Abstract:
:We have previously shown that C-CAM1 cell adhesion molecule can suppress the growth of prostate cancer cells in vivo. In this study, we determined the minimal domain of C-CAM1 that is required for its tumor-suppressive activity. DU145 prostate cancer cells were infected with recombinant adenoviruses containing various C-CAM1 mutant genes, and the effects of the mutant C-CAM1 proteins on the growth of DU145 cells were assessed in a nude-mice xenograft model. Deletion of C-CAM1's cytoplasmic domain, which is not required for its adhesion activity, abolished the growth-suppressive activity, whereas deletion of the adhesion domain did not. This observation suggests that C-CAM1's extracellular domain may be not essential for its tumor suppressive activity. Indeed, we found that expression of the C-CAM1 cytoplasmic domain alone led to growth suppression of DU145 cells. These results suggest that the cytoplasmic domain of C-CAM1 is necessary and sufficient for its growth-suppressive function.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Estrera VT,Luo W,Phan D,Earley K,Hixson DC,Lin SHdoi
10.1006/bbrc.1999.1443subject
Has Abstractpub_date
1999-10-05 00:00:00pages
797-803issue
3eissn
0006-291Xissn
1090-2104pii
S0006-291X(99)91443-2journal_volume
263pub_type
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journal_title:Biochemical and biophysical research communications
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