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Author

Park, Tae Joo
Developmental Morphogenesis Lab
Research Interests
  • Morphogenesis, chondrogenesis, ciliogenesis

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IFT46 plays crucial roles in craniofacial and cilia development

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Title
IFT46 plays crucial roles in craniofacial and cilia development
Author
Park, InjiLee, Hyun-KyungKim, ChowonIsmail, TayabaKim, Yoo-KyungPark, Jeen-WooKwon, Oh-SikKang, Beom-SikLee, Dong-SeokPark, Tae JooPark, Mae-JaChoi, Sun-CheolLee, Hyun-Shik
Keywords
Ciliogenesis; Craniofacial development; IFT46; Neurogenesis
Issue Date
201608
Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
Citation
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, v.477, no.3, pp.419 - 425
Abstract
The intraflagellar transport (IFT) system is essential for bidirectional movement of ciliary components from the basal body to the tip beneath the ciliary sheath and is conserved for cilia and flagella formation in most vertebrates. IFT complex A is involved in anterograde trafficking, whereas complex B is involved in retrograde trafficking. IFT46 is well known as a crucial component of IFT complex B, however, its developmental functions are poorly understood. In this study, we investigated the novel functions of IFT46 during vertebrate development, especially, ciliogenesis and neurogenesis, because IFT46 is strongly expressed in both multiciliated cells of epithelial and neural tissues. Knockdown of IFT46 using morpholino microinjections caused shortening of the body axis as well as the formation of fewer and shorter cilia. Furthermore, loss of IFT46 down-regulated the expression of the neural plate and neural tube markers, thus may influence Wnt/planar cell polarity and the sonic hedgehog signaling pathway during neurogenesis. In addition, loss of IFT46 caused craniofacial defects by interfering with cartilage formation. In conclusion, our results depict that IFT46 plays important roles in cilia as well as in neural and craniofacial development.
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DOI
http://dx.doi.org/10.1016/j.bbrc.2016.06.083
ISSN
0006-291X
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