par Ouali, Mustapha 
;Ruysschaert, Jean Marie ;Lonez, Caroline ;Vandenbranden, Michel
Référence Molecular membrane biology, 24, 3, page (225-232)
Publication Publié, 2007
;Ruysschaert, Jean Marie ;Lonez, Caroline ;Vandenbranden, Michel Référence Molecular membrane biology, 24, 3, page (225-232)
Publication Publié, 2007
Article révisé par les pairs
| Résumé : | Cationic lipids are efficient tools to introduce nucleic acids and proteins into cells. Elucidation of the mechanism and cellular pathways associated with such transport has been relatively tedious, even though significant progress has been made in the characterization of the intracellular trafficking of lipid/DNA complexes. Surprisingly little is known about the effects of these delivery vectors on cell functioning. In this report, we show that both cationic lipids and cationic lipid/DNA complexes mobilize the intracellular calcium. Removal of extracellular calcium did not significantly abolish this effect and preincubating cells with thapsigargin led to a decrease in [Ca2+]i, indicating that calcium was released mainly from internal calcium stores sensitive to thapsigargin. Pretreatment of the cells with the phospholipase C inhibitor U73122, blocked the [Ca2+]i rise, suggesting an inositol dependent mechanism. |
