Title |
CCAT2, a novel noncoding RNA mapping to 8q24, underlies metastatic progression and chromosomal instability in colon cancer
|
---|---|
Published in |
Genome Research, June 2013
|
DOI | 10.1101/gr.152942.112 |
Pubmed ID | |
Authors |
Hui Ling, Riccardo Spizzo, Yaser Atlasi, Milena Nicoloso, Masayoshi Shimizu, Roxana S. Redis, Naohiro Nishida, Roberta Gafà, Jian Song, Zhiyi Guo, Cristina Ivan, Elisa Barbarotto, Ingrid De Vries, Xinna Zhang, Manuela Ferracin, Mike Churchman, Janneke F. van Galen, Berna H. Beverloo, Maryam Shariati, Franziska Haderk, Marcos R. Estecio, Guillermo Garcia-Manero, Gijs A. Patijn, David C. Gotley, Vikas Bhardwaj, Imad Shureiqi, Subrata Sen, Asha S. Multani, James Welsh, Ken Yamamoto, Itsuki Taniguchi, Min-Ae Song, Steven Gallinger, Graham Casey, Stephen N. Thibodeau, Loïc Le Marchand, Maarit Tiirikainen, Sendurai A. Mani, Wei Zhang, Ramana V. Davuluri, Koshi Mimori, Masaki Mori, Anieta M. Sieuwerts, John W.M. Martens, Ian Tomlinson, Massimo Negrini, Ioana Berindan-Neagoe, John A. Foekens, Stanley R. Hamilton, Giovanni Lanza, Scott Kopetz, Riccardo Fodde, George A. Calin |
Abstract |
The functional roles of SNPs within the 8q24 gene desert in the cancer phenotype are not yet well understood. Here, we report that CCAT2, a novel long noncoding RNA transcript (lncRNA) encompassing the rs6983267 SNP, is highly overexpressed in microsatellite-stable colorectal cancer and promotes tumor growth, metastasis, and chromosomal instability. We demonstrate that MYC, miR-17-5p, and miR-20a are up-regulated by CCAT2 through TCF7L2-mediated transcriptional regulation. We further identify the physical interaction between CCAT2 and TCF7L2 resulting in an enhancement of WNT signaling activity. We show that CCAT2 is itself a WNT downstream target, which suggests the existence of a feedback loop. Finally, we demonstrate that the SNP status affects CCAT2 expression and the risk allele G produces more CCAT2 transcript. Our results support a new mechanism of MYC and WNT regulation by the novel lncRNA CCAT2 in colorectal cancer pathogenesis, and provide an alternative explanation of the SNP-conferred cancer risk. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
United States | 8 | 53% |
Peru | 1 | 7% |
United Kingdom | 1 | 7% |
France | 1 | 7% |
Unknown | 4 | 27% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Scientists | 9 | 60% |
Members of the public | 5 | 33% |
Science communicators (journalists, bloggers, editors) | 1 | 7% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Netherlands | 1 | <1% |
Hong Kong | 1 | <1% |
Austria | 1 | <1% |
United Kingdom | 1 | <1% |
Belgium | 1 | <1% |
Spain | 1 | <1% |
United States | 1 | <1% |
Unknown | 254 | 97% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 50 | 19% |
Researcher | 47 | 18% |
Student > Master | 47 | 18% |
Student > Doctoral Student | 16 | 6% |
Student > Bachelor | 16 | 6% |
Other | 38 | 15% |
Unknown | 47 | 18% |
Readers by discipline | Count | As % |
---|---|---|
Biochemistry, Genetics and Molecular Biology | 80 | 31% |
Agricultural and Biological Sciences | 71 | 27% |
Medicine and Dentistry | 29 | 11% |
Business, Management and Accounting | 2 | <1% |
Chemistry | 2 | <1% |
Other | 19 | 7% |
Unknown | 58 | 22% |