Knocking down Stard3 decreases adipogenesis with decreased mitochondrial ROS in 3T3-L1 cells.

Start domain-containing protein 3 (Stard3) plays roles in intracellular cholesterol distribution, however, the role of Stard3 in the adipogenesis of 3T3-L1 preadipocytes remains unclear. We demonstrated that Stard3 expression was significantly increased during the adipogenesis of 3T3-L1 preadipocytes, accompanied by an increase of mitochondrial Reactive oxygen species Stard3 knocking-down inhibited 3T3-L1 preadipocyte adipogenesis with decreased mitochondrial levels, while duanyu1670 inducer rescued the stard3 silencing 3T3 cells with increased Moreover, Stard3 silencing reduced the expression of peroxisome proliferator-activated receptor-γ (PPARγ) and CCAAT/enhancer binding protein (C/EBP)α in 3T3- L1 cells. In conclusion, Stard3 enhanced the adipogenesis of preadipocytes by enhancement of cholesterol redistribution to the mitochondrial, increasing mitochondrial duanyu1670 production. These results suggest that Stard3 is an essential factor for the 3T3-L1 cells' differentiation.

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