Abstract
Elevated interferon (IFN) signaling is associated with kidney diseases including COVID-19, HIV, and apolipoprotein-L1 (APOL1) nephropathy, but whether IFNs directly contribute to nephrotoxicity remains unclear. Using human kidney organoids, primary endothelial cells, and patient samples, we demonstrate that IFN-γ induces pyroptotic angiopathy in combination with APOL1 expression. Single-cell RNA sequencing, immunoblotting, and quantitative fluorescence-based assays reveal that IFN-γ-mediated expression of APOL1 is accompanied by pyroptotic endothelial network degradation in organoids. Pharmacological blockade of IFN-γ signaling inhibits APOL1 expression, prevents upregulation of pyroptosis-associated genes, and rescues vascular networks. Multiomic analyses in patients with COVID-19, proteinuric kidney disease, and collapsing glomerulopathy similarly demonstrate increased IFN signaling and pyroptosis-associated gene expression correlating with accelerated renal disease progression. Our results reveal that IFN-γ signaling simultaneously induces endothelial injury and primes renal cells for pyroptosis, suggesting a combinatorial mechanism for APOL1-mediated collapsing glomerulopathy, which can be targeted therapeutically.
Original language | English (US) |
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Article number | 114310 |
Journal | Cell reports |
Volume | 43 |
Issue number | 6 |
DOIs | |
State | Published - Jun 25 2024 |
Funding
We thank Byungha Chung and Rebecca Hjorten for preliminary studies on APOL1 immunolocalization and Abhijit S. Naik for helpful discussions. Illustrations were created with BioRender.com. Studies were supported by NIH awards R01DK130386 (B.S.F. K.D.S. and S.A.), R01DK117914 (B.S.F.), UH3TR000504 (J.H.), UH3TR002158 (J.H.), UH3TR03288 (J.H. and M.K.), U01DK127553 (B.S.F.), U01AI176460 (B.S.F.), R01HL167688 (H.F.), R35GM149516 (H.F.), and 5UC2DK126006 (Stuart Shankland and B.S.F.); Department of Defense awards W81XWH-21-1-0006 and W81XWH-21-1-0007 (B.S.F. and Hannele Ruohola-Baker); DOD Kidney Cancer Research Program Translational Research Partnership Award KC180135 (S.A. and Scott S. Tykodi); and NASA contract #80ARC023CA001. B.S.F. and B.A.J. conceived the project with input from K.D.S. Y.Z. J.L.H. M.K. and J.H. B.A.J. H.F. J.L.H. J.L. Y.Z. and B.S.F. designed the experiments. B.A.J. I.B.S. F.S. H.F. J.E.S. J.L.H. S.E. K.D.S. S.A. E.L. P.K.B. J.Y. Y.Z. and B.S.F. performed the experiments and analyzed the data. B.A.J. and B.S.F. wrote the paper with input from all authors. B.S.F. is an inventor on patents and/or patent applications related to human kidney organoid differentiation and modeling of disease in this system (these include \u201CThree-dimensional differentiation of epiblast spheroids into kidney tubular organoids modeling human microphysiology, toxicology, and morphogenesis\u201D [Japan, US, and Australia], licensed to STEMCELL Technologies; \u201CHigh-throughput automation of organoids for identifying therapeutic strategies\u201D [PTC patent application pending]; and \u201CSystems and methods for characterizing pathophysiology\u201D [PTC patent application pending]). B.S.F. and H.F. hold ownership interest in Plurexa, LLC. None of the preceding interests affected in any way the results of the paper or would be affected by them but are shared by way of transparency. We thank Byungha Chung and Rebecca Hjorten for preliminary studies on APOL1 immunolocalization. We thank Stuart Shankland, Hannele Ruohola-Baker, Scott S. Tykodi, and Abhijit S. Naik. Illustrations were created with BioRender.com . Studies were supported by NIH awards R01DK130386 (B.S.F., K.D.S., and R.A.), R01DK117914 (B.S.F.), UH3TR000504 (J.H.), UH3TR002158 (J.H.), UH3TR03288 (J.H. and M.K.), U01DK127553 (B.S.F.), and 5UC2DK126006 (S.J.S.); Department of Defense awards W81XWH-21-1-0006 and W81XWH-21-1-0007 (B.S.F. and H.R.B.); DOD Kidney Cancer Research Program Translational Research Partnership Award KC180135 (S.A. and S.S.T.); and NASA Proposal #21-3DTMPS_2-0001.
Keywords
- CP: Cell biology
- CP: Immunology
- baricitinib
- caspase
- cell death
- gasdermin
- glomerulosclerosis
- inflammation
- podocalyxin
- proteomics
- pyroptosis
- spatial transcriptomics
ASJC Scopus subject areas
- General Biochemistry, Genetics and Molecular Biology