Skip to main content
. 2014 Jun 3;6:103. doi: 10.3389/fnagi.2014.00103

Figure 4.

Figure 4

SIRT1 protects telomere DNA damage in MSCs. Representative immunofluorescence images of young (mock- and shSIRT1-) and aged MSCs (vector- and SIRT1) stained with γ-H2AX (Green), TRF2 (Red), and DAPI (Blue) (A). Quantitative analysis of γ-H2AX foci in young (mock- and shSIRT1-) (B) and aged MSCs (vector- and SIRT1-) (C) were shown. A cell was considered TIF positive if ≥50% of its γ-H2AX foci were associated with TRF2 (as shown in merged image). Quantitative analysis of TIF positive cells in young (mock- and shSIRT1-) (D) and aged MSCs (vector- and SIRT1-) (E) were shown. Data are expressed as mean ± SD (three independent experiments, n = 5 rats/group). *Implies P < 0.05, compared to mock-young MSCs. #, P < 0.05, compared to vector-aged MSCs.