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- W1551273295 abstract "Abstract: In this study, we investigated the role of nuclear respiratory factor-1(NRF-1) in benzo(a)pyrene (BaP)-induced mitochondrial events in human bronchial epithelial cells (16HBE). Cytotoxicity was determined with MTT assay, and apoptosis was measured by flow cytometry. The results showed that BaP inhibited cell proliferation in a dose-dependent manner and induced apoptosis in 16HBE cells. Time-dependent reactive oxygen species (ROS) generation induced by BaP was observed in 16HBE cells. The loss of mitochondrial membrane permeability transition (MPT) was obtained by a laser scanning confocal microscope, and the decreasing ATP level was detected by a Cell-Titer-Glo® Luminescent Cell Viability Assay. Results of western blotting assay revealed that both NRF-1 and mitochondrial transcription factor A (mtTFA) decreased in 12-μM BaP-treated cells at both 12 and 24 hr. The results of RT-PCR indicate that NRF-1 and mtTFA mRNA in 16HBE cells were not changed after BaP treatment 12 or 24 hr. Down-regulation of NRF-1 by shRNA further reduced the loss of MPT and increased ROS generation in response to BaP treatment. Therefore, our results demonstrate that NRF-1 is responsible for BaP-induced mitochondrial dysfunction in 16HBE cells and associated with the level of mtTFA protein, loss of MPT and ROS overproduction." @default.
- W1551273295 created "2016-06-24" @default.
- W1551273295 creator A5026641371 @default.
- W1551273295 creator A5062581761 @default.
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- W1551273295 date "2011-04-12" @default.
- W1551273295 modified "2023-09-23" @default.
- W1551273295 title "Nuclear Respiratory Factor-1 is Involved in Mitochondrial Dysfunction Induced by Benzo(a)pyrene in Human Bronchial Epithelial Cells" @default.
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- W1551273295 doi "https://doi.org/10.1111/j.1742-7843.2011.00697.x" @default.
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