Here we report on the role of alpha-catenin in the cellular localization of activated leukocyte cell adhesion molecule, ALCAM and cadherin-mediated cell adhesion in human prostate cancer cells. Cell lines that have a functional E-cadherin-mediated cell adhesion (DU-145 and LNCaP) show ALCAM staining at cell-cell contacts. In contrast, in cell lines that lack alpha-catenin expression (ALVA-31, PC-3, and PPC-1), E-cadherin-mediated adhesion is disturbed and ALCAM staining is cytoplasmic. A role of alpha-catenin in the recruitment of E-cadherin and ALCAM to cell-cell contacts was established by transfection of an alpha-N-catenin construct into cell lines ALVA-31 and PC-3. This resulted not only in the correct assembly of E-cadherin/alpha-catenin complexes at the cell membrane but also in localization of ALCAM to cell-cell contacts, indicating that indeed alpha-catenin affects ALCAM localization. (C) 2000 Academic Press.
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Univ Napoli Federico II, Dipartimento Biol, Via Cintia 21, I-80126 Naples, ItalyUniv Napoli Federico II, Dipartimento Biol, Via Cintia 21, I-80126 Naples, Italy
Montano, Elena
Vivo, Maria
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Univ Napoli Federico II, Dipartimento Biol, Via Cintia 21, I-80126 Naples, ItalyUniv Napoli Federico II, Dipartimento Biol, Via Cintia 21, I-80126 Naples, Italy
Vivo, Maria
Guarino, Andrea Maria
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Univ Napoli Federico II, Dipartimento Biol, Via Cintia 21, I-80126 Naples, ItalyUniv Napoli Federico II, Dipartimento Biol, Via Cintia 21, I-80126 Naples, Italy
Guarino, Andrea Maria
di Martino, Orsola
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Univ Napoli Federico II, Dipartimento Biol, Via Cintia 21, I-80126 Naples, ItalyUniv Napoli Federico II, Dipartimento Biol, Via Cintia 21, I-80126 Naples, Italy
di Martino, Orsola
Di Luccia, Blanda
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Univ Napoli Federico II, Dipartimento Biol, Via Cintia 21, I-80126 Naples, ItalyUniv Napoli Federico II, Dipartimento Biol, Via Cintia 21, I-80126 Naples, Italy
Di Luccia, Blanda
Calabro, Viola
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Univ Napoli Federico II, Dipartimento Biol, Via Cintia 21, I-80126 Naples, ItalyUniv Napoli Federico II, Dipartimento Biol, Via Cintia 21, I-80126 Naples, Italy
Calabro, Viola
Caserta, Sergio
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Univ Napoli Federico II, Dipartimento Ingn Chim Mat & Prod Ind DICMAPI, Ple Tecchio 80, I-80125 Naples, ItalyUniv Napoli Federico II, Dipartimento Biol, Via Cintia 21, I-80126 Naples, Italy
Caserta, Sergio
Pollice, Alessandra
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Univ Napoli Federico II, Dipartimento Biol, Via Cintia 21, I-80126 Naples, ItalyUniv Napoli Federico II, Dipartimento Biol, Via Cintia 21, I-80126 Naples, Italy