Journal
INTERNATIONAL JOURNAL OF MOLECULAR MEDICINE
Volume 25, Issue 4, Pages 565-571Publisher
SPANDIDOS PUBL LTD
DOI: 10.3892/ijmm_00000378
Keywords
microRNA; hsa-miR-34c; apoptosis; proliferation; invasion; laryngeal carcinoma
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MicroRNAs (miRNAs) are small noncoding, RNA molecules that modulate gene expression at the post-transcriptional level A growing number Of studies has shown that more and more miRNAs are aberrantly expressed and involved in the pathogenesis of several types of cancers Here, we report that the down-regulated hsa-miR-34c was also involved in oncogenesis of laryngeal carcinoma. Our studies indicated that hsa-miR-34c functioned as a tumor suppressor which inhibited growth and invasion of human laryngeal carcinoma cells. Furthermore, in our study, an Inverse relationship between (lie expression of hsa-miR-34c and C-Met Was Identified in 10 paired fresh samples from tumor tissues and adjacent normal tissues. Infection of hsa-miR-34c mediated by lentivirus suppressed the expression of c-Met directly In addition, introduction of c-Met cDNA lacking 3'-UTR largely abrogated hsa-miR-34c-induced Cell growth and Invasion inhibition These findings suggest aberrantly down-regulated hsa-miR-34c is a critical factor that contributes to malignancy in human laryngeal carcinoma by a mechanism involving targeting of c-Met
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