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Updated: Jun 20, 2026

Impedance-based Real-time Measurement of Cancer Cell Migration and Invasion
09:23

Impedance-based Real-time Measurement of Cancer Cell Migration and Invasion

Published on: April 2, 2020

ECRG2 regulates cell migration/invasion through urokinase-type plasmin activator receptor (uPAR)/beta1 integrin

Xiaolong Cheng1, Zheng Shen, Litian Yin

  • 1Department of Anatomy, Shanxi Medical University, Taiyuan, Shanxi 030001, China.

The Journal of Biological Chemistry
|September 1, 2009
PubMed

Insights

ECRG2 protein inhibits cancer cell migration by disrupting the uPA/uPAR/integrin pathway, impacting Src/MAP kinase signaling. This finding reveals ECRG2 as a potential therapeutic target for reducing cancer invasion.

Area of Science:

  • Molecular Biology
  • Cancer Research
  • Cell Signaling

Background:

  • ECRG2 (Endometrial Carcinoma Related Gene 2) is a KAZAL-type serine protease inhibitor.
  • Previous studies showed ECRG2 inhibits lung cancer cell migration and invasion.
  • The precise mechanism of ECRG2's action remained unclear.

Purpose of the Study:

  • To elucidate the molecular mechanism by which ECRG2 suppresses cancer cell migration and invasion.
  • To investigate the interaction of ECRG2 with the urokinase-type plasmin activator (uPA) system.

Main Methods:

  • Investigated ECRG2 binding to uPA.
  • Analyzed the formation of ECRG2-uPA-uPAR complexes.
  • Assessed the impact of these complexes on beta1 integrin association and Src/MAP kinase pathway activation.
  • Utilized in vitro Matrigel migration/invasion assays.
  • Examined cell migration in response to ECRG2 depletion in various cancer cell lines (HT1080, MDA-MB-231, MCF-7).

Main Results:

  • ECRG2 specifically binds to the kringle domain of uPA.
  • ECRG2 forms a complex with uPA and uPAR, altering uPAR dynamics with beta1 integrins.
  • This complex formation inhibits the Src/MAP kinase pathway, suppressing cell migration and invasion.
  • Depletion of ECRG2 enhanced uPAR-beta1 integrin association, increased Src/MAP kinase activation, and promoted cell migration/invasion.

Conclusions:

  • ECRG2 regulates cancer cell migration and invasion by modulating the uPA/uPAR/beta1 integrins/Src/MAP kinase pathway.
  • ECRG2's mechanism involves disrupting key signaling complexes essential for cell motility.
  • ECRG2 represents a promising novel therapeutic target for inhibiting cancer metastasis.

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