Author/Authors :
Liyun Sang، نويسنده , , Julie J. Miller، نويسنده , , Kevin C. Corbit، نويسنده , , Rachel H. Giles، نويسنده , , Matthew J. Brauer، نويسنده , , Edgar A. Otto، نويسنده , , Lisa M. Baye، نويسنده , , Xiaohui Wen، نويسنده , , Suzie J. Scales، نويسنده , , Mandy Kwong، نويسنده , , Erik G. Huntzicker، نويسنده , , Mindan K. Sfakianos، نويسنده , , Wendy Sandoval، نويسنده , , J. Fernando Bazan، نويسنده , , Priya Kulkarni، نويسنده , , Francesc R. Garcia-Gonzalo، نويسنده , , Allen D. Seol، نويسنده , , John F. OʹToole، نويسنده , , Susanne Held، نويسنده , , Heiko M. Reutter، نويسنده , , et al.، نويسنده ,
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.
