Fig. 1. FMRP deficiency leads to increased NSC activation in the adult dentate gyrus. FMRP deficiency leads to increased NSC activation in the adult dentate.

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Fig. 1. FMRP deficiency leads to increased NSC activation in the adult dentate gyrus. FMRP deficiency leads to increased NSC activation in the adult dentate gyrus. (A) Schematic diagram showing stages of neurogenesis in the adult dentate gyrus and cell lineage–specific markers. qNSC, quiescent NSC; aNSC, activated NSC. (B and C) Quantitative comparison of the number of total GFP+ cells (B) and the density of GFP+ cells (C) in the dentate gyrus of adult Fmr1 KO mice and wild-type (WT) littermate controls. (D) Sample confocal images used in (E), (F), and (I) for identifying NSCs (GFP+GFAP+), progenitors (GFP+GFAP−), and activated NSCs (GFP+GFAP+MCM2+) in the dentate gyrus of adult Fmr1 KO mice and WT mice bred onto a Nestin-GFP mouse background. Blue, DAPI (4′,6-diamidine-2-phenylindole dihydrochloride); green, GFP; red, MCM2; white, GFAP. Scale bars, 20 μm. (E and F) Quantitative comparison of the number of NSCs (E) and IPCs (F) in the mouse dentate gyrus. (G and H) Sample confocal images (G) and quantitative comparison of the number of IPCs (GFP+TBR2+) in the adult mouse dentate gyrus. (I) Comparison of the percentage of activated NSCs (GFP+GFAP+MCM2+) among the total NSCs (GFP+GFAP+) in the mouse dentate gyrus. (J) Sample confocal images used in (K) and (L) for identifying proliferating (Ki67+) NSCs (GFP+GFAP+Ki67+) and progenitors (GFP+GFAP−Ki67+). Green, GFP; red, Ki67; white, GFAP; white arrowheads, proliferating NSCs; white arrows, proliferating IPCs. Scale bar, 20 μm. (K) Comparison of the percentage of proliferating NSCs among total NSCs in the mouse dentate gyrus. (L) Comparison of the percentage of proliferating progenitors among total progenitors. (M) Sample confocal images from Fmr1-cKO mice used for identifying activated NSCs (tdT+GFAP+MCM2+). Green, MCM2; red, tdT; white, GFAP. Scale bar, 20 μm. (N) Quantitative comparison of the total numbers of NSCs in the dentate gyrus of cKO::Cre::Ai14 mice and Cre::Ai14 control mice. (O) Comparison of the percentage of activated NSCs among total NSCs in the dentate gyrus (n = 6 per genotype). Student’s t tests were used for all data. **P < 0.01; ***P < 0.001. From (A) to (N), n = 5 per genotype. Data are presented as means ± SEM. Yue Li et al., Sci Transl Med 2016;8:336ra61 Published by AAAS