Expression of tumor antigen correlated with metastatic potential of lewis lung carcinoma and b16 melanoma clones in mice1

R. Falcioni, A. Sacchi, P. Giacomini, G. Zupi, Stephen Kennel

Research output: Contribution to journalArticle

75 Citations (Scopus)

Abstract

Expression of a tumor-associated antigen, recognized by a monoclonal antibody (MoAb 135-13C) to lung carcinoma cells, has been studied in cloned Lewis lung carcinoma (3LL) and in B16 melanoma (F1 and F10) tumor lines endowed with different metastatic potentials. MoAb 135-13C recognizes a protein complex (tumor-specific Mx 180,000 protein) that appears on the cell surface of several murine lung carcinomas but is not detected on normal cells in culture. Standard metastatic variants of B16 melanoma (F1 and F10) and two variant sublines of 3LL (M1087 and BM21548) together with the parental line of 3LL have been used for these experiments. The two cloned variant lines derived from 3LL have been shown to retain high (M1087) and low (BM21548) metastatic phenotypes during in vivo passaging. We found that all three cell lines of 3LL bind monoclonal antibody specifically, but one cell variant with higher metastatic potential shows a higher capacity to bind MoAb 135-13C than did the other variant. Similarly we found that B16 F10 cells bind higher amounts of MoAb 135-13C than did B16 F1 cells. In addition the analysis of the amounts of MoAb 135-13C bound to the cell surface of several other in vitro and in vivo tumor lines with different metastatic capacity demonstrates that all tumor lines which express high ability to colonize to the lung also express, on the cell surface, higher amounts of tumor-specific Mr 180,000 protein. The sodium dodecyl sulfate-polyacrylamide gel electrophoresis autora-diograms of immunoprecipitates from cell lysates of 3LL and B16 tumor lines demonstrate that MoAb 135-13C specifically precipitated three proteins banding at molecular weights of 204,000,134,000, and 116,000. We conclude that MoAb 135-13C recognizes a surface protein complex which is present in higher amounts in 3LL and B16 cells which possess higher capacity to metastasize to the lung.

Original languageEnglish (US)
Pages (from-to)5772-5778
Number of pages7
JournalCancer Research
Volume46
Issue number11
StatePublished - Jan 1 1986
Externally publishedYes

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Lewis Lung Carcinoma
Experimental Melanomas
Neoplasm Antigens
Clone Cells
Lung
Neoplasms
Integrin alpha6beta4
Monoclonal Antibodies
Carcinoma
Proteins
Sodium Dodecyl Sulfate
Polyacrylamide Gel Electrophoresis
Membrane Proteins
Cell Culture Techniques
Molecular Weight
Phenotype
Cell Line

All Science Journal Classification (ASJC) codes

  • Oncology
  • Cancer Research

Cite this

Expression of tumor antigen correlated with metastatic potential of lewis lung carcinoma and b16 melanoma clones in mice1. / Falcioni, R.; Sacchi, A.; Giacomini, P.; Zupi, G.; Kennel, Stephen.

In: Cancer Research, Vol. 46, No. 11, 01.01.1986, p. 5772-5778.

Research output: Contribution to journalArticle

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abstract = "Expression of a tumor-associated antigen, recognized by a monoclonal antibody (MoAb 135-13C) to lung carcinoma cells, has been studied in cloned Lewis lung carcinoma (3LL) and in B16 melanoma (F1 and F10) tumor lines endowed with different metastatic potentials. MoAb 135-13C recognizes a protein complex (tumor-specific Mx 180,000 protein) that appears on the cell surface of several murine lung carcinomas but is not detected on normal cells in culture. Standard metastatic variants of B16 melanoma (F1 and F10) and two variant sublines of 3LL (M1087 and BM21548) together with the parental line of 3LL have been used for these experiments. The two cloned variant lines derived from 3LL have been shown to retain high (M1087) and low (BM21548) metastatic phenotypes during in vivo passaging. We found that all three cell lines of 3LL bind monoclonal antibody specifically, but one cell variant with higher metastatic potential shows a higher capacity to bind MoAb 135-13C than did the other variant. Similarly we found that B16 F10 cells bind higher amounts of MoAb 135-13C than did B16 F1 cells. In addition the analysis of the amounts of MoAb 135-13C bound to the cell surface of several other in vitro and in vivo tumor lines with different metastatic capacity demonstrates that all tumor lines which express high ability to colonize to the lung also express, on the cell surface, higher amounts of tumor-specific Mr 180,000 protein. The sodium dodecyl sulfate-polyacrylamide gel electrophoresis autora-diograms of immunoprecipitates from cell lysates of 3LL and B16 tumor lines demonstrate that MoAb 135-13C specifically precipitated three proteins banding at molecular weights of 204,000,134,000, and 116,000. We conclude that MoAb 135-13C recognizes a surface protein complex which is present in higher amounts in 3LL and B16 cells which possess higher capacity to metastasize to the lung.",
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