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2015 ; 10
(8
): e0136843
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Targeting the Sonic Hedgehog-Gli1 Pathway as a Potential New Therapeutic Strategy
for Myelodysplastic Syndromes
#MMPMID26317501
Zou J
; Zhou Z
; Wan L
; Tong Y
; Qin Y
; Wang C
; Zhou K
PLoS One
2015[]; 10
(8
): e0136843
PMID26317501
show ga
The complex mechanistic array underlying the pathogenesis of myelodysplastic
syndrome (MDS) is still unclear. Although dysregulations of different signaling
pathways involved in MDS have been described, the identification of specific
biomarkers and therapy targets remains an important task in order to establish
novel therapeutic approaches. Here, we demonstrated that the Shh signaling
pathway is active in MDS and correlated it with disease progression.
Additionally, the knockdown of Gli1 significantly inhibited cell proliferation in
vitro and in vivo. Gli1 silencing also induced apoptosis and G0/G1 phase arrest.
Furthermore, Gli1 silencing enhanced the demethylating effect of
5-aza-2'-deoxycytidine on the p15 gene promoter and subsequently promoted its
expression by inhibiting DNA methyltransferase 1(DNMT1). Our findings show that
the Shh signaling pathway plays a role in the pathogenesis and disease
progression of MDS, and proceeds by modulating DNA methylation. This pathway may
prove to be a potential therapeutic target for enhancing the therapeutic effects
of 5-azacytidine on malignant transformation of MDS.