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2017 ; 14
(1
): 447-452
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Solamargine inhibits the migration and invasion of HepG2 cells by blocking
epithelial-to-mesenchymal transition
#MMPMID28693190
Xie X
; Zhu H
; Zhang J
; Wang M
; Zhu L
; Guo Z
; Shen W
; Wang D
Oncol Lett
2017[Jul]; 14
(1
): 447-452
PMID28693190
show ga
Solamargine (SM), a steroidal alkaloid glycoside purified from the Chinese
traditional herb Solanum incanum, is known to possess various biological
activities. However, only a few previous studies have reported the
anti-metastatic activity of SM. In the present study, the inhibitory effects of
SM on metastatic action were investigated in human HepG2 cells. The proliferation
effects of SM on the HepG2 cells was evaluated by MTT and colony formation
assays. Wound-healing and Transwell assays were performed to examine the
migration and invasion effects on SM-treated HepG2 cells. The
epithelial-to-mesenchymal transition (EMT)-associated markers (E-cadherin,
Vimentin and N-cadherin) were detected by western blotting analysis. In the
present study, MTT and colony formation assays indicated that SM suppressed HepG2
cell viability in a dose-dependent manner. The wound-healing and Transwell assays
revealed that the migration and invasion activities were significantly inhibited
following exposure to SM. EMT has been demonstrated to be essential for promoting
migration and invasion in tumor cells and has often been characterized with a
loss of epithelial markers (E-cadherin) and an increase of mesenchymal markers
(Vimentin and N-cadherin). In the western blotting analysis, the expression level
of E-cadherin was significantly upregulated compared with that in the control
group, whereas the expression levels of N-cadherin and Vimentin were
downregulated. Thus, it was suggested that the underlying mechanism of SM
inhibits migration and invasion in HepG2 cells and is associated with suppression
of EMT.