Posttranscriptional regulation of BK channel splice variant stability by miR-9 underlies neuroadaptation to alcohol.
Posttranscriptional regulation of BK channel splice variant stability by miR-9 underlies neuroadaptation to alcohol.
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DOI:
10.1016/j.neuron.2008.05.032
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发表时间:
2008-07-31
期刊:
影响因子:
16.2
通讯作者:
Treistman SN
中科院分区:
文献类型:
--
作者:
Pietrzykowski AZ;Friesen RM;Martin GE;Puig SI;Nowak CL;Wynne PM;Siegelmann HT;Treistman SN
Tolerance represents a critical component of addiction. The large conductance calcium-and voltage-activated potassium channel (BK) is a well-established alcohol target, and an important element in behavioral and molecular alcohol tolerance. We tested whether microRNA, a newly-discovered class of gene expression regulators, plays a role in the development of tolerance. We show that in adult mammalian brain alcohol upregulates microRNA (miR-9) and mediates post-transcriptional reorganization in BK mRNA splice variants by miR-9-dependent destabilization of BK mRNAs containing 3’UTRs with a miR-9 Recognition Element (MRE). Different splice variants encode BK isoforms with different alcohol sensitivities. Computational modeling indicates that this miR-9 dependent mechanism contributes to alcohol tolerance. Moreover, this mechanism can be extended to regulation of additional miR-9 targets relevant to alcohol abuse. Our results describe a novel mechanism of multiplex regulation of stability of alternatively spliced mRNA by miRNA in drug adaptation and neuronal plasticity.
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