title: UHRF2 mRNA expression is low in malignant glioma but silencing inhibits the growth of U251 glioma cells in vitro.
abstract: UHRF2 is a member of the ubiquitin plant homeo domain RING finger family, which has been proven to be frequently up-regulated in colorectal cancer cells and play a role as an oncogene in breast cancer cells. However, the role of UHRF2 in glioma cells remains unclear. In this study, we performed real-time quantitative PCR on 32 pathologically confirmed glioma samples (grade I, 4 cases; grade II, 11 cases; grade III, 10 cases; and grade IV, 7 cases; according to the 2007 WHO classification system) and four glioma cell lines (A172, U251, U373, and U87). The expression of UHRF2 mRNA was significantly lower in the grade III and grade IV groups compared with the noncancerous brain tissue group, whereas its expression was high in A172, U251, and U373 glioma cell lines. An in vitro assay was performed to investigate the functions of UHRF2. Using a lentivirus-based RNA interference (RNAi) approach, we down-regulated UHRF2 expression in the U251 glioma cell line. This down- regulation led to the inhibition of cell proliferation, an increase in cell apoptosis, and a change of cell cycle distribution, in which S stage cells decreased and G2/M stage cells increased. Our results suggest that UHRF2 may be closely related to tumorigenesis and the development of gliomas.
authors.affiliation: Neurosurgery and Brain and Nerve Research Laboratory, First Affiliated Hospital of Soochow University, Suzhou, China.
authors.forename: Ting-Feng
authors.initials: TF
authors.lastname: Wu
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.forename: Zuo-Peng
authors.initials: ZP
authors.lastname: Su
authors.forename: San-Song
authors.initials: SS
authors.lastname: Chen
authors.forename: Gui-Lin
authors.initials: GL
authors.lastname: Chen
authors.forename: Yong-Xin
authors.initials: YX
authors.lastname: Wei
authors.forename: Ting
authors.initials: T
authors.lastname: Sun
authors.forename: Xue-Shun
authors.initials: XS
authors.lastname: Xie
authors.forename: Bin
authors.initials: B
authors.lastname: Li
authors.forename: You-Xin
authors.initials: YX
authors.lastname: Zhou
authors.forename: Zi-Wei
authors.initials: ZW
authors.lastname: Du
mesh_terms: D000328:Adult; D017209:Apoptosis; D001921:Brain / Q000378:metabolism; D001932:Brain Neoplasms / Q000235:genetics* / Q000378:metabolism / Q000473:pathology; D002453:Cell Cycle; D049109:Cell Proliferation; D005260:Female; D005434:Flow Cytometry; D005500:Follow-Up Studies; D015972:Gene Expression Regulation, Neoplastic; D005910:Glioma / Q000235:genetics* / Q000378:metabolism / Q000473:pathology; D006801:Humans; D066298:In Vitro Techniques; D008297:Male; D060787:Neoplasm Grading; D011379:Prognosis; D012333:RNA, Messenger / Q000235:genetics*; D034741:RNA, Small Interfering / Q000235:genetics*; D060888:Real-Time Polymerase Chain Reaction; D020133:Reverse Transcriptase Polymerase Chain Reaction; D012307:Risk Factors; D014407:Tumor Cells, Cultured; D044767:Ubiquitin-Protein Ligases / Q000037:antagonists & inhibitors / Q000235:genetics* / Q000378:metabolism
chemical_list: D012333:RNA, Messenger; D034741:RNA, Small Interfering; C465619:UHRF2 protein, human; D044767:Ubiquitin-Protein Ligases