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2017 ; 14
(4
): 4294-4300
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Honokiol inhibits bladder cancer cell invasion through repressing SRC-3
expression and epithelial-mesenchymal transition
#MMPMID28943942
Shen L
; Zhang F
; Huang R
; Yan J
; Shen B
Oncol Lett
2017[Oct]; 14
(4
): 4294-4300
PMID28943942
show ga
Urinary bladder cancer (UBC) is one of the most common urological cancer types.
Muscle invasive bladder cancer possesses high propensity for metastasis with poor
prognosis. Honokiol is a lignan isolated from Magnolia officinalis with high
bioavailability and potent anticancer effects. The results of the present study
demonstrated that honokiol significantly inhibited UBC cell migration and
invasion in a dose-dependent manner compared with the vehicle-treated control
group. In addition, honokiol treatment suppressed epithelial-mesenchymal
transition by induction of E-cadherin and repression of N-cadherin. Honokiol was
capable of significantly downregulating the expression of cell
invasion-associated genes, steroid receptor coactivator-3 (SRC-3), matrix
metalloproteinase (MMP)-2 and Twist1. Notably, the inhibition of UBC cell
invasion by honokiol was reversed by reintroduction of oncoprotein SRC-3
expression, with the restoration of MMP-2 and Twist1, and reduction of E-cadherin
expression. Furthermore, the results of the luciferase assay confirmed that SRC-3
could regulate Twist1 promoter activity. Taken together, the results of the
present study suggest that honokiol is a promising agent against UBC cell
invasion via downregulation of SRC-3 and its target genes.