Down-regulation of the desmosomal cadherin desmocollin 3 in human breast cancer.

G. T. Klus, N. Rokaeus, M. L. Bittner, Y. Chen, D. M. Korz, S. Sukumar, A. Schick, Z. Szallasi

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


In previous studies using cDNA microarray analysis, we have identified an expressed sequence tag which is consistently down-regulated in six human breast tumor cell lines. In the current study, we have determined this tag to be part of the mRNA sequence of human desmocollin 3, a member of the cadherin superfamily of proteins and an integral component of desmosomes. Desmosomes are sites of adhesion between adjacent cells in layers of epithelia, as well as in some non-epithelial tissues, and play an important role in the maintenance of tissue structure. Northern analysis, quantitative real-time polymerase chain reaction assay and Western blot analysis showed that desmocollin 3 is present in normal and immortalized human mammary epithelial cells, but consistently exhibits a significant, and often complete, down-regulation in breast cancer cell lines and primary breast tumors, both at the mRNA and protein levels.

Original languageEnglish (US)
Pages (from-to)169-174
Number of pages6
JournalInternational journal of oncology
Issue number1
StatePublished - Jul 2001
Externally publishedYes

ASJC Scopus subject areas

  • Oncology
  • Cancer Research


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