NelfA (Whsc2) promoter occupancy is required for active gene transcription during cardiac hypertrophy

We examineD the genomic oppucpany and role of negative elongation factor A (NelfA) aka, Wolf-Hirschhorn syndrome candidate 2 (Whsc2), a critical component of the negative elongation complex in hearts undergoing pressure-overload induced cardiac hypertrophy. Alignment of high resolution genome wide occupancy data of NelfA, RNA Pol II, TFIIB and H3k9ac (datasets for pol II, TFIIB and H3kac submitted before) from control and hypertrophied hearts reveal that NelfA associates with all active gene promoters. High NelfA occupancy is seen at promoters of essential and cardiac-enriched genes, expressed under both quiescent and hypertrophic conditions. Conversely, de novo NelfA recruitment is observed at inducible gene promoters with pressure overload, accompanied by significant increase in expression of latter genes with hypertrophy. Overall design: Hearts were extracted from C57/Blk mice subjected to sham ot TAC operations. Hearts were sent to Active Motif, Inc for NelfA_ChIP-Seq