Consequently, dysfunctional ATP13A2 sensitizes cells to oxidative stress, which impairs mitochondria, and induces toxicity and cell death
Consequently, dysfunctional ATP13A2 sensitizes cells to oxidative stress, which impairs mitochondria, and induces toxicity and cell death. death. ATP13A2-mediated polyamine transport represents a conserved pathway that protects against mitochondrial oxidative stress. The combined protective impact of ATP13A2 on lysosomal health and mitochondrial oxidative stress may explain why ATP13A2 exerts potent neuroprotective effects. (strain deficient in the ATP13A2 ortholog ortholog of ATF4, causing hypersensitivity to rotenone, which was reversible with MitoTEMPO. Together, our study reveals a conserved cell protective pathway that counters mitochondrial oxidative stress via ATP13A2-mediated lysosomal spermine export. Loss-of-function mutations in (that lysosomal polyamine export by ATP13A2 effectively lowers ROS levels and promotes mitochondrial health and functionality, pointing to a lysosomal-dependent cell protective pathway that may be implicated in ATP13A2-related neurodegenerative disorders. Results ATP13A2 Protects Cells and Mitochondria against…