ArticleNature communications2025
DNA lesions can frequently precede DNA:RNA hybrid accumulation.
Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- FANCA-dependent FEN1 recruitment suppresses transcription-replication conflicts and PARPi sensitivity.Molecular cell · 2026Article
- Molecular determinants of Smc5/6 association with DNA junctions.Nature communications · 2026Article
- Transcriptional PBR cycles at pericentromeric repeats cause gross chromosomal rearrangements through Rad52-dependent ADR-loop formation.Nucleic acids research · 2026Article
- Protein-mediated stabilization and nicking of the nontemplate DNA strand dramatically affect R-loop formation in vitro.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
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Authors and funding
17 authors.
Funding
Abstract
While DNA:RNA hybrids contribute to multiple genomic transactions, their unscheduled formation is a recognized source of DNA lesions. Here, through a suite of systematic screens, we rather observed that a wide range of yeast mutant situations primarily triggering DNA damage actually leads to hybrid accumulation. Focusing on Okazaki fragment processing, we establish that genic hybrids can actually form as a consequence of replication-born discontinuities such as unprocessed flaps or unligated Okazaki fragments. Strikingly, such "post-lesion" DNA:RNA hybrids neither detectably contribute to genetic instability, nor disturb gene expression, as opposed to "pre-lesion" hybrids formed upon defective mRNA biogenesis, e.g., in THO complex mutants. Post-lesion hybrids similarly arise in distinct genomic instability situations, triggered by pharmacological or genetic manipulation of DNA-dependent processes, both in yeast and human cells. Altogether, our data establish that the accumulation of transcription-born DNA:RNA hybrids can occur as a consequence of various types of natural or pathological DNA lesions, yet do not necessarily aggravate their genotoxicity.
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