Knockdown of apoptosis signal-regulating kinase 1 modulates basal glycogen synthase kinase-3β kinase activity and

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Updated: Jun 9, 2026

Identification of Intracellular Signaling Events Induced in Viable Cells by Interaction with Neighboring Cells Undergoing Apoptotic Cell Death
09:18

Identification of Intracellular Signaling Events Induced in Viable Cells by Interaction with Neighboring Cells Undergoing Apoptotic Cell Death

Published on: December 27, 2016

Kyung Tae Noh1, Ssang-Goo Cho, Eui-Ju Choi

  • 1Laboratories of Cell Death and Human Diseases, School of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea.

FEBS Letters
|August 31, 2010
PubMed

Insights

Apoptosis signal-regulating kinase 1 (ASK1) knockdown activates beta-catenin by inhibiting GSK-3beta, promoting breast cancer cell migration. This study reveals ASK1

Area of Science:

  • Molecular biology
  • Cancer research
  • Cell signaling

Background:

  • Glycogen synthase kinase 3 beta (GSK-3β) phosphorylates β-catenin, targeting it for degradation.
  • GSK-3β inhibition disrupts this complex, leading to increased cell migration.
  • The role of apoptosis signal-regulating kinase 1 (ASK1) in breast cancer metastasis is not fully understood.

Purpose of the Study:

  • To investigate the role of ASK1 in breast cancer cell migration.
  • To elucidate the molecular mechanisms linking ASK1, GSK-3β, and β-catenin signaling in breast cancer.

Main Methods:

  • Comparative analysis of ASK1 levels in metastatic versus non-metastatic breast cancer cell lines.
  • Knockdown of ASK1 in breast cancer cells.
  • Assessment of β-catenin activation, GSK-3β inhibition, and Axin dynamics.
  • Evaluation of cell migration assays.

Main Results:

  • ASK1 levels were significantly lower in metastatic breast cancer cells.
  • ASK1 knockdown led to GSK-3β inhibition and β-catenin activation.
  • ASK1 knockdown disrupted the Axin-GSK-3β-β-catenin complex, promoting cell migration.
  • The inhibition of the GSK-3β-β-catenin pathway by ASK1 knockdown modulated breast cancer cell migration.

Conclusions:

  • ASK1 plays a critical role in regulating breast cancer cell migration.
  • ASK1 functions by modulating the GSK-3β-β-catenin signaling pathway.
  • Targeting ASK1 may offer a therapeutic strategy for inhibiting breast cancer metastasis.

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