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Genome-Wide Analysis of DNA Methylation in Gastrointestinal Cancer
07:50

Genome-Wide Analysis of DNA Methylation in Gastrointestinal Cancer

Published on: September 18, 2020

Upregulation of human DNA binding protein A (dbpA) in gastric cancer cells

Guo-rong Wang1, Yan Zheng, Xiang-ming Che

  • 1Department of General Surgery, First Affiliated Hospital of Medical College of Xi'an Jiaotong University, Xi'an 710061, China.

Acta Pharmacologica Sinica
|September 15, 2009
PubMed
Abstract

Insights

Human DNA binding protein (dbpA) is upregulated in gastric cancer, promoting cell invasion and tumorigenesis. Silencing dbpA inhibits cancer cell growth and enhances sensitivity to 5-fluorouracil, suggesting a new therapeutic strategy.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Research

Background:

  • Gastric cancer is a significant global health concern.
  • The role of specific proteins in gastric cancer pathogenesis requires further elucidation.

Purpose of the Study:

  • To investigate the effect of human DNA binding protein (dbpA) on gastric cancer cell biology.
  • To explore the potential of targeting dbpA for gastric cancer therapy.

Main Methods:

  • Analyzed dbpA expression in gastric cancer tissues and cell lines using Western blot and immunofluorescence.
  • Utilized small interfering RNA (siRNA) to silence dbpA expression and assessed its effects on cell invasion, colony formation, and drug sensitivity (5-fluorouracil) via Transwell, colony formation, and MTT assays.
  • Examined the impact of dbpA silencing on key molecular markers including E-cadherin, APC, beta-catenin, cyclin D1, and NF-kappaB using real-time RT-PCR.

Main Results:

  • DbpA expression was significantly upregulated in gastric cancer tissues and cell lines compared to normal controls.
  • siRNA-mediated silencing of dbpA suppressed gastric cancer cell invasion and colony formation in vitro.
  • Silencing dbpA modulated the expression of E-cadherin, APC, beta-catenin, and cyclin D1, and notably enhanced chemosensitivity to 5-fluorouracil.

Conclusions:

  • DbpA plays a crucial role in gastric cancer pathogenesis and development, influencing key cellular pathways.
  • Targeting dbpA through silencing presents a promising therapeutic strategy to enhance chemosensitivity in gastric cancer treatment.

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