Figure 4. Targeting dividing stem cells from P14–P21 leads to decreased DG neurogenesis, but does not deplete the stem cell pool in adulthood.
(A) Experimental timeline of P14–P21 VGCV treatment and TMX administration in GFAP-Tk/Nestin-CreERT2 mice. (B) Representative images of EYFP, DCX, NeuN, and GFAP staining in P14–P21 VGCV treated Tk− and Tk+ animals. (C) P14–P21 VGCV led to fewer EYFP+ cells in Tk+ versus Tk− males. (D) P14–P21 VGCV reduced the number of DCX+ immature and NeuN+DCX− mature neurons within the Nestin lineage of Tk+ compared to Tk− males. (E) P14–P21 VGCV led to fewer EYFP+ cells in Tk+ versus Tk− females. (F) P14–P21 VGCV reduced the number of DCX+ immature and NeuN+DCX− mature neurons within the Nestin lineage of Tk+ compared to Tk− females. (G) P14–P21 VGCV did not affect the number of RGLs, stellate astrocytes, or atypical astrocytes in the lineage of Tk+ males and (H) females compared to Tk− animals. (I) P14–P21 VGCV did not change the number of Nestin-S100β-, Nestin+S100β- or S100β+ RGLs in the Nestin lineage of Tk+ males and (J) females compared to Tk− animals. Scale bar represents 150 μM. GFAP inset is at 2× magnification. Data are expressed as mean ± SEM. *p≤0.05, **p<0.01, ***p<0.001
