期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 98, 期 -, 页码 506-514出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijbiomac.2017.02.015
关键词
Selenizing schisandra chinensis; polysaccharide; Chicken embryo hepatocyte; Antioxidase; Signal pathway
资金
- National Natural Science Foundation of China [31272596]
- Special Fund for Agro-scientific Research in the Public Interest [201403051]
- Priority Academic Program Development of Jiangsu Higher Education Institutions [09080900101]
The antioxidant action and mechanism of selenizing schisandra chinensis polysaccharide (sSCP) were investigated in chicken embryo hepatocyte (CEH) taking schisandra chinensis polysaccharide (SCP) and N-acetyl-L-cysteine (NAC) as control. The CEH was cultured and treated with sSCP, then exposed to H2O2. The CEHs' viability, apoptosis, ROS and antioxidase contents and the protein expression in MAPKs pathway and mitochondrion-dependence apoptotic signal pathway were assayed. The results showed that sSCP could significantly raise the cell viability and the activities of SOD, CAT and GSH-Px, decrease the cell apoptosis and the content of LDH, AST, ALT and MDA, down-regulate the protein expression of p-ERK1/2, p-p38, Bax, Caspase 3 and cytochrome C, and up-regulate the protein expression of Bcl-2 in comparison with H2O2 control group. The action of sSCP were stronger than those of SCP and NAC. These results indicated that selenylation modification could significantly enhance the antioxidant activity of SCP, sSCP could significantly protect hepatocyte from oxidative damage induced by H2O2, and its mechanism was by regulating the protein expression in MAPKs and mitochondrion-dependence apoptotic signaling pathways. (C) 2017 Elsevier B.V. All rights reserved.
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