@misc{oai:repo.qst.go.jp:00062258, author = {長谷川, 純崇 and U, Winn Aung and 古川, 高子 and 佐賀, 恒夫 and 長谷川 純崇 and U Winn Aung and 古川 高子 and 佐賀 恒夫}, month = {Oct}, note = {Exposure to asbestos is a known etiological factor in malignant mesothelioma (MM). However, in vitro cell culture studies have provided paradoxical evidence that asbestos exposure to mesothelial cells causes cytotoxicity or apoptosis rather than malignant transformation. Here we demonstrate that ferritin heavy chain (FHC), a core subunit of iron-binding protein ferritin, works as an anti-apoptotic protein against toxic asbestos and oxidative stress in human mesothelial cells and MM cells. We found that FHC was induced in asbestos-exposed MeT-5A human mesothelial cells. The mesothelial cell line stably expressing FHC generated less amount of hydrogen peroxide (H2O2), one of the main ROS, after asbestos exposure and was more resistant to apoptosis induced by H2O2 compared with the cells transfected with the empty vector. We also found that NCI-H2052, a human MM cell line, had a higher expression of endogenous FHC than MeT-5A and showed apoptosis resistant phenotype. Suppression of the over-expressed FHC by using FHC siRNA rendered the MM cells sensitive to apoptosis. Our findings highlight the potential role of FHC in the pathogenesis of asbestos-induced mesothelioma., 第66回日本癌学会学術総会}, title = {アスベスト発がんにおけるフェリチンH鎖の役割}, year = {2007} }