Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\27214281
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Nat+Cell+Biol
2016 ; 18
(7
): 752-764
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
The polycystin complex mediates Wnt/Ca(2+) signalling
#MMPMID27214281
Kim S
; Nie H
; Nesin V
; Tran U
; Outeda P
; Bai CX
; Keeling J
; Maskey D
; Watnick T
; Wessely O
; Tsiokas L
Nat Cell Biol
2016[Jul]; 18
(7
): 752-764
PMID27214281
show ga
WNT ligands induce Ca(2+) signalling on target cells. PKD1 (polycystin 1) is
considered an orphan, atypical G-protein-coupled receptor complexed with TRPP2
(polycystin 2 or PKD2), a Ca(2+)-permeable ion channel. Inactivating mutations in
their genes cause autosomal dominant polycystic kidney disease (ADPKD), one of
the most common genetic diseases. Here, we show that WNTs bind to the
extracellular domain of PKD1 and induce whole-cell currents and Ca(2+) influx
dependent on TRPP2. Pathogenic PKD1 or PKD2 mutations that abrogate complex
formation, compromise cell surface expression of PKD1, or reduce TRPP2 channel
activity suppress activation by WNTs. Pkd2(-/-) fibroblasts lack WNT-induced
Ca(2+) currents and are unable to polarize during directed cell migration. In
Xenopus embryos, pkd1, Dishevelled 2 (dvl2) and wnt9a act within the same pathway
to preserve normal tubulogenesis. These data define PKD1 as a WNT (co)receptor
and implicate defective WNT/Ca(2+) signalling as one of the causes of ADPKD.