期刊
NUCLEIC ACIDS RESEARCH
卷 36, 期 16, 页码 5232-5241出版社
OXFORD UNIV PRESS
DOI: 10.1093/nar/gkn513
关键词
-
资金
- National Institutes of Health, USA [AI059267]
MicroRNAs (miRNAs) are short noncoding RNAs that down-regulate gene expression by silencing specific target mRNAs. While many miRNAs are transcribed from their own genes, nearly half map within introns of host genes, the significance of which remains unclear. We report that transcriptional activation of apoptosis-associated tyrosine kinase (AATK), essential for neuronal differentiation, also generates miR-338 from an AATK gene intron that silences a family of mRNAs whose protein products are negative regulators of neuronal differentiation. We conclude that an intronic miRNA, transcribed together with the host gene mRNA, may serve the interest of its host gene by silencing a cohort of genes that are functionally antagonistic to the host gene itself.
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