Journal: Nature Communications
Article Title: Nicotine rebalances NAD + homeostasis and improves aging-related symptoms in male mice by enhancing NAMPT activity
doi: 10.1038/s41467-023-36543-8
Figure Lengend Snippet: a Nuclear SIRTUIN (SIRT1, SIRT6, SIRT7) activity of aged mice brain with or without nicotine at 13 months of age ( n = 3, biologically independent samples/group). b Nicotine has no district effects on NAMPT-SIRT6/ SIRT7 interaction. c The total NAD + levels of SIRT1 knockdown cells after nicotine treatment ( n = 3, biologically independent samples/group). d Nicotine (10 ng/mL) has no district enhancement on SIRT1 interact with other substrates (p53, PGC-1, NF-κB). e The NAMPT inhibitor FK866 abolished the effect of nicotine ( n = 3, biologically independent samples/group). f SIRT1 inhibitor has no district effect on SIRT1-NAMPT interaction. g The effect of SIRT1 activator SRT1720 (2.5 μg/mL) and inhibitor Selisistat (5 μmol/L) on SIRT1-NAMPT interaction. h Cotinine has no effect on SIRT1-NAMPT interaction. All western blotting images and graphs are representative of three independent experiments. Data are means ± SEM. p values were determined by two-sided Student’s t test ( a ), or one-way ANOVA with Tukey’s multiple comparisons tests ( c , e ).
Article Snippet: HT22 cells were transfected with NAD + -NADH redox states fluorescent biosensor : pcDNA3.1-Peredox-mCherry (Addgene: #32383) and pcDNA3.1-Peredox-mCherry-NLS (Addgene: #32384).
Techniques: Activity Assay, Knockdown, Western Blot