Abstract:
:CHD7 mutations are implicated in a majority of cases of the congenital disorder, CHARGE syndrome. CHARGE, an autosomal dominant syndrome, is known to affect multiple tissues including eye, heart, ear, craniofacial nerves and skeleton and genital organs. Using a morpholino-antisense-oligonucleotide-based zebrafish model for CHARGE syndrome, we uncover a complex spectrum of abnormalities in the neural crest and the crest-derived cell types. We report for the first time, defects in myelinating Schwann cells, enteric neurons and pigment cells in a CHARGE model. We also observe defects in the specification of peripheral neurons and the craniofacial skeleton as previously reported. Chd7 morphants have impaired migration of neural crest cells and deregulation of sox10 expression from the early stages. Knocking down Sox10 in the zebrafish CHARGE model rescued the defects in Schwann cells and craniofacial cartilage. Our zebrafish CHARGE model thus reveals important regulatory roles for Chd7 at multiple points of neural crest development viz., migration, fate choice and differentiation and we suggest that sox10 deregulation is an important driver of the neural crest-derived aspects of Chd7 dependent CHARGE syndrome.
journal_name
Hum Mol Genetjournal_title
Human molecular geneticsauthors
Asad Z,Pandey A,Babu A,Sun Y,Shevade K,Kapoor S,Ullah I,Ranjan S,Scaria V,Bajpai R,Sachidanandan Cdoi
10.1093/hmg/ddw198subject
Has Abstractpub_date
2016-08-15 00:00:00pages
3539-3554issue
16eissn
0964-6906issn
1460-2083pii
ddw198journal_volume
25pub_type
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