Facilitated DNA damage repair as an emerging therapeutic strategy for inflammatory and fibrotic diseases

Apr 1, 2026RSC chemical biology

Improving DNA Repair as a New Treatment Approach for Inflammation and Tissue Scarring

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Abstract

DNA damage from metabolic stress and oxidative injury is a common driver for chronic inflammatory and fibrotic diseases across multiple organs.

  • Sustained activation of pathways can lead to cellular aging, persistent inflammation, and excessive tissue formation.
  • Base excision repair processes in both the nucleus and mitochondria are increasingly recognized for their role in influencing inflammation and .
  • Unresolved DNA damage may contribute to chronic inflammation and fibrosis in tissues such as skin, liver, lung, and cardiovascular systems.
  • Factors such as chromatin structure, availability of NAD, and mitochondrial DNA stability are important in determining the response to DNA damage.
  • Emerging strategies to enhance DNA repair include targeting specific enzymes and pathways that regulate inflammation and fibrosis.

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Full Text

What this is

  • Chronic inflammatory and fibrotic diseases often stem from persistent DNA damage across various organs.
  • This review discusses the mechanisms by which unresolved DNA lesions lead to inflammation and .
  • It highlights the potential of enhancing DNA repair processes as a therapeutic strategy to combat these diseases.

Essence

  • Facilitating may serve as a promising therapeutic approach for chronic inflammatory and fibrotic diseases by addressing the underlying DNA damage that drives these conditions.

Key takeaways

  • DNA damage, particularly oxidative lesions like 8-oxoG, is a common trigger for chronic inflammation and across multiple organs. Persistent DNA lesions activate inflammatory pathways and promote cellular senescence, contributing to tissue remodeling.
  • Enhancing DNA repair mechanisms, especially base excision repair (BER), can mitigate inflammation and . Targeted therapies that boost the activity of DNA glycosylases and other repair enzymes show promise in preclinical models.
  • Mitochondrial DNA (mtDNA) damage plays a significant role in chronic inflammation. Repairing mtDNA can reduce inflammation and improve cellular function, making it a critical target for therapeutic intervention.

Caveats

  • The review focuses on preclinical findings, and further clinical validation is needed to confirm the efficacy of proposed therapeutic strategies for human diseases.
  • While enhancing DNA repair is promising, the complexities of DNA damage responses and their context-dependence may complicate treatment outcomes.

Definitions

  • DNA damage repair: The cellular processes that identify and correct DNA lesions to maintain genomic integrity and prevent disease.
  • Fibrosis: The excessive accumulation of extracellular matrix components leading to tissue scarring and loss of function.

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