ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2019, Vol. 50 ›› Issue (5): 1016-1025.doi: 10.11843/j.issn.0366-6964.2019.05.012

• ANIMAL NUTRITION AND FEEDS • Previous Articles     Next Articles

Effects of H2O2 on Oxidative Damage of C2C12 Cells

CHEN Xiangxing1,2, LI Jiaolong1, XING Tong1, ZHANG Lin1, GAO Feng1*   

  1. 1. Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control, Key Laboratory of Animal Origin Food Production and Safety Guarantee of Jiangsu Province, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China;
    2. Zibo Service Center for Animal Husbandry and Fishery, Zibo 255000, China
  • Received:2018-11-21 Online:2019-05-23 Published:2019-05-23

Abstract:

The change of C2C12 cells exposed to H2O2 was investigated and the possible path of oxidative damage was explored in this study. There was 3 treatments, and 6 repeats in each treatment. C2C12 cells attached to the substrate and cultured in DMEM for 24 h were treated as control (n=6); the medium was added with PDTC (20 μmol·L-1, PDTC treatment, n=6) for 24 h or H2O2 (0.5 mmol·L-1, H2O2 treatment, n=6) for 24 h. The viability, ROS level and apoptosis rate of cells in different treatments were detected. The expression of genes related to cell apoptosis and autophagy and factors related to NF-κB signaling pathway were determined by real-time PCR and Western blot. The results showed that cells in PDTC treatment had significantly higher total apoptosis rate, mRNA expression of caspase-3, caspase-6, caspase-9 and the protein expression of total caspase-3, mRNA expression of Beclin1, LC3-Ⅱ/LC3-I and the protein expression level of total LC3-Ⅱ(P<0.05), and had significantly lower mRNA expression of p50, Bcl-2, RelA, Cox-2 and protein expression of total NF-κB compared to that in the control treatment(P<0.05). Moreover, cells in H2O2 treatment exhibited significantly higher ROS level and total apoptosis rate(P<0.05), mRNA expression of caspase-3, caspase-6, caspase-8, caspase-9 and protein expression of total caspase-3(P<0.05), mRNA expression of Beclin 1, LC3-Ⅱ/LC3-I and protein expression of total LC3-Ⅱ(P<0.05), mRNA expression of Bax(P<0.05), and had significantly lower mRNA expressions of p50, Bcl-2, RelA, Cox-1, Cox-2 and protein expression of total NF-κB(P<0.05) compared to that in the control treatment. These results indicated that H2O2 could promote the ROS formation, mediated the apoptosis and autophagy processes by suppressing the NF-κB signaling pathway in C2C12 cells, which was similar with the role of PDTC, the inhibitor of NF-κB factor.

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