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However, mechanisms that connect aging to multiorgan deterioration are poorly understood. In this study, we identify hepatocyte Hedgehog signaling as a central regulator of ferroptosis. Using mice with hepatocyte-specific deletion of Smoothened (Smo), a key Hedgehog pathway component, we show that loss of hepatocyte Hedgehog signaling induces ferroptotic stress, lipid peroxidation, and cellular senescence. These changes were sufficient to cause spontaneous MASLD and to trigger secondary kidney injury. Smo deletion also disrupted systemic iron balance, increased hepatocyte production of angiotensinogen, and reduced liver perfusion. Similar responses (iron dysregulation, vascular dysfunction, and reduced Hedgehog signaling) were observed in patients with MASLD and advanced fibrosis. Inhibition of ferroptosis with ferrostatin-1 reversed hepatocyte senescence, restored hepatic blood flow, and improved both liver and kidney injury in Smo-deficient mice. Overall, these findings show that hepatocyte Hedgehog signaling preserves liver homeostasis by restraining ferroptotic stress and coordinating iron-dependent vasoactive pathways. The results reveal an unrecognized aging-related communication axis between the liver and kidney and identify the Hedgehog\/ferroptosis pathway as a promising therapeutic target for age-associated metabolic diseases.<\/jats:p>","DOI":"10.1172\/jci.insight.207066","type":"journal-article","created":{"date-parts":[[2026,5,19]],"date-time":"2026-05-19T16:00:32Z","timestamp":1779206432000},"source":"Crossref","is-referenced-by-count":2,"title":["Hepatocyte hedgehog signaling controls ferroptosis to alleviate aging-related organ dysfunction"],"prefix":"10.1172","volume":"11","author":[{"given":"Ji Hye","family":"Jun","sequence":"first","affiliation":[{"name":"Division of Gastroenterology, Department of Medicine, Duke University, Durham, North Carolina, USA."},{"name":"Division of Life Science, College of Natural Sciences, Gyeongsang National University, Jinju, South Korea."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rajesh 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