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Van Oeteren I, Achten R, Ghekiere O, Koopman P, Van Leuven O, Timmermans PJ. Hidden in plain sight: complex tachycardias in a young thalassaemia patient. Acta Cardiol 2023; 78:1057-1060. [PMID: 37318083 DOI: 10.1080/00015385.2023.2223014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 05/10/2023] [Accepted: 05/31/2023] [Indexed: 06/16/2023]
Affiliation(s)
| | | | | | | | - O Van Leuven
- Universitair Ziekenhuis Antwerpen (UZA), Belgium
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Overman J, Fontaine F, Moustaqil M, Mittal D, Sierecki E, Sacilotto N, Zuegg J, Robertson AAB, Holmes K, Salim AA, Mamidyala S, Butler MS, Robinson AS, Lesieur E, Johnston W, Alexandrov K, Black BL, Hogan BM, De Val S, Capon RJ, Carroll JS, Bailey TL, Koopman P, Jauch R, Cooper MA, Gambin Y, Francois M. Correction: Pharmacological targeting of the transcription factor SOX18 delays breast cancer in mice. eLife 2023; 12:e90408. [PMID: 37551662 PMCID: PMC10409503 DOI: 10.7554/elife.90408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/09/2023] Open
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Ayers KL, Eggers S, Rollo BN, Smith KR, Davidson NM, Siddall NA, Zhao L, Bowles J, Weiss K, Zanni G, Burglen L, Ben-Shachar S, Rosensaft J, Raas-Rothschild A, Jørgensen A, Schittenhelm RB, Huang C, Robevska G, van den Bergen J, Casagranda F, Cyza J, Pachernegg S, Wright DK, Bahlo M, Oshlack A, O'Brien TJ, Kwan P, Koopman P, Hime GR, Girard N, Hoffmann C, Shilon Y, Zung A, Bertini E, Milh M, Ben Rhouma B, Belguith N, Bashamboo A, McElreavey K, Banne E, Weintrob N, BenZeev B, Sinclair AH. Author Correction: Variants in SART3 cause a spliceosomopathy characterised by failure of testis development and neuronal defects. Nat Commun 2023; 14:3566. [PMID: 37322043 PMCID: PMC10272200 DOI: 10.1038/s41467-023-39372-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023] Open
Affiliation(s)
- Katie L Ayers
- The Murdoch Children's Research Institute, Melbourne, VIC, Australia.
- Department of Paediatrics, The University of Melbourne, Melbourne, VIC, Australia.
| | - Stefanie Eggers
- The Victorian Clinical Genetics Services, Melbourne, VIC, Australia
| | - Ben N Rollo
- Department of Neuroscience, Central Clinical School, Monash University, Alfred Centre, Melbourne, VIC, Australia
| | - Katherine R Smith
- Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia
| | - Nadia M Davidson
- Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia
- School of BioSciences, Faculty of Science, University of Melbourne, Melbourne, VIC, Australia
- Department of Medical Biology, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, VIC, Australia
| | - Nicole A Siddall
- Department of Anatomy and Physiology, The University of Melbourne, Melbourne, VIC, Australia
| | - Liang Zhao
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Josephine Bowles
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
- School of Biomedical Sciences, The University of Queensland, Brisbane, QLD, Australia
| | - Karin Weiss
- Genetics Institute, Rambam Health Care Campus, Rappaport Faculty of Medicine, Institute of Technology, Haifa, Israel
| | - Ginevra Zanni
- Unit of Muscular and Neurodegenerative Disorders and Unit of Developmental Neurology, Department of Neurosciences, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Lydie Burglen
- Centre de Référence des Malformations et Maladies Congénitales du Cervelet, Et Laboratoire de Neurogénétique Moléculaire, Département de Génétique et Embryologie Médicale, APHP. Sorbonne Université, Hôpital Trousseau, Paris, France
- Developmental Brain Disorders Laboratory, Imagine Institute, INSERM UMR 1163, Paris, France
| | - Shay Ben-Shachar
- Genetic Institute, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Jenny Rosensaft
- Genetics Institute, Kaplan Medical Center, Hebrew University Hadassah Medical School, Rehovot, 76100, Israel
| | - Annick Raas-Rothschild
- Edmond and Lily Safra Children's Hospital, Chaim Sheba Medical Center, Ramat Gan, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Anne Jørgensen
- Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Ralf B Schittenhelm
- Monash Proteomics and Metabolomics Facility, Biomedicine Discovery Institute, Department of Biochemistry and Molecular Biology, Monash University, Clayton, VIC, Australia
| | - Cheng Huang
- Monash Proteomics and Metabolomics Facility, Biomedicine Discovery Institute, Department of Biochemistry and Molecular Biology, Monash University, Clayton, VIC, Australia
| | - Gorjana Robevska
- The Murdoch Children's Research Institute, Melbourne, VIC, Australia
| | | | - Franca Casagranda
- Department of Anatomy and Physiology, The University of Melbourne, Melbourne, VIC, Australia
| | - Justyna Cyza
- The Murdoch Children's Research Institute, Melbourne, VIC, Australia
| | - Svenja Pachernegg
- The Murdoch Children's Research Institute, Melbourne, VIC, Australia
- Department of Paediatrics, The University of Melbourne, Melbourne, VIC, Australia
| | - David K Wright
- Department of Neuroscience, Central Clinical School, Monash University, Alfred Centre, Melbourne, VIC, Australia
| | - Melanie Bahlo
- Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia
- Department of Medical Biology, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, VIC, Australia
| | - Alicia Oshlack
- The Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- School of Mathematics and Statistics, The University of Melbourne, Melbourne, VIC, Australia
| | - Terrence J O'Brien
- Department of Neuroscience, Central Clinical School, Monash University, Alfred Centre, Melbourne, VIC, Australia
- Department of Medicine, The Royal Melbourne Hospital, The University of Melbourne, Melbourne, VIC, Australia
| | - Patrick Kwan
- Department of Neuroscience, Central Clinical School, Monash University, Alfred Centre, Melbourne, VIC, Australia
- Department of Medicine, The Royal Melbourne Hospital, The University of Melbourne, Melbourne, VIC, Australia
| | - Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Gary R Hime
- Department of Anatomy and Physiology, The University of Melbourne, Melbourne, VIC, Australia
| | - Nadine Girard
- Department of Pediatric Neurology, Aix-Marseille Université, APHM, Timone Hospital, Marseille, France
| | - Chen Hoffmann
- Radiology Department, Sheba medical Centre, Tel Aviv, Israel
| | - Yuval Shilon
- Kaplan Medical Center, Hebrew University Hadassah Medical School, Rehovot, 76100, Israel
| | - Amnon Zung
- Pediatrics Department, Kaplan Medical Center, Rehovot, 76100, Israel
- Faculty of Medicine, Hebrew University of Jerusalem, Hadassah Medical School, Jerusalem, Israel
| | - Enrico Bertini
- Unit of Muscular and Neurodegenerative Disorders and Unit of Developmental Neurology, Department of Neurosciences, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Mathieu Milh
- Department of Pediatric Neurology, Aix-Marseille Université, APHM, Timone Hospital, Marseille, France
| | - Bochra Ben Rhouma
- Higher Institute of Nursing Sciences of Gabes, University of Gabes, Gabes, Tunisia
- Laboratory of Human Molecular Genetics, Faculty of Medicine of Sfax, Sfax University, Sfax, Tunisia
| | - Neila Belguith
- Laboratory of Human Molecular Genetics, Faculty of Medicine of Sfax, Sfax University, Sfax, Tunisia
- Department of Congenital and Hereditary Diseases, Charles Nicolle Hospital, Tunis, Tunisia
| | - Anu Bashamboo
- Institut Pasteur, Université de Paris, CNRS UMR3738, Human Developmental Genetics, 75015, Paris, France
| | - Kenneth McElreavey
- Institut Pasteur, Université de Paris, CNRS UMR3738, Human Developmental Genetics, 75015, Paris, France
| | - Ehud Banne
- Genetics Institute, Kaplan Medical Center, Hebrew University Hadassah Medical School, Rehovot, 76100, Israel
- The Rina Mor Genetic Institute, Wolfson Medical Center, Holon, 58100, Israel
| | - Naomi Weintrob
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
- Pediatric Endocrinology Unit, Dana-Dwek Children's Hospital, Tel Aviv Medical Center, Tel Aviv, Israel
| | | | - Andrew H Sinclair
- The Murdoch Children's Research Institute, Melbourne, VIC, Australia
- Department of Paediatrics, The University of Melbourne, Melbourne, VIC, Australia
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Ayers KL, Eggers S, Rollo BN, Smith KR, Davidson NM, Siddall NA, Zhao L, Bowles J, Weiss K, Zanni G, Burglen L, Ben-Shachar S, Rosensaft J, Raas-Rothschild A, Jørgensen A, Schittenhelm RB, Huang C, Robevska G, van den Bergen J, Casagranda F, Cyza J, Pachernegg S, Wright DK, Bahlo M, Oshlack A, O'Brien TJ, Kwan P, Koopman P, Hime GR, Girard N, Hoffmann C, Shilon Y, Zung A, Bertini E, Milh M, Ben Rhouma B, Belguith N, Bashamboo A, McElreavey K, Banne E, Weintrob N, BenZeev B, Sinclair AH. Variants in SART3 cause a spliceosomopathy characterised by failure of testis development and neuronal defects. Nat Commun 2023; 14:3403. [PMID: 37296101 PMCID: PMC10256788 DOI: 10.1038/s41467-023-39040-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Accepted: 05/26/2023] [Indexed: 06/12/2023] Open
Abstract
Squamous cell carcinoma antigen recognized by T cells 3 (SART3) is an RNA-binding protein with numerous biological functions including recycling small nuclear RNAs to the spliceosome. Here, we identify recessive variants in SART3 in nine individuals presenting with intellectual disability, global developmental delay and a subset of brain anomalies, together with gonadal dysgenesis in 46,XY individuals. Knockdown of the Drosophila orthologue of SART3 reveals a conserved role in testicular and neuronal development. Human induced pluripotent stem cells carrying patient variants in SART3 show disruption to multiple signalling pathways, upregulation of spliceosome components and demonstrate aberrant gonadal and neuronal differentiation in vitro. Collectively, these findings suggest that bi-allelic SART3 variants underlie a spliceosomopathy which we tentatively propose be termed INDYGON syndrome (Intellectual disability, Neurodevelopmental defects and Developmental delay with 46,XY GONadal dysgenesis). Our findings will enable additional diagnoses and improved outcomes for individuals born with this condition.
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Affiliation(s)
- Katie L Ayers
- The Murdoch Children's Research Institute, Melbourne, Australia.
- Department of Paediatrics, The University of Melbourne, Melbourne, Australia.
| | - Stefanie Eggers
- The Victorian Clinical Genetics Services, Melbourne, Australia
| | - Ben N Rollo
- Department of Neuroscience, Central Clinical School, Monash University, Alfred Centre, Melbourne, Australia
| | - Katherine R Smith
- Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia
| | - Nadia M Davidson
- Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia
- School of BioSciences, Faculty of Science, University of Melbourne, Melbourne, Australia
- Department of Medical Biology, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, Australia
| | - Nicole A Siddall
- Department of Anatomy and Physiology, The University of Melbourne, Melbourne, Australia
| | - Liang Zhao
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Josephine Bowles
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
- School of Biomedical Sciences, The University of Queensland, Brisbane, QLD, Australia
| | - Karin Weiss
- Genetics Institute, Rambam Health Care Campus, Rappaport Faculty of Medicine, Institute of Technology, Haifa, Israel
| | - Ginevra Zanni
- Unit of Muscular and Neurodegenerative Disorders and Unit of Developmental Neurology, Department of Neurosciences, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Lydie Burglen
- Centre de Référence des Malformations et Maladies Congénitales du Cervelet, Et Laboratoire de Neurogénétique Moléculaire, Département de Génétique et Embryologie Médicale, APHP. Sorbonne Université, Hôpital Trousseau, Paris, France
- Developmental Brain Disorders Laboratory, Imagine Institute, INSERM UMR 1163, Paris, France
| | - Shay Ben-Shachar
- Genetic Institute, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Jenny Rosensaft
- Genetics Institute, Kaplan Medical Center, Hebrew University Hadassah Medical School, Rehovot, 76100, Israel
| | - Annick Raas-Rothschild
- Edmond and Lily Safra Children's Hospital, Chaim Sheba Medical Center, Ramat Gan, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Anne Jørgensen
- Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Ralf B Schittenhelm
- Monash Proteomics and Metabolomics Facility, Biomedicine Discovery Institute, Department of Biochemistry and Molecular Biology, Monash University, Clayton, Australia
| | - Cheng Huang
- Monash Proteomics and Metabolomics Facility, Biomedicine Discovery Institute, Department of Biochemistry and Molecular Biology, Monash University, Clayton, Australia
| | | | | | - Franca Casagranda
- Department of Anatomy and Physiology, The University of Melbourne, Melbourne, Australia
| | - Justyna Cyza
- The Murdoch Children's Research Institute, Melbourne, Australia
| | - Svenja Pachernegg
- The Murdoch Children's Research Institute, Melbourne, Australia
- Department of Paediatrics, The University of Melbourne, Melbourne, Australia
| | - David K Wright
- Department of Neuroscience, Central Clinical School, Monash University, Alfred Centre, Melbourne, Australia
| | - Melanie Bahlo
- Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia
- Department of Medical Biology, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, Australia
| | - Alicia Oshlack
- The Peter MacCallum Cancer Centre, Melbourne, Australia
- School of Mathematics and Statistics, The University of Melbourne, Melbourne, Australia
| | - Terrence J O'Brien
- Department of Neuroscience, Central Clinical School, Monash University, Alfred Centre, Melbourne, Australia
- Department of Medicine, The Royal Melbourne Hospital, The University of Melbourne, Melbourne, Australia
| | - Patrick Kwan
- Department of Neuroscience, Central Clinical School, Monash University, Alfred Centre, Melbourne, Australia
- Department of Medicine, The Royal Melbourne Hospital, The University of Melbourne, Melbourne, Australia
| | - Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Gary R Hime
- Department of Anatomy and Physiology, The University of Melbourne, Melbourne, Australia
| | - Nadine Girard
- Aix-Marseille Université, APHM. Department of Pediatric Neurology, Timone Hospital, Marseille, France
| | - Chen Hoffmann
- Radiology Department, Sheba medical Centre, Tel Aviv, Israel
| | - Yuval Shilon
- Kaplan Medical Center, Hebrew University Hadassah Medical School, Rehovot, 76100, Israel
| | - Amnon Zung
- Pediatrics Department, Kaplan Medical Center, Rehovot, 76100, Israel
- Faculty of Medicine, Hebrew University of Jerusalem, Hadassah Medical School, Jerusalem, Israel
| | - Enrico Bertini
- Unit of Muscular and Neurodegenerative Disorders and Unit of Developmental Neurology, Department of Neurosciences, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Mathieu Milh
- Aix-Marseille Université, APHM. Department of Pediatric Neurology, Timone Hospital, Marseille, France
| | - Bochra Ben Rhouma
- Higher Institute of Nursing Sciences of Gabes, University of Gabes, Gabes, Tunisia
- Laboratory of Human Molecular Genetics, Faculty of Medicine of Sfax, Sfax University, Sfax, Tunisia
| | - Neila Belguith
- Laboratory of Human Molecular Genetics, Faculty of Medicine of Sfax, Sfax University, Sfax, Tunisia
- Department of Congenital and Hereditary Diseases, Charles Nicolle Hospital, Tunis, Tunisia
| | - Anu Bashamboo
- Institut Pasteur, Université de Paris, CNRS UMR3738, Human Developmental Genetics, 75015, Paris, France
| | - Kenneth McElreavey
- Institut Pasteur, Université de Paris, CNRS UMR3738, Human Developmental Genetics, 75015, Paris, France
| | - Ehud Banne
- Genetics Institute, Kaplan Medical Center, Hebrew University Hadassah Medical School, Rehovot, 76100, Israel
- The Rina Mor Genetic Institute, Wolfson Medical Center, Holon, 58100, Israel
| | - Naomi Weintrob
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
- Pediatric Endocrinology Unit, Dana-Dwek Children's Hospital, Tel Aviv Medical Center, Tel Aviv, Israel
| | | | - Andrew H Sinclair
- The Murdoch Children's Research Institute, Melbourne, Australia
- Department of Paediatrics, The University of Melbourne, Melbourne, Australia
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Bird AD, Frost ER, Bagheri-Fam S, Croft BM, Ryan JM, Zhao L, Koopman P, Harley VR. Somatic FGFR2 is Required for Germ Cell Maintenance in the Mouse Ovary. Endocrinology 2023; 164:7036407. [PMID: 36786658 DOI: 10.1210/endocr/bqad031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 02/01/2023] [Accepted: 02/14/2023] [Indexed: 02/15/2023]
Abstract
During sex determination in the mouse, fibroblast growth factor 9 signals through the fibroblast growth factor receptor 2c isoform (FGFR2c) to trigger Sertoli cell and testis development from 11.5 days post coitum (dpc). In the XX gonad, the FOXL2 and WNT4/RSPO1 pathways drive granulosa cell and ovarian development. The function of FGFR2 in the developing ovary, and whether FGFR2 is required in the testis after sex determination, is not clear. In fetal mouse gonads from 12.5 dpc, FGFR2 shows sexually dimorphic expression. In XX gonads, FGFR2c is coexpressed with FOXL2 in pregranulosa cells, whereas XY gonads show FGFR2b expression in germ cells. Deletion of Fgfr2c in XX mice led to a marked decrease/absence of germ cells by 13.5 dpc in the ovary. This indicates that FGFR2c in the somatic pregranulosa cells is required for the maintenance of germ cells. Surprisingly, on the Fgfr2c-/- background, the germ cell phenotype could be rescued by ablation of Foxl2, suggesting a novel mechanism whereby FGFR2 and FOXL2 act antagonistically during germ cell development. Consistent with low/absent FGFR2 expression in the Sertoli cells of 12.5 and 13.5 dpc XY gonads, XY AMH:Cre; Fgfr2flox/flox mice showed normal testis morphology and structures during fetal development and in adulthood. Thus, FGFR2 is not essential for maintaining Sertoli cell fate after sex determination. Combined, these data show that FGFR2 is not necessary for Sertoli cell function after sex determination but does play an important role in the ovary.
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Affiliation(s)
- Anthony D Bird
- Department of Anatomy and Neuroscience, The University of Melbourne, Melbourne, 3010, Australia
- Sex Development Laboratory, Hudson Institute of Medical Research, Monash Medical Centre, Melbourne, 3168, Australia
| | - Emily R Frost
- Sex Development Laboratory, Hudson Institute of Medical Research, Monash Medical Centre, Melbourne, 3168, Australia
- Department of Molecular and Translational Science, Monash University, Clayton, VIC, 3168, Australia
| | - Stefan Bagheri-Fam
- Sex Development Laboratory, Hudson Institute of Medical Research, Monash Medical Centre, Melbourne, 3168, Australia
- Department of Molecular and Translational Science, Monash University, Clayton, VIC, 3168, Australia
| | - Brittany M Croft
- Sex Development Laboratory, Hudson Institute of Medical Research, Monash Medical Centre, Melbourne, 3168, Australia
- Department of Molecular and Translational Science, Monash University, Clayton, VIC, 3168, Australia
| | - Janelle M Ryan
- Sex Development Laboratory, Hudson Institute of Medical Research, Monash Medical Centre, Melbourne, 3168, Australia
- Department of Molecular and Translational Science, Monash University, Clayton, VIC, 3168, Australia
| | - Liang Zhao
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, 4072, Australia
| | - Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, 4072, Australia
| | - Vincent R Harley
- Sex Development Laboratory, Hudson Institute of Medical Research, Monash Medical Centre, Melbourne, 3168, Australia
- Department of Molecular and Translational Science, Monash University, Clayton, VIC, 3168, Australia
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, 3168, Australia
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Thomson E, Tran M, Robevska G, Ayers K, van der Bergen J, Gopalakrishnan Bhaskaran P, Haan E, Cereghini S, Vash-Margita A, Margetts M, Hensley A, Nguyen Q, Sinclair A, Koopman P, Pelosi E. Functional genomics analysis identifies loss of HNF1B function as a cause of Mayer-Rokitansky-Küster-Hauser syndrome. Hum Mol Genet 2023; 32:1032-1047. [PMID: 36282544 PMCID: PMC9990990 DOI: 10.1093/hmg/ddac262] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 10/04/2022] [Accepted: 10/17/2022] [Indexed: 11/12/2022] Open
Abstract
Mayer-Rokitansky-Küster-Hauser (MRKH) syndrome is a congenital condition characterized by aplasia or hypoplasia of the uterus and vagina in women with a 46,XX karyotype. This condition can occur as type I when isolated or as type II when associated with extragenital anomalies including kidney and skeletal abnormalities. The genetic basis of MRKH syndrome remains unexplained and several candidate genes have been proposed to play a role in its etiology, including HNF1B, LHX1 and WNT4. Here, we conducted a microarray analysis of 13 women affected by MRKH syndrome, resulting in the identification of chromosomal changes, including the deletion at 17q12, which contains both HNF1B and LHX1. We focused on HNF1B for further investigation due to its known association with, but unknown etiological role in, MRKH syndrome. We ablated Hnf1b specifically in the epithelium of the Müllerian ducts in mice and found that this caused hypoplastic development of the uterus, as well as kidney anomalies, closely mirroring the MRKH type II phenotype. Using single-cell RNA sequencing of uterine tissue in the Hnf1b-ablated embryos, we analyzed the molecules and pathways downstream of Hnf1b, revealing a dysregulation of processes associated with cell proliferation, migration and differentiation. Thus, we establish that loss of Hnf1b function leads to an MRKH phenotype and generate the first mouse model of MRKH syndrome type II. Our results support the investigation of HNF1B in clinical genetic settings of MRKH syndrome and shed new light on the molecular mechanisms underlying this poorly understood condition in women's reproductive health.
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Affiliation(s)
- Ella Thomson
- Centre for Clinical Research, The University of Queensland, Brisbane, QLD, Australia
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Minh Tran
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Gorjana Robevska
- Reproductive Development, Murdoch Children's Research Institute, Melbourne, VIC, Australia
| | - Katie Ayers
- Reproductive Development, Murdoch Children's Research Institute, Melbourne, VIC, Australia
- Department of Paediatrics, The University of Melbourne, Melbourne, VIC, Australia
| | - Jocelyn van der Bergen
- Reproductive Development, Murdoch Children's Research Institute, Melbourne, VIC, Australia
| | | | - Eric Haan
- Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, SA, Australia
| | - Silvia Cereghini
- Institut de Biologie Paris-Seine, Sorbonne Université, Paris, France
| | - Alla Vash-Margita
- Division of Pediatric and Adolescent Gynecology, Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
| | - Miranda Margetts
- Center for American Indian and Rural Health Equity, Montana State University, Bozeman, MT, USA
| | | | - Quan Nguyen
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Andrew Sinclair
- Reproductive Development, Murdoch Children's Research Institute, Melbourne, VIC, Australia
- Department of Paediatrics, The University of Melbourne, Melbourne, VIC, Australia
| | | | - Emanuele Pelosi
- To whom correspondence should be addressed. Tel: +61 7 3346 6073;
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Zhao L, Thomson E, Ng ET, Longmuss E, Svingen T, Bagheri-Fam S, Quinn A, Harley VR, Harrison LC, Pelosi E, Koopman P. Functional Analysis of Mmd2 and Related PAQR Genes During Sex Determination in Mice. Sex Dev 2023; 16:270-282. [PMID: 35306493 DOI: 10.1159/000522668] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Accepted: 02/15/2022] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Sex determination in eutherian mammals is controlled by the Y-linked gene Sry, which drives the formation of testes in male embryos. Despite extensive study, the genetic steps linking Sry action and male sex determination remain largely unknown. Here, we focused on Mmd2, a gene that encodes a member of the progestin and adipoQ receptor (PAQR) family. Mmd2 is expressed during the sex-determining period in XY but not XX gonads, suggesting a specific role in testis development. METHODS We used CRISPR to generate mouse strains deficient in Mmd2 and its 2 closely related PAQR family members, Mmd and Paqr8, which are also expressed during testis development. Following characterization of Mmd2 expression in the developing testis, we studied sex determination in embryos from single knockout as well as Mmd2;Mmd and Mmd2;Paqr8 double knockout lines using quantitative RT-PCR and immunofluorescence. RESULTS Analysis of knockout mice deficient in Sox9 and Nr5a1 revealed that Mmd2 operates downstream of these known sex-determining genes. However, fetal testis development progressed normally in Mmd2-null embryos. To determine if other genes might have compensated for the loss of Mmd2, we analyzed Paqr8 and Mmd-null embryos and confirmed that in both knockout lines, sex determination occurred normally. Finally, we generated Mmd2;Mmd and Mmd2;Paqr8 double-null embryos and again observed normal testis development. DISCUSSION These results may reflect functional redundancy among PAQR factors, or their dispensability in gonadal development. Our findings highlight the difficulties involved in identifying genes with a functional role in sex determination and gonadal development through expression screening and loss-of-function analyses of individual candidate genes and may help to explain the paucity of genes in which variations have been found to cause human disorders/differences of sex development.
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Affiliation(s)
- Liang Zhao
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia
| | - Ella Thomson
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia.,Centre for Clinical Research, The University of Queensland, Royal Brisbane & Women's Hospital, Herston, Queensland, Australia
| | - Ee T Ng
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia
| | - Enya Longmuss
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia
| | - Terje Svingen
- National Food Institute, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Stefan Bagheri-Fam
- Centre for Endocrinology and Metabolism, Hudson Institute of Medical Research, Monash Medical Centre, Melbourne, Victoria, Australia
| | - Alexander Quinn
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia
| | - Vincent R Harley
- Centre for Endocrinology and Metabolism, Hudson Institute of Medical Research, Monash Medical Centre, Melbourne, Victoria, Australia
| | - Leonard C Harrison
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
| | - Emanuele Pelosi
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia.,Centre for Clinical Research, The University of Queensland, Royal Brisbane & Women's Hospital, Herston, Queensland, Australia
| | - Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia
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Proietti M, Romiti GF, Vitolo M, Harrison SL, Lane DA, Fauchier L, Marin F, Näbauer M, Potpara TS, Dan GA, Maggioni AP, Cesari M, Boriani G, Lip GYH, Ekmekçiu U, Paparisto V, Tase M, Gjergo H, Dragoti J, Goda A, Ciutea M, Ahadi N, el Husseini Z, Raepers M, Leroy J, Haushan P, Jourdan A, Lepiece C, Desteghe L, Vijgen J, Koopman P, Van Genechten G, Heidbuchel H, Boussy T, De Coninck M, Van Eeckhoutte H, Bouckaert N, Friart A, Boreux J, Arend C, Evrard P, Stefan L, Hoffer E, Herzet J, Massoz M, Celentano C, Sprynger M, Pierard L, Melon P, Van Hauwaert B, Kuppens C, Faes D, Van Lier D, Van Dorpe A, Gerardy A, Deceuninck O, Xhaet O, Dormal F, Ballant E, Blommaert D, Yakova D, Hristov M, Yncheva T, Stancheva N, Tisheva S, Tokmakova M, Nikolov F, Gencheva D, Shalganov T, Kunev B, Stoyanov M, Marchov D, Gelev V, Traykov V, Kisheva A, Tsvyatkov H, Shtereva R, Bakalska-Georgieva S, Slavcheva S, Yotov Y, Kubíčková M, Marni Joensen A, Gammelmark A, Hvilsted Rasmussen L, Dinesen P, Riahi S, Krogh Venø S, Sorensen B, Korsgaard A, Andersen K, Fragtrup Hellum C, Svenningsen A, Nyvad O, Wiggers P, May O, Aarup A, Graversen B, Jensen L, Andersen M, Svejgaard M, Vester S, Hansen S, Lynggaard V, Ciudad M, Vettus R, Muda P, Maestre A, Castaño S, Cheggour S, Poulard J, Mouquet V, Leparrée S, Bouet J, Taieb J, Doucy A, Duquenne H, Furber A, Dupuis J, Rautureau J, Font M, Damiano P, Lacrimini M, Abalea J, Boismal S, Menez T, Mansourati J, Range G, Gorka H, Laure C, Vassalière C, Elbaz N, Lellouche N, Djouadi K, Roubille F, Dietz D, Davy J, Granier M, Winum P, Leperchois-Jacquey C, Kassim H, Marijon E, Le Heuzey J, Fedida J, Maupain C, Himbert C, Gandjbakhch E, Hidden-Lucet F, Duthoit G, Badenco N, Chastre T, Waintraub X, Oudihat M, Lacoste J, Stephan C, Bader H, Delarche N, Giry L, Arnaud D, Lopez C, Boury F, Brunello I, Lefèvre M, Mingam R, Haissaguerre M, Le Bidan M, Pavin D, Le Moal V, Leclercq C, Piot O, Beitar T, Martel I, Schmid A, Sadki N, Romeyer-Bouchard C, Da Costa A, Arnault I, Boyer M, Piat C, Fauchier L, Lozance N, Nastevska S, Doneva A, Fortomaroska Milevska B, Sheshoski B, Petroska K, Taneska N, Bakrecheski N, Lazarovska K, Jovevska S, Ristovski V, Antovski A, Lazarova E, Kotlar I, Taleski J, Poposka L, Kedev S, Zlatanovik N, Jordanova S, Bajraktarova Proseva T, Doncovska S, Maisuradze D, Esakia A, Sagirashvili E, Lartsuliani K, Natelashvili N, Gumberidze N, Gvenetadze R, Etsadashvili K, Gotonelia N, Kuridze N, Papiashvili G, Menabde I, Glöggler S, Napp A, Lebherz C, Romero H, Schmitz K, Berger M, Zink M, Köster S, Sachse J, Vonderhagen E, Soiron G, Mischke K, Reith R, Schneider M, Rieker W, Boscher D, Taschareck A, Beer A, Oster D, Ritter O, Adamczewski J, Walter S, Frommhold A, Luckner E, Richter J, Schellner M, Landgraf S, Bartholome S, Naumann R, Schoeler J, Westermeier D, William F, Wilhelm K, Maerkl M, Oekinghaus R, Denart M, Kriete M, Tebbe U, Scheibner T, Gruber M, Gerlach A, Beckendorf C, Anneken L, Arnold M, Lengerer S, Bal Z, Uecker C, Förtsch H, Fechner S, Mages V, Martens E, Methe H, Schmidt T, Schaeffer B, Hoffmann B, Moser J, Heitmann K, Willems S, Willems S, Klaus C, Lange I, Durak M, Esen E, Mibach F, Mibach H, Utech A, Gabelmann M, Stumm R, Ländle V, Gartner C, Goerg C, Kaul N, Messer S, Burkhardt D, Sander C, Orthen R, Kaes S, Baumer A, Dodos F, Barth A, Schaeffer G, Gaertner J, Winkler J, Fahrig A, Aring J, Wenzel I, Steiner S, Kliesch A, Kratz E, Winter K, Schneider P, Haag A, Mutscher I, Bosch R, Taggeselle J, Meixner S, Schnabel A, Shamalla A, Hötz H, Korinth A, Rheinert C, Mehltretter G, Schön B, Schön N, Starflinger A, Englmann E, Baytok G, Laschinger T, Ritscher G, Gerth A, Dechering D, Eckardt L, Kuhlmann M, Proskynitopoulos N, Brunn J, Foth K, Axthelm C, Hohensee H, Eberhard K, Turbanisch S, Hassler N, Koestler A, Stenzel G, Kschiwan D, Schwefer M, Neiner S, Hettwer S, Haeussler-Schuchardt M, Degenhardt R, Sennhenn S, Steiner S, Brendel M, Stoehr A, Widjaja W, Loehndorf S, Logemann A, Hoskamp J, Grundt J, Block M, Ulrych R, Reithmeier A, Panagopoulos V, Martignani C, Bernucci D, Fantecchi E, Diemberger I, Ziacchi M, Biffi M, Cimaglia P, Frisoni J, Boriani G, Giannini I, Boni S, Fumagalli S, Pupo S, Di Chiara A, Mirone P, Fantecchi E, Boriani G, Pesce F, Zoccali C, Malavasi VL, Mussagaliyeva A, Ahyt B, Salihova Z, Koshum-Bayeva K, Kerimkulova A, Bairamukova A, Mirrakhimov E, Lurina B, Zuzans R, Jegere S, Mintale I, Kupics K, Jubele K, Erglis A, Kalejs O, Vanhear K, Burg M, Cachia M, Abela E, Warwicker S, Tabone T, Xuereb R, Asanovic D, Drakalovic D, Vukmirovic M, Pavlovic N, Music L, Bulatovic N, Boskovic A, Uiterwaal H, Bijsterveld N, De Groot J, Neefs J, van den Berg N, Piersma F, Wilde A, Hagens V, Van Es J, Van Opstal J, Van Rennes B, Verheij H, Breukers W, Tjeerdsma G, Nijmeijer R, Wegink D, Binnema R, Said S, Erküner Ö, Philippens S, van Doorn W, Crijns H, Szili-Torok T, Bhagwandien R, Janse P, Muskens A, van Eck M, Gevers R, van der Ven N, Duygun A, Rahel B, Meeder J, Vold A, Holst Hansen C, Engset I, Atar D, Dyduch-Fejklowicz B, Koba E, Cichocka M, Sokal A, Kubicius A, Pruchniewicz E, Kowalik-Sztylc A, Czapla W, Mróz I, Kozlowski M, Pawlowski T, Tendera M, Winiarska-Filipek A, Fidyk A, Slowikowski A, Haberka M, Lachor-Broda M, Biedron M, Gasior Z, Kołodziej M, Janion M, Gorczyca-Michta I, Wozakowska-Kaplon B, Stasiak M, Jakubowski P, Ciurus T, Drozdz J, Simiera M, Zajac P, Wcislo T, Zycinski P, Kasprzak J, Olejnik A, Harc-Dyl E, Miarka J, Pasieka M, Ziemińska-Łuć M, Bujak W, Śliwiński A, Grech A, Morka J, Petrykowska K, Prasał M, Hordyński G, Feusette P, Lipski P, Wester A, Streb W, Romanek J, Woźniak P, Chlebuś M, Szafarz P, Stanik W, Zakrzewski M, Kaźmierczak J, Przybylska A, Skorek E, Błaszczyk H, Stępień M, Szabowski S, Krysiak W, Szymańska M, Karasiński J, Blicharz J, Skura M, Hałas K, Michalczyk L, Orski Z, Krzyżanowski K, Skrobowski A, Zieliński L, Tomaszewska-Kiecana M, Dłużniewski M, Kiliszek M, Peller M, Budnik M, Balsam P, Opolski G, Tymińska A, Ozierański K, Wancerz A, Borowiec A, Majos E, Dabrowski R, Szwed H, Musialik-Lydka A, Leopold-Jadczyk A, Jedrzejczyk-Patej E, Koziel M, Lenarczyk R, Mazurek M, Kalarus Z, Krzemien-Wolska K, Starosta P, Nowalany-Kozielska E, Orzechowska A, Szpot M, Staszel M, Almeida S, Pereira H, Brandão Alves L, Miranda R, Ribeiro L, Costa F, Morgado F, Carmo P, Galvao Santos P, Bernardo R, Adragão P, Ferreira da Silva G, Peres M, Alves M, Leal M, Cordeiro A, Magalhães P, Fontes P, Leão S, Delgado A, Costa A, Marmelo B, Rodrigues B, Moreira D, Santos J, Santos L, Terchet A, Darabantiu D, Mercea S, Turcin Halka V, Pop Moldovan A, Gabor A, Doka B, Catanescu G, Rus H, Oboroceanu L, Bobescu E, Popescu R, Dan A, Buzea A, Daha I, Dan G, Neuhoff I, Baluta M, Ploesteanu R, Dumitrache N, Vintila M, Daraban A, Japie C, Badila E, Tewelde H, Hostiuc M, Frunza S, Tintea E, Bartos D, Ciobanu A, Popescu I, Toma N, Gherghinescu C, Cretu D, Patrascu N, Stoicescu C, Udroiu C, Bicescu G, Vintila V, Vinereanu D, Cinteza M, Rimbas R, Grecu M, Cozma A, Boros F, Ille M, Tica O, Tor R, Corina A, Jeewooth A, Maria B, Georgiana C, Natalia C, Alin D, Dinu-Andrei D, Livia M, Daniela R, Larisa R, Umaar S, Tamara T, Ioachim Popescu M, Nistor D, Sus I, Coborosanu O, Alina-Ramona N, Dan R, Petrescu L, Ionescu G, Popescu I, Vacarescu C, Goanta E, Mangea M, Ionac A, Mornos C, Cozma D, Pescariu S, Solodovnicova E, Soldatova I, Shutova J, Tjuleneva L, Zubova T, Uskov V, Obukhov D, Rusanova G, Soldatova I, Isakova N, Odinsova S, Arhipova T, Kazakevich E, Serdechnaya E, Zavyalova O, Novikova T, Riabaia I, Zhigalov S, Drozdova E, Luchkina I, Monogarova Y, Hegya D, Rodionova L, Rodionova L, Nevzorova V, Soldatova I, Lusanova O, Arandjelovic A, Toncev D, Milanov M, Sekularac N, Zdravkovic M, Hinic S, Dimkovic S, Acimovic T, Saric J, Polovina M, Potpara T, Vujisic-Tesic B, Nedeljkovic M, Zlatar M, Asanin M, Vasic V, Popovic Z, Djikic D, Sipic M, Peric V, Dejanovic B, Milosevic N, Stevanovic A, Andric A, Pencic B, Pavlovic-Kleut M, Celic V, Pavlovic M, Petrovic M, Vuleta M, Petrovic N, Simovic S, Savovic Z, Milanov S, Davidovic G, Iric-Cupic V, Simonovic D, Stojanovic M, Stojanovic S, Mitic V, Ilic V, Petrovic D, Deljanin Ilic M, Ilic S, Stoickov V, Markovic S, Kovacevic S, García Fernandez A, Perez Cabeza A, Anguita M, Tercedor Sanchez L, Mau E, Loayssa J, Ayarra M, Carpintero M, Roldán Rabadan I, Leal M, Gil Ortega M, Tello Montoliu A, Orenes Piñero E, Manzano Fernández S, Marín F, Romero Aniorte A, Veliz Martínez A, Quintana Giner M, Ballesteros G, Palacio M, Alcalde O, García-Bolao I, Bertomeu Gonzalez V, Otero-Raviña F, García Seara J, Gonzalez Juanatey J, Dayal N, Maziarski P, Gentil-Baron P, Shah D, Koç M, Onrat E, Dural IE, Yilmaz K, Özin B, Tan Kurklu S, Atmaca Y, Canpolat U, Tokgozoglu L, Dolu AK, Demirtas B, Sahin D, Ozcan Celebi O, Diker E, Gagirci G, Turk UO, Ari H, Polat N, Toprak N, Sucu M, Akin Serdar O, Taha Alper A, Kepez A, Yuksel Y, Uzunselvi A, Yuksel S, Sahin M, Kayapinar O, Ozcan T, Kaya H, Yilmaz MB, Kutlu M, Demir M, Gibbs C, Kaminskiene S, Bryce M, Skinner A, Belcher G, Hunt J, Stancombe L, Holbrook B, Peters C, Tettersell S, Shantsila A, Lane D, Senoo K, Proietti M, Russell K, Domingos P, Hussain S, Partridge J, Haynes R, Bahadur S, Brown R, McMahon S, Y H Lip G, McDonald J, Balachandran K, Singh R, Garg S, Desai H, Davies K, Goddard W, Galasko G, Rahman I, Chua Y, Payne O, Preston S, Brennan O, Pedley L, Whiteside C, Dickinson C, Brown J, Jones K, Benham L, Brady R, Buchanan L, Ashton A, Crowther H, Fairlamb H, Thornthwaite S, Relph C, McSkeane A, Poultney U, Kelsall N, Rice P, Wilson T, Wrigley M, Kaba R, Patel T, Young E, Law J, Runnett C, Thomas H, McKie H, Fuller J, Pick S, Sharp A, Hunt A, Thorpe K, Hardman C, Cusack E, Adams L, Hough M, Keenan S, Bowring A, Watts J, Zaman J, Goffin K, Nutt H, Beerachee Y, Featherstone J, Mills C, Pearson J, Stephenson L, Grant S, Wilson A, Hawksworth C, Alam I, Robinson M, Ryan S, Egdell R, Gibson E, Holland M, Leonard D, Mishra B, Ahmad S, Randall H, Hill J, Reid L, George M, McKinley S, Brockway L, Milligan W, Sobolewska J, Muir J, Tuckis L, Winstanley L, Jacob P, Kaye S, Morby L, Jan A, Sewell T, Boos C, Wadams B, Cope C, Jefferey P, Andrews N, Getty A, Suttling A, Turner C, Hudson K, Austin R, Howe S, Iqbal R, Gandhi N, Brophy K, Mirza P, Willard E, Collins S, Ndlovu N, Subkovas E, Karthikeyan V, Waggett L, Wood A, Bolger A, Stockport J, Evans L, Harman E, Starling J, Williams L, Saul V, Sinha M, Bell L, Tudgay S, Kemp S, Brown J, Frost L, Ingram T, Loughlin A, Adams C, Adams M, Hurford F, Owen C, Miller C, Donaldson D, Tivenan H, Button H, Nasser A, Jhagra O, Stidolph B, Brown C, Livingstone C, Duffy M, Madgwick P, Roberts P, Greenwood E, Fletcher L, Beveridge M, Earles S, McKenzie D, Beacock D, Dayer M, Seddon M, Greenwell D, Luxton F, Venn F, Mills H, Rewbury J, James K, Roberts K, Tonks L, Felmeden D, Taggu W, Summerhayes A, Hughes D, Sutton J, Felmeden L, Khan M, Walker E, Norris L, O’Donohoe L, Mozid A, Dymond H, Lloyd-Jones H, Saunders G, Simmons D, Coles D, Cotterill D, Beech S, Kidd S, Wrigley B, Petkar S, Smallwood A, Jones R, Radford E, Milgate S, Metherell S, Cottam V, Buckley C, Broadley A, Wood D, Allison J, Rennie K, Balian L, Howard L, Pippard L, Board S, Pitt-Kerby T. Epidemiology and impact of frailty in patients with atrial fibrillation in Europe. Age Ageing 2022; 51:6670566. [PMID: 35997262 DOI: 10.1093/ageing/afac192] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 06/08/2022] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Frailty is a medical syndrome characterised by reduced physiological reserve and increased vulnerability to stressors. Data regarding the relationship between frailty and atrial fibrillation (AF) are still inconsistent. OBJECTIVES We aim to perform a comprehensive evaluation of frailty in a large European cohort of AF patients. METHODS A 40-item frailty index (FI) was built according to the accumulation of deficits model in the AF patients enrolled in the ESC-EHRA EORP-AF General Long-Term Registry. Association of baseline characteristics, clinical management, quality of life, healthcare resources use and risk of outcomes with frailty was examined. RESULTS Among 10,177 patients [mean age (standard deviation) 69.0 (11.4) years, 4,103 (40.3%) females], 6,066 (59.6%) were pre-frail and 2,172 (21.3%) were frail, whereas only 1,939 (19.1%) were considered robust. Baseline thromboembolic and bleeding risks were independently associated with increasing FI. Frail patients with AF were less likely to be treated with oral anticoagulants (OACs) (odds ratio 0.70, 95% confidence interval 0.55-0.89), especially with non-vitamin K antagonist OACs and managed with a rhythm control strategy, compared with robust patients. Increasing frailty was associated with a higher risk for all outcomes examined, with a non-linear exponential relationship. The use of OAC was associated with a lower risk of outcomes, except in patients with very/extremely high frailty. CONCLUSIONS In this large cohort of AF patients, there was a high burden of frailty, influencing clinical management and risk of adverse outcomes. The clinical benefit of OAC is maintained in patients with high frailty, but not in very high/extremely frail ones.
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Affiliation(s)
- Marco Proietti
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK.,Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy.,Geriatric Unit, IRCCS Istituti Clinici Scientifici Maugeri, Milan, Italy
| | - Giulio Francesco Romiti
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK.,Department of Translational and Precision Medicine, Sapienza - University of Rome, Italy
| | - Marco Vitolo
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK.,Cardiology Division, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Policlinico di Modena, Modena, Italy.,Clinical and Experimental Medicine PhD Program, University of Modena and Reggio Emilia, Modena, Italy
| | - Stephanie L Harrison
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK
| | - Deirdre A Lane
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Laurent Fauchier
- Service de Cardiologie, Centre Hospitalier Universitaire Trousseau, Tours, France
| | - Francisco Marin
- Department of Cardiology, Hospital Universitario Virgen de la Arrixaca, IMIB-Arrixaca, University of Murcia, CIBER-CV, Murcia, Spain
| | - Michael Näbauer
- Department of Cardiology, Ludwig-Maximilians-University, Munich, Germany
| | - Tatjana S Potpara
- School of Medicine, University of Belgrade, Belgrade, Serbia.,Clinical Center of Serbia, Belgrade, Serbia
| | - Gheorghe-Andrei Dan
- University of Medicine, 'Carol Davila', Colentina University Hospital, Bucharest, Romania
| | - Aldo P Maggioni
- ANMCO Research Center, Heart Care Foundation, Florence, Italy
| | - Matteo Cesari
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy.,Geriatric Unit, IRCCS Istituti Clinici Scientifici Maugeri, Milan, Italy
| | - Giuseppe Boriani
- Cardiology Division, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Policlinico di Modena, Modena, Italy
| | - Gregory Y H Lip
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
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Thomson E, Zhao L, Chen YS, Longmuss E, Ng ET, Sreenivasan R, Croft B, Song X, Sinclair A, Weiss M, Koopman P, Pelosi E. Generation and mutational analysis of a transgenic mouse model of human SRY. Hum Mutat 2021; 43:362-379. [PMID: 34918413 DOI: 10.1002/humu.24318] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 11/27/2021] [Accepted: 12/15/2021] [Indexed: 01/31/2023]
Abstract
SRY is the Y-chromosomal gene that determines male sex development in humans and most other mammals. After three decades of study, we still lack a detailed understanding of which domains of the SRY protein are required to engage the pathway of gene activity leading to testis development. Some insight has been gained from the study of genetic variations underlying differences/disorders of sex determination (DSD), but the lack of a system of experimentally generating SRY mutations and studying their consequences in vivo has limited progress in the field. To address this issue, we generated a mouse model carrying a human SRY transgene able to drive testis determination in XX mice. Using CRISPR-Cas9 gene editing, we generated novel genetic modifications in each of SRY's three domains (N-terminal, HMG box, and C-terminal) and performed a detailed analysis of their molecular and cellular effects on embryonic testis development. Our results provide new functional insights unique to human SRY and present a versatile and powerful system in which to functionally analyze variations of SRY including known and novel pathogenic variants found in DSD.
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Affiliation(s)
- Ella Thomson
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia.,Centre for Clinical Research, The University of Queensland, Brisbane, Queensland, Australia
| | - Liang Zhao
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia
| | - Yen-Shan Chen
- Department of Biochemistry & Molecular Biology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Enya Longmuss
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia
| | - Ee Ting Ng
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia
| | - Rajini Sreenivasan
- Murdoch Children's Research Institute and Department of Paediatrics, University of Melbourne, Melbourne, Victoria, Australia
| | - Brittany Croft
- Murdoch Children's Research Institute and Department of Paediatrics, University of Melbourne, Melbourne, Victoria, Australia
| | - Xin Song
- Centre for Clinical Research, The University of Queensland, Brisbane, Queensland, Australia
| | - Andrew Sinclair
- Murdoch Children's Research Institute and Department of Paediatrics, University of Melbourne, Melbourne, Victoria, Australia
| | - Michael Weiss
- Department of Biochemistry & Molecular Biology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia
| | - Emanuele Pelosi
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia.,Centre for Clinical Research, The University of Queensland, Brisbane, Queensland, Australia
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10
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McCann AJ, Lou J, Moustaqil M, Graus MS, Blum A, Fontaine F, Liu H, Luu W, Rudolffi-Soto P, Koopman P, Sierecki E, Gambin Y, Meunier FA, Liu Z, Hinde E, Francois M. A dominant-negative SOX18 mutant disrupts multiple regulatory layers essential to transcription factor activity. Nucleic Acids Res 2021; 49:10931-10955. [PMID: 34570228 PMCID: PMC8565327 DOI: 10.1093/nar/gkab820] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 08/18/2021] [Accepted: 09/08/2021] [Indexed: 11/17/2022] Open
Abstract
Few genetically dominant mutations involved in human disease have been fully explained at the molecular level. In cases where the mutant gene encodes a transcription factor, the dominant-negative mode of action of the mutant protein is particularly poorly understood. Here, we studied the genome-wide mechanism underlying a dominant-negative form of the SOX18 transcription factor (SOX18RaOp) responsible for both the classical mouse mutant Ragged Opossum and the human genetic disorder Hypotrichosis-lymphedema-telangiectasia-renal defect syndrome. Combining three single-molecule imaging assays in living cells together with genomics and proteomics analysis, we found that SOX18RaOp disrupts the system through an accumulation of molecular interferences which impair several functional properties of the wild-type SOX18 protein, including its target gene selection process. The dominant-negative effect is further amplified by poisoning the interactome of its wild-type counterpart, which perturbs regulatory nodes such as SOX7 and MEF2C. Our findings explain in unprecedented detail the multi-layered process that underpins the molecular aetiology of dominant-negative transcription factor function.
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Affiliation(s)
- Alex J McCann
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Jieqiong Lou
- School of Physics, Department of Biochemistry and Molecular Biology, Bio21, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Mehdi Moustaqil
- EMBL Australia Node in Single Molecule Science and School of Medical Sciences, The University of New South Wales, Sydney, NSW 1466, Australia
| | - Matthew S Graus
- The David Richmond Laboratory for Cardio-Vascular Development: gene regulation and editing, The Centenary Institute, Newtown, Sydney, NSW 2006, Australia
| | - Ailisa Blum
- Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Frank Fontaine
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Hui Liu
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, United States
| | - Winnie Luu
- The David Richmond Laboratory for Cardio-Vascular Development: gene regulation and editing, The Centenary Institute, Newtown, Sydney, NSW 2006, Australia
| | - Paulina Rudolffi-Soto
- EMBL Australia Node in Single Molecule Science and School of Medical Sciences, The University of New South Wales, Sydney, NSW 1466, Australia
| | - Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Emma Sierecki
- EMBL Australia Node in Single Molecule Science and School of Medical Sciences, The University of New South Wales, Sydney, NSW 1466, Australia
| | - Yann Gambin
- EMBL Australia Node in Single Molecule Science and School of Medical Sciences, The University of New South Wales, Sydney, NSW 1466, Australia
| | - Frédéric A Meunier
- Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Zhe Liu
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, United States
| | - Elizabeth Hinde
- School of Physics, Department of Biochemistry and Molecular Biology, Bio21, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Mathias Francois
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia.,The David Richmond Laboratory for Cardio-Vascular Development: gene regulation and editing, The Centenary Institute, Newtown, Sydney, NSW 2006, Australia.,School of Life and Environmental Sciences, The University of Sydney, Sydney, NSW 2006, Australia
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11
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Bird AD, Croft BM, Harada M, Tang L, Zhao L, Ming Z, Bagheri-Fam S, Koopman P, Wang Z, Akita K, Harley VR. Ovotesticular disorders of sex development in FGF9 mouse models of human synostosis syndromes. Hum Mol Genet 2021; 29:2148-2161. [PMID: 32452519 DOI: 10.1093/hmg/ddaa100] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 04/19/2020] [Accepted: 05/19/2020] [Indexed: 12/18/2022] Open
Abstract
In mice, male sex determination depends on FGF9 signalling via FGFR2c in the bipotential gonads to maintain the expression of the key testis gene SOX9. In humans, however, while FGFR2 mutations have been linked to 46,XY disorders of sex development (DSD), the role of FGF9 is unresolved. The only reported pathogenic mutations in human FGF9, FGF9S99N and FGF9R62G, are dominant and result in craniosynostosis (fusion of cranial sutures) or multiple synostoses (fusion of limb joints). Whether these synostosis-causing FGF9 mutations impact upon gonadal development and DSD etiology has not been explored. We therefore examined embryonic gonads in the well-characterized Fgf9 missense mouse mutants, Fgf9S99N and Fgf9N143T, which phenocopy the skeletal defects of FGF9S99N and FGF9R62G variants, respectively. XY Fgf9S99N/S99N and XY Fgf9N143T/N143T fetal mouse gonads showed severely disorganized testis cords and partial XY sex reversal at 12.5 days post coitum (dpc), suggesting loss of FGF9 function. By 15.5 dpc, testis development in both mutants had partly recovered. Mitotic analysis in vivo and in vitro suggested that the testicular phenotypes in these mutants arise in part through reduced proliferation of the gonadal supporting cells. These data raise the possibility that human FGF9 mutations causative for dominant skeletal conditions can also lead to loss of FGF9 function in the developing testis, at least in mice. Our data suggest that, in humans, testis development is largely tolerant of deleterious FGF9 mutations which lead to skeletal defects, thus offering an explanation as to why XY DSDs are rare in patients with pathogenic FGF9 variants.
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Affiliation(s)
- Anthony D Bird
- Centre for Endocrinology and Metabolism, Hudson Institute of Medical Research, Melbourne, VIC 3168, Australia.,Department of Molecular and Translational Science, Monash University, Clayton, VIC 3168, Australia
| | - Brittany M Croft
- Centre for Endocrinology and Metabolism, Hudson Institute of Medical Research, Melbourne, VIC 3168, Australia.,Department of Molecular and Translational Science, Monash University, Clayton, VIC 3168, Australia
| | - Masayo Harada
- Department of Clinical Anatomy, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8519, Japan
| | - Lingyun Tang
- State Key Laboratory of Medical Genomics, Research Center for Experimental Medicine, Rui-Jin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine (SJTUSM), Shanghai 200025, P.R. China
| | - Liang Zhao
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Zhenhua Ming
- Centre for Endocrinology and Metabolism, Hudson Institute of Medical Research, Melbourne, VIC 3168, Australia.,Department of Molecular and Translational Science, Monash University, Clayton, VIC 3168, Australia
| | - Stefan Bagheri-Fam
- Centre for Endocrinology and Metabolism, Hudson Institute of Medical Research, Melbourne, VIC 3168, Australia
| | - Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Zhugang Wang
- State Key Laboratory of Medical Genomics, Research Center for Experimental Medicine, Rui-Jin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine (SJTUSM), Shanghai 200025, P.R. China
| | - Keiichi Akita
- Department of Clinical Anatomy, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8519, Japan
| | - Vincent R Harley
- Centre for Endocrinology and Metabolism, Hudson Institute of Medical Research, Melbourne, VIC 3168, Australia.,Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC 3800, Australia
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12
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Feng CW, Burnet G, Spiller CM, Cheung FKM, Chawengsaksophak K, Koopman P, Bowles J. Identification of regulatory elements required for Stra8 expression in fetal ovarian germ cells of the mouse. Development 2021; 148:dev.194977. [PMID: 33574039 DOI: 10.1242/dev.194977] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 02/04/2021] [Indexed: 12/14/2022]
Abstract
In mice, the entry of germ cells into meiosis crucially depends on the expression of stimulated by retinoic acid gene 8 (Stra8). Stra8 is expressed specifically in pre-meiotic germ cells of females and males, at fetal and postnatal stages, respectively, but the mechanistic details of its spatiotemporal regulation are yet to be defined. In particular, there has been considerable debate regarding whether retinoic acid is required, in vivo, to initiate Stra8 expression in the mouse fetal ovary. We show that the distinctive anterior-to-posterior pattern of Stra8 initiation, characteristic of germ cells in the fetal ovary, is faithfully recapitulated when 2.9 kb of the Stra8 promoter is used to drive eGFP expression. Using in vitro transfection assays of cutdown and mutant constructs, we identified two functional retinoic acid responsive elements (RAREs) within this 2.9 kb regulatory element. We also show that the transcription factor DMRT1 enhances Stra8 expression, but only in the presence of RA and the most proximal RARE. Finally, we used CRISPR/Cas9-mediated targeted mutation studies to demonstrate that both RAREs are required for optimal Stra8 expression levels in vivo.
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Affiliation(s)
- Chun-Wei Feng
- School of Biomedical Sciences, The University of Queensland, Brisbane, Queensland 4072, Australia.,Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Guillaume Burnet
- School of Biomedical Sciences, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Cassy M Spiller
- School of Biomedical Sciences, The University of Queensland, Brisbane, Queensland 4072, Australia.,Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Fiona Ka Man Cheung
- School of Biomedical Sciences, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Kallayanee Chawengsaksophak
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia.,Institute of Molecular Genetics of the Czech Academy of Sciences, v.v.i. Vídenská 1083, 4 14220 Prague, Czech Republic
| | - Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Josephine Bowles
- School of Biomedical Sciences, The University of Queensland, Brisbane, Queensland 4072, Australia .,Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
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13
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Miyawaki S, Kuroki S, Maeda R, Okashita N, Koopman P, Tachibana M. The mouse Sry locus harbors a cryptic exon that is essential for male sex determination. Science 2020; 370:121-124. [PMID: 33004521 DOI: 10.1126/science.abb6430] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 08/06/2020] [Indexed: 11/02/2022]
Abstract
The mammalian sex-determining gene Sry induces male development. Since its discovery 30 years ago, Sry has been believed to be a single-exon gene. Here, we identified a cryptic second exon of mouse Sry and a corresponding two-exon type Sry (Sry-T) transcript. XY mice lacking Sry-T were sex-reversed, and ectopic expression of Sry-T in XX mice induced male development. Sry-T messenger RNA is expressed similarly to that of canonical single-exon type Sry (Sry-S), but SRY-T protein is expressed predominantly because of the absence of a degron in the C terminus of SRY-S. Sry exon2 appears to have evolved recently in mice through acquisition of a retrotransposon-derived coding sequence to replace the degron. Our findings suggest that in nature, SRY-T, not SRY-S, is the bona fide testis-determining factor.
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Affiliation(s)
- Shingo Miyawaki
- Laboratory of Epigenome Dynamics, Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka, 565-0871, Japan.,Division of Epigenome Dynamics, Institute of Advanced Medical Sciences, Tokushima University, 3-18-15 Kuramoto-Cho, Tokushima, 770-8503, Japan
| | - Shunsuke Kuroki
- Laboratory of Epigenome Dynamics, Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka, 565-0871, Japan.,Division of Epigenome Dynamics, Institute of Advanced Medical Sciences, Tokushima University, 3-18-15 Kuramoto-Cho, Tokushima, 770-8503, Japan
| | - Ryo Maeda
- Laboratory of Epigenome Dynamics, Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka, 565-0871, Japan.,Division of Epigenome Dynamics, Institute of Advanced Medical Sciences, Tokushima University, 3-18-15 Kuramoto-Cho, Tokushima, 770-8503, Japan
| | - Naoki Okashita
- Laboratory of Epigenome Dynamics, Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka, 565-0871, Japan.,Division of Epigenome Dynamics, Institute of Advanced Medical Sciences, Tokushima University, 3-18-15 Kuramoto-Cho, Tokushima, 770-8503, Japan
| | - Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Makoto Tachibana
- Laboratory of Epigenome Dynamics, Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka, 565-0871, Japan. .,Division of Epigenome Dynamics, Institute of Advanced Medical Sciences, Tokushima University, 3-18-15 Kuramoto-Cho, Tokushima, 770-8503, Japan
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14
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Stassen J, Scherrenberg M, Vijgen J, Dilling D, Herbots L, Timmermans PHJ, Schurmans J, Verwerft J, Koopman P. 47CRT-D versus CRT-P: are we on the right track? Europace 2020. [DOI: 10.1093/europace/euaa162.067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Implantable cardioverter defibrillators (ICD) and cardiac resynchronisation therapy (CRT) have both proven to reduce mortality in patients with heart failure (HF). However, randomised trials comparing CRT-pacemaker (CRT-P) vs CRT-defibrillator (CRT-D) are lacking. Understanding a patient’s primary mode of death is therefore important as this may guide the proper use of CRT systems and avoid risks that are associated with under -or overtreatment with an ICD.
Purpose
This study aims to analyse the mode of death and the occurrence of life-threatening ventricular arrhythmias (VAs) in patients who received a CRT-P or CRT-D. This may help in the future selection for an appropriate cardiac device in patients with HF.
Methods
Patients with HF undergoing CRT-P or CRT-D implantation in a tertiary hospital between January 2008 and December 2018 were retrospectively evaluated. CRT indications were in compliance with the ESC guidelines. The decision to implant CRT-D or CRT-P in primary prevention was left at the discretion of the treating physician but was based on ESC clinical guidance. Life threatening VAs (sustained ventricular tachycardia > 30s not requiring therapy or appropriate therapy for VAs) and mode of death were analysed.
Results
511 patients were implanted with a CRT (CRT-D/CRT-P; n = 311/200) of which 410 (CRT-D/CRT-P; n= 245/165) were followed in our centre for 63,5 ± 38,1 months. Patients with CRT-P were older (77,6 ± 8,1 vs 66,8 ± 9,5 years; p <0,001), more often female (39,4 vs 26,9%; p 0,006), had more a non-ischaemic cause (61,2 vs 44,9%; p 0,001) and a significant higher comorbidity burden. They also received less treatment with neurohumoral blockers. Baseline LVEF was higher in the CRT-P group (33,1 ± 8,9 vs 28,0 ± 7,6%, p <0,001). 6 months follow-up showed a similar increase in LVEF in the CRT-P vs CRT-D group (+10,3 ± 9,6 vs +11,4 ± 10,8%, p 0,38).
Main reasons to choose for CRT-P were RV-pacing induced cardiomyopathy (CMP) (26,1%), multiple comorbidities (18,8%), HF complicated by high degree AV block or AV junction ablation (18,2%), non-ischaemic CMP with suspected good CRT response (10,3%), age (7,3%), other (19,3%).
6/165 patients with CRT-P (3,6%), of which 5 were detected by remoted telemonitoring, vs 51/245 with CRT-D (20,8%) experienced episodes of life-threatening arrhythmias (p <0,001). All-cause mortality was higher in the CRT-P vs CRT-D group (36,4 vs 25,3%, p 0,005). However, the CRT-P group had a predominant non-cardiac mode of death (70,9 vs 43,3%, p <0,001). Death secondary to a tachyarrhythmic event was present in only 1 patient (1,7%) in the CRT-P group.
Conclusions
Guided by clinical parameters and presence of competitive non-cardiac causes of death, adequate decision between CRT-P or CRT-D implantation can be made. In our cohort, sudden cardiac death in the CRT-P group occurred only once. Remote monitoring is able to identify a subgroup of patients potentially benefiting from an upgrade from CRT-P to CRT-D.
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Affiliation(s)
- J Stassen
- Virga Jesse Hospital, Hasselt, Belgium
| | | | - J Vijgen
- Virga Jesse Hospital, Hasselt, Belgium
| | - D Dilling
- Virga Jesse Hospital, Hasselt, Belgium
| | - L Herbots
- Virga Jesse Hospital, Hasselt, Belgium
| | | | | | | | - P Koopman
- Virga Jesse Hospital, Hasselt, Belgium
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15
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Stassen J, Dilling D, Vijgen J, Scherrenberg M, Schurmans J, Verwerft J, Koopman P. P356Effect of catheter ablation on left and right ventricular function in patients with frequent premature ventricular contractions and preserved ejection fraction. Europace 2020. [DOI: 10.1093/europace/euaa162.066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
INTRODUCTION
Improvement of left ventricular ejection fraction (LVEF) after catheter ablation (CA) in patients with left ventricular (LV) dysfunction and frequent premature ventricular contractions (PVCs) of the outflow tract (OT) has been reported. However, many patients with PVCs of the OT have a normal LVEF. The effect of CA on the left and right ventricular function in these patients is not well established.
PURPOSE
This study aims to evaluate the effect of CA on improvement of left and right ventricular function in patients with a preserved LVEF (EF > 50%) and frequent PVCs originating from the OT.
METHODS
We retrospectively examined clinical, electrophysiological and echocardiographic measurements in 95 patients with a preserved LVEF and frequent PVCs from the OT who underwent CA, dating from January 2014 till December 2018. Two dimensional TTE was performed at baseline and follow up. LV volumes and LVEF were calculated using the Simpson’s method. LV global longitudinal strain (GLS) and RV free wall longitudinal strain were calculated by 2D speckle tracking. The Shapiro-Wilk test was used to determine the normal distribution of all variables. The Wilcoxon Signed Rank test was used to compare the evolution of the categorical and continuous variables between the TTE at baseline and follow-up.
RESULTS
Mean age of our study population was 52.8 ± 16.6 years, 49% was female. Mean burden of PVC before ablation was 18423 (2496-54000)/24h; 23.2% had a burden of less than 10.000 PVCs/24h. Mean burden of PVC after ablation was 1403 (0-27349)/24h. Median time between ablation and follow-up TTE was 117,8 days. There was a significant amelioration of LVEF (54.0 ± 4.0 vs 58.0 ± 3.8%, p <0.001) and LV GLS (18.4 ± 2.2 vs 20.4 ± 2.0 %, p < 0.001) as well as TAPSE (24.8 ± 3.5 vs 25.2 ± 3.1mm, p 0.013) and RV strain (25.4 ± 3.9 vs 27.6 ± 3.7%, p <0.001). There was no significant difference in LV end diastolic diameter (50.1 ± 5.6 vs 49.6 ± 5.3mm, p 0.06) or LV end diastolic volume (109.7 ± 27.8 vs 107.2 ± 24.9mm, p 0.25), but there was a significant reduction in LV end systolic volume (50.7 ± 13.9 vs 44.7 ± 11.1mm, p < 0.001). RV basal diameter was not different (33.8 ± 4.5mm vs 33.6 ± 4.2mm, p 0.30).In the patient group with VES <10000/24h, there was no significant difference in LVEF (55,2 ± 4,6 vs 55,9 ± 4,6%, p 0,12), but there was a significant amelioration of GLS (18.4 ± 2.2 vs 19.9 ± 2.1%, p < 0.001) and RV strain (24.1 ± 4.3 vs 25.9 ±3.3%, p0.003). In the patient group with VES >10000/24h, beneficial effects were noticed in LVEF (53.6 ± 3.8 vs 58.7 ±3.2%, p < 0.001), GLS (18.4 ± 2.2 vs 20.5 ± 2.0%, p < 0.001) and RV strain (25.8 ± 3.7 vs 28.1 ± 3.7%, p < 0.001).
CONCLUSION
Frequent PVCs from the OT can induce subtle cardiac dysfunction in patients without apparent cardiomyopathy. CA can improve left and right ventricular function in these patients, which can be detected by conventional TTE parameters but also in an earlier stage by 2D speckle tracking.
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Affiliation(s)
- J Stassen
- Virga Jesse Hospital, Hasselt, Belgium
| | - D Dilling
- Virga Jesse Hospital, Hasselt, Belgium
| | - J Vijgen
- Virga Jesse Hospital, Hasselt, Belgium
| | | | | | | | - P Koopman
- Virga Jesse Hospital, Hasselt, Belgium
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16
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Stassen J, Dilling D, Vijgen J, Schurmans J, Koopman P. P365Does papillary muscle ablation affect mitral valve function: a single centre experience. Europace 2020. [DOI: 10.1093/europace/euaa162.185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Ventricular arrhythmias from papillary muscles (PMs) often require extensive catheter ablation (CA). Not much is known about the mitral valve (MV) function after these extensive catheter ablations.
Purpose
The goal of this study was to determine the impact of papillary muscle CA on MV function.
Methods
We retrospectively examined echocardiographic measurements in 21 patients with frequent premature ventricular contractions (PVCs) originating from the mitral PMs who underwent CA, dating from October 2012 till November 2018. We assessed MV function at baseline, 6 month and last follow-up. Degree of mitral regurgitation (MR) was graded as mild (ERO <0,2 cm2, regurgitation volume (RV) <30ml), moderate (ERO 0,2-0,4cm2, RV 30-59ml) or severe (ERO ≥0,4cm2, RV ≥60ml). Significant MR was defined as a 2+ change.
Results
Mean age of the study population was 59,7 (27-80)years, 52,4% was female.
2 patients were known with ischemic heart disease. There was a family history of sudden cardiac death in 3 patients. Main symptoms at presentation were palpitations (66,7%), fatigue (33,3%), dyspnea (33,3%, all NYHA 2), dizziness (28,6%), angina pectoris (14,3%) and syncope (4,8%). Beta blocker (71,4%), flecaïnide (23,8%), amiodarone (9,5%), sotalol (4,8%) and propafenon (4,8%) were the most frequent medical therapies before CA.
Mean burden of PVC before ablation was 15 574 (2000-39700)/24h. In 28,6% non sustained VT was documented, 1 patient suffered a sustained episode of VT. After ablation, mean burden of PVC was reduced to 1331 (0-14200)/24h. Redo ablation was necessary in 28,6% of patients. PVCs orginated from the anterolateral PM in 33,3% and from the posteromedial PM in 66,7%. Mean troponin release was 9.4 ± 5.3 µg/l, mean troponin hs (since 2016) was 1591.0 ±658.6ng/ml. CMR was done in 14/21 (66,7%) patients before CA. In 5 out of 14 patients (35,7%), delayed enhancement at the papillary muscles was noticed. In 5 patients without delayed enhancement, CMR was repeated after CA. In all these 5 patients, delayed enhancement was noticed at the level of the papillary muscles.
At baseline, 15/21 had mild, 5/21 moderate and 1/21 severe MR. There was no significant chance in MR at 6m follow-up with 15/21 having mild and 6/21 moderate MR (p 0.58) with 1 patient having a significant MR 2+ change. At last follow-up (23.7 ± 22.6 months) there was also no significant chance in MR with 15/21 having mild and 6/21 moderate MR (p 0.58) without a significant MR 2+ change.
Complications occurred in 1 patient (transient AV blok). No patients died during follow up.
Conclusions
Although PM ablation was associated with time extensive ablation, significant troponine release and documented delayed enhancement on post ablation MRI, there was no risk of additional valvular dysfunction after CA in this study. Larger studies will be necessary to confirm these findings.
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Affiliation(s)
- J Stassen
- Virga Jesse Hospital, Hasselt, Belgium
| | - D Dilling
- Virga Jesse Hospital, Hasselt, Belgium
| | - J Vijgen
- Virga Jesse Hospital, Hasselt, Belgium
| | | | - P Koopman
- Virga Jesse Hospital, Hasselt, Belgium
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17
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Bowles J, Feng CW, Ineson J, Miles K, Spiller CM, Harley VR, Sinclair AH, Koopman P. Retinoic Acid Antagonizes Testis Development in Mice. Cell Rep 2019; 24:1330-1341. [PMID: 30067986 DOI: 10.1016/j.celrep.2018.06.111] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 04/26/2018] [Accepted: 06/27/2018] [Indexed: 12/29/2022] Open
Abstract
Mammalian sex determination depends on a complex interplay of signals that promote the bipotential fetal gonad to develop as either a testis or an ovary, but the details are incompletely understood. Here, we investigated whether removal of the signaling molecule retinoic acid (RA) by the degradative enzyme CYP26B1 is necessary for proper development of somatic cells of the testes. Gonadal organ culture experiments suggested that RA promotes expression of some ovarian markers and suppresses expression of some testicular markers, acting downstream of Sox9. XY Cyp26b1-null embryos, in which endogenous RA is not degraded, develop mild ovotestes, but more important, steroidogenesis is impaired and the reproductive tract feminized. Experiments involving purified gonadal cells showed that these effects are independent of germ cells and suggest the direct involvement of the orphan nuclear receptor DAX1. Our results reveal that active removal of endogenous RA is required for normal testis development in the mouse.
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Affiliation(s)
- Josephine Bowles
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia; School of Biomedical Sciences, The University of Queensland, Brisbane, QLD 4072, Australia.
| | - Chun-Wei Feng
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia; School of Biomedical Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Jessica Ineson
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia; School of Biomedical Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Kim Miles
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Cassy M Spiller
- School of Biomedical Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Vincent R Harley
- Hudson Institute of Medical Research, Clayton, Melbourne, VIC 3168, Australia
| | - Andrew H Sinclair
- Murdoch Children's Research Institute and Department of Paediatrics, University of Melbourne, Royal Children's Hospital, Melbourne, VIC 3052, Australia
| | - Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
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18
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Nomura R, Kashimada K, Suzuki H, Zhao L, Tsuji-Hosokawa A, Yagita H, Takagi M, Kanai Y, Bowles J, Koopman P, Kanai-Azuma M, Morio T. Nr5a1 suppression during the murine fetal period optimizes ovarian development by fine-tuning Notch signaling. J Cell Sci 2019; 132:jcs.223768. [PMID: 30877223 DOI: 10.1242/jcs.223768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 03/04/2019] [Indexed: 11/20/2022] Open
Abstract
The nuclear receptor NR5A1 is equally expressed and required for development of the gonadal primordia of both sexes, but, after sex determination, it is upregulated in XY testes and downregulated in XX ovaries. We have recently demonstrated, in mice, that this downregulation is mediated by forkhead box L2 (FOXL2) and hypothesized that adequate suppression of Nr5a1 is essential for normal ovarian development. Further, analysis of human patients with disorders/differences of sex development suggests that overexpression of NR5A1 can result in XX (ovo)testicular development. Here, we tested the role of Nr5a1 by overexpression in fetal gonads using a Wt1-BAC (bacterial artificial chromosome) transgene system. Enforced Nr5a1 expression compromised ovarian development in 46,XX mice, resulting in late-onset infertility, but did not induce (ovo)testis differentiation. The phenotype was similar to that of XX mice lacking Notch signaling. The expression level of Notch2 was significantly reduced in Nr5a1 transgenic mice, and the ovarian phenotype was almost completely rescued by in utero treatment with a NOTCH2 agonist. We conclude that suppression of Nr5a1 during the fetal period optimizes ovarian development by fine-tuning Notch signaling.
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Affiliation(s)
- Risa Nomura
- Department of Pediatrics and Developmental Biology, Tokyo Medical Dental University, Tokyo 113-8510, Japan
| | - Kenichi Kashimada
- Department of Pediatrics and Developmental Biology, Tokyo Medical Dental University, Tokyo 113-8510, Japan
| | - Hitomi Suzuki
- Department of Experimental Animal Model for Human Disease, Graduate School of Medical and Dental Science, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Liang Zhao
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Atsumi Tsuji-Hosokawa
- Department of Pediatrics and Developmental Biology, Tokyo Medical Dental University, Tokyo 113-8510, Japan
| | - Hideo Yagita
- Department of Immunology, Juntendo University School of Medicine, Tokyo 113-8421, Japan
| | - Masatoshi Takagi
- Department of Pediatrics and Developmental Biology, Tokyo Medical Dental University, Tokyo 113-8510, Japan
| | - Yoshiakira Kanai
- Department of Veterinary Anatomy, The University of Tokyo, Tokyo 113-8657, Japan
| | - Josephine Bowles
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Masami Kanai-Azuma
- Department of Experimental Animal Model for Human Disease, Graduate School of Medical and Dental Science, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Tomohiro Morio
- Department of Pediatrics and Developmental Biology, Tokyo Medical Dental University, Tokyo 113-8510, Japan
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19
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Anuar ND, Kurscheid S, Field M, Zhang L, Rebar E, Gregory P, Buchou T, Bowles J, Koopman P, Tremethick DJ, Soboleva TA. Gene editing of the multi-copy H2A.B gene and its importance for fertility. Genome Biol 2019; 20:23. [PMID: 30704500 PMCID: PMC6357441 DOI: 10.1186/s13059-019-1633-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Accepted: 01/16/2019] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Altering the biochemical makeup of chromatin by the incorporation of histone variants during development represents a key mechanism in regulating gene expression. The histone variant H2A.B, H2A.B.3 in mice, appeared late in evolution and is most highly expressed in the testis. In the mouse, it is encoded by three different genes. H2A.B expression is spatially and temporally regulated during spermatogenesis being most highly expressed in the haploid round spermatid stage. Active genes gain H2A.B where it directly interacts with polymerase II and RNA processing factors within splicing speckles. However, the importance of H2A.B for gene expression and fertility are unknown. RESULTS Here, we report the first mouse knockout of this histone variant and its effects on fertility, nuclear organization, and gene expression. In view of the controversy related to the generation of off-target mutations by gene editing approaches, we test the specificity of TALENs by disrupting the H2A.B multi-copy gene family using only one pair of TALENs. We show that TALENs do display a high level of specificity since no off-target mutations are detected by bioinformatics analyses of exome sequences obtained from three consecutive generations of knockout mice and by Sanger DNA sequencing. Male H2A.B.3 knockout mice are subfertile and display an increase in the proportion of abnormal sperm and clogged seminiferous tubules. Significantly, a loss of proper RNA Pol II targeting to distinct transcription-splicing territories and changes to pre-mRNA splicing are observed. CONCLUSION We have produced the first H2A.B knockout mouse using the TALEN approach.
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Affiliation(s)
- Nur Diana Anuar
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, 2601, Australia
| | - Sebastian Kurscheid
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, 2601, Australia.,Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Matt Field
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, 2601, Australia.,Present Address: James Cook University, PO Box 6811, Cairns, QLD, 4870, Australia.,Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Lei Zhang
- Sangamo Therapeutics, 501 Canal Blvd, Richmond, CA, 94804, USA
| | - Edward Rebar
- Sangamo Therapeutics, 501 Canal Blvd, Richmond, CA, 94804, USA
| | - Philip Gregory
- Sangamo Therapeutics, 501 Canal Blvd, Richmond, CA, 94804, USA.,Present Address: bluebird bio, 60 Binney St, Cambridge, MA, 02142, USA
| | - Thierry Buchou
- CNRS UMR 5309, Inserm U1209, Universite' Grenoble Alpes, Institute for Advanced Biosciences, 38700, Grenoble, France
| | - Josephine Bowles
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - David J Tremethick
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, 2601, Australia.
| | - Tatiana A Soboleva
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, 2601, Australia.
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20
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Zhao L, Wang C, Lehman ML, He M, An J, Svingen T, Spiller CM, Ng ET, Nelson CC, Koopman P. Transcriptomic analysis of mRNA expression and alternative splicing during mouse sex determination. Mol Cell Endocrinol 2018; 478:84-96. [PMID: 30053582 DOI: 10.1016/j.mce.2018.07.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 07/23/2018] [Accepted: 07/23/2018] [Indexed: 12/15/2022]
Abstract
Mammalian sex determination hinges on sexually dimorphic transcriptional programs in developing fetal gonads. A comprehensive view of these programs is crucial for understanding the normal development of fetal testes and ovaries and the etiology of human disorders of sex development (DSDs), many of which remain unexplained. Using strand-specific RNA-sequencing, we characterized the mouse fetal gonadal transcriptome from 10.5 to 13.5 days post coitum, a key time window in sex determination and gonad development. Our dataset benefits from a greater sensitivity, accuracy and dynamic range compared to microarray studies, allows global dynamics and sex-specificity of gene expression to be assessed, and provides a window to non-transcriptional events such as alternative splicing. Spliceomic analysis uncovered female-specific regulation of Lef1 splicing, which may contribute to the enhanced WNT signaling activity in XX gonads. We provide a user-friendly visualization tool for the complete transcriptomic and spliceomic dataset as a resource for the field.
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Affiliation(s)
- Liang Zhao
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Chenwei Wang
- Australian Prostate Cancer Research Centre - Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute, Brisbane, Queensland, 4102, Australia
| | - Melanie L Lehman
- Australian Prostate Cancer Research Centre - Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute, Brisbane, Queensland, 4102, Australia
| | - Mingyu He
- Longsoft, Brisbane, Queensland, 4109, Australia
| | - Jiyuan An
- Australian Prostate Cancer Research Centre - Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute, Brisbane, Queensland, 4102, Australia
| | - Terje Svingen
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Cassy M Spiller
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Ee Ting Ng
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Colleen C Nelson
- Australian Prostate Cancer Research Centre - Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute, Brisbane, Queensland, 4102, Australia
| | - Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, 4072, Australia.
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21
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Backhouse B, Hanna C, Robevska G, van den Bergen J, Pelosi E, Simons C, Koopman P, Juniarto AZ, Grover S, Faradz S, Sinclair A, Ayers K, Tan TY. Identification of Candidate Genes for Mayer-Rokitansky-Küster-Hauser Syndrome Using Genomic Approaches. Sex Dev 2018; 13:26-34. [PMID: 30504698 DOI: 10.1159/000494896] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/18/2018] [Indexed: 12/21/2022] Open
Abstract
Mayer-Rokitansky-Küster-Hauser (MRKH) syndrome is a disorder of sex development which affects 1 in 4,500 females and is characterized by agenesis of müllerian structures, including the uterus, cervix, and upper vagina. It can occur in isolation (type 1) or in conjunction with various anomalies (type 2), with a subset of these comprising müllerian, renal, and cervicothoracic abnormalities (MURCS) association. The genetic causes of MRKH have been investigated previously yielding limited results, with massive parallel sequencing becoming increasingly utilized. We sought to identify genetic contributions to MRKH using a combination of microarray and whole exome sequencing (WES) on a cohort of 8 unrelated women with MRKH and MURCS. WES data were analysed using a candidate gene approach to identify potential contributing variants. Microarray analysis identified a 0.6-Mb deletion in the previously implicated 16p11.2 region in a patient with MRKH type 2. WES revealed 16 rare nonsynonymous variants in MRKH candidate genes across the cohort. These included variants in several genes, such as LRP10 and DOCK4, associated with disorders with müllerian anomalies. Further functional studies of these variants will help to delineate their biological significance and expand the genotypic spectrum of MRKH.
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22
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de Boer IR, Bakker DR, Serrano CM, Koopman P, Wesselink PR, Vervoorn JM. Innovation in dental education: The "On-the-Fly" approach to simultaneous development, implementation and evidence collection. Eur J Dent Educ 2018; 22:215-222. [PMID: 29498178 DOI: 10.1111/eje.12331] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/26/2018] [Indexed: 06/08/2023]
Abstract
INTRODUCTION This study outlines an approach for education innovation and addresses the ambivalence between evidence-based and non-evidence-based conditions. The "on-the-fly" approach was described as involving implementation during the development of an innovation for dental education. MATERIALS AND METHODS The process of designing and implementing cutting-edge technology of the MOOG Simodont Dental Trainer (DT) whilst systematically collecting evidence illustrates the "on-the-fly" approach. RESULTS Using the "on-the-fly" approach for developing, implementing and collecting evidence simultaneously in an academic environment appears feasible in serving both the professionals, users and developers and system designers. During the implementation of the new technology, growing evidence stepwise strengthened its position; therefore, showing stakeholders that evidence was used to improve the technology seemed to support and increase acceptance of the new technology. CONCLUSIONS When pioneering an innovative technology in a specialty field, the development stage often precedes evidence for its effectiveness. Consciously choosing the "on-the-fly" approach clarifies to stakeholders in advance about the lack of evidence in an innovation and the need of their support to collect such evidence for improvement and in order to facilitate implementation.
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Affiliation(s)
- I R de Boer
- Institute of Education, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - D R Bakker
- Institute of Education, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - C M Serrano
- Institute of Education, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - P Koopman
- Institute of Education, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - P R Wesselink
- Department of Cariology Endodontology and Pedodontology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - J M Vervoorn
- Institute of Education, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
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23
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Sreenivasan R, Ludbrook L, Fisher B, Declosmenil F, Knower KC, Croft B, Bird AD, Ryan J, Bashamboo A, Sinclair AH, Koopman P, McElreavey K, Poulat F, Harley VR. Mutant NR5A1/SF-1 in patients with disorders of sex development shows defective activation of the SOX9 TESCO enhancer. Hum Mutat 2018; 39:1861-1874. [PMID: 30067310 DOI: 10.1002/humu.23603] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 07/19/2018] [Accepted: 07/19/2018] [Indexed: 11/09/2022]
Abstract
Nuclear receptor subfamily 5 group A member 1/Steroidogenic factor 1 (NR5A1; SF-1; Ad4BP) mutations cause 46,XY disorders of sex development (DSD), with phenotypes ranging from developmentally mild (e.g., hypospadias) to severe (e.g., complete gonadal dysgenesis). The molecular mechanism underlying this spectrum is unclear. During sex determination, SF-1 regulates SOX9 (SRY [sex determining region Y]-box 9) expression. We hypothesized that SF-1 mutations in 46,XY DSD patients affect SOX9 expression via the Testis-specific Enhancer of Sox9 core element, TESCO. Our objective was to assess the ability of 20 SF-1 mutants found in 46,XY DSD patients to activate TESCO. Patient DNA was sequenced for SF-1 mutations and mutant SF-1 proteins were examined for transcriptional activity, protein expression, sub-cellular localization and in silico structural defects. Fifteen of the 20 mutants showed reduced SF-1 activation on TESCO, 11 with atypical sub-cellular localization. Fourteen SF-1 mutants were predicted in silico to alter DNA, ligand or cofactor interactions. Our study may implicate aberrant SF-1-mediated transcriptional regulation of SOX9 in 46,XY DSDs.
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Affiliation(s)
- Rajini Sreenivasan
- Hudson Institute of Medical Research, Victoria, Australia.,Department of Anatomy and Neuroscience, University of Melbourne, Victoria, Australia
| | - Louisa Ludbrook
- Hudson Institute of Medical Research, Victoria, Australia.,Department of Biochemistry and Molecular Biology, Monash University, Victoria, Australia
| | - Brett Fisher
- Hudson Institute of Medical Research, Victoria, Australia.,Department of Biochemistry and Molecular Biology, Monash University, Victoria, Australia
| | | | - Kevin C Knower
- Hudson Institute of Medical Research, Victoria, Australia
| | - Brittany Croft
- Hudson Institute of Medical Research, Victoria, Australia.,Department of Molecular Translational Science, Monash University, Victoria, Australia
| | - Anthony D Bird
- Hudson Institute of Medical Research, Victoria, Australia
| | - Janelle Ryan
- Hudson Institute of Medical Research, Victoria, Australia
| | | | - Andrew H Sinclair
- Murdoch Children's Research Institute, Royal Children's Hospital and Department of Paediatrics, The University of Melbourne, Melbourne, Victoria, Australia
| | - Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | | | - Francis Poulat
- Department of Molecular Translational Science, Monash University, Victoria, Australia
| | - Vincent R Harley
- Hudson Institute of Medical Research, Victoria, Australia.,Department of Biochemistry and Molecular Biology, Monash University, Victoria, Australia.,Department of Anatomy and Developmental Biology, Monash University, Victoria, Australia
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24
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Slape C, Zamora AP, Lisle J, Huang J, Zhao L, Koopman P. Variation in HoxA9 Expression in the NUP98-HOXD13 Myelodysplasia Model, Using a Novel HoxA9-eGFP Reporter Mouse. Exp Hematol 2018. [DOI: 10.1016/j.exphem.2018.06.153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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25
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Desteghe L, Germeys J, Vijgen J, Koopman P, Dilling-Boer D, Schurmans J, Dendale P, Heidbuchel H. 210The impact of an online directed education platform on the knowledge level of atrial fibrillation patients undergoing cardioversion or pulmonary vein isolation. Europace 2018. [DOI: 10.1093/europace/euy015.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- L Desteghe
- Hasselt University and Heart Center, Jessa Hospital, Hasselt, Belgium
| | - J Germeys
- Faculty of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium
| | - J Vijgen
- Heart Center, Jessa Hospital, Hasselt, Belgium
| | - P Koopman
- Heart Center, Jessa Hospital, Hasselt, Belgium
| | | | - J Schurmans
- Heart Center, Jessa Hospital, Hasselt, Belgium
| | - P Dendale
- Hasselt University and Heart Center, Jessa Hospital, Hasselt, Belgium
| | - H Heidbuchel
- University of Antwerp and Antwerp University Hospital, Antwerp, Belgium
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26
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Bagheri-Fam S, Bird AD, Zhao L, Ryan JM, Yong M, Wilhelm D, Koopman P, Eswarakumar VP, Harley VR. Testis Determination Requires a Specific FGFR2 Isoform to Repress FOXL2. Endocrinology 2017; 158:3832-3843. [PMID: 28938467 PMCID: PMC5695826 DOI: 10.1210/en.2017-00674] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 09/05/2017] [Indexed: 02/03/2023]
Abstract
Male sex determination in mammals relies on sex determining region Y-mediated upregulation of sex determining region-box 9 (SOX9) expression in XY gonads, whereas Wnt family member (WNT)/R-spondin 1 signaling and forkhead box L2 (FOXL2) drive female sex determination in XX gonads. Fibroblast growth factor (FGF) 9 signaling ensures sustained SOX9 expression through repression of one of the ovarian pathways (WNT signaling), whereas the significance of FGF-mediated repression of the FOXL2 pathway has not been studied. Previously, we demonstrated that FGFR2 is the receptor for FGF9 in the XY gonad. Whether a specific isoform (FGFR2b or FGFR2c) is required was puzzling. Here, we show that FGFR2c is required for male sex determination. Initially, in developing mouse embryos at 12.5 to 13.5 days postcoitum (dpc), XY Fgfr2c-/- gonads appear as ovotestes, with SOX9 and FOXL2 expression predominantly localized to the posterior and anterior gonadal poles, respectively. However, by 15.5 dpc, XY Fgfr2c-/- gonads show complete male-to-female sex reversal, evident by the lack of SOX9 and ectopic expression of FOXL2 throughout the gonads. Furthermore, ablation of the Foxl2 gene leads to partial or complete rescue of gonadal sex reversal in XY Fgfr2c-/- mice. Together with previous findings, our data suggest that testis determination involves FGFR2c-mediated repression of both the WNT4- and FOXL2-driven ovarian-determining pathways.
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Affiliation(s)
- Stefan Bagheri-Fam
- Centre for Endocrinology and Metabolism, Hudson Institute of Medical Research, Monash Medical Centre, Melbourne, Victoria 3168, Australia
- Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria 3800, Australia
| | - Anthony D. Bird
- Centre for Endocrinology and Metabolism, Hudson Institute of Medical Research, Monash Medical Centre, Melbourne, Victoria 3168, Australia
| | - Liang Zhao
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Queensland 4072, Australia
| | - Janelle M. Ryan
- Centre for Endocrinology and Metabolism, Hudson Institute of Medical Research, Monash Medical Centre, Melbourne, Victoria 3168, Australia
| | - Meiyun Yong
- Centre for Endocrinology and Metabolism, Hudson Institute of Medical Research, Monash Medical Centre, Melbourne, Victoria 3168, Australia
- Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria 3800, Australia
| | - Dagmar Wilhelm
- Department of Anatomy and Neuroscience, University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Peter Koopman
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Queensland 4072, Australia
| | - Veraragavan P. Eswarakumar
- Department of Orthopaedics and Rehabilitation, Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut 06520
| | - Vincent R. Harley
- Centre for Endocrinology and Metabolism, Hudson Institute of Medical Research, Monash Medical Centre, Melbourne, Victoria 3168, Australia
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27
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Sutherland JM, Sobinoff AP, Fraser BA, Redgrove KA, Siddall NA, Koopman P, Hime GR, McLaughlin EA. RNA binding protein Musashi‐2 regulates PIWIL1 and TBX1 in mouse spermatogenesis. J Cell Physiol 2017; 233:3262-3273. [DOI: 10.1002/jcp.26168] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 08/23/2017] [Accepted: 08/24/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Jessie M. Sutherland
- School of Biomedical Science & PharmacyUniversity of NewcastleCallaghanAustralia
- Priority Research Centre in Reproductive ScienceUniversity of NewcastleCallaghanAustralia
| | - Alexander P. Sobinoff
- Priority Research Centre in Reproductive ScienceUniversity of NewcastleCallaghanAustralia
- Telomere Length Regulation GroupChildren's Medical Research Institute, University of SydneyWestmeadAustralia
| | - Barbara A. Fraser
- Priority Research Centre in Reproductive ScienceUniversity of NewcastleCallaghanAustralia
| | - Kate A. Redgrove
- Priority Research Centre in Reproductive ScienceUniversity of NewcastleCallaghanAustralia
| | | | - Peter Koopman
- Institute for Molecular BioscienceUniversity of QueenslandBrisbaneAustralia
| | - Gary R. Hime
- Anatomy and NeuroscienceUniversity of MelbourneParkvilleAustralia
| | - Eileen A. McLaughlin
- Priority Research Centre in Reproductive ScienceUniversity of NewcastleCallaghanAustralia
- School of Biological SciencesUniversity of AucklandAucklandNew Zealand
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28
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Koopman P, Sinclair A, Lovell-Badge R. Of sex and determination: marking 25 years of Randy, the sex-reversed mouse. Development 2017; 143:1633-7. [PMID: 27190031 DOI: 10.1242/dev.137372] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 03/21/2016] [Indexed: 12/31/2022]
Abstract
On Thursday 9 May 1991, the world awoke to front-page news of a breakthrough in biological research. From Washington to Wollongong, newspapers, radio and TV were abuzz with the story of a transgenic mouse in London called Randy. Why was this mouse so special? The mouse in question was a chromosomal female (XX) made male by the presence of a transgene containing the Y chromosome gene Sry This sex-reversal provided clear experimental proof that Sry was the elusive mammalian sex-determining gene. Twenty-five years on, we reflect on what this discovery meant for our understanding of how males and females arise and what remains to be understood.
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Affiliation(s)
- Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Andrew Sinclair
- Murdoch Children's Research Institute and Department of Paediatrics, The University of Melbourne, Royal Children's Hospital, Melbourne, Victoria 3052, Australia
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29
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Abstract
Sexual reproduction crucially depends on the production of sperm in males and oocytes in females. Both types of gamete arise from the same precursor, the germ cells. We review the events that characterize the development of germ cells during fetal life as they commit to, and prepare for, oogenesis or spermatogenesis. In females, fetal germ cells enter meiosis, whereas in males they delay meiosis and instead lose pluripotency, activate an irreversible program of prospermatogonial differentiation, and temporarily cease dividing. Both pathways involve sex-specific molecular signals from the somatic cells of the developing gonads and a suite of intrinsic receptors, signal transducers, transcription factors, RNA stability factors, and epigenetic modulators that act in complex, interconnected positive and negative regulatory networks. Understanding these networks is important in the contexts of the etiology, diagnosis, and treatment of infertility and gonadal cancers, and in efforts to augment human and animal fertility using stem cell approaches.
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Affiliation(s)
- Cassy Spiller
- School of Biomedical Sciences, The University of Queensland, Brisbane QLD 4072, Australia
| | - Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane QLD 4072, Australia;
| | - Josephine Bowles
- School of Biomedical Sciences, The University of Queensland, Brisbane QLD 4072, Australia
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30
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Desteghe L, Engelhard L, Vijgen J, Koopman P, Dilling-Boer D, Schurmans J, Dendale P, Heidbuchel H. P817Effect of individualised education sessions on the knowledge level of patients with atrial fibrillation. Europace 2017. [DOI: 10.1093/ehjci/eux151] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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31
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Koopman P, Vanhentenrijk S, Schurmans J, Dilling-Boer D, Vijgen J. P1403Pulmonary vein isolation using laser balloon as compared to standard radiofrequency catheter ablation. Europace 2017. [DOI: 10.1093/ehjci/eux158.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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32
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Koopman P, Jehoul P, Keskin M, Van Beveren J, Van Eyken J, Schurmans J, Dilling-Boer D, Vijgen J, Volders PG, Gorgels AP. 188Relation between terminal QRS axis and response to cardiac resynchronization therapy. Europace 2017. [DOI: 10.1093/ehjci/eux137.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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33
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Fontaine F, Overman J, Moustaqil M, Mamidyala S, Salim A, Narasimhan K, Prokoph N, Robertson AAB, Lua L, Alexandrov K, Koopman P, Capon RJ, Sierecki E, Gambin Y, Jauch R, Cooper MA, Zuegg J, Francois M. Small-Molecule Inhibitors of the SOX18 Transcription Factor. Cell Chem Biol 2017; 24:346-359. [PMID: 28163017 DOI: 10.1016/j.chembiol.2017.01.003] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 11/14/2016] [Accepted: 01/10/2017] [Indexed: 12/13/2022]
Abstract
Pharmacological modulation of transcription factors (TFs) has only met little success over the past four decades. This is mostly due to standard drug discovery approaches centered on blocking protein/DNA binding or interfering with post-translational modifications. Recent advances in the field of TF biology have revealed a central role of protein-protein interaction in their mode of action. In an attempt to modulate the activity of SOX18 TF, a known regulator of vascular growth in development and disease, we screened a marine extract library for potential small-molecule inhibitors. We identified two compounds, which inspired a series of synthetic SOX18 inhibitors, able to interfere with the SOX18 HMG DNA-binding domain, and to disrupt HMG-dependent protein-protein interaction with RBPJ. These compounds also perturbed SOX18 transcriptional activity in a cell-based reporter gene system. This approach may prove useful in developing a new class of anti-angiogenic compounds based on the inhibition of TF activity.
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Affiliation(s)
- Frank Fontaine
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Jeroen Overman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Mehdi Moustaqil
- Single Molecule Science, Lowy Cancer Research Centre, The University of New South Wales, Sydney, NSW 2031, Australia
| | - Sreeman Mamidyala
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Angela Salim
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Kamesh Narasimhan
- Laboratory for Structural Biochemistry, Genome Institute of Singapore, 60 Biopolis Street, Singapore 138672, Singapore
| | - Nina Prokoph
- Laboratory for Structural Biochemistry, Genome Institute of Singapore, 60 Biopolis Street, Singapore 138672, Singapore
| | - Avril A B Robertson
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Linda Lua
- Protein Expression Facility, The University of Queensland, St. Lucia, QLD 4072, Australia
| | - Kirill Alexandrov
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Robert J Capon
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Emma Sierecki
- Single Molecule Science, Lowy Cancer Research Centre, The University of New South Wales, Sydney, NSW 2031, Australia
| | - Yann Gambin
- Single Molecule Science, Lowy Cancer Research Centre, The University of New South Wales, Sydney, NSW 2031, Australia
| | - Ralf Jauch
- Genome Regulation Laboratory, Drug Discovery Pipeline, Key Laboratory of Regenerative Biology, Joint School of Life Sciences, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, Guangdong 510530, China; Guangzhou Medical University, Guangzhou 511436, China
| | - Matthew A Cooper
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Johannes Zuegg
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia.
| | - Mathias Francois
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia.
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34
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Gonen N, Quinn A, O'Neill HC, Koopman P, Lovell-Badge R. Correction: Normal Levels of Sox9 Expression in the Developing Mouse Testis Depend on the TES/TESCO Enhancer, but This Does Not Act Alone. PLoS Genet 2017; 13:e1006584. [PMID: 28146551 PMCID: PMC5287446 DOI: 10.1371/journal.pgen.1006584] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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35
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Overman J, Fontaine F, Moustaqil M, Mittal D, Sierecki E, Sacilotto N, Zuegg J, Robertson AAB, Holmes K, Salim AA, Mamidyala S, Butler MS, Robinson AS, Lesieur E, Johnston W, Alexandrov K, Black BL, Hogan BM, De Val S, Capon RJ, Carroll JS, Bailey TL, Koopman P, Jauch R, Smyth MJ, Cooper MA, Gambin Y, Francois M. Pharmacological targeting of the transcription factor SOX18 delays breast cancer in mice. eLife 2017; 6:e21221. [PMID: 28137359 PMCID: PMC5283831 DOI: 10.7554/elife.21221] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Accepted: 12/07/2016] [Indexed: 12/31/2022] Open
Abstract
Pharmacological targeting of transcription factors holds great promise for the development of new therapeutics, but strategies based on blockade of DNA binding, nuclear shuttling, or individual protein partner recruitment have yielded limited success to date. Transcription factors typically engage in complex interaction networks, likely masking the effects of specifically inhibiting single protein-protein interactions. Here, we used a combination of genomic, proteomic and biophysical methods to discover a suite of protein-protein interactions involving the SOX18 transcription factor, a known regulator of vascular development and disease. We describe a small-molecule that is able to disrupt a discrete subset of SOX18-dependent interactions. This compound selectively suppressed SOX18 transcriptional outputs in vitro and interfered with vascular development in zebrafish larvae. In a mouse pre-clinical model of breast cancer, treatment with this inhibitor significantly improved survival by reducing tumour vascular density and metastatic spread. Our studies validate an interactome-based molecular strategy to interfere with transcription factor activity, for the development of novel disease therapeutics.
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Affiliation(s)
- Jeroen Overman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Frank Fontaine
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Mehdi Moustaqil
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
- Single Molecule Science, Lowy Cancer Research Centre, The University of New South Wales, Sydney, Australia
| | - Deepak Mittal
- Immunology in Cancer and Infection Laboratory, QIMR Berghofer Medical Research Institute, Herston, Australia
| | - Emma Sierecki
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
- Single Molecule Science, Lowy Cancer Research Centre, The University of New South Wales, Sydney, Australia
| | - Natalia Sacilotto
- Ludwig Institute for Cancer Research, Nuffield Department of Clinical Medicine, The University of Oxford, Oxford, United Kingdom
| | - Johannes Zuegg
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Avril AB Robertson
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Kelly Holmes
- Cancer Research UK, The University of Cambridge, Li Ka Shing Centre, Cambridge, United Kingdom
| | - Angela A Salim
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Sreeman Mamidyala
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Mark S Butler
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Ashley S Robinson
- Cardiovascular Research Institute, The University of California, San Francisco, San Francisco, United States
| | - Emmanuelle Lesieur
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Wayne Johnston
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Kirill Alexandrov
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Brian L Black
- Cardiovascular Research Institute, The University of California, San Francisco, San Francisco, United States
| | - Benjamin M Hogan
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Sarah De Val
- Ludwig Institute for Cancer Research, Nuffield Department of Clinical Medicine, The University of Oxford, Oxford, United Kingdom
| | - Robert J Capon
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Jason S Carroll
- Cancer Research UK, The University of Cambridge, Li Ka Shing Centre, Cambridge, United Kingdom
| | - Timothy L Bailey
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Ralf Jauch
- Genome Regulation Laboratory, Drug Discovery Pipeline, CAS Key Laboratory of Regenerative Biology, Joint School of Life Sciences, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- Guangzhou Medical University, Guangzhou, China
| | - Mark J Smyth
- Immunology in Cancer and Infection Laboratory, QIMR Berghofer Medical Research Institute, Herston, Australia
- School of Medicine, The University of Queensland, Herston, Australia
| | - Matthew A Cooper
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Yann Gambin
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
- Single Molecule Science, Lowy Cancer Research Centre, The University of New South Wales, Sydney, Australia
| | - Mathias Francois
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
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36
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Zhao L, Arsenault M, Ng ET, Longmuss E, Chau TCY, Hartwig S, Koopman P. SOX4 regulates gonad morphogenesis and promotes male germ cell differentiation in mice. Dev Biol 2017; 423:46-56. [PMID: 28118982 DOI: 10.1016/j.ydbio.2017.01.013] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 12/14/2016] [Accepted: 01/09/2017] [Indexed: 01/13/2023]
Abstract
The group C SOX transcription factors SOX4, -11 and -12 play important and mutually overlapping roles in development of a number of organs. Here, we examined the role of SoxC genes during gonadal development in mice. All three genes were expressed in developing gonads of both sexes, predominantly in somatic cells, with Sox4 being most strongly expressed. Sox4 deficiency resulted in elongation of both ovaries and testes, and an increased number of testis cords. While female germ cells entered meiosis normally, male germ cells showed reduced levels of differentiation markers Nanos2 and Dnmt3l and increased levels of pluripotency genes Cripto and Nanog, suggesting that SOX4 may normally act to restrict the pluripotency period of male germ cells and ensure their proper differentiation. Finally, our data reveal that SOX4 (and, to a lesser extent, SOX11 and -12) repressed transcription of the sex-determining gene Sox9 via an upstream testis-specific enhancer core (TESCO) element in fetal gonads, raising the possibility that SOXC proteins may function as transcriptional repressors in a context-dependent manner.
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Affiliation(s)
- Liang Zhao
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Michel Arsenault
- Department of Biomedical Sciences, Atlantic Veterinary College, University of Prince Edward Island,550 University Avenue, Charlottetown, PE, Canada C1A 4P3
| | - Ee Ting Ng
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Enya Longmuss
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Tevin Chui-Ying Chau
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Sunny Hartwig
- Department of Biomedical Sciences, Atlantic Veterinary College, University of Prince Edward Island,550 University Avenue, Charlottetown, PE, Canada C1A 4P3
| | - Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia.
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37
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Abstract
The distinct sex phenotypes of male and female hinge on the development of the fetal gonads as testes or ovaries, in turn, regulated by the molecular genetic machinery of sex determination. Here, I discuss five aspects of mammalian gonadal development that distinguish it from other examples of organogenesis, and continue to surprise and fascinate. Let's face it: males and females are very different animals-so much so, that for any species there are really two developmental biologies, not one. Humans have been intrigued by the differences between men and women since the beginning of recorded history, and presumably long before. As a developmental biologist, it is especially fascinating to ask how the differences between the sexes arise. Finding the answers involves a stimulating mix of molecular genetics, cell biology, and developmental anatomy. Since our sex phenotype depends critically on the formation of testes or ovaries in the embryo, research efforts focus largely on the genetic control of sex determination and the organogenesis of the gonads. After half a lifetime, I am still busy delving into these issues. In this chapter, I attempt to rationalize this enduring fascination by describing five aspects of sex development that continue to captivate.
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Affiliation(s)
- Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia.
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38
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Eggers S, Sadedin S, van den Bergen JA, Robevska G, Ohnesorg T, Hewitt J, Lambeth L, Bouty A, Knarston IM, Tan TY, Cameron F, Werther G, Hutson J, O'Connell M, Grover SR, Heloury Y, Zacharin M, Bergman P, Kimber C, Brown J, Webb N, Hunter MF, Srinivasan S, Titmuss A, Verge CF, Mowat D, Smith G, Smith J, Ewans L, Shalhoub C, Crock P, Cowell C, Leong GM, Ono M, Lafferty AR, Huynh T, Visser U, Choong CS, McKenzie F, Pachter N, Thompson EM, Couper J, Baxendale A, Gecz J, Wheeler BJ, Jefferies C, MacKenzie K, Hofman P, Carter P, King RI, Krausz C, van Ravenswaaij-Arts CMA, Looijenga L, Drop S, Riedl S, Cools M, Dawson A, Juniarto AZ, Khadilkar V, Khadilkar A, Bhatia V, Dũng VC, Atta I, Raza J, Thi Diem Chi N, Hao TK, Harley V, Koopman P, Warne G, Faradz S, Oshlack A, Ayers KL, Sinclair AH. Disorders of sex development: insights from targeted gene sequencing of a large international patient cohort. Genome Biol 2016; 17:243. [PMID: 27899157 PMCID: PMC5126855 DOI: 10.1186/s13059-016-1105-y] [Citation(s) in RCA: 188] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 11/10/2016] [Indexed: 01/20/2023] Open
Abstract
Background Disorders of sex development (DSD) are congenital conditions in which chromosomal, gonadal, or phenotypic sex is atypical. Clinical management of DSD is often difficult and currently only 13% of patients receive an accurate clinical genetic diagnosis. To address this we have developed a massively parallel sequencing targeted DSD gene panel which allows us to sequence all 64 known diagnostic DSD genes and candidate genes simultaneously. Results We analyzed DNA from the largest reported international cohort of patients with DSD (278 patients with 46,XY DSD and 48 with 46,XX DSD). Our targeted gene panel compares favorably with other sequencing platforms. We found a total of 28 diagnostic genes that are implicated in DSD, highlighting the genetic spectrum of this disorder. Sequencing revealed 93 previously unreported DSD gene variants. Overall, we identified a likely genetic diagnosis in 43% of patients with 46,XY DSD. In patients with 46,XY disorders of androgen synthesis and action the genetic diagnosis rate reached 60%. Surprisingly, little difference in diagnostic rate was observed between singletons and trios. In many cases our findings are informative as to the likely cause of the DSD, which will facilitate clinical management. Conclusions Our massively parallel sequencing targeted DSD gene panel represents an economical means of improving the genetic diagnostic capability for patients affected by DSD. Implementation of this panel in a large cohort of patients has expanded our understanding of the underlying genetic etiology of DSD. The inclusion of research candidate genes also provides an invaluable resource for future identification of novel genes. Electronic supplementary material The online version of this article (doi:10.1186/s13059-016-1105-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Stefanie Eggers
- Murdoch Childrens Research Institute, Melbourne, VIC, Australia.,Victorian Clinical Genetic Services, Melbourne, VIC, Australia
| | - Simon Sadedin
- Murdoch Childrens Research Institute, Melbourne, VIC, Australia.,Department of Paediatrics, University of Melbourne, Melbourne, VIC, Australia
| | | | | | - Thomas Ohnesorg
- Murdoch Childrens Research Institute, Melbourne, VIC, Australia
| | - Jacqueline Hewitt
- Murdoch Childrens Research Institute, Melbourne, VIC, Australia.,University of Melbourne, School of Bioscience, Melbourne, VIC, Australia.,Department Of Paediatric Urology, Monash Children's Hospital, Clayton, VIC, Australia
| | - Luke Lambeth
- Murdoch Childrens Research Institute, Melbourne, VIC, Australia
| | - Aurore Bouty
- Murdoch Childrens Research Institute, Melbourne, VIC, Australia.,The Royal Children's Hospital Melbourne, Melbourne, VIC, Australia
| | - Ingrid M Knarston
- Murdoch Childrens Research Institute, Melbourne, VIC, Australia.,Department of Paediatrics, University of Melbourne, Melbourne, VIC, Australia
| | - Tiong Yang Tan
- Murdoch Childrens Research Institute, Melbourne, VIC, Australia.,Department of Paediatrics, University of Melbourne, Melbourne, VIC, Australia.,The Royal Children's Hospital Melbourne, Melbourne, VIC, Australia.,Victorian Clinical Genetic Services, Melbourne, VIC, Australia
| | - Fergus Cameron
- Murdoch Childrens Research Institute, Melbourne, VIC, Australia.,The Royal Children's Hospital Melbourne, Melbourne, VIC, Australia
| | - George Werther
- Murdoch Childrens Research Institute, Melbourne, VIC, Australia.,The Royal Children's Hospital Melbourne, Melbourne, VIC, Australia
| | - John Hutson
- Murdoch Childrens Research Institute, Melbourne, VIC, Australia.,Department of Paediatrics, University of Melbourne, Melbourne, VIC, Australia
| | - Michele O'Connell
- Murdoch Childrens Research Institute, Melbourne, VIC, Australia.,The Royal Children's Hospital Melbourne, Melbourne, VIC, Australia
| | - Sonia R Grover
- Murdoch Childrens Research Institute, Melbourne, VIC, Australia.,Department of Paediatrics, University of Melbourne, Melbourne, VIC, Australia.,The Royal Children's Hospital Melbourne, Melbourne, VIC, Australia
| | - Yves Heloury
- Murdoch Childrens Research Institute, Melbourne, VIC, Australia.,The Royal Children's Hospital Melbourne, Melbourne, VIC, Australia
| | - Margaret Zacharin
- Murdoch Childrens Research Institute, Melbourne, VIC, Australia.,The Royal Children's Hospital Melbourne, Melbourne, VIC, Australia
| | - Philip Bergman
- Department of Paediatric Endocrinology and Diabetes, Monash Children's Hospital, Clayton, VIC, Australia.,Monash Medical Centre, Clayton, VIC, Australia
| | - Chris Kimber
- Monash Children's Hospital, Clayton, VIC, Australia
| | - Justin Brown
- Department of Paediatric Endocrinology and Diabetes, Monash Children's Hospital, Clayton, VIC, Australia.,Department of Paediatrics, Monash University, Clayton, VIC, Australia
| | - Nathalie Webb
- Department Of Paediatric Urology, Monash Children's Hospital, Clayton, VIC, Australia
| | - Matthew F Hunter
- Department of Paediatrics, Monash University, Clayton, VIC, Australia.,Monash Genetics, Monash Health, Clayton, VIC, Australia
| | - Shubha Srinivasan
- The Children's Hospital at Westmead, Institute of Endocrinology and Diabetes, Westmead, NSW, Australia
| | - Angela Titmuss
- The Children's Hospital at Westmead, Institute of Endocrinology and Diabetes, Westmead, NSW, Australia
| | - Charles F Verge
- Sydney Children's Hospital, Randwick, NSW, Australia.,School of Women's and Children's Health, UNSW, Sydney, NSW, Australia
| | - David Mowat
- Department of Medical Genetics, Sydney Children's Hospital, Randwick, NSW, Australia
| | - Grahame Smith
- Urology and Clinical Programs, The Children's Hospital at Westmead, Westmead, NSW, Australia.,The University of Sydney, Westmead, NSW, Australia
| | - Janine Smith
- Department of Clinical Genetics, The Children's Hospital at Westmead, Westmead, NSW, Australia
| | - Lisa Ewans
- Department of Medical Genomics, Royal Prince Alfred Hospital, Camperdown, NSW, Australia.,Genetic Medicine, Sydney Medical School, University of Sydney, Sydney, NSW, Australia
| | - Carolyn Shalhoub
- Department of Medical Genetics, Sydney Children's Hospital, Randwick, NSW, Australia
| | - Patricia Crock
- John Hunter Children's Hospital, New Lambton Heights, NSW, Australia
| | - Chris Cowell
- The Children's Hospital at Westmead, Institute of Endocrinology and Diabetes, Westmead, NSW, Australia
| | - Gary M Leong
- Department of Paediatric Endocrinology and Diabetes, Lady Cilento Children's Hospital, Brisbane, QLD, Australia
| | - Makato Ono
- Department of Paediatrics, Tokyo Bay Medical Centre, Tokyo, Chiba, Japan
| | - Antony R Lafferty
- Centenary Hospital for Women and Children, Canberra, ACT, Australia.,ANU Medical School, Canberra, ACT, Australia
| | - Tony Huynh
- Department of Paediatric Endocrinology and Diabetes, Lady Cilento Children's Hospital, Brisbane, QLD, Australia
| | - Uma Visser
- Sydney Children's Hospital, Randwick, NSW, Australia
| | - Catherine S Choong
- Department of Endocrinology and Diabetes, Princess Margaret Hospital, Subiaco, WA, Australia.,School of Paediatrics and Child Health, The University of Western Australia, Crawley, WA, Australia
| | - Fiona McKenzie
- School of Paediatrics and Child Health, The University of Western Australia, Crawley, WA, Australia.,Genetic Services of Western Australia, King Edward Memorial Hospital, Subiaco, WA, Australia
| | - Nicholas Pachter
- School of Paediatrics and Child Health, The University of Western Australia, Crawley, WA, Australia.,Genetic Services of Western Australia, King Edward Memorial Hospital, Subiaco, WA, Australia
| | - Elizabeth M Thompson
- SA Clinical Genetics Service, SA Pathology at the Women's and Children's Hospital, North Adelaide, SA, Australia.,School of Medicine, University of Adelaide, North Terrace, Adelaide, SA, Australia
| | - Jennifer Couper
- Women's and Children's Hospital and Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Anne Baxendale
- SA Clinical Genetics Service, SA Pathology at the Women's and Children's Hospital, North Adelaide, SA, Australia
| | - Jozef Gecz
- School of Medicine and The Robinson Research Institute, The University of Adelaide, Adelaide, SA, Australia.,South Australian Health and Medical Research Institute, Adelaide, SA, Australia
| | - Benjamin J Wheeler
- Department of Women's and Children's Health, University of Otago, Dunedin, New Zealand
| | - Craig Jefferies
- Diabetes and Endocrinology, Auckland District Health Board, Auckland, New Zealand
| | | | - Paul Hofman
- Liggins Institute, University of Auckland, Auckland, New Zealand
| | - Philippa Carter
- Starship Paediatric Diabetes and Endocrinology, Auckland, New Zealand
| | - Richard I King
- Canterbury Health Laboratories, Christchurch, Canterbury, New Zealand
| | - Csilla Krausz
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Florence, Italy
| | | | - Leendert Looijenga
- Department of Pathology, Josephine Nefkens Institute, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - Sten Drop
- Department of Paediatrics, Division of Endocrinology, Sophia Children's Hospital, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - Stefan Riedl
- St Anna Children's Hospital, Vienna, Austria.,Paediatric Department, Medical University of Vienna, Vienna, Austria
| | - Martine Cools
- Department of Paediatric Endocrinology, Ghent University Hospital, Ghent, Belgium
| | - Angelika Dawson
- Genomic Laboratory, Diagnostic Services of Manitoba and Genetics & Metabolism Program, WRHA, Winnipeg, MB, Canada.,Department Biochemistry & Medical Genetics and Paediatrics & Child Health, University of Manitoba, Winnipeg, MB, Canada
| | - Achmad Zulfa Juniarto
- Division of Human Genetics, Centre for Biomedical Research Faculty of Medicine Diponegoro University (FMDU), Semarang, Indonesia
| | - Vaman Khadilkar
- Growth and Pediatric Endocrine Clinic, Hirabai Cowasji Jehangir Medical Research Institute, Pune, India.,Hirabai Cowasji Jehangir Medical Research Institute, Pune, India
| | - Anuradha Khadilkar
- Growth and Pediatric Endocrine Clinic, Hirabai Cowasji Jehangir Medical Research Institute, Pune, India.,Hirabai Cowasji Jehangir Medical Research Institute, Pune, India
| | | | - Vũ Chí Dũng
- Department of Endocrinology, Metabolism and Genetics National Children's Hospital, Hanoi, Vietnam
| | - Irum Atta
- National Institute of Child Health, Karachi, Pakistan
| | - Jamal Raza
- National Institute of Child Health, Karachi, Pakistan
| | | | - Tran Kiem Hao
- Paediatric Centre, Hue Central Hospital, Hue city, Vietnam
| | - Vincent Harley
- Hudson Institute of Medical Research, Clayton, VIC, Australia
| | - Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Garry Warne
- Department of Paediatrics, University of Melbourne, Melbourne, VIC, Australia.,The Royal Children's Hospital Melbourne, Melbourne, VIC, Australia
| | - Sultana Faradz
- Division of Human Genetics, Centre for Biomedical Research Faculty of Medicine Diponegoro University (FMDU), Semarang, Indonesia
| | - Alicia Oshlack
- Murdoch Childrens Research Institute, Melbourne, VIC, Australia.,University of Melbourne, School of Bioscience, Melbourne, VIC, Australia
| | - Katie L Ayers
- Murdoch Childrens Research Institute, Melbourne, VIC, Australia.,Department of Paediatrics, University of Melbourne, Melbourne, VIC, Australia
| | - Andrew H Sinclair
- Murdoch Childrens Research Institute, Melbourne, VIC, Australia. .,Department of Paediatrics, University of Melbourne, Melbourne, VIC, Australia.
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Alankarage D, Lavery R, Svingen T, Kelly S, Ludbrook L, Bagheri-Fam S, Koopman P, Harley V. SOX9 regulates expression of the male fertility gene Ets variant factor 5 (ETV5) during mammalian sex development. Int J Biochem Cell Biol 2016; 79:41-51. [PMID: 27498191 DOI: 10.1016/j.biocel.2016.08.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 08/01/2016] [Accepted: 08/03/2016] [Indexed: 10/21/2022]
Abstract
In humans, dysregulation of the sex determining gene SRY-box 9 (SOX9) leads to disorders of sex development (DSD). In mice, knock-out of Sox9 prior to sex determination leads to XY sex reversal, while Sox9 inactivation after sex determination leads to spermatogenesis defects. SOX9 specifies the differentiation and function of Sertoli cells from somatic cell precursors, which then orchestrate the development and maintenance of other testicular cell types, largely through unknown mechanisms. Here, we describe a novel testicular target gene of SOX9, Ets variant factor 5 (ETV5), a transcription factor responsible for maintaining the spermatogonial stem cell niche. Etv5 was highly expressed in wild-type XY but not XX mouse fetal gonads, with ETV5 protein localized in the Sertoli cells, interstitial cells and germ cells of the testis. In XY Sox9 knock-out gonads, Etv5 expression was strongly down-regulated. Similarly, knock-down of SOX9 in the human Sertoli-like cell line NT2/D1 caused a decrease in ETV5 gene expression. Transcriptomic analysis of NT2/D1 cells over-expressing SOX9 showed that ETV5 expression was increased in response to SOX9. Moreover, chromatin immunoprecipitation of these cells, as well as of embryonic mouse gonads, showed direct binding of SOX9 to ETV5 regulatory regions. We demonstrate that SOX9 was able to activate ETV5 expression via a conserved SOX site in the 5' regulatory region, mutation of which led to loss of activation. In conclusion, we present a novel target gene of SOX9 in the testis, and suggest that SOX9 regulation of ETV5 contributes to the control of male fertility.
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Affiliation(s)
- Dimuthu Alankarage
- Centre for Reproductive Health, Hudson Institute of Medical Research, Melbourne, Australia; Department of Biochemistry and Molecular Biology, Monash University, Melbourne, Australia
| | - Rowena Lavery
- Centre for Reproductive Health, Hudson Institute of Medical Research, Melbourne, Australia
| | - Terje Svingen
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Sabine Kelly
- Centre for Reproductive Health, Hudson Institute of Medical Research, Melbourne, Australia
| | - Louisa Ludbrook
- Centre for Reproductive Health, Hudson Institute of Medical Research, Melbourne, Australia
| | - Stefan Bagheri-Fam
- Centre for Reproductive Health, Hudson Institute of Medical Research, Melbourne, Australia
| | - Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Vincent Harley
- Centre for Reproductive Health, Hudson Institute of Medical Research, Melbourne, Australia; Department of Biochemistry and Molecular Biology, Monash University, Melbourne, Australia.
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Cools T, Daerden T, Herbots L, Geukens R, Verwerft J, Koopman P, Dilling-Boer D, Hansen D, Vranckx P, Dendale P. Clinical benefit of atrio-ventricular delay optimization in patients with a dual-chamber pacemaker: a pilot study. Acta Cardiol 2016; 71:257-265. [PMID: 27594120 DOI: 10.2143/ac.71.3.3152085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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41
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Rios-Rojas C, Spiller C, Bowles J, Koopman P. Germ cells influence cord formation and leydig cell gene expression during mouse testis development. Dev Dyn 2016; 245:433-44. [DOI: 10.1002/dvdy.24371] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 10/15/2015] [Accepted: 11/18/2015] [Indexed: 11/07/2022] Open
Affiliation(s)
- Clarissa Rios-Rojas
- Institute for Molecular Bioscience; The University of Queensland; Brisbane Australia
| | - Cassy Spiller
- Institute for Molecular Bioscience; The University of Queensland; Brisbane Australia
| | - Josephine Bowles
- Institute for Molecular Bioscience; The University of Queensland; Brisbane Australia
| | - Peter Koopman
- Institute for Molecular Bioscience; The University of Queensland; Brisbane Australia
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Holm JB, Mazaud-Guittot S, Danneskiold-Samsøe NB, Chalmey C, Jensen B, Nørregård MM, Hansen CH, Styrishave B, Svingen T, Vinggaard AM, Koch HM, Bowles J, Koopman P, Jégou B, Kristiansen K, Kristensen DM. Intrauterine Exposure to Paracetamol and Aniline Impairs Female Reproductive Development by Reducing Follicle Reserves and Fertility. Toxicol Sci 2016; 150:178-89. [DOI: 10.1093/toxsci/kfv332] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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43
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Spiller CM, Gillis AJM, Burnet G, Stoop H, Koopman P, Bowles J, Looijenga LHJ. Cripto: Expression, epigenetic regulation and potential diagnostic use in testicular germ cell tumors. Mol Oncol 2015; 10:526-37. [PMID: 26654129 DOI: 10.1016/j.molonc.2015.11.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 11/03/2015] [Accepted: 11/03/2015] [Indexed: 01/27/2023] Open
Abstract
Type II germ cell tumors arise after puberty from a germ cell that was incorrectly programmed during fetal life. Failure of testicular germ cells to properly differentiate can lead to the formation of germ cell neoplasia in situ of the testis; this precursor cell invariably gives rise to germ cell cancer after puberty. The Nodal co-receptor Cripto is expressed transiently during normal germ cell development and is ectopically expressed in non-seminomas that arise from germ cell neoplasia in situ, suggesting that its aberrant expression may underlie germ cell dysregulation and hence germ cell cancer. Here we investigated methylation of the Cripto promoter in mouse germ cells and human germ cell cancer and correlated this with the level of CRIPTO protein expression. We found hypomethylation of the CRIPTO promoter in undifferentiated fetal germ cells, embryonal carcinoma and seminomas, but hypermethylation in differentiated fetal germ cells and the differentiated types of non-seminomas. CRIPTO protein was strongly expressed in germ cell neoplasia in situ along with embryonal carcinoma, yolk sac tumor and seminomas. Further, cleaved CRIPTO was detected in media from seminoma and embryonal carcinoma cell lines, suggesting that cleaved CRIPTO may provide diagnostic indication of germ cell cancer. Accordingly, CRIPTO was detectable in serum from 6/15 patients with embryonal carcinoma, 5/15 patients with seminoma, 4/5 patients with germ cell neoplasia in situ cells only and in 1/15 control patients. These findings suggest that CRIPTO expression may be a useful serological marker for diagnostic and/or prognostic purposes during germ cell cancer management.
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Affiliation(s)
- Cassy M Spiller
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Ad J M Gillis
- Department of Pathology, Erasmus MC - University Medical Center, Rotterdam, 3015, The Netherlands
| | - Guillaume Burnet
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia; Departement de Biologie, Ecole Normale Superieure de Cachan, Cachan, France
| | - Hans Stoop
- Department of Pathology, Erasmus MC - University Medical Center, Rotterdam, 3015, The Netherlands
| | - Peter Koopman
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Josephine Bowles
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Leendert H J Looijenga
- Department of Pathology, Erasmus MC - University Medical Center, Rotterdam, 3015, The Netherlands.
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Larney C, Bailey TL, Koopman P. Conservation analysis of sequences flanking the testis-determining gene Sry in 17 mammalian species. BMC Dev Biol 2015; 15:34. [PMID: 26444262 PMCID: PMC4595323 DOI: 10.1186/s12861-015-0085-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 09/25/2015] [Indexed: 11/10/2022]
Abstract
BACKGROUND Sex determination in mammals requires expression of the Y-linked gene Sry in the bipotential genital ridges of the XY embryo. Even minor delay of the onset of Sry expression can result in XY sex reversal, highlighting the need for accurate gene regulation during sex determination. However, the location of critical regulatory elements remains unknown. Here, we analysed Sry flanking sequences across many species, using newly available genome sequences and computational tools, to better understand Sry's genomic context and to identify conserved regions predictive of functional roles. METHODS Flanking sequences from 17 species were analysed using both global and local sequence alignment methods. Multiple motif searches were employed to characterise common motifs in otherwise unconserved sequence. RESULTS We identified position-specific conservation of binding motifs for multiple transcription factor families, including GATA binding factors and Oct/Sox dimers. In contrast with the landscape of extremely low sequence conservation around the Sry coding region, our analysis highlighted a strongly conserved interval of ~106 bp within the Sry promoter (which we term the Sry Proximal Conserved Interval, SPCI). We further report that inverted repeats flanking murine Sry are much larger than previously recognised. CONCLUSIONS The unusually fast pace of sequence drift on the Y chromosome sharpens the likely functional significance of both the SPCI and the identified binding motifs, providing a basis for future studies of the role(s) of these elements in Sry regulation.
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Affiliation(s)
- Christian Larney
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Timothy L Bailey
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, 4072, Australia.
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45
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Bagheri-Fam S, Ono M, Li L, Zhao L, Ryan J, Lai R, Katsura Y, Rossello FJ, Koopman P, Scherer G, Bartsch O, Eswarakumar JVP, Harley VR. FGFR2 mutation in 46,XY sex reversal with craniosynostosis. Hum Mol Genet 2015; 24:6699-710. [PMID: 26362256 DOI: 10.1093/hmg/ddv374] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 09/08/2015] [Indexed: 12/29/2022] Open
Abstract
Patients with 46,XY gonadal dysgenesis (GD) exhibit genital anomalies, which range from hypospadias to complete male-to-female sex reversal. However, a molecular diagnosis is made in only 30% of cases. Heterozygous mutations in the human FGFR2 gene cause various craniosynostosis syndromes including Crouzon and Pfeiffer, but testicular defects were not reported. Here, we describe a patient whose features we would suggest represent a new FGFR2-related syndrome, craniosynostosis with XY male-to-female sex reversal or CSR. The craniosynostosis patient was chromosomally XY, but presented as a phenotypic female due to complete GD. DNA sequencing identified the FGFR2c heterozygous missense mutation, c.1025G>C (p.Cys342Ser). Substitution of Cys342 by Ser or other amino acids (Arg/Phe/Try/Tyr) has been previously reported in Crouzon and Pfeiffer syndrome. We show that the 'knock-in' Crouzon mouse model Fgfr2c(C342Y/C342Y) carrying a Cys342Tyr substitution displays XY gonadal sex reversal with variable expressivity. We also show that despite FGFR2c-Cys342Tyr being widely considered a gain-of-function mutation, Cys342Tyr substitution in the gonad leads to loss of function, as demonstrated by sex reversal in Fgfr2c(C342Y/-) mice carrying the knock-in allele on a null background. The rarity of our patient suggests the influence of modifier genes which exacerbated the testicular phenotype. Indeed, patient whole exome analysis revealed several potential modifiers expressed in Sertoli cells at the time of testis determination in mice. In summary, this study identifies the first FGFR2 mutation in a 46,XY GD patient. We conclude that, in certain rare genetic contexts, maintaining normal levels of FGFR2 signaling is important for human testis determination.
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Affiliation(s)
- Stefan Bagheri-Fam
- Centre for Reproductive Health, Hudson Institute of Medical Research, Melbourne, Australia, Department of Anatomy and Developmental Biology,
| | - Makoto Ono
- Centre for Reproductive Health, Hudson Institute of Medical Research, Melbourne, Australia
| | - Li Li
- Department of Orthopedics and Rehabilitation, Department of Pharmacology, Yale University School of Medicine, New Haven, CT, USA
| | - Liang Zhao
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Janelle Ryan
- Centre for Reproductive Health, Hudson Institute of Medical Research, Melbourne, Australia
| | - Raymond Lai
- Centre for Reproductive Health, Hudson Institute of Medical Research, Melbourne, Australia
| | - Yukako Katsura
- Department of Integrative Biology, University of California Berkeley, Berkeley, USA
| | - Fernando J Rossello
- Department of Anatomy and Developmental Biology, Australian Regenerative Medicine Institute, Monash University, Clayton, VIC, Australia
| | - Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Gerd Scherer
- Institute of Human Genetics, University of Freiburg, Freiburg, Germany and
| | - Oliver Bartsch
- Institute of Human Genetics, University Medical Centre of the Johannes Gutenberg University, Mainz, Germany
| | - Jacob V P Eswarakumar
- Department of Orthopedics and Rehabilitation, Department of Pharmacology, Yale University School of Medicine, New Haven, CT, USA
| | - Vincent R Harley
- Centre for Reproductive Health, Hudson Institute of Medical Research, Melbourne, Australia, Department of Anatomy and Developmental Biology,
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46
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Wainwright EN, Wilhelm D, Combes AN, Little MH, Koopman P. ROBO2 restricts the nephrogenic field and regulates Wolffian duct-nephrogenic cord separation. Dev Biol 2015; 404:88-102. [PMID: 26116176 DOI: 10.1016/j.ydbio.2015.05.023] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 05/28/2015] [Accepted: 05/30/2015] [Indexed: 01/03/2023]
Abstract
ROBO2 plays a key role in regulating ureteric bud (UB) formation in the embryo, with mutations in humans and mice leading to supernumerary kidneys. Previous studies have established that the number and position of UB outgrowths is determined by the domain of metanephric mesenchymal Gdnf expression, which is expanded anteriorly in Robo2 mouse mutants. To clarify how this phenotype arises, we used high-resolution 3D imaging to reveal an increase in the number of nephrogenic cord cells, leading to extension of the metanephric mesenchyme field in Robo2-null mouse embryos. Ex vivo experiments suggested a dependence of this effect on proliferative signals from the Wolffian duct. Loss of Robo2 resulted in a failure of the normal separation of the mesenchyme from the Wolffian duct/ureteric epithelium, suggesting that aberrant juxtaposition of these two compartments in Robo2-null mice exposes the mesenchyme to abnormally high levels of proliferative stimuli. Our data suggest a new model in which SLIT-ROBO signalling acts not by attenuating Gdnf expression or activity, but instead by limiting epithelial/mesenchymal interactions in the nascent metanephros and restricting the extent of the nephrogenic field. These insights illuminate the aetiology of multiplex kidney formation in human individuals with ROBO2 mutations.
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Affiliation(s)
- Elanor N Wainwright
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Dagmar Wilhelm
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Alexander N Combes
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Melissa H Little
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Peter Koopman
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia.
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47
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McClelland KS, Bell K, Larney C, Harley VR, Sinclair AH, Oshlack A, Koopman P, Bowles J. Purification and Transcriptomic Analysis of Mouse Fetal Leydig Cells Reveals Candidate Genes for Specification of Gonadal Steroidogenic Cells1. Biol Reprod 2015; 92:145. [DOI: 10.1095/biolreprod.115.128918] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Accepted: 04/02/2015] [Indexed: 01/12/2023] Open
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48
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Sutherland JM, Sobinoff AP, Fraser BA, Redgrove KA, Davidson TL, Siddall NA, Koopman P, Hime GR, McLaughlin EA. RNA binding protein Musashi-1 directly targets Msi2 and Erh during early testis germ cell development and interacts with IPO5 upon translocation to the nucleus. FASEB J 2015; 29:2759-68. [PMID: 25782991 DOI: 10.1096/fj.14-265868] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Accepted: 02/26/2015] [Indexed: 12/19/2022]
Abstract
Controlled gene regulation during gamete development is vital for maintaining reproductive potential. During the process of gamete development, male germ cells experience extended periods of inactive transcription despite requirements for continued growth and differentiation. Spermatogenesis therefore provides an ideal model to study the effects of posttranscriptional control on gene regulation. During spermatogenesis posttranscriptional regulation is orchestrated by abundantly expressed RNA-binding proteins. One such group of RNA-binding proteins is the Musashi family, previously identified as a critical regulator of testis germ cell development and meiosis in Drosophila and also shown to be vital to sperm development and reproductive potential in the mouse. We focus in depth on the role and function of the vertebrate Musashi ortholog Musashi-1 (MSI1). Through detailed expression studies and utilizing our novel transgenic Msi1 testis-specific overexpression model, we have identified 2 unique RNA-binding targets of MSI1 in spermatogonia, Msi2 and Erh, and have demonstrated a role for MSI1 in translational regulation. We have also provided evidence to suggest that nuclear import protein, IPO5, facilitates the nuclear translocation of MSI1 to the transcriptionally silenced XY chromatin domain in meiotic pachytene spermatocytes, resulting in the release of MSI1 RNA-binding targets. This firmly establishes MSI1 as a master regulator of posttranscriptional control during early spermatogenesis and highlights the significance of the subcellular localization of RNA binding proteins in relation to their function.
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Affiliation(s)
- Jessie M Sutherland
- *School of Environmental and Life Sciences, University of Newcastle, Callaghan, New South Wales, Australia; Institute for Molecular Bioscience, University of Queensland, Brisbane, Queensland, Australia; and Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Victoria, Australia
| | - Alexander P Sobinoff
- *School of Environmental and Life Sciences, University of Newcastle, Callaghan, New South Wales, Australia; Institute for Molecular Bioscience, University of Queensland, Brisbane, Queensland, Australia; and Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Victoria, Australia
| | - Barbara A Fraser
- *School of Environmental and Life Sciences, University of Newcastle, Callaghan, New South Wales, Australia; Institute for Molecular Bioscience, University of Queensland, Brisbane, Queensland, Australia; and Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Victoria, Australia
| | - Kate A Redgrove
- *School of Environmental and Life Sciences, University of Newcastle, Callaghan, New South Wales, Australia; Institute for Molecular Bioscience, University of Queensland, Brisbane, Queensland, Australia; and Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Victoria, Australia
| | - Tara-Lynne Davidson
- *School of Environmental and Life Sciences, University of Newcastle, Callaghan, New South Wales, Australia; Institute for Molecular Bioscience, University of Queensland, Brisbane, Queensland, Australia; and Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Victoria, Australia
| | - Nicole A Siddall
- *School of Environmental and Life Sciences, University of Newcastle, Callaghan, New South Wales, Australia; Institute for Molecular Bioscience, University of Queensland, Brisbane, Queensland, Australia; and Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Victoria, Australia
| | - Peter Koopman
- *School of Environmental and Life Sciences, University of Newcastle, Callaghan, New South Wales, Australia; Institute for Molecular Bioscience, University of Queensland, Brisbane, Queensland, Australia; and Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Victoria, Australia
| | - Gary R Hime
- *School of Environmental and Life Sciences, University of Newcastle, Callaghan, New South Wales, Australia; Institute for Molecular Bioscience, University of Queensland, Brisbane, Queensland, Australia; and Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Victoria, Australia
| | - Eileen A McLaughlin
- *School of Environmental and Life Sciences, University of Newcastle, Callaghan, New South Wales, Australia; Institute for Molecular Bioscience, University of Queensland, Brisbane, Queensland, Australia; and Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Victoria, Australia
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49
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Major AT, Hogarth CA, Miyamoto Y, Sarraj MA, Smith CL, Koopman P, Kurihara Y, Jans DA, Loveland KL. Specific interaction with the nuclear transporter importin α2 can modulate paraspeckle protein 1 delivery to nuclear paraspeckles. Mol Biol Cell 2015; 26:1543-58. [PMID: 25694451 PMCID: PMC4395133 DOI: 10.1091/mbc.e14-01-0678] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Accepted: 02/12/2015] [Indexed: 12/12/2022] Open
Abstract
Paraspeckle protein 1 (PSPC1), a component of nuclear paraspeckles, is identified as an importin α2 (IMPα2) binding partner in mouse spermatogenic cells. PSPC1-IMPα2 binding modulates PSPC1 delivery to paraspeckles, highlighting the potential for regulated importin synthesis to direct RNA metabolism and cellular differentiation. Importin (IMP) superfamily members mediate regulated nucleocytoplasmic transport, which is central to key cellular processes. Although individual IMPα proteins exhibit dynamic synthesis and subcellular localization during cellular differentiation, including during spermatogenesis, little is known of how this affects cell fate. To investigate how IMPαs control cellular development, we conducted a yeast two-hybrid screen for IMPα2 cargoes in embryonic day 12.5 mouse testis, a site of peak IMPα2 expression coincident with germ-line masculization. We identified paraspeckle protein 1 (PSPC1), the original defining component of nuclear paraspeckles, as an IMPα2-binding partner. PSPC1-IMPα2 binding in testis was confirmed in immunoprecipitations and pull downs, and an enzyme-linked immunosorbent assay–based assay demonstrated direct, high-affinity PSPC1 binding to either IMPα2/IMPβ1 or IMPα6/IMPβ1. Coexpression of full-length PSPC1 and IMPα2 in HeLa cells yielded increased PSPC1 localization in nuclear paraspeckles. High-throughput image analysis of >3500 cells indicated IMPα2 levels can directly determine PSPC1-positive nuclear speckle numbers and size; a transport-deficient IMPα2 isoform or small interfering RNA knockdown of IMPα2 each reduced endogenous PSPC1 accumulation in speckles. This first validation of an IMPα2 nuclear import cargo in fetal testis provides novel evidence that PSPC1 delivery to paraspeckles, and consequently paraspeckle function, may be controlled by modulated synthesis of specific IMPs.
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Affiliation(s)
- Andrew T Major
- Department of Anatomy and Developmental Biology, Monash University, Melbourne, VIC 3800, Australia ARC Centre of Excellence in Biotechnology and Development, Australia
| | - Cathryn A Hogarth
- Center for Reproductive Biology and School of Molecular Biosciences, Washington State University, Pullman, WA 99163
| | - Yoichi Miyamoto
- ARC Centre of Excellence in Biotechnology and Development, Australia Department of Biochemistry and Molecular Biology, Monash University, Melbourne, VIC 3800, Australia
| | - Mai A Sarraj
- ARC Centre of Excellence in Biotechnology and Development, Australia MIMR-PHI Institute of Medical Research, Monash Health Translation Precinct, Clayton, VIC 3168, Australia
| | - Catherine L Smith
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC 3004, Australia
| | - Peter Koopman
- ARC Centre of Excellence in Biotechnology and Development, Australia Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD 4072, Australia
| | - Yasuyuki Kurihara
- Faculty of Engineering Science, Yokohama National University, Yokohama 2408501, Japan
| | - David A Jans
- ARC Centre of Excellence in Biotechnology and Development, Australia Department of Biochemistry and Molecular Biology, Monash University, Melbourne, VIC 3800, Australia
| | - Kate L Loveland
- Department of Anatomy and Developmental Biology, Monash University, Melbourne, VIC 3800, Australia ARC Centre of Excellence in Biotechnology and Development, Australia Department of Biochemistry and Molecular Biology, Monash University, Melbourne, VIC 3800, Australia School of Clinical Sciences, Monash Health Translation Precinct, Monash University, Clayton, VIC 3168, Australia
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50
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Rios-Rojas C, Bowles J, Koopman P. On the role of germ cells in mammalian gonad development: quiet passengers or back-seat drivers? Reproduction 2015; 149:R181-91. [PMID: 25628441 DOI: 10.1530/rep-14-0663] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In addition to their role as endocrine organs, the gonads nurture and protect germ cells, and regulate the formation of gametes competent to convey the genome to the following generation. After sex determination, gonadal somatic cells use several known signalling pathways to direct germ cell development. However, the extent to which germ cells communicate back to the soma, the molecular signals they use to do so and the significance of any such signalling remain as open questions. Herein, we review findings arising from the study of gonadal development and function in the absence of germ cells in a range of organisms. Most published studies support the view that germ cells are unimportant for foetal gonadal development in mammals, but later become critical for stabilisation of gonadal function and somatic cell phenotype. However, the lack of consistency in the data, and clear differences between mammals and other vertebrates and invertebrates, suggests that the story may not be so simple and would benefit from more careful analysis using contemporary molecular, cell biology and imaging tools.
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Affiliation(s)
- Clarissa Rios-Rojas
- Institute for Molecular BioscienceThe University of Queensland, Brisbane, Queensland 4072, Australia
| | - Josephine Bowles
- Institute for Molecular BioscienceThe University of Queensland, Brisbane, Queensland 4072, Australia
| | - Peter Koopman
- Institute for Molecular BioscienceThe University of Queensland, Brisbane, Queensland 4072, Australia
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