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      Production and characterization of human induced pluripotent stem cells (iPSC) CSSi007-A (4383) from Joubert Syndrome

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          Abstract

          Joubert syndrome (JS) is an autosomal recessive neurodevelopmental disorder, characterized by congenital cerebellar and brainstem defects, belonging to the group of disorders known as ciliopathies, which are caused by mutations in genes encoding proteins of the primary cilium and basal body. Human induced pluripotent stem cells (hiPSCs) from a patient carrying a homozygous missense mutation (c.2168G > A) in AHI1, the first gene to be associated with JS, were produced using a virus-free protocol.

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          AHI1 gene mutations cause specific forms of Joubert syndrome-related disorders.

          Joubert syndrome (JS) is a recessively inherited developmental brain disorder with several identified causative chromosomal loci. It is characterized by hypoplasia of the cerebellar vermis and a particular midbrain-hindbrain "molar tooth" sign, a finding shared by a group of Joubert syndrome-related disorders (JSRDs), with wide phenotypic variability. The frequency of mutations in the first positionally cloned gene, AHI1, is unknown. We searched for mutations in the AHI1 gene among a cohort of 137 families with JSRD and radiographically proven molar tooth sign. We identified 15 deleterious mutations in 10 families with pure JS or JS plus retinal and/or additional central nervous system abnormalities. Mutations among families with JSRD including kidney or liver involvement were not detected. Transheterozygous mutations were identified in the majority of those without history of consanguinity. Most mutations were truncating or splicing errors, with only one missense mutation in the highly conserved WD40 repeat domain that led to disease of similar severity. AHI1 mutations are a frequent cause of disease in patients with specific forms of JSRD.
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            Author and article information

            Contributors
            Journal
            Stem Cell Res
            Stem Cell Res
            Stem Cell Research
            Elsevier
            1873-5061
            1876-7753
            1 July 2019
            July 2019
            : 38
            : 101480
            Affiliations
            [a ]Fondazione IRCCS Casa Sollievo della Sofferenza, Cellular Reprogramming Unit, Viale dei Cappuccini, 71013 San Giovanni Rotondo, Foggia, Italy
            [b ]Neurogenetics Unit, IRCCS Santa Lucia Foundation, Rome 00143, Italy
            [c ]Fondazione IRCCS Casa Sollievo della Sofferenza, Medical Genetics Unit, Viale dei Cappuccini, 71013 San Giovanni Rotondo, Foggia, Italy
            [d ]Biotechnology and Bioscience Department, Bicocca University, Piazza della Scienza 2, 20126 Milan, Italy
            [e ]IRCCS Casa Sollievo della Sofferenza, Division of Internal Medicine and Chronobiology Unit, Viale dei Cappuccini, 71013 San Giovanni Rotondo, Foggia, Italy
            [f ]Department of Molecular Medicine, University of Pavia, via Forlanini 14, 27100 Pavia, Italy
            Author notes
            [* ]Corresponding author. j.rosati@ 123456css-mendel.it
            Article
            S1873-5061(19)30110-2 101480
            10.1016/j.scr.2019.101480
            6617992
            31202121
            4b811a7f-ab69-4164-b274-34b03c97f8c7
            © 2019 The Authors

            This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

            History
            : 26 February 2019
            : 21 May 2019
            : 1 June 2019
            Categories
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            Molecular medicine
            Molecular medicine

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