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The localization of amyloid precursor protein to ependymal cilia in vertebrates and its role in ciliogenesis and brain development in zebrafish
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The localization of amyloid precursor protein to ependymal cilia in vertebrates and its role in ciliogenesis and brain development in zebrafish
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The localization of amyloid precursor protein to ependymal cilia in vertebrates and its role in ciliogenesis and brain development in zebrafish
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Journal Article
The localization of amyloid precursor protein to ependymal cilia in vertebrates and its role in ciliogenesis and brain development in zebrafish
2021
Overview
Amyloid precursor protein (APP) is expressed in many tissues in human, mice and in zebrafish. In zebrafish, there are two orthologues, Appa and Appb. Interestingly, some cellular processes associated with APP overlap with cilia-mediated functions. Whereas the localization of APP to primary cilia of in vitro-cultured cells has been reported, we addressed the presence of APP in motile and in non-motile sensory cilia and its potential implication for ciliogenesis using zebrafish, mouse, and human samples. We report that Appa and Appb are expressed by ciliated cells and become localized at the membrane of cilia in the olfactory epithelium, otic vesicle and in the brain ventricles of zebrafish embryos. App in ependymal cilia persisted in adult zebrafish and was also detected in mouse and human brain. Finally, we found morphologically abnormal ependymal cilia and smaller brain ventricles in
appa
−/−
appb
−/−
mutant zebrafish. Our findings demonstrate an evolutionary conserved localisation of APP to cilia and suggest a role of App in ciliogenesis and cilia-related functions.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 631/378
/ Amyloid beta-Protein Precursor - analysis
/ Amyloid beta-Protein Precursor - metabolism
/ Amyloidogenic Proteins - analysis
/ Amyloidogenic Proteins - genetics
/ Amyloidogenic Proteins - metabolism
/ Animals
/ Animals, Genetically Modified
/ app
/ cells
/ Cerebral Ventricles - cytology
/ Cerebral Ventricles - metabolism
/ Cilia
/ Embryos
/ gene
/ Humanities and Social Sciences
/ Humans
/ Mice
/ Mutation
/ Olfactory Mucosa - metabolism
/ promotes
/ Science
/ Science & Technology - Other Topics
/ system
/ Zebrafish Proteins - analysis
