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Endocytic Trafficking of Cholera Toxin in Balb 3T3 Cells (CROSBI ID 152384)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Blagojević, Gordana ; Mahmutefendić, Hana ; Kučić, Natalia ; Ilić Tomaš, Maja ; Lučin, Pero Endocytic Trafficking of Cholera Toxin in Balb 3T3 Cells // Croatica chemica acta, 81 (2008), 1; 191-202

Podaci o odgovornosti

Blagojević, Gordana ; Mahmutefendić, Hana ; Kučić, Natalia ; Ilić Tomaš, Maja ; Lučin, Pero

engleski

Endocytic Trafficking of Cholera Toxin in Balb 3T3 Cells

Endocytosis of the cholera toxin B subunit (CTxB) in various cell lines has shown diversity of entry paths of cell surface bound ligands. The aim of this study was to clarify internalisation mechanism and endosomal trafficking of CTxB in murine fibroblasts (Balb 3T3 cells) and human epithelial cells (HeLa). We have shown that CTxB enters Balb 3T3 cells mainly via cholesterol-dependent endocytic pathway(s), while in HeLa cells clathrin endocytosis plays a major role. Early endosomal acidic gradient is required for CTxB progression towards the Golgi in HeLa cells, whereas a majority of internalised CTxB bypasses early endosomes (EEA1+ compartments) in Balb 3T3 cells. The acidic gradient is also required for exit from the Golgi into the late endosomes and degradation of CTxB in Balb 3T3 cells. Thus, the CTxB trafficking may help in the understanding of non-clathrin endocytic mechanisms and the complexity of late endosomal compartments.

cholera toxin; fibroblasts; Balb 3T3 cells; HeLa cells; lipid raft dependent endocytosis; early endosomes; late endosomes; endosomal acidic compartments

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Podaci o izdanju

81 (1)

2008.

191-202

objavljeno

0011-1643

Povezanost rada

Temeljne medicinske znanosti

Indeksiranost