Analyses of differential miRNA expressions in tumor and normal tissues can identify specific miRNAs involved in cancer pathogenesis, which can then be used as diagnostic, therapeutic and prognostic biomarkers. In this respect, we aimed to investigate expression levels of seven CpG island-harboring miRNAs in 50 paired UBC tissues by qRT-PCR. miR-21 and miR-155 were found to be significantly upregulated, and miR-23b, miR-126, miR-129-5p, miR-143a and miR-218-5p were downregulated. ROC analysis indicated miR-155 as the most promising candidate for discrimination of tumors from healthy tissue, and miR-23b for the discrimination of early stage from late stage tumors.
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Analyses of differential miRNA expressions in tumor and normal tissues can identify specific miRNAs involved in cancer pathogenesis, which can then be used as diagnostic, therapeutic and prognostic biomarkers. In this respect, we aimed to investigate expression levels of seven CpG island-harboring miRNAs in 50 paired UBC tissues by qRT-PCR. miR-21 and miR-155 were found to be significantly upregulated, and miR-23b, miR-126, miR-129-5p, miR-143a and miR-218-5p were downregulated.
View Article and Find Full Text PDFCharacterization of the methylation-sensitive promoter of the imprinted ZAC gene supports its role in transient neonatal diabetes mellitus.
J Biol Chem
June 2001
UPR 9023 CNRS-Centre CNRS-INSERM de Pharmacologie-Endocrinologie-141, rue de la Cardonille, 34094 Montpellier Cedex 05, France.
ZAC is a recently isolated zinc finger protein that induces apoptosis and cell cycle arrest. The corresponding gene is imprinted maternally through an unknown mechanism and maps to 6q24-q25, within the minimal interval harboring the gene responsible for transient neonatal diabetes mellitus (TNDM) and a tumor suppressor gene involved in breast cancer. Because of its functional properties, imprinting status, and expression pattern in mammary cell lines and tumors, ZAC is the best candidate so far for both disease conditions.
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