Ugene, a Newly Identified Protein That Is Commonly Overexpressed in Cancer and Binds Uracil DNA Glycosylase
Research Article Ugene, a Newly Identified Protein That Is Commonly Overexpressed in Cancer and Binds Uracil DNA Glycosylase Chunguang Guo,1,4 Xiaodong Zhang,3,4 Stephen P. Fink,2,4 Petra Platzer,2,4 Keith Wilson,7 James K.V. Willson,8 Zhenghe Wang,3,4 and Sanford D. Markowitz1,2,4,5,6 Departments of 1Molecular Biology and Microbiology, 2Medicine, and 3Genetics; 4Case Comprehensive Cancer Center, Case Western Reserve University; 5Case Medical Center; 6Howard Hughes Medical Institute, Cleveland, Ohio; 7PDL BioPHARMA, Redwood City, California; and 8Harold C. Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, Texas Abstract complex with uracil DNA glycosylase 2 (UNG2), a base excision Expression microarrays identified a novel transcript, desig- repair (BER) enzyme. nated as Ugene, whose expression is absent in normal colon and colon adenomas, but that is commonly induced in Materials and Methods malignant colon cancers. These findings were validated by Cell lines and tissues. VACO cell lines were established and maintained real-time PCR and Northern blot analysis in an independent as previously described (7). DLD1 and SW480 cell lines were obtained from panel of colon cancer cases. In addition, Ugene expression was the American Type Culture Collection. Normal colons, primary colon found to be elevated in many other common cancer types, cancers, and liver metastasis tissues were obtained from the archives of including breast, lung, uterus, and ovary. Immunofluores- University Hospitals of Cleveland under an institutional review board– cence of V5-tagged Ugene revealed it to have a nuclear approved protocol. Total RNA and genomic DNA were prepared as described (8).
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