Correction to: PARP1 inhibitor (PJ34) improves the function of aging-induced endothelial progenitor cells by preserving intracellular NAD+ levels and increasing SIRT1 activity.

The original article [1] contains an error regarding the erroneous inclusion of 3 μl as a parameter in the x-axis of Fig. 2c; the correct version of Fig. 2c can instead be seen below.

Correction

The original article [1] contains an error regarding the erroneous inclusion of 3 μl as a parameter in the x-axis of Fig. 2c; the correct version of Fig. 2c can instead be seen below.

Fig. 2

Effects of H2O2 and PJ34 treatment on EPC protein expression. a, b Expression of sirtuin 1 (SIRT1), poly (ADP-ribose) polymerase 1 (PARP1), and poly ADP-ribose (PAR) as analyzed by Western blot. c, d Expression of PARP1, PAR, and acetylated (ac)-p53 as analyzed by Western blot. *P < 0.05, **P < 0.01, ***P < 0.001, versus the control