Journal
SCIENTIFIC REPORTS
Volume 11, Issue 1, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41598-021-92495-3
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Funding
- DFG [GO 449/14-1, BL285/14-1]
- DFG Cluster of Excellence REBIRTH
- Landesgraduiertenforderung Baden-Wurttemberg
- Deutsche Forschungsgemeinschaft (DFG) [WA3365/2-1, 390939984]
- Tistou & Charlotte Kerstan Stiftung
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The FOXJ1 target CFAP161 is evolutionarily conserved in Xenopus and mouse, where its expression correlates with motile cilia presence but mutations do not lead to typical cilia-related phenotypes. Genetic compensation and dysregulation of genes related to microtubules and cilia may buffer the impact of Cfap161 mutation.
Cilia are protrusions of the cell surface and composed of hundreds of proteins many of which are evolutionary and functionally well conserved. In cells assembling motile cilia the expression of numerous ciliary components is under the control of the transcription factor FOXJ1. Here, we analyse the evolutionary conserved FOXJ1 target CFAP161 in Xenopus and mouse. In both species Cfap161 expression correlates with the presence of motile cilia and depends on FOXJ1. Tagged CFAP161 localises to the basal bodies of multiciliated cells of the Xenopus larval epidermis, and in mice CFAP161 protein localises to the axoneme. Surprisingly, disruption of the Cfap161 gene in both species did not lead to motile cilia-related phenotypes, which contrasts with the conserved expression in cells carrying motile cilia and high sequence conservation. In mice mutation of Cfap161 stabilised the mutant mRNA making genetic compensation triggered by mRNA decay unlikely. However, genes related to microtubules and cilia, microtubule motor activity and inner dyneins were dysregulated, which might buffer the Cfap161 mutation.
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