PMID- 27840405 OWN - NLM STAT- MEDLINE DCOM- 20170220 LR - 20190609 IS - 2329-0358 (Electronic) IS - 1425-9524 (Linking) VI - 21 DP - 2016 Nov 14 TI - Effects of Reactive Oxygen Species on Differentiation of Bone Marrow Mesenchymal Stem Cells. PG - 695-700 AB - BACKGROUND The low differentiation rates for transplanted stem cells are challenging problems in spinal cord injury (SCI) treatment. Studies have demonstrated that the inhibition of the Notch1 pathway in bone marrow mesenchymal stem cells (BMSCs) contributed to the differentiation of these cells. Research findings that certain antioxidants induce BMSCs to differentiate into neuronal cells suggest that BMSC differentiation is related to the level of reactive oxygen species (ROS) in cells. This study aimed to define the effect of ROS on the differentiation of BMSCs. MATERIAL AND METHODS In this study, after BMSCs were induced with the antioxidant beta-mercaptoethanol (beta-ME), related proteins were analyzed by Western blotting and immunofluorescence. In order to find the role of ROS in the differentiation, DCFH-DA was used to detect ROS levels in antioxidant-treated BMSCs, H2O2-treated BMSCs, and normal BMSCs, and the expression levels of Notch1 and its downstream transcriptional suppressor Hes1 were analyzed. RESULTS Induced with beta-ME, Western blotting and immunofluorescence revealed gradual increases in the expression of Nestin (a neural stem cell-specific protein) and neuron-specific enolase (NSE) but decreases in Notch1 expression. The expression levels of Notch1 and Hes1 were positively correlated with changes in ROS level. CONCLUSIONS These data suggest that the antioxidant-induced differentiation of BMSCs into neurons may be related to ROS-based regulation of the Notch1 signalling pathway. FAU - Shi, Yao AU - Shi Y AD - Department of Orthopaedic Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China (mainland). FAU - Hu, Yiwen AU - Hu Y AD - Department of Orthopaedic Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China (mainland). FAU - Lv, Chen AU - Lv C AD - Department of Orthopaedic Surgery, The First Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China (mainland). FAU - Tu, Guanjun AU - Tu G AD - Department of Orthopaedic Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China (mainland). LA - eng PT - Journal Article DEP - 20161114 PL - United States TA - Ann Transplant JT - Annals of transplantation JID - 9802544 RN - 0 (Antioxidants) RN - 0 (Hes1 protein, rat) RN - 0 (Reactive Oxygen Species) RN - 0 (Receptor, Notch1) RN - 0 (Transcription Factor HES-1) RN - 60-24-2 (Mercaptoethanol) RN - EC 4.2.1.11 (Phosphopyruvate Hydratase) SB - IM MH - Animals MH - Antioxidants/pharmacology MH - Bone Marrow Cells/*cytology/drug effects/metabolism MH - Cell Differentiation/drug effects/*physiology MH - Cell Line MH - Cell Survival/drug effects/physiology MH - Mercaptoethanol/pharmacology MH - Mesenchymal Stem Cells/*cytology/drug effects/metabolism MH - Phosphopyruvate Hydratase/metabolism MH - Rats MH - Reactive Oxygen Species/*metabolism MH - Receptor, Notch1/metabolism MH - Signal Transduction/drug effects/*physiology MH - Transcription Factor HES-1/metabolism EDAT- 2016/11/15 06:00 MHDA- 2016/11/15 06:01 CRDT- 2016/11/15 06:00 PHST- 2016/11/15 06:00 [entrez] PHST- 2016/11/15 06:00 [pubmed] PHST- 2016/11/15 06:01 [medline] AID - 900463 [pii] AID - 10.12659/aot.900463 [doi] PST - epublish SO - Ann Transplant. 2016 Nov 14;21:695-700. doi: 10.12659/aot.900463.