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0The research article identifies a specialized population of DPP4+ hepatocytes located in the liver's mid-lobular zone 2 that serves as a primary engine for organ regeneration. These cells act as a mechanical hotspot, using the mechanosensitive ion channel PIEZO1 to detect physical changes like cellular hypertrophy and tissue tension following injury. Once activated by these mechanical cues, PIEZO1 triggers a signaling pathway involving calcium influx and the transcription factor NFATC3 to increase IGFBP2 expression. This process effectively translates physical stress into a proliferative program that restores lost liver mass. The study demonstrates that deleting PIEZO1 severely impairs recovery, while enhancing its function accelerates healing, revealing a vital link between tissue mechanics and biological repair. These findings suggest that the PIEZO1-IGFBP2 axis could be a promising therapeutic target for treating chronic liver disease and improving surgical outcomes.
References:
Zhang Y, Sun Y, Xu G, et al. Zonated mechanosensing by PIEZO1 controls liver regeneration[J]. Science, 2026, 393(6806): eaef0825.
