To determine whether DHA-induced changes in lipid composition would lead to the alteration of caveolae/lipid raft signaling components, we first characterized Src family kinase localization in hRVE cells. The dual-acylated Src family kinases Fyn and c-Yes were exclusively localized in caveolae/lipid rafts, whereas only myristoylated c-Src was excluded (Fig. 7). To examine whether the inhibition of SFKs localized in caveolae/lipid rafts would lead to a decrease of cytokine-induced inflammatory response, PP2, a specific inhibitor of SFKs (c-Src, Fyn, c-Yes) was used (Fig. 8). PP2 diminished TNF-–induced VCAM-1 expression in hRVE cells (Fig. 8), suggesting that SFKs localized in caveolae/lipid rafts could be important players in the cytokine-induced inflammatory response.