Journal: Neuron
Article Title: Alpha-synuclein mutations mislocalize cytoplasmic p300 compromising autophagy, which is rescued by ACLY inhibition.
doi: 10.1016/j.neuron.2025.03.028
Figure Lengend Snippet: Figure 6. ACLY inhibition rescues a-Syn-induced pathology in SNCA zebrafish model (A) Failure of nuclear translocation of p300 by A53T a-Syn expression. Representative images of antibody staining for a-Syn, p300, and DAPI were performed on cryosections across the spinal cord of transgenic Dendra-a-SYN_WT and A53T fish with mosaic expression of the transgene at 2 d.p.f. n = 14 fish per group, two- tailed unpaired t test. *p < 0.05 vs. Dendra-a-SYN _WT. Scale bar, 5 mm. (B) Enhanced mTORC1 activity in fish expressing human A53T a-Syn mutation. Representative images and quantification of S6K1 and p-S6K1 western blots to measure mTORC1 activity in fish with pan-neuronal expression of Dendra-a-SYN_WT and A53T at 2 d.p.f. n = 12 independent clutches, two-tailed unpaired t test. *p < 0.05 vs. Dendra-a-SYN_WT. (C) Inhibition of autophagic flux in fish carrying the A53T mutation. Representative images and quantification of western blots for the levels of LC3-II in fish with pan-neuronal expression of Dendra-a-SYN_WT or A53T at 2 d.p.f. in basal conditions and after treatment with 10 mM NH4Cl for 4 h. Graph represents the ratios of LC3-II vs. actin normalized to a single negative sibling control run in all blots. The same sample from a negative sibling was run in parallel on every gel and used for
Article Snippet: The following DNA or siRNA/shRNA constructs were also used: empty pEGFP from Clontech; pcDNA3.1-myc-6XHis from Invitrogen; pcDNA3.1-p300 (#23252), pcDNA3.1-p300 dominantnegative (DN;HAT-) (#23254), pSG5-HA-p300 (#89094), pRK5-HA-YFP-raptor (#73385), pRK5-HA-raptor (#8513), pcDNA3-AMPKa2 WT (#15991), pcDNA3-AMPKa2 K45R (#15992), pcDNA3-FLAG-LKB1 (#8590), pHM6-HTT(Q74)-HA (#40264), pEGFP-C1-a-Syn wt (#40822), pEGFP-C1-a-Syn-A53T (#40823) from Addgene. pCMV6-Myc-DDK-ACLY (#RC200508) from Origene.
Techniques: Inhibition, Translocation Assay, Expressing, Staining, Transgenic Assay, Two Tailed Test, Activity Assay, Mutagenesis, Western Blot, Control