Cited by 712MicroRNA in disease regulationRNA and protein synthesis mechanismsRNA Research and Splicing

Ribosome Profiling Shows That miR-430 Reduces Translation Before Causing mRNA Decay in Zebrafish

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Bazzini, Ariel A., Lee, Miler T., Giraldez, Antonio J.·2012·Science

Abstract

Translation Block: MicroRNAs (miRNAs) are small, noncoding RNA genes that are found in the genomes of most eukaryotes, where they play an important role in the regulation of gene expression. Although whether gene activity is repressed by blocking translation of messenger RNA (mRNA) targets, or by promoting their deadenylation and then degradation, has been open to debate. Bazzini et al. (p. 233 , published online 15 March) and Djuranovic et al. (p. 237 ) looked at early points in the repression reaction in the zebrafish embryo or in Drosophila tissue culture cells, respectively, and found that translation was blocked before target mRNAs were significantly deadenylated and degraded. Thus, miRNAs appear to interfere with the initiation step of translation.

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  • Global measurements indicate that miRNA targeting causes mostly mRNA destabilization, with translational repression comprising a detectable but minor component of overall repression.

    “Global measurements indicate that miRNA targeting causes mostly mRNA destabilization, with translational repression comprising a detectable but minor component of the overall repression33–36.”
  • The only known exception to the pattern of miRNA targeting causing mostly mRNA destabilization is the transient translational repression observed in early zebrafish embryos.

    “The only known exception is the transient translational repression observed in early zebrafish embryos36.”
  • At 4 hpf, miR-430 targeting causes mostly translational repression with very little mRNA destabilization, whereas by 6 hpf the outcome shifts to mostly mRNA destabilization.

    “At 4 hpf miR-430 targeting causes mostly translational repression with very little mRNA destabilization, whereas by 6 hpf the outcome shifts to mostly mRNA destabilization36.”

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Authors
Bazzini, A. A., Lee, M. T., & Giraldez, A. J.
Affiliations
  • Yale University (US)
  • Department of Genetics, Yale University School of Medicine, New Haven, CT 06510, USA.
Corresponding author
  • Bazzini, Ariel A.
  • Lee, Miler T.
Venue
Science
Published
2012-04-13
Volume
336
Issue
6078
Pages
233-237
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2026570758
Cited by
709
References
30
Citations by year
2026: 11 · 2025: 22 · 2024: 30 · 2023: 19 · 2022: 31 · 2021: 43 · 2020: 33 · 2019: 34 · 2018: 67 · 2017: 70 · 2016: 59 · 2015: 54 · 2014: 81 · 2013: 97 · 2012: 56
FWCI
30.58
Type
journal article
Language
en
Open access
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute of General Medical Sciences (R01GM081602, R01GM102251)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (F32HD071697)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › MicroRNA in disease regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
Keywords
miR-430, microRNA, protein synthesis inhibition, mRNA degradation, deadenylation, ribosome profiling, ribosome occupancy, translation initiation, Dicer, zebrafish embryos, embryonic development
MeSH terms
Animals, Embryo, Nonmammalian, Peptide Chain Initiation, Translational, Poly A, Ribosomes, RNA, Messenger, Protein Biosynthesis, Zebrafish, Gene Expression Regulation, Developmental, 3' Untranslated Regions, RNA Stability, Zebrafish Proteins, MicroRNAs, Ribonuclease III, Embryonic Development

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