Mechanism of cell growth regulation by small G proteins

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We found that phospholipase C・, an effector of the ras oncogene product (Ras), plays a crucial and universal role in tumor promotion through triggering inflammatory reactions, and analyzed the underlying action mechanisms. Furthermore, we elucidated the molecular mechanism for the conformational dynamics of the GTP-bound Ras. By using a new strategy based on this mechanism, we developed small molecule Ras inhibitors, which exhibit equivalent or even higher anti-tumor activities in animal models compared to the existing anti-cancer drugs, through an in silico approach.