TY - JOUR AB - Wnt/β‑catenin is an important signaling pathways involved in the tumorgenesis, progression and maintenance of cancer stem cells (CSCs). In the present study, the role of Wnt/β‑catenin signaling in CSC‑mediated tumorigenesis and invasion in liver CSCs was investigated. A small population of cancer stem‑like side population (SP) cells (3.6%) from liver cancer samples were identified. The cells were highly resistant to drug treatment due to the enhanced expression of drug efflux pumps, such as ABC subfamily G member 2, multidrug resistance protein 1 and ATP‑binding cassette subfamily B member 5. Furthermore, using TOPflash and reverse transcription‑quantitative polymerase chain reaction analysis, Wnt/β‑catenin signaling and the transcriptional regulation of Wnt/β‑catenin target genes including dickkopf Wnt signaling pathway inhibitor 1, axis inhibition protein 2 and cyclin D1 were observed to be markedly upregulated in liver cancer SP cells. As a consequence, SP cells possessed infinite cell proliferation potential and the ability to generating tumor spheres. In addition, upon reducing Wnt/β‑catenin signaling, the rates of proliferation, tumor sphere formation and tumor invasion of SP cells were markedly reduced. Therefore, these data suggest that Wnt/β‑catenin signaling is a potential therapeutic target to reduce CSC‑mediated tumorigenicity and invasion in liver cancer. AD - Department of Hepatopancreatobiliary Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, P.R. China Department of Endocrinology and Metabolism, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, P.R. China Department of Hepatic Surgery, The Third Affiliated Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510630, P.R. China AU - Chen,Wei AU - Zhang,Yu‑Wei AU - Li,Yang AU - Zhang,Jian‑Wen AU - Zhang,Tong AU - Fu,Bin‑Sheng AU - Zhang,Qi AU - Jiang,Nan DA - 2016/04/01 DO - 10.3892/mmr.2016.4986 EP - 3474 IS - 4 JO - Mol Med Rep KW - Wnt/β‑catenin drug resistance anticancer drugs cancer stem cells cyclin D1 PY - 2016 SN - 1791-2997 1791-3004 SP - 3466 ST - Constitutive expression of Wnt/β‑catenin target genes promotes proliferation and invasion of liver cancer stem cells T2 - Molecular Medicine Reports TI - Constitutive expression of Wnt/β‑catenin target genes promotes proliferation and invasion of liver cancer stem cells UR - https://doi.org/10.3892/mmr.2016.4986 VL - 13 ER -