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- _6 value "TLR4 and Syk were required for mmLDL activation of guanine nucleotide exchanging factor Vav1, small GTPase Ras, kinases Raf, MEK1 and ERK1/2; in turn, ERK1/2 phosphorylated paxillin at Ser126 and activated small GTPases Cdc42, Rac and Rho (Figure 3 and Online Figure III). These signaling events lead to actin polymerization, a necessary step in membrane ruffling. Our results agree with the reports of Syk-dependent ERK1/2 activation in phagocytosis45, ERK1/2 activation in TLR4-dependent antigen uptake by dendritic cells46, and the role of paxillin and small GTPases in actin reorganization and pinocytic vesicle formation9,26,27,47. " provenance.
- _6 wasQuotedFrom 19461045 provenance.