Project description:miR-483-5p and miR-551a were over-expressed in a colon cancer cell-line LvM3b to identify genes that are down-regulated by the miRNAs over-expression. Total RNA was isolated from miR-483-5p or miR-551a over-expressing LvM3b cells as well as control LvM3b cells.
Project description:miR-483-5p and miR-551a were over-expressed in a colon cancer cell-line LvM3b to identify genes that are down-regulated by the miRNAs over-expression. Total RNA was isolated from miR-483-5p or miR-551a over-expressing LvM3b cells as well as control LvM3b cells.
Project description:miR-483-5p and miR-551a were over-expressed in a colon cancer cell-line LvM3b to identify genes that are down-regulated by the miRNAs over-expression.
Project description:miR-483-5p and miR-551a were over-expressed in a colon cancer cell-line LvM3b to identify genes that are down-regulated by the miRNAs over-expression.
Project description:To identify targets of miR-550a-3-5p in human colon cancer, HCT116 cell line expressing miR-550a-3-5p was subjected to Illumina microarrays.
Project description:miRNA abnormalities are increasingly relevent to cancer development, We used microarrays to detail the global programme of gene expression upon miR-483 overexpression in sarcoma cell line MHH-ES-1. MHH-ES-1 cells were transfected with miR-483-5p, -3p or scrambled control mimics and then harvested 48 hours after to isolate total RNAs using Trizol reagent (Invitrogen). Total RNA was converted to cRNA probes using the BioArray High Yield Transcript Labeling Kit (ENZO diagnostics), and hybridized to Affymetrix GeneChip human HG-U133ver2+ 3’-mRNA expression microarray chips using protocol EukGEs2v4 on the GeneChip Fluidic Station.
Project description:MicroRNAs (miRNAs) are abundant in the circulation and play a central role in diverse biological processes; they may be useful for early diagnosis of hepatocellular carcinoma (HCC). We conducted a two-phase, case-control study (20 pairs for the discovery set and 49 pairs for the validation set) to test the hypothesis that genome-wide dysregulation of circulating miRNAs differentiate HCC cases from controls. Taqman low density arrays were used to examine genome-wide miRNA expression for the discovery set, and quantitative RT-PCR was used to validate candidate miRNAs for both discovery and validation sets. Sixty-six miRNAs were found to be significantly over-expressed in plasma of HCC cases compared to controls after adjusting for false discovery rate (p<0.05). A volcano plot indicated that 7 miRNAs had greater than 2-fold case-control differences with p<0.01. Four significant miRNAs (miR-150, miR-30c, miR-483-5p and miR-520b) detectable in all samples with varied expression levels were further validated in a validation set. MiR-483-5p was statistically significantly over-expressed in HCC cases compared with controls (3.20 vs. 0.82, p<0.0001). HCC risk factors and clinic-pathological characteristics did not influence miR-483-5p expression. The combination of plasma miR-483-5p level and HCV status can significantly differentiate HCC cases from controls with an AUC of 0.908 (p<0.0001). The sensitivity and specificity were, respectively, 75.5% and 89.8%. These preliminary results suggest the importance of dysregulated circulating miR-483-5p as a potential HCC biomarker. Confirmation of aberrant expression of miR-483-5p in a large prospective HCC study will provide support for its application to HCC detection.
Project description:Background: Adrenal myelolipoma (AML) is a relatively common and invariably benign tumor composed of adipose tissue and hematopoietic elements. Due to the variable proportion of fat and hematopoietic elements, it is sometimes challenging to differentiate AML from adrenocortical carcinoma (ACC). MicroRNAs have been identified as promising biomarkers in many tumors, including adrenocortical neoplasms, but the microRNA expression of adrenal myelolipoma has not been investigated, yet. Aims: To perform a large scale microRNA expression profiling in adrenal myelolipoma, benign and malignant adrenocortical tumors to identify potential microRNA biomarkers. Methods: Next-generation sequencing (NGS) on 30 formalin-fixed paraffin-embedded archived tissue samples (discovery cohort: 10 adrenocortical adenoma (ACA), 10 ACC and 10 myelolipoma) was performed by Illumina MiSeq. Significantly differentially expressed microRNAs were validated by real-time RT-qPCR in an independent validation cohort comprised of 10 ACA, 10 myelolipoma and 9 ACC samples. Results: We have found relative overexpression of miR- 451a, miR-486-5p, miR-363-3p and miR-150-5p in myelolipoma compared to the other two tumor groups by NGS. For ACC, we have found up-regulation of miR-184, miR-483-5p, miR-431-5p and miR-183-5p compared to myelolipoma and ACA. Validation by RT-qPCR, confirmed significant overexpression of miR-451a, miR-486-5p and miR-150-5p in myelolipomas relative to ACA and ACC, whereas significant overexpression of miR-184 and miR-183-5p was confirmed in ACC relative to the other 2 groups. The overexpression of miR-483-5p has not turned out to be significant in ACC relative to myelolipomas in the validation cohort. Conclusions: Overexpressed miR-451a, miR-486-5p and miR-150-5p might be potential tissue markers of adrenal myelolipoma. The lack of significance in the expression of miR-483-5p between ACC and myelolipoma is remarkable, as miR-483-5p has been considered to be the best marker of adrenal malignancy to date.