(A) HDF behavior in flies was tested using the schematic in (A). After aging flies for 7 days on normal lab food, flies we subject to a normal diet or an HSD (30% more sugar in food) for a duration …
w1118 hunger-driven feeding responses related to Figure 1B–D.
Change in w1118 triacylglyceride (TAG) levels after 16 hr of starvation related to Figure 1E–G.
w1118 hunger-driven feeding responses on high-sugar diet (HSD) related to Figure 1H.
Triacylglyceride (TAG) levels of 14-day high-sugar diet (HSD)-fed w1118 flies related to Figure 1I.
Normalized triacylglyceride (TAG) levels of 14-day high-sugar diet (HSD)-fed w1118 flies related to Figure 1J.
(left) Average feeding events over time for normal food (NF) flies that were either fed or starved with 0% sucrose agar (stv) for 16 hr prior to measurement. Note that HDF is maintained throughout …
w1118 hunger-driven feeding responses on normal food (NF) and high-sugar diet (HSD) related to Figure 1—figure supplement 1A.
Average TAG/fly levels in NF (black line) and HSD (blue line) groups over time. N = 9/group. Two-way ANOVA with Sidak post-test correction. Asterisks indicate significant changes with p-value<0.05, …
Triacylglyceride (TAG) levels of normal food (NF) and high-sugar diet (HSD)-fed w1118 flies over time at baseline.
(A, left) Representative confocal images of Dilp5 accumulation in insulin-producing cells (IPCs) of normal food (NF) flies (top panel) and HSD-fed flies on day 14 (bottom panel). (A, right) Mean …
Drosophila insulin-like peptide 5 (Dilp5) accumulation in insulin-producing cell (IPC) after 14 days on normal food (NF)/high-sugar diet (HSD).
Forkhead box O (FOXO) accumulation in w1118 (14 days after diet treatment).
Mean fold change in Dilp 2 and Dilp 5 expression in w1118 flies fed either a normal food (NF) or an HSD for 14 days. N = 3 technical replicates of cDNA collected from 30 flies/treatment. t-test with …
Drosophila insulin-like peptide (Dilp) 2 and 5 mRNA expression levels in w1118.
Representative confocal images of nuclear FOXO accumulation in the fat bodies of normal food (NF) (top panel) and HSD-fed flies for 6 hr (bottom panel). The nuclei are marked with anti-lamin …
Forkhead box O (FOXO) accumulation in w1118 (6 hr after diet treatment).
Average concentrations of phosphatidylcholine (PC), phosphatidylethanolamine (PE), lysophosphatidylcholine (LPC), and lysophosphatidylethanolamine (LPE) in flies subjected to normal food (NF) …
Lipidomics data for lipid classes of normal food (NF) and high-sugar diet (HSD)-fed flies on day 7 presented in Figure 3 and Figure 3—figure supplement 1.
Lipidomics data for lipid classes of normal food (NF) and high-sugar diet (HSD)-fed flies on day 14 presented in Figure 3 and Figure 3—figure supplement 1.
(A) Changes in triacylglyceride (TAG), diacylglyceride (DAG), free fatty acid (FFA), Cholesterol Ester (CE), and Sphingomyelin (SM) concentration after 7 and 14 days of normal food (NF) and HSD …
(A–C, left) Representative confocal images of ApoII (red) levels in the insulin-producing cells (IPCs) (blue) of (A) normal food (NF) and HSD-fed flies on day 14, (B) flies with a fat-specific …
ApoII accumulation in the insulin-producing cells (IPCs) of normal food (NF) and high-sugar diet (HSD)-fed w1118 flies.
ApoII accumulation in the insulin-producing cells (IPCs) of phosphatidylethanolamine (PE) knockdown flies.
ApoII accumulation in the insulin-producing cells (IPCs) of Pect overexpression flies.
Representative confocal images of LppGal4>UAS-HA-Apolpp-myc fly fat body stained for ApoII antibody (green), HA antibody (red), and a merge of the two images. Note colocalization of HA and ApoII.
(A, left) Representative confocal images of Lpp-Gal4>UAS-Luc-RNAi and Lpp-Gal4>UAS-Pect-RNAi fly fat immunostained with anti-FOXO antibody (blue to green, intensity-based) and lamin (pink) on day …
Nuclear forkhead box O (FOXO) accumulation in LppGal4>Pect-RNAi fat.
(A) Average concentrations of phosphatidylcholine (PC), phosphatidylethanolamine (PE), lysophosphatidylcholine (LPC), and lysophosphatidylethanolamine (LPE) lipid classes in LppGal4>UAS-Pect-RNAi …
Lipidomics for fat-specific Pect knockdown and Pect overexpression on normal food.
Relevant to Figure 6, Figure 6—figure supplements 2–4.
(A) Mean fold change in Pect mRNA levels in the fat-specific (left) Pect knockdown flies and (right) Pect overexpression flies. Unpaired t-test with Welch’s correction. (B) Mean fold change in Pect …
Pect expression in RNAi and OE lines related to Figure 6—figure supplement 1A.
Pect expression in RNAi and OE lines related to Figure 6—figure supplement 1B.
Pect expression in w1118 at different normal food (NF) and high-sugar diet (HSD) timepoints related to Figure 6—figure supplement 1B.
Percent lipid composition for all (A) phosphatidylcholine (PC) and (B) phosphatidylethanolamine (PE) classes in normal food (NF)-fed flies overtime. Note that the overall composition does not change …
Average concentrations of triacylglyceride (TAG), CE, diacyl glyceride (DAG), SM, and free fatty acid (FFA) lipid classes in LppGal4>UAS-Pect-RNAi flies compared to control under 7-day normal food …
Average concentrations of phosphatidylcholine (PC), phosphatidylethanolamine (PE), CE, lysophosphatidylcholine (LPC), lysophosphatidylethanolamine (LPE), SM, triacylglyceride (TAG), diacylglyceride …
(A) A simplified schematic of the phosphatidylethanolamine (PE) and phosphatidylcholine (PC) biosynthesis pathway. eas and Pect are enzymes in the PE biosynthesis pathway, whereas PCYT2 is an enzyme …
Day 14 feeding behavior in phosphatidylethanolamine (PE)/phosphatidylcholine (PC) biosynthesis enzymes fat-specific knockdown flies relevant to Figure 7A.
Pect fat-specific overexpression of hunger-driven feeding behavior (normal food [NF] and high-sugar diet [HSD]) relevant to Figure 7B.
We identify that fat-specific knockdown of the rate-limiting phosphatidylethanolamine (PE) synthesis enzyme, Pect, even on normal diet, phenocopies the metabolic effects of subjecting flies to …
(A) Feeding events of 14-day HSD-fed flies at various starvation times. (B) TAG stores of 14-day HSD-fed flies at various starvation times. (C) Normalized TAG of 14-day HSD-fed flies at various …