Haploinsufficiency of the Sin3/HDAC corepressor complex member SIN3B causes a syndromic intellectual disability/autism spectrum disorder

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Autores de IIS La Fe

Participantes ajenos a IIS La Fe

  • Latypova, Xenia
  • Vincent, Marie
  • Molle, Alice
  • Adebambo, Oluwadamilare A.
  • Fourgeux, Cynthia
  • Khan, Tahir N.
  • Caro, Alfonso
  • Niyazov, Dmitriy
  • Lederer, Damien
  • Deprez, Marie
  • Capri, Yline
  • Kannu, Peter
  • Tabet, Anne Claude
  • Levy, Jonathan
  • Aten, Emmelien
  • den Hollander, Nicolette
  • Splitt, Miranda
  • Walia, Jagdeep
  • Immken, Ladonna L.
  • Stankiewicz, Pawel
  • McWalter, Kirsty
  • Suchy, Sharon
  • Louie, Raymond J.
  • Bell, Shannon
  • Stevenson, Roger E.
  • Rousseau, Justine
  • Willem, Catherine
  • Retiere, Christelle
  • Yang, Xiang-Jiao
  • Campeau, Philippe M.
  • Rosenfeld, Jill A.
  • Le Caignec, Cedric
  • Kury, Sebastien
  • Mercier, Sandra
  • Moradkhani, Kamran
  • Conrad, Solene
  • Besnard, Thomas
  • Cogne, Benjamin
  • Katsanis, Nicholas
  • Bezieau, Stephane
  • Poschmann, Jeremie
  • Davis, Erica E.
  • Isidor, Bertrand

Grupos

Abstract

Proteins involved in transcriptional regulation harbor a demonstrated enrichment of mutations in neurodevelopmental disorders. The Sin3 (Swi-independent 3)/histone deacetylase (HDAC) complex plays a central role in histone deacetylation and transcriptional repression. Among the two vertebrate paralogs encoding the Sin3 complex, SIN3A variants cause syndromic intellectual disability, but the clinical consequences of SIN3B haploinsufficiency in humans are uncharacterized. Here, we describe a syndrome hallmarked by intellectual disability, developmental delay, and dysmorphic facial features with variably penetrant autism spectrum disorder, congenital malformations, corpus callosum defects, and impaired growth caused by disruptive SIN3B variants. Using chromosomal microarray or exome sequencing, and through international data sharing efforts, we identified nine individuals with heterozygous SIN3B deletion or single-nucleotide variants. Five individuals harbor heterozygous deletions encompassing SIN3B that reside within a ~230 kb minimal region of overlap on 19p13.11, two individuals have a rare nonsynonymous substitution, and two individuals have a single-nucleotide deletion that results in a frameshift and predicted premature termination codon. To test the relevance of SIN3B impairment to measurable aspects of the human phenotype, we disrupted the orthologous zebrafish locus by genome editing and transient suppression. The mutant and morphant larvae display altered craniofacial patterning, commissural axon defects, and reduced body length supportive of an essential role for Sin3 function in growth and patterning of anterior structures. To investigate further the molecular consequences of SIN3B variants, we quantified genome-wide enhancer and promoter activity states by using H3K27ac ChIP-seq. We show that, similar to SIN3A mutations, SIN3B disruption causes hyperacetylation of a subset of enhancers and promoters in peripheral blood mononuclear cells. Together, these data demonstrate that SIN3B haploinsufficiency leads to a hitherto unknown intellectual disability/autism syndrome, uncover a crucial role of SIN3B in the central nervous system, and define the epigenetic landscape associated with Sin3 complex impairment.

Datos de la publicación

ISSN/ISSNe:
0002-9297, 1537-6605

AMERICAN JOURNAL OF HUMAN GENETICS  CELL PRESS

Tipo:
Article
Páginas:
929-941
Factor de Impacto:
5,042 SCImago
Cuartil:
Q1 SCImago

Citas Recibidas en Web of Science: 5

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Keywords

  • HDAC, SIN3A, SINB, acetylation, autism, epigenetics, intellectual disability, mutation, transcription, zebrafish

Proyectos asociados

RED DE BIOBANCOS (BIOBANCOS)

RD09/0076/00021 . INSTITUTO DE SALUD CARLOS III; FUNDACIÓN PARA LA INVESTIGACIÓN DEL HOSPITAL UNIVERSITARIO LA FE DE LA COMUNIDAD VALENCIANA . 2010

COMPREHENSIVE, INTEGRATIVE AND GENOMIC APPROACH TO THE UNDERSTANDING AND TREATMENT OF CANCER AND LEUKEMIA.

Investigador Principal: MIGUEL ÁNGEL SANZ ALONSO

PIE13/00046 . INSTITUTO DE SALUD CARLOS III; FUNDACIÓN PARA LA INVESTIGACIÓN DEL HOSPITAL UNIVERSITARIO LA FE DE LA COMUNIDAD VALENCIANA . 2014

LA RUTA DE LA OXITOCINA EN LOS TRASTORNOS DEL ESPECTRO AUTISTA: IMPORTANCIA DE LAS VARIANTES GENÉTICAS CON RELEVANCIA FUNCIONAL.

Investigador Principal: CARMEN ORELLANA ALONSO

2014_0056_CRC_ORELLANA . 2014

ABORDAJE GENÓMICO PARA LA IDENTIFICACIÓN DE NUEVOS GENES Y MÓDULOS FUNCIONALES RESPONSABLES DE DISCAPACIDAD INTELECTUAL GRAVE.

Investigador Principal: FRANCISCO MARTÍNEZ CASTELLANO

PI14/00350 . INSTITUTO DE SALUD CARLOS III . 2015

NUEVA APROXIMACIÓN GENÓMICA PARA EL DIAGNÓSTICO DE AUTISMO Y DISCAPACIDAD INTELECTUAL: IMPORTANCIA DE LAS MUTACIONES ADQUIRIDAS EN MOSAICISMO SOMÁTICO Y DE NUEVOS GENES CANDIDATOS.

Investigador Principal: SANDRA MONFORT MEMBRADO

2018_0170_CRC_MUTUA MADRILEÑA_MONFORT . FUNDACION MUTUA MADRILEÑA . 2018

Contrato Post FSE (Rio Hortega).

Investigador Principal: FRANCISCO MARTÍNEZ CASTELLANO

CM19/00181 . INSTITUTO DE SALUD CARLOS III . 2020

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