In C. elegans, a p38 MAPK–ATF-7 pathway upregulates hypodermal CATP-3 during potassium scarcity, integrating neuronal signals to maintain homeostasis, enhance survival, and link potassium regulation to lifespan and immunity. This conserved mechanism is distinct from osmotic stress responses.
- Rong Huang
- Fangchao Hu
- Ziyun Wu