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Auteur Mark J. DALY |
Documents disponibles écrits par cet auteur (2)
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Lack of association of rare functional variants in TSC1/TSC2 genes with autism spectrum disorder / Samira BAHL in Molecular Autism, (March 2013)
[article]
Titre : Lack of association of rare functional variants in TSC1/TSC2 genes with autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : Samira BAHL, Auteur ; Colby CHIANG, Auteur ; Roberta L. BEAUCHAMP, Auteur ; Benjamin NEALE, Auteur ; Mark J. DALY, Auteur ; James GUSELLA, Auteur ; Michael E. TALKOWSKI, Auteur ; Vijaya RAMESH, Auteur Année de publication : 2013 Article en page(s) : 11 p. Langues : Anglais (eng) Mots-clés : Autism spectrum disorder Tuberous sclerosis complex Mammalian target of rapamycin Next-generation sequencing Rare variants Index. décimale : PER Périodiques Résumé : BACKGROUND:Autism spectrum disorder (ASD) is reported in 30 to 60% of patients with tuberous sclerosis complex (TSC) but shared genetic mechanisms that exist between TSC-associated ASD and idiopathic ASD have yet to be determined. Through the small G-protein Rheb, the TSC proteins, hamartin and tuberin, negatively regulate mammalian target of rapamycin complex 1 (mTORC1) signaling. It is well established that mTORC1 plays a pivotal role in neuronal translation and connectivity, so dysregulation of mTORC1 signaling could be a common feature in many ASDs. Pam, an E3 ubiquitin ligase, binds to TSC proteins and regulates mTORC1 signaling in the CNS, and the FBXO45-Pam ubiquitin ligase complex plays an essential role in neurodevelopment by regulating synapse formation and growth. Since mounting evidence has established autism as a disorder of the synapses, we tested whether rare genetic variants in TSC1, TSC2, MYCBP2, RHEB and FBXO45, genes that regulate mTORC1 signaling and/or play a role in synapse development and function, contribute to the pathogenesis of idiopathic ASD.METHODS:Exons and splice junctions of TSC1, TSC2, MYCBP2, RHEB and FBXO45 were resequenced for 300 ASD trios from the Simons Simplex Collection (SSC) using a pooled PCR amplification and next-generation sequencing strategy, targeted to the discovery of deleterious coding variation. These detected, potentially functional, variants were confirmed by Sanger sequencing of the individual samples comprising the pools in which they were identified.RESULTS:We identified a total of 23 missense variants in MYCBP2, TSC1 and TSC2. These variants exhibited a near equal distribution between the proband and parental pools, with no statistical excess in ASD cases (P 0.05). All proband variants were inherited. No putative deleterious variants were confirmed in RHEB and FBXO45. Three intronic variants, identified as potential splice defects in MYCBP2 did not show aberrant splicing upon RNA assay. Overall, we did not find an over-representation of ASD causal variants in the genes studied to support them as contributors to autism susceptibility.CONCLUSIONS:We did not observe an enrichment of rare functional variants in TSC1 and TSC2 genes in our sample set of 300 trios. En ligne : http://dx.doi.org/10.1186/2040-2392-4-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=202
in Molecular Autism > (March 2013) . - 11 p.[article] Lack of association of rare functional variants in TSC1/TSC2 genes with autism spectrum disorder [Texte imprimé et/ou numérique] / Samira BAHL, Auteur ; Colby CHIANG, Auteur ; Roberta L. BEAUCHAMP, Auteur ; Benjamin NEALE, Auteur ; Mark J. DALY, Auteur ; James GUSELLA, Auteur ; Michael E. TALKOWSKI, Auteur ; Vijaya RAMESH, Auteur . - 2013 . - 11 p.
Langues : Anglais (eng)
in Molecular Autism > (March 2013) . - 11 p.
Mots-clés : Autism spectrum disorder Tuberous sclerosis complex Mammalian target of rapamycin Next-generation sequencing Rare variants Index. décimale : PER Périodiques Résumé : BACKGROUND:Autism spectrum disorder (ASD) is reported in 30 to 60% of patients with tuberous sclerosis complex (TSC) but shared genetic mechanisms that exist between TSC-associated ASD and idiopathic ASD have yet to be determined. Through the small G-protein Rheb, the TSC proteins, hamartin and tuberin, negatively regulate mammalian target of rapamycin complex 1 (mTORC1) signaling. It is well established that mTORC1 plays a pivotal role in neuronal translation and connectivity, so dysregulation of mTORC1 signaling could be a common feature in many ASDs. Pam, an E3 ubiquitin ligase, binds to TSC proteins and regulates mTORC1 signaling in the CNS, and the FBXO45-Pam ubiquitin ligase complex plays an essential role in neurodevelopment by regulating synapse formation and growth. Since mounting evidence has established autism as a disorder of the synapses, we tested whether rare genetic variants in TSC1, TSC2, MYCBP2, RHEB and FBXO45, genes that regulate mTORC1 signaling and/or play a role in synapse development and function, contribute to the pathogenesis of idiopathic ASD.METHODS:Exons and splice junctions of TSC1, TSC2, MYCBP2, RHEB and FBXO45 were resequenced for 300 ASD trios from the Simons Simplex Collection (SSC) using a pooled PCR amplification and next-generation sequencing strategy, targeted to the discovery of deleterious coding variation. These detected, potentially functional, variants were confirmed by Sanger sequencing of the individual samples comprising the pools in which they were identified.RESULTS:We identified a total of 23 missense variants in MYCBP2, TSC1 and TSC2. These variants exhibited a near equal distribution between the proband and parental pools, with no statistical excess in ASD cases (P 0.05). All proband variants were inherited. No putative deleterious variants were confirmed in RHEB and FBXO45. Three intronic variants, identified as potential splice defects in MYCBP2 did not show aberrant splicing upon RNA assay. Overall, we did not find an over-representation of ASD causal variants in the genes studied to support them as contributors to autism susceptibility.CONCLUSIONS:We did not observe an enrichment of rare functional variants in TSC1 and TSC2 genes in our sample set of 300 trios. En ligne : http://dx.doi.org/10.1186/2040-2392-4-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=202 Rare deleterious mutations of the gene EFR3A in autism spectrum disorders / Abha R. GUPTA in Molecular Autism, (April 2014)
[article]
Titre : Rare deleterious mutations of the gene EFR3A in autism spectrum disorders Type de document : Texte imprimé et/ou numérique Auteurs : Abha R. GUPTA, Auteur ; Michelle PIRRUCCELLO, Auteur ; Feng CHENG, Auteur ; Hyo Jung KANG, Auteur ; Thomas V. FERNANDEZ, Auteur ; Jeremy M. BASKIN, Auteur ; Murim CHOI, Auteur ; Li LIU, Auteur ; Adife Gulhan ERCAN-SENCICEK, Auteur ; John D. MURDOCH, Auteur ; Lambertus KLEI, Auteur ; Benjamin M. NEALE, Auteur ; Daniel FRANJIC, Auteur ; Mark J. DALY, Auteur ; Richard P. LIFTON, Auteur ; Pietro DE CAMILLI, Auteur ; Hongyu ZHAO, Auteur ; Nenad ŠESTAN, Auteur ; Matthew W. STATE, Auteur Article en page(s) : p.1-14 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Whole-exome sequencing studies in autism spectrum disorder (ASD) have identified de novo mutations in novel candidate genes, including the synaptic gene Eighty-five Requiring 3A (EFR3A). EFR3A is a critical component of a protein complex required for the synthesis of the phosphoinositide PtdIns4P, which has a variety of functions at the neural synapse. We hypothesized that deleterious mutations in EFR3A would be significantly associated with ASD. En ligne : http://dx.doi.org/10.1186/2040-2392-5-31 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=276
in Molecular Autism > (April 2014) . - p.1-14[article] Rare deleterious mutations of the gene EFR3A in autism spectrum disorders [Texte imprimé et/ou numérique] / Abha R. GUPTA, Auteur ; Michelle PIRRUCCELLO, Auteur ; Feng CHENG, Auteur ; Hyo Jung KANG, Auteur ; Thomas V. FERNANDEZ, Auteur ; Jeremy M. BASKIN, Auteur ; Murim CHOI, Auteur ; Li LIU, Auteur ; Adife Gulhan ERCAN-SENCICEK, Auteur ; John D. MURDOCH, Auteur ; Lambertus KLEI, Auteur ; Benjamin M. NEALE, Auteur ; Daniel FRANJIC, Auteur ; Mark J. DALY, Auteur ; Richard P. LIFTON, Auteur ; Pietro DE CAMILLI, Auteur ; Hongyu ZHAO, Auteur ; Nenad ŠESTAN, Auteur ; Matthew W. STATE, Auteur . - p.1-14.
Langues : Anglais (eng)
in Molecular Autism > (April 2014) . - p.1-14
Index. décimale : PER Périodiques Résumé : Whole-exome sequencing studies in autism spectrum disorder (ASD) have identified de novo mutations in novel candidate genes, including the synaptic gene Eighty-five Requiring 3A (EFR3A). EFR3A is a critical component of a protein complex required for the synthesis of the phosphoinositide PtdIns4P, which has a variety of functions at the neural synapse. We hypothesized that deleterious mutations in EFR3A would be significantly associated with ASD. En ligne : http://dx.doi.org/10.1186/2040-2392-5-31 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=276