Abstract
Colon cancer-associated transcript_1 (CCAT1) is a long noncoding RNA that maps to chromosome 8q24.21, it was first discovered to be upregulated in colorectal cancer. Recent studies have observed the CCAT1 overexpression in primary human solid cancers and cell lines as well as in AML, moreover, it repressed monocytic differentiation and promoted cell growth of HL-60 by sequestering tumor suppressive miR-155. However, the prognostic value of CCAT1/miR-155a pathway in acute myeloid Leukemia (AML) has not been investigated on clinical samples. In this study, the expression levels of CCAT1 and miR_155a was measured in 150 AML patients with standard and high-risk factors; CCAT1 and miR_155a were increased by 2.7 and 5.7 folds; respectively in AML compared to healthy controls. Furtherly, upregulation of both biomarkers was significantly associated with high risk AML. Collectively, these results suggest that CCAT1 and miR_155a can be considered as a diagnostic and prognostic biomarker in AML.
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