The abstract is read at the publisher; the summary is JClub's.
Prime editing with 6-bp barcodes enabled end-to-end assembly of all 18 NORs in K562, resolving rDNA copy number per NOR (range 5–43; total 290).
- Why it matters: NORs remain incompletely resolved in telomere-to-telomere human reference genomes, limiting accurate counts and structure of rDNA units that organize nucleoli and ribosome biogenesis.
- What they did: The authors inserted degenerate 6-bp DNA barcodes into 99% of taggable rDNA units in a clonal K562 derivative, then used ultra-long-read sequencing to assemble NORs and read the same tags from RNA.
- The result: The assemblies defined intragenomic rDNA architecture and variation, and linked DNA methylation to Pol I transcription at individual rDNA-unit resolution, informing how cancer evolution and passaging may shape rDNA.
The findingWhy it mattersWhat they didThe result
AI summary of the abstract · may contain errors · not medical advice · read the paper.