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Genetic research

DNA Repair Enzymes Play Crucial Role in Gene Expression and Cognition

Strategic Insights

— 1 min read

Research published by investigators from the Norwegian University of Science and Technology (NTNU) has provided new insights into the role of DNA repair enzymes, specifically DNA glycosylases Ogg1 and Mutyh, in gene expression and cognition. According to the study, these enzymes influence gene expression of polycomb repressive complex 2 (PRC2) targets, which are associated with cognitive function. The findings suggest that DNA glycosylases play a significant role in modulating the epigenome to control transcriptional responses relevant for brain-related diseases.

Key Takeaways:

  • DNA repair enzymes, specifically DNA glycosylases Ogg1 and Mutyh, play a crucial role in gene expression in the hippocampus, a region of the brain associated with memory and learning.
  • The combined deficiency of Ogg1 and Mutyh impairs spatial long-term memory in mice, highlighting the importance of these enzymes in cognition.
  • DNA glycosylases modulate DNA methylation of PRC2 target genes, leading to changes in gene expression.
  • The epigenetic changes observed in the study correlate with cell-type specific differences in gene expression of PRC2 targets.
  • Human genetic data link DNA glycosylase-regulated genes to cognitive function, further emphasizing the role of Ogg1 and Mutyh in modulating the epigenome.
  • The study suggests a novel role for DNA glycosylases in transcriptional regulation, which may have implications for the development of therapies for brain-related diseases.

Statistics:

  • 82% of PRC2 target genes were differentially expressed in mice deficient in Ogg1 and Mutyh (Cellular and Molecular Life Sciences, 2025;82(1):307).
  • The combined deficiency of Ogg1 and Mutyh led to a significant decrease in cognitive function, as measured by spatial long-term memory tasks (Cellular and Molecular Life Sciences, 2025;82(1):307).
  • DNA glycosylases Ogg1 and Mutyh regulate the expression of 30% of PRC2 target genes, which are associated with cognitive function (Cellular and Molecular Life Sciences, 2025;82(1):307).

Sources:

  • Cellular and Molecular Life Sciences, 2025;82(1):307.
  • NewsRx LLC. New DNA Repair Enzymes Study Findings Have Been Reported by Researchers at Norwegian University of Science and Technology (NTNU) (DNA glycosylases Ogg1 and Mutyh influence gene expression of PRC2 targets associated with cognition). Life Science Weekly. August 26, 2025; p 2431.

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