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Rho GTPase RhoJ is Associated with Gastric Cancer Progression and Metastasis

Chan Kim1, Hannah Yang2, Intae Park2

  • 11. Medical Oncology, CHA Bundang Medical Center, CHA University, Seongnam, Korea;; 2. Laboratory of Tumor Vasculature and Microenvironment, CHA University, Seongnam, Korea;

Journal of Cancer
|July 30, 2016
PubMed

Insights

RhoJ, a Rho GTPase, promotes gastric cancer (GC) progression and metastasis. High RhoJ expression indicates poor survival and increased cell motility, suggesting it as a negative prognostic factor for GC patients.

Area of Science:

  • Molecular Biology
  • Oncology
  • Cell Biology

Background:

  • Rho GTPases are crucial for tumor cell migration and invasion.
  • The role of Rho GTPases in gastric cancer (GC) pathogenesis is largely unknown.
  • RhoJ is an understudied member of the Rho GTPase family.

Purpose of the Study:

  • To investigate the clinical significance and functional role of RhoJ in gastric cancer.
  • To determine if RhoJ expression correlates with GC progression, metastasis, and patient survival.

Main Methods:

  • Analysis of RhoJ expression in GC cell lines and patient tumor samples.
  • In vitro gain-of-function studies to assess RhoJ's impact on GC cell phenotypes.
  • Correlation analysis between RhoJ expression and clinical parameters, including survival and recurrence.

Main Results:

  • RhoJ expression varied across GC cell lines and patient tissues.
  • High RhoJ expression was associated with diffuse type GC, advanced stages, and increased metastasis.
  • Elevated RhoJ levels significantly correlated with poorer overall and recurrence-free survival.
  • RhoJ overexpression enhanced GC cell motility (41.3%) and invasiveness (60.4%) without affecting proliferation.

Conclusions:

  • High RhoJ expression is an independent negative prognostic factor for gastric cancer survival.
  • RhoJ promotes GC progression and metastasis by increasing cell motility and invasiveness.
Keywords:
Rho GTPaseRhoJgastric cancermetastasis.progression

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