Heterogeneity in cell-associated transformation-sensitive proteins antigenically related to fibronectin.
Cancer Res
; 39(5): 1803-6, 1979 May.
Article
em En
| MEDLINE
| ID: mdl-85490
ABSTRACT
Antiserum to purified fibronectin has been used to investigate transformation-associated heterogeneity in surface components antigenically related to fibronectin. Examination of extracts from surface-labeled rat cells by gradient gel electrophoresis revealed in "normal" cells the presence of two species with approximate molecular weights of 250,000 and 230,000, which were decreased in wild-type transformed cells. Reaction with antifibronectin serum revealed the selective precipitation of the two transformation-sensitive surface components. A similar experiment with ts-NT3-KR that expresses a normal phenotype at 37 degrees and a transformed morphology at 33 degrees did not reveal a markedly altered surface labeling pattern at both temperatures. However, reaction with antifibronectin serum did show a weak but detectable recognition of a 230,000-dalton doublet in the cells grown at 37 degrees, and immune precipitation of components in the 100,000- and 60,000-dalton region in cells grown at 33 degrees. Experiments with normal mouse cells revealed a different ratio of two fibronectin-related external proteins with similar molecular weights to those seen in normal rat cells.
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Base de dados:
MEDLINE
Assunto principal:
Glicoproteínas
/
Transformação Celular Neoplásica
/
Fibroblastos
/
Antígenos de Superfície
Tipo de estudo:
Diagnostic_studies
/
Risk_factors_studies
Limite:
Animals
Idioma:
En
Ano de publicação:
1979
Tipo de documento:
Article