期刊
RNA BIOLOGY
卷 8, 期 4, 页码 557-564出版社
TAYLOR & FRANCIS INC
DOI: 10.4161/rna.8.4.16019
关键词
cancer cells; context-dependent; microRNA-9; neural progenitor cells; proliferation; migration; 3 ' UTRs
资金
- National Institutes of Health [RO1 NS066586]
The functional significance of microRNA-9 (miR-9) during evolution is evidenced by its conservation at the nucleotide level from flies to humans but not its diverse expression patterns. Recent studies in several model systems reveal that miR-9 can regulate neurogenesis through its actions in neural or non-neural cell lineages. In vertebrates, miR-9 exerts diverse cell-autonomous effects on the proliferation, migration and differentiation of neural progenitor cells by modulating different mRNA targets. In some developmental contexts, miR-9 suppresses apoptosis and is misregulated in several types of cancer cells, influencing proliferation or metastasis formation. Moreover, downregulation of miR-9 in postmitotic neurons is also implicated in some neurodegenerative diseases. Thus, miR-9 is emerging as an important regulator in development and disease through its ability to modulate different targets in a manner dependent on the developmental stage and the cellular context.
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