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. 2020 Oct 27;9:e56969. doi: 10.7554/eLife.56969

Figure 3. Oenocyte-specific Pi3K/Akt1/TOR signaling protects against obesity.

(A) BODIPY staining showing neutral lipid accumulation in the adipose tissue and oenocytes of control males (oenots = oenocyte-Gal4Gal80ts) and males with oenocyte-specific knockdown of ERK (oenots>ERKi-1 and oenots>ERKi-2) using two independent RNAi lines. (B) BODIPY staining showing neutral lipid accumulation in the adipose tissue and oenocytes of control males (oenots) and males with oenocyte-specific over-expression of tsc1 and tsc2 (oenots>tsc1,tsc2). (C) Mean lipid droplet size (≥10 microns in diameter) in the adipose tissue of flies shown in Figure 2A and B. Only oenocyte-specific loss of TOR signaling (oenots>tsc1,tsc2) show a significant increase (p<0.001) compared to the control genotype. N = 6 animals, One-way ANOVA followed by Tukey’s HSD test, **** denotes p≤0.0001, error bars = SEM. (D) BODIPY staining showing neutral lipid accumulation in the adipose tissue and oenocytes of control males (oenots) and males with oenocyte-specific over-expression of inrDN (oenots>inrDN) and oenocyte-specific (oenots>) knockdown of Pi3K92E (Dp110), Pi3K21B (Dp60) and akt1. (E) Mean lipid droplet size (≥10 microns in diameter) in the adipose tissue of flies shown in Figure 2D. Oenocyte-specific (oenots>) knockdown of Pi3K92E (Dp110), Pi3K21B (Dp60), and akt1 lead to a significant increase (p<0.001 for Pi3K92E, and, p<0.0001 for Pi3K21B and akt1) compared to the control genotype. N = 6 animals, One-way ANOVA followed by Tukey’s HSD test, *** denotes p≤0.001, **** denotes p≤0.0001, error bars = SEM.

Figure 3.

Figure 3—figure supplement 1. Oenocyte-specific loss of only Pi3K92E and Pi3K21B leads to obesity.

Figure 3—figure supplement 1.

BODIPY staining showing neutral lipid accumulation in the adult male adipose tissue and oenocytes (dorsal abdominal cuticle) of control (oenots = oenocyte-Gal4Gal80ts) flies and flies with oenocyte-specific (oenots>) knockdown of: Pi3K92E; Pi3K21B, Pi3K59F and Pi3K68D.