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Membrane Trafficking Decisions Regulate Primary Cilium Formation.

James R Goldenring1

  • 1Department of Surgery and Cell and Developmental Biology, Vanderbilt University Medical Center, 10435 Medical Research Building IV, 2213 Garland Avenue, Nashville, TN 37232, USA; Epithelial Biology Center, Vanderbilt University Medical Center, 10435 Medical Research Building IV, 2213 Garland Avenue, Nashville, TN 37232, USA.

Trends in Cell Biology
|June 22, 2019
PubMed
Summary
This summary is machine-generated.

Rab11 and its binding partners are vital for primary cilia assembly. WDR44, a Rab11 partner, was found to negatively regulate ciliary trafficking alongside Akt.

Keywords:
Rab11WDR44primary cilium

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Area of Science:

  • Cell biology
  • Molecular biology
  • Cilia biology

Background:

  • Rab11 and its interacting proteins are essential for primary cilia assembly in mammalian cells.
  • The precise mechanisms regulating ciliary protein trafficking are not fully understood.

Purpose of the Study:

  • To investigate the role of WDR44, a Rab11 binding protein, in primary cilia assembly.
  • To explore the function of WDR44 in regulating ciliary trafficking.

Main Methods:

  • Utilized mammalian cell culture models.
  • Investigated protein-protein interactions involving Rab11 and WDR44.
  • Assessed the impact of WDR44 on ciliary protein localization and trafficking.

Main Results:

  • Identified WDR44 as a novel regulator of primary cilia.
  • Demonstrated that WDR44 negatively regulates ciliary trafficking.
  • Showed that WDR44 functions in concert with Akt to control ciliary protein transport.

Conclusions:

  • WDR44 plays an unexplored role in negatively regulating ciliary trafficking.
  • The Rab11-WDR44-Akt pathway is a key modulator of primary cilia function.