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Repression of PES1 expression inhibits growth of gastric cancer

Jieping Li1, Xiaodong Zhou2, Xiaopeng Lan3

  • 1Department of Clinic Medical Laboratory, General Hospital of Fujian Corps of CAPF, Fuzhou, 350003, China. liejieping@hotmail.com.

Tumour Biology : the Journal of the International Society for Oncodevelopmental Biology and Medicine
|October 2, 2015
PubMed

Insights

The oncogene PES1 drives gastric cancer growth by promoting cell proliferation and angiogenesis. Inhibiting PES1 suppressed tumor growth and may offer a new therapeutic target for gastric cancer.

Area of Science:

  • Oncology
  • Molecular Biology

Background:

  • Gastric cancer is a leading cause of cancer mortality globally, with unclear molecular drivers.
  • The oncogene PES1 has been implicated in breast and ovarian cancer development.

Purpose of the Study:

  • To investigate the role of PES1 in gastric cancer development and progression.
  • To explore PES1 as a potential therapeutic target for gastric cancer.

Main Methods:

  • Investigated PES1 function in gastric cancer cell lines (AGS, N87) using gene silencing and re-expression.
  • Analyzed cell proliferation, cell cycle, and gene expression (cyclin D1, HIF-1α, VEGF, p21WAF1).
  • Evaluated PES1's effect on tumor growth in vivo using a nude mouse model and assessed PES1 expression in patient tissues via immunohistochemistry.

Main Results:

  • Ablation of PES1 significantly suppressed gastric cancer cell proliferation, induced cell cycle arrest (G2/G1), and altered expression of key regulatory genes.
  • PES1 knockdown decreased cyclin D1, HIF-1α, and VEGF, while increasing p21WAF1 expression.
  • Repression of PES1 inhibited gastric tumor growth in vivo, and PES1 was overexpressed in gastric cancer tissues compared to adjacent normal tissues.

Conclusions:

  • PES1 plays a significant role in gastric cancer development by influencing cell proliferation and angiogenesis.
  • PES1 overexpression in gastric tumors suggests its potential as a diagnostic marker and therapeutic target for gastric cancer.
Keywords:
Gastric cancerPES1

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