Journal: Nature Communications
Article Title: IL-1β promotes adipogenesis by directly targeting adipocyte precursors
doi: 10.1038/s41467-024-51938-x
Figure Lengend Snippet: a – d Body weight development ( a ), body weight ( b ), fat pad mass ( c , d ) of 17-week-old chow and HFD-fed male mice. n = 12 WT-CD, n = 12 IL1R1-KO-CD, n = 14 WT-HFD, n = 14 IL1R1-KO-HFD. e – h Adipocyte size distribution ( e – h ) of 17-week-old chow and HFD-fed male mice. n = 10 IL1R1-WT-CD, n = 12 IL1R1-KO-CD ( e ). n = 14 per genotype ( f ). n = 12 IL1R1-WT-CD, n = 10 IL1R1-KO-CD ( g ). n = 14 IL1R1-WT-HFD, n = 13 IL1R1-KO-HFD (h). i – n Body weight development ( i ), body weight ( j ), fat pad mass ( k, l ) and adipocyte size distribution ( m, n ) of 17-week-old HFD-fed male mice treated with IL-1Ra (10 mg/kg bw daily for 14 days, n = 16 for both conditions). o , p Relative Il1r1 mRNA expression in adipocytes, CD45 – , and CD45 + stromal vascular cells isolated from gWAT ( o ) and scWAT ( p ) of 12-week-old chow-fed male WT mice (n = 5). q – s Experimental scheme of EdU tracing experiments (100 μg EdU/day, every 2 days, total of 4 injections) ( q ) and percentage of EdU + adipocyte nuclei isolated from gWAT ( r ) and scWAT ( s ) of IL1R1-KO mice and WT controls. gWAT IL1R1-KO and gWAT WT: chow diet (n = 12 per genotype); HFD (n = 14 per genotype). scWAT IL1R1-KO and scWAT WT: chow diet (n = 11 per genotype); HFD (n = 12 per genotype). t – v Experimental scheme of EdU tracing experiments (100 μg EdU/day, every 2 days, total 4 injections) and IL-1Ra therapy (10 mg/kg bw daily for 14 days) ( t ) and percentage of EdU + adipocyte nuclei isolated from gWAT ( u ) and scWAT ( v ) of HFD-fed WT mice. gWAT: saline and IL-1Ra (n = 16). scWAT: saline (n = 16); IL-1Ra (n = 13). Scale bar = 200 µm. Experimental schemes created with biorender.com. n = biological replicates. Data are shown as individual measurements and mean ± SEM. Statistical analyses were performed by: unpaired nonparametric two-tailed Mann-Whitney U test ( j – l , u , v ); one-way ANOVA and Šidák’s multiple comparison test ( o , p ); or two-way ANOVA and Šidák’s ( a , e – i , m , n ) or Fisher’s LSD ( b – d , r , s ) multiple comparison test. Source data are provided as a Source Data File.
Article Snippet: WT mice were: injected with 100 µg EdU every 2 days, for 7 days (day 1 to day 7); daily treated with 10 mg/kg body weight IL-1Ra (Anakinra, Kineret, Sobi, Germany) at 4–6 pm, for 14 days (day 1 to day 14); HFD-fed for 9 weeks (starting at day 3).
Techniques: Expressing, Isolation, Saline, Two Tailed Test, MANN-WHITNEY, Comparison