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Fagg WS, Liu N, Braunschweig U, Pereira de Castro K, Chen X, Ditmars F, Widen S, Donohue JP, Modis K, Russell W, Fair JH, Weirauch M, Blencowe B, Garcia-Blanco M. Definition of germ layer cell lineage alternative splicing programs reveals a critical role for Quaking in specifying cardiac cell fate. Nucleic Acids Res 2022; 50:5313-5334. [PMID: 35544276 PMCID: PMC9122611 DOI: 10.1093/nar/gkac327] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 04/14/2022] [Accepted: 04/25/2022] [Indexed: 01/27/2023] Open
Abstract
Alternative splicing is critical for development; however, its role in the specification of the three embryonic germ layers is poorly understood. By performing RNA-Seq on human embryonic stem cells (hESCs) and derived definitive endoderm, cardiac mesoderm, and ectoderm cell lineages, we detect distinct alternative splicing programs associated with each lineage. The most prominent splicing program differences are observed between definitive endoderm and cardiac mesoderm. Integrative multi-omics analyses link each program with lineage-enriched RNA binding protein regulators, and further suggest a widespread role for Quaking (QKI) in the specification of cardiac mesoderm. Remarkably, knockout of QKI disrupts the cardiac mesoderm-associated alternative splicing program and formation of myocytes. These changes arise in part through reduced expression of BIN1 splice variants linked to cardiac development. Mechanistically, we find that QKI represses inclusion of exon 7 in BIN1 pre-mRNA via an exonic ACUAA motif, and this is concomitant with intron removal and cleavage from chromatin. Collectively, our results uncover alternative splicing programs associated with the three germ lineages and demonstrate an important role for QKI in the formation of cardiac mesoderm.
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Affiliation(s)
- W Samuel Fagg
- Department of Surgery, University of Texas Medical Branch, Galveston, TX 77555, USA
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Naiyou Liu
- Department of Surgery, University of Texas Medical Branch, Galveston, TX 77555, USA
| | | | | | - Xiaoting Chen
- Center for Autoimmune Genomics and Etiology (CAGE), Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Frederick S Ditmars
- Department of Surgery, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Steven G Widen
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - John Paul Donohue
- Sinsheimer Labs, RNA Center for Molecular Biology, Department of Molecular, Cell and Developmental Biology, University of California, Santa Cruz, Santa Cruz, CA 95064, USA
| | - Katalin Modis
- Department of Surgery, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - William K Russell
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Jeffrey H Fair
- Department of Surgery, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Matthew T Weirauch
- Center for Autoimmune Genomics and Etiology (CAGE), Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
- Divisions of Biomedical Informatics and Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Benjamin J Blencowe
- Donnelly Centre, University of Toronto, Toronto, ONM5S 3E1, Canada
- Department of Molecular Genetics, University of Toronto, ONM5S 1A8, Canada
| | - Mariano A Garcia-Blanco
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX 77555, USA
- Department of Internal Medicine, University of Texas Medical Branch, Galveston, TX 77555, USA
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Hinrichs AS, Karolchik D, Baertsch R, Barber GP, Bejerano G, Clawson H, Diekhans M, Furey TS, Harte RA, Hsu F, Hillman-Jackson J, Kuhn RM, Pedersen JS, Pohl A, Raney BJ, Rosenbloom KR, Siepel A, Smith KE, Sugnet CW, Sultan-Qurraie A, Thomas DJ, Trumbower H, Weber RJ, Weirauch M, Zweig AS, Haussler D, Kent WJ. The UCSC Genome Browser Database: update 2006. Nucleic Acids Res 2006; 34:D590-8. [PMID: 16381938 PMCID: PMC1347506 DOI: 10.1093/nar/gkj144] [Citation(s) in RCA: 847] [Impact Index Per Article: 47.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The University of California Santa Cruz Genome Browser Database (GBD) contains sequence and annotation data for the genomes of about a dozen vertebrate species and several major model organisms. Genome annotations typically include assembly data, sequence composition, genes and gene predictions, mRNA and expressed sequence tag evidence, comparative genomics, regulation, expression and variation data. The database is optimized to support fast interactive performance with web tools that provide powerful visualization and querying capabilities for mining the data. The Genome Browser displays a wide variety of annotations at all scales from single nucleotide level up to a full chromosome. The Table Browser provides direct access to the database tables and sequence data, enabling complex queries on genome-wide datasets. The Proteome Browser graphically displays protein properties. The Gene Sorter allows filtering and comparison of genes by several metrics including expression data and several gene properties. BLAT and In Silico PCR search for sequences in entire genomes in seconds. These tools are highly integrated and provide many hyperlinks to other databases and websites. The GBD, browsing tools, downloadable data files and links to documentation and other information can be found at .
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Affiliation(s)
- A S Hinrichs
- Center for Biomolecular Science and Engineering, School of Engineering, University of California Santa Cruz (UCSC), Santa Cruz, CA 95064, USA.
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Abstract
The essential oil of ARTEMISIA VESTITA (Compositae) was investigated by GLC, NMR, and mass spectrometry. Main constituents are alpha-, beta-, gamma-himachalene, caryophyllene, germacrene D, himachalol, allohimachalol, alpha-, gamma-atlantone, 1,8-cineole, yomogi alcohol, artemisia, and santolina alcohol and their acetates, and the thujones and thujanols. The characteristic oder of the oil is determined by the freshly smelling, 1, 8-cineole and thujone, and by the woody and sweet note of himachalol and atlantone.
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Affiliation(s)
- P Weyerstahl
- Institut für Organische Chemie, Technische Universität Berlin, Straße des 17. Juni 135, D-1000 Berlin 12, Federal Republic of Germany
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Abstract
The essential oil of Plectranthus rugosus (Labiatae) was investigated by GLC, NMR and mass spectrometry. Main constituents are caryophyllene, germacrene D, alpha-phellandrene, alpha-pinene, caryophyllene oxide, alpha-cadinol, delta-cadinene, limonene, beta-phellandrene, myrcene, and p-cymene.
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Affiliation(s)
- P Weyerstahl
- Institut für Organische Chemie, Technische Universität Berlin, Federal Republic of Germany
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