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Selective Blockade of MicroRNA Processing by Lin28

Open access
Viswanathan, Srinivas R., Daley, George Q., Gregory, Richard I.·2008·Science

Abstract

MicroRNAs (miRNAs) play critical roles in development, and dysregulation of miRNA expression has been observed in human malignancies. Recent evidence suggests that the processing of several primary miRNA transcripts (pri-miRNAs) is blocked posttranscriptionally in embryonic stem cells, embryonal carcinoma cells, and primary tumors. Here we show that Lin28, a developmentally regulated RNA binding protein, selectively blocks the processing of pri-let-7 miRNAs in embryonic cells. Using in vitro and in vivo studies, we found that Lin28 is necessary and sufficient for blocking Microprocessor-mediated cleavage of pri-let-7 miRNAs. Our results identify Lin28 as a negative regulator of miRNA biogenesis and suggest that Lin28 may play a central role in blocking miRNA-mediated differentiation in stem cells and in certain cancers.

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Metadata

Authors
Viswanathan, S. R., Daley, G. Q., & Gregory, R. I.
Venue
Science
Published
2008-04-04
Volume
320
Issue
5872
Pages
97-100
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W1985140771
Cited by
1,437
References
3
FWCI
46.29
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Selective Blockade of MicroRNA Processing by Lin28. https://app.cochat.ai/papers/10.1126/science.1154040
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Viswanathan, S. R., Daley, G. Q., & Gregory, R. I. (2008). Selective Blockade of MicroRNA Processing by Lin28. Science. https://doi.org/10.1126/science.1154040

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