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Differentiation-Promoting Culture of Competent and Noncompetent Keratinocytes Identifies Biomarkers for Head and Neck Cancer
Karolinska Institute.
Karolinska Institute.
Karolinska Institute.
Karolinska Institute.
Vise andre og tillknytning
2012 (engelsk)Inngår i: American Journal of Pathology, ISSN 0002-9440, E-ISSN 1525-2191, Vol. 180, nr 2, s. 457-472Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Aberrant contact-inhibited proliferation and differentiation induction couple with tumor severity, albeit with an imprecise association with prognosis. Assessment of contact inhibition and differentiation-promoting culture in this study of normal and immortalized oral keratinocytes (NOK and SVpgC2a, respectively) demonstrated elevated cloning ability and saturation density in the immortalized versus normal state, including consistent absence of differentiated morphological features. Transcriptomic analysis implicated 48 gene ontology categories, 8 molecular networks, and 10 key regulator genes in confluency-induced differentiation of NOK, all of which remained nonregulated in SVpgC2a. The SVpgC2a versus NOK transcriptome enriched 52 gene ontology categories altogether, 18 molecular networks, and 39 key regulator genes, several of which were associated with epithelial-mesenchymal transition. Assessment of the previously described gene sets relative to training data sets of head and neck squamous cell carcinoma samples, one including data on tumor differentiation and patient outcome and one present in the Human Gene Expression Map, identified four genes with association to poor survival (COX7A1, MFAP5, MPDU1, and POLD1). This gene set predicted poor outcome in an independent data set of 71 head and neck squamous cell carcinomas. The present study defines, for the first time to our knowledge, the broad gene spectrum that couples to induction, and loss, of oral keratinocyte differentiation. Bioinformatics assessments of the results relative to clinical data generated novel differentiation-related tumor biomarkers relevant to patient outcome.

sted, utgiver, år, opplag, sider
Elsevier , 2012. Vol. 180, nr 2, s. 457-472
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Identifikatorer
URN: urn:nbn:se:liu:diva-75468DOI: 10.1016/j.ajpath.2011.10.016ISI: 000299918800004OAI: oai:DiVA.org:liu-75468DiVA, id: diva2:507084
Merknad
Funding Agencies|Swedish Cancer and Allergy Fund||Swedish Research Council||Swedish Cancer Foundation||Swedish Fund for Research without Animal Experiments||Karolinska Institutet||Tilgjengelig fra: 2012-03-02 Laget: 2012-03-02 Sist oppdatert: 2017-12-07

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