The molecular pathways regulating the cardioprotective activity of deacetylase sirtuin-1 are unknown. Here, Yanget al. show that histone H3K9 methyltransferase SUV39H and HP1gamma cooperatively methylate H3K9 on the sirtuin-1 promoter and inhibit sirtuin-1 transcription, and show that inhibition of SUV39H in mice is cardioprotective.
- Guang Yang
- Xinyu Weng
- Aijun Sun