A) Representative western blots comparing protein degradation rates of MGMT, NDRG1, TFAM, LONP1, YTHDF1 and PGC1 in UM-HET3 fibroblasts, comparing untreated (controls) or 4EGI-1 treated cells at different time points during cycloheximide treatments. B) Mean ± S.E.M. of the half-life relative to actin for each protein from at least 3 independent fibroblast lines for each genotype of mice. Each symbol represents cells from a different mouse, while (*) indicates statistical significance (p<0.05) compared to controls. C) Effects of 4EGI-1 on stress resistance: LD50 (50% lethal dose) values for MMS and tunicamycin treatments in at least 4 experiments from at least 4 different mouse fibroblast donors. The (*) indicates statistical significance (p<0.05) relative to controls.