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2016 ; 7
(8
): 9296-308
Nephropedia Template TP
gab.com Text
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English Wikipedia
A novel small molecule agent displays potent anti-myeloma activity by inhibiting
the JAK2-STAT3 signaling pathway
#MMPMID26814430
Zhang Z
; Mao H
; Du X
; Zhu J
; Xu Y
; Wang S
; Xu X
; Ji P
; Yu Y
; Cao B
; Han K
; Hou T
; Xu Z
; Kong Y
; Jiang G
; Tang X
; Qiao C
; Mao X
Oncotarget
2016[Feb]; 7
(8
): 9296-308
PMID26814430
show ga
The oncogenic STAT3 signaling pathway is emerging as a promising target for the
treatment of multiple myeloma (MM). In the present study, we identified a novel
STAT3 inhibitor SC99 in a target-based high throughput screen. SC99 inhibited
JAK2-STAT3 activation but had no effects on other transcription factors such as
NF-?B, and kinases such as AKT, ERK, and c-Src that are in association with STAT3
signaling pathway. Furthermore, SC99 downregulated the expression of
STAT3-modulated genes, including Bcl-2, Bcl-xL, VEGF, cyclin D2, and E2F-1. By
inhibiting the STAT3 signaling, SC99 induced MM cell apoptosis which could be
partly abolished by the ectopic expression of STAT3. Furthermore, SC99 displayed
potent anti-MM activity in two independent MM xenograft models in nude mice. Oral
administration of SC99 led to marked decrease of tumor growth within 10 days at a
daily dosage of 30 mg/kg, but did not raise toxic effects. Taken together, this
study identified a novel oral JAK2/STAT3 inhibitor that could be developed as an
anti-myeloma agent.