1. Protein acetylation in mitochondria plays critical functions in the pathogenesis of fatty liver disease
- Author
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Su Zhong-qu, Zhang Le-tian, Wei Qing-qing, Wang Zhong-hua, Hu Cheng-zhang, Qin Zhang, Zhang Xuan, Liu Ting-jun, Shi Ke-rong, Li Ran-ran, Xu Zhong-jin, Wang Sheng-xuan, and Yan ZhenGui
- Subjects
Proteomics ,lcsh:QH426-470 ,lcsh:Biotechnology ,Cattle Diseases ,Mitochondria, Liver ,Mitochondrion ,Biology ,Biological pathway ,Pathogenesis ,Mitochondrial Proteins ,03 medical and health sciences ,Acetylome ,Tandem Mass Spectrometry ,lcsh:TP248.13-248.65 ,Genetics ,medicine ,Dairy cattle ,Animals ,Protein Interaction Maps ,030304 developmental biology ,0303 health sciences ,Fatty liver ,0402 animal and dairy science ,Computational Biology ,Lipid metabolism ,Acetylation ,04 agricultural and veterinary sciences ,medicine.disease ,Lipid Metabolism ,040201 dairy & animal science ,Fatty Liver ,lcsh:Genetics ,Biochemistry ,Perinatal period ,Case-Control Studies ,Cattle ,Female ,Energy Metabolism ,Drug metabolism ,Biotechnology ,Research Article ,Chromatography, Liquid - Abstract
Background Fatty liver is a high incidence of perinatal disease in dairy cows caused by negative energy balance, which seriously threatens the postpartum health and milk production. It has been reported that lysine acetylation plays an important role in substance and energy metabolism. Predictably, most metabolic processes in the liver, as a vital metabolic organ, are subjected to acetylation. Comparative acetylome study were used to quantify the hepatic tissues from the severe fatty liver group and normal group. Combined with bioinformatics analysis, this study provides new insights for the role of acetylation modification in fatty liver disease of dairy cows. Results We identified 1841 differential acetylation sites on 665 proteins. Among of them, 1072 sites on 393 proteins were quantified. Functional enrichment analysis shows that higher acetylated proteins are significantly enriched in energy metabolic pathways, while lower acetylated proteins are significantly enriched in pathways related to immune response, such as drug metabolism and cancer. Among significantly acetylated proteins, many mitochondrial proteins were identified to be interacting with multiple proteins and involving in lipid metabolism. Furthermore, this study identified potential important proteins, such as HADHA, ACAT1, and EHHADH, which may be important regulatory factors through modification of acetylation in the development of fatty liver disease in dairy cows and possible therapeutic targets for NAFLD in human beings. Conclusion This study provided a comprehensive acetylome profile of fatty liver of dairy cows, and revealed important biological pathways associated with protein acetylation occurred in mitochondria, which were involved in the regulation of the pathogenesis of fatty liver disease. Furthermore, potential important proteins, such as HADHA, ACAT1, EHHADH, were predicted to be essential regulators during the pathogenesis of fatty liver disease. The work would contribute to the understanding the pathogenesis of NAFLD, and inspire in the development of new therapeutic strategies for NAFLD.
- Published
- 2020