Positron emission tomography imaging of cell death with [(18)F]FPDuramycin

Apoptosis. 2014 May;19(5):841-50. doi: 10.1007/s10495-013-0964-x.

Abstract

The noninvasive imaging of cell death, including apoptosis and necrosis, is an important tool for the assessment of degenerative diseases and in the monitoring of tumor treatments. Duramycin is a peptide of 19-amino acids. It binds specifically to phosphatidylethanolamine a novel molecular target for cell death. N-(2-(18)F-Fluoropropionyl)duramycin ([(18)F]FPDuramycin) was prepared as a novel positron emission tomography (PET) tracer from the reaction of duramycin with 4-nitrophenyl 2-[(18)F]fluoropropionate ([(18)F]NFP). Compared with control cells (viable tumor cells), the in vitro binding of [(18)F]FPDuramycin with apoptotic cells induced by anti-Fas antibody resulted in a doubling increase, while the binding of [(18)F]FPDuramycin with necrotic cells induced by three freeze and thaw cycles resulted in a threefold increase. Biodistribution study in mice exhibited its rapid blood and renal clearance and predominant accumulation in liver and spleen over 120 min postinjection. Small-animal PET/CT imaging with [(18)F]FPDuramycin proved to be a successful way to visualize in vivo therapeutic-induced tumor cell death. In summary, [(18)F]FPDuramycin seems to be a potential PET probe candidate for noninvasive visualization of in vivo cell death sites induced by chemotherapy in tumors.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Apoptosis
  • Bacteriocins / chemical synthesis
  • Bacteriocins / chemistry*
  • Bacteriocins / pharmacokinetics
  • Cell Death*
  • Female
  • Humans
  • Jurkat Cells
  • Mice
  • Mice, Nude
  • Molecular Imaging*
  • Peptides / chemical synthesis
  • Peptides / chemistry*
  • Peptides / pharmacokinetics
  • Positron-Emission Tomography*
  • Radiopharmaceuticals / chemical synthesis
  • Radiopharmaceuticals / chemistry*
  • Radiopharmaceuticals / pharmacokinetics
  • Tissue Distribution

Substances

  • Bacteriocins
  • N-(2-fluoropropionyl)duramycin
  • Peptides
  • Radiopharmaceuticals