Longevity & AgingHow Kidney Disease Hijacks the Cell's Command Center
The endoplasmic reticulum (ER) acts as a cellular hub, coordinating calcium balance, lipid metabolism, and protein quality control across multiple organelles. This review in Nature Reviews Nephrology explains how the ER physically connects with mitochondria, the Golgi apparatus, endosomes, and the plasma membrane through membrane contact sites, enabling rapid ion and lipid exchange. When these communication channels break down, kidney diseases including diabetic kidney disease, acute kidney injury, and polycystic kidney disease can develop or worsen. Crucially, several already-approved or experimental drugs — including SGLT2 inhibitors, AMPK activators, mTOR inhibitors, and RAAS blockers — appear to restore ER-mitochondria communication and reduce kidney injury in laboratory models, suggesting new therapeutic angles for nephrology.
