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. 2021 Feb 15;118(8):e2011491118. doi: 10.1073/pnas.2011491118

Fig. 2.

Fig. 2.

Overexpression of fkh in neurons, but not glia, extends lifespan independent of FOXO. (A) Images from the SCope database (33) show mRNA expression of fkh largely in nSyb-expressing (neuronal) cell populations in the Drosophila brain. (B) Immunofluorescence images from the cell body layer of the central brain show FKH expression in REPO-negative (neuronal) cells in wDah flies. (Scale bar, 10 μm.) (CE) Survival curves show (C) extended lifespan for wDah;UAS-fkh/+;elav-GS/+ flies, (D) no change in lifespan for wDah;UAS-fkh/+;GSG3285-1/+ flies, and (E) extended lifespan for both wDah;UAS-fkh/+;elav-GS/+ and wDah;UAS-fkh/+;elav-GS, foxoΔ/foxoΔ flies treated with 200 μM RU-486 from 2 d of age, with no significant interaction between fkh overexpression and foxoΔ genotype. For all survival experiments, n > 85 deaths were counted per condition; P values are from either log-rank tests between groups (C and D) or Cox proportional hazards testing (E).