Selective tumor localization of radiolabeled anti-human melanoma monoclonal antibody fragment demonstrated in the nude mouse model

Journal Article · Fri Aug 01 00:00:00 EDT 1986 · Cancer (Philadelphia); (United States)

DOI:https://doi.org/10.1002/1097-0142(19860801)58:3<655::AID-CNCR2820580310>3.0.CO;2-E· OSTI ID:5020489

Buchegger, F; Mach, J P; Leonnard, P; Carrel, S

Monoclonal antibodies (Mab) directed against distinct epitopes of the human 240 kD melanoma-associated antigen have been evaluated for their capacity to localize in human melanoma grafted into nude mice. A favorable tumor to normal tissue ratio of 13 was obtained with intact 131I-labeled MAb Me1-14. This ratio was further increased to 43 and 23 by the use of F(ab')2 and Fab fragments, respectively. The specificity of tumor localization was demonstrated by the simultaneous injection of F(ab')2 fragments from MAb Me1-14 and anti-CEA MAb 35, each labeled with a different iodine isotope, into nude mice grafted with a melanoma and colon carcinoma. The fragments from both MAb localized with perfect selectivity in their relevant tumor as shown by differential whole body scanning and by direct measurement of the two isotopes in tumors and normal tissues. These in vivo experimental results suggest that the F(ab')2 fragment from MAb Me1-14 is suitable for melanoma detection by immunoscintigraphy in patients.

• Research Organization: Ludwig Institute for Cancer Research, Epalinges, Switzerland
• OSTI ID: 5020489
• Journal Information: Cancer (Philadelphia); (United States), Vol. 3
• Country of Publication: United States
• Language: English

Related Subjects

62 RADIOLOGY AND NUCLEAR MEDICINE
MONOCLONAL ANTIBODIES
DIAGNOSTIC USES
EXPERIMENTAL NEOPLASMS
IODINE 131
LABELLED COMPOUNDS
MELANOMAS
MICE
MOLECULAR WEIGHT
SCINTISCANNING
ANIMALS
ANTIBODIES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
COUNTING TECHNIQUES
DAYS LIVING RADIOISOTOPES
DIAGNOSTIC TECHNIQUES
DISEASES
INTERMEDIATE MASS NUCLEI
IODINE ISOTOPES
ISOTOPES
MAMMALS
NEOPLASMS
NUCLEI
ODD-EVEN NUCLEI
RADIOISOTOPE SCANNING
RADIOISOTOPES
RODENTS
USES
VERTEBRATES
550601* - Medicine- Unsealed Radionuclides in Diagnostics