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2016 ; 7
(42
): 67986-68001
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Identification of a new class of WNT1 inhibitor: Cancer cells migration,
G-quadruplex stabilization and target validation
#MMPMID27626678
Chang LC
; Chen TC
; Chen SJ
; Chen CL
; Lee CC
; Wu SH
; Yen Y
; Huang HS
; Lin JJ
Oncotarget
2016[Oct]; 7
(42
): 67986-68001
PMID27626678
show ga
Developing the Wnt pathway inhibitors has been considered as a therapeutic
approach for cancers and other Wnt-related diseases. Previously we found that the
G-rich sequence of WNT1 promoter is capable of forming G-quadruplex structure and
stabilizing agents for Wnt1-mediated signaling pathway. Using a established
cell-based drug screen system that enabled the evaluation of WNT1 expression
activity in a G-quadruplex structure dependent manner, we evaluated a series of
6-substituted 9-chloro-11H-indeno[1,2-c]quinolin-11-one derivatives that
potentially inhibit the Wnt1-mediated signaling pathway. The most potent compound
SJ26 showed repression of WNT1 activity in a G-quadruplex structure-dependent
manner. Moreover, compound SJ26 inhibited the WNT1-mediated downstream signaling
pathway and suppressed migration activity of cancer cells. Thus, we have
identified a tetracyclic azafluorenone, SJ26, that is capable of binding to
G-quadruplex DNA structure, repressing WNT1 expression, and inhibiting cell
migration.