Absence of correlation between serum CRP levels and mitochondrial D-loop DNA mutations in gastro-oesophageal adenocarcinoma

Tan, Benjamin H L; Skipworth, Richard J E; Wheelhouse, Nicholas M; Fearon, Kenneth C H; Ross, James A

Abstract

INTRODUCTION: Both inflammation and mitochondrial DNA (mtDNA) mutation are thought to play a role in the many human cancers. The aim of this study was to evaluate the relationship between inflammation and accumulation of mitochondrial DNA (mtDNA) mutations in the D-loop region in carcinogenesis of gastro-oesophageal adenocarcinomas. MATERIALS AND METHODS: Blood samples of 20 patients with gastro-oesophageal adenocarcinoma were taken for measurement of serum C-reactive protein (CRP) concentration. Direct sequencing of mtDNA in the D-loop region was done in the 20 adenocarcinoma samples and their corresponding surrounding non-cancerous tissue. Sequences were compared with existing mtDNA databases to identify mutations. RESULTS: mtDNA mutations in the D-loop region occur commonly with almost identical frequency in both non-cancerous tissue (3.0 +/- 1.6) and adenocarcinoma (3.1 +/- 1.9) (P = 0.916, paired t-test). CRP levels are not predictive of the number of D-loop mutations in both adenocarcinoma (beta: -0.131; 95% CI: -2.354-1.364; P = 0.583) and non-cancerous tissue samples (beta: 0.130; 95% CI: -1.125-1.933; P = 0.586). Five new mutations were identified that were not recorded previously in mtDNA databases. CONCLUSION: D-loop mtDNA mutations are common in both gastro-oesophageal adenocarcinoma and surrounding non-cancerous tissue. However, the accumulation of such mutations appears to occur independent of systemic inflammation. The frequency of D-loop mutations is likely not useful as a marker for carcinogenesis in gastro-oesophageal adenocarcinoma.

Citation

Tan, B. H. L., Skipworth, R. J. E., Wheelhouse, N. M., Fearon, K. C. H., & Ross, J. A. (2014). Absence of correlation between serum CRP levels and mitochondrial D-loop DNA mutations in gastro-oesophageal adenocarcinoma. Journal of Cancer Research and Therapeutics, 10(1), 176-179. https://doi.org/10.4103/0973-1482.131458

• Journal Article Type: Article
• Acceptance Date: Apr 23, 2014
• Publication Date: 2014-03
• Deposit Date: Jul 21, 2016
• Journal: Journal of Cancer Research and Therapeutics
• Print ISSN: 0973-1482
• Electronic ISSN: 1998-4138
• Publisher: Medknow Publications
• Peer Reviewed: Peer Reviewed
• Volume: 10
• Issue: 1
• Pages: 176-179
• DOI: https://doi.org/10.4103/0973-1482.131458
• Keywords: D-loop, gastro-oesophageal adenocarcinoma, inflammation, mitochondrial DNA mutations, serum CRP
• Public URL: http://researchrepository.napier.ac.uk/Output/304741
• Related Public URLs: http://www.cancerjournal.net/article.asp?issn=0973-1482;year=2014;volume=10;issue=1;spage=176;epage=179;aulast=Tan