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- W2592367605 abstract "Ciliopathies are a class of diseases caused by the loss of a ubiquitous, microtubule-based organelle called a primary cilium. Ciliopathies commonly result in defective development of the craniofacial complex, causing midfacial defects, craniosynostosis, micrognathia and aglossia. Herein, we explored how the conditional loss of primary cilia on neural crest cells (Kif3af/f;Wnt1-Cre) generated aglossia. On a cellular level, our data revealed that aglossia in Kif3af/f;Wnt1-Cre embryos was due to a loss of mesoderm-derived muscle precursors migrating into and surviving in the tongue anlage. To determine the molecular basis for this phenotype, we performed RNA-seq, in situ hybridization, qPCR and Western blot analyses. We found that transduction of the Sonic hedgehog (Shh) pathway, rather than other pathways previously implicated in tongue development, was aberrant in Kif3af/f;Wnt1-Cre embryos. Despite increased production of full-length GLI2 and GLI3 isoforms, previously identified GLI targets important for mandibular and glossal development (Foxf1, Foxf2, Foxd1 and Foxd2) were transcriptionally downregulated in Kif3af/f;Wnt1-Cre embryos. Genetic removal of GLI activator (GLIA) isoforms in neural crest cells recapitulated the aglossia phenotype and downregulated Fox gene expression. Genetic addition of GLIA isoforms in neural crest cells partially rescued the aglossia phenotype and Fox gene expression in Kif3af/f;Wnt1-Cre embryos. Together, our data suggested that glossal development requires primary cilia-dependent GLIA activity in neural crest cells. Furthermore, these data, in conjunction with our previous work, suggested prominence specific roles for GLI isoforms; with development of the frontonasal prominence relying heavily on the repressor isoform and the development of the mandibular prominence/tongue relying heavily on the activator isoform." @default.
- W2592367605 created "2017-03-16" @default.
- W2592367605 creator A5007194881 @default.
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- W2592367605 creator A5030008310 @default.
- W2592367605 creator A5035408607 @default.
- W2592367605 creator A5087925282 @default.
- W2592367605 date "2017-04-01" @default.
- W2592367605 modified "2023-10-08" @default.
- W2592367605 title "Cilia-dependent GLI processing in neural crest cells is required for tongue development" @default.
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- W2592367605 doi "https://doi.org/10.1016/j.ydbio.2017.02.021" @default.
- W2592367605 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5420199" @default.
- W2592367605 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/28286175" @default.
- W2592367605 hasPublicationYear "2017" @default.
- W2592367605 type Work @default.