Abstract
Rutin is well known for its anti-inflammatory and antioxidant properties against oxidative stress. However, its protective function in nucleus pulposus cells (NPCs) remains unclear. This study was aimed to explore the effects of rutin on oxidative stress in NPCs. Primary NPCs were obtained from 1-mo-old SD rats. The NPCs were treated with tert-butyl hydrogen peroxide (TBHP) to obtain the oxidative stress, and different concentrations of rutin were used to observe its influence on the oxidative stress in NPCs. Fluorescent probe DCFH-DA was used to detect reactive oxide species (ROS). The antioxidant proteins and genes of heat shock protein 70 (HSP70), manganese superoxide dismutase (Mn-SOD), catalase, aggrecan and collagen II in NPCs were measured by western blot and real-time PCR. With the stimulation of TBHP, the content of ROS in NPCs increased significantly and showed solubility correlation. Rutin effectively reduced the accumulation of ROS in a dose-dependent manner. The antioxidant proteins of HSP70, Mn-SOD, and catalase and the matrix proteins of aggrecan and collagen II decreased remarkably with the stimulation of TBHP, while the matrix metalloproteinase-13 (MMP-13) significantly increased after TBHP intervention. Rutin boosted the expressions of the HSP70, Mn-SOD, and catalase, elevated the contents of aggrecan and collagen II, and inhibited the expression of MMP-13 in NPCs. The findings of this study suggested that rutin is able to reverse oxidative stress and maintain cellular function of NPCs, and it was indicated that rutin could be a possible therapeutic option for intervertebral disc degeneration.
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This article was supported by the Scientific Research Projects of Administration of Traditional Chinese Medicine of Guangdong (No. 20211243 and No. 20201231), the Basic and Applied Basic Research Fund Project of Guangdong Province (No. 2020A1515110631), the Health Science and Technology Project of Guangzhou (No. 20211A011078), the Medical Science and Technology Research Fund Project of Guangdong (No. 2020111220372206), and the Science and Technology Plan Project of Guangzhou (No. 201704020032).
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QL and JZ were the major contributors in writing the manuscript and performing the experiments. QL and YH designed the study and were in charge of reviewing the manuscript. ZY, CX, and LL performed the experiments and analyzed the data. HH, YC, and YH interpreted the data and edited the important intellectual content of the manuscript. All authors read and approved the final manuscript.
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All experiments were approved by the Institutional Animal Care and Use Committee of Guangzhou Medical University.
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Editor: Tetsuji Okamoto
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Zhou, J., Liu, Q., Yang, Z. et al. Rutin maintains redox balance to relieve oxidative stress induced by TBHP in nucleus pulposus cells. In Vitro Cell.Dev.Biol.-Animal 57, 448–456 (2021). https://doi.org/10.1007/s11626-021-00581-7
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DOI: https://doi.org/10.1007/s11626-021-00581-7