Journal Article

Function of UDP-glucuronosyltransferase 2B17 (UGT2B17) is involved in endometrial cancer

Hiroshi Hirata, Yuji Hinoda, Mohd S. Zaman, Yi Chen, Koji Ueno, Shahana Majid, Christina Tripsas, Mary Rubin, Lee-may Chen and Rajvir Dahiya

in Carcinogenesis

Volume 31, issue 9, pages 1620-1626
Published in print September 2010 | ISSN: 0143-3334
Published online June 2010 | e-ISSN: 1460-2180 | DOI: http://dx.doi.org/10.1093/carcin/bgq124
Function of UDP-glucuronosyltransferase 2B17 (UGT2B17) is involved in endometrial cancer

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Endometrial cancer (EC) is a steroid hormone-dependent cancer. Uridine 5′-diphospho-glucuronosyltransferase enzymes conjugate and detoxify endogenous and exogenous steroid hormones and environmental carcinogens. Among these enzymes, the function of UGT2B17 is unknown except for glucuronidation. The messenger RNA expression of UGT2B17 and myeloid cell leukemia-1 (Mcl-1) was significantly increased in EC tissues compared with matched normal endometrial tissues. Therefore, we focused on the function of UGT2B17 in EC. A total of nine patients with confirmed EC were enrolled in this study to investigate the expression of UGT2B17 and target genes. EC cell lines were used for functional tests including cell growth, invasion, apoptosis and cell cycle analyses. To find the target genes of UGT2B17, we performed microarray analysis to see which genes were upregulated or downregulated by UGT2B17-transfected cells. Functional analysis showed decreased numbers of viable cells and increased numbers of apoptotic cells in si-UGT2B17-transfected Ishikawa cells. Among microarray target genes, Mcl-1 was significantly downregulated in si-UGT2B17-transfected cells. We also found upregulation of Puma protein, a target of Mcl-1, in si-UGT2B17-transfected cells. This is the first report to show that UGT2B17 and Mcl-1 expression are upregulated in EC tissues and that UGT2B17 depletion induces inhibition of cell growth and apoptosis in EC cells through Mcl-1 downregulation.

Journal Article.  3943 words.  Illustrated.

Subjects: Clinical Cytogenetics and Molecular Genetics

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