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Turning back the Wheel: Inducing Mesenchymal to Epithelial Transition via Wilms Tumor 1 Knockdown in Human Mesothelioma Cell Lines to Influence Proliferation, Invasiveness, and Chemotaxis

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Pathology & Oncology Research

Abstract

Malignant pleural mesothelioma (MPM) is a highly aggressive tumor that arises from the surface of the pleura and is associated with a history of asbestos exposure. The tumor is characterized by a strong local invasiveness and a poor response to any single modality therapy. Therefore clinical outcome of patients with MPM is poor and median survival time of untreated patients with MPM is 7 months from initial diagnosis. The Wilms Tumor Protein 1 (WT1) is a transcription factor which is highly expressed by MPM and is involved in cellular development and survival. We evaluated the role of WT1 in two human MPM cell lines (MSTO and H2052) expressing high levels of WT1. We performed a knockdown of WT1 using siRNA. Knockdown of WT1 was confirmed by Westernblotting. After knockdown of WT1 we investigated the effect on proliferation, chemoresistance, chemotaxis and migration. We could demonstrate that knockdown of WT1 suppresses chemoresistance in both cell lines compared with control (scrambled siRNA). Additionally, WT1 knockdown reduces proliferation, chemotaxis and invasiveness of mesothelioma cell lines. WT1 reduces malignancy of malignant mesothelioma cell lines and might be a new molecular target in mesothelioma therapy. Further investigations are needed to discover the mechanisms of chemoresistance depending on WT1.

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Acknowledgement

This work is support by the grant of the Stiftung Mattern (Universitätsklinikum Freiburg).

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Authors and Affiliations

  1. Department of Thoracic Surgery and Thoracic Endoscopy, Ruhrlandklinik, West German Lung Center, University Hospital Essen, University Duisburg-Essen, Essen, Germany

    Till Plönes

  2. Department of Pneumology, Center for Medicine, Medical Center University of Freiburg, Freiburg, Germany

    Till Plönes, Mitja Fischer, Kerstin Höhne, Joachim Müller-Quernheim & Gernot Zissel

  3. Graduate School of Pharmaceutical Sciences, Department of Clinical Pharmacology & Pharmacometrics, Chiba University, 1-8-1 Inohana, Chuou-ku, Chiba, 260-8675, Japan

    Hiromi Sato

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  1. Till Plönes
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Correspondence to Till Plönes.

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Plönes, T., Fischer, M., Höhne, K. et al. Turning back the Wheel: Inducing Mesenchymal to Epithelial Transition via Wilms Tumor 1 Knockdown in Human Mesothelioma Cell Lines to Influence Proliferation, Invasiveness, and Chemotaxis. Pathol. Oncol. Res. 23, 723–730 (2017). https://doi.org/10.1007/s12253-016-0181-3

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  • DOI: https://doi.org/10.1007/s12253-016-0181-3

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