Expression of MCAM/MUC18 by human melanoma cells leads to increased tumor growth and metastasis

Shanhai Xie, Mario Luca, Suyun Huang, Mordechai Gutman, Reuven Reich, Judith P. Johnson, Menashe Bar Eli

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199 Scopus citations

Abstract

The cell surface adhesion molecule MCAM (MUC18) is strongly expressed by advanced primary and metastatic melanomas but is weaker and less frequent in nevus cells. Previous studies have shown that MCAM expression correlates with tumor thickness and metastatic potential of human melanoma cells in nude mice. To provide direct evidence that MCAM plays a role in tumor growth and metastasis of human melanoma, the nonmetastatic MCAM-negative primary cutaneous melanoma SB-2 cells were transfected with MCAM cDNA and analyzed subsequently for changes in their tumorigenic and metastatic potential. Enforced expression of MCAM in SB-2 cells rendered them highly tumorigenic and increased their metastatic potential in nude mice as compared with parental and control transfected cells. The transfected cells displayed increased homotypic adhesion, increased attachment to human endothelial cells, decreased ability to adhere to laminin, and increased invasiveness through Matrigel-coated filters. Anti-MCAM monoclonal antibody reversed these functions in the transfected cells but not in control cells. The above changes in function attributed to the expression of MCAM may underlie the contribution of MCAM/MUC18 to the malignant phenotype.

Original languageEnglish (US)
Pages (from-to)2295-2303
Number of pages9
JournalCancer research
Volume57
Issue number11
StatePublished - Jun 1 1997

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ASJC Scopus subject areas

  • Oncology
  • Cancer Research

Cite this

Xie, S., Luca, M., Huang, S., Gutman, M., Reich, R., Johnson, J. P., & Bar Eli, M. (1997). Expression of MCAM/MUC18 by human melanoma cells leads to increased tumor growth and metastasis. Cancer research, 57(11), 2295-2303.