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Effects of aspirin on colon cancer using quantitative proteomic analysis

  • 0Central Laboratory, Beijing Luhe Hospital, Capital Medical University, Beijing 101149, China.
Cancer Pathogenesis and Therapy +

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April 11, 2024

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April 11, 2024

View abstract on PubMed

Summary

This summary is machine-generated.

Aspirin prevents colon cancer by inducing cell cycle arrest and apoptosis through the p53-CDK1 pathway. This study highlights aspirin as a potential preventative agent for colorectal cancer.

Area Of Science

  • Molecular Biology
  • Oncology
  • Proteomics

Background

  • Colon cancer is a leading global digestive cancer.
  • Epidemiological and clinical studies suggest aspirin's inhibitory effect on colon cancer development.
  • Understanding the precise molecular mechanisms of aspirin's preventive action is crucial.

Purpose Of The Study

  • To systematically elucidate the molecular mechanisms underlying aspirin's prevention of colon carcinogenesis.
  • To investigate the impact of aspirin on global protein expression in colorectal cancer cells.
  • To identify key molecular pathways affected by aspirin treatment.

Main Methods

  • Quantitative proteomic analysis to determine global protein expression profiles in colon cancer cells treated with aspirin.
  • Bioinformatic analysis of proteomic data, including differential protein expression, pathway analysis (KEGG), and protein-protein interaction networks.
  • Validation of key protein changes (p53, CDK1) using real-time PCR and Western blotting, alongside cell cycle and apoptosis assays (FACS).

Main Results

  • Aspirin significantly dysregulated 552 proteins in colon cancer cells, with 208 upregulated and 334 downregulated.
  • Proteomic and validation studies confirmed upregulation of p53 and downregulation of cyclin-dependent kinase 1 (CDK1) following aspirin exposure.
  • Aspirin treatment led to G1/S cell cycle arrest and induced apoptosis in HT29 colon cancer cells in a concentration-dependent manner.

Conclusions

  • Aspirin effectively induces G1 cell cycle arrest and apoptosis in colorectal cancer cells.
  • The p53-CDK1 pathway is identified as a key molecular mechanism mediating aspirin's anti-cancer effects.
  • Aspirin demonstrates significant potential as a chemopreventive agent for colon cancer.

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