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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Exp+Clin+Cancer+Res
2017 ; 36
(1
): 86
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HOXB7 accelerates the malignant progression of hepatocellular carcinoma by
promoting stemness and epithelial-mesenchymal transition
#MMPMID28646927
Huan HB
; Yang DP
; Wen XD
; Chen XJ
; Zhang L
; Wu LL
; Bie P
; Xia F
J Exp Clin Cancer Res
2017[Jun]; 36
(1
): 86
PMID28646927
show ga
BACKGROUND: Homeobox B7 (HOXB7) has been identified associated with poor
prognosis of hepatocellular carcinoma (HCC). However, the specific mechanism by
which HOXB7 promotes the malignant progression of HCC remains to be determined.
METHODS: Immunohistochemistry (IHC) was used to detect the expression level of
HOXB7 in 77-paired HCC tissue samples, and the correlation between HOXB7 and HCC
prognosis was assessed. The location of HOXB7 was confirmed by
immunofluorescence. Cell Titer-Blue assay was used to assess the proliferation of
hepatoma cells. The stem-like properties of hepatoma cells were analysed by
sphere formation and clone formation assays. The effect of HOXB7 on expression of
cancer stem cell markers was evaluated. Transwell and wound-healing assays were
performed to estimate the invasion and migration abilities of hepatoma cells. A
xenograft tumor model was established in nude mice to assess the role of HOXB7 in
tumor growth. Bioluminescence imaging was used to survey the effect of HOXB7 on
the metastatic ability of hepatoma cells in vivo. RESULTS: Higher expression of
HOXB7 was detected in HCC tissues compared with noncancerous tissues and
significantly associated with poor prognosis of HCC. In addition, HOXB7 knockdown
suppressed the cell proliferation, clone formation, sphere formation, invasion
and migration of hepatoma cells in vitro; conversely, these biological abilities
of hepatoma cells were enhanced by HOXB7 overexpression. Moreover, the cancer
stem cell markers EPCAM and NANOG were up-regulated by HOXB7. The role of HOXB7
in promoting tumor growth and metastasis was verified in vivo. Further
investigation revealed that c-Myc and Slug expression was elevated by HOXB7 and
the AKT pathway was activated. CONCLUSION: Overexpression of HOXB7 was
significantly correlated with poor prognosis of HCC. HOXB7 up-regulated c-Myc and
Slug expression via the AKT pathway to promote the acquisition of stem-like
properties and facilitate epithelial-mesenchymal transition of hepatoma cells,
accelerating the malignant progression of HCC.