Biallelic ANKS6 mutations cause late-onset ciliopathy with chronic kidney disease through YAP dysregulation
| Autor: | Bernt Popp, Markus Schueler, Rannar Airik, Thorsten Wiech, Hannah Schwarz, André Reis, Nasrin Torabi, Johanna Stoeckert, Mario Schiffer, Kerstin Amann, Karl X. Knaup, Michael S. Wiesener |
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| Rok vydání: | 2021 |
| Předmět: |
Male
Ciliary inversin compartment Endocytic recycling Biology Ciliopathies Genetics medicine Humans Cilia Renal Insufficiency Chronic Molecular Biology Genetics (clinical) Exome sequencing Hippo signaling pathway Polycystic Kidney Diseases Cilium Wnt signaling pathway Nuclear Proteins General Medicine Kidney Diseases Cystic medicine.disease Ciliopathy Mutation Cancer research Female |
| Zdroj: | Human molecular genetics. 31(9) |
| ISSN: | 1460-2083 |
| Popis: | Nephronophthisis-related ciliopathies (NPHP-RC) comprises a group of inherited kidney diseases, caused by mutations in genes encoding proteins localizing to primary cilia. NPHP-RC represents one of the most frequent monogenic causes of renal failure within the first three decades of life, but its molecular disease mechanisms remain unclear. Here, we identified biallelic ANKS6 mutations in two affected siblings with late-onset chronic kidney disease by whole-exome sequencing. We employed patient-derived fibroblasts generating an in vitro model to study the precise biological impact of distinct human ANKS6 mutations, completed by immunohistochemistry studies on renal biopsy samples. Functional studies using patient-derived cells showed an impaired integrity of the ciliary inversin compartment with reduced cilia length. Further analyses demonstrated that ANKS6 deficiency leads to a dysregulation of Hippo-signaling through nuclear yes-associated protein (YAP) imbalance and disrupted ciliary localization of YAP. In addition, an altered transcriptional activity of canonical Wnt target genes and altered expression of non-phosphorylated (active) β-catenin and phosphorylated glycogen synthase kinase 3β were observed. Upon ciliation, ANKS6 deficiency revealed a deranged subcellular localization and expression of components of the endocytic recycling compartment. Our results demonstrate that ANKS6 plays a key role in regulating the Hippo pathway, and ANKS6 deficiency is linked to dysregulation of signaling pathways. Our study provides molecular clues in understanding pathophysiological mechanisms of NPHP-RC and may offer new therapeutic targets. |
| Databáze: | OpenAIRE |
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