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2017 ; 23
(ä): 163-171
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Curcumin Inhibits Gastric Carcinoma Cell Growth and Induces Apoptosis by
Suppressing the Wnt/?-Catenin Signaling Pathway
#MMPMID28077837
Zheng R
; Deng Q
; Liu Y
; Zhao P
Med Sci Monit
2017[Jan]; 23
(ä): 163-171
PMID28077837
show ga
BACKGROUND Curcumin has well-known, explicit biological anti-tumor properties.
The Wnt/?-catenin signaling pathway plays a central role in tumor cell
proliferation and curcumin can regulate the Wnt/b-catenin signaling pathway of
several carcinomas. The aim of this study was to investigate the impact of
curcumin on the Wnt/?-catenin signaling pathway in human gastric cancer cells.
MATERIAL AND METHODS We used 3 gastric cancer cell lines: SNU-1, SNU-5, and AGS.
Research methods used were MTT assay, flow cytometry, clonogenic assay, annexin
V/PI method, Western blotting analysis, tumor formation assay, and in vivo in the
TUNEL assay. RESULTS Curcumin markedly impaired tumor cell viability and induced
apoptosis in vitro. Curcumin significantly suppressed the levels of Wnt3a, LRP6,
phospho-LRP6, ?-catenin, phospho-?-catenin, C-myc, and survivin. Xenograft growth
in vivo was inhibited and the target genes of Wnt/?-catenin signaling were also
reduced by curcumin treatment. CONCLUSIONS Curcumin exerts anti-proliferative and
pro-apoptotic effect in gastric cancer cells and in a xenograft model. Inhibition
of the Wnt/?-catenin signaling pathway and the subsequently reduced expression of
Wnt target genes show potential as a newly-identified molecular mechanism of
curcumin treatment.