Blockage of transcription by the gradual accumulation of DNA damage is a major driver of human neurodegeneration and aging. DNA damage obstructs elongating RNA polymerase II directly, leading to the initiation of transcription-coupled DNA repair to remove the DNA damage. DNA damage also indirectly causes genome-wide transcription shutdown, which is especially relevant when DNA damage persists, such as during cancer therapy and aging. Our lab specializes in transcription-coupled and other nucleotide excision repair–related DNA repair mechanisms (
https://lanslab.eu/publications/). This project builds on our previous findings that persistent DNA repair intermediates interfere with transcription and are more detrimental than DNA damage itself, which can be found in e.g. Muniesa-Vargas et al,
Nature Comm, 2024; van der Woude,
bioRxiv, 2025; van Sluis et al,
Nature Rev MCB, 2025).
The precise proteins and mechanisms that control transcriptional integrity upon persisting DNA damage are poorly understood. In this project, we will use forward genetic screens in the model organism
C. elegans to identify new mediators of this transcription stress response. These new mediators will subsequently be functionally characterized using genetic and cell biological analysis, in combination with advanced DNA repair, live cell imaging and proteomics approaches, in both
C. elegans and human cells. This research is expected to provide new insight into how DNA damage-induced transcription stress contributes to aging, neurodegeneration, and chemotherapy-related toxicity.