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Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Dev+Cell 2015 ; 32 (6): 707-18 Nephropedia Template TP
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FOXKs promote Wnt/?-catenin signaling by translocating DVL into the nucleus #MMPMID25805136
Wang W; Li X; Lee M; Jun S; Aziz KE; Feng L; Tran MK; Li N; McCrea PD; Park JI; Chen J
Dev Cell 2015[Mar]; 32 (6): 707-18 PMID25805136show ga
Dishevelled (DVL) proteins serve as crucial regulators that transduce canonical Wnt signals to the GSK3?-destruction complex, resulting in the stabilization of ?-catenin. Emerging evidences underscore the nuclear functions of DVLs, which are critical for the Wnt/?-catenin signaling. However, the mechanism underlying DVL nuclear localization remains poorly understood. Here, we discovered two Forkhead box (FOX) transcription factors, FOXK1 and FOXK2, as bona-fide DVL-interacting proteins. FOXK1 and FOXK2 positively regulate Wnt/?-catenin signaling by translocating DVL into the nucleus. Moreover, FOXK1 and FOXK2 protein levels are elevated in human colorectal cancers and correlate with DVL nuclear localization. The conditional expression of Foxk2 in mice induced intestinal hyper-proliferation that featured with enhanced DVL-nuclear localization and up-regulated Wnt/?-catenin signaling. Together, our results not only reveal a mechanism by which DVL is translocated into nucleus, but also suggest unexpected roles of FOXK1 and FOXK2 in regulating Wnt/?-catenin signaling.