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Cited by 699

The DOI matches its Crossref record; 33 of the 33 references it cites were found in a registry or an index.

miR-221 overexpression contributes to liver tumorigenesis

Open access
Pineau, Pascal, Volinia, Stefano, McJunkin, Katherine, Marchio, Agnès, Battiston, Carlo, Terris, Benoît, Mazzaferro, Vincenzo, Lowe, Scott W., Croce, Carlo M., Dejean, Anne·2010·Proceedings of the National Academy of Sciences

Abstract

MicroRNA (miRNAs) are negative regulators of gene expression and can function as tumor suppressors or oncogenes. Expression patterns of miRNAs and their role in the pathogenesis of hepatocellular carcinoma (HCC) are still poorly understood. We profiled miRNA expression in tissue samples (104 HCC, 90 adjacent cirrhotic livers, 21 normal livers) as well as in 35 HCC cell lines. A set of 12 miRNAs (including miR-21, miR-221/222, miR-34a, miR-519a, miR-93, miR-96, and let-7c) was linked to disease progression from normal liver through cirrhosis to full-blown HCC. miR-221/222, the most up-regulated miRNAs in tumor samples, are shown to target the CDK inhibitor p27 and to enhance cell growth in vitro. Conversely, these activities can be efficiently inhibited by an antagomiR specific for miR-221. In addition, we show, using a mouse model of liver cancer, that miR-221 overexpression stimulates growth of tumorigenic murine hepatic progenitor cells. Finally, we identified DNA damage-inducible transcript 4 (DDIT4), a modulator of mTOR pathway, as a bona fide target of miR-221. Taken together, these data reveal an important contribution for miR-221 in hepatocarcinogenesis and suggest a role for DDIT4 dysregulation in this process. Thus, the use of synthetic inhibitors of miR-221 may prove to be a promising approach to liver cancer treatment.

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Metadata

Authors
Pineau, P., Volinia, S., McJunkin, K., Marchio, A., Battiston, C., Terris, B., Mazzaferro, V., Lowe, S. W., Croce, C. M., & Dejean, A.
Venue
Proceedings of the National Academy of Sciences
Published
2009-12-29
Volume
107
Issue
1
Pages
264-269
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1987851658
Cited by
699
References
33
FWCI
15.73
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: miR-221 overexpression contributes to liver tumorigenesis. https://app.cochat.ai/papers/10.1073/pnas.0907904107
The paper
Pineau, P., Volinia, S., McJunkin, K., Marchio, A., Battiston, C., Terris, B., Mazzaferro, V., Lowe, S. W., Croce, C. M., & Dejean, A. (2010). miR-221 overexpression contributes to liver tumorigenesis. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0907904107

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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