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Updated: May 19, 2026

Methods to Study Mrp4-containing Macromolecular Complexes in the Regulation of Fibroblast Migration
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Methods to Study Mrp4-containing Macromolecular Complexes in the Regulation of Fibroblast Migration

Published on: May 19, 2016

Mts/PP2AC Induces Cell Migration via Rho1-Slpr-Mediated JNK Pathway

Wenshuo Zhang1, Junzhi Zhu1, Xiuke Ouyang2

  • 1Fang Zongxi Center for Marine EvoDevo, MoE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China.

FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology
|May 18, 2026
PubMed

Insights

Protein phosphatase 2A catalytic subunit (PP2AC) activates the JNK pathway to drive cancer cell migration. This pathway involves Rho1 and offers potential therapeutic targets for inhibiting cancer metastasis.

Area of Science:

  • Cell Biology
  • Molecular Oncology
  • Signal Transduction

Background:

  • Cell migration is critical for cancer progression and metastasis.
  • Protein phosphatase 2A catalytic subunit (PP2AC) is implicated in various cancers.
  • The precise role of PP2AC in cancer cell migration remains unclear.

Purpose of the Study:

  • To elucidate the role of PP2AC in regulating cancer cell migration.
  • To identify the molecular mechanisms by which PP2AC influences cell motility.
  • To explore PP2AC as a potential therapeutic target for cancer metastasis.

Main Methods:

  • Utilized Drosophila melanogaster as a model organism to study Mts (PP2AC ortholog).
  • Employed genetic epistasis analyses to determine signaling pathway interactions.
  • Performed affinity purification-mass spectrometry (AP-MS) to identify protein interactors.
  • Investigated PP2AC function in human pancreatic adenocarcinoma (PAAD) cells.

Main Results:

  • Mts activates the JNK pathway, promoting cell migration in Drosophila.
  • Mts acts upstream of Slpr in the JNK signaling cascade.
  • Rho1 was identified as a mediator downstream of Mts, increasing Rho1 protein levels to activate JNK.
  • PP2AC promotes migration in PAAD cells, correlating with RhoA levels and JNK activation.

Conclusions:

  • Mts/PP2AC acts as an upstream regulator of the Rho1-JNK signaling axis in cell migration.
  • This pathway provides a potential mechanism for controlling cancer cell motility.
  • The findings suggest novel therapeutic strategies targeting PP2AC for cancer metastasis.
Keywords:
JNK pathwayMtsPP2ACcell migrationpancreatic cancer

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