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Disruption of the TFAP2A regulatory domain causes Branchio-Oculo-Facial Syndrome (BOFS) and illuminates pathomechanisms for other human neurocristopathies

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Gallus gallus Homo sapiens

PROVIDER: GSE108522 | GEO | 2018/11/01

REPOSITORIES: GEO

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Disruption of the TFAP2A regulatory domain causes Branchio-Oculo-Facial Syndrome (BOFS) and illuminates pathomechanisms for other human neurocristopathies [ChIP-seq]

Project description:BOFS is a rare congenital syndrome that arises due to defects during neural crest (NC) development and is thus considered as a human neurocristopathy. All reported BOFS cases are caused by heterozygous mutations within TFAP2A. Here we describe a unique BOFS patient carrying a de novo heterozygous inversion in which one of the breakpoints is located 40 kb downstream of TFAP2A. Using in vitro and in vivo NC developmental models, we uncovered that TFAP2A is located within a large Topologically Associating Domain (TAD) containing enhancers essential for TFAP2A expression in NC cells (NCC). Importantly, using patient-specific hiPSC lines, we showed that the inversion causes a loss of physical interactions between the inverted TFAP2A allele and its cognate enhancers, leading to TFAP2A monoallelic and haploinsufficient expression in human NCC. More generally, our results highlight potential etiological mechanisms for other human neurocristopathies and illustrate how TAD disruption can lead to a loss of enhancer gene-interactions and, consequently, to pathological changes in gene expression.

2018-11-01 | GSE108518 | GEO

Disruption of the TFAP2A regulatory domain causes Branchio-Oculo-Facial Syndrome (BOFS) and illuminates pathomechanisms for other human neurocristopathies [ATAC-seq]

2018-11-01 | GSE108517 | GEO

Disruption of the TFAP2A regulatory domain causes Branchio-Oculo-Facial Syndrome (BOFS) and illuminates pathomechanisms for other human neurocristopathies [scRNA-seq]

2018-11-01 | GSE121429 | GEO

Disruption of the TFAP2A regulatory domain causes Branchio-Oculo-Facial Syndrome (BOFS) and illuminates pathomechanisms for other human neurocristopathies [RNA-seq data set 1]

2018-11-01 | GSE108521 | GEO

Disruption of the TFAP2A regulatory domain causes Branchio-Oculo-Facial Syndrome (BOFS) and illuminates pathomechanisms for other human neurocristopathies [4C-seq data set 1]

2018-11-01 | GSE108515 | GEO

Disruption of the TFAP2A regulatory domain causes Branchio-Oculo-Facial Syndrome (BOFS) and illuminates pathomechanisms for other human neurocristopathies [RNA-seq data set 2]

2018-11-01 | GSE121428 | GEO

Disruption of the TFAP2A regulatory domain causes Branchio-Oculo-Facial Syndrome (BOFS) and illuminates pathomechanisms for other human neurocristopathies [4C-seq data set 2]

2018-11-01 | GSE121427 | GEO

TFAP2A mutations result in branchio-oculo-facial syndrome.

Project description:Branchio-oculo-facial syndrome (BOFS) is a rare autosomal-dominant cleft palate-craniofacial disorder with variable expressivity. The major features include cutaneous anomalies (cervical, infra- and/or supra-auricular defects, often with dermal thymus), ocular anomalies, characteristic facial appearance (malformed pinnae, oral clefts), and, less commonly, renal and ectodermal (dental and hair) anomalies. The molecular basis for this disorder is heretofore unknown. We detected a 3.2 Mb deletion by 500K SNP microarray in an affected mother and son with BOFS at chromosome 6p24.3. Candidate genes in this region were selected for sequencing on the basis of their expression patterns and involvement in developmental pathways associated with the clinical findings of BOFS. Four additional BOFS patients were found to have de novo missense mutations in the highly conserved exons 4 and 5 (basic region of the DNA binding domain) of the TFAP2A gene in the candidate deleted region. We conclude BOFS is caused by mutations involving TFAP2A. More patients need to be studied to determine possible genetic heterogeneity and to establish whether there are genotype-phenotype correlations.

| S-EPMC2427243 | biostudies-literature

Disruption of the TFAP2A regulatory domain causes Branchio-Oculo-Facial Syndrome (BOFS) and illuminates pathomechanisms for other human neurocristopathies

Project description:Disruption of the TFAP2A regulatory domain causes Branchio-Oculo-Facial Syndrome (BOFS) and illuminates pathomechanisms for other human neurocristopathies

| PRJNA427542 | ENA

Disruption of the TFAP2A regulatory domain causes Branchio-Oculo-Facial Syndrome (BOFS) and illuminates pathomechanisms for other human neurocristopathies [ATAC-seq]

Project description:Disruption of the TFAP2A regulatory domain causes Branchio-Oculo-Facial Syndrome (BOFS) and illuminates pathomechanisms for other human neurocristopathies [ATAC-seq]

| PRJNA427537 | ENA

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