Poly(ADP-ribose) Polymerase in Neurodegeneration: Radiosynthesis and Radioligand Binding in ARC-SWE tg Mice
作者:Santosh R. Alluri、Patrick J. Riss
DOI:10.1021/acschemneuro.8b00053
日期:2018.6.20
We report the synthesis, radiosynthesis, and characterization of a radioligand for poly(ADP-ribose) polymerase (PARP). PARP is of central importance in cell homeostasis, neuroplasticity, and neurodegeneration in the brain. A radiolabeled PARP inhibitor was developed and used for autoradiographic quantification of PARP protein concentration in wild-type and transgenic rodent brains ex vivo in high resolution. The binding of [H-3]rucaparib was found to be confined to PARP-expressing domains, for example, cerebellar cortex or hippocampal regions in both models. Saturation binding experiments confirmed selective and reversible binding to a single site (K-d = 1.1 +/- 0.2 nM).