1. Early embryogenesis in CHDFIDD mouse model reveals facial clefts and altered cranial neurogenesis.
- Author
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Hampl M, Jandová N, Lusková D, Nováková M, Szotkowská T, Čada Š, Procházka J, Kohoutek J, and Buchtová M
- Subjects
- Animals, Cyclin-Dependent Kinases metabolism, Cyclin-Dependent Kinases genetics, Skull embryology, Skull pathology, Mice, Cleft Palate genetics, Cleft Palate pathology, Cleft Palate embryology, Cleft Lip genetics, Cleft Lip pathology, Cleft Lip embryology, Trigeminal Nerve embryology, Embryo, Mammalian metabolism, Face embryology, Face abnormalities, Phenotype, Intellectual Disability genetics, Mutation genetics, Doublecortin Protein, Neurogenesis genetics, Disease Models, Animal, Embryonic Development genetics, Gene Expression Regulation, Developmental
- Abstract
CDK13-related disorder, also known as congenital heart defects, dysmorphic facial features and intellectual developmental disorder (CHDFIDD) is associated with mutations in the CDK13 gene encoding transcription-regulating cyclin-dependent kinase 13 (CDK13). Here, we focused on the development of craniofacial structures and analyzed early embryonic stages in CHDFIDD mouse models, with one model comprising a hypomorphic mutation in Cdk13 and exhibiting cleft lip/palate, and another model comprising knockout of Cdk13, featuring a stronger phenotype including midfacial cleft. Cdk13 was found to be physiologically expressed at high levels in the mouse embryonic craniofacial structures, namely in the forebrain, nasal epithelium and maxillary mesenchyme. We also uncovered that Cdk13 deficiency leads to development of hypoplastic branches of the trigeminal nerve including the maxillary branch. Additionally, we detected significant changes in the expression levels of genes involved in neurogenesis (Ache, Dcx, Mef2c, Neurog1, Ntn1, Pou4f1) within the developing palatal shelves. These results, together with changes in the expression pattern of other key face-specific genes (Fgf8, Foxd1, Msx1, Meis2 and Shh) at early stages in Cdk13 mutant embryos, demonstrate a key role of CDK13 in the regulation of craniofacial morphogenesis., Competing Interests: Competing interests The authors declare no competing or financial interests., (© 2024. Published by The Company of Biologists Ltd.)
- Published
- 2024
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