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Cell profiling of mouse acute kidney injury reveals conserved cellular responses to injury
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Cell profiling of mouse acute kidney injury reveals conserved cellular responses to injury
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Journal Article
Cell profiling of mouse acute kidney injury reveals conserved cellular responses to injury
2020
Overview
After acute kidney injury (AKI), patients either recover or alternatively develop fibrosis and chronic kidney disease. Interactions between injured epithelia, stroma, and inflammatory cells determine whether kidneys repair or undergo fibrosis, but the molecular events that drive these processes are poorly understood. Here, we use single nucleus RNA sequencing of a mouse model of AKI to characterize cell states during repair from acute injury. We identify a distinct proinflammatory and profibrotic proximal tubule cell state that fails to repair. Deconvolution of bulk RNA-seq datasets indicates that this failed-repair proximal tubule cell (FR-PTC) state can be detected in other models of kidney injury, increasing during aging in rat kidney and over time in human kidney allografts. We also describe dynamic intercellular communication networks and discern transcriptional pathways driving successful vs. failed repair. Our study provides a detailed description of cellular responses after injury and suggests that the FR-PTC state may represent a therapeutic target to improve repair.
Publisher
National Academy of Sciences
Subject
Acute Kidney Injury - genetics
/ Acute Kidney Injury - metabolism
/ Acute Kidney Injury - pathology
/ Aging
/ Animals
/ Fibrosis
/ Humans
/ Injuries
/ Kidney Tubules, Proximal - injuries
/ Kidney Tubules, Proximal - metabolism
/ Kidney Tubules, Proximal - pathology
/ Kidneys
/ Male
/ Mice
/ Rats
/ Repair
/ RNA
/ Stroma
