The mitochondrial unfolded protein response and metabolic reprogramming promote PASMC proliferation in response to sphingosine kinase-1/sphingosine-1-phosphate signaling
Angelia D. Lockett, Aaron Snow, Pontian Adogamhe, Justin R. Sysol, Manas Yadav, Tendo Mubuuke, Marta Teixeira Gomes, Todd G. Cook, Amanda Jo Fisher, Micheala A. Aldred, Roberto F. Machado
This study shows that the Sphk1/S1P/S1P2 signaling axis promotes PASMC proliferation in PAH via activation of the mitochondrial unfolded protein response (UPRmt), which can be inhibited to reduce vascular remodeling.
bioRxiv · Jun 10, 2025 · PreprintCell Biology