Related Experiment Video

Updated: Jan 11, 2026

Author Spotlight: Decoding RNA Methylation's Role in Pancreatic Cancer - A Single-Base Resolution Study
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Author Spotlight: Decoding RNA Methylation's Role in Pancreatic Cancer - A Single-Base Resolution Study

Published on: July 7, 2023

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DNA methylation-mediated ADA overexpression drives pancreatic cancer progression

Jingyi Zeng1, Juying Jiao1, Bo Lin1

  • 1The Third Department of Oncology, Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China.

Discover Oncology
|November 19, 2025
PubMed
Abstract

Insights

This study identifies adenosine deaminase (ADA) as a promising therapeutic target for pancreatic cancer (PC). DNA methylation at cg20622019 influences ADA expression and PC risk, suggesting a novel regulatory mechanism.

Area of Science:

  • Genetics
  • Oncology
  • Pharmacology

Background:

  • Pancreatic cancer (PC) presents aggressive characteristics, limited treatment options, and poor prognosis.
  • There is a critical need for novel therapeutic targets to improve pancreatic cancer treatment strategies.

Purpose of the Study:

  • To identify genetically supported, druggable genes associated with pancreatic cancer risk using a Mendelian randomization approach.
  • To investigate the role of DNA methylation in regulating the expression of candidate genes and their association with pancreatic cancer.

Main Methods:

  • A two-sample Mendelian randomization (MR) analysis was performed on genetically informed, druggable genes.
  • Candidate gene targets were validated using sensitivity, colocalization, and summary data-based MR (SMR) analyses.
  • DNA methylation mediation analysis was employed to explore upstream regulatory mechanisms.

Main Results:

  • Five druggable genes showed significant association with pancreatic cancer risk (FDR < 0.05).
  • Adenosine deaminase (ADA) was identified as a key gene potentially increasing pancreatic cancer risk.
  • DNA methylation at cg20622019 mediated approximately 36% of the association between ADA and pancreatic cancer, with higher methylation linked to lower ADA expression and reduced risk.

Conclusions:

  • Adenosine deaminase (ADA) is a prioritized, genetically supported druggable target for pancreatic cancer.
  • DNA methylation at the cg20622019 locus plays a significant regulatory role in pancreatic cancer development.
  • Colocalization analysis confirmed ADA as a validated target, while other screened genes did not meet validation criteria.
Keywords:
ADADNA methylationDruggable genesMediationMendelian randomizationPancreatic cancer

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