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The notch and TGF-β signaling pathways contribute to the aggressiveness of clear cell renal cell carcinoma.
Dept. of Laboratory Medicine, Center for Molecular Pathology, Lund University, University Hospital MAS, Malmö, Sweden.
Dept. of Laboratory Medicine, Center for Molecular Pathology, Lund University, University Hospital MAS, Malmö, Sweden.
Dept. of Laboratory Medicine, Center for Molecular Pathology, Lund University, University Hospital MAS, Malmö, Sweden.
Dept. of Laboratory Medicine, Center for Molecular Pathology, Lund University, University Hospital MAS, Malmö, Sweden.
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2011 (English)In: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 6, no 8, e23057- p.Article in journal (Refereed) Published
Abstract [en]

BACKGROUND

Despite recent progress, therapy for metastatic clear cell renal cell carcinoma (CCRCC) is still inadequate. Dysregulated Notch signaling in CCRCC contributes to tumor growth, but the full spectrum of downstream processes regulated by Notch in this tumor form is unknown.

METHODOLOGY/PRINCIPAL FINDINGS

We show that inhibition of endogenous Notch signaling modulates TGF-β dependent gene regulation in CCRCC cells. Analysis of gene expression data representing 176 CCRCCs showed that elevated TGF-β pathway activity correlated significantly with shortened disease specific survival (log-rank test, p = 0.006) and patients with metastatic disease showed a significantly elevated TGF-β signaling activity (two-sided Student's t-test, p = 0.044). Inhibition of Notch signaling led to attenuation of both basal and TGF-β1 induced TGF-β signaling in CCRCC cells, including an extensive set of genes known to be involved in migration and invasion. Functional analyses revealed that Notch inhibition decreased the migratory and invasive capacity of CCRCC cells.

CONCLUSION

An extensive cross-talk between the Notch and TGF-β signaling cascades is present in CCRCC and the functional properties of these two pathways are associated with the aggressiveness of this disease.

Place, publisher, year, edition, pages
2011. Vol. 6, no 8, e23057- p.
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-161148DOI: 10.1371/journal.pone.0023057ISI: 000293558900053PubMedID: 21826227OAI: oai:DiVA.org:uu-161148DiVA: diva2:454679
Available from: 2011-11-08 Created: 2011-11-08 Last updated: 2017-12-08Bibliographically approved

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