Article ; Online: Non-canonical targets play an important role in microRNA stability control mechanisms.
2017 Volume 50, Issue 4, Page(s) 158–159
Abstract: ... on these results, we propose that non-canonical targets may play an important regulatory role in controlling ... remain largely unknown. To explore the molecular mechanisms of how targets affect the stability of miRNAs ... to seedless, non-canonical targets. We showed that miRNAs are destabilized at their 3' ends during ...
| Abstract | MicroRNAs (miRNAs) regulate gene expression by guiding the Argonaute (Ago)-containing RNA-induced silencing complex (RISC) to specific target mRNA molecules. It is well established that miRNAs are stabilized by Ago proteins, but the molecular features that trigger miRNA destabilization from Ago proteins remain largely unknown. To explore the molecular mechanisms of how targets affect the stability of miRNAs in human Ago (hAgo) proteins, we employed an in vitro system that consisted of a minimal hAgo2-RISC in HEK293T cell lysates. Surprisingly, we found that miRNAs are drastically destabilized by binding to seedless, non-canonical targets. We showed that miRNAs are destabilized at their 3' ends during this process, which is largely attributed to the conformational flexibility of the L1-PAZ domain. Based on these results, we propose that non-canonical targets may play an important regulatory role in controlling the stability of miRNAs, instead of being regulated by miRNAs. [BMB Reports 2017; 50(4): 158-159]. |
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| MeSH term(s) | Argonaute Proteins/genetics ; Argonaute Proteins/metabolism ; Chromatin Immunoprecipitation ; HEK293 Cells ; Humans ; MicroRNAs/metabolism ; RNA Stability/physiology ; RNA-Induced Silencing Complex/metabolism | |||||
| Chemical Substances | Argonaute Proteins ; MicroRNAs ; RNA-Induced Silencing Complex | |||||
| Language | English | |||||
| Publishing date | 2017-02-22 | |||||
| Publishing country | Korea (South) | |||||
| Document type | Journal Article | |||||
| ZDB-ID | 2410389-5 | |||||
| ISSN | 1976-670X ; 1976-6696 | |||||
| ISSN (online) | 1976-670X | |||||
| ISSN | 1976-6696 | |||||
| DOI | 10.5483/bmbrep.2017.50.4.029 | |||||
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| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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