first-line drugs used in osteosarcoma therapy. Multiple and not fully clarified mechanisms, however, determine resistance to Dox. With the aim of identifying new markers associated with Dox-resistance, we found a global up-regulation of small nucleolar RNAs (snoRNAs) in human Dox-resistant osteosarcoma cells. We investigated if and how snoRNAs are linked to resistance. After RT-PCR validation of snoRNAs up-regulated in osteosarcoma cells with different degrees of resistance to Dox, we overexpressed them in Dox-sensitive cells. We then evaluated Dox cytotoxicity and changes in genes relevant for osteosarcoma pathogenesis by PCR arrays. SNORD3A, SNORA13 and SNORA28 reduced Dox-cytotoxicity when over-expressed in Dox-sensitive cells. In these cells, GADD45A and MYC were up-regulated, TOP2A was down-regulated. The same profile was detected in cells with acquired resistance to Dox. GADD45A/MYC-silencing and TOP2A-over-expression counteracted the resistance to Dox induced by snoRNAs. We reported for the first time that snoRNAs induce resistance to Dox in human osteosarcoma, by modulating the expression of genes involved in DNA damaging sensing, DNA repair, ribosome biogenesis, and proliferation. Targeting snoRNAs or down-stream genes may open new treatment perspectives in chemoresistant osteosarcomas.
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Affiliation(s)
- Martina Godel
- Department of Oncology, University of Torino, 1026 Torino, Italy; (M.G.); (D.M.); (P.A.); (I.B.); (F.D.N.); (R.T.)
| | - Deborah Morena
- Department of Oncology, University of Torino, 1026 Torino, Italy; (M.G.); (D.M.); (P.A.); (I.B.); (F.D.N.); (R.T.)
| | - Preeta Ananthanarayanan
- Department of Oncology, University of Torino, 1026 Torino, Italy; (M.G.); (D.M.); (P.A.); (I.B.); (F.D.N.); (R.T.)
| | - Ilaria Buondonno
- Department of Oncology, University of Torino, 1026 Torino, Italy; (M.G.); (D.M.); (P.A.); (I.B.); (F.D.N.); (R.T.)
| | - Giulio Ferrero
- Department of Computer Science, University of Torino, 10149 Torino, Italy; (G.F.); (F.C.)
- Department of Clinical and Biological Sciences, University of Torino, 10043 Orbassano, Italy
| | - Claudia M. Hattinger
- Laboratory of Experimental Oncology, Pharmacogenomics and Pharmacogenetics Research Unit, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy; (C.M.H.); (M.S.)
| | - Federica Di Nicolantonio
- Department of Oncology, University of Torino, 1026 Torino, Italy; (M.G.); (D.M.); (P.A.); (I.B.); (F.D.N.); (R.T.)
- Candiolo Cancer Institute, FPO–IRCCS, 10060 Candiolo, Italy
| | - Massimo Serra
- Laboratory of Experimental Oncology, Pharmacogenomics and Pharmacogenetics Research Unit, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy; (C.M.H.); (M.S.)
| | - Riccardo Taulli
- Department of Oncology, University of Torino, 1026 Torino, Italy; (M.G.); (D.M.); (P.A.); (I.B.); (F.D.N.); (R.T.)
| | - Francesca Cordero
- Department of Computer Science, University of Torino, 10149 Torino, Italy; (G.F.); (F.C.)
| | - Chiara Riganti
- Department of Oncology, University of Torino, 1026 Torino, Italy; (M.G.); (D.M.); (P.A.); (I.B.); (F.D.N.); (R.T.)
- Correspondence: (C.R.); (J.K.); Tel.: +39-0116705857 (C.R.); +39-0116705849 (J.K.)
| | - Joanna Kopecka
- Department of Oncology, University of Torino, 1026 Torino, Italy; (M.G.); (D.M.); (P.A.); (I.B.); (F.D.N.); (R.T.)
- Correspondence: (C.R.); (J.K.); Tel.: +39-0116705857 (C.R.); +39-0116705849 (J.K.)
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