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- W4386326749 abstract "R-loops are non-canonical DNA structures that form during transcription and play diverse roles in various physiological processes. Disruption of R-loop homeostasis can lead to genomic instability and replication impairment, contributing to several human diseases, including cancer. Although the molecular mechanisms that protect cells against such events are not fully understood, recent research has identified the fork protection factors and the DNA damage response proteins as regulators of R-loop dynamics. Here, we identify the Werner helicase-interacting protein 1 (WRNIP1) as a novel factor that counteracts transcription-associated DNA damage upon replication perturbation. Loss of WRNIP1 leads to R-loop accumulation, resulting in collisions between the replisome and transcription machinery. We observe co-localization of WRNIP1 with transcription/replication complexes and R-loops after replication perturbation, suggesting its involvement in resolving transcription-replication conflicts. Moreover, WRNIP1-deficient cells show impaired replication restart from transcription-induced fork stalling. Notably, transcription inhibition and RNase H1 overexpression rescue all the defects caused by loss of WRNIP1. Importantly, our findings highlight the critical role of WRNIP1 ubiquitin-binding zinc finger (UBZ) domain in preventing pathological persistence of R-loops and limiting DNA damage, thereby safeguarding genome integrity." @default.
- W4386326749 created "2023-09-01" @default.
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- W4386326749 date "2023-08-31" @default.
- W4386326749 modified "2023-09-27" @default.
- W4386326749 title "WRNIP1 prevents transcription-associated genomic instability" @default.
- W4386326749 doi "https://doi.org/10.7554/elife.89981.1" @default.
- W4386326749 hasPublicationYear "2023" @default.
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