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The Cell Cycle Control System01:28

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The cell cycle regulation directs how a cell proceeds from one phase to the next and begins mitosis. The cell cycle control system includes intracellular regulatory molecules and external triggers. They provide "stop" or "advance" signals and operate at specific cell cycle stages termed checkpoints to ensure that a particular process is completed before the cell advances to the next phase.
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Studying Cell Cycle-regulated Gene Expression by Two Complementary Cell Synchronization Protocols
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WWP2 is required for normal cell cycle progression.

Byeong Hyeok Choi1, Xun Che1, Changyan Chen2

  • 1Department of Environmental Medicine, New York University Langone Medical Center, Tuxedo Park, NY, USA.

Genes & Cancer
|December 2, 2015
PubMed
Summary
This summary is machine-generated.

WWP2, a ubiquitin E3 ligase, is essential for normal cell cycle progression and proliferation. Its silencing impacts cyclin turnover and Akt signaling, highlighting its role in cell cycle control.

Keywords:
AktCell CycleCyclinMitosisUbiquitin E3 ligaseWWP2

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Area of Science:

  • Molecular Biology
  • Cell Biology
  • Biochemistry

Background:

  • WWP2 is a Nedd4-like family ubiquitin E3 ligase.
  • WWP2 targets proteins like PTEN, involved in cell proliferation and tumor suppression.

Purpose of the Study:

  • To investigate the role of WWP2 in regulating cell cycle progression.
  • To determine WWP2's involvement in the Akt signaling pathway.

Main Methods:

  • Cell proliferation assays.
  • Western blotting to analyze protein levels (cyclin E, p-H3, cyclin B, phospho-Akt).
  • Gene silencing techniques to inhibit WWP2 expression.

Main Results:

  • WWP2 silencing significantly reduced cell proliferation rates.
  • WWP2-V4 isoform expression is high during M phase.
  • Silencing WWP2 accelerated cyclin E turnover, increasing p-H3 and cyclin B levels.
  • WWP2 inhibition compromised Akt(S473) phosphorylation.

Conclusions:

  • WWP2 is crucial for normal cell cycle progression.
  • WWP2 plays a significant role in regulating the Akt signaling cascade.
  • WWP2 is an important regulator of cell proliferation and cell cycle control.