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Updated: Jul 11, 2026

Assessment of Resistance to Tyrosine Kinase Inhibitors by an Interrogation of Signal Transduction Pathways by Antibody Arrays
07:42

Assessment of Resistance to Tyrosine Kinase Inhibitors by an Interrogation of Signal Transduction Pathways by Antibody Arrays

Published on: September 19, 2018

Tyk2 expression and its signaling enhances the invasiveness of prostate cancer cells

Hisamitsu Ide1, Takashi Nakagawa, Yuichi Terado

  • 1Department of Urology, Teikyo University School of Medicine, 2-11-1 Kaga, 2chome, Itabashi-ku, Tokyo 173-8605, Japan.

Biochemical and Biophysical Research Communications
|October 9, 2007
PubMed

Insights

Tyk2 (Tyrosine kinase 2) signaling promotes prostate cancer cell invasion, not growth. Inhibiting Tyk2 may offer a new therapeutic strategy for treating invasive prostate cancer.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Signaling

Background:

  • Protein tyrosine kinases are crucial for cell proliferation and differentiation.
  • Tyk2 (Tyrosine kinase 2), a Jak family kinase, mediates signal transduction for various growth factors and hormones.
  • Prostate cancer progression involves complex cellular signaling pathways.

Purpose of the Study:

  • To investigate Tyk2 expression in human prostate cancer cells.
  • To determine the role of Tyk2 signaling in prostate cancer cell growth and invasiveness.

Main Methods:

  • Detection of Jak family kinase mRNAs using RT-PCR in prostate cancer cell lines.
  • Immunohistochemistry to detect Tyk2 protein in human prostate cancer specimens.
  • Suppression of Tyk2 expression and signaling using small interfering RNA (siRNA) and the Tyk2 inhibitor tyrphostin A1.

Main Results:

  • Tyk2 protein and Jak family kinase mRNAs were detected in prostate cancer cells and tissues.
  • Inhibition of Tyk2 signaling significantly reduced urokinase-type plasminogen activator-enhanced prostate cancer cell invasiveness in vitro.
  • Cellular growth rates were not affected by Tyk2 inhibition.

Conclusions:

  • Tyk2 signaling plays a significant role in facilitating prostate cancer cell invasion.
  • Targeting Tyk2 signaling represents a potential therapeutic approach for managing invasive prostate cancer.

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