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Epigenetic regulation of OAS2 shows disease-specific DNA methylation profiles at individual CpG sites
Umeå universitet, Medicinska fakulteten, Institutionen för medicinsk biovetenskap, Patologi.
Umeå universitet, Medicinska fakulteten, Institutionen för medicinsk biovetenskap, Patologi.
Umeå universitet, Medicinska fakulteten, Institutionen för medicinsk biovetenskap, Patologi. RECAMO, Masaryk Memorial Cancer Institute, Brno, Czech Republic; Institut de Génétique Moléculaire, Université Paris 7, Hôpital St. Louis, Paris, France.
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2016 (Engelska)Ingår i: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 6, artikel-id 32579Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Epigenetic modifications are essential regulators of biological processes. Decreased DNA methylation of OAS2 (2'-5'-Oligoadenylate Synthetase 2), encoding an antiviral protein, has been seen in psoriasis. To provide further insight into the epigenetic regulation of OAS2, we performed pyrosequencing to detect OAS2 DNA methylation status at 11 promoter and first exon located CpG sites in psoriasis (n = 12) and two common subtypes of squamous cell carcinoma (SCC) of the head and neck: tongue (n = 12) and tonsillar (n = 11). Compared to corresponding controls, a general hypomethylation was seen in psoriasis. In tongue and tonsillar SCC, hypomethylation was found at only two CpG sites, the same two sites that were least demethylated in psoriasis. Despite differences in the specific residues targeted for methylation/demethylation, OAS2 expression was upregulated in all conditions and correlations between methylation and expression were seen in psoriasis and tongue SCC. Distinctive methylation status at four successively located CpG sites within a genomic area of 63 bp reveals a delicately integrated epigenetic program and indicates that detailed analysis of individual CpGs provides additional information into the mechanisms of epigenetic regulation in specific disease states. Methylation analyses as clinical biomarkers need to be tailored according to disease-specific sites.

Ort, förlag, år, upplaga, sidor
2016. Vol. 6, artikel-id 32579
Nyckelord [en]
Tympanic membrane, myringoplasty, perforation, Gelfoam®
Nationell ämneskategori
Medicinsk genetik
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URN: urn:nbn:se:umu:diva-125822DOI: 10.1038/srep32579ISI: 000391984400001PubMedID: 27572959OAI: oai:DiVA.org:umu-125822DiVA, id: diva2:1076379
Tillgänglig från: 2017-02-22 Skapad: 2017-02-22 Senast uppdaterad: 2018-06-09Bibliografiskt granskad

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Gu, XiaolianBoldrup, LindaFåhraeus, RobinNylander, ElisabetLoizou, ChristosOlofsson, KatarinaNorberg-Spaak, LenaGärskog, OlaNylander, Karin
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