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- W3157486987 abstract "The renal mesenchyme contains heterogeneous cells, including interstitial fibroblasts and pericytes, with key roles in wound healing. Although healing is impaired in aged kidneys, the effect of age and injury on the mesenchyme remains poorly understood. We characterized renal mesenchymal cell heterogeneity in young vs old animals and after ischemia-reperfusion-injury (IRI) using multiplex immunolabeling and single cell transcriptomics. Expression patterns of perivascular cell markers (α-SMA, CD146, NG2, PDGFR-α, and PDGFR-β) correlated with their interstitial location. PDGFR-α and PDGFR-β co-expression labeled renal myofibroblasts more efficiently than the current standard marker α-SMA, and CD146 was a superior murine renal pericyte marker. Three renal mesenchymal subtypes; pericytes, fibroblasts, and myofibroblasts, were recapitulated with data from two independently performed single cell transcriptomic analyzes of murine kidneys, the first dataset an aging cohort and the second dataset injured kidneys following IRI. Mesenchymal cells segregated into subtypes with distinct patterns of expression with aging and following injury. Baseline uninjured old kidneys resembled post-ischemic young kidneys, with this phenotype further exaggerated following IRI. These studies demonstrate that age modulates renal perivascular/interstitial cell marker expression and transcriptome at baseline and in response to injury and provide tools for the histological and transcriptomic analysis of renal mesenchymal cells, paving the way for more accurate classification of renal mesenchymal cell heterogeneity and identification of age-specific pathways and targets." @default.
- W3157486987 created "2021-05-10" @default.
- W3157486987 creator A5004096868 @default.
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- W3157486987 date "2021-05-05" @default.
- W3157486987 modified "2023-10-04" @default.
- W3157486987 title "Aging Modulates the Effects of Ischemic Injury Upon Mesenchymal Cells within the Renal Interstitium and Microvasculature" @default.
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