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Article (Scientific journals)
Cell surface immunophenotype and gelatinase activity of the human breast carcinoma cell line (MCF-7/6) with functionally defective E-cadherin.
Hlavcak, P.; Sedlakova, O.; Sedlak, J. et al.
1999In Neoplasma, 46 (1), p. 12-6
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Keywords :
Antigens, CD15/metabolism; Antigens, CD44/metabolism; Antigens, Surface/genetics; Breast Neoplasms/enzymology/genetics/immunology; Cadherins/metabolism; Female; Flow Cytometry; Gelatinases/metabolism; Gene Expression Regulation, Neoplastic; Humans; Immunophenotyping; Tumor Cells, Cultured; Up-Regulation
Abstract :
[en] Expression of differentiation and adhesion cell surface antigens (LewisX - CD15, CD44, syndecan 1 - CD138 and basigin/EMMPRIN - CD147) were determined on the cell surface of human breast carcinoma MCF7 cells in vitro with the aid of flow cytometry and compared with that of MCF-7/6 cells, with functionally defective E-cadherin system and increased biological aggressiveness. The major cell surface alterations in MCF-7/6 cells compared with the parental MCF-7 cell line were a markedly increased CD15 (LewisX) and CD44 antigen cell surface expression on MCF-7/6 cells. There were no major differences between parental MCF-7 and MCF-7/6 cells in cell surface syndecan 1, basigin/EMMPRIN, E-cadherin and high affinity non-integrin laminin receptor expression. The constitutive cell surface gelatinase A and B activities were absent on MCF-7 and faint in MCF-7/6 cells. Both phorbol ester TPA and tumor necrosis factor TNF-alpha induced a marked up-regulation of gelatinase B only in MCF-7/6 cells. No marked differences in penetration of MCF-7 vs. MCF-7/6 cells into collagen/fibroblast matrix in vitro were observed. The increased expression of CD15 (LewisX), CD44 antigen and TNF-alpha-inducible gelatinase B on MCF-7/6 cells may represent auxiliary factors contributing to the increased biological aggressiveness of MCF-7/6 cells.
Disciplines :
Oncology
Biochemistry, biophysics & molecular biology
Author, co-author :
Hlavcak, P.
Sedlakova, O.
Sedlak, J.
Hunakova, L.
Duraj, J.
Sulikova, M.
Bizik, J.
Castronovo, Vincenzo ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biologie générale et cellulaire - GIGA-R : Labo de recherche sur les métastases
Chorvath, B.
Language :
English
Title :
Cell surface immunophenotype and gelatinase activity of the human breast carcinoma cell line (MCF-7/6) with functionally defective E-cadherin.
Publication date :
1999
Journal title :
Neoplasma
ISSN :
0028-2685
Publisher :
Slovak Academic Press Ltd., Bratislava, Slovakia
Volume :
46
Issue :
1
Pages :
12-6
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 28 September 2009

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