ArticlePhysiological reports2024
Osteopontin deletion attenuates cyst growth but exacerbates fibrosis in mice with cystic kidney disease.
Article in Physiological reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- A cross-model single-cell atlas reveals conserved involvement of osteopontin in polycystic kidney disease.JCI insight · 2026Article
- Spatial Transcriptomics Reveals Injured Cells, Signature Genes, and Communication Patterns in the Cyst Microenvironment of Polycystic Kidney Disease.Journal of the American Society of Nephrology : JASN · 2026Article
- Microvascular aberrations found in human polycystic kidneys are an early feature in a Pkd1 mutant mouse model.Disease models & mechanisms · 2025Article
- Osteopontin deletion attenuates cyst growth but exacerbates fibrosis in mice with cystic kidney disease.Physiological reports · 2024Article
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Authors and funding
10 authors.
Funding
Abstract
Osteopontin (OPN) is a multi-functional glycoprotein that coordinates the innate immune response, prevents nanocrystal formation in renal tubule fluid, and is a biomarker for kidney injury. OPN expression is markedly increased in cystic epithelial cells of polycystic kidney disease (PKD) kidneys; however, its role in PKD progression remains unclear. We investigated the in vitro effects of recombinant OPN on the proliferation of tubular epithelial cells from PKD and normal human kidneys and in vivo effects of OPN deletion on kidney cyst formation, fibrosis, and mineral metabolism in pcy/pcy mice, a non-orthologous model of autosomal-dominant PKD. In vitro studies revealed that OPN enhanced the proliferation of PKD cells but had no effect on normal kidney cells. Deletion of OPN in pcy/pcy mice significantly reduced kidney cyst burden; however, this was accompanied by increased fibrosis and no change in kidney function. The loss of OPN had no effect on kidney macrophage numbers, cyst epithelial cell proliferation, or apoptosis. Furthermore, there was no difference in kidney mineral deposition or mineral metabolism parameters between pcy/pcy mice with and without OPN expression. Global deletion of OPN reduced kidney cyst burden, while paradoxically exacerbating kidney fibrosis in mice with cystic kidney disease.
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