title: Metastasis tumor-associated protein-2 knockdown suppresses the proliferation and invasion of human glioma cells in vitro and in vivo.
abstract: Metastasis tumor-associated protein 2 (MTA2) is a member of the MTA family that is closely associated with tumor progression and metastasis. However, the role of MTA2 in glioma cells remains unclear. The expression of MTA2 was measured using immunohistochemistry and western blotting in the human brain tumor tissue array and human glioma cell lines. The impact of MTA2 knockdown on GBM8401 and Hs683 cell growth was evaluated by MTT assay and flow cytometry. Cell migration and invasion were analyzed by cell-migration assay and Matrigel invasion assay. In addition, we used subcutaneous tumor models to study the effect of MTA2 on the growth of glioma cells in vivo. We found that MTA2 protein and mRNA expression are higher in GBM8401 and Hs683 cells than in other glioma cells (M059 J, M059 K and U-87 MG), and glioma tumor tissue correlated significantly with tumor grade (P < 0.001). Knockdown of MTA2 expression significantly inhibited cell growth, cell migration and invasion, and induced G0/G1 phase arrest in human GBM8401 and Hs683 cells in vitro. Moreover, in vivo studies using subcutaneous xenografts in mice models indicate that MTA2 knockdown significantly inhibited tumorigenicity. These results indicate that MTA2 plays an important oncogenic role in the development and progression of gliomas.
authors.affiliation: Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan.
authors.forename: Chun-Yuan
authors.initials: CY
authors.lastname: Cheng
authors.forename: Ying-Erh
authors.initials: YE
authors.lastname: Chou
authors.forename: Chung-Po
authors.initials: CP
authors.lastname: Ko
authors.forename: Shun-Fa
authors.initials: SF
authors.lastname: Yang
authors.forename: Shu-Ching
authors.initials: SC
authors.lastname: Hsieh
authors.forename: Chia-Liang
authors.initials: CL
authors.lastname: Lin
authors.forename: Yi-Hsien
authors.initials: YH
authors.lastname: Hsieh
authors.forename: Kun-Chung
authors.initials: KC
authors.lastname: Chen
mesh_terms: D000818:Animals; D017209:Apoptosis; D015153:Blotting, Western; D001921:Brain / Q000378:metabolism*; D001932:Brain Neoplasms / Q000235:genetics / Q000378:metabolism / Q000473:pathology*; D016022:Case-Control Studies; D002465:Cell Movement; D049109:Cell Proliferation; D005260:Female; D005434:Flow Cytometry; D005910:Glioma / Q000235:genetics / Q000378:metabolism / Q000473:pathology*; D006655:Histone Deacetylases / Q000235:genetics / Q000378:metabolism*; D006801:Humans; D007124:Immunoenzyme Techniques; D066298:In Vitro Techniques; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D008819:Mice, Nude; D008875:Middle Aged; D060787:Neoplasm Grading; D012333:RNA, Messenger / Q000235:genetics; D034741:RNA, Small Interfering / Q000235:genetics; D060888:Real-Time Polymerase Chain Reaction; D012097:Repressor Proteins / Q000037:antagonists & inhibitors / Q000235:genetics / Q000378:metabolism*; D020133:Reverse Transcriptase Polymerase Chain Reaction; D014407:Tumor Cells, Cultured; D023041:Xenograft Model Antitumor Assays
chemical_list: D012333:RNA, Messenger; D034741:RNA, Small Interfering; D012097:Repressor Proteins; C120917:MTA2 protein, human; D006655:Histone Deacetylases