TULP1 Mutations Causing Early-Onset Retinal Degeneration: Preserved but Insensitive Macular Cones
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Educational Paper Ciliopathies
Eur J Pediatr (2012) 171:1285–1300 DOI 10.1007/s00431-011-1553-z REVIEW Educational paper Ciliopathies Carsten Bergmann Received: 11 June 2011 /Accepted: 3 August 2011 /Published online: 7 September 2011 # The Author(s) 2011. This article is published with open access at Springerlink.com Abstract Cilia are antenna-like organelles found on the (NPHP) . Ivemark syndrome . Meckel syndrome (MKS) . surface of most cells. They transduce molecular signals Joubert syndrome (JBTS) . Bardet–Biedl syndrome (BBS) . and facilitate interactions between cells and their Alstrom syndrome . Short-rib polydactyly syndromes . environment. Ciliary dysfunction has been shown to Jeune syndrome (ATD) . Ellis-van Crefeld syndrome (EVC) . underlie a broad range of overlapping, clinically and Sensenbrenner syndrome . Primary ciliary dyskinesia genetically heterogeneous phenotypes, collectively (Kartagener syndrome) . von Hippel-Lindau (VHL) . termed ciliopathies. Literally, all organs can be affected. Tuberous sclerosis (TSC) . Oligogenic inheritance . Modifier. Frequent cilia-related manifestations are (poly)cystic Mutational load kidney disease, retinal degeneration, situs inversus, cardiac defects, polydactyly, other skeletal abnormalities, and defects of the central and peripheral nervous Introduction system, occurring either isolated or as part of syn- dromes. Characterization of ciliopathies and the decisive Defective cellular organelles such as mitochondria, perox- role of primary cilia in signal transduction and cell isomes, and lysosomes are well-known -
Ciliopathies Gene Panel
Ciliopathies Gene Panel Contact details Introduction Regional Genetics Service The ciliopathies are a heterogeneous group of conditions with considerable phenotypic overlap. Levels 4-6, Barclay House These inherited diseases are caused by defects in cilia; hair-like projections present on most 37 Queen Square cells, with roles in key human developmental processes via their motility and signalling functions. Ciliopathies are often lethal and multiple organ systems are affected. Ciliopathies are London, WC1N 3BH united in being genetically heterogeneous conditions and the different subtypes can share T +44 (0) 20 7762 6888 many clinical features, predominantly cystic kidney disease, but also retinal, respiratory, F +44 (0) 20 7813 8578 skeletal, hepatic and neurological defects in addition to metabolic defects, laterality defects and polydactyly. Their clinical variability can make ciliopathies hard to recognise, reflecting the ubiquity of cilia. Gene panels currently offer the best solution to tackling analysis of genetically Samples required heterogeneous conditions such as the ciliopathies. Ciliopathies affect approximately 1:2,000 5ml venous blood in plastic EDTA births. bottles (>1ml from neonates) Ciliopathies are generally inherited in an autosomal recessive manner, with some autosomal Prenatal testing must be arranged dominant and X-linked exceptions. in advance, through a Clinical Genetics department if possible. Referrals Amniotic fluid or CV samples Patients presenting with a ciliopathy; due to the phenotypic variability this could be a diverse set should be sent to Cytogenetics for of features. For guidance contact the laboratory or Dr Hannah Mitchison dissecting and culturing, with ([email protected]) / Prof Phil Beales ([email protected]) instructions to forward the sample to the Regional Molecular Genetics Referrals will be accepted from clinical geneticists and consultants in nephrology, metabolic, laboratory for analysis respiratory and retinal diseases. -
Mouse Mutants As Models for Congenital Retinal Disorders
Experimental Eye Research 81 (2005) 503–512 www.elsevier.com/locate/yexer Review Mouse mutants as models for congenital retinal disorders Claudia Dalke*, Jochen Graw GSF-National Research Center for Environment and Health, Institute of Developmental Genetics, D-85764 Neuherberg, Germany Received 1 February 2005; accepted in revised form 1 June 2005 Available online 18 July 2005 Abstract Animal models provide a valuable tool for investigating the genetic basis and the pathophysiology of human diseases, and to evaluate therapeutic treatments. To study congenital retinal disorders, mouse mutants have become the most important model organism. Here we review some mouse models, which are related to hereditary disorders (mostly congenital) including retinitis pigmentosa, Leber’s congenital amaurosis, macular disorders and optic atrophy. q 2005 Elsevier Ltd. All rights reserved. Keywords: animal model; retina; mouse; gene mutation; retinal degeneration 1. Introduction Although mouse models are a good tool to investigate retinal disorders, one should keep in mind that the mouse Mice suffering from hereditary eye defects (and in retina is somehow different from a human retina, particular from retinal degenerations) have been collected particularly with respect to the number and distribution of since decades (Keeler, 1924). They allow the study of the photoreceptor cells. The mouse as a nocturnal animal molecular and histological development of retinal degener- has a retina dominated by rods; in contrast, cones are small ations and to characterize the genetic basis underlying in size and represent only 3–5% of the photoreceptors. Mice retinal dysfunction and degeneration. The recent progress of do not form cone-rich areas like the human fovea. -
Supplementary Table 8. Cpcp PPI Network Details for Significantly Changed Proteins, As Identified in 3.2, Underlying Each of the Five Functional Domains
Supplementary Table 8. cPCP PPI network details for significantly changed proteins, as identified in 3.2, underlying each of the five functional domains. The network nodes represent each significant protein, followed by the list of interactors. Note that identifiers were converted to gene names to facilitate PPI database queries. Functional Domain Node Interactors Development and Park7 Rack1 differentiation Kcnma1 Atp6v1a Ywhae Ywhaz Pgls Hsd3b7 Development and Prdx6 Ncoa3 differentiation Pla2g4a Sufu Ncf2 Gstp1 Grin2b Ywhae Pgls Hsd3b7 Development and Atp1a2 Kcnma1 differentiation Vamp2 Development and Cntn1 Prnp differentiation Ywhaz Clstn1 Dlg4 App Ywhae Ywhab Development and Rac1 Pak1 differentiation Cdc42 Rhoa Dlg4 Ctnnb1 Mapk9 Mapk8 Pik3cb Sod1 Rrad Epb41l2 Nono Ltbp1 Evi5 Rbm39 Aplp2 Smurf2 Grin1 Grin2b Xiap Chn2 Cav1 Cybb Pgls Ywhae Development and Hbb-b1 Atp5b differentiation Hba Kcnma1 Got1 Aldoa Ywhaz Pgls Hsd3b4 Hsd3b7 Ywhae Development and Myh6 Mybpc3 differentiation Prkce Ywhae Development and Amph Capn2 differentiation Ap2a2 Dnm1 Dnm3 Dnm2 Atp6v1a Ywhab Development and Dnm3 Bin1 differentiation Amph Pacsin1 Grb2 Ywhae Bsn Development and Eef2 Ywhaz differentiation Rpgrip1l Atp6v1a Nphp1 Iqcb1 Ezh2 Ywhae Ywhab Pgls Hsd3b7 Hsd3b4 Development and Gnai1 Dlg4 differentiation Development and Gnao1 Dlg4 differentiation Vamp2 App Ywhae Ywhab Development and Psmd3 Rpgrip1l differentiation Psmd4 Hmga2 Development and Thy1 Syp differentiation Atp6v1a App Ywhae Ywhaz Ywhab Hsd3b7 Hsd3b4 Development and Tubb2a Ywhaz differentiation Nphp4 -
Perkinelmer Genomics to Request the Saliva Swab Collection Kit for Patients That Cannot Provide a Blood Sample As Whole Blood Is the Preferred Sample
Eye Disorders Comprehensive Panel Test Code D4306 Test Summary This test analyzes 211 genes that have been associated with ocular disorders. Turn-Around-Time (TAT)* 3 - 5 weeks Acceptable Sample Types Whole Blood (EDTA) (Preferred sample type) DNA, Isolated Dried Blood Spots Saliva Acceptable Billing Types Self (patient) Payment Institutional Billing Commercial Insurance Indications for Testing Individuals with an eye disease suspected to be genetic in origin Individuals with a family history of eye disease Individuals suspected to have a syndrome associated with an eye disease Test Description This panel analyzes 211 genes that have been associated with ocular disorders. Both sequencing and deletion/duplication (CNV) analysis will be performed on the coding regions of all genes included (unless otherwise marked). All analysis is performed utilizing Next Generation Sequencing (NGS) technology. CNV analysis is designed to detect the majority of deletions and duplications of three exons or greater in size. Smaller CNV events may also be detected and reported, but additional follow-up testing is recommended if a smaller CNV is suspected. All variants are classified according to ACMG guidelines. Condition Description Diseases associated with this panel include microphtalmia, anophthalmia, coloboma, progressive external ophthalmoplegia, optic nerve atrophy, retinal dystrophies, retinitis pigementosa, macular degeneration, flecked-retinal disorders, Usher syndrome, albinsm, Aloprt syndrome, Bardet Biedl syndrome, pulmonary fibrosis, and Hermansky-Pudlak -
Research Article Mouse Model Resources for Vision Research
Hindawi Publishing Corporation Journal of Ophthalmology Volume 2011, Article ID 391384, 12 pages doi:10.1155/2011/391384 Research Article Mouse Model Resources for Vision Research Jungyeon Won, Lan Ying Shi, Wanda Hicks, Jieping Wang, Ronald Hurd, Jurgen¨ K. Naggert, Bo Chang, and Patsy M. Nishina The Jackson Laboratory, 600 Main Street, Bar Harbor, ME 04609, USA Correspondence should be addressed to Patsy M. Nishina, [email protected] Received 1 July 2010; Accepted 21 September 2010 Academic Editor: Radha Ayyagari Copyright © 2011 Jungyeon Won et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The need for mouse models, with their well-developed genetics and similarity to human physiology and anatomy, is clear and their central role in furthering our understanding of human disease is readily apparent in the literature. Mice carrying mutations that alter developmental pathways or cellular function provide model systems for analyzing defects in comparable human disorders and for testing therapeutic strategies. Mutant mice also provide reproducible, experimental systems for elucidating pathways of normal development and function. Two programs, the Eye Mutant Resource and the Translational Vision Research Models, focused on providing such models to the vision research community are described herein. Over 100 mutant lines from the Eye Mutant Resource and 60 mutant lines from the Translational Vision Research Models have been developed. The ocular diseases of the mutant lines include a wide range of phenotypes, including cataracts, retinal dysplasia and degeneration, and abnormal blood vessel formation. -
Novel Gene Discovery in Primary Ciliary Dyskinesia
Novel Gene Discovery in Primary Ciliary Dyskinesia Mahmoud Raafat Fassad Genetics and Genomic Medicine Programme Great Ormond Street Institute of Child Health University College London A thesis submitted in conformity with the requirements for the degree of Doctor of Philosophy University College London 1 Declaration I, Mahmoud Raafat Fassad, confirm that the work presented in this thesis is my own. Where information has been derived from other sources, I confirm that this has been indicated in the thesis. 2 Abstract Primary Ciliary Dyskinesia (PCD) is one of the ‘ciliopathies’, genetic disorders affecting either cilia structure or function. PCD is a rare recessive disease caused by defective motile cilia. Affected individuals manifest with neonatal respiratory distress, chronic wet cough, upper respiratory tract problems, progressive lung disease resulting in bronchiectasis, laterality problems including heart defects and adult infertility. Early diagnosis and management are essential for better respiratory disease prognosis. PCD is a highly genetically heterogeneous disorder with causal mutations identified in 36 genes that account for the disease in about 70% of PCD cases, suggesting that additional genes remain to be discovered. Targeted next generation sequencing was used for genetic screening of a cohort of patients with confirmed or suggestive PCD diagnosis. The use of multi-gene panel sequencing yielded a high diagnostic output (> 70%) with mutations identified in known PCD genes. Over half of these mutations were novel alleles, expanding the mutation spectrum in PCD genes. The inclusion of patients from various ethnic backgrounds revealed a striking impact of ethnicity on the composition of disease alleles uncovering a significant genetic stratification of PCD in different populations. -
Clinical and Molecular Genetic Aspects of Leber's Congenital
Clinical and Molecular Genetic Aspects 10 of Leber’s Congenital Amaurosis Robert Henderson, Birgit Lorenz, Anthony T. Moore | Core Messages of about 2–3 per 100,000 live births [119, 50]. ∑ Leber’s congenital amaurosis (LCA) is a It occurs more frequently in communities severe generalized retinal dystrophy which where consanguineous marriages are common presents at birth or soon after with nystag- [128]. mus and poor vision and is accompanied by a nonrecordable or severely attenuated ERG 10.1.1 ∑ As some forms are associated with better Clinical Findings vision during childhood and nystagmus may be absent, a wider definition is early LCA is characterized clinically by severe visual onset severe retinal dystrophy (EOSRD) impairment and nystagmus from early infancy with LCA being the most severe form associated with a nonrecordable or substantial- ∑ It is nearly always a recessive condition but ly abnormal rod and cone electroretinogram there is considerable genetic heterogeneity (ERG) [32, 31, 118]. The pupils react sluggishly ∑ There are eight known causative genes and and, although the fundus appearance is often three further loci that have been implicated normal in the early stages,a variety of abnormal in LCA/EOSRD retinal changes may be seen. These include pe- ∑ The phenotype varies with the genes ripheral white dots at the level of the retinal pig- involved; not all are progressive. At present, ment epithelium, and the typical bone-spicule a distinct phenotype has been elaborated pigmentation seen in retinitis pigmentosa. for patients with mutations in RPE65 Other associated findings include the ocu- ∑ Although LCA is currently not amenable to lodigital sign, microphthalmos, enophthalmos, treatment, gene therapy appears to be a ptosis, strabismus, keratoconus [28], high re- promising therapeutic option, especially fractive error [143],cataract,macular coloboma, for those children with mutations in RPE65 optic disc swelling, and attenuated retinal vas- culature. -
Phosphoinositides Regulate Ciliary Protein Trafficking to Modulate
Article Phosphoinositides Regulate Ciliary Protein Trafficking to Modulate Hedgehog Signaling Graphical Abstract Authors Francesc R. Garcia-Gonzalo, Siew Cheng Phua, Elle C. Roberson, ..., Ste´ phane Schurmans, Takanari Inoue, Jeremy F. Reiter Correspondence [email protected] (T.I.), [email protected] (J.F.R.) In Brief Garcia-Gonzalo et al. show that different domains of the ciliary membrane contain different phosphoinositides. The ciliopathy-associated enzyme Inpp5e controls this distribution, which is needed for trafficking of ciliary proteins, including Hedgehog signaling regulators Tulp3 and Gpr161. Disrupting phosphoinositide distribution impacts Hedgehog signaling, suggesting lipids are critical components of the cilia signaling environment. Highlights d The ciliary membrane contains different phosphoinositides than that of its base d The ciliopathy-associated protein Inpp5e generates the phosphoinositide distribution d Ciliary phosphoinositides are required for normal Hedgehog (Hh) signaling d Tulp3 senses phosphoinositides to limit ciliary Gpr161, an inhibitor of Hh signaling Garcia-Gonzalo et al., 2015, Developmental Cell 34, 400–409 August 24, 2015 ª2015 Elsevier Inc. http://dx.doi.org/10.1016/j.devcel.2015.08.001 Developmental Cell Article Phosphoinositides Regulate Ciliary Protein Trafficking to Modulate Hedgehog Signaling Francesc R. Garcia-Gonzalo,1,4 Siew Cheng Phua,2,4 Elle C. Roberson,1 Galo Garcia III,1 Monika Abedin,1 Ste´ phane Schurmans,3 Takanari Inoue,2,* and Jeremy F. Reiter1,* 1Department of Biochemistry and -
Photoreceptor Cilia and Retinal Ciliopathies
Downloaded from http://cshperspectives.cshlp.org/ on September 26, 2021 - Published by Cold Spring Harbor Laboratory Press Photoreceptor Cilia and Retinal Ciliopathies Kinga M. Bujakowska, Qin Liu, and Eric A. Pierce Ocular Genomics Institute, Massachusetts Eye and Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts 02114 Correspondence: [email protected] Photoreceptors are sensory neurons designed to convert light stimuli into neurological re- sponses. This process, called phototransduction, takes place in the outer segments (OS) of rod and cone photoreceptors. OS are specialized sensory cilia, with analogous structures to those present in other nonmotile cilia. Deficient morphogenesis and/or dysfunction of pho- toreceptor sensory cilia (PSC) caused by mutations in a variety of photoreceptor-specific and common cilia genes can lead to inherited retinal degenerations (IRDs). IRDs can manifest as isolated retinal diseases or syndromic diseases. In this review, we describe the structure and composition of PSC and different forms of ciliopathies with retinal involvement. We review the genetics of the IRDs, which are monogenic disorders but genetically diverse with regard to causality. hotoreceptors are sensory neurons designed morphogenesis and/or dysfunction of photore- Pto convert light stimuli into electrical re- ceptor sensory cilia (PSC) caused by mutations sponses, a process called phototransduction. in a variety of photoreceptor-specific and com- Phototransduction takes place in the highly spe- mon cilia genes can lead to a group of clinical cialized compartment of photoreceptors, the manifestations, called inherited retinal degener- outer segment (OS) (Pearring et al. 2013; Mol- ations (IRDs). In this review, we will discuss the day and Moritz 2015). -
Ciliary Genes in Renal Cystic Diseases
cells Review Ciliary Genes in Renal Cystic Diseases Anna Adamiok-Ostrowska * and Agnieszka Piekiełko-Witkowska * Department of Biochemistry and Molecular Biology, Centre of Postgraduate Medical Education, 01-813 Warsaw, Poland * Correspondence: [email protected] (A.A.-O.); [email protected] (A.P.-W.); Tel.: +48-22-569-3810 (A.P.-W.) Received: 3 March 2020; Accepted: 5 April 2020; Published: 8 April 2020 Abstract: Cilia are microtubule-based organelles, protruding from the apical cell surface and anchoring to the cytoskeleton. Primary (nonmotile) cilia of the kidney act as mechanosensors of nephron cells, responding to fluid movements by triggering signal transduction. The impaired functioning of primary cilia leads to formation of cysts which in turn contribute to development of diverse renal diseases, including kidney ciliopathies and renal cancer. Here, we review current knowledge on the role of ciliary genes in kidney ciliopathies and renal cell carcinoma (RCC). Special focus is given on the impact of mutations and altered expression of ciliary genes (e.g., encoding polycystins, nephrocystins, Bardet-Biedl syndrome (BBS) proteins, ALS1, Oral-facial-digital syndrome 1 (OFD1) and others) in polycystic kidney disease and nephronophthisis, as well as rare genetic disorders, including syndromes of Joubert, Meckel-Gruber, Bardet-Biedl, Senior-Loken, Alström, Orofaciodigital syndrome type I and cranioectodermal dysplasia. We also show that RCC and classic kidney ciliopathies share commonly disturbed genes affecting cilia function, including VHL (von Hippel-Lindau tumor suppressor), PKD1 (polycystin 1, transient receptor potential channel interacting) and PKD2 (polycystin 2, transient receptor potential cation channel). Finally, we discuss the significance of ciliary genes as diagnostic and prognostic markers, as well as therapeutic targets in ciliopathies and cancer. -
EGL Test Description
2460 Mountain Industrial Boulevard | Tucker, Georgia 30084 Phone: 470-378-2200 or 855-831-7447 | Fax: 470-378-2250 eglgenetics.com Ciliopathies: Deletion/Duplication Panel Test Code: DCIL1 Turnaround time: 2 weeks CPT Codes: 81406 x1, 81403 x1, 81405 x1 Condition Description The ciliopathies are a group of disorders caused by mutations in genes that encode proteins involved in the formation and function of cilia. Cilia are microtubule-based, hair-like cytoplasmic extensions that extend from the cell surface. The cilium is a highly conserved organelle that is structurally complex with approximately 1000 different recognized polypeptides. Cilia can be classified as either motile cilia or primary cilia (often called sensory cilia). Motile cilia, sometimes referred to as flagella, are typically found on epithelia cells that line the brain ventricles, oviducts, and respiratory tract. They can appear in bundles of 200-300 and can create movement of the extracellular fluid. Primary cilia are found on the surface of almost all cell types. They sense a wide variety of extracellular signals and transmit them to the interior of the cell. They are critical for developmental and physiological functions. Recent research suggests that motile cilia can be chemosensory as well. Cilia are a component of almost all cells, so defects in the cilia can lead to conditions that have features involving multiple organ systems, such as renal disease, cerebral anomalies, and retinal degeneration. Additional features include diabetes, skeletal dysplasia, obesity, and congenital fibrocystic diseases of the pancreas and liver; however, the specific phenotype depends on the specific cilia involved. Diseases tested by the panel include primary ciliary dyskinesia, nephronophthisis, Senior-Loken syndrome, Leber congenital amaurosis, Meckel- Gruber syndrome, Joubert and related syndromes, Bardet-Biedl syndrome, and many others.