PMID- 25450462 OWN - NLM STAT- MEDLINE DCOM- 20150915 LR - 20141216 IS - 1878-5875 (Electronic) IS - 1357-2725 (Linking) VI - 57 DP - 2014 Dec TI - Power frequency magnetic fields induced reactive oxygen species-related autophagy in mouse embryonic fibroblasts. PG - 108-14 LID - S1357-2725(14)00324-0 [pii] LID - 10.1016/j.biocel.2014.10.013 [doi] AB - Power frequency magnetic fields (PFMF) have been reported to affect several cellular functions, such as cell proliferation and apoptosis. In this study, we investigated the effects of PFMF on mouse embryonic fibroblasts (MEF) autophagy. After cells were exposed to 50 Hz PFMF at 2 mT for 0.5 h, 2 h, 6 h, 12 h, and 24 h, we observed a significant increase in autophagic markers at 6 h, including (i) higher microtubule-associated protein 1 light chain 3-II (LC3-II), (ii) the increased formation of GFP-LC3 puncta, and (iii) increased numbers of autophagic vacuoles under transmission electron microscope. Moreover, we provide convincing evidence using chloroquine (CQ) that the increase of autophagic markers was the result of enhanced autophagic flux and not the suppression of lysosomal function. In a search for molecular mechanisms underlying PFMF-mediated autophagy, we observe that the autophagic process involved reactive oxygen species (ROS) and was independent of the mammalian target of rapamycin (mTOR) signaling pathway. CI - Copyright (c) 2014 The Authors. Published by Elsevier Ltd.. All rights reserved. FAU - Chen, Yanfeng AU - Chen Y AD - Bioelectromagnetics Laboratory, School of Medicine, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China. FAU - Hong, Ling AU - Hong L AD - Bioelectromagnetics Laboratory, School of Medicine, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China. FAU - Zeng, Ying AU - Zeng Y AD - Bioelectromagnetics Laboratory, School of Medicine, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China. FAU - Shen, Yunyun AU - Shen Y AD - Bioelectromagnetics Laboratory, School of Medicine, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China. FAU - Zeng, Qunli AU - Zeng Q AD - Bioelectromagnetics Laboratory, School of Medicine, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China. Electronic address: zengql@zju.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20141019 PL - Netherlands TA - Int J Biochem Cell Biol JT - The international journal of biochemistry & cell biology JID - 9508482 RN - 0 (Reactive Oxygen Species) SB - IM MH - Animals MH - Apoptosis/*radiation effects MH - Autophagy/*drug effects MH - Cells, Cultured MH - Embryo, Mammalian/cytology MH - Fibroblasts/cytology/*metabolism/*radiation effects MH - *Magnetic Fields MH - Mice MH - Reactive Oxygen Species/*metabolism OTO - NOTNLM OT - Apoptosis OT - Autophagy OT - Mouse embryonic fibroblasts OT - Power frequency magnetic fields OT - Reactive oxygen species EDAT- 2014/12/03 06:00 MHDA- 2015/09/16 06:00 CRDT- 2014/12/03 06:00 PHST- 2014/06/24 00:00 [received] PHST- 2014/09/30 00:00 [revised] PHST- 2014/10/08 00:00 [accepted] PHST- 2014/12/03 06:00 [entrez] PHST- 2014/12/03 06:00 [pubmed] PHST- 2015/09/16 06:00 [medline] AID - S1357-2725(14)00324-0 [pii] AID - 10.1016/j.biocel.2014.10.013 [doi] PST - ppublish SO - Int J Biochem Cell Biol. 2014 Dec;57:108-14. doi: 10.1016/j.biocel.2014.10.013. Epub 2014 Oct 19.