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. 2019 Jan 15;10(2):34. doi: 10.1038/s41419-018-1169-6

Fig. 6. Sirt3 directly deacetylated FoxO3a to protect TEC from apoptosis and necrosis.

Fig. 6

a Immunoprecipitation assays demonstrated that Sirt3 overexpression via resveratrol treatment decreased acetylated FoxO3a expression in the kidney in vivo. b Similarly, overexpression of Sirt3 in TEC in vitro significantly decreased the FoxO3a acetylation level under CaOx stimulation. c Immunofluorescence assays indicated that Sirt3 interacted with FoxO3a most abundantly around the nucleus (DAPI: blue, FoxO3a: green and Sirt3: red). Scale bar: 60 μm. d Co-immunoprecipitation (co-IP) assays confirmed the interaction between Sirt3 and FoxO3a. e Overexpression of a catalytic mutant of Sirt3 (Sirt3H248Y) did not influence FoxO3a acetylation. f Overexpression of Sirt3H248Y did not reduce ROS activity in TEC. g Overexpression of Sirt3H248Y did not decrease TEC necrosis under CaOx stimulation. h Overexpression of Sirt3H248Y increased cleaved caspase-3 and Bax expression and reduced Bcl-2 expression. Data are shown as the means ± S.D.; n = 6 mice per group for an in vivo experiment. n = 3 per group for an in vitro experiment