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PDCD4 functions as a suppressor for pT2a and pT2b stage gastric cancer

Peng-Tao Guo1, Dong Yang, Zhe Sun

  • 1Department of Surgical Oncology, First Affiliated Hospital, China Medical University, Shenyang, Liaoning 110001, PR China.

Oncology Reports
|January 15, 2013
PubMed

Insights

Programmed cell death 4 (PDCD4) expression is reduced in gastric cancer, particularly in pT2b stage. Lower PDCD4 levels correlate with poorer prognosis, while its presence indicates a favorable outcome for gastric cancer patients.

Area of Science:

  • Oncology
  • Molecular Biology

Background:

  • Gastric cancer is a significant global health concern, contributing to high mortality rates.
  • Reduced expression of programmed cell death 4 (PDCD4) has been observed in gastric cancer, but its specific role in pT2 stage remains unclear.

Purpose of the Study:

  • To investigate the relationship between PDCD4 expression and clinicopathological features in patients with pT2 stage gastric cancer.
  • To evaluate PDCD4's prognostic value in pT2 stage gastric cancer.

Main Methods:

  • Analysis of 122 pT2 stage gastric cancer specimens, subclassified into pT2a and pT2b stages.
  • Quantification of PDCD4 mRNA and protein levels using real-time PCR and Western blot.
  • Assessment of PDCD4 protein expression via immunohistochemistry.

Main Results:

  • PDCD4 mRNA and protein levels were significantly lower in gastric cancer tissues compared to normal tissues.
  • PDCD4 mRNA and protein levels were further reduced in pT2b stage gastric cancer compared to pT2a stage.
  • Patients with PDCD4 expression exhibited a significantly higher cumulative survival rate.

Conclusions:

  • PDCD4 expression is diminished in pT2 stage gastric cancer, with lower levels in pT2b compared to pT2a.
  • PDCD4 expression serves as a favorable prognostic biomarker for gastric cancer outcomes.

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