Acetylated p53 is a known direct target of SIRT1 and showed a trend toward increased expression in LRRK2 G2019S iPSC-derived dopaminergic neurons compared with controls ( Figures 4 E and 4F), indicating reduced SIRT1 activity.
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Decreased Sirtuin Deacetylase Activity in LRRK2 G2019S iPSC-Derived Dopaminergic Neurons.
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We also found a strong trend toward increased acetylated p53 (∼2- to 3-fold) in LRRK2 G0291S iPSC-derived dopaminergic neurons compared with controls, a direct target of SIRT1, which may contribute to the vulnerability of dopaminergic neurons to oxidative stress in PD.