Journal: bioRxiv
Article Title: Intrinsic regulation of intestinal stem cell fate and homeostasis by Tet
doi: 10.64898/2026.05.05.722984
Figure Lengend Snippet: Developmental depletion of Tet causes anterior-specific loss of ISCs and reduces adult lifespan. (A) Representative confocal images of whole midguts from control ( Luc RNAi ) and Tet RNAi adult flies driven by esg-Gal4, UAS-nGFP . Loss of ISCs/EBs (green) is restricted to the anterior midgut. (B) High-magnification images of the anterior and posterior midgut compartments across three independent Tet RNAi lines. (C) Quantification of ISC/EB percentage (GFP+/DAPI) in the anterior and posterior midgut. (D) Confirmation of ISC loss using the endogenous Tet-Gal4 T2A driver crossed with UAS-mCherry.nls and stained for the ISC marker Delta (green). (E) Quantification of ISC percentage (Delta+/DAPI) in the anterior midgut. (F) Survival curve of adult flies exposed to paraquat-induced oxidative stress over 48 hours. Tet RNAi n=54, Luciferase RNAi n=53. (G) Lifespan analysis comparing control and Tet RNAi adult flies. Tet RNAi #1 n=247, Tet RNAi #2 n=118, Luciferase RNAi n=240. Lifespans were analyzed with OASIS 2. Bars represent mean ± SD. *p ≤ 0.05, **p ≤ 0.01, ***p ≤ 0.001. p values were from unpaired Student’s t-test.
Article Snippet: Additional lines included UAS - Tet (from Dahua Chen, Zheng et al. 2015), Tet-Gal4 T2A (BDSC #76666), 10xStatGFP (BDSC #26198), UAS-redstinger, UAS-Flp, Ubi-FRT.stop.GFP/cyo (G-TRACE, BDSC #28280), UAS-Luciferase RNAi (BDSC #31603), UAS-empty (from Hugo Bellen, Moulton et al. 2021), esgF/O ts (from Bruce Edgar, ), esg-Gal4, UAS-nGFP (from Lucy O’Brien), NRE-LacZ; esg-Gal4, UAS-nGFP and esg-Gal4, UAS-GFP; tub-Gal80ts (from Heinrich Jasper), esg-Gal4 (from Shigeo Hayashi, Hayashi et al. 2002), UAS-mCherry.nls (BDSC #38424), T2A-ATP8B (BDSC #91431), Cut-Gal4 (BDSC #27327), Ara-GFP (BDSC #93570), and T2A-Lerp (BDSC #77798).
Techniques: Control, Staining, Marker, Luciferase