MicroRNA silencing through RISC recruitment of eIF6

Thimmaiah P. Chendrimada, Kenneth J. Finn, Xinjun Ji, David Baillat, Richard I. Gregory, Stephen A. Liebhaber, Amy E. Pasquinelli, Ramin Shiekhattar

Research output: Contribution to journalArticle

340 Citations (Scopus)

Abstract

MicroRNAs (miRNAs) are a class of small RNAs that act post- transcriptionally to regulate messenger RNA stability and translation. To elucidate how miRNAs mediate their repressive effects, we performed biochemical and functional assays to identify new factors in the miRNA pathway. Here we show that human RISC (RNA-induced silencing complex) associates with a multiprotein complex containing MOV10-which is the homologue of Drosophila translational repressor Armitage-and proteins of the 60S ribosome subunit. Notably, this complex contains the anti-association factor eIF6 (also called ITGB4BP or p27BBP), a ribosome inhibitory protein known to prevent productive assembly of the 80S ribosome. Depletion of eIF6 in human cells specifically abrogates miRNA-mediated regulation of target protein and mRNA levels. Similarly, depletion of eIF6 in Caenorhabditis elegans diminishes lin-4 miRNA-mediated repression of the endogenous LIN-14 and LIN-28 target protein and mRNA levels. These results uncover an evolutionarily conserved function of the ribosome anti-association factor eIF6 in miRNA-mediated post-transcriptional silencing.

Original languageEnglish (US)
Pages (from-to)823-828
Number of pages6
JournalNature
Volume447
Issue number7146
DOIs
StatePublished - Jun 14 2007
Externally publishedYes

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RNA-Induced Silencing Complex
MicroRNAs
Ribosomes
Messenger RNA
Eukaryotic Large Ribosome Subunits
Repressor Proteins
Multiprotein Complexes
Proteins
RNA Stability
Caenorhabditis elegans
Drosophila
RNA

ASJC Scopus subject areas

  • General

Cite this

Chendrimada, T. P., Finn, K. J., Ji, X., Baillat, D., Gregory, R. I., Liebhaber, S. A., ... Shiekhattar, R. (2007). MicroRNA silencing through RISC recruitment of eIF6. Nature, 447(7146), 823-828. https://doi.org/10.1038/nature05841

MicroRNA silencing through RISC recruitment of eIF6. / Chendrimada, Thimmaiah P.; Finn, Kenneth J.; Ji, Xinjun; Baillat, David; Gregory, Richard I.; Liebhaber, Stephen A.; Pasquinelli, Amy E.; Shiekhattar, Ramin.

In: Nature, Vol. 447, No. 7146, 14.06.2007, p. 823-828.

Research output: Contribution to journalArticle

Chendrimada, TP, Finn, KJ, Ji, X, Baillat, D, Gregory, RI, Liebhaber, SA, Pasquinelli, AE & Shiekhattar, R 2007, 'MicroRNA silencing through RISC recruitment of eIF6', Nature, vol. 447, no. 7146, pp. 823-828. https://doi.org/10.1038/nature05841
Chendrimada TP, Finn KJ, Ji X, Baillat D, Gregory RI, Liebhaber SA et al. MicroRNA silencing through RISC recruitment of eIF6. Nature. 2007 Jun 14;447(7146):823-828. https://doi.org/10.1038/nature05841
Chendrimada, Thimmaiah P. ; Finn, Kenneth J. ; Ji, Xinjun ; Baillat, David ; Gregory, Richard I. ; Liebhaber, Stephen A. ; Pasquinelli, Amy E. ; Shiekhattar, Ramin. / MicroRNA silencing through RISC recruitment of eIF6. In: Nature. 2007 ; Vol. 447, No. 7146. pp. 823-828.
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