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- W2327500986 abstract "Proceedings: AACR 103rd Annual Meeting 2012‐‐ Mar 31‐Apr 4, 2012; Chicago, IL[Aim] MicroRNAs (miRNAs) are small non-coding RNAs that regulate gene expression at a post-transcriptional level. Previous study from our group identified forty nine miRNAs that are expressed differentially by comparing 26 pair samples of hepatocellular carcinoma (HCC) tumor tissue and non-tumor liver tissue using next-generation sequencer system. In this study, the expression of hsa-miR-199a and hsa-miR-199b, one of the extracted targets from our study, were investigated by real-time PCR using validation set HCC samples, and were examined the correlation between the miRNA expression and clinical data. [Patients and Methods] Forty-eight patients diagnosed as HCC had undergone surgical removal from 1991 to 1997 at the Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University, Japan. The formalin-fixed paraffin embedded samples were prepared using the standard protocol. The paraffin blocks were cut into 10μm sections, and the tumor samples were collected using Laser-captured microdissection and total RNA including miRNA fraction were isolated. After synthesized cDNA using miRNA specific primer, real-time PCR was performed using miRNA specific primer/probe. [Results] The expression level of hsa-miR-199a and hsa-miR-199b were down-regulated in tumor compared to non-tumor (P<0.0001, P=0.0002, respectively). The patients were divided into two groups, higher/lower expression of each miRNA, the group of the higher hsa-miR-199a expression was significantly longer overall survival time compared to the lower expression group (P=0.0303). However, hsa-miR-199b was not significant difference (P=0.3801). [Conclusion] The hsa-miR-199a may be potential prognostic factor for HCC patients.Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 103rd Annual Meeting of the American Association for Cancer Research; 2012 Mar 31-Apr 4; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2012;72(8 Suppl):Abstract nr 5038. doi:1538-7445.AM2012-5038" @default.
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- W2327500986 date "2012-04-15" @default.
- W2327500986 modified "2023-09-27" @default.
- W2327500986 title "Abstract 5038: Non-cording microRNA hsa-miR-199a expression in hepatocellular carcinoma correlates with patient survival" @default.
- W2327500986 doi "https://doi.org/10.1158/1538-7445.am2012-5038" @default.
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