Gene Set: GABRIELY_MIR21_TARGETS

Standard name GABRIELY_MIR21_TARGETS
Systematic name M2196
Brief description Genes significantly de-regulated (p < 0.05) by MIR21 [GeneID=406991] in A172 cells (glioma).
Full description or abstract Substantial data indicate that microRNA 21 (miR-21) is significantly elevated in glioblastoma (GBM) and in many other tumors of various origins. This microRNA has been implicated in various aspects of carcinogenesis, including cellular proliferation, apoptosis, and migration. We demonstrate that miR-21 regulates multiple genes associated with glioma cell apoptosis, migration, and invasiveness, including the RECK and TIMP3 genes, which are suppressors of malignancy and inhibitors of matrix metalloproteinases (MMPs). Specific inhibition of miR-21 with antisense oligonucleotides leads to elevated levels of RECK and TIMP3 and therefore reduces MMP activities in vitro and in a human model of gliomas in nude mice. Moreover, downregulation of miR-21 in glioma cells leads to decreases of their migratory and invasion abilities. Our data suggest that miR-21 contributes to glioma malignancy by downregulation of MMP inhibitors, which leads to activation of MMPs, thus promoting invasiveness of cancer cells. Our results also indicate that inhibition of a single oncomir, like miR-21, with specific antisense molecules can provide a novel therapeutic approach for physiological modulation of multiple proteins whose expression is deregulated in cancer.
Collection C2: curated gene sets
      CGP: chemical and genetic perturbations
Source publication Pubmed 18591254   Authors: Gabriely G,Wurdinger T,Kesari S,Esau CC,Burchard J,Linsley PS,Krichevsky AM
Exact source Table 1S: mean p-value < 0.05
Related gene sets (show 17 gene sets from the same authors)
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Organism Homo sapiens
Contributed by Arthur Liberzon (MSigDB Team)
Source platform HUMAN_GENE_SYMBOL
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Human tissue compendium (Novartis)
Global Cancer Map (Broad Institute)
NCI-60 cell lines (National Cancer Institute)
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Version history 3.1: First introduced

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