rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
5
|
pubmed:dateCreated |
1989-6-22
|
pubmed:abstractText |
The biodistribution of yttrium- and indium-labeled monoclonal antibody (MAb) B72.3 IgG using three different chelate conjugates (SCN-Bz-EDTA, CA-DTPA, and SCN-Bz-DTPA) was compared in athymic mice bearing LS-174T tumors. The 88Y-SCN-Bz-DTPA-B72.3 yielded 40% ID/g at 5-7 days in the tumors, while the 88Y-SCN-Bz-EDTA-B72.3 and 88Y-CA-DTPA-B72.3 showed only 6-8% ID/g. The yttrium uptake in the bone with the SCN-Bz-EDTA and CA-DTPA conjugated IgG was over 14 and 11% ID/g, respectively, while 88Y-SCN-Bz-DTPA-B72.3 showed only 3% ID/g. In contrast, the 111In-labeled B72.3 uptake in the bone with all three chelate conjugates was 2-3% ID/g. The differences in yttrium- versus indium-labeled MAb biodistributions demonstrate the difficulty in using 111In-labeled MAbs to predict the biodistribution and dosimetry of 90Y-labeled MAbs unless chelate conjugates such as SCN-Bz-DTPA are used.
|
pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
May
|
pubmed:issn |
0161-5505
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:volume |
30
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
672-82
|
pubmed:dateRevised |
2006-11-15
|
pubmed:meshHeading |
pubmed-meshheading:2785585-Animals,
pubmed-meshheading:2785585-Antibodies, Monoclonal,
pubmed-meshheading:2785585-Carcinoma,
pubmed-meshheading:2785585-Chelating Agents,
pubmed-meshheading:2785585-Colonic Neoplasms,
pubmed-meshheading:2785585-Female,
pubmed-meshheading:2785585-Humans,
pubmed-meshheading:2785585-Immunoglobulin G,
pubmed-meshheading:2785585-Immunotoxins,
pubmed-meshheading:2785585-Indium Radioisotopes,
pubmed-meshheading:2785585-Mice,
pubmed-meshheading:2785585-Mice, Nude,
pubmed-meshheading:2785585-Neoplasm Transplantation,
pubmed-meshheading:2785585-Tissue Distribution,
pubmed-meshheading:2785585-Transplantation, Heterologous,
pubmed-meshheading:2785585-Yttrium Radioisotopes
|
pubmed:year |
1989
|
pubmed:articleTitle |
Comparative biodistributions of yttrium- and indium-labeled monoclonal antibody B72.3 in athymic mice bearing human colon carcinoma xenografts.
|
pubmed:affiliation |
Laboratory of Tumor Immunology and Biology, National Cancer Institute, Bethesda, Maryland 20892.
|
pubmed:publicationType |
Journal Article,
Comparative Study
|