PMID- 28056323 OWN - NLM STAT- MEDLINE DCOM- 20170605 LR - 20181202 IS - 0578-1426 (Print) IS - 0578-1426 (Linking) VI - 56 IP - 1 DP - 2017 Jan 1 TI - [The role of neuroglobin in oxygen-glucose deprivation and reoxygenation-induced mitochondrial depolarization and reactive oxygen species production in SH-SY5Y cells]. PG - 44-48 LID - 10.3760/cma.j.issn.0578-1426.2017.01.011 [doi] AB - Objective: To investigate the role of neuroglobin (NGB) in oxygen-glucose deprivation and reoxygenation (OGD/R) induced mitochondrial depolarization and reactive oxygen species (ROS)production in a human neuroblastoma cell line (SH-SY5Y). Methods: SH-SY5Y cells were transfected with lentivirus to establish a stable cell line of NGB knockdown (KD). After treated with OGD/R, cells were collected at different time points to analyze NGB mRNA and protein levels. Furthermore, cells were stained with JC-1 and DCFH-DA to evaluate mitochondrial depolarization and ROS production by inverted fluorescence microscope. Also, to determine the neurotoxicity, we measured the lactate dehydrogenase(LDH)level in the cell culture medium. Results: After the treatment of OGD/R, the NGB mRNA and protein started to elevate and peak at 4 h and 8 h (2.04+/-0.35 fold, 1.69+/-0.18 fold). Compared with the vector group, NGB KD group had much more mitochondrial depolarization [JC-1 red/green (1.10+/-0.10) vs (1.46+/-0.11), P<0.05] and ROS production [DCFH-DA fluorescence (36.30+/-5.32) vs (16.26+/-2.97), P<0.05]. Furthermore, NGB KD groups had a higher level of LDH release [(63.42+/-6.14)%vs (49.65+/-5.09)%, P<0.05]. Conclusions: NGB plays an important role in the homeostasis of mitochondria. Knockdown of NGB results in increased mitochondrial depolarization, ROS production and neurotoxicity under hypoxia circumstances. FAU - Deng, S Y AU - Deng SY AD - Department of Critical Care Medicine, Xiangya Hospital, Central South University, Changsha 410008, China. FAU - Ai, Y H AU - Ai YH FAU - Zhang, L N AU - Zhang LN FAU - Wu, L AU - Wu L FAU - Chen, C X AU - Chen CX FAU - Wang, Y M AU - Wang YM FAU - Liu, Z Y AU - Liu ZY FAU - Huang, L AU - Huang L FAU - Peng, Q Y AU - Peng QY LA - chi PT - Journal Article PL - China TA - Zhonghua Nei Ke Za Zhi JT - Zhonghua nei ke za zhi JID - 16210490R RN - 0 (Fluoresceins) RN - 0 (Nerve Tissue Proteins) RN - 0 (Neuroglobin) RN - 0 (RNA, Messenger) RN - 0 (Reactive Oxygen Species) RN - 2044-85-1 (diacetyldichlorofluorescein) RN - 9004-22-2 (Globins) RN - IY9XDZ35W2 (Glucose) RN - S88TT14065 (Oxygen) SB - IM MH - Cells, Cultured MH - Fluoresceins MH - Globins/genetics/metabolism/*physiology MH - Glucose/*deficiency/metabolism/*pharmacology MH - Homeostasis/*drug effects MH - Humans MH - Hypoxia/*pathology MH - Nerve Tissue Proteins/genetics/metabolism/*physiology MH - Neuroglobin MH - Oxygen/metabolism/pharmacology MH - RNA, Messenger/genetics/metabolism MH - Reactive Oxygen Species/metabolism MH - Transfection EDAT- 2017/01/06 06:00 MHDA- 2017/06/06 06:00 CRDT- 2017/01/06 06:00 PHST- 2017/01/06 06:00 [entrez] PHST- 2017/01/06 06:00 [pubmed] PHST- 2017/06/06 06:00 [medline] AID - 10.3760/cma.j.issn.0578-1426.2017.01.011 [doi] PST - ppublish SO - Zhonghua Nei Ke Za Zhi. 2017 Jan 1;56(1):44-48. doi: 10.3760/cma.j.issn.0578-1426.2017.01.011.