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2015 ; 9
(6
): 2859-2863
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LGR5 promotes the proliferation of colorectal cancer cells via the Wnt/?-catenin
signaling pathway
#MMPMID26137160
Lin YU
; Wu T
; Yao Q
; Zi S
; Cui L
; Yang M
; Li J
Oncol Lett
2015[Jun]; 9
(6
): 2859-2863
PMID26137160
show ga
Leucine-rich repeat-containing G-protein coupled receptor 5 (LGR5) is an
established cancer stem cell marker and is a target gene of the Wnt/?-catenin
signaling pathway, a critical pathway in the process of tumor initiation and
growth. In the present study, the mRNA expression levels of LGR5, adenomatous
polyposis coli (APC) and ?-catenin were detected in 20 colorectal cancer (CRC)
tissues and matched healthy mucosa samples using reverse
transcription-quantitative polymerase chain reaction. HT-29 CRC cell line was
treated with siRNA-Lgr5; the APC, ?-catenin and LGR5 RNA expressions were
detected and cell viability was measured using a CCK8 assay. The results revealed
that LGR5 was significantly overexpressed in CRC tissue compared with healthy
mucosa (P<0.05). Furthermore, knockdown of LGR5 by small interfering RNA
decreased the expression of APC and ?-catenin in HT29 colon cancer cells as well
as inhibited the proliferation of HT29 cells. These findings demonstrated that
LGR5 expression is critical for the promotion of neoplastic CRC cell
proliferation, indicating that LGR5 may be a novel therapeutic target for CRC.