Inhibition of phospholipid reacylation in oxidative damage of tumor cells

Kondakova, I.V.; Borunov, E.V.; Bondarenko, E.I.

Biulleten' Eksperimental'noi Biologii i Meditsiny 113(5): 522-524

1992


ISSN/ISBN: 0365-9615
PMID: 1421279
Document Number: 395110
In this study we examined the effect of oxidative stress on phospholipid reacylation and (1-14C)arachidonic acid uptake by murine mastocytoma P815 cells. Tert-butyl hydroperoxide inhibited arachidonic acid uptake by P815 cells and incorporation of fatty acid into main cellular phospholipids. Specific activity of control phosphatidylcholine was about 15-fold higher than that of phosphatidylcholine from tert-butyl hydroperoxide-treated cells. For phosphatidylethanolamine and phosphatidylinositol this inhibition was about 7-fold and 12-fold, respectively. Thus, oxidative stress causes the drastic changes in the process of phospholipid repair, which may significantly disorder membrane stability.

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