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• W4207059462 abstract "Summary Nephronophthisis (NPH) is an autosomal recessive tubulointerstitial nephropathy belonging to the ciliopathy disorders and known as the most common cause of hereditary end-stage renal disease in children. Yet, no curative treatment is available. The major gene, NPHP1 , encodes a protein playing key functions at the primary cilium and cellular junctions. Using an in cellulo medium-throughput drug-screen, we identified 51 FDA-approved compounds and selected 11 for their physicochemical properties, including prostaglandin E 1 (PGE1). PGE1 was further validated to rescue ciliogenesis in immortalized patient NPHP1 -/- urine-derived renal tubular cells and corroborated by the effects of its analog PGE2. The two molecules reduced pronephric cyst occurrence in vivo in nphp4 zebrafish model, and PGE1 treatment in Nphp1 -/- mice led to a significant reduction of renal tubular dilatations, partially restoring cilia length within tubules. Finally, comparative transcriptomics allowed identification of key molecules downstream PGE1. Altogether, our drug-screen strategy led to the identification of PGE1 as the first potential therapeutic molecule for NPH-associated ciliopathies. Significant statement Juvenile nephronophthisis (NPH) is a renal ciliopathy due to a dysfunction of primary cilia and a common genetic cause of end-stage renal disease in children and young adults. No curative treatment is available. This paper describes the identification of Prostaglandin E1 (PGE1) as the first potential therapeutic molecule for NPH-associated ciliopathies. We demonstrated that PGE1 rescues defective ciliogenesis and ciliary composition in NPHP1 -/- patient urine-derived renal tubular cells. Furthermore, PGE1 improves ciliary and kidney phenotypes in our NPH zebrafish and Nphp1 -/- mouse models. Finally, in vitro experiments as well as transcriptomic analyses pointed out several pathways downstream PGE1 as cAMP, cell-cell/cell-matrix adhesion or actin cytoskeleton. Altogether, our findings provide a new alternative for treatment of NPH." @default.
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• W4207059462 date "2022-01-23" @default.
• W4207059462 modified "2023-10-18" @default.
• W4207059462 title "Prostaglandin E₁ as therapeutic molecule for Nephronophthisis and related ciliopathies" @default.
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• W4207059462 doi "https://doi.org/10.1101/2022.01.21.477191" @default.
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