New research in mice shows that age-related loss of ER-mitochondrial contacts reduces mitochondrial PE synthesis, impairing autophagosome formation and causing giant dysfunctional mitochondria to accumulate. Boosting PISD activity via LACTB inhibition may restore mitochondrial quality control.
Three things to remember
- Aged cardiomyocytes show reduced ER-mitochondria contacts, impairing PS transport and PE synthesis.
- PE deficiency disrupts autophagosome membrane formation, blocking autophagic flux and causing giant mitochondria.
- Inhibiting LACTB enhances PISD activity, restoring PE production and mitochondrial homeostasis in aging hearts.
Source
This signal is based on Age-associated reduction in ER-Mitochondrial contacts impairs mitochondrial lipid metabolism and autophagosome formation in the heart. from PubMed. Read the original report for full context.
Health note: Mouse and cellular models may not fully replicate human cardiac aging; LACTB inhibition is not yet a validated therapy.