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2017 ; 8
(31
): 50896-50903
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LGR5 promotes hepatocellular carcinoma metastasis through inducting
epithelial-mesenchymal transition
#MMPMID28881613
Liu J
; Yu GZ
; Cheng XK
; Li XD
; Zeng XT
; Ren XQ
Oncotarget
2017[Aug]; 8
(31
): 50896-50903
PMID28881613
show ga
The purpose of the present study was to investigate the prognostic value of
Leucine-rich repeat-containing G-protein coupled receptor 5 (LGR5) in
hepatocellular carcinoma (HCC) and its role in promoting HCC metastasis. The
expression level of LGR5 in liver tumor tissues and adjacent non-tumor tissues
were detected adopting immunohistochemistry (IHC), real-time PCR (RT-PCR) and
western blot assays. Chi-square test was used to evaluate the correlation between
LGR5 expression and clinicopathological characteristics. In addition, we assessed
the relationship between LGR5 and two epithelial-mesenchymal transition (EMT)
markers (E-cadherin and N-cadherin) in HCC tissues and cell lines. Our results
showed that the expression of LGR5 was significantly higher in liver tumor
tissues than in adjacent non-tumor tissues. Moreover, up-regulated LGR5 was
associated with larger tumor diameter (>5cm, P=0.001), higher TNM stage
(P=0.021), increased recurrence (P=0.023) and growing metastasis (P=0.030).
Besides, we found that the expression level of LGR5 was correlated with
E-cadherin and N-cadherin. In conclusion, up-regulated LGR5 in HCC patients is
associated with malignant clinicopathological characteristics. LGR5 may promote
HCC metastasis through inducting EMT process, and thus can be regarded as a
candidate biomarker for prognosis and as a target in therapy.