Enhancer selection dictates gene expression responses in remote organs during tissue regeneration.
Fei SunJianhong OuAdam R ShoffnerYu LuanHongbo YangLingyun SongAlexias SafiYingxi CaoFeng YueGregory E CrawfordKenneth D PossPublished in: Nature cell biology (2022)
Acute trauma stimulates local repair mechanisms but can also impact structures distant from the injury, for example through the activity of circulating factors. To study the responses of remote tissues during tissue regeneration, we profiled transcriptomes of zebrafish brains after experimental cardiac damage. We found that the transcription factor gene cebpd was upregulated remotely in brain ependymal cells as well as kidney tubular cells, in addition to its local induction in epicardial cells. cebpd mutations altered both local and distant cardiac injury responses, altering the cycling of epicardial cells as well as exchange between distant fluid compartments. Genome-wide profiling and transgenesis identified a hormone-responsive enhancer near cebpd that exists in a permissive state, enabling rapid gene expression in heart, brain and kidney after cardiac injury. Deletion of this sequence selectively abolished cebpd induction in remote tissues and disrupted fluid regulation after injury, without affecting its local cardiac expression response. Our findings suggest a model to broaden gene function during regeneration in which enhancer regulatory elements define short- and long-range expression responses to injury.
Keyphrases
- gene expression
- induced apoptosis
- transcription factor
- genome wide
- cell cycle arrest
- stem cells
- dna methylation
- binding protein
- left ventricular
- lymph node
- oxidative stress
- poor prognosis
- white matter
- single cell
- drug induced
- liver failure
- extracorporeal membrane oxygenation
- blood brain barrier
- high intensity
- long non coding rna
- endothelial cells
- trauma patients
- mechanical ventilation