Cyclooxygenase 2 (COX2) and Peroxisome Proliferator-Activated Receptor Gamma (PPARG) Are Stage-Dependent Prognostic Markers of Malignant Melanoma

Meyer, Stefanie and Vogt, Thomas and Landthaler, Michael and Berand, Anna and Reichle, Albrecht and Bataille, Frauke and Marx, Andreas H. and Menz, Anne and Hartmann, Arndt and Kunz-Schughart, Leoni A. and Wild, Peter J. (2010) Cyclooxygenase 2 (COX2) and Peroxisome Proliferator-Activated Receptor Gamma (PPARG) Are Stage-Dependent Prognostic Markers of Malignant Melanoma. PPAR RESEARCH: 848645. ISSN 1687-4757, 1687-4765

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Abstract

Using tissue microarrays (TMAs) we studied COX2/PPARG immunoreactivity in a broad spectrum of tumors focussing on clinicopathological correlations and the outcome of patients with malignant melanoma (MM). TMA-1 contained normal and tumor tissues (n = 3448) from 47 organs including skin neoplasms (n = 323); TMA-2 88 primary MM, 101 metastases, and 161 benign nevi. Based on a biomodulatory approach combining COX/PPAR-targeting with metronomic low-dose chemotherapy metastases of 36 patients participating in a randomized trial with metastatic (stage IV) melanoma were investigated using TMA-3. COX2/PPARG immunoreactivity significantly increased from nevi to primary MM and metastases; COX2 positivity was associated with advanced Clark levels and shorter recurrence-free survival. Patients with PPARG-positive metastases and biomodulatory metronomic chemotherapy alone or combined with COX2/PPARG-targeting showed a significantly prolonged progression-free survival. Regarding primary MM, COX2 expression indicates an increased risk of tumor recurrence. In metastatic MM, PPARG expression may be a predicitive marker for response to biomodulatory stroma-targeted therapy.

Item Type: Article
Uncontrolled Keywords: OVARIAN-CARCINOMA; BREAST-CANCER; TUMOR-STROMA; EXPRESSION; TISSUE; CELLS; AGONISTS; ROFECOXIB; THERAPY; DRUGS;
Subjects: 600 Technology > 610 Medical sciences Medicine
Divisions: Medicine > Lehrstuhl für Dermatologie und Venerologie
Depositing User: Dr. Gernot Deinzer
Date Deposited: 24 Aug 2020 08:34
Last Modified: 24 Aug 2020 08:34
URI: https://pred.uni-regensburg.de/id/eprint/25607

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