ANTIIDIOTYPIC MONOCLONAL-ANTIBODY AB3, REACTING WITH the PRIMARY ANTIGEN (CEA), CAN LOCALIZE in HUMAN COLON-CARCINOMA XENOGRAFTS AS EFFICIENTLY AS AB1

ANTIIDIOTYPIC MONOCLONAL-ANTIBODY AB3, REACTING WITH the PRIMARY ANTIGEN (CEA), CAN LOCALIZE in HUMAN COLON-CARCINOMA XENOGRAFTS AS EFFICIENTLY AS AB1

Autor Demoraes, J. Z. Google Scholar
Gesztesi, J. L. Google Scholar
Westermann, P. Google Scholar
Ledoussal, J. M. Google Scholar
Lopes, J. D. Google Scholar
Mach, J. P. Google Scholar
Instituição Universidade Federal de São Paulo (UNIFESP)
Resumo BALB/c mice were immunized with anti-idiotypic monoclonal (MAb) antibody (anti-Id or Ab2) directed against an AB1 MAb anti-carcinoembryonic (CEA) in order to obtain AB3 MAbs (anti-anti-Id). AB3 MAbs were shown to recognise the primary antigen (CEA) and one of them was tested extensively in vitro and in vivo. This AB3 MAb was shown to bind specifically to CEA on frozen sections of a human colon carcinoma by immuoperoxidase. Scatchard plot analyses showed that the affinity of this AB3 was of the same order of magnitude as the AB1. in vivo experiments, in nude mice bearing CEA-producing human colon-carcinoma xenografts showed that up to 30% of the intravenously injected dose of I-125-labelled AB3 were localized per gram of tumour tissue. Furthermore, calculation of the ratios of AB3 concentration in the tumour over those in normal organs such as lung, liver, kidney, spleen and bone gave relatively high values similar to results obtained with AB1. All together our results show that AB3 can localize as efficiently and specifically in the tumour as AB1, despite the fact that the mice from which it was derived were immunized with a mouse MAb (AB2) and had never been exposed to CEA. (C) 1994 Wiley-Liss, Inc.
Idioma Inglês
Data de publicação 1994-05-15
Publicado em International Journal of Cancer. New York: Wiley-liss, v. 57, n. 4, p. 586-591, 1994.
ISSN 0020-7136 (Sherpa/Romeo, fator de impacto)
Publicador Wiley-Blackwell
Extensão 586-591
Fonte http://dx.doi.org/10.1002/ijc.2910570424
Direito de acesso Acesso restrito
Tipo Artigo
Web of Science WOS:A1994NL69800023
Endereço permanente http://repositorio.unifesp.br/handle/11600/25409

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