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Orozco Morales ML, Rinaldi CA, de Jong E, Lansley SM, Lee YCG, Zemek RM, Bosco A, Lake RA, Lesterhuis WJ. Geldanamycin treatment does not result in anti-cancer activity in a preclinical model of orthotopic mesothelioma. PLoS One 2023; 18:e0274364. [PMID: 37146029 PMCID: PMC10162533 DOI: 10.1371/journal.pone.0274364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Accepted: 03/26/2023] [Indexed: 05/07/2023] Open
Abstract
Mesothelioma is characterised by its aggressive invasive behaviour, affecting the surrounding tissues of the pleura or peritoneum. We compared an invasive pleural model with a non-invasive subcutaneous model of mesothelioma and performed transcriptomic analyses on the tumour samples. Invasive pleural tumours were characterised by a transcriptomic signature enriched for genes associated with MEF2C and MYOCD signaling, muscle differentiation and myogenesis. Further analysis using the CMap and LINCS databases identified geldanamycin as a potential antagonist of this signature, so we evaluated its potential in vitro and in vivo. Nanomolar concentrations of geldanamycin significantly reduced cell growth, invasion, and migration in vitro. However, administration of geldanamycin in vivo did not result in significant anti-cancer activity. Our findings show that myogenesis and muscle differentiation pathways are upregulated in pleural mesothelioma which may be related to the invasive behaviour. However, geldanamycin as a single agent does not appear to be a viable treatment for mesothelioma.
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Affiliation(s)
- M Lizeth Orozco Morales
- School of Biomedical Sciences, University of Western Australia, Crawley, Western Australia, Australia
- National Centre for Asbestos Related Diseases, Nedlands, Western Australia, Australia
- Institute for Respiratory Health, Nedlands, Western Australia, Australia
| | - Catherine A Rinaldi
- School of Biomedical Sciences, University of Western Australia, Crawley, Western Australia, Australia
- National Centre for Asbestos Related Diseases, Nedlands, Western Australia, Australia
- Centre for Microscopy Characterisation and Analysis, Nedlands, Western Australia, Australia
| | - Emma de Jong
- Telethon Kids Institute, The University of Western Australia, Nedlands, Western Australia, Australia
| | - Sally M Lansley
- Institute for Respiratory Health, Nedlands, Western Australia, Australia
| | - Y C Gary Lee
- Institute for Respiratory Health, Nedlands, Western Australia, Australia
| | - Rachael M Zemek
- Telethon Kids Institute, The University of Western Australia, Nedlands, Western Australia, Australia
| | - Anthony Bosco
- Telethon Kids Institute, The University of Western Australia, Nedlands, Western Australia, Australia
| | - Richard A Lake
- School of Biomedical Sciences, University of Western Australia, Crawley, Western Australia, Australia
- National Centre for Asbestos Related Diseases, Nedlands, Western Australia, Australia
- Institute for Respiratory Health, Nedlands, Western Australia, Australia
| | - W Joost Lesterhuis
- School of Biomedical Sciences, University of Western Australia, Crawley, Western Australia, Australia
- National Centre for Asbestos Related Diseases, Nedlands, Western Australia, Australia
- Institute for Respiratory Health, Nedlands, Western Australia, Australia
- Telethon Kids Institute, The University of Western Australia, Nedlands, Western Australia, Australia
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