Chromatin topology and distal elements underlie divergent cell-type-specific regulation of 9p21 locus cell cycle genes.
Divergent regulation of 9p21 cell cycle genes is driven by chromatin topology and distal elements, with p15 INK4B dominating across tissues and cell types.
- Why it matters: Understanding the complex regulation of the 9p21 locus is crucial because it encodes key cell cycle regulators linked to aging-related diseases, yet its mechanisms remain poorly understood.
- What they did: The study developed innovative single-cell tools to analyze 9p21 transcript expression and mapped cis-regulatory elements, revealing independent expression patterns of p14 ARF and p16 INK4A across tissues.
- The result: These findings elucidate the regulatory network controlling 9p21 genes, providing mechanistic insights and tools to advance research on this locus’s role in disease and aging.