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Updated: May 27, 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

Dyrk1A Positively Stimulates ASK1-JNK Signaling Pathway during Apoptotic Cell Death

Hyoung Kyoung Choi1, Kwang Chul Chung

  • 1Department of Biology, College of Life Science and Biotechnology, Yonsei University, Seoul 120-749, Korea.

Experimental Neurobiology
|November 24, 2011
PubMed

Insights

Dual-specificity tyrosine (Y)-phosphorylation-regulated protein kinase 1A (Dyrk1A) activates during apoptosis. It enhances the JNK1 signaling pathway by interacting with apoptosis signal-regulating kinase 1 (ASK1), indicating a role in cell death regulation.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Neuroscience

Background:

  • Dual-specificity tyrosine (Y)-phosphorylation-regulated protein kinase 1A (Dyrk1A) is a mammalian protein kinase.
  • Dyrk1A is homologous to Drosophila melanogaster minibrain and its gene is located in the Down syndrome critical region of chromosome 21.
  • Dyrk1A phosphorylates transcription factors (NFAT, CREB) and cytosolic proteins (APP, tau, α-synuclein), and is implicated in cell growth and neurogenesis.

Purpose of the Study:

  • To investigate the role of Dyrk1A in cell death signaling pathways.
  • To elucidate the relationship between Dyrk1A activation and apoptosis.
  • To determine if Dyrk1A interacts with and regulates other key signaling molecules involved in cell death.

Main Methods:

  • Investigated Dyrk1A activation under conditions of apoptotic cell death.
  • Examined the interaction between Dyrk1A and apoptosis signal-regulating kinase 1 (ASK1).
  • Assessed the effect of Dyrk1A on JNK1 activation and ASK1-mediated signaling.

Main Results:

  • Dyrk1A is activated during apoptotic cell death.
  • Dyrk1A directly interacts with ASK1.
  • Dyrk1A positively regulates ASK1-mediated JNK1 signaling and appears to directly phosphorylate ASK1.

Conclusions:

  • Dyrk1A plays a significant role in regulating cell death.
  • Dyrk1A facilitates ASK1-mediated signaling events, thereby contributing to the apoptotic process.
  • These findings highlight Dyrk1A as a key regulator in the JNK1-signaling pathway during cell death.
Keywords:
ASK1Dyrk1AJNKcell deathsignal transduction

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