PMID- 29746847 OWN - NLM STAT- MEDLINE DCOM- 20180619 LR - 20181202 IS - 1879-0631 (Electronic) IS - 0024-3205 (Linking) VI - 205 DP - 2018 Jul 15 TI - CsA attenuates compression-induced nucleus pulposus mesenchymal stem cells apoptosis via alleviating mitochondrial dysfunction and oxidative stress. PG - 26-37 LID - S0024-3205(18)30254-6 [pii] LID - 10.1016/j.lfs.2018.05.014 [doi] AB - AIMS: This study aims to investigate the protective effects and potential mechanisms of cyclosporine A (CsA), which efficiently inhibits mitochondrial permeability transition pore (MPTP) opening, on compression-induced apoptosis of human nucleus pulposus mesenchymal stem cells (NP-MSCs). MATERIALS AND METHODS: Human NP-MSCs were subjected to various periods of 1.0 MPa compression. Cell viability was evaluated using cell counting kit-8 (CCK-8) assay. The cellular ultrastructure and ATP level were analyzed via transmission electron microscopy (TEM) and ATP detection kit respectively. The apoptosis ratio was determined using Annexin V/PI dual staining and terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) assays. The levels of apoptosis-associated molecules (cleaved caspase-3, Bax and Bcl-2) were analyzed by western blot and qRT-PCR. Additionally, MPTP opening, mitochondrial membrane potential (MMP) and the levels of oxidative stress-related indicators (ROS), superoxide dismutase (SOD) and malondialdehyde (MDA) were monitored. KEY FINDINGS: Annexin V/PI dual staining and detection of apoptosis-associated molecules demonstrated that compression significantly up-regulated apoptosis level of NP-MSCs in a time-dependent manner. CsA greatly down-regulated compression-mediated NP-MSC apoptosis and the cell death ratio. Compression also notably exacerbated mitochondrial dysfunction, ATP depletion and oxidative stress in NP-MSCs, all of which were rescued by CsA. SIGNIFICANCE: Our results demonstrated that CsA efficiently inhibited compression-induced NP-MSCs apoptosis by alleviating mitochondrial dysfunction and oxidative stress. These findings provide new insights into intervertebral disc (IVD) degeneration (IVDD), and suggest CsA treatment as a potential strategy for delaying or even preventing IVDD. CI - Copyright (c) 2018 Elsevier Inc. All rights reserved. FAU - Li, Zhiliang AU - Li Z AD - Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China. FAU - Chen, Songfeng AU - Chen S AD - Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou City 450052, China. FAU - Ma, Kaige AU - Ma K AD - Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China. FAU - Lv, Xiao AU - Lv X AD - Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China. FAU - Lin, Hui AU - Lin H AD - Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China. FAU - Hu, Binwu AU - Hu B AD - Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China. FAU - He, Ruijun AU - He R AD - Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China. FAU - Shao, Zengwu AU - Shao Z AD - Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China. Electronic address: szwpro@163.com. LA - eng PT - Journal Article DEP - 20180508 PL - Netherlands TA - Life Sci JT - Life sciences JID - 0375521 RN - 0 (Apoptosis Regulatory Proteins) RN - 0 (Immunosuppressive Agents) RN - 0 (Reactive Oxygen Species) RN - 83HN0GTJ6D (Cyclosporine) RN - 8L70Q75FXE (Adenosine Triphosphate) SB - IM MH - Adenosine Triphosphate/metabolism MH - Apoptosis/*drug effects MH - Apoptosis Regulatory Proteins/metabolism MH - Cell Survival/drug effects MH - Cyclosporine/*pharmacology MH - Humans MH - Immunosuppressive Agents/*pharmacology MH - Intervertebral Disc Degeneration/metabolism MH - Membrane Potential, Mitochondrial/drug effects MH - Mesenchymal Stem Cells/*drug effects/ultrastructure MH - Mitochondrial Diseases/*drug therapy MH - Nucleus Pulposus/*cytology/drug effects MH - Oxidative Stress/*drug effects MH - Reactive Oxygen Species/metabolism OTO - NOTNLM OT - Apoptosis OT - Cyclosporine A OT - Intervertebral disc degeneration (IVDD) OT - Mitochondrial dysfunction OT - Nucleus pulposus mesenchymal stem cells OT - Oxidative stress EDAT- 2018/05/11 06:00 MHDA- 2018/06/21 06:00 CRDT- 2018/05/11 06:00 PHST- 2018/01/15 00:00 [received] PHST- 2018/05/05 00:00 [accepted] PHST- 2018/05/11 06:00 [pubmed] PHST- 2018/06/21 06:00 [medline] PHST- 2018/05/11 06:00 [entrez] AID - S0024-3205(18)30254-6 [pii] AID - 10.1016/j.lfs.2018.05.014 [doi] PST - ppublish SO - Life Sci. 2018 Jul 15;205:26-37. doi: 10.1016/j.lfs.2018.05.014. Epub 2018 May 8.