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Title: Whole exome sequencing coupled with unbiased functional analysis reveals new Hirschsprung disease genes.
Authors: Gui, Hongsheng
Schriemer, Duco
Cheng, William W
Chauhan, Rajendra K
Antiňolo, Guillermo
Berrios, Courtney
Bleda, Marta
Brooks, Alice S
Brouwer, Rutger W W
Burns, Alan J
Cherny, Stacey S
Dopazo, Joaquin
Eggen, Bart J L
Griseri, Paola
Jalloh, Binta
Le, Thuy-Linh
Lui, Vincent C H
Luzón-Toro, Berta
Matera, Ivana
Ngan, Elly S W
Pelet, Anna
Ruiz-Ferrer, Macarena
Sham, Pak C
Shepherd, Iain T
So, Man-Ting
Sribudiani, Yunia
Tang, Clara S M
van den Hout, Mirjam C G N
van der Linde, Herma C
van Ham, Tjakko J
van IJcken, Wilfred F J
Verheij, Joke B G M
Amiel, Jeanne
Borrego, Salud
Ceccherini, Isabella
Chakravarti, Aravinda
Lyonnet, Stanislas
Tam, Paul K H
Garcia-Barceló, Maria-Mercè
Hofstra, Robert M W
Keywords: De novo mutations;ENS;Hirschsprung disease;Neural crest
metadata.dc.subject.mesh: Alleles
Case-Control Studies
Computational Biology
DNA Mutational Analysis
Disease Models, Animal
Gene Knockout Techniques
Genetic Predisposition to Disease
Genome-Wide Association Study
High-Throughput Nucleotide Sequencing
Hirschsprung Disease
Issue Date: 8-Mar-2017
Abstract: Hirschsprung disease (HSCR), which is congenital obstruction of the bowel, results from a failure of enteric nervous system (ENS) progenitors to migrate, proliferate, differentiate, or survive within the distal intestine. Previous studies that have searched for genes underlying HSCR have focused on ENS-related pathways and genes not fitting the current knowledge have thus often been ignored. We identify and validate novel HSCR genes using whole exome sequencing (WES), burden tests, in silico prediction, unbiased in vivo analyses of the mutated genes in zebrafish, and expression analyses in zebrafish, mouse, and human. We performed de novo mutation (DNM) screening on 24 HSCR trios. We identify 28 DNMs in 21 different genes. Eight of the DNMs we identified occur in RET, the main HSCR gene, and the remaining 20 DNMs reside in genes not reported in the ENS. Knockdown of all 12 genes with missense or loss-of-function DNMs showed that the orthologs of four genes (DENND3, NCLN, NUP98, and TBATA) are indispensable for ENS development in zebrafish, and these results were confirmed by CRISPR knockout. These genes are also expressed in human and mouse gut and/or ENS progenitors. Importantly, the encoded proteins are linked to neuronal processes shared by the central nervous system and the ENS. Our data open new fields of investigation into HSCR pathology and provide novel insights into the development of the ENS. Moreover, the study demonstrates that functional analyses of genes carrying DNMs are warranted to delineate the full genetic architecture of rare complex diseases.
metadata.dc.identifier.doi: 10.1186/s13059-017-1174-6
Appears in Collections:Producción 2020

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