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Mapping the NPHP-JBTS-MKS protein network reveals ciliopathy disease genes and pathways
Journal article   Open access   Peer reviewed

Mapping the NPHP-JBTS-MKS protein network reveals ciliopathy disease genes and pathways

Liyun Sang, Julie J Miller, Kevin C Corbit, Rachel H Giles, Matthew J Brauer, Edgar A Otto, Lisa M Baye, Xiaohui Wen, Suzie J Scales, Mandy Kwong, …
Cell (Cambridge), Vol.145(4), pp.513-528
05/13/2011
DOI: 10.1016/j.cell.2011.04.019
PMCID: PMC3383065
PMID: 21565611
url
https://doi.org/10.1016/j.cell.2011.04.019View
Published (Version of record) Open Access

Abstract

Nephronophthisis (NPHP), Joubert (JBTS), and Meckel-Gruber (MKS) syndromes are autosomal-recessive ciliopathies presenting with cystic kidneys, retinal degeneration, and cerebellar/neural tube malformation. Whether defects in kidney, retinal, or neural disease primarily involve ciliary, Hedgehog, or cell polarity pathways remains unclear. Using high-confidence proteomics, we identified 850 interactors copurifying with nine NPHP/JBTS/MKS proteins and discovered three connected modules: "NPHP1-4-8" functioning at the apical surface, "NPHP5-6" at centrosomes, and "MKS" linked to Hedgehog signaling. Assays for ciliogenesis and epithelial morphogenesis in 3D renal cultures link renal cystic disease to apical organization defects, whereas ciliary and Hedgehog pathway defects lead to retinal or neural deficits. Using 38 interactors as candidates, linkage and sequencing analysis of 250 patients identified ATXN10 and TCTN2 as new NPHP-JBTS genes, and our Tctn2 mouse knockout shows neural tube and Hedgehog signaling defects. Our study further illustrates the power of linking proteomic networks and human genetics to uncover critical disease pathways.
Signal Transduction Polycystic Kidney Diseases - genetics NIH 3T3 Cells Membrane Proteins - genetics Humans Hedgehog Proteins - metabolism Zebrafish Nerve Tissue Proteins - genetics Cilia - metabolism Centrosome - metabolism Kidney Diseases, Cystic - metabolism Animals Kidney Diseases, Cystic - genetics Ataxin-10 Mice Ciliary Motility Disorders - genetics Encephalocele - genetics

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