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Methods to Study Mrp4-containing Macromolecular Complexes in the Regulation of Fibroblast Migration
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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
Summary
This summary is machine-generated.

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.

Keywords:
JNK pathwayMtsPP2ACcell migrationpancreatic cancer

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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.