RhoD regulates endosome dynamics through Diaphanous-related Formin and Src 
tyrosine kinase

Gasman, S.; Kalaidzidis, Y.; Zerial, M.

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RhoD regulates endosome dynamics through Diaphanous-related Formin and Src tyrosine kinase

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Zerial, M.
Max Planck Institute of Molecular Cell Biology and Genetics, Max Planck Society;

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Citation

Gasman, S., Kalaidzidis, Y., & Zerial, M. (2003). RhoD regulates endosome dynamics through Diaphanous-related Formin and Src tyrosine kinase. Nature Cell Biology, 5(3), 195-U3.

Cite as: https://hdl.handle.net/21.11116/0000-0001-128E-B

Abstract

Early endosomes move bidirectionally between the cell periphery and the interior through a mechanism regulated by the low molecular weight GTPase RhoD. Here, we identify a novel splice variant of human Diaphanous, hDia2C, which specifically binds to RhoD and is recruited onto early endosomes. Expression of RhoD and hDia2C induces a striking alignment of early endosomes along actin filaments and reduces their motility. This activity depends on the membrane recruitment and activation of c-Src kinase, thus uncovering a new role in endosome function. Our results define a novel signal transduction pathway, in which hDia2C and c-Src are sequentially activated by RhoD to regulate the motility of early endosomes through interactions with the actin cytoskeleton.