Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/97172
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Type: | Journal article |
Title: | p53 represses the oncogenic Sno-MiR-28 derived from a SnoRNA |
Author: | Yu, F. Bracken, C. Pillman, K. Lawrence, D. Goodall, G. Callen, D. Neilsen, P. |
Citation: | PLoS One, 2015; 10(6):e0129190-1-e0129190-20 |
Publisher: | Public Library of Science |
Issue Date: | 2015 |
ISSN: | 1932-6203 1932-6203 |
Editor: | Pfeffer, S. |
Statement of Responsibility: | Feng Yu, Cameron P. Bracken, Katherine A. Pillman, David M. Lawrence, Gregory J. Goodall, David F. Callen, Paul M. Neilsen |
Abstract: | p53 is a master tumour repressor that participates in vast regulatory networks, including feedback loops involving microRNAs (miRNAs) that regulate p53 and that themselves are direct p53 transcriptional targets. We show here that a group of polycistronic miRNA-like non-coding RNAs derived from small nucleolar RNAs (sno-miRNAs) are transcriptionally repressed by p53 through their host gene, SNHG1. The most abundant of these, sno-miR-28, directly targets the p53-stabilizing gene, TAF9B. Collectively, p53, SNHG1, sno-miR-28 and TAF9B form a regulatory loop which affects p53 stability and downstream p53-regulated pathways. In addition, SNHG1, SNORD28 and sno-miR-28 are all significantly upregulated in breast tumours and the overexpression of sno-miR-28 promotes breast epithelial cell proliferation. This research has broadened our knowledge of the crosstalk between small non-coding RNA pathways and roles of sno-miRNAs in p53 regulation. |
Keywords: | Cell Line, Tumor HCT116 Cells Humans Breast Neoplasms TATA-Binding Protein Associated Factors Transcription Factor TFIID MicroRNAs RNA, Small Nucleolar Cell Proliferation Gene Expression Regulation, Neoplastic Female Tumor Suppressor Protein p53 |
Rights: | © 2015 Yu et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited |
DOI: | 10.1371/journal.pone.0129190 |
Grant ID: | http://purl.org/au-research/grants/nhmrc/44112162 http://purl.org/au-research/grants/nhmrc/1034633 |
Published version: | http://dx.doi.org/10.1371/journal.pone.0129190 |
Appears in Collections: | Aurora harvest 7 Medicine publications |
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hdl_97172.pdf | Published version | 2.22 MB | Adobe PDF | View/Open |
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