畜牧兽医学报 ›› 2025, Vol. 56 ›› Issue (7): 3357-3367.doi: 10.11843/j.issn.0366-6964.2025.07.028

• 营养与饲料 • 上一篇    下一篇

硒多糖缓解马骨骼肌卫星细胞氧化损伤作用的研究

刘雨蒙(), 高星, 赵雅丽, 曹迪, 芒来, 张心壮*()   

  1. 内蒙古农业大学动物科学学院 农业农村部马属动物种业创新重点实验室, 呼和浩特 010018
    内蒙古农业大学动物科学学院 内蒙古马属动物科学研究与技术创新重点实验室, 呼和浩特 010018
    内蒙古农业大学动物科学学院 内蒙古农业大学马属动物研究中心, 呼和浩特 010018
  • 收稿日期:2024-08-29 出版日期:2025-07-23 发布日期:2025-07-25
  • 通讯作者: 张心壮 E-mail:1622969534@qq.com;ZhangXinZhuang@126.com
  • 作者简介:刘雨蒙(1999-),女,黑龙江大庆人,硕士,主要从事马饲料营养研究,E-mail: 1622969534@qq.com
  • 基金资助:
    内蒙古农业大学优秀青年科学基金培育项目(BR230405);内蒙古自治区重点研发项目(2023YFD0002);内蒙古自治区教育厅一流学科科研专项(YLXKZX-NND-007);内蒙古农业大学动物科学学院高水平成果培育专项(CG202421)

Effects of Selenium Polysaccharides on Oxidative Damage of Equine Skeletal Muscle Satellite Cell

LIU Yumeng(), GAO Xing, ZHAO Yali, CAO Di, MANG Lai, ZHANG Xinzhuang*()   

  1. Key Laboratory of Equine Animal Industry Innovation, Ministry of Agriculture, Inner Mongolia Agricultural University, Hohhot 010018, China
    Rural Affairs/Inner Mongolia Key Laboratory of Equine Animal Scientific Research, Inner Mongolia Agricultural University, Hohhot 010018, China
    Technological Innovation/Inner Mongolia Agricultural University, Equine Animal Research Center, College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010018, China
  • Received:2024-08-29 Online:2025-07-23 Published:2025-07-25
  • Contact: ZHANG Xinzhuang E-mail:1622969534@qq.com;ZhangXinZhuang@126.com

摘要:

旨在研究硒多糖预保护对H2O2诱导蒙古马骨骼肌卫星细胞氧化应激的缓解作用及机制,为开发缓解马的骨骼肌运动损伤抗氧化剂提供参考。利用H2O2诱导的蒙古马骨骼肌卫星细胞氧化损伤模型开展试验,试验共分为对照组、H2O2损伤组以及硒多糖保护组(硒多糖保护组的浓度分别为50、150、250、350、450、550 nmol ·L-1),对细胞活力、抗氧化性能、抗氧化基因表达量和细胞线粒体功能进行检测。结果表明:随着硒多糖预保护浓度的增加,细胞存活率、总抗氧化能力(total antioxidant capacity,T-AOC)、超氧化物歧化酶(superoxide dismutase,SOD)、过氧化氢酶(catalase,CAT)、谷胱甘肽过氧化物酶(glutathione peroxidase,GPX)的活性出现先增加后降低的变化,350 nmol ·L-1硒多糖预保护组细胞存活率显著高于H2O2损伤组(P<0.05),与对照组无显著差异,但抗氧化酶活性显著高于H2O2损伤组和对照组(P<0.05);细胞中丙二醛(malondialdehyde,MDA)含量随硒多糖的增加呈先降低后增高的变化,350 nmol ·L-1硒多糖预保护组含量最低,显著低于对照组和H2O2损伤组(P<0.05);350 nmol ·L-1硒多糖预保护组原癌基因RELA(RELA proto-oncogene,RELA)、谷胱甘肽过氧化物酶(probable phospholipid hydroperoxide glutathione peroxidase,GPX)、硫氧还蛋白还原酶1(thioredoxin reductase 1,TRXR1)和超氧化物歧化酶1(superoxide dismutase 1,SOD1)的mRNA表达量极显著高于H2O2损伤组(P<0.01),RELA的mRNA表达量显著高于对照组(P<0.05),GPXTRXR1和SOD1的mRNA表达量极显著高于对照组(P<0.01)。350 nmol ·L-1硒多糖预保护组核因子类红细胞2相关因子2(nuclear factor erythroid-2-related factor 2,Nrf2)的mRNA表达量显著高于其他两组(P<0.05);350 nmol ·L-1硒多糖组的细胞耗氧率(OCR)显著高于H2O2损伤组(P < 0.05),基础呼吸值、ATP消耗值、质子漏、最大呼吸值分别为34.86、26.06、8.80、32.41,极显著高于H2O2损伤组(P < 0.01),非线粒体呼吸值显著高于损伤组(P < 0.05)。综上可知,硒多糖通过激活Nrf2信号通路,上调下游抗氧化基因的表达,进而提高了抗氧化酶活性,降低了MDA的含量,促进了细胞线粒体呼吸功能,提高了细胞活性,达到缓解马骨骼肌卫星细胞氧化损伤的效果,本试验条件下,350 nmol ·L-1硒多糖效果较好。

关键词: 硒多糖, 马, 骨骼肌卫星细胞, 氧化损伤

Abstract:

The aim of this study was to investigate the protective effect and mechanism of selenium (Se) polysaccharide (Sepol) preprotection on H2O2-induced oxidative stress in Mongolian horse skeletal muscle satellite cells, and to provide a reference for the development of antioxidants to alleviate exercise injury in horse skeletal muscle.The oxidative injury model of Mongolian horse skeletal muscle satellite cells was induced by H2O2 and used to perform the experiment. The experiment was divided into control group, H2O2 injury group and selenium polysaccharide protection groups (concentrations of selenium polysaccharide protection group were 50, 150, 250, 350, 450, 550 nmol ·L-1, respectively). Cell viability, antioxidant activity, antioxidant gene expression and mitochondrial function were measured.The results showed that: Cell viability, total antioxidant capacity (T-AOC), activities of superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPX) increased first and then decreased with the increase of pre-protective concentration of seleniumpolysaccharide. The cell survival rate of 350 nmol ·L-1 Se polysaccharide preprotection group was significantly higher than that of injury group (P < 0.05) and there was no significant difference between 350 nmol ·L-1 Se polysaccharide preprotection group and control group, but the activity of antioxidant enzymes was significantly higher than that of injury group and control group (P < 0.05). The content of malondialdehyde (MDA) in cells decreased first and then increased with the increase of Se polysaccharide. The content of MDA in 350 nmol ·L-1 Se polysaccharide preprotection group was the lowest, which was significantly lower than that in control group and injury group (P < 0.05).The mRNA expression of proto-oncogene RELA(RELA proto-oncogene, RELA), glutathione peroxidase (probable phospholipid hydroperoxide glutathione peroxidase, GPX), thioredoxin reductase 1 (TRXR 1 ) and superoxide dismutase 1 (SOD 1 ) in the 350 nmol ·L-1 selenium polysaccharide pre-protected group was highly significant higher than that of the injured group (P < 0.01). The mRNA expression of RELA was significantly higher than that of the control group (P < 0.05), the mRNA expression of GPX, TRXR1 and SOD1 was extremely significantly higher than those of the control group (P < 0.01). mRNA expression of the nuclear factor-like erythroid 2-related factor 2 (Nrf2 ) in the 350 nmol ·L-1 selenium polysaccharide preprotected group was significantly higher than that of the other two selenium polysaccharide preprotected groups (P < 0.05).The oxygen consumption rate (OCR) of 350 nmol ·L-1selenosaccharide group was significantly higher than that of H2O2injury group (P < 0.05).The basal respiration, ATP consumption, proton leak and maximal respiration were 34.86, 26.06, 8.80 and 32.41, respectively, which were significantly higher than those of H2O2 injury group (P < 0.01). The non-mitochondrial respiration value was significantly higher than that of the injury group (P < 0.05).In conclusion, selenium polysaccharide can alleviate oxidative damage of horse skeletal muscle satellite cells by activating Nrf2 signaling pathway and up-regulating the expression of downstream antioxidant genes, thereby improving antioxidant enzyme activity, reducing MDA content, promoting mitochondrial respiratory function, and improving cell activity. Under the current experimental conditions, 350 nmol ·L-1 selenium polysaccharide had the best effect.

Key words: selenium polysaccharide, horse, skeletal muscle satellite cells, oxidative damage

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