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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Wu, Jing Wang, Yaning Zhang, Lijuan Li, Jue Wo, Da |
| Description | Author Affiliation: Wu J ( Division of Preventive Medicine, Tongji University School of Medicine, Shanghai 200092, P.R. China.); Wang Y ( Division of Preventive Medicine, Tongji University School of Medicine, Shanghai 200092, P.R. China.); Wo D ( Division of Preventive Medicine, Tongji University School of Medicine, Shanghai 200092, P.R. China.); Zhang L ( Division of Preventive Medicine, Tongji University School of Medicine, Shanghai 200092, P.R. China.); Li J ( Division of Preventive Medicine, Tongji University School of Medicine, Shanghai 200092, P.R. China.) |
| Abstract | Nuclear respiratory factor 1 (NRF-1) has important roles in the regulation of several key metabolic genes required for cellular growth and respiration. A previous study by our group indicated that NRF1 is involved in mitochondrial dysfunction induced by the environmental pollutant benzo[a]pyrene in the 16HBE human bronchial epithelial cell line. In the present study, it was observed that its genotoxic metabolite, antibenzopyrene7,8diol9,10epoxide (BPDE), triggered cell cycle arrest in Sphase in 16HBE cells by activating ataxia-telangiectasia (ATM)/checkpoint kinase (Chk)2 and ATM and Rad3 related (ATR)/Chk1 signaling pathways. NRF1 expression was suppressed by BPDE after treatment for 6 h. Flow cytometric analysis revealed that NRF1 overexpression attenuated cell cycle arrest in Sphase induced by BPDE. In line with this result, DNAdamage checkpoints were activated following NRF1 overexpression, as demonstrated by increased phosphorylation of ATM, Chk2 and γH2AX, but not ATR and Chk1, according to western blot analysis. It was therefore indicated that NRF1 overexpression attenuated BPDEinduced Sphase arrest via the ATM/Chk2 signaling pathway. |
| ISSN | 17912997 |
| e-ISSN | 17913004 |
| Journal | Molecular Medicine Reports |
| Issue Number | 5 |
| Volume Number | 13 |
| Language | English |
| Publisher | Spandidos Publications |
| Publisher Date | 2016-05-01 |
| Publisher Place | Greece |
| Access Restriction | Open |
| Subject Keyword | Discipline Molecular Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Biochemistry Molecular Biology Cancer Research Molecular Medicine Oncology |
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