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Atkinson R, Georgiou M, Yang C, Szymanska K, Lahat A, Vasconcelos EJR, Ji Y, Moya Molina M, Collin J, Queen R, Dorgau B, Watson A, Kurzawa-Akanbi M, Laws R, Saxena A, Shyan Beh C, Siachisumo C, Goertler F, Karwatka M, Davey T, Inglehearn CF, McKibbin M, Lührmann R, Steel DH, Elliott DJ, Armstrong L, Urlaub H, Ali RR, Grellscheid SN, Johnson CA, Mozaffari-Jovin S, Lako M. PRPF8-mediated dysregulation of hBrr2 helicase disrupts human spliceosome kinetics and 5´-splice-site selection causing tissue-specific defects. Nat Commun 2024; 15:3138. [PMID: 38605034 PMCID: PMC11009313 DOI: 10.1038/s41467-024-47253-0] [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: 09/21/2023] [Accepted: 03/19/2024] [Indexed: 04/13/2024] Open
Abstract
The carboxy-terminus of the spliceosomal protein PRPF8, which regulates the RNA helicase Brr2, is a hotspot for mutations causing retinitis pigmentosa-type 13, with unclear role in human splicing and tissue-specificity mechanism. We used patient induced pluripotent stem cells-derived cells, carrying the heterozygous PRPF8 c.6926 A > C (p.H2309P) mutation to demonstrate retinal-specific endophenotypes comprising photoreceptor loss, apical-basal polarity and ciliary defects. Comprehensive molecular, transcriptomic, and proteomic analyses revealed a role of the PRPF8/Brr2 regulation in 5'-splice site (5'SS) selection by spliceosomes, for which disruption impaired alternative splicing and weak/suboptimal 5'SS selection, and enhanced cryptic splicing, predominantly in ciliary and retinal-specific transcripts. Altered splicing efficiency, nuclear speckles organisation, and PRPF8 interaction with U6 snRNA, caused accumulation of active spliceosomes and poly(A)+ mRNAs in unique splicing clusters located at the nuclear periphery of photoreceptors. Collectively these elucidate the role of PRPF8/Brr2 regulatory mechanisms in splicing and the molecular basis of retinal disease, informing therapeutic approaches.
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Affiliation(s)
| | - Maria Georgiou
- Biosciences Institute, Newcastle University, Newcastle, UK
| | - Chunbo Yang
- Biosciences Institute, Newcastle University, Newcastle, UK
| | | | - Albert Lahat
- Department of Biosciences, Durham University, Durham, UK
| | | | - Yanlong Ji
- Max-Planck-Institute for Multidisciplinary Sciences, Göttingen, Germany
- Institute of Clinical Chemistry, University Medical Center Göttingen, Göttingen, Germany
| | - Marina Moya Molina
- Biosciences Institute, Newcastle University, Newcastle, UK
- Newcells Biotech, Newcastle, UK
| | - Joseph Collin
- Biosciences Institute, Newcastle University, Newcastle, UK
| | - Rachel Queen
- Biosciences Institute, Newcastle University, Newcastle, UK
| | - Birthe Dorgau
- Biosciences Institute, Newcastle University, Newcastle, UK
| | - Avril Watson
- Biosciences Institute, Newcastle University, Newcastle, UK
- Newcells Biotech, Newcastle, UK
| | | | - Ross Laws
- Electron Microscopy Research Services, Newcastle University, Newcastle, UK
| | - Abhijit Saxena
- Biosciences Institute, Newcastle University, Newcastle, UK
| | - Chia Shyan Beh
- Biosciences Institute, Newcastle University, Newcastle, UK
| | | | | | | | - Tracey Davey
- Electron Microscopy Research Services, Newcastle University, Newcastle, UK
| | | | - Martin McKibbin
- Leeds Institute of Medical Research, University of Leeds, Leeds, UK
| | - Reinhard Lührmann
- Max-Planck-Institute for Multidisciplinary Sciences, Göttingen, Germany
| | - David H Steel
- Biosciences Institute, Newcastle University, Newcastle, UK
| | | | - Lyle Armstrong
- Biosciences Institute, Newcastle University, Newcastle, UK
| | - Henning Urlaub
- Max-Planck-Institute for Multidisciplinary Sciences, Göttingen, Germany
- Institute of Clinical Chemistry, University Medical Center Göttingen, Göttingen, Germany
- Göttingen Center for Molecular Biosciences, Georg August University of Göttingen, Göttingen, Germany
| | - Robin R Ali
- Centre for Cell and Gene Therapy, Kings College London, London, UK
| | - Sushma-Nagaraja Grellscheid
- Department of Biosciences, Durham University, Durham, UK
- Department of Informatics, University of Bergen, Bergen, Norway
| | - Colin A Johnson
- Leeds Institute of Medical Research, University of Leeds, Leeds, UK.
| | - Sina Mozaffari-Jovin
- Max-Planck-Institute for Multidisciplinary Sciences, Göttingen, Germany.
- Department of Medical Genetics and Medical Genetics Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Majlinda Lako
- Biosciences Institute, Newcastle University, Newcastle, UK.
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Basu B, Lake AVR, China B, Szymanska K, Wheway G, Bell S, Morrison E, Bond J, Johnson CA. Racgap1 knockdown results in cells with multiple cilia due to cytokinesis failure. Ann Hum Genet 2024; 88:45-57. [PMID: 37771269 PMCID: PMC10952936 DOI: 10.1111/ahg.12529] [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: 06/26/2023] [Revised: 08/16/2023] [Accepted: 09/07/2023] [Indexed: 09/30/2023]
Abstract
Most mammalian cells have a single primary cilium that acts as a signalling hub in mediating cellular functions. However, little is known about the mechanisms that result in aberrant supernumerary primary cilia per cell. In this study, we re-analysed a previously published whole-genome siRNA-based reverse genetic screen for genes mediating ciliogenesis to identify knockdowns that permit multi-ciliation. We identified siRNA knockdowns that caused significant formation of supernumerary cilia, validated candidate hits in different cell-lines and confirmed that RACGAP1, a component of the centralspindlin complex, was the strongest candidate hit at the whole-genome level. Following loss of RACGAP1, mother centrioles were specified correctly prior to ciliogenesis and the cilia appeared normal. Live cell imaging revealed that increased cilia incidence was caused by cytokinesis failure which led to the formation of multinucleate cells with supernumerary cilia. This suggests that the signalling mechanisms for ciliogenesis are unable to identify supernumerary centrosomes and therefore allow ciliation of duplicated centrosomes as if they were in a new diploid daughter cell. These results, demonstrating that aberrant ciliogenesis is de-coupled from cell cycle regulation, have functional implications in diseases marked by centrosomal amplification.
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Affiliation(s)
- Basudha Basu
- Division of Molecular Medicine, Leeds Institute of Medical ResearchUniversity of LeedsLeedsUK
| | - Alice V. R. Lake
- Division of Molecular Medicine, Leeds Institute of Medical ResearchUniversity of LeedsLeedsUK
| | - Becky China
- Division of Molecular Medicine, Leeds Institute of Medical ResearchUniversity of LeedsLeedsUK
| | - Katarzyna Szymanska
- Division of Molecular Medicine, Leeds Institute of Medical ResearchUniversity of LeedsLeedsUK
| | - Gabrielle Wheway
- University Hospital Southampton NHS Foundation TrustSouthamptonUK
- Faculty of Medicine, Human Development and HealthUniversity of SouthamptonSouthamptonUK
| | - Sandra Bell
- Division of Molecular Medicine, Leeds Institute of Medical ResearchUniversity of LeedsLeedsUK
| | - Ewan Morrison
- Division of Molecular Medicine, Leeds Institute of Medical ResearchUniversity of LeedsLeedsUK
| | - Jacquelyn Bond
- Division of Molecular Medicine, Leeds Institute of Medical ResearchUniversity of LeedsLeedsUK
| | - Colin A. Johnson
- Division of Molecular Medicine, Leeds Institute of Medical ResearchUniversity of LeedsLeedsUK
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Best S, Lord J, Roche M, Watson CM, Poulter JA, Bevers RPJ, Stuckey A, Szymanska K, Ellingford JM, Carmichael J, Brittain H, Toomes C, Inglehearn C, Johnson CA, Wheway G. Molecular diagnoses in the congenital malformations caused by ciliopathies cohort of the 100,000 Genomes Project. J Med Genet 2022; 59:737-747. [PMID: 34716235 PMCID: PMC9340050 DOI: 10.1136/jmedgenet-2021-108065] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [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: 07/01/2021] [Accepted: 08/27/2021] [Indexed: 12/19/2022]
Abstract
BACKGROUND Primary ciliopathies represent a group of inherited disorders due to defects in the primary cilium, the 'cell's antenna'. The 100,000 Genomes Project was launched in 2012 by Genomics England (GEL), recruiting National Health Service (NHS) patients with eligible rare diseases and cancer. Sequence data were linked to Human Phenotype Ontology (HPO) terms entered by recruiting clinicians. METHODS Eighty-three prescreened probands were recruited to the 100,000 Genomes Project suspected to have congenital malformations caused by ciliopathies in the following disease categories: Bardet-Biedl syndrome (n=45), Joubert syndrome (n=14) and 'Rare Multisystem Ciliopathy Disorders' (n=24). We implemented a bespoke variant filtering and analysis strategy to improve molecular diagnostic rates for these participants. RESULTS We determined a research molecular diagnosis for n=43/83 (51.8%) probands. This is 19.3% higher than previously reported by GEL (n=27/83 (32.5%)). A high proportion of diagnoses are due to variants in non-ciliopathy disease genes (n=19/43, 44.2%) which may reflect difficulties in clinical recognition of ciliopathies. n=11/83 probands (13.3%) had at least one causative variant outside the tiers 1 and 2 variant prioritisation categories (GEL's automated triaging procedure), which would not be reviewed in standard 100,000 Genomes Project diagnostic strategies. These include four structural variants and three predicted to cause non-canonical splicing defects. Two unrelated participants have biallelic likely pathogenic variants in LRRC45, a putative novel ciliopathy disease gene. CONCLUSION These data illustrate the power of linking large-scale genome sequence to phenotype information. They demonstrate the value of research collaborations in order to maximise interpretation of genomic data.
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Affiliation(s)
- Sunayna Best
- Division of Molecular Medicine, University of Leeds Leeds Institute of Medical Research at St James's, Leeds, West Yorkshire, UK
- Department of Clinical Genetics, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Jenny Lord
- Department of Human Development and Health, University of Southampton Faculty of Medicine, Southampton, UK
- University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | | | - Christopher M Watson
- Department of Yorkshire Regional Genetics Service, Leeds Teaching Hospitals NHS Trust, Leeds, West Yorkshire, UK
- School of Medicine, University of Leeds, Leeds, UK
| | - James A Poulter
- Division of Molecular Medicine, University of Leeds Leeds Institute of Medical Research at St James's, Leeds, West Yorkshire, UK
| | - Roel P J Bevers
- Genomics England, Queen Mary University of London, London, UK
| | - Alex Stuckey
- Genomics England, Queen Mary University of London, London, UK
| | - Katarzyna Szymanska
- Division of Molecular Medicine, University of Leeds Leeds Institute of Medical Research at St James's, Leeds, West Yorkshire, UK
| | - Jamie M Ellingford
- Division of Evolution and Genomic Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
- Manchester Centre for Genomic Medicine, Manchester, UK
| | - Jenny Carmichael
- East Anglian Medical Genetics Service, Addenbrooke's Hospital, Cambridge, UK
| | - Helen Brittain
- Genomics England, Queen Mary University of London, London, UK
| | - Carmel Toomes
- Division of Molecular Medicine, University of Leeds Leeds Institute of Medical Research at St James's, Leeds, West Yorkshire, UK
| | - Chris Inglehearn
- Division of Molecular Medicine, University of Leeds Leeds Institute of Medical Research at St James's, Leeds, West Yorkshire, UK
| | - Colin A Johnson
- Division of Molecular Medicine, University of Leeds Leeds Institute of Medical Research at St James's, Leeds, West Yorkshire, UK
| | - Gabrielle Wheway
- Department of Human Development and Health, University of Southampton Faculty of Medicine, Southampton, UK
- Southampton University Hospitals NHS Trust, Southampton, UK
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Szymanska K, Boldt K, Logan CV, Adams M, Robinson PA, Ueffing M, Zeqiraj E, Wheway G, Johnson CA. Regulation of canonical Wnt signalling by the ciliopathy protein MKS1 and the E2 ubiquitin-conjugating enzyme UBE2E1. eLife 2022; 11:57593. [PMID: 35170427 PMCID: PMC8880992 DOI: 10.7554/elife.57593] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 04/05/2020] [Accepted: 02/10/2022] [Indexed: 11/24/2022] Open
Abstract
Primary ciliary defects cause a group of developmental conditions known as ciliopathies. Here, we provide mechanistic insight into ciliary ubiquitin processing in cells and for mouse model lacking the ciliary protein Mks1. In vivo loss of Mks1 sensitises cells to proteasomal disruption, leading to abnormal accumulation of ubiquitinated proteins. We identified UBE2E1, an E2 ubiquitin-conjugating enzyme that polyubiquitinates β-catenin, and RNF34, an E3 ligase, as novel interactants of MKS1. UBE2E1 and MKS1 colocalised, and loss of UBE2E1 recapitulates the ciliary and Wnt signalling phenotypes observed during loss of MKS1. Levels of UBE2E1 and MKS1 are co-dependent and UBE2E1 mediates both regulatory and degradative ubiquitination of MKS1. We demonstrate that processing of phosphorylated β-catenin occurs at the ciliary base through the functional interaction between UBE2E1 and MKS1. These observations suggest that correct β-catenin levels are tightly regulated at the primary cilium by a ciliary-specific E2 (UBE2E1) and a regulatory substrate-adaptor (MKS1).
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Affiliation(s)
- Katarzyna Szymanska
- Leeds Institute of Medical Research, University of Leeds, Leeds, United Kingdom
| | - Karsten Boldt
- Institute of Ophthalmic Research, University of Tübingen, Tübingen, Germany
| | | | - Matthew Adams
- Leeds Institute of Medical Research, University of Leeds, Leeds, United Kingdom
| | | | - Marius Ueffing
- Institute for Ophthalmic Research, University of Tübingen, Tübingen, Germany
| | - Elton Zeqiraj
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, United Kingdom
| | - Gabrielle Wheway
- Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Colin A Johnson
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, United Kingdom
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Best S, Lord J, Roche M, Watson C, Poulter J, Szymanska K, Ellingford J, Carmichael J, Brittain H, Toomes C, Inglehearn C, Johnson C, Wheway G. Molecular diagnoses in the congenital malformations caused by ciliopathies cohort of the 100 000 genomes project. Acta Ophthalmol 2022. [DOI: 10.1111/j.1755-3768.2022.130] [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: 11/30/2022]
Affiliation(s)
- Sunayna Best
- Division of Molecular Medicine Leeds Institute of Medical Research at St. James University of Leeds
- Yorkshire Regional Genetics Service Leeds Teaching Hospitals NHS Trust Leeds
| | - Jenny Lord
- University Hospital Southampton NHS Foundation Trust
- Faculty of Medicine Human Development and Health University of Southampton Southampton
| | | | - Christopher Watson
- Division of Molecular Medicine Leeds Institute of Medical Research at St. James University of Leeds
- Yorkshire Regional Genetics Service Leeds Teaching Hospitals NHS Trust Leeds
| | - James Poulter
- Division of Molecular Medicine Leeds Institute of Medical Research at St. James University of Leeds
| | - Katarzyna Szymanska
- Division of Molecular Medicine Leeds Institute of Medical Research at St. James University of Leeds
| | - Jamie Ellingford
- Division of Evolution and Genomic Sciences Faculty of Biology, Medicine and Health University of Manchester
| | | | | | - Carmel Toomes
- Division of Molecular Medicine Leeds Institute of Medical Research at St. James University of Leeds
| | - Chris Inglehearn
- Division of Molecular Medicine Leeds Institute of Medical Research at St. James University of Leeds
| | - Colin Johnson
- Division of Molecular Medicine Leeds Institute of Medical Research at St. James University of Leeds
| | - Gabrielle Wheway
- University Hospital Southampton NHS Foundation Trust
- Faculty of Medicine Human Development and Health University of Southampton Southampton
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6
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Vash-Margita A, Szymanska K, Saluja S, Christison-Lagay E, Oktay KH. OVARIAN TISSUE HARVESTING AND CRYOPRESERVATION FROM A TODDLER WITH CLASSIC GALACTOSEMIA: A MULTIDISCIPLINARY APPROACH. Fertil Steril 2021. [DOI: 10.1016/j.fertnstert.2021.07.1171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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7
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Szymanska K, Vash-Margita A, Gunther K, Rodriguez-Buritica DF, Oktay KH. FERTILITY PRESERVATION MANAGEMENT AND OVARIAN TISSUE CRYOPRESERVATION IN AN INFANT GIRL WITH CLASSIC GALACTOSEMIA. Fertil Steril 2021. [DOI: 10.1016/j.fertnstert.2021.07.162] [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: 11/17/2022]
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8
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Bus A, Szymanska K, Pintelon I, Leroy JLMR, Leybaert L, Bols PEJ. Preservation of connexin 43 and transzonal projections in isolated bovine pre-antral follicles before and following vitrification. J Assist Reprod Genet 2020; 38:479-492. [PMID: 33159276 DOI: 10.1007/s10815-020-01993-2] [Citation(s) in RCA: 4] [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: 07/08/2020] [Accepted: 10/26/2020] [Indexed: 02/07/2023] Open
Abstract
PURPOSE Gap junctions and transzonal projections play a crucial role in intercellular communication between different follicular components and are necessary for follicle development. We aimed to demonstrate gap junction protein connexin 43 (Cx43) and transzonal projections (TZPs) in viable, category 1, isolated bovine pre-antral follicles (PAFs) during short-term culture and after vitrification and warming. METHODS This study involved four experimental groups: fresh control, 2-day culture, 4-day culture, and vitrified secondary PAFs. Isolated PAFs were vitrified using a simple and efficient cryopreservation method by means of mini cell strainers. RESULTS Cx43 and TZPs were detected in pre-antral follicles of all stages, as well as in every experimental group. The group fresh follicles showed a higher percentage of follicles that were positive for Cx43 (91.7%) than the follicles that were vitrified (77.4%). All follicles that were cultured for 2 days were Cx43-positive (100%). Follicles cultured for 4 days (65.8%) (P = 0.002) showed the lowest percentage of follicles that were Cx43-positive. The percentages of the presence or (partial) absence of the TZP network were shown to be very heterogeneous between follicles in different treatment groups. CONCLUSIONS These results suggest the maintenance of communication between the oocyte and the somatic companion cells after vitrification and warming. The varying percentages of the expression of the TZP network within groups suggests that it will be of interest to investigate whether this is truly due to variability in TZP integrity and follicle quality or due to methodological limitations.
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Affiliation(s)
- Anniek Bus
- Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Veterinary Physiology and Biochemistry, Gamete Research Centre, University of Antwerp, Universiteitsplein 1, U building, 2610, Wilrijk, Belgium.
| | - Katarzyna Szymanska
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, 310 Cedar Street, New Haven, CT, 06510, USA.,Faculty of Medicine and Health Sciences, Department of Basic and Applied Medical Sciences (BAMS), Physiology group, Ghent University, C. Heymanslaan 10, B-9000, Ghent, Belgium
| | - Isabel Pintelon
- Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Cell Biology and Histology, University of Antwerp, Universiteitsplein 1, T building, 2610, Wilrijk, Belgium
| | - Jo L M R Leroy
- Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Veterinary Physiology and Biochemistry, Gamete Research Centre, University of Antwerp, Universiteitsplein 1, U building, 2610, Wilrijk, Belgium
| | - Luc Leybaert
- Faculty of Medicine and Health Sciences, Department of Basic and Applied Medical Sciences (BAMS), Physiology group, Ghent University, C. Heymanslaan 10, B-9000, Ghent, Belgium
| | - Peter E J Bols
- Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Veterinary Physiology and Biochemistry, Gamete Research Centre, University of Antwerp, Universiteitsplein 1, U building, 2610, Wilrijk, Belgium
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9
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Vandenberghe LTM, Heindryckx B, Smits K, Szymanska K, Ortiz-Escribano N, Ferrer-Buitrago M, Pavani K, Peelman L, Deforce D, De Sutter P, Van Soom A, De Schauwer C. Platelet-activating factor acetylhydrolase 1B3 (PAFAH1B3) is required for the formation of the meiotic spindle during in vitro oocyte maturation. Reprod Fertil Dev 2019; 30:1739-1750. [PMID: 30008286 DOI: 10.1071/rd18019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Accepted: 06/06/2018] [Indexed: 11/23/2022] Open
Abstract
Platelet-activating factor (PAF) is a well-described autocrine growth factor involved in several reproductive processes and is tightly regulated by its hydrolysing enzyme, PAF acetylhydrolase 1B (PAFAH1B). This intracellular enzyme consists of three subunits: one regulatory, 1B1, and two catalytic, 1B2 and 1B3. PAFAH1B3 has remained uncharacterised until now. Here, we report that PAFAH1B3 is present during the different stages of the first meiotic division in bovine, murine and human oocytes. In these species, the PAFAH1B3 subunit was clearly present in the germinal vesicle, while at metaphase I and II, it localised primarily at the meiotic spindle structure. In cattle, manipulation of the microtubules of the spindle by nocodazole, taxol or cryopreservation revealed a close association with PAFAH1B3. On the other hand, disruption of the enzyme activity either by P11, a selective inhibitor of PAFAH1B3, or by PAFAH1B3 antibody microinjection, caused arrest at the MI stage with defective spindle morphology and consequent failure of first polar body extrusion. In conclusion, our results show that one of the catalytic subunits of PAFAH1B, namely PAFAH1B3, is present in bovine, murine and human oocytes and that it plays a functional role in spindle formation and meiotic progression during bovine oocyte maturation.
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Affiliation(s)
- L T M Vandenberghe
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - B Heindryckx
- Ghent-Fertility and Stem Cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, 9000 Ghent, Belgium
| | - K Smits
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - K Szymanska
- Physiology Group, Department of Basic Medical Sciences, Ghent University, De Pintelaan 185, 9000 Ghent, Belgium
| | - N Ortiz-Escribano
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - M Ferrer-Buitrago
- Ghent-Fertility and Stem Cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, 9000 Ghent, Belgium
| | - K Pavani
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - L Peelman
- Department of Nutrition, Genetics and Ethology, Faculty of Veterinary Medicine, Ghent University, Heidestraat 19, 9820 Merelbeke, Belgium
| | - D Deforce
- Laboratory of Pharmaceutical Biotechnology, Ghent University, Harelbekestraat 72, 9000 Ghent, Belgium
| | - P De Sutter
- Ghent-Fertility and Stem Cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, 9000 Ghent, Belgium
| | - A Van Soom
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - C De Schauwer
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
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10
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Hartill VL, van de Hoek G, Patel MP, Little R, Watson CM, Berry IR, Shoemark A, Abdelmottaleb D, Parkes E, Bacchelli C, Szymanska K, Knoers NV, Scambler PJ, Ueffing M, Boldt K, Yates R, Winyard PJ, Adler B, Moya E, Hattingh L, Shenoy A, Hogg C, Sheridan E, Roepman R, Norris D, Mitchison HM, Giles RH, Johnson CA. DNAAF1 links heart laterality with the AAA+ ATPase RUVBL1 and ciliary intraflagellar transport. Hum Mol Genet 2019; 27:529-545. [PMID: 29228333 PMCID: PMC5886296 DOI: 10.1093/hmg/ddx422] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [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: 11/20/2017] [Accepted: 12/01/2017] [Indexed: 01/11/2023] Open
Abstract
DNAAF1 (LRRC50) is a cytoplasmic protein required for dynein heavy chain assembly and cilia motility, and DNAAF1 mutations cause primary ciliary dyskinesia (PCD; MIM 613193). We describe four families with DNAAF1 mutations and complex congenital heart disease (CHD). In three families, all affected individuals have typical PCD phenotypes. However, an additional family demonstrates isolated CHD (heterotaxy) in two affected siblings, but no clinical evidence of PCD. We identified a homozygous DNAAF1 missense mutation, p.Leu191Phe, as causative for heterotaxy in this family. Genetic complementation in dnaaf1-null zebrafish embryos demonstrated the rescue of normal heart looping with wild-type human DNAAF1, but not the p.Leu191Phe variant, supporting the conserved pathogenicity of this DNAAF1 missense mutation. This observation points to a phenotypic continuum between CHD and PCD, providing new insights into the pathogenesis of isolated CHD. In further investigations of the function of DNAAF1 in dynein arm assembly, we identified interactions with members of a putative dynein arm assembly complex. These include the ciliary intraflagellar transport protein IFT88 and the AAA+ (ATPases Associated with various cellular Activities) family proteins RUVBL1 (Pontin) and RUVBL2 (Reptin). Co-localization studies support these findings, with the loss of RUVBL1 perturbing the co-localization of DNAAF1 with IFT88. We show that RUVBL1 orthologues have an asymmetric left-sided distribution at both the mouse embryonic node and the Kupffer's vesicle in zebrafish embryos, with the latter asymmetry dependent on DNAAF1. These results suggest that DNAAF1-RUVBL1 biochemical and genetic interactions have a novel functional role in symmetry breaking and cardiac development.
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Affiliation(s)
- Verity L Hartill
- Leeds Institute of Biomedical and Clinical Sciences, Faculty of Medicine & Health, University of Leeds, Leeds LS9 7TF, UK
| | - Glenn van de Hoek
- Department of Nephrology and Hypertension.,Department of Medical Genetics, University Medical Center, Utrecht, 3508 GA, The Netherlands
| | - Mitali P Patel
- Genetics and Genomic Medicine Programme, UCL Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK.,NIHR Great Ormond Street Hospital Biomedical Research Centre, London WC1N 1EH, UK
| | - Rosie Little
- Mammalian Genetics Unit, MRC Harwell Institute, Harwell Campus, Oxfordshire OX11 0RD, UK
| | - Christopher M Watson
- Leeds Genetics Laboratory, Leeds Teaching Hospitals NHS Trust, Leeds LS9 7TF, UK
| | - Ian R Berry
- Leeds Genetics Laboratory, Leeds Teaching Hospitals NHS Trust, Leeds LS9 7TF, UK
| | - Amelia Shoemark
- PCD Diagnostic Team and Department of Paediatric Respiratory Medicine, Royal Brompton and Harefield NHS Trust, London SW3 6NP, UK.,School of Medicine, University of Dundee, Dundee DD1 9SY, UK
| | - Dina Abdelmottaleb
- Leeds Institute of Biomedical and Clinical Sciences, Faculty of Medicine & Health, University of Leeds, Leeds LS9 7TF, UK.,Department of Zoology, Faculty of Science, Benha University, Benha, Egypt
| | - Emma Parkes
- Manchester Royal Infirmary, Manchester M13 9WL, UK
| | - Chiara Bacchelli
- Genetics and Genomic Medicine Programme, UCL Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK.,NIHR Great Ormond Street Hospital Biomedical Research Centre, London WC1N 1EH, UK
| | - Katarzyna Szymanska
- Leeds Institute of Biomedical and Clinical Sciences, Faculty of Medicine & Health, University of Leeds, Leeds LS9 7TF, UK
| | - Nine V Knoers
- Department of Medical Genetics, University Medical Center, Utrecht, 3508 GA, The Netherlands
| | - Peter J Scambler
- NIHR Great Ormond Street Hospital Biomedical Research Centre, London WC1N 1EH, UK.,Developmental Biology and Cancer Programme, UCL Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Marius Ueffing
- Department for Ophthalmology, Institute for Ophthalmic Research and Medical Bioanalytics Core, University of Tübingen, 72074 Tübingen, Germany
| | - Karsten Boldt
- Department for Ophthalmology, Institute for Ophthalmic Research and Medical Bioanalytics Core, University of Tübingen, 72074 Tübingen, Germany
| | - Robert Yates
- NIHR Great Ormond Street Hospital Biomedical Research Centre, London WC1N 1EH, UK.,Paediatric Cardiology Department, Great Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK
| | - Paul J Winyard
- Developmental Biology and Cancer Programme, UCL Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Beryl Adler
- Department of Paediatrics, Luton and Dunstable Hospital NHS Trust, Luton LU4 0DZ, UK
| | - Eduardo Moya
- Department of Paediatrics, Bradford Teaching Hospitals NHS Trust, Bradford BD9 6RJ, UK
| | - Louise Hattingh
- Department of Paediatrics, Bradford Teaching Hospitals NHS Trust, Bradford BD9 6RJ, UK
| | - Anil Shenoy
- Department of Paediatrics, Bradford Teaching Hospitals NHS Trust, Bradford BD9 6RJ, UK
| | - Claire Hogg
- PCD Diagnostic Team and Department of Paediatric Respiratory Medicine, Royal Brompton and Harefield NHS Trust, London SW3 6NP, UK
| | - Eamonn Sheridan
- Leeds Institute of Biomedical and Clinical Sciences, Faculty of Medicine & Health, University of Leeds, Leeds LS9 7TF, UK
| | - Ronald Roepman
- Department of Human Genetics, Radboud University Medical Center, 6500HB Nijmegen, The Netherlands
| | - Dominic Norris
- Mammalian Genetics Unit, MRC Harwell Institute, Harwell Campus, Oxfordshire OX11 0RD, UK
| | - Hannah M Mitchison
- Genetics and Genomic Medicine Programme, UCL Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK.,NIHR Great Ormond Street Hospital Biomedical Research Centre, London WC1N 1EH, UK
| | | | - Colin A Johnson
- Leeds Institute of Biomedical and Clinical Sciences, Faculty of Medicine & Health, University of Leeds, Leeds LS9 7TF, UK
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11
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Pavani KC, Hendrix A, Van Den Broeck W, Couck L, Szymanska K, Lin X, De Koster J, Van Soom A, Leemans B. Isolation and Characterization of Functionally Active Extracellular Vesicles from Culture Medium Conditioned by Bovine Embryos In Vitro. Int J Mol Sci 2018; 20:ijms20010038. [PMID: 30577682 PMCID: PMC6337605 DOI: 10.3390/ijms20010038] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 12/18/2018] [Accepted: 12/19/2018] [Indexed: 12/31/2022] Open
Abstract
Extracellular vesicles (EVs) play a possible role in cell–cell communication and are found in various body fluids and cell conditioned culture media. The aim of this study was to isolate and characterize EVs in culture medium conditioned by bovine embryos in group and to verify if these EVs are functionally active. Initially, ultracentrifuged bovine serum albumin (BSA) containing medium was selected as suitable EV-free embryo culture medium. Next, EVs were isolated from embryo conditioned culture medium by OptiPrepTM density gradient ultracentrifugation. Isolated EVs were characterized by nanoparticle tracking analysis, western blotting, transmission, and immunoelectron microscopy. Bovine embryo-derived EVs were sizing between 25–230 nm with an average concentration of 236.5 ± 1.27 × 108 particles/mL. Moreover, PKH67 EV pre-labeling showed that embryo-secreted EVs were uptaken by zona-intact bovine embryos. Since BSA did not appear to be a contaminating EV source in culture medium, EV functionality was tested in BSA containing medium. Individual embryo culture in BSA medium enriched with EVs derived from conditioned embryo culture medium showed significantly higher blastocyst rates at day 7 and 8 together with a significantly lower apoptotic cell ratio. In conclusion, our study shows that EVs play an important role in inter embryo communication during bovine embryo culture in group.
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Affiliation(s)
- Krishna Chaitanya Pavani
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium.
| | - An Hendrix
- Laboratory of Experimental Cancer Research, Department of Radiation Oncology and Experimental Cancer Research, Ghent University, C. Heymanslaan 10, B-9000 Ghent, Belgium.
- Cancer Research Institute Ghent (CRIG), C. Heymanslaan 10, B-9000 Ghent, Belgium.
| | - Wim Van Den Broeck
- Department of Morphology-Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium.
| | - Liesbeth Couck
- Department of Morphology-Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium.
| | - Katarzyna Szymanska
- Department of Basic Medical Sciences-Physiology group, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, B-9000 Ghent, Belgium.
| | - Xiaoyuan Lin
- Department of Nutrition, Genetics, and Ethology, Faculty of Veterinary Medicine, Ghent University, B-9820 Merelbeke, Belgium.
| | - Jenne De Koster
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium.
| | - Ann Van Soom
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium.
| | - Bart Leemans
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium.
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12
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Vandenberghe LTM, Heindryckx B, Smits K, Popovic M, Szymanska K, Bonte D, Peelman L, Deforce D, De Sutter P, Van Soom A, De Schauwer C. Intracellular localisation of platelet-activating factor during mammalian embryo development in vitro: a comparison of cattle, mouse and human. Reprod Fertil Dev 2018; 31:658-670. [PMID: 30458920 DOI: 10.1071/rd18146] [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] [Received: 04/18/2018] [Accepted: 10/05/2018] [Indexed: 11/23/2022] Open
Abstract
Platelet-activating factor (PAF) is a well-known marker for embryo quality and viability. For the first time, we describe an intracellular localisation of PAF in oocytes and embryos of cattle, mice and humans. We showed that PAF is represented in the nucleus, a signal that was lost upon nuclear envelope breakdown. This process was confirmed by treating the embryos with nocodazole, a spindle-disrupting agent that, as such, arrests the embryo in mitosis, and by microinjecting a PAF-specific antibody in bovine MII oocytes. The latter resulted in the absence of nuclear PAF in the pronuclei of the zygote and reduced further developmental potential. Previous research indicates that PAF is released and taken up from the culture medium by preimplantation embryos invitro, in which bovine serum albumin (BSA) serves as a crucial carrier molecule. In the present study we demonstrated that nuclear PAF does not originate from an extracellular source because embryos cultured in polyvinylpyrrolidone or BSA showed similar levels of PAF in their nuclei. Instead, our experiments indicate that cytosolic phospholipase A2 (cPLA2) is likely to be involved in the intracellular production of PAF, because treatment with arachidonyl trifluoromethyl ketone (AACOCF3), a specific cPLA2 inhibitor, clearly lowered PAF levels in the nuclei of bovine embryos.
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Affiliation(s)
- L T M Vandenberghe
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - B Heindryckx
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, De Pintelaan 185, 9000 Ghent, Belgium
| | - K Smits
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - M Popovic
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, De Pintelaan 185, 9000 Ghent, Belgium
| | - K Szymanska
- Physiology Group, Department of Basic Medical Sciences, Ghent University, De Pintelaan 185, 9000 Ghent, Belgium
| | - D Bonte
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, De Pintelaan 185, 9000 Ghent, Belgium
| | - L Peelman
- Department of Nutrition, Genetics and Ethology, Faculty of Veterinary Medicine, Ghent University, Heidestraat 19, 9820 Merelbeke, Belgium
| | - D Deforce
- Laboratory of Pharmaceutical Biotechnology, Ghent University, Harelbekestraat 72, 9000 Ghent, Belgium
| | - P De Sutter
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, De Pintelaan 185, 9000 Ghent, Belgium
| | - A Van Soom
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - C De Schauwer
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
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13
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Pietras R, Szymanska K, Kondej M, Gladysz A, Kowalczuk D. Development and validation of the HPLC method for varenicline determination in pharmaceutical preparation. Current Issues in Pharmacy and Medical Sciences 2017. [DOI: 10.1515/cipms-2017-0026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractA simple and accurate reverse phase HPLC method has been developed and validated for quantification of varenicline in bulk drug and pharmaceutical dosage forms. Herein, an isocratic LC analysis was carried out on a Chromolith Performance RP18e column with methanol-buffer solution pH 3.5 (a buffer solution containing sodium benzoate (0.5 mmol/l) adjusted to pH 3.5 with trifluoroacetic acid (20 mmol/l) (55:45, V/V)) at a flow rate of 1.2 ml/min. The detection wavelength was set at 320 nm. The calibration curve was linear (r = 0.9999) in the studied range of concentration (0.2-10 μg/ml). The selectivity and sensitivity of the elaborated method were satisfactory, and the limits of detection and quantification was less than 20% of the specification level. Moreover, the inter- and intra-day precisions was found to be less than 3% (RSD), while the recovery values expressing inter- and intra-day accuracy was varied from 99.73 to 101.23. The varenicline solution was stable over a period of 3 days on storage under refrigeration. The utility of the developed method was examined by analysing the tablets containing VAR. As a result, the method was found to be selective, sensitive, precise and accurate.
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Affiliation(s)
- Rafal Pietras
- Chair and Department of Medicinal Chemistry, Medical University of Lublin, Jaczewskiego 4, 20-090 Lublin , Poland
| | - Katarzyna Szymanska
- Chair and Department of Medicinal Chemistry, Medical University of Lublin, Jaczewskiego 4, 20-090 Lublin , Poland
| | - Magda Kondej
- Chair and Department of Medicinal Chemistry, Medical University of Lublin, Jaczewskiego 4, 20-090 Lublin , Poland
| | - Agata Gladysz
- Chair and Department of Medicinal Chemistry, Medical University of Lublin, Jaczewskiego 4, 20-090 Lublin , Poland
| | - Dorota Kowalczuk
- Chair and Department of Medicinal Chemistry, Medical University of Lublin, Jaczewskiego 4, 20-090 Lublin , Poland
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14
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Zhu G, Bian Y, Hursthouse AS, Wan P, Szymanska K, Ma J, Wang X, Zhao Z. Application of 3-D Fluorescence: Characterization of Natural Organic Matter in Natural Water and Water Purification Systems. J Fluoresc 2017; 27:2069-2094. [DOI: 10.1007/s10895-017-2146-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 07/18/2017] [Indexed: 11/28/2022]
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15
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Hartill V, Szymanska K, Sharif SM, Wheway G, Johnson CA. Meckel-Gruber Syndrome: An Update on Diagnosis, Clinical Management, and Research Advances. Front Pediatr 2017; 5:244. [PMID: 29209597 PMCID: PMC5701918 DOI: 10.3389/fped.2017.00244] [Citation(s) in RCA: 84] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 11/02/2017] [Indexed: 11/13/2022] Open
Abstract
Meckel-Gruber syndrome (MKS) is a lethal autosomal recessive congenital anomaly syndrome caused by mutations in genes encoding proteins that are structural or functional components of the primary cilium. Conditions that are caused by mutations in ciliary genes are collectively termed the ciliopathies, and MKS represents the most severe condition in this group of disorders. The primary cilium is a microtubule-based organelle, projecting from the apical surface of vertebrate cells. It acts as an "antenna" that receives and transduces chemosensory and mechanosensory signals, but also regulates diverse signaling pathways, such as Wnt and Shh, that have important roles during embryonic development. Most MKS proteins localize to a distinct ciliary compartment called the transition zone (TZ) that regulates the trafficking of cargo proteins or lipids. In this review, we provide an up-to-date summary of MKS clinical features, molecular genetics, and clinical diagnosis. MKS has a highly variable phenotype, extreme genetic heterogeneity, and displays allelism with other related ciliopathies such as Joubert syndrome, presenting significant challenges to diagnosis. Recent advances in genetic technology, with the widespread use of multi-gene panels for molecular testing, have significantly improved diagnosis, genetic counseling, and the clinical management of MKS families. These include the description of some limited genotype-phenotype correlations. We discuss recent insights into the molecular basis of disease in MKS, since the functions of some of the relevant ciliary proteins have now been determined. A common molecular etiology appears to be disruption of ciliary TZ structure and function, affecting essential developmental signaling and the regulation of secondary messengers.
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Affiliation(s)
- Verity Hartill
- Department of Clinical Genetics, Yorkshire Regional Genetics Service, Leeds Teaching Hospitals NHS Trust, Leeds, United Kingdom.,Leeds Institute of Biomedical and Clinical Sciences, University of Leeds, Leeds, United Kingdom
| | - Katarzyna Szymanska
- Leeds Institute of Biomedical and Clinical Sciences, University of Leeds, Leeds, United Kingdom
| | - Saghira Malik Sharif
- Department of Clinical Genetics, Yorkshire Regional Genetics Service, Leeds Teaching Hospitals NHS Trust, Leeds, United Kingdom
| | - Gabrielle Wheway
- Faculty of Health and Applied Sciences, Department of Applied Sciences, UWE Bristol, Bristol, United Kingdom
| | - Colin A Johnson
- Leeds Institute of Biomedical and Clinical Sciences, University of Leeds, Leeds, United Kingdom
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16
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Shaheen R, Szymanska K, Basu B, Patel N, Ewida N, Faqeih E, Al Hashem A, Derar N, Alsharif H, Aldahmesh MA, Alazami AM, Hashem M, Ibrahim N, Abdulwahab FM, Sonbul R, Alkuraya H, Alnemer M, Al Tala S, Al-Husain M, Morsy H, Seidahmed MZ, Meriki N, Al-Owain M, AlShahwan S, Tabarki B, Salih MA, Faquih T, El-Kalioby M, Ueffing M, Boldt K, Logan CV, Parry DA, Al Tassan N, Monies D, Megarbane A, Abouelhoda M, Halees A, Johnson CA, Alkuraya FS. Characterizing the morbid genome of ciliopathies. Genome Biol 2016; 17:242. [PMID: 27894351 PMCID: PMC5126998 DOI: 10.1186/s13059-016-1099-5] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [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: 08/29/2016] [Accepted: 11/07/2016] [Indexed: 11/25/2022] Open
Abstract
Background Ciliopathies are clinically diverse disorders of the primary cilium. Remarkable progress has been made in understanding the molecular basis of these genetically heterogeneous conditions; however, our knowledge of their morbid genome, pleiotropy, and variable expressivity remains incomplete. Results We applied genomic approaches on a large patient cohort of 371 affected individuals from 265 families, with phenotypes that span the entire ciliopathy spectrum. Likely causal mutations in previously described ciliopathy genes were identified in 85% (225/265) of the families, adding 32 novel alleles. Consistent with a fully penetrant model for these genes, we found no significant difference in their “mutation load” beyond the causal variants between our ciliopathy cohort and a control non-ciliopathy cohort. Genomic analysis of our cohort further identified mutations in a novel morbid gene TXNDC15, encoding a thiol isomerase, based on independent loss of function mutations in individuals with a consistent ciliopathy phenotype (Meckel-Gruber syndrome) and a functional effect of its deficiency on ciliary signaling. Our study also highlighted seven novel candidate genes (TRAPPC3, EXOC3L2, FAM98C, C17orf61, LRRCC1, NEK4, and CELSR2) some of which have established links to ciliogenesis. Finally, we show that the morbid genome of ciliopathies encompasses many founder mutations, the combined carrier frequency of which accounts for a high disease burden in the study population. Conclusions Our study increases our understanding of the morbid genome of ciliopathies. We also provide the strongest evidence, to date, in support of the classical Mendelian inheritance of Bardet-Biedl syndrome and other ciliopathies. Electronic supplementary material The online version of this article (doi:10.1186/s13059-016-1099-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ranad Shaheen
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Katarzyna Szymanska
- Leeds Institute of Biomedical & Clinical Sciences, University of Leeds, Leeds, LS9 7TF, UK
| | - Basudha Basu
- Leeds Institute of Biomedical & Clinical Sciences, University of Leeds, Leeds, LS9 7TF, UK
| | - Nisha Patel
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Nour Ewida
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Eissa Faqeih
- Department of Pediatric Subspecialties, Children's Hospital, King Fahad Medical City, Riyadh, Saudi Arabia
| | - Amal Al Hashem
- Department of Pediatrics, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
| | - Nada Derar
- Department of Pediatrics, Division of Medical Genetics, Stanford University, Stanford, CA, USA
| | - Hadeel Alsharif
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Mohammed A Aldahmesh
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Anas M Alazami
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Mais Hashem
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Niema Ibrahim
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Firdous M Abdulwahab
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Rawda Sonbul
- Department of Pediatrics, Qatif Central Hospital, Qatif, Saudi Arabia
| | - Hisham Alkuraya
- Department of Ophthalmology, Specialized Medical Center Hospital, Riyadh, Saudi Arabia
| | - Maha Alnemer
- Department of Obstetrics and Gynecology, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Saeed Al Tala
- Department of Pediatric, Genetic Unit, Armed Forces Hospital Southern Region, Khamis Mushayt, Saudi Arabia
| | - Muneera Al-Husain
- Department of Pediatrics, King Khalid University Hospital and College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Heba Morsy
- Human Genetics Department, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | | | - Neama Meriki
- Department of Obstetrics and Gynecology, King Khalid University Hospital and College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Mohammed Al-Owain
- Department of Medical Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia.,Department of Anatomy and Cell Biology, College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
| | - Saad AlShahwan
- Department of Pediatrics, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
| | - Brahim Tabarki
- Department of Pediatrics, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
| | - Mustafa A Salih
- Department of Pediatrics, King Khalid University Hospital and College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | | | - Tariq Faquih
- Saudi Human Genome Project, King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
| | - Mohamed El-Kalioby
- Saudi Human Genome Project, King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
| | - Marius Ueffing
- Division of Experimental Ophthalmology and Medical Bioanalytics, Center for Ophthalmology, Eberhard-Karls University Tübingen, 72076, Tübingen, Germany
| | - Karsten Boldt
- Division of Experimental Ophthalmology and Medical Bioanalytics, Center for Ophthalmology, Eberhard-Karls University Tübingen, 72076, Tübingen, Germany
| | - Clare V Logan
- Leeds Institute of Biomedical & Clinical Sciences, University of Leeds, Leeds, LS9 7TF, UK
| | - David A Parry
- Leeds Institute of Biomedical & Clinical Sciences, University of Leeds, Leeds, LS9 7TF, UK
| | - Nada Al Tassan
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia.,Saudi Human Genome Project, King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
| | - Dorota Monies
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia.,Saudi Human Genome Project, King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
| | | | - Mohamed Abouelhoda
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia.,Saudi Human Genome Project, King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
| | - Anason Halees
- Health Information Technology Affairs, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Colin A Johnson
- Leeds Institute of Biomedical & Clinical Sciences, University of Leeds, Leeds, LS9 7TF, UK
| | - Fowzan S Alkuraya
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia. .,Saudi Human Genome Project, King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia. .,Department of Anatomy and Cell Biology, College of Medicine, Alfaisal University, Riyadh, Saudi Arabia.
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17
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Hartill V, Logan C, Parry DA, Szymanska K, Ashcroft K, English K, Prescott K, Dobbie A, Barwick S, Bennett C, Goodship J, Sheridan E, Johnson C. Investigation into the Importance of genes encoding ciliary proteins in congenital heart disease using whole exome sequencing. Cilia 2015. [PMCID: PMC4518900 DOI: 10.1186/2046-2530-4-s1-p9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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18
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Slaats GG, Wheway G, Foletto V, Szymanska K, van Balkom BWM, Logister I, Den Ouden K, Keijzer-Veen MG, Lilien MR, Knoers NV, Johnson CA, Giles RH. Screen-based identification and validation of four new ion channels as regulators of renal ciliogenesis. J Cell Sci 2015; 128:4550-9. [PMID: 26546361 DOI: 10.1242/jcs.176065] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [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: 06/19/2015] [Accepted: 11/04/2015] [Indexed: 01/04/2023] Open
Abstract
To investigate the contribution of ion channels to ciliogenesis, we carried out a small interfering RNA (siRNA)-based reverse genetics screen of all ion channels in the mouse genome in murine inner medullary collecting duct kidney cells. This screen revealed four candidate ion channel genes: Kcnq1, Kcnj10, Kcnf1 and Clcn4. We show that these four ion channels localize to renal tubules, specifically to the base of primary cilia. We report that human KCNQ1 Long QT syndrome disease alleles regulate renal ciliogenesis; KCNQ1-p.R518X, -p.A178T and -p.K362R could not rescue ciliogenesis after Kcnq1-siRNA-mediated depletion in contrast to wild-type KCNQ1 and benign KCNQ1-p.R518Q, suggesting that the ion channel function of KCNQ1 regulates ciliogenesis. In contrast, we demonstrate that the ion channel function of KCNJ10 is independent of its effect on ciliogenesis. Our data suggest that these four ion channels regulate renal ciliogenesis through the periciliary diffusion barrier or the ciliary pocket, with potential implication as genetic contributors to ciliopathy pathophysiology. The new functional roles of a subset of ion channels provide new insights into the disease pathogenesis of channelopathies, which might suggest future therapeutic approaches.
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Affiliation(s)
- Gisela G Slaats
- Department of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht 3584 CX, The Netherlands
| | - Gabrielle Wheway
- Section of Ophthalmology and Neuroscience, Leeds Institutes of Molecular Medicine, University of Leeds, Leeds LS9 7TF, UK
| | - Veronica Foletto
- Department of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht 3584 CX, The Netherlands
| | - Katarzyna Szymanska
- Section of Ophthalmology and Neuroscience, Leeds Institutes of Molecular Medicine, University of Leeds, Leeds LS9 7TF, UK
| | - Bas W M van Balkom
- Department of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht 3584 CX, The Netherlands
| | - Ive Logister
- Department of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht 3584 CX, The Netherlands
| | - Krista Den Ouden
- Department of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht 3584 CX, The Netherlands
| | - Mandy G Keijzer-Veen
- Department of Pediatric Nephrology, University Medical Center Utrecht, Utrecht 3584 CX, The Netherlands
| | - Marc R Lilien
- Department of Pediatric Nephrology, University Medical Center Utrecht, Utrecht 3584 CX, The Netherlands
| | - Nine V Knoers
- Department of Medical Genetics, University Medical Center Utrecht, Utrecht 3584 CX, The Netherlands
| | - Colin A Johnson
- Section of Ophthalmology and Neuroscience, Leeds Institutes of Molecular Medicine, University of Leeds, Leeds LS9 7TF, UK
| | - Rachel H Giles
- Department of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht 3584 CX, The Netherlands
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19
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Abstract
Joubert (JBTS) and Meckel-Gruber (MKS) syndromes are recessive neurodevelopmental conditions caused by mutations in proteins that are structural or functional components of the primary cilium. In this review we provide an overview of their clinical diagnosis, management and molecular genetics. Both have variable phenotypes, extreme genetic heterogeneity, and display allelism both with each other and other ciliopathies. Recent advances in genetic technology have significantly improved diagnosis and clinical management of ciliopathy patients, with the delineation of some general genotype-phenotype correlations. We highlight those that are most relevant for clinical practice, including the correlation between TMEM67 mutations and the JBTS variant phenotype of COACH syndrome. The subcellular localization of the known MKS and JBTS proteins is now well-described, and we discuss some of the contemporary ideas about ciliopathy disease pathogenesis. Most JBTS and MKS proteins localize to a discrete ciliary compartment called the transition zone (TZ), and act as structural components of the so-called "ciliary gate" to regulate the ciliary trafficking of cargo proteins or lipids. Cargo proteins include enzymes and transmembrane proteins that mediate intracellular signaling. The disruption of TZ function may contribute to the ciliopathy phenotype by altering the composition of the ciliary membrane or axoneme, with impacts on essential developmental signaling including the Wnt and Shh pathways as well as the regulation of secondary messengers such as inositol-1,4,5-trisphosphate (InsP3) and cAMP. However, challenges remain in the interpretation of the pathogenic potential of genetic variants of unknown significance, and in the elucidation of the molecular mechanisms of phenotypic variability in JBTS and MKS. The further genetic and functional characterization of these conditions is essential to prioritize patients for new targeted therapies.
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Affiliation(s)
| | - Verity L Hartill
- Department of Ophthalmology and Neuroscience, University of Leeds, UK
| | - Colin A Johnson
- Department of Ophthalmology and Neuroscience, University of Leeds, UK
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Szymanska K, Wheway G, Doherty D, Schmidts M, Mans D, Nguyen TMT, Boldt K, Tödt G, Abdelhamed Z, Wunderlich K, Natarajan S, Parry DA, Logan CV, Herridge W, Sorusch N, Wolfrum U, Ueffing M, Roepman R, Mitchison H, Johnson C. A high-throughput genome-wide siRNA screen for ciliogenesis identifies new ciliary functional components and ciliopathy genes. Cilia 2015. [PMCID: PMC4519065 DOI: 10.1186/2046-2530-4-s1-o12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
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Waters AM, Asfahani R, Carroll P, Bicknell L, Lescai F, Bright A, Chanudet E, Brooks A, Christou-Savina S, Osman G, Walsh P, Bacchelli C, Chapgier A, Vernay B, Bader DM, Deshpande C, O' Sullivan M, Ocaka L, Stanescu H, Stewart HS, Hildebrandt F, Otto E, Johnson CA, Szymanska K, Katsanis N, Davis E, Kleta R, Hubank M, Doxsey S, Jackson A, Stupka E, Winey M, Beales PL. The kinetochore protein, CENPF, is mutated in human ciliopathy and microcephaly phenotypes. J Med Genet 2015; 52:147-56. [PMID: 25564561 PMCID: PMC4345935 DOI: 10.1136/jmedgenet-2014-102691] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [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] [Indexed: 12/02/2022]
Abstract
Background Mutations in microtubule-regulating genes are associated with disorders of neuronal migration and microcephaly. Regulation of centriole length has been shown to underlie the pathogenesis of certain ciliopathy phenotypes. Using a next-generation sequencing approach, we identified mutations in a novel centriolar disease gene in a kindred with an embryonic lethal ciliopathy phenotype and in a patient with primary microcephaly. Methods and results Whole exome sequencing data from a non-consanguineous Caucasian kindred exhibiting mid-gestation lethality and ciliopathic malformations revealed two novel non-synonymous variants in CENPF, a microtubule-regulating gene. All four affected fetuses showed segregation for two mutated alleles [IVS5-2A>C, predicted to abolish the consensus splice-acceptor site from exon 6; c.1744G>T, p.E582X]. In a second unrelated patient exhibiting microcephaly, we identified two CENPF mutations [c.1744G>T, p.E582X; c.8692 C>T, p.R2898X] by whole exome sequencing. We found that CENP-F colocalised with Ninein at the subdistal appendages of the mother centriole in mouse inner medullary collecting duct cells. Intraflagellar transport protein-88 (IFT-88) colocalised with CENP-F along the ciliary axonemes of renal epithelial cells in age-matched control human fetuses but did not in truncated cilia of mutant CENPF kidneys. Pairwise co-immunoprecipitation assays of mitotic and serum-starved HEKT293 cells confirmed that IFT88 precipitates with endogenous CENP-F. Conclusions Our data identify CENPF as a new centriolar disease gene implicated in severe human ciliopathy and microcephaly related phenotypes. CENP-F has a novel putative function in ciliogenesis and cortical neurogenesis.
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Affiliation(s)
- Aoife M Waters
- Institute of Child Health, University College London, London, UK Department of Nephrology, Great Ormond Street Hospital NHS Foundation Trust, London, UK
| | - Rowan Asfahani
- Institute of Child Health, University College London, London, UK
| | - Paula Carroll
- Institute of Genetics & Molecular Medicine, Edinburgh, UK
| | | | - Francesco Lescai
- Institute of Child Health, University College London, London, UK
| | | | - Estelle Chanudet
- Institute of Child Health, University College London, London, UK
| | - Anthony Brooks
- Institute of Child Health, University College London, London, UK
| | | | - Guled Osman
- Institute of Child Health, University College London, London, UK
| | - Patrick Walsh
- Institute of Child Health, University College London, London, UK
| | - Chiara Bacchelli
- Institute of Child Health, University College London, London, UK
| | - Ariane Chapgier
- Institute of Child Health, University College London, London, UK
| | - Bertrand Vernay
- Institute of Child Health, University College London, London, UK
| | - David M Bader
- Department of Cell and Developmental Biology, Vanderbilt University, USA
| | - Charu Deshpande
- Department of Clinical Genetics, Evelina Children's Hospital, London, UK
| | - Mary O' Sullivan
- Institute of Child Health, University College London, London, UK
| | - Louise Ocaka
- Institute of Child Health, University College London, London, UK
| | - Horia Stanescu
- Centre for Nephrology, Royal Free Hospital, University College London, London, UK
| | - Helen S Stewart
- Department of Clinical Genetics, Oxford Radcliffe Hospitals NHS Trust, Churchill Hospital, Oxford, UK
| | - Friedhelm Hildebrandt
- Department of Medicine, Boston Children's Hospital and Harvard Medical School, Boston, USA
| | - Edgar Otto
- Department of Pediatrics, University of Michigan, Ann Arbor, Michigan, USA
| | - Colin A Johnson
- Department of Pediatrics, Leeds Institute of Biomedical and Clinical Sciences, Leeds, UK
| | - Katarzyna Szymanska
- Department of Pediatrics, Leeds Institute of Biomedical and Clinical Sciences, Leeds, UK
| | - Nicholas Katsanis
- Center for Human Disease Modeling, Department of Cell Biology, Duke University Medical Center
| | - Erica Davis
- Center for Human Disease Modeling, Department of Cell Biology, Duke University Medical Center
| | - Robert Kleta
- Centre for Nephrology, Royal Free Hospital, University College London, London, UK
| | - Mike Hubank
- Institute of Child Health, University College London, London, UK
| | | | - Andrew Jackson
- Institute of Genetics & Molecular Medicine, Edinburgh, UK MRC Human Genetics, University of Edinburgh, Edinburgh, UK
| | - Elia Stupka
- Institute of Child Health, University College London, London, UK
| | - Mark Winey
- Molecular, Ceullular, and Developmental Biology, University of Colorado at Boulder, Boulder, CO 80309, USA
| | - Philip L Beales
- Institute of Child Health, University College London, London, UK
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Orii M, Tanimoto T, Yokoyama M, Ota S, Kubo T, Hirata K, Tanaka A, Imanishi T, Akasaka T, Michelsen M, Pena A, Mygind N, Hoest N, Prescott E, Abd El Dayem S, Battah A, Abd El Azzez F, Ahmed A, Fattoh A, Ismail R, Andjelkovic K, Kalimanovska Ostric D, Nedeljkovic I, Andjelkovic I, Rashid H, Abuel Enien H, Ibraheem M, Vago H, Toth A, Csecs I, Czimbalmos C, Suhai FI, Kecskes K, Becker D, Simor T, Merkely B, D'ascenzi F, Pelliccia A, Natali B, Cameli M, Lisi M, Focardi M, Corrado D, Bonifazi M, Mondillo S, Zaha V, Kim G, Su K, Zhang J, Mikush N, Ross J, Palmeri M, Young L, Tadic M, Ilic S, Celic V, Jaimes C, Gonzalez Mirelis J, Gallego M, Goirigolzarri J, Pellegrinet M, Poli S, Prati G, Vriz O, Di Bello V, Carerj S, Zito C, Mateescu A, Popescu B, Antonini-Canterin F, Chatzistamatiou E, Moustakas G, Memo G, Konstantinidis D, Mpampatzeva Vagena I, Manakos K, Traxanas K, Vergi N, Feretou A, Kallikazaros I, Hewing B, Theres L, Dreger H, Spethmann S, Stangl K, Baumann G, Knebel F, Uejima T, Itatani K, Nakatani S, Lancellotti P, Seo Y, Zamorano J, Ohte N, Takenaka K, Naar J, Mortensen L, Johnson J, Winter R, Shahgaldi K, Manouras A, Braunschweig F, Stahlberg M, Coisne D, Al Arnaout AM, Tchepkou C, Raud Raynier P, Diakov C, Degand B, Christiaens L, Barbier P, Mirea O, Cefalu C, Savioli G, Guglielmo M, Maltagliati A, O'neill L, Walsh K, Hogan J, Manzoor T, Ahern B, Owens P, Savioli G, Guglielmo M, Mirea O, Cefalu C, Barbier P, Marta L, Abecasis J, Reis C, Ribeiras R, Andrade M, Mendes M, D'andrea A, Stanziola A, Di Palma E, Martino M, Lanza M, Betancourt V, Maglione M, Calabro' R, Russo M, Bossone E, Vogt MO, Meierhofer C, Rutz T, Fratz S, Ewert P, Roehlig C, Kuehn A, Storsten P, Eriksen M, Remme E, Boe E, Smiseth O, Skulstad H, Ereminiene E, Ordiene R, Ivanauskas V, Vaskelyte J, Stoskute N, Kazakauskaite E, Benetis R, Marketou M, Parthenakis F, Kontaraki J, Zacharis E, Maragkoudakis S, Logakis J, Roufas K, Vougia D, Vardas P, Dado E, Dado E, Knuti G, Djamandi J, Shota E, Sharka I, Saka J, Halmai L, Nemes A, Kardos A, Neubauer S, Kurnicka K, Domienik-Karlowicz J, Lichodziejewska B, Goliszek S, Grudzka K, Krupa M, Dzikowska-Diduch O, Ciurzynski M, Pruszczyk P, Chung H, Kim J, Yoon Y, Min P, Lee B, Hong B, Rim S, Kwon H, Choi E, Soya O, Kuryata O, Kakihara R, Naruse C, Inayoshi A, El Sebaie M, Frer A, Abdelsamie M, Eldamanhory A, Ciampi Q, Cortigiani L, Simioniuc A, Manicardi C, Villari B, Picano E, Sicari R, Ferferieva V, Deluyker D, Lambrichts I, Rigo J, Bito V, Kuznetsov V, Yaroslavskaya E, Krinochkin D, Pushkarev G, Gorbatenko E, Trzcinski P, Michalski B, Lipiec P, Szymczyk E, Peczek L, Nawrot B, Chrzanowski L, Kasprzak J, Todaro M, Zito C, Khandheria B, Cusma-Piccione M, La Carrubba S, Antonini-Canterin F, Di Bello V, Oreto G, Di Bella G, Carerj S, Gunyeli E, Oliveira Da Silva C, Sahlen A, Manouras A, Winter R, Shahgaldi K, Spampinato R, Tasca M, Roche E Silva J, Strotdrees E, Schloma V, Dmitrieva Y, Dobrovie M, Borger M, Mohr F, Calin A, Rosca M, Beladan C, Mirescu Craciun A, Gurzun M, Mateescu A, Enache R, Ginghina C, Popescu B, Antova E, Georgievska Ismail L, Srbinovska E, Andova V, Peovska I, Davceva J, Otljanska M, Vavulkis M, Tsuruta H, Kohsaka S, Murata M, Yasuda R, Dan M, Yashima F, Inohara T, Maekawa Y, Hayashida K, Fukuda K, Migliore R, Adaniya M, Barranco M, Miramont G, Gonzalez S, Tamagusuku H, Abid L, Ben Kahla S, Charfeddine S, Abid D, Kammoun S, Amano M, Izumi C, Miyake M, Tamura T, Kondo H, Kaitani K, Nakagawa Y, Ghulam Ali S, Fusini L, Tamborini G, Muratori M, Gripari P, Bottari V, Celeste F, Cefalu' C, Alamanni F, Pepi M, Teixeira R, Monteiro R, Garcia J, Ribeiro M, Cardim N, Goncalves L, Miglioranza M, Muraru D, Cavalli G, Addetia K, Cucchini U, Mihaila S, Tadic M, Veronesi F, Lang R, Badano L, Galian Gay L, Gonzalez Alujas M, Teixido Tura G, Gutierrez Garcia L, Rodriguez-Palomares J, Evangelista Masip A, Conte L, Fabiani I, Giannini C, La Carruba S, De Carlo M, Barletta V, Petronio A, Di Bello V, Mahmoud H, Al-Ghamdi M, Ghabashi A, Salaun E, Zenses A, Evin M, Collart F, Pibarot P, Habib G, Rieu R, Fabregat Andres O, Estornell Erill J, Cubillos-Arango A, Bochard-Villanueva B, Chacon-Hernandez N, Higueras-Ortega L, Perez-Bosca L, Paya-Serrano R, Ridocci-Soriano F, Cortijo-Gimeno J, Mzoughi K, Zairi I, Jabeur M, Ben Moussa F, Mrabet K, Kamoun S, Fennira S, Ben Chaabene A, Kraiem S, Schnell F, Betancur J, Daudin M, Simon A, Lentz P, Tavard F, Hernandes A, Carre F, Garreau M, Donal E, Abduch M, Vieira M, Antunes M, Mathias W, Mady C, Arteaga E, Alencar A, Tesic M, Djordjevic-Dikic A, Beleslin B, Giga V, Trifunovic D, Petrovic O, Jovanovic I, Petrovic M, Stepanovic J, Vujisic-Tesic B, Choi E, Cha J, Chung H, Kim K, Yoon Y, Kim J, Lee B, Hong B, Rim S, Kwon H, Bergler-Klein J, Geier C, Maurer G, Gyongyosi M, Cortes Garcia M, Oliva M, Navas M, Orejas M, Rabago R, Martinez M, Briongos S, Romero A, Rey M, Farre J, Ruisanchez Villar C, Ruiz Guerrero L, Rubio Ruiz S, Lerena Saenz P, Gonzalez Vilchez F, Hernandez Hernandez J, Armesto Alonso S, Blanco Alonso R, Martin Duran R, Gonzalez-Gay M, Novo G, Marturana I, Bonomo V, Arvigo L, Evola V, Karfakis G, Lo Presti M, Verga S, Novo S, Petroni R, Acitelli A, Bencivenga S, Cicconetti M, Di Mauro M, Petroni A, Romano S, Penco M, Park S, Kim S, Kim M, Shim W, Tadic M, Majstorovic A, Ivanovic B, Celic V, Driessen MMP, Meijboom F, Mertens L, Dragulescu A, Friedberg M, De Stefano F, Santoro C, Buonauro A, Muscariello R, Lo Iudice F, Ierano P, Esposito R, Galderisi M, Sunbul M, Kivrak T, Durmus E, Yildizeli B, Mutlu B, Rodrigues A, Daminello E, Echenique L, Cordovil A, Oliveira W, Monaco C, Lira E, Fischer C, Vieira M, Morhy S, Mignot A, Jaussaud J, Chevalier L, Lafitte S, D'ascenzi F, Cameli M, Curci V, Alvino F, Lisi M, Focardi M, Corrado D, Bonifazi M, Mondillo S, Ikonomidis I, Pavlidis G, Lambadiari V, Kousathana F, Triantafyllidi H, Varoudi M, Dimitriadis G, Lekakis J, Cho JS, Cho E, Yoon H, Ihm S, Lee J, Molnar AA, Kovacs A, Apor A, Tarnoki A, Tarnoki D, Horvath T, Maurovich-Horvat P, Jermendy G, Kiss R, Merkely B, Petrovic-Nagorni S, Ciric-Zdravkovic S, Stanojevic D, Jankovic-Tomasevic R, Atanaskovic V, Mitic V, Todorovic L, Dakic S, Coppola C, Piscopo G, Galletta F, Maurea C, Esposito E, Barbieri A, Maurea N, Kaldararova M, Tittel P, Kantorova A, Vrsanska V, Kollarova E, Hraska V, Nosal M, Ondriska M, Masura J, Simkova I, Tadeu I, Azevedo O, Lourenco M, Luis F, Lourenco A, Planinc I, Bagadur G, Bijnens B, Ljubas J, Baricevic Z, Skoric B, Velagic V, Milicic D, Cikes M, Campanale CM, Di Maria S, Mega S, Nusca A, Marullo F, Di Sciascio G, El Tahlawi M, Abdallah M, Gouda M, Gad M, Elawady M, Igual Munoz B, Maceira Gonzalez Alicia A, Estornell Erill J, Donate Betolin L, Vazquez Sanchez Alejandro A, Valera Martinez F, Sepulveda- Sanchez P, Cervera Zamora A, Piquer Gil Marina M, Montero- Argudo A, Naka K, Evangelou D, Lakkas L, Kalaitzidis R, Bechlioulis A, Gkirdis I, Tzeltzes G, Nakas G, Pappas K, Michalis L, Mansencal N, Bagate F, Arslan M, Siam-Tsieu V, Deblaise J, El Mahmoud R, Dubourg O, Wierzbowska-Drabik K, Plewka M, Kasprzak J, Bandera F, Generati G, Pellegrino M, Alfonzetti E, Labate V, Villani S, Gaeta M, Guazzi M, Bandera F, Generati G, Pellegrino M, Labate V, Alfonzetti E, Guazzi M, Generati G, Bandera F, Pellegrino M, Labate V, Alfonzetti E, Guazzi M, Grycewicz T, Szymanska K, Grabowicz W, Lubinski A, Sotaquira M, Pepi M, Tamborini G, Caiani E, Bochard Villanueva B, Chacon-Hernandez N, Fabregat-Andres O, Garcia-Gonzalez P, Cubillos-Arango A, De La Espriella-Juan R, Albiach-Montanana C, Berenguer-Jofresa A, Perez-Bosca J, Paya-Serrano R, Cheng HL, Huang CH, Wang YC, Chou WH, Kuznetsov V, Melnikov N, Krinochkin D, Kolunin G, Enina T, Sierraalta W, Le Bihan D, Barretto R, Assef J, Gospos M, Buffon M, Ramos A, Garcia A, Pinto I, Souza A, Mueller H, Reverdin S, Ehret G, Conti L, Dos Santos S, Abdel Moneim SS, Nhola LF, Huang R, Kohli M, Longenbach S, Green M, Villarraga HR, Bordun KA, Jassal DS, Mulvagh SL, Evangelista A, Madeo A, Piras P, Giordano F, Giura G, Teresi L, Gabriele S, Re F, Puddu P, Torromeo C, Suwannaphong S, Vathesatogkit P, See O, Yamwong S, Katekao W, Sritara P, Iliuta L, Szulik M, Streb W, Wozniak A, Lenarczyk R, Sliwinska A, Kalarus Z, Kukulski T, Weng KP, Lin CC, Hein S, Lehmann L, Kossack M, Juergensen L, Katus H, Hassel D, Turrini F, Scarlini S, Giovanardi P, Messora R, Mannucci C, Bondi M, Olander R, Sundholm J, Ojala T, Andersson S, Sarkola T, Karolyi M, Kocsmar I, Raaijmakers R, Kitslaar P, Horvath T, Szilveszter B, Merkely B, Maurovich-Horvat P. Poster session 4: Friday 5 December 2014, 08:30-12:30 * Location: Poster area. Eur Heart J Cardiovasc Imaging 2014. [DOI: 10.1093/ehjci/jeu256] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Sharpe J, Logan C, Szabadkai G, Parry D, Torelli S, Childs AM, Kriek M, Phadke R, Johnson C, Roberts N, Bonthron D, Pysden K, Whyte T, Munteanu I, Foley A, Wheway G, Szymanska K, Natarajan S, Abdelhamed Z, Morgan J, Roper H, Santen G, Niks E, van der Pol W, Lindhout D, Raffaello A, De Stefani D, den Dunnen J, Sun Y, Ginjaar I, Sewry C, Hurles M, Rizzuto R, Duchen M, Muntoni F, Sheridan E. P24 Loss-of-function mutations in MICU1 cause a brain and muscle disorder linked to primary alterations in mitochondrial calcium signalling. Neuromuscul Disord 2014. [DOI: 10.1016/s0960-8966(14)70040-9] [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: 10/25/2022]
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Abdelhamed ZA, Wheway G, Szymanska K, Natarajan S, Toomes C, Inglehearn C, Johnson CA. Variable expressivity of ciliopathy neurological phenotypes that encompass Meckel-Gruber syndrome and Joubert syndrome is caused by complex de-regulated ciliogenesis, Shh and Wnt signalling defects. Hum Mol Genet 2013; 22:1358-72. [PMID: 23283079 DOI: 10.1093/hmg/dds546] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The ciliopathies are a group of heterogeneous diseases with considerable variations in phenotype for allelic conditions such as Meckel-Gruber syndrome (MKS) and Joubert syndrome (JBTS) even at the inter-individual level within families. In humans, mutations in TMEM67 (also known as MKS3) cause both MKS and JBTS, with TMEM67 encoding the orphan receptor meckelin (TMEM67) that localizes to the ciliary transition zone. We now describe the Tmem67(tm1(Dgen/H)) knockout mouse model that recapitulates the brain phenotypic variability of these human ciliopathies, with categorization of Tmem67 mutant animals into two phenotypic groups. An MKS-like incipient congenic group (F6 to F10) manifested very variable neurological features (including exencephaly, and frontal/occipital encephalocele) that were associated with the loss of primary cilia, diminished Shh signalling and dorsalization of the caudal neural tube. The 'MKS-like' group also had high de-regulated canonical Wnt/β-catenin signalling associated with hyper-activated Dishevelled-1 (Dvl-1) localized to the basal body. Conversely, a second fully congenic group (F > 10) had less variable features pathognomonic for JBTS (including cerebellar hypoplasia), and retention of abnormal bulbous cilia associated with mild neural tube ventralization. The 'JBTS-like' group had de-regulated low levels of canonical Wnt signalling associated with the loss of Dvl-1 localization to the basal body. Our results suggest that modifier alleles partially determine the variation between MKS and JBTS, implicating the interaction between Dvl-1 and meckelin, or other components of the ciliary transition zone. The Tmem67(tm1(Dgen/H)) line is unique in modelling the variable expressivity of phenotypes in these two ciliopathies.
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Affiliation(s)
- Zakia A Abdelhamed
- Ciliopathy Research Group, Section of Ophthalmology and Neurosciences, Leeds Institute of Molecular Medicine, University of Leeds, Leeds, UK
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McIntyre JC, Davis EE, Joiner A, Williams CL, Tsai IC, Jenkins PM, McEwen DP, Zhang L, Escobado J, Thomas S, Szymanska K, Johnson CA, Beales PL, Green ED, Mullikin JC, Sabo A, Muzny DM, Gibbs RA, Attié-Bitach T, Yoder BK, Reed RR, Katsanis N, Martens JR. Gene therapy rescues cilia defects and restores olfactory function in a mammalian ciliopathy model. Nat Med 2012; 18:1423-8. [PMID: 22941275 DOI: 10.1038/nm.2860] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Accepted: 06/11/2012] [Indexed: 01/02/2023]
Abstract
Cilia are evolutionarily conserved microtubule-based organelles that are crucial for diverse biological functions, including motility, cell signaling and sensory perception. In humans, alterations in the formation and function of cilia manifest clinically as ciliopathies, a growing class of pleiotropic genetic disorders. Despite the substantial progress that has been made in identifying genes that cause ciliopathies, therapies for these disorders are not yet available to patients. Although mice with a hypomorphic mutation in the intraflagellar transport protein IFT88 (Ift88Tg737Rpw mice, also known as ORPK mice)5 have been well studied, the relevance of IFT88 mutations to human pathology is unknown. We show that a mutation in IFT88 causes a hitherto unknown human ciliopathy. In vivo complementation assays in zebrafish and mIMCD3 cells show the pathogenicity of this newly discovered allele. We further show that ORPK mice are functionally anosmic as a result of the loss of cilia on their olfactory sensory neurons (OSNs). Notably, adenoviral-mediated expression of IFT88 in mature, fully differentiated OSNs of ORPK mice is sufficient to restore ciliary structures and rescue olfactory function. These studies are the first to use in vivo therapeutic treatment to reestablish cilia in a mammalian ciliopathy. More broadly, our studies indicate that gene therapy is a viable option for cellular and functional rescue of the complex ciliary organelle in established differentiated cells.
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Affiliation(s)
- Jeremy C McIntyre
- Department of Pharmacology, University of Michigan, Ann Arbor, Michigan, USA
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Szymanska K, Wheway G, Natarajan S, Higgins J, Adams M, Tomlinson DC, Johnson CA. High throughput high content reverse genetics visual screens of ciliogenesis and cilia maintenance. Cilia 2012. [PMCID: PMC3555949 DOI: 10.1186/2046-2530-1-s1-p49] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Elmehdawi F, Wheway G, Szymanska K, Adams M, High AS, Johnson CA, Robinson PA. Human Homolog of Drosophila Ariadne (HHARI) is a marker of cellular proliferation associated with nuclear bodies. Exp Cell Res 2012; 319:161-72. [PMID: 23059369 DOI: 10.1016/j.yexcr.2012.10.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [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: 07/25/2012] [Revised: 09/18/2012] [Accepted: 10/02/2012] [Indexed: 11/19/2022]
Abstract
HHARI (also known as ARIH1) is an ubiquitin-protein ligase and is the cognate of the E2, UbcH7 (UBE2L3). To establish a functional role for HHARI in cellular proliferation processes, we performed a reverse genetics screen that identified n=86/522 (16.5%) ubiquitin conjugation components that have a statistically significant effect on cell proliferation, which included HHARI as a strong hit. We then produced and validated a panel of specific antibodies that establish HHARI as both a nuclear and cytoplasmic protein that is expressed in all cell types studied. HHARI was expressed at higher levels in nuclei, and co-localized with nuclear bodies including Cajal bodies (p80 coilin, NOPP140), PML and SC35 bodies. We confirmed reduced cellular proliferation after ARIH1 knockdown with individual siRNA duplexes, in addition to significantly increased levels of apoptosis, an increased proportion of cells in G2 phase of the cell cycle, and significant reductions in total cellular RNA levels. In head and neck squamous cell carcinoma biopsies, there are higher levels of HHARI expression associated with increased levels of proliferation, compared to healthy control tissues. We demonstrate that HHARI is associated with cellular proliferation, which may be mediated through its interaction with UbcH7 and modification of proteins in nuclear bodies.
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Affiliation(s)
- Fatima Elmehdawi
- Division of Clinical Sciences, Leeds Institute of Molecular Medicine, Wellcome Trust Brenner Building, University of Leeds, Leeds, West Yorkshire, UK
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Szymanska K, Berry I, Logan CV, Cousins SR, Lindsay H, Jafri H, Raashid Y, Malik-Sharif S, Castle B, Ahmed M, Bennett C, Carlton R, Johnson CA. Founder mutations and genotype-phenotype correlations in Meckel-Gruber syndrome and associated ciliopathies. Cilia 2012; 1:18. [PMID: 23351400 PMCID: PMC3579735 DOI: 10.1186/2046-2530-1-18] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Accepted: 06/21/2012] [Indexed: 11/21/2022] Open
Abstract
Background Meckel-Gruber syndrome (MKS) is an autosomal recessive lethal condition that is a ciliopathy. MKS has marked phenotypic variability and genetic heterogeneity, with mutations in nine genes identified as causative to date. Methods Families diagnosed with Meckel-Gruber syndrome were recruited for research studies following informed consent. DNA samples were analyzed by microsatellite genotyping and direct Sanger sequencing. Results We now report the genetic analyses of 87 individuals from 49 consanguineous and 19 non-consanguineous families in an unselected cohort with reported MKS, or an associated severe ciliopathy in a kindred. Linkage and/or direct sequencing were prioritized for seven MKS genes (MKS1, TMEM216, TMEM67/MKS3, RPGRIP1L, CC2D2A, CEP290 and TMEM237) selected on the basis of reported frequency of mutations or ease of analysis. We have identified biallelic mutations in 39 individuals, of which 13 mutations are novel and previously unreported. We also confirm general genotype-phenotype correlations. Conclusions TMEM67 was the most frequently mutated gene in this cohort, and we confirm two founder splice-site mutations (c.1546 + 1 G > A and c.870-2A > G) in families of Pakistani ethnic origin. In these families, we have also identified two separate founder mutations for RPGRIP1L (c. 1945 C > T p.R649X) and CC2D2A (c. 3540delA p.R1180SfsX6). Two missense mutations in TMEM67 (c. 755 T > C p.M252T, and c. 1392 C > T p.R441C) are also probable founder mutations. These findings will contribute to improved genetic diagnosis and carrier testing for affected families, and imply the existence of further genetic heterogeneity in this syndrome.
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Affiliation(s)
- Katarzyna Szymanska
- Section of Ophthalmology and Neurosciences, Leeds Institute of Molecular Medicine, St, James's University Hospital, Leeds, UK.
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Abstract
Recent studies of the primary cilium have begun to provide further insights into ciliary ultrastructure, with an emerging picture of complex compartmentalization and molecular components that combine in functional modules. Many proteins that are mutated in ciliopathies are localized to the transition zone, a compartment of the proximal region of the cilium. The loss of these components can disrupt ciliary functions such as the control of protein entry and exit from the cilium, the possible trafficking of essential ciliary components, and the regulation of signaling cascades and control of the cell cycle. The discovery of functional modules within the primary cilium may help in understanding the variable phenotypes and pleiotropy in ciliopathies.
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Affiliation(s)
- Katarzyna Szymanska
- Section of Ophthalmology and Neurosciences, Leeds Institute of Molecular Medicine, St, James's University Hospital, Leeds, UK.
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Huang L, Szymanska K, Jensen VL, Janecke AR, Innes AM, Davis EE, Frosk P, Li C, Willer JR, Chodirker BN, Greenberg CR, McLeod DR, Bernier FP, Chudley AE, Müller T, Shboul M, Logan CV, Loucks CM, Beaulieu CL, Bowie RV, Bell SM, Adkins J, Zuniga FI, Ross KD, Wang J, Ban MR, Becker C, Nürnberg P, Douglas S, Craft CM, Akimenko MA, Hegele RA, Ober C, Utermann G, Bolz HJ, Bulman DE, Katsanis N, Blacque OE, Doherty D, Parboosingh JS, Leroux MR, Johnson CA, Boycott KM. TMEM237 is mutated in individuals with a Joubert syndrome related disorder and expands the role of the TMEM family at the ciliary transition zone. Am J Hum Genet 2011; 89:713-30. [PMID: 22152675 PMCID: PMC3234373 DOI: 10.1016/j.ajhg.2011.11.005] [Citation(s) in RCA: 152] [Impact Index Per Article: 11.7] [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: 08/26/2011] [Revised: 10/25/2011] [Accepted: 11/08/2011] [Indexed: 12/23/2022] Open
Abstract
Joubert syndrome related disorders (JSRDs) have broad but variable phenotypic overlap with other ciliopathies. The molecular etiology of this overlap is unclear but probably arises from disrupting common functional module components within primary cilia. To identify additional module elements associated with JSRDs, we performed homozygosity mapping followed by next-generation sequencing (NGS) and uncovered mutations in TMEM237 (previously known as ALS2CR4). We show that loss of the mammalian TMEM237, which localizes to the ciliary transition zone (TZ), results in defective ciliogenesis and deregulation of Wnt signaling. Furthermore, disruption of Danio rerio (zebrafish) tmem237 expression produces gastrulation defects consistent with ciliary dysfunction, and Caenorhabditis elegans jbts-14 genetically interacts with nphp-4, encoding another TZ protein, to control basal body-TZ anchoring to the membrane and ciliogenesis. Both mammalian and C. elegans TMEM237/JBTS-14 require RPGRIP1L/MKS5 for proper TZ localization, and we demonstrate additional functional interactions between C. elegans JBTS-14 and MKS-2/TMEM216, MKSR-1/B9D1, and MKSR-2/B9D2. Collectively, our findings integrate TMEM237/JBTS-14 in a complex interaction network of TZ-associated proteins and reveal a growing contribution of a TZ functional module to the spectrum of ciliopathy phenotypes.
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Affiliation(s)
- Lijia Huang
- Children's Hospital of Eastern Ontario Research Institute, University of Ottawa, Ottawa, Ontario, Canada
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Adams M, Simms RJ, Abdelhamed Z, Dawe HR, Szymanska K, Logan CV, Wheway G, Pitt E, Gull K, Knowles MA, Blair E, Cross SH, Sayer JA, Johnson CA. A meckelin-filamin A interaction mediates ciliogenesis. Hum Mol Genet 2011; 21:1272-86. [PMID: 22121117 DOI: 10.1093/hmg/ddr557] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
MKS3, encoding the transmembrane receptor meckelin, is mutated in Meckel-Gruber syndrome (MKS), an autosomal-recessive ciliopathy. Meckelin localizes to the primary cilium, basal body and elsewhere within the cell. Here, we found that the cytoplasmic domain of meckelin directly interacts with the actin-binding protein filamin A, potentially at the apical cell surface associated with the basal body. Mutations in FLNA, the gene for filamin A, cause periventricular heterotopias. We identified a single consanguineous patient with an MKS-like ciliopathy that presented with both MKS and cerebellar heterotopia, caused by an unusual in-frame deletion mutation in the meckelin C-terminus at the region of interaction with filamin A. We modelled this mutation and found it to abrogate the meckelin-filamin A interaction. Furthermore, we found that loss of filamin A by siRNA knockdown, in patient cells, and in tissues from Flna(Dilp2) null mouse embryos results in cellular phenotypes identical to those caused by meckelin loss, namely basal body positioning and ciliogenesis defects. In addition, morpholino knockdown of flna in zebrafish embryos significantly increases the frequency of dysmorphology and severity of ciliopathy developmental defects caused by mks3 knockdown. Our results suggest that meckelin forms a functional complex with filamin A that is disrupted in MKS and causes defects in neuronal migration and Wnt signalling. Furthermore, filamin A has a crucial role in the normal processes of ciliogenesis and basal body positioning. Concurrent with these processes, the meckelin-filamin A signalling axis may be a key regulator in maintaining correct, normal levels of Wnt signalling.
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Affiliation(s)
- Matthew Adams
- Ciliopathy Research Group, Section of Ophthalmology and Neurosciences, Leeds Institute of Molecular Medicine, University of Leeds, Leeds LS9 7TF, UK
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Logan CV, Lucke B, Pottinger C, Abdelhamed ZA, Parry DA, Szymanska K, Diggle CP, van Riesen A, Morgan JE, Markham G, Ellis I, Manzur AY, Markham AF, Shires M, Helliwell T, Scoto M, Hübner C, Bonthron DT, Taylor GR, Sheridan E, Muntoni F, Carr IM, Schuelke M, Johnson CA. Mutations in MEGF10, a regulator of satellite cell myogenesis, cause early onset myopathy, areflexia, respiratory distress and dysphagia (EMARDD). Nat Genet 2011; 43:1189-92. [PMID: 22101682 DOI: 10.1038/ng.995] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Accepted: 10/05/2011] [Indexed: 02/08/2023]
Abstract
Infantile myopathies with diaphragmatic paralysis are genetically heterogeneous, and clinical symptoms do not assist in differentiating between them. We used phased haplotype analysis with subsequent targeted exome sequencing to identify MEGF10 mutations in a previously unidentified type of infantile myopathy with diaphragmatic weakness, areflexia, respiratory distress and dysphagia. MEGF10 is highly expressed in activated satellite cells and regulates their proliferation as well as their differentiation and fusion into multinucleated myofibers, which are greatly reduced in muscle from individuals with early onset myopathy, areflexia, respiratory distress and dysphagia.
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Affiliation(s)
- Clare V Logan
- Leeds Institute of Molecular Medicine, The University of Leeds, UK
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33
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Davis EE, Zhang Q, Liu Q, Diplas BH, Davey LM, Hartley J, Stoetzel C, Szymanska K, Ramaswami G, Logan CV, Muzny DM, Young AC, Wheeler DA, Cruz P, Morgan M, Lewis LR, Cherukuri P, Maskeri B, Hansen NF, Mullikin JC, Blakesley RW, Bouffard GG, Gyapay G, Rieger S, Tönshoff B, Kern I, Soliman NA, Neuhaus TJ, Swoboda KJ, Kayserili H, Gallagher TE, Lewis RA, Bergmann C, Otto EA, Saunier S, Scambler PJ, Beales PL, Gleeson JG, Maher ER, Attié-Bitach T, Dollfus H, Johnson CA, Green ED, Gibbs RA, Hildebrandt F, Pierce EA, Katsanis N. Erratum: Corrigendum: TTC21B contributes both causal and modifying alleles across the ciliopathy spectrum. Nat Genet 2011. [DOI: 10.1038/ng0511-499b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Davis EE, Zhang Q, Liu Q, Diplas BH, Davey LM, Hartley J, Stoetzel C, Szymanska K, Ramaswami G, Logan CV, Muzny DM, Young AC, Wheeler DA, Cruz P, Morgan M, Lewis LR, Cherukuri P, Maskeri B, Hansen NF, Mullikin JC, Blakesley RW, Bouffard GG, Gyapay G, Rieger S, Tönshoff B, Kern I, Soliman NA, Neuhaus TJ, Swoboda KJ, Kayserili H, Gallagher TE, Lewis RA, Bergmann C, Otto EA, Saunier S, Scambler PJ, Beales PL, Gleeson JG, Maher ER, Attié-Bitach T, Dollfus H, Johnson CA, Green ED, Gibbs RA, Hildebrandt F, Pierce EA, Katsanis N. TTC21B contributes both causal and modifying alleles across the ciliopathy spectrum. Nat Genet 2011; 43:189-96. [PMID: 21258341 PMCID: PMC3071301 DOI: 10.1038/ng.756] [Citation(s) in RCA: 260] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2010] [Accepted: 12/22/2010] [Indexed: 12/17/2022]
Abstract
Ciliary dysfunction leads to a broad range of overlapping phenotypes, termed collectively as ciliopathies. This grouping is underscored by genetic overlap, where causal genes can also contribute modifying alleles to clinically distinct disorders. Here we show that mutations in TTC21B/IFT139, encoding a retrograde intraflagellar transport (IFT) protein, cause both isolated nephronophthisis (NPHP) and syndromic Jeune Asphyxiating Thoracic Dystrophy (JATD). Moreover, although systematic medical resequencing of a large, clinically diverse ciliopathy cohort and matched controls showed a similar frequency of rare changes, in vivo and in vitro evaluations unmasked a significant enrichment of pathogenic alleles in cases, suggesting that TTC21B contributes pathogenic alleles to ∼5% of ciliopathy patients. Our data illustrate how genetic lesions can be both causally associated with diverse ciliopathies, as well as interact in trans with other disease-causing genes, and highlight how saturated resequencing followed by functional analysis of all variants informs the genetic architecture of disorders.
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Affiliation(s)
- Erica E Davis
- Center for Human Disease Modeling, Department of Cell Biology, Duke University Medical Center, Durham, North Carolina, USA
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Szczaluba K, Szymanska K, Bekiesinska-Figatowska M, Jurkiewicz E, Madzik J, Obersztyn E, Mazurczak T. Pontine tegmental cap dysplasia: a hindbrain malformation caused by defective neuronal migration. Neurology 2010; 74:1835. [PMID: 20513821 DOI: 10.1212/wnl.0b013e3181e0f7f8] [Citation(s) in RCA: 12] [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] [Indexed: 11/15/2022] Open
Affiliation(s)
- K Szczaluba
- Department of Medical Genetics, Institute of Mother and Child, Kasprzaka 17A St, 01-211 Warsaw, Poland.
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Carr IM, Szymanska K, Sheridan E, Markham AF, Bonthron DT, Johnson CA. Shadow autozygosity mapping by linkage exclusion (SAMPLE): a simple strategy to identify the genetic basis of lethal autosomal recessive disorders. Hum Mutat 2010; 30:1642-9. [PMID: 19842213 DOI: 10.1002/humu.21105] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Autozygosity mapping has been invaluable for determining the genetic basis of lethal autosomal recessive disorders, but this approach remains challenging because DNA from affected individuals may often be unavailable or of insufficient quality for extensive molecular genetic studies. To circumvent these difficulties, we developed a computer program called "SAMPLE" (for shadow autozygosity mapping by linkage exclusion) to enhance autozygosity mapping through the empirical analysis of haplotypes of unaffected individuals in consanguineous families. Single nucleotide polymorphism (SNP) genotyping of unaffected individuals in complex consanguineous pedigrees is used to infer limited chromosomal regions compatible with linkage to a potential disease locus, and to allow the immediate prioritization of potential regions of interest. Further limited genotyping then enables the rapid confirmation and fine mapping of a disease locus. We demonstrate the utility of this strategy by using genotyping data from only parents and unaffected siblings, in three consanguineous families affected with Meckel-Gruber syndrome, to correctly infer the location of the MKS3/TMEM67 locus on chromosome 8q22.1. This strategy is practicable only with the recent advances in whole genome genotyping by high-density SNP microarrays, and could not be easily implemented in approaches that rely on microsatellite markers. SAMPLE is available at http://dna.leeds.ac.uk/sample/.
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Affiliation(s)
- Ian M Carr
- Division of Molecular & Translational Medicine, Leeds Institute of Molecular Medicine, University of Leeds, Leeds, United Kingdom
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Kusmierska K, Jansen EEW, Jakobs C, Szymanska K, Malunowicz E, Meilei D, Thony B, Blau N, Tryfon J, Rokicki D, Pronicka E, Sykut-Cegielska J. Sepiapterin reductase deficiency in a 2-year-old girl with incomplete response to treatment during short-term follow-up. J Inherit Metab Dis 2009; 32 Suppl 1:S5-10. [PMID: 19130291 DOI: 10.1007/s10545-008-1009-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2008] [Revised: 10/11/2008] [Accepted: 10/15/2008] [Indexed: 11/25/2022]
Abstract
Sepiapterin reductase (SR) catalyses the last step in the tetrahydrobiopterin biosynthesis pathway; it converts 6-pyruvoyl-tetrahydropterin (6-PTP) to BH(4) in an NADPH-dependent reaction. SR deficiency is a very rare autosomal recessive disorder with normal phenylalanine (Phe) concentration in blood and diagnostic abnormalities are detected in CSF. We present a 16-month-old girl with SR deficiency. From the newborn period she presented with an adaptation regulatory disorder. At the age of 3 months, abnormal eye movements with dystonic signs and at 4.5 months psychomotor retardation were noticed. Since that time axial hypotonia with limb spasticity (or rather delayed reflex development), gastro-oesophageal reflux and fatigue at the end of the day has been observed. Brain MRI was normal; EEG was without epileptiform discharges. Analysis of biogenic amine metabolites in CSF at the age of 16 months showed very low HVA and 5-HIAA concentrations. Analysis of CSF pterins revealed strongly elevated dihydrobiopterin (BH(2)), slightly elevated neopterin and elevated sepiapterin levels. Plasma and CSF amino acids concentrations were normal. A phenylalanine loading test showed increased Phe after 1 h, 2 h and 4 h and very high Phe/Tyr ratios. SR deficiency was confirmed in fibroblasts and a novel homozygous g.1330C>G (p.N127K) SPR mutation was identified. On L-dopa and then additionally 5-hydroxytryptophan, the girl showed slow but remarkable progress in motor and intellectual ability. Now, at the age of 3 years, she is able to sit; expressive speech is delayed (to 1 1/2 years), passive speech is well developed. Her visual-motor skills, eye-hand coordination and social development correspond to the age of 2 1/2 years.
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Affiliation(s)
- K Kusmierska
- Department of Biochemistry and Experimental Medicine, The Children's Memorial Health Institute, Al. Dzieci Polskich 20, 04-830, Warsaw, Poland.
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Gunay-Aygun M, Parisi MA, Doherty D, Tuchman M, Tsilou E, Kleiner DE, Huizing M, Turkbey B, Choyke P, Guay-Woodford L, Heller T, Szymanska K, Johnson CA, Glass I, Gahl WA. MKS3-related ciliopathy with features of autosomal recessive polycystic kidney disease, nephronophthisis, and Joubert Syndrome. J Pediatr 2009; 155:386-92.e1. [PMID: 19540516 PMCID: PMC2925444 DOI: 10.1016/j.jpeds.2009.03.045] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [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: 11/25/2008] [Revised: 01/20/2009] [Accepted: 03/20/2009] [Indexed: 01/15/2023]
Abstract
OBJECTIVES To describe 3 children with mutations in a Meckel syndrome gene (MKS3), with features of autosomal recessive polycystic kidney disease (ARPKD), nephronophthisis, and Joubert syndrome (JS). STUDY DESIGN Biochemical evaluations, magnetic resonance and ultrasound imaging, electroretinograms, IQ testing, and sequence analysis of the PKHD1 and MKS3 genes were performed. Functional consequences of the MKS3 mutations were evaluated by cDNA sequencing and transfection studies with constructs of meckelin, the protein product of MKS3. RESULTS These 3 children with MKS3 mutations had features typical of ARPKD, that is, enlarged, diffusely microcystic kidneys and early-onset severe hypertension. They also exhibited early-onset chronic anemia, a feature of nephronophthisis, and speech and oculomotor apraxia, suggestive of JS. Magnetic resonance imaging of the brain, originally interpreted as normal, revealed midbrain and cerebellar abnormalities in the spectrum of the "molar tooth sign" that characterizes JS. CONCLUSIONS These findings expand the phenotypes associated with MKS3 mutations. MKS3-related ciliopathies should be considered in patients with an ARPKD-like phenotype, especially in the presence of speech and oculomotor apraxia. In such patients, careful expert evaluation of the brain images can be beneficial because the brain malformations can be subtle.
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Affiliation(s)
- Meral Gunay-Aygun
- Medical Genetics Branch, National Human Genome Research Institute, Bethesda, MD 20892, USA.
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Szymanska K, Adams M, Logan C, Wheway G, Johnson C. 16-P020 Determining the pathogenic potential of missense in-frame deletion and synonymous sequence variants: Subcellular localization defects for mutant forms of the ciliary protein meckelin. Mech Dev 2009. [DOI: 10.1016/j.mod.2009.06.711] [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: 11/15/2022]
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Adams M, Dawe H, Wheway G, Szymanska K, Logan C, Noegel A, Gull K, Johnson C. 16-P005 Mutations in the lethal ciliopathy Meckel–Gruber syndrome alter the subcellular distribution of actin-binding proteins and disrupt the actin cytoskeleton. Mech Dev 2009. [DOI: 10.1016/j.mod.2009.06.696] [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: 10/20/2022]
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41
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Dawe HR, Adams M, Wheway G, Szymanska K, Logan CV, Noegel AA, Gull K, Johnson CA. Nesprin-2 interacts with meckelin and mediates ciliogenesis via remodelling of the actin cytoskeleton. J Cell Sci 2009; 122:2716-26. [PMID: 19596800 DOI: 10.1242/jcs.043794] [Citation(s) in RCA: 107] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Meckel-Gruber syndrome (MKS) is a severe autosomal recessively inherited disorder caused by mutations in genes that encode components of the primary cilium and basal body. Here we show that two MKS proteins, MKS1 and meckelin, that are required for centrosome migration and ciliogenesis interact with actin-binding isoforms of nesprin-2 (nuclear envelope spectrin repeat protein 2, also known as Syne-2 and NUANCE). Nesprins are important scaffold proteins for maintenance of the actin cytoskeleton, nuclear positioning and nuclear-envelope architecture. However, in ciliated-cell models, meckelin and nesprin-2 isoforms colocalized at filopodia prior to the establishment of cell polarity and ciliogenesis. Loss of nesprin-2 and nesprin-1 shows that both mediate centrosome migration and are then essential for ciliogenesis, but do not otherwise affect apical-basal polarity. Loss of meckelin (by siRNA and in a patient cell-line) caused a dramatic remodelling of the actin cytoskeleton, aberrant localization of nesprin-2 isoforms to actin stress-fibres and activation of RhoA signalling. These findings further highlight the important roles of the nesprins during cellular and developmental processes, particularly in general organelle positioning, and suggest that a mechanistic link between centrosome positioning, cell polarity and the actin cytoskeleton is required for centrosomal migration and is essential for early ciliogenesis.
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Affiliation(s)
- Helen R Dawe
- Sir William Dunn School of Pathology, University of Oxford, South Parks Road, Oxford OX1 3RE, UK
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42
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Niewczas M, Ziółkowski J, Rancewicz Z, Szymanska K, Kwiatkowski A, Gałazka T, Senatorski G, Paczek L. Tuberculosis in patients after renal transplantation remains still a clinical problem. Transplant Proc 2002; 34:677-9. [PMID: 12009662 DOI: 10.1016/s0041-1345(01)02885-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- M Niewczas
- Department of Immunology, Transplantology and Internal Diseases, Transplantation Institute, Medical University of Warsaw, 59 Nowogrodzka Street, 02-006 Warsaw, Poland
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Fiedor P, Szymanska K, Tomaszewska A, Socha K, Oluwole SF, Licińska I, Mazurek AP, Rowinski W, Hardy MA. Detection and morphologic evaluation of allotransplanted rat pancreatic islet cells. Transplant Proc 1997; 29:2086. [PMID: 9193538 DOI: 10.1016/s0041-1345(97)00243-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- P Fiedor
- Department of Surgery, College of Physicians and Surgeons of Columbia University, New York, NY 10032, USA
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Abstract
OBJECTIVE To evaluate the restoration of the ureter of the dog after resection of a 5 cm-long middle segment. MATERIALS AND METHODS Eight dogs underwent resection of the middle segment of the ureter, after which a 6-8 F Bard ureteric stent modelling catheter was inserted into both remaining portions of the ureter for 3 months. One month after removal of the stent the animals were killed and their ureters examined both grossly and microscopically. Paraffin-embedded sections were subjected to microscopic and immunohistochemical studies. RESULTS The continuity of the ureter was restored but the reconstructed segment was narrowed to a variable extent. The wall of the ureter was lined by normal urothelium but consisted of fibrous connective tissue which failed to produce a regular coat. The reconstructed segment showed no smooth muscle cells (negative staining with azan and a negative reaction with monoclonal antibodies against desmin). A few smooth myocytes were found only at the border with intact portions of the ureter. CONCLUSIONS The surgical procedure resulted in the restoration of ureteric continuity by repair and not by regeneration of its wall.
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Affiliation(s)
- B Kuzaka
- Department of Urology, Warsaw Medical School, Poland
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45
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Fiedor P, Wierzbicki Z, Szymanska K, Pykalo R, Rowinski W. The effect of a pancreatic allograft distal arteriovenous fistula on islet hormone secretions. Transplant Proc 1995; 27:3280-1. [PMID: 8539955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- P Fiedor
- Department of General and Transplantation Surgery, Warsaw Medical School, Poland
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46
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Biernacka D, Szymanska K, Tomaszewska A, Grzela T, Moskalewski S. Microwave-assisted staining of mucosal mast cells and granulated intra-epithelial lymphocytes after formalin fixation. Histochem J 1993; 25:854-856. [PMID: 7509328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Rat jejunum was fixed with either formalin or methanol-formalin acetic acid (MFAA) and stained with Astra Blue or Alcian Blue with or without microwave irradiation. Staining of both mucosal mast cells and granulated intra-epithelial lymphocytes after formalin fixation was considerably improved by microwave irradiation. On the other hand, microwave irradiation slightly impaired staining of mucosal mast cells (MMC) and even more strongly granulated intra-epithelial lymphocytes (GIEL) after MFAA fixation.
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Affiliation(s)
- D Biernacka
- Department of Pathological Anatomy, Warsaw Medical School, Poland
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47
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Abstract
The technique for detection of neoplastic cells in the seminal fluid of patients with testicular malignancies is presented. This preliminary study of 7 patients with testicular tumors and 50 controls demonstrates the possibility of using cytological examination of the sperm as the screening method for testicular tumors.
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Affiliation(s)
- M Czaplicki
- Department of Urology, Medical Academy, Warsaw, Poland
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48
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Sawicki W, Kucharczyk K, Szymanska K, Kujawa M. Lamina propria macrophages of intestine of the guinea pig. Possible role in phagocytosis of migrating cells. Gastroenterology 1977; 73:1340-4. [PMID: 562301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
The macrophages of lamina propria were commonly found both in the small and the large intestine of guinea pigs, mice, rats, and in human duodenum. The frequency of macrophage occurrence was highest in the lamina propria of villous apices of the small intestine and beneath the lining epithelium of the large intestine. In the cytoplasm of lamina propria macrophages localized in those regions, Feulgen-positive (DNA-containing) granules could be observed particularly in the guinea pig intestine. Autoradiography of the latter, 3 to 5 days after [3H]thymidine injection, showed the coincidence of occurrence of labeled Feulgen-positive granules in the macrophage cytoplasm with the appearance of labeled epithelial cells and sheath-fibroblasts in the region of lamina propria containing the highest accumulation of macrophages, i.e., at the apices of villi of the small intestine and beneath the lining epithelium of the large intestine. Labeled nuclei of macrophages were observed scarcely and much less frequently than were labeled cytoplasmic granules. No labeled Feulgen-positive granules could be seen in macrophages 1/2 hr, 1, 2, and 7 days after [3H]thymidine injection. It is suggested that the lamina propria macrophages may play a role in the phagocytosis of some migrating cells of the intestinal mucosa, most probably of the sheath-fibroblasts and/or intraepithelial lymphocytes.
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