The role of 8-oxoguanine DNA glycosylase-1 in inflammation

Xueqing Ba, Leopoldo Aguilera-Aguirre, Qura Tul Ain Nmi Rashid, Attila Bacsi, Zsolt Radak, Sanjiv Sur, Koa Hosoki, Muralidhar L. Hegde, Istvan Boldogh

Research output: Contribution to journalArticle

47 Scopus citations

Abstract

Many, if not all, environmental pollutants/chemicals and infectious agents increase intracellular levels of reactive oxygen species (ROS) at the site of exposure. ROS not only function as intracellular signaling entities, but also induce damage to cellular molecules including DNA. Among the several dozen ROS-induced DNA base lesions generated in the genome, 8-oxo-7,8-dihydroguanine (8-oxoG) is one of the most abundant because of guanine's lowest redox potential among DNA bases. In mammalian cells, 8-oxoG is repaired by the 8-oxoguanine DNA glycosylase-1 (OGG1)-initiated DNA base excision repair pathway (OGG1–BER). Accumulation of 8-oxoG in DNA has traditionally been associated with mutagenesis, as well as various human diseases and aging processes, while the free 8-oxoG base in body fluids is one of the best biomarkers of ongoing pathophysiological processes. In this review, we discuss the biological significance of the 8-oxoG base and particularly the role of OGG1–BER in the activation of small GTPases and changes in gene expression, including those that regulate pro-inflammatory chemokines/cytokines and cause inflammation.

Original languageEnglish (US)
Pages (from-to)16975-16997
Number of pages23
JournalInternational Journal of Molecular Sciences
Volume15
Issue number9
DOIs
StatePublished - Sep 23 2014

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Keywords

  • 8-oxoG base
  • DNA base excision repair
  • Inflammation
  • OGG1
  • Small GTPases

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Spectroscopy
  • Inorganic Chemistry
  • Catalysis
  • Molecular Biology
  • Computer Science Applications

Cite this

Ba, X., Aguilera-Aguirre, L., Rashid, Q. T. A. N., Bacsi, A., Radak, Z., Sur, S., Hosoki, K., Hegde, M. L., & Boldogh, I. (2014). The role of 8-oxoguanine DNA glycosylase-1 in inflammation. International Journal of Molecular Sciences, 15(9), 16975-16997. https://doi.org/10.3390/ijms150916975