Hydroxy Selenomethionine Alleviates Hepatic Lipid Metabolism Disorder of Pigs Induced by Dietary Oxidative Stress via Relieving the Endoplasmic Reticulum Stress
Jinzhong Jing,
Shenggang Yin,
Yan Liu,
Yonggang Liu,
Longqiong Wang,
Jiayong Tang,
Gang Jia,
Guangmang Liu,
Gang Tian,
Xiaoling Chen,
Jingyi Cai,
Bo Kang,
Hua Zhao
Affiliations
Jinzhong Jing
Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, China Ministry of Agriculture and Rural Affairs of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China
Shenggang Yin
Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, China Ministry of Agriculture and Rural Affairs of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China
Yan Liu
Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, China Ministry of Agriculture and Rural Affairs of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China
Yonggang Liu
Adisseo Asia Pacific Pte. Ltd., Singapore 188778, Singapore
Longqiong Wang
Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, China Ministry of Agriculture and Rural Affairs of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China
Jiayong Tang
Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, China Ministry of Agriculture and Rural Affairs of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China
Gang Jia
Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, China Ministry of Agriculture and Rural Affairs of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China
Guangmang Liu
Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, China Ministry of Agriculture and Rural Affairs of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China
Gang Tian
Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, China Ministry of Agriculture and Rural Affairs of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China
Xiaoling Chen
Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, China Ministry of Agriculture and Rural Affairs of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China
Jingyi Cai
Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, China Ministry of Agriculture and Rural Affairs of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China
Bo Kang
College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
Hua Zhao
Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, China Ministry of Agriculture and Rural Affairs of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China
This study used 40 castrated male pigs to determine the protective effects of a new selenium molecule (hydroxy selenomethionine, OH-SeMet) on dietary oxidative stress (DOS) induced hepatic lipid metabolism disorder, and corresponding response of selenotranscriptome. The pigs were randomly grouped into 5 dietary treatments and fed a basal diet formulated with either normal corn and oils or oxidized diet in which the normal corn and oils were replaced by aged corn and oxidized oils, and supplemented with OH-SeMet at 0.0, 0.3, 0.6 and 0.9 mg Se/kg for a period of 16 weeks (n = 8). The results showed that DOS induced liver damage, increased serum alanine aminotransferase (ALT) and alkaline phosphatase (ALP) levels, decreased serum triacylglycerol (TG) level, suppressed antioxidant capacity in the liver, and changed lipid metabolism enzyme activity, thus causing lipid metabolism disorder in the liver. The DOS-induced lipid metabolism disorder was accompanied with endoplasmic reticulum (ER) stress, changes in lipid metabolism-related genes and selenotranscriptome in the liver. Dietary Se supplementation partially alleviated the negative impact of DOS on the lipid metabolism. These improvements were accompanied by increases in Se concentration, liver index, anti-oxidative capacity, selenotranscriptome especially 11 selenoprotein-encoding genes, and protein abundance of GPX1, GPX4 and SelS in the liver, as well as the decrease in SelF abundance. The Se supplementation also alleviated ER stress, restored liver lipid metabolism enzyme activity, increased the mRNA expression of lipid synthesis-related genes, and decreased the mRNA levels of lipidolysis-related genes. In conclusion, the dietary Se supplementation restored antioxidant capacity and mitigated ER stress induced by DOS, thus resisting hepatic lipid metabolism disorders that are associated with regulation of selenotranscriptome.
