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Einson J, Glinos D, Boerwinkle E, Castaldi P, Darbar D, de Andrade M, Ellinor P, Fornage M, Gabriel S, Germer S, Gibbs R, Hersh CP, Johnsen J, Kaplan R, Konkle BA, Kooperberg C, Nassir R, Loos RJF, Meyers DA, Mitchell BD, Psaty B, Vasan RS, Rich SS, Rienstra M, Rotter JI, Saferali A, Shoemaker MB, Silverman E, Smith AV, Mohammadi P, Castel SE, Iossifov I, Lappalainen T. Genetic control of mRNA splicing as a potential mechanism for incomplete penetrance of rare coding variants. Genetics 2023; 224:iyad115. [PMID: 37348055 PMCID: PMC10411602 DOI: 10.1093/genetics/iyad115] [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: 02/02/2023] [Revised: 02/02/2023] [Accepted: 04/18/2023] [Indexed: 06/24/2023] Open
Abstract
Exonic variants present some of the strongest links between genotype and phenotype. However, these variants can have significant inter-individual pathogenicity differences, known as variable penetrance. In this study, we propose a model where genetically controlled mRNA splicing modulates the pathogenicity of exonic variants. By first cataloging exonic inclusion from RNA-sequencing data in GTEx V8, we find that pathogenic alleles are depleted on highly included exons. Using a large-scale phased whole genome sequencing data from the TOPMed consortium, we observe that this effect may be driven by common splice-regulatory genetic variants, and that natural selection acts on haplotype configurations that reduce the transcript inclusion of putatively pathogenic variants, especially when limiting to haploinsufficient genes. Finally, we test if this effect may be relevant for autism risk using families from the Simons Simplex Collection, but find that splicing of pathogenic alleles has a penetrance reducing effect here as well. Overall, our results indicate that common splice-regulatory variants may play a role in reducing the damaging effects of rare exonic variants.
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Affiliation(s)
- Jonah Einson
- Department of Biomedical Informatics, Columbia University, New York, NY 10027, USA
- New York Genome Center, New York, NY 10013, USA
| | | | - Eric Boerwinkle
- School of Public Health, University of Texas Health at Houston, Houston, TX 77030, USA
| | - Peter Castaldi
- Department of Medicine, Brigham & Women's Hospital, Boston, MA 02115, USA
| | - Dawood Darbar
- Department of Cardiology, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Mariza de Andrade
- Department of Quantitative Health Sciences, Mayo Clinic, Rochester, MN 55905, USA
| | - Patrick Ellinor
- Corrigan Minehan Heart Center, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Myriam Fornage
- Brown Foundation Institute of Molecular Medicine, McGovern Medical School, University of Texas Health at Houston, Houston, TX 77030, USA
| | | | | | - Richard Gibbs
- Department of Molecular and Human Genetics, Baylor College of Medicine Human Genome Sequencing Center, Houston, TX 77030, USA
| | - Craig P Hersh
- Channing Division of Network Medicine and Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Jill Johnsen
- Department of Hematology, University of Washington, Seattle, WA 98195, USA
| | - Robert Kaplan
- Department of Epidemiology & Population Health, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Barbara A Konkle
- Department of Hematology, University of Washington, Seattle, WA 98195, USA
| | | | - Rami Nassir
- Department of Pathology, School of Medicine, Umm Al-Qura University, Mecca 24382, Saudi Arabia
| | - Ruth J F Loos
- Environmental Medicine & Public Health, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Deborah A Meyers
- Department of Medicine, University of Arizona, Tucson, AZ 85721, USA
| | - Braxton D Mitchell
- Department of Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Geriatrics Research and Education Clinical Center, Baltimore Veterans Administration Medical Center, Baltimore, MD 21201, USA
| | - Bruce Psaty
- Cardiovascular Health Research Unit, Departments of Medicine, Epidemiology, and Health Systems and Population Health, University of Washington, Seattle, WA 98195, USA
| | | | - Stephen S Rich
- Public Health Sciences, University of Virginia, Charlottesville, VA 22903, USA
| | - Michael Rienstra
- Clinical Cardiology, UMCG Cardiology, Groningen 09713, the Netherlands
| | - Jerome I Rotter
- The Institute for Translational Genomics and Population Sciences, Department of Pediatrics, The Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, Torrance, CA 90502, USA
| | - Aabida Saferali
- Channing Division of Network Medicine and Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA
| | | | - Edwin Silverman
- Channing Division of Network Medicine and Division of Pulmonary and Critical Care Medicine, Brigham & Women's Hospital, Boston, MA 02115, USA
| | - Albert Vernon Smith
- Department of Biostatistics, University of Michigan, Ann Arbor, MI 48109, USA
| | | | - Pejman Mohammadi
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Stephane E Castel
- New York Genome Center, New York, NY 10013, USA
- Variant Bio, Seattle, WA 98102, USA
| | - Ivan Iossifov
- New York Genome Center, New York, NY 10013, USA
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA
| | - Tuuli Lappalainen
- New York Genome Center, New York, NY 10013, USA
- Department of Systems Biology, Columbia University, New York, NY 10027, USA
- Department of Gene Technology, KTH Royal Institute of Technology, Stockholm 114 28, Sweden
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Einson J, Glinos D, Boerwinkle E, Castaldi P, Darbar D, de Andrade M, Ellinor P, Fornage M, Gabriel S, Germer S, Gibbs R, Hersh CP, Johnsen J, Kaplan R, Konkle BA, Kooperberg C, Nassir R, Loos RJF, Meyers DA, Mitchell BD, Psaty B, Vasan RS, Rich SS, Rienstra M, Rotter JI, Saferali A, Shoemaker MB, Silverman E, Smith AV, Mohammadi P, Castel SE, Iossifov I, Lappalainen T. Genetic control of mRNA splicing as a potential mechanism for incomplete penetrance of rare coding variants. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.31.526505. [PMID: 36778406 PMCID: PMC9915611 DOI: 10.1101/2023.01.31.526505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Exonic variants present some of the strongest links between genotype and phenotype. However, these variants can have significant inter-individual pathogenicity differences, known as variable penetrance. In this study, we propose a model where genetically controlled mRNA splicing modulates the pathogenicity of exonic variants. By first cataloging exonic inclusion from RNA-seq data in GTEx v8, we find that pathogenic alleles are depleted on highly included exons. Using a large-scale phased WGS data from the TOPMed consortium, we observe that this effect may be driven by common splice-regulatory genetic variants, and that natural selection acts on haplotype configurations that reduce the transcript inclusion of putatively pathogenic variants, especially when limiting to haploinsufficient genes. Finally, we test if this effect may be relevant for autism risk using families from the Simons Simplex Collection, but find that splicing of pathogenic alleles has a penetrance reducing effect here as well. Overall, our results indicate that common splice-regulatory variants may play a role in reducing the damaging effects of rare exonic variants.
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Affiliation(s)
- Jonah Einson
- Department of Biomedical Informatics, Columbia University
- New York Genome Center
| | | | | | | | - Dawood Darbar
- Department of Cardiology, University of Illinois at Chicago
| | | | - Patrick Ellinor
- Corrigan Minehan Heart Center, Massachusetts General Hospital
| | - Myriam Fornage
- Brown Foundation Institute of Molecular Medicine, McGovern Medical School, University of Texas Health at Houston
| | | | | | - Richard Gibbs
- Department of Molecular and Human Genetics, Baylor College of Medicine Human Genome Sequencing Center
| | - Craig P Hersh
- Channing Division of Network Medicine and Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital
| | - Jill Johnsen
- Department of Hematology, University of Washington
| | - Robert Kaplan
- Department of Epidemiology & Population Health, Albert Einstein College of Medicine
| | | | | | - Rami Nassir
- Department of Pathology, School of Medicine, Umm Al-Qura University
| | - Ruth J F Loos
- Environmental Medicine & Public Health, Icahn School of Medicine at Mount Sinai
| | | | - Braxton D Mitchell
- Department of Medicine, University of Maryland School of Medicine
- Geriatrics Research and Education Clinical Center, Baltimore Veterans Administration Medical Center
| | - Bruce Psaty
- Cardiovascular Health Research Unit, Departments of Medicine, Epidemiology, and Health Systems and Population Health, University of Washington
| | | | | | | | - Jerome I Rotter
- The Institute for Translational Genomics and Population Sciences, Department of Pediatrics, The Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center
| | - Aabida Saferali
- Channing Division of Network Medicine and Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital
| | | | - Edwin Silverman
- Channing Division of Network Medicine and Division of Pulmonary and Critical Care Medicine, Brigham & Women's Hospital
| | | | - Pejman Mohammadi
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute
| | | | | | - Tuuli Lappalainen
- Department of Systems Biology, Columbia University
- Department of Gene Technology, KTH Royal Institute of Technology
- New York Genome Center
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Identification of Candidate mRNA Isoforms for Prostate Cancer-Risk SNPs Utilizing Iso-eQTL and sQTL Methods. Int J Mol Sci 2022; 23:ijms232012406. [PMID: 36293264 PMCID: PMC9604153 DOI: 10.3390/ijms232012406] [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: 08/13/2022] [Revised: 10/09/2022] [Accepted: 10/11/2022] [Indexed: 11/17/2022] Open
Abstract
Single nucleotide polymorphisms (SNPs) impacting the alternative splicing (AS) process (sQTLs) or isoform expression (iso-eQTL) are implicated as important cancer regulatory elements. To find the sQTL and iso-eQTL, we retrieved prostate cancer (PrCa) tissue RNA-seq and genotype data originating from 385 PrCa European patients from The Cancer Genome Atlas. We conducted RNA-seq analysis with isoform-based and splice event-based approaches. The MatrixEQTL was used to identify PrCa-associated sQTLs and iso-eQTLs. The overlap between sQTL and iso-eQTL with GWAS loci and those that are differentially expressed between cancer and normal tissue were identified. The cis-acting associations (FDR < 0.05) for PrCa-risk SNPs identified 42, 123, and 90 PrCa-associated cassette exons, intron retention, and mRNA isoforms belonging to 25, 95, and 83 genes, respectively; while assessment of trans-acting association (FDR < 0.05) yielded 59, 65, and 196 PrCa-associated cassette exons, intron retention and mRNA isoforms belonging to 35, 55, and 181 genes, respectively. The results suggest that functional PrCa-associated SNPs can play a role in PrCa genesis by making an important contribution to the dysregulation of AS and, consequently, impacting the expression of the mRNA isoforms.
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Xylem Transcriptome Analysis in Contrasting Wood Phenotypes of Eucalyptus urophylla × tereticornis Hybrids. FORESTS 2022. [DOI: 10.3390/f13071102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
An investigation of the effects of two important post-transcriptional regulatory mechanisms, gene transcription and alternative splicing (AS), on the wood formation of Eucalyptusurophylla × tereticornis, an economic tree species widely planted in southern China, was carried out. We performed RNA-seq on E. urophylla × tereticornis hybrids with highly contrasting wood basic density (BD), cellulose content (CC), hemicellulose content (HC), and lignin content (LC). Signals of strong differentially expressed genes (DEGs) and differentially spliced genes (DSGs) were detected in all four groups of wood properties, suggesting that gene transcription and selective splicing may have important regulatory roles in wood properties. We found that there was little overlap between DEGs and DSGs in groups of the same trait. Furthermore, the key DEGs and DSGs that were detected simultaneously in the four groups tended to be enriched in different Gene Ontology terms, Kyoto Encyclopedia of Genes and Genomes pathways, and transcription factors. These results implied that regulation of gene transcription and AS is controlled by independent regulatory systems in wood formation. Lastly, we detected transcript levels of known wood biosynthetic genes and found that 79 genes encoding mainly enzymes or proteins such as UGT, LAC, CAD, and CESA may be involved in the positive or negative regulation of wood properties. This study reveals potential molecular mechanisms that may regulate wood formation and will contribute to the genetic improvement of Eucalyptus.
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Makowczenko KG, Jastrzebski JP, Paukszto L, Dobrzyn K, Kiezun M, Smolinska N, Kaminski T. Chemerin Impact on Alternative mRNA Transcription in the Porcine Luteal Cells. Cells 2022; 11:715. [PMID: 35203364 PMCID: PMC8870241 DOI: 10.3390/cells11040715] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 02/04/2022] [Accepted: 02/15/2022] [Indexed: 02/06/2023] Open
Abstract
Chemerin participates in the regulation of processes related to physiological and disorder mechanisms in mammals, including metabolism, obesity, inflammation, and reproduction. In this study, we have investigated chemerin influence on alternative mRNA transcription within the porcine luteal cell transcriptome, such as differential expression of long non-coding RNAs (DELs) and their interactions with differentially expressed genes (DEGs), differences in alternative splicing of transcripts (DASs), and allele-specific expression (ASEs) related to the single nucleotide variants (SNVs) frequency. Luteal cells were collected from gilts during the mid-luteal phase of the oestrous cycle. After in vitro culture of cells un-/treated with chemerin, the total RNA was isolated and sequenced using the high-throughput method. The in silico analyses revealed 24 DELs cis interacting with 6 DEGs and trans-correlated with 300 DEGs, 137 DASs events, and 18 ASEs. The results enabled us to analyse metabolic and signalling pathways in detail, providing new insights into the effects of chemerin on the corpus luteum functions related to inflammatory response, leukocyte infiltration, the occurrence of luteotropic and luteolytic signals (leading to apoptosis and/or necroptosis). Validation of the results using qPCR confirmed the predicted expression changes. Chemerin at physiological concentrations significantly modifies the transcription processes in the porcine luteal cells.
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Affiliation(s)
- Karol G. Makowczenko
- Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, 10-719 Olsztyn, Poland; (K.G.M.); (M.K.); (N.S.)
| | - Jan P. Jastrzebski
- Department of Plant Physiology, Genetics and Biotechnology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, 10-719 Olsztyn, Poland;
| | - Lukasz Paukszto
- Department of Botany and Nature Protection, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Plac Lodzki 1, 10-719 Olsztyn, Poland;
| | - Kamil Dobrzyn
- Department of Zoology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 5, 10-719 Olsztyn, Poland;
| | - Marta Kiezun
- Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, 10-719 Olsztyn, Poland; (K.G.M.); (M.K.); (N.S.)
| | - Nina Smolinska
- Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, 10-719 Olsztyn, Poland; (K.G.M.); (M.K.); (N.S.)
| | - Tadeusz Kaminski
- Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, 10-719 Olsztyn, Poland; (K.G.M.); (M.K.); (N.S.)
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