title: Truncation of Ube3a-ATS unsilences paternal Ube3a and ameliorates behavioral defects in the Angelman syndrome mouse model.
abstract: Angelman syndrome (AS) is a severe neurodevelopmental disorder caused by maternal deficiency of the imprinted gene UBE3A. Individuals with AS suffer from intellectual disability, speech impairment, and motor dysfunction. Currently there is no cure for the disease. Here, we evaluated the phenotypic effect of activating the silenced paternal allele of Ube3a by depleting its antisense RNA Ube3a-ATS in mice. Premature termination of Ube3a-ATS by poly(A) cassette insertion activates expression of Ube3a from the paternal chromosome, and ameliorates many disease-related symptoms in the AS mouse model, including motor coordination defects, cognitive deficit, and impaired long-term potentiation. Studies on the imprinting mechanism of Ube3a revealed a pattern of biallelic transcription initiation with suppressed elongation of paternal Ube3a, implicating transcriptional collision between sense and antisense polymerases. These studies demonstrate the feasibility and utility of unsilencing the paternal copy of Ube3a via targeting Ube3a-ATS as a treatment for Angelman syndrome.
authors.affiliation: Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, United States of America.
authors.forename: Linyan
authors.initials: L
authors.lastname: Meng
authors.affiliation: Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, United States of America.
authors.forename: Richard Erwin
authors.initials: RE
authors.lastname: Person
authors.affiliation: Department of Neuroscience, Baylor College of Medicine, Houston, Texas, United States of America.
authors.forename: Wei
authors.initials: W
authors.lastname: Huang
authors.affiliation: Department of Neuroscience, Baylor College of Medicine, Houston, Texas, United States of America.
authors.forename: Ping Jun
authors.initials: PJ
authors.lastname: Zhu
authors.affiliation: Department of Neuroscience, Baylor College of Medicine, Houston, Texas, United States of America.
authors.forename: Mauro
authors.initials: M
authors.lastname: Costa-Mattioli
authors.affiliation: Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, United States of America.
authors.forename: Arthur L
authors.initials: AL
authors.lastname: Beaudet
mesh_terms: D017204:Angelman Syndrome / Q000150:complications / Q000235:genetics* / Q000473:pathology; D000818:Animals; D004195:Disease Models, Animal; D020868:Gene Silencing; D018392:Genomic Imprinting; D006801:Humans; D008607:Intellectual Disability / Q000150:complications / Q000235:genetics / Q000473:pathology*; D051379:Mice; D058990:Molecular Targeted Therapy; D009474:Neurons / Q000378:metabolism; D016372:RNA, Antisense / Q000235:genetics; D013064:Speech Disorders / Q000150:complications / Q000235:genetics* / Q000473:pathology; D014158:Transcription, Genetic; D044767:Ubiquitin-Protein Ligases / Q000096:biosynthesis / Q000235:genetics* / Q000378:metabolism
chemical_list: D016372:RNA, Antisense; C502429:Ube3a protein, mouse; D044767:Ubiquitin-Protein Ligases