title: Overexpression of Sirt3 inhibits lipid accumulation in macrophages through mitochondrial IDH2 deacetylation.
abstract: This study aims to explore the relationship between Sirt3 expression and lipid accumulation in macrophages by inducing mitochondrial IDH2 deacetylation. In this study, Sirt3 interference and overexpression lentiviral vectors were constructed. Macrophages collected from C57BL/6J mice by peritoneal lavage were used to construct Sirt3 gene interference and overexpression models, and cultured in medium containing 1 mg/ml ox-LDL for 72 h to observe the enrichment of ox-LDL. Reverse transcription PCR was used to detect the expression of Sirt3 mRNA, western blot to detect Sirt3 and acetylated IDH2 proteins, and Nile Red staining and flow cytometry to detect intracellular lipids in macrophages. The results indicated that as compared to Sirt3 overexpressed and normal groups, the acetylation of IDH2 and accumulation of ox-LDL were significantly higher in the Sirt3 inhibited group. In conclusion, the expression of Sirt3 can inhibit lipid accumulation in macrophages by inducing mitochondrial IDH2 deacetylation.
authors.affiliation: The Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Chongqing Medical University Chongqing, China.
authors.forename: Shangchun
authors.initials: S
authors.lastname: Sheng
authors.affiliation: The Molecular Diagnosis Laboratory of No. 2 People's Hospital of Yibin Yibin, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Kang
authors.affiliation: The Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Chongqing Medical University Chongqing, China.
authors.forename: Yongchan
authors.initials: Y
authors.lastname: Guo
authors.affiliation: The Molecular Diagnosis Laboratory of No. 2 People's Hospital of Yibin Yibin, China.
authors.forename: Qinli
authors.initials: Q
authors.lastname: Pu
authors.affiliation: The Molecular Diagnosis Laboratory of No. 2 People's Hospital of Yibin Yibin, China.
authors.forename: Miao
authors.initials: M
authors.lastname: Cai
authors.affiliation: The Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Chongqing Medical University Chongqing, China.
authors.forename: Zhiguang
authors.initials: Z
authors.lastname: Tu
mesh_terms: D000107:Acetylation; D000818:Animals; D005260:Female; D007521:Isocitrate Dehydrogenase / Q000235:genetics / Q000378:metabolism*; D050356:Lipid Metabolism / Q000235:genetics*; D008077:Lipoproteins, LDL / Q000378:metabolism; D008264:Macrophages / Q000378:metabolism*; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D008928:Mitochondria / Q000235:genetics / Q000378:metabolism*; D018384:Oxidative Stress / Q000235:genetics; D056566:Sirtuin 3 / Q000235:genetics / Q000378:metabolism*
chemical_list: D008077:Lipoproteins, LDL; C525046:Sirt3 protein, mouse; C099252:oxidized low density lipoprotein; D007521:Isocitrate Dehydrogenase; C000599591:isocitrate dehydrogenase 2, mouse; D056566:Sirtuin 3
keywords: IDH2; Macrophages; Sirt3; mitochondria