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Subsite-based alterations in miR-21, miR-125b, and miR-203 in squamous cell carcinoma of the oral cavity and correlation to important target proteins.
Umeå universitet, Medicinska fakulteten, Institutionen för medicinsk biovetenskap, Patologi.
Tayside Tissue Bank Division of Medical Sciences, University of Dundee, Ninewells Hospital and Medical School, Dundee DD1 9SY, UK.
Umeå universitet, Medicinska fakulteten, Institutionen för klinisk vetenskap, Öron- näs- och halssjukdomar.
Umeå universitet, Medicinska fakulteten, Institutionen för klinisk vetenskap, Öron- näs- och halssjukdomar.
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2012 (engelsk)Inngår i: Journal of Carcinogenesis, ISSN 0974-6773, E-ISSN 1477-3163, Vol. 11, s. 18-Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

BACKGROUND: MicroRNAs (miRNAs) are small noncoding RNA molecules with an essential role in regulation of gene expression. miRNA expression profiles differ between tumor and normal control tissue in many types of cancers and miRNA profiling is seen as a promising field for finding new diagnostic and prognostic tools.

MATERIALS AND METHODS: In this study, we have analyzed expression of three miRNAs, miR-21, miR-125b, and miR-203, and their potential target proteins p53 and p63, known to be deregulated in squamous cell carcinoma of the head and neck (SCCHN), in two distinct and one mixed subsite in squamous cell carcinoma in the oral cavity.

RESULTS: We demonstrate that levels of miRNA differ between tumors of different subsites with tongue tumors showing significant deregulation of all three miRNAs, whereas gingival tumors only showed significant downregulation of miR-125b and the mixed group of tumors in tongue/floor of the mouth showed significant deregulation of miR-21 and miR-125b. In the whole group of oral squamous cell carcinoma (SCC), a significant negative correlation was seen between miR-125b and p53 as well as a significant correlation between TP53 mutation status and miR-125b.

CONCLUSION: The present data once again emphasize the need to take subsite into consideration when analyzing oral SCC and clearly show that data from in vitro studies cannot be transferred directly to the in vivo situation.

sted, utgiver, år, opplag, sider
National Center for Biotechnology Information, USA , 2012. Vol. 11, s. 18-
Emneord [en]
MicroRNA, oral squamous cell carcinoma, p53, p63
HSV kategori
Identifikatorer
URN: urn:nbn:se:umu:diva-71540DOI: 10.4103/1477-3163.104007PubMedID: 23230394OAI: oai:DiVA.org:umu-71540DiVA, id: diva2:624732
Tilgjengelig fra: 2013-06-03 Laget: 2013-06-03 Sist oppdatert: 2018-06-08bibliografisk kontrollert

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Boldrup, LindaWahlgren, MagnusLaurell, GöranNylander, Karin

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