title: Pleomorphic adenoma gene like-2 induces epithelial-mesenchymal transition via Wnt/β-catenin signaling pathway in human colorectal adenocarcinoma.
abstract: Epithelial-mesenchymal transition (EMT) is a critical step in the acquisition of metastatic and invasive power for tumor cells. Colorectal adenocarcinoma (CRC) is a common cancer where metastasis is directly linked to patient survival. Recent studies show that pleomorphic adenoma gene like-2 (PLAGL2) could induce tumor EMT and is an independent predictive factor associated with poor prognosis in cancer. In the present study, we confirmed the role of PLAGL2 in the prognosis of CRC patients and provide molecular evidence of PLAGL2 promoted EMT in CRC cell line SW480. We found that PLAGL2 expression was upregulated in the paraffin-embedded CRC tissues compared to borderline or benign tissues. Experimental EMT induced by PLAGL2 plasmid transfection proved PLAGL2 protein overexpression could enhance the cell scratch wound-healing and transwell ability and significantly upregulated mesenchymal marker proteins, N-cadherin and vimentin and concurrently downregulated epithelial marker of E-cadherin. Subsequently, through western blot assay, we found that PLAGL2 could activate the wnt-signaling component β-catenin in the nuclei. More CRC cell metastasis to the lungs was observed when the PLAGL2 overexpressing SW480 cells were injected into the tail vein of rats, compared with the cell control and PLAGL2 silence group. Our findings indicated that PLAGL2 might be a very upstream key molecule regulating EMT involved in Wnt/β‑catenin signaling pathway.
authors.affiliation: Department of Colorectal Surgery, Cancer Hospital of China Medical University, Shenyang, Liaoning, P.R. China.
authors.forename: Yong-Peng
authors.initials: YP
authors.lastname: Wang
authors.affiliation: Department of Surgical Oncology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, P.R. China.
authors.forename: Peng-Tao
authors.initials: PT
authors.lastname: Guo
authors.affiliation: Department of Surgical Oncology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, P.R. China.
authors.forename: Zhi
authors.initials: Z
authors.lastname: Zhu
authors.affiliation: Department of Colorectal Surgery, Cancer Hospital of China Medical University, Shenyang, Liaoning, P.R. China.
authors.forename: Hao
authors.initials: H
authors.lastname: Zhang
authors.affiliation: Department of Surgical Oncology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, P.R. China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Xu
authors.affiliation: Department of Colorectal Surgery, Cancer Hospital of China Medical University, Shenyang, Liaoning, P.R. China.
authors.forename: Yu-Ze
authors.initials: YZ
authors.lastname: Chen
authors.affiliation: Department of Colorectal Surgery, Cancer Hospital of China Medical University, Shenyang, Liaoning, P.R. China.
authors.forename: Fang
authors.initials: F
authors.lastname: Liu
authors.affiliation: Department of Colorectal Surgery, Cancer Hospital of China Medical University, Shenyang, Liaoning, P.R. China.
authors.forename: Si-Ping
authors.initials: SP
authors.lastname: Ma
mesh_terms: D000230:Adenocarcinoma / Q000235:genetics* / Q000473:pathology; D000368:Aged; D000369:Aged, 80 and over; D000818:Animals; D045744:Cell Line, Tumor; D002465:Cell Movement / Q000235:genetics; D015179:Colorectal Neoplasms / Q000235:genetics* / Q000473:pathology; D004268:DNA-Binding Proteins / Q000096:biosynthesis / Q000235:genetics*; D058750:Epithelial-Mesenchymal Transition / Q000235:genetics*; D005260:Female; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis; D016601:RNA-Binding Proteins / Q000096:biosynthesis / Q000235:genetics*; D051381:Rats; D014157:Transcription Factors / Q000096:biosynthesis / Q000235:genetics*; D014746:Vimentin / Q000235:genetics; D060449:Wnt Signaling Pathway / Q000235:genetics; D023041:Xenograft Model Antitumor Assays; D051176:beta Catenin / Q000235:genetics
chemical_list: D004268:DNA-Binding Proteins; C114598:PLAGL2 protein, human; D016601:RNA-Binding Proteins; D014157:Transcription Factors; D014746:Vimentin; D051176:beta Catenin