Functional differences between two morphologically distinct cell subpopulations within a human colorectal carcinoma cell line

Functional differences between two morphologically distinct cell subpopulations within a human colorectal carcinoma cell line

Autor Solimene, A.c.c. Autor UNIFESP Google Scholar
Carneiro, Celia Regina Whitaker Autor UNIFESP Google Scholar
Melati, I. Autor UNIFESP Google Scholar
Lopes, Jose Daniel Autor UNIFESP Google Scholar
Instituição Fundação Antônio Prudente
Universidade Federal de São Paulo (UNIFESP)
Resumo The LISP-I human colorectal adenocarcinoma cell line was isolated from a hepatic metastasis at the Ludwig Institute, São Paulo, SP, Brazil. The objective of the present study was to isolate morphologically different subpopulations within the LISP-I cell line, and characterize some of their behavioral aspects such as adhesion to and migration towards extracellular matrix components, expression of intercellular adhesion molecules and tumorigenicity in vitro. Once isolated, the subpopulations were submitted to adhesion and migration assays on laminin and fibronectin (crucial proteins to invasion and metastasis), as well as to anchorage-independent growth. Two morphologically different subpopulations were isolated: LISP-A10 and LISP-E11. LISP-A10 presents a differentiated epithelial pattern, and LISP-E11 is fibroblastoid, suggesting a poorly differentiated pattern. LISP-A10 expressed the two intercellular adhesion molecules tested, carcinoembryonic antigen (CEA) and desmoglein, while LISP-E11 expressed only low amounts of CEA. On the other hand, adhesion to laminin and fibronectin as well as migration towards these extracellular matrix proteins were higher in LISP-E11, as expected from its poorly differentiated phenotype. Both subpopulations showed anchorage-independent growth on a semi-solid substrate. These results raise the possibility that the heterogeneity found in the LISP-I cell line, which might have contributed to its ability to metastasize, was due to at least two different subpopulations herein identified.
Palavra-chave carcinoembryonic antigen
CEA
colorectal carcinoma cell line
laminin
fibronectin
desmoglein
metastasis
Idioma Inglês
Data de publicação 2001-05-01
Publicado em Brazilian Journal of Medical and Biological Research. Associação Brasileira de Divulgação Científica, v. 34, n. 5, p. 653-661, 2001.
ISSN 0100-879X (Sherpa/Romeo, fator de impacto)
Publicador Associação Brasileira de Divulgação Científica
Extensão 653-661
Fonte http://dx.doi.org/10.1590/S0100-879X2001000500014
Direito de acesso Acesso aberto Open Access
Tipo Artigo
Web of Science WOS:000168735900014
SciELO S0100-879X2001000500014 (estatísticas na SciELO)
Endereço permanente http://repositorio.unifesp.br/handle/11600/1160

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