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Patients with PKD exhibit significant heterogeneity in disease progression, largely due to genetic and environmental modifiers. Like patients, mouse models of PKD also exhibit significant heterogeneity with regards to the gene mutated, age of disease onset, and rate of disease progression. To elucidate the cellular and molecular consequences of these variables, we constructed an integrated single-cell RNA sequencing (scRNA-seq) atlas across mouse models of PKD, mapping changes in cell type composition, gene expression, and intercellular signaling networks across the whole atlas and within individual models. Across models, scRNA-seq data revealed increased\n                    <jats:italic>Spp1<\/jats:italic>\n                    (osteopontin) expression and signaling from PKD-enriched clusters. Global deletion of\n                    <jats:italic>Spp1<\/jats:italic>\n                    in\n                    <jats:italic>Pkd1<\/jats:italic>\n                    <jats:sup>RC\/RC<\/jats:sup>\n                    mice resulted in a modest reduction in cyst severity and improved kidney function. From these studies, we created a freely available, searchable website (https:\/\/bmblx.bmi.osumc.edu\/scPKD\/) that can be used to identify cross- and intra-model changes in gene expression, guiding researchers to new therapeutic targets for treating PKD.\n                  <\/jats:p>","DOI":"10.1172\/jci.insight.207157","type":"journal-article","created":{"date-parts":[[2026,7,28]],"date-time":"2026-07-28T16:00:33Z","timestamp":1785254433000},"source":"Crossref","is-referenced-by-count":0,"title":["A cross-model single-cell atlas reveals conserved involvement of osteopontin in polycystic kidney disease"],"prefix":"10.1172","volume":"11","author":[{"given":"Sarah J.","family":"Miller","sequence":"first","affiliation":[{"name":"Department of Internal Medicine, Division of Nephrology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, 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