Biological comparison of 149Pm-, 166Ho-, and 177Lu-DOTA-biotin pretargeted by CC49 scFv-streptavidin fusion protein in xenograft-bearing nude mice

Nucl Med Biol. 2004 Feb;31(2):213-23. doi: 10.1016/j.nucmedbio.2003.08.004.

Abstract

The radiolanthanides (149)Pm, (166)Ho, and (177)Lu possess a range of half-lives and alpha(-) beta(-) energies for targeted radiotherapy of cancer. (149)Pm-, (166)Ho-, and (177)Lu-DOTA-biotin were pretargeted to LS174T colorectal tumors in nude mice with CC49 scFvSA antibody-streptavidin fusion protein. Tumor uptakes of (149)Pm (22.9% ID/g), (166)Ho (30.2% ID/g), and (177)Lu (35.4% ID/g) peaked at 1-4 h. Rapid blood disappearance was accompanied by urinary excretion of 59-66% ID within 1 h. Biodistributions of these agents show promise for pretargeted radioimmunotherapy of cancer.

Publication types

  • Comparative Study
  • Evaluation Study
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Animals
  • Antibodies, Neoplasm / administration & dosage
  • Antibodies, Neoplasm / metabolism*
  • Biotin / administration & dosage
  • Biotin / analogs & derivatives*
  • Biotin / pharmacokinetics*
  • Cell Line, Tumor
  • Colonic Neoplasms / metabolism*
  • Colonic Neoplasms / radiotherapy
  • Drug Delivery Systems / methods*
  • Holmium / administration & dosage
  • Holmium / pharmacokinetics
  • Humans
  • Immunoglobulin Fragments / administration & dosage
  • Immunoglobulin Fragments / metabolism
  • Injections, Intravenous
  • Lutetium / administration & dosage
  • Lutetium / pharmacokinetics
  • Metabolic Clearance Rate
  • Mice
  • Mice, Nude
  • Organ Specificity
  • Organometallic Compounds / administration & dosage
  • Organometallic Compounds / pharmacokinetics*
  • Promethium / administration & dosage
  • Promethium / pharmacokinetics
  • Radioimmunotherapy / methods*
  • Radioisotopes / administration & dosage
  • Radioisotopes / pharmacokinetics*
  • Radiopharmaceuticals / administration & dosage
  • Radiopharmaceuticals / pharmacokinetics
  • Recombinant Fusion Proteins / administration & dosage
  • Recombinant Fusion Proteins / pharmacokinetics
  • Streptavidin / administration & dosage
  • Streptavidin / pharmacokinetics*
  • Tissue Distribution

Substances

  • Antibodies, Neoplasm
  • B72.3 antibody
  • DOTA-biotin
  • Immunoglobulin Fragments
  • Organometallic Compounds
  • Radioisotopes
  • Radiopharmaceuticals
  • Recombinant Fusion Proteins
  • Lutetium
  • Biotin
  • Streptavidin
  • Holmium
  • Promethium