Carbonic anhydrase IX in malignant pleural mesotheliomas: A potential target for anti-cancer therapy |
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| Institution: | 1. Chemistry Department, Faculty of Science, Suez Canal University, Ismailia 41522, Egypt;2. Department of Chemistry, Faculty of Science, Alexandria University, P.O. Box 426, Ibrahimia, Alexandria 21321, Egypt;3. Department of Chemistry, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland;4. Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia |
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| Abstract: | Malignant mesothelioma is a neoplasm deriving from mesothelial cells, which line the body cavities. The most common type is malignant pleural mesothelioma (MPM), which is a locally aggressive malignancy with poor prognosis. To improve both the clinical diagnostics and treatment it is necessary to identify novel molecular targets which are characteristic for MPM. Although carbonic anhydrase (CA) enzymes have been linked to pH regulation and spread of cancer cells, they have not been thoroughly studied in MPM specimens. We investigated by immunohistochemistry the expression of CA isozymes II, VII, IX, and XII in a series of 27 histological MPM tumor samples. CA IX was absent in the normal lung alveolar cells, whereas it was abundantly expressed in the normal pleural mesothelium and malignant mesothelioma cells. CA VII also showed weak or moderate reactions in several cases of mesotheliomas. Neither high expression of CA VII nor CA IX did correlate significantly with the survival of the patients. The very high expression of CA IX in MPM suggests that it could represent a novel molecular target for cancer research applications. |
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