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Publication : Molecular pathogenesis of malignant mesothelioma.

First Author  Sekido Y Year  2013
Journal  Carcinogenesis Volume  34
Issue  7 Pages  1413-9
PubMed ID  23677068 Mgi Jnum  J:199007
Mgi Id  MGI:5500105 Doi  10.1093/carcin/bgt166
Citation  Sekido Y (2013) Molecular pathogenesis of malignant mesothelioma. Carcinogenesis 34(7):1413-9
abstractText  Malignant mesothelioma (MM) is an aggressive tumor arising primarily from the pleural or peritoneal cavities. It develops by asbestos exposure after a long latency, which is characterized by insidious growth and clinical presentation at an advanced stage of disease. MM is highly refractory to conventional therapies even with a combination of aggressive surgical intervention and multimodality strategies, with cure remaining elusive. Molecular genetic analysis has revealed several key genetic alterations, which are responsible for the development and progression of MM. The cyclin-dependent kinase inhibitor 2A/alternative reading frame (CDKN2A/ARF), neurofibromatosis type 2 (NF2) and BRCA1-associated protein-1 (BAP1) genes are the most frequently mutated tumor suppressor genes detected in MM cells; the alterations of the latter two are relatively characteristic of MM. Merlin, which is encoded by NF2, regulates multiple cell signaling cascades including the Hippo and mammalian target of rapamycin pathways, which regulate cell proliferation and growth. BAP1 is involved in histone modification and its inactivation induces the disturbance of global gene expression profiling. The discovery of a new familial cancer syndrome with germline mutation of BAP1 also indicates the importance of genetic factors in MM susceptibility. Meanwhile, although frequent expression and functional activations of oncogene products such as receptor tyrosine kinases are observed in MM cells, activating mutations of these genes are rare. With further comprehensive genome analyses, new genetic and epigenetic alterations in MM cells are expected to be revealed more precisely, and the new knowledge based on them will be applied for developing new diagnostic tools and new target therapies against MMs.
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