ZFIN ID: ZDB-PUB-130403-6
Rer1p maintains ciliary length and signaling by regulating γ-secretase activity and Foxj1a levels
Jurisch-Yaksi, N., Rose, A.J., Lu, H., Raemaekers, T., Munck, S., Baatsen, P., Baert, V., Vermeire, W., Scales, S.J., Verleyen, D., Vandepoel, R., Tylzanowski, P., Yaksi, E., de Ravel, T., Yost, H.J., Froyen, G., Arrington, C.B., and Annaert, W.
Date: 2013
Source: The Journal of cell biology   200(6): 709-720 (Journal)
Registered Authors: Yaksi, Emre, Yost, H. Joseph
Keywords: none
MeSH Terms:
  • Amyloid Precursor Protein Secretases/genetics
  • Amyloid Precursor Protein Secretases/metabolism*
  • Animals
  • Cell Line
  • Cilia/genetics
  • Cilia/metabolism
  • Forkhead Transcription Factors/biosynthesis*
  • Forkhead Transcription Factors/genetics
  • Gene Expression Regulation/physiology*
  • Humans
  • Membrane Glycoproteins/genetics
  • Membrane Glycoproteins/metabolism*
  • Receptors, Notch/genetics
  • Receptors, Notch/metabolism
  • Signal Transduction/physiology*
  • Swine
  • Zebrafish
PubMed: 23479743 Full text @ J. Cell Biol.

Cilia project from the surface of most vertebrate cells and are important for several physiological and developmental processes. Ciliary defects are linked to a variety of human diseases, named ciliopathies, underscoring the importance of understanding signaling pathways involved in cilia formation and maintenance. In this paper, we identified Rer1p as the first endoplasmic reticulum/cis-Golgi–localized membrane protein involved in ciliogenesis. Rer1p, a protein quality control receptor, was highly expressed in zebrafish ciliated organs and regulated ciliary structure and function. Both in zebrafish and mammalian cells, loss of Rer1p resulted in the shortening of cilium and impairment of its motile or sensory function, which was reflected by hearing, vision, and left–right asymmetry defects as well as decreased Hedgehog signaling. We further demonstrate that Rer1p depletion reduced ciliary length and function by increasing γ-secretase complex assembly and activity and, consequently, enhancing Notch signaling as well as reducing Foxj1a expression.