| Literature DB >> 24503274 |
Dong Zhou1, Wenhua Chu1, Jinbin Xu1, Lynne A Jones1, Xin Peng1, Shihong Li1, Delphine L Chen1, Robert H Mach2.
Abstract
Imaging of poly (ADP-ribose) polymerase-1 (PARP-1) expression in vivo is a potentially powerful tool for developing PARP-1 inhibitors for drug discovery and patient care. We have synthesized several derivatives of benzimidazole carboxamide as PARP-1 inhibitors, which can be (18)F-labeled easily for positron emission tomographic (PET) imaging. Of the compounds synthesized, 12 had the highest inhibition potency for PARP-1 (IC50=6.3 nM). [(18)F]12 was synthesized under conventional conditions in high specific activity with 40-50% decay-corrected yield. MicroPET studies using [(18)F]12 in MDA-MB-436 tumor-bearing mice demonstrated accumulation of [(18)F]12 in the tumor that was blocked by olaparib, suggesting that the uptake of [(18)F]12 in the tumor is specific to PARP-1 expression.Entities:
Keywords: Imaging; PARP-1; PET; Radiolabeling
Mesh:
Substances:
Year: 2014 PMID: 24503274 PMCID: PMC4020173 DOI: 10.1016/j.bmc.2014.01.019
Source DB: PubMed Journal: Bioorg Med Chem ISSN: 0968-0896 Impact factor: 3.641