Research Paper Volume 6, Issue 12 pp 1094—1108

Aged iPSCs display an uncommon mitochondrial appearance and fail to undergo in vitro neurogenesis

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Figure 1. Characterization of mitochondria in y- and a-iPSCs in proliferating condition and during in vitro neurogenesis.

(A, B) Immunofluorescence analysis of mitochondria (red) in y-iPSCs (A) and in a-iPSCs (B) with nuclei counterstained with Hoechst (blue). On the right side of each photograph a higher magnification of the mitochondria is reported, mitochondria are colored in white and the perimeter is highlighted in red for better morphological visualization. Scale bar: 10 μm. (C) Quantification of the TUNEL assay in y- and a-iPSCs before and during neuronal differentiation. The bar graph represents quantitative data (expressed in % of TUNEL assay positive cells) of y-iPSCs and a-iPSCs. Data represent the mean ± SD of 3 experiments.