Modelling ischaemic AKI in human kidney organoids reveals injury-associated epithelial states and macrophage-epithelial crosstalk.

Human kidney organoids subjected to hypoxia replicate key features of ischemic AKI, including segment-specific injury responses and persistent inflammation, with 48 hours of hypoxia inducing notable injury markers.

• Why it matters: Understanding ischemic AKI mechanisms is crucial for developing targeted therapies, but current models lack human relevance and controlled injury investigation, creating a significant knowledge gap.
• What they did: Researchers used iPSC-derived kidney organoids exposed to hypoxia followed by recovery, analyzing transcriptomic, proteomic, metabolomic, and single-cell profiles, and integrated macrophages to study injury and repair processes.
• The result: The study revealed sustained inflammatory signaling, incomplete recovery of proximal tubule markers, and activated macrophage states, establishing a human-relevant platform for investigating epithelial injury and immune crosstalk in AKI.