Linked Life Data

2297752

Source:http://linkedlifedata.com/resource/pubmed/id/2297752

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3 Suppl
pubmed:dateCreated
1990-3-13
pubmed:abstractText
Monoclonal antibody ZCE025 recognizes an epitope of the carcinoembryonic molecule (CEA). We have shown that when linked to 90Y, its localization in the tumor was sufficient to result in a significant tumoricidal effect in human colon carcinomatosis grown in the peritoneum of athymic mice. Intraperitoneal tumors were present 7 days after inoculation of the CEA-producing human colon carcinoma cell line LS174T, when the mice received i.p. injections with 40 to 160 microCi of 90Y-labeled ZCE025 or 96.5c (nonspecific monoclonal antibody). The animals that were autopsied 12 days after treatment displayed a significant (P less than 0.001) inhibition of tumor growth when compared to the control animals that received no treatment or similar doses of nonspecific monoclonal antibody. Microscopically, the treated tumors showed extensive radiation effect and they became progressively necrotic until only a rim of viable tissue remained in the periphery of the nodules. CEA expression was practically absent on the newly grown nodules that began to appear 3 weeks after therapy, and remained so 6 weeks thereafter. In contrast, over 80% of the tumor cells from the untreated animals expressed CEA. There was no mortality due to treatment; however, the hematopoietic organs were markedly depleted at the higher doses. The marrow and the spleen recovery began 2 weeks after treatment, and it was completed by the 4th week. No evidence of toxicity was present in any of the other organs examined. These studies suggest that 90Y-ZCE025 therapy results in clonal selection of cells lacking or minimally expressing CEA. The inherent implications of these findings are discussed.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0008-5472
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
50
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
989s-992s
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Radioimmunotherapy of human colon carcinomatosis xenograft with 90Y-ZCE025 monoclonal antibody: toxicity and tumor phenotype studies.
pubmed:affiliation
Division of Pathology, City of Hope National Medical Center, Duarte, California 91010.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't