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2018 ; 52
(5
): 1455-1464
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FSCN?1 increases doxorubicin resistance in hepatocellular carcinoma through
promotion of epithelial-mesenchymal transition
#MMPMID29568938
Zhang Y
; Lu Y
; Zhang C
; Huang D
; Wu W
; Zhang Y
; Shen J
; Cai Y
; Chen W
; Yao W
Int J Oncol
2018[May]; 52
(5
): 1455-1464
PMID29568938
show ga
Resistance to chemotherapy drugs remains a significant problem for the treatment
of many types of cancer. Fascin?1 (FSCN?1) is an actin-bundling protein involved
in the invasion and metastasis of a variety of tumors. However, its involvement
in drug resistance in hepatocellular carcinoma (HCC) remains unclear. The present
study aimed to investigate the function of FSCN?1 in HCC resistance to
doxorubicin (DOX). FSCN?1 expression was increased in DOX-resistant HCC cell
lines (SNU449 and SNU387) compared with DOX-sensitive cell lines (Huh7 and
Hep3B). The resistance of HCC cells to DOX was decreased following FSCN?1
knockdown with small interfering RNA. FSCN?1 knockdown also significantly altered
the expression of key markers of epithelial-mesenchymal transition (EMT).
Notably, vimentin expression was reduced and epithelial?cadherin expression was
increased. Furthermore, when EMT was suppressed through knockdown of Twist, an
essential pathway of DOX-induced EMT, the viability of HCC cells following
treatment with DOX was not affected by FSCN?1 expression. Furthermore, FSCN?1
knockdown eliminated hypoxia-induced doxorubicin resistance and EMT. The results
of the present study indicated that FSCN?1 expression increased DOX resistance in
HCC cells via the promotion of EMT, and this phenomenon was maintained in a
hypoxic environment. FSCN?1 potentially represents a novel target to overcome
resistance to DOX in HCC.