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Transcription profiling by array of prostate cancer cell line PC-3 ectopically expressing miR-34c to identify genes regulated by this microRNA

ABSTRACT: In this study we set out to characterize the mechanisms by which miR-34c deregulation contribute to PCa progression. The genes regulated by miR-34c in the prostate cancer cell line PC3 were identified by microarray analyses, and the top biofunctional pathways enriched for identified genes were found to be cell death, cell cycle, cellular growth, and cellular movement. One of the identified targets was MET, a receptor protein tyrosine kinase activated by hepatocyte growth factor, that is crucial for metastatic progression. see above A total of 6 samples. Where 3 are ectopic expression of miR-205 and 3 are ectopic expression of a scramble mimic.

ORGANISM(S): Homo sapiens

SUBMITTER: Yvonne Ceder

PROVIDER: E-GEOD-41322 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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The tumour suppressor miR-34c targets MET in prostate cancer cells.

Hagman Z Z Haflidadottir B S BS Ansari M M Persson M M Bjartell A A Edsjö A A Ceder Y Y

British journal of cancer 20130806 5

<h4>Background</h4>The microRNA, miR-34c, is a well-established regulator of tumour suppression. It is downregulated in most forms of cancers and inhibits malignant growth by repressing genes involved in processes such as proliferation, anti-apoptosis, stemness, and migration. We have previously reported downregulation and tumour suppressive properties for miR-34c in prostate cancer (PCa).<h4>Methods</h4>In this study, we set out to further characterize the mechanisms by which miR-34c deregulati ...[more]

PMID: 23922103

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Identification of miR-34c targets

Project description:In this study we set out to characterize the mechanisms by which miR-34c deregulation contribute to PCa progression. The genes regulated by miR-34c in the prostate cancer cell line PC3 were identified by microarray analyses, and the top biofunctional pathways enriched for identified genes were found to be cell death, cell cycle, cellular growth, and cellular movement. One of the identified targets was MET, a receptor protein tyrosine kinase activated by hepatocyte growth factor, that is crucial for metastatic progression. see above

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Deep sequencing of human naive CD4 T cells identifies miR-34c-5p as a novel regulator of T cell activation and HIV replication

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Molecular Mechanisms Associated with Primary Open-angle Glaucoma with MicroRNA Microarray Data

Project description:This study aimed to investigate the molecular mechanism responsible for primary open-angle glaucoma (POAG) progression. We analyzed microRNAs (miRNAs) expression profiling in aqueous humor (AH) of both POAG patients and normal controls, using a microarray-based approach. Subsequently, differentially expressed miRNAs (DEmiRNAs) were identified using Bayes moderated t-test. Next, DEmiRNAs target genes were predicted based on miRNA databases, followed by GO analysis and pathway analysis using DAVID. Furthermore, OAG-related genes analysis for target genes was carried out using CTD database, respectively. Finally, verification of DEmiRNAs expression levels was performed by RT-qPCR. A total of 40 significant DEmiRNAs were identified between control and POAG groups, including 24 up-regulated miRNAs and 16 down-regulated miRNAs. Further, the target genes of hsa-miR-206, including BMP2, SMAD4, ID2, and TNF, were mainly enriched in transforming growth factor-β (TGF-β) signaling pathway. While, target genes of hsa-miR-184, hsa-miR-34c-5p, hsa-miR-7-2-3p and hsa-miR-20b-3p, including BCL2, EPHB2, VEGFA, COL4A1, APC, and TGFBR1, were enriched in eye development. Moreover, FNDC3B, CAV2 and VEGF, target genes of hsa-miR-206 or hsa-miR-34c-5p, were the OAG-related genes. Ultimately, RT-qPCR analysis confirmed that mRNA levels of hsa-miR-206, hsa-miR-7-2-3p, and hsa-miR-20b-3p were increased, while those of hsa-miR-184 and hsa-miR-34c-5p were decreased in POAG compared with normal groups (P < 0.05). Hsa-miR-206, hsa-miR-184, hsa-miR-34c-5p, hsa-miR-7-2-3p and hsa-miR-20b-3p might play a significant role in the pathogenesis of POAG and hsa-miR-206 might be associated with the development of POAG by regulating TGF-β signaling pathway. These results might provide insight toward a better understanding of the pathogenesis of POAG.

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