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NELF prevents widespread transcriptional readthrough into DNA replication zones of cancer cells [ATAC-seq]

GSE253011 Homo sapiens Genome binding/occupancy profiling by high throughput sequencing 6 samples Submitted 2025/12/13 Platform GPL24676
Summary
Regulation of RNA polymerase II (Pol II) transcription is closely associated with cell proliferation. However, it remains unclear how the Pol II transcription program is rewired in cancer to promote uncontrolled growth. Here, we find that gene expression of NELFCD, a known negative elongation factor, is up-regulated in colorectal tumours. To dissect the direct role of NELF-C on Pol II transcription in such cancer, we employed an auxin-dependent protein degradation system for NELF-C in combination with nascent transcript sequencing technologies. Strikingly, we demonstrate that the acute loss of NELF-C protein globally redistributes termination factors and perturbs Pol II transcription termination. These changes drive pervasive Pol II transcription into DNA replication zones leading to transcription-replication conflict that may block the cell cycle in G1 or early S phase. Our findings reveal a previously unrecognised role of NELF in transcription termination and highlight NELF as a potential therapeutic target in colorectal cancer.
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Also filed as BioProject PRJNA1063649 and SRA study SRP483321. Searching any of these in the dataset finder brings you back here.

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