TY - JOUR
T1 - The Sprouty-related protein, Spred, inhibits cell motility, metastasis, and Rho-mediated actin reorganization
AU - Miyoshi, Kanta
AU - Wakioka, Toru
AU - Nishinakamura, Hitomi
AU - Kamio, Masaki
AU - Yang, Lu
AU - Inoue, Makoto
AU - Hasegawa, Mamoru
AU - Yonemitsu, Yoshikazu
AU - Komiya, Setsuro
AU - Yoshimura, Akihiko
N1 - Funding Information:
We thank Ms Kawabata-Honda and S Sata for excellent technical assistance, Dr Kaibuchi (Nagoya University) for Rho, Rac, and cdc42 plasmids, Dr Narumiya (Kyoto University) for GST-RBD and Rock plasmid s, Ms Arifuku and Ms Yamaura for manuscript preparation. This work was supported by Special Grants-in-Aid from the Ministry of Education, Science, Technology, Sports, and Culture of Japan, the Japan Health Science Foundation, the Human Frontier Science Program, the Japan Research Foundation for Clinical Pharmacology, and the Uehara Memorial Found ation.
PY - 2004/7/22
Y1 - 2004/7/22
N2 - Sprouty and the Sprouty-related protein, Spred (Sprouty-related Ena/vasodilator-stimulated phospho-protein homology-1 (EVH1) domain-containing protein), inhibit Ras-dependent extracellular signal-regulated kinase (ERK) signaling induced by a variety of growth factors. Since Sprouty proteins have been shown to inhibit not only ERK activation but also cell migration, we postulated that Spreds also inhibit cellular migration. Using stably highly metastatic LM8 cells infected with the Spred1-Sendai virus vector, we demonstrated that Spred1 inhibits the metastasis of LM8 cells in nude mice. Spred1 overexpression also inhibited migration of cells in vitro in response to chemokines, CCL19 and CCL21. We also found that Spred1 overexpression dissolved actin-stress fibers. Both EVH1 domain and C-terminal Sprouty-related domain were required for actin reassembly. Spred1 and Spred2 suppressed constitutively activated RhoA (V14RhoA)-induced stress fiber formation and serum response factor activation. Spred1 bound to activated RhoA, but not cdc42 and Rac. Spred1 also inhibited chemokine-induced RhoA activation and active RhoA-induced Rho-kinase activation. These data suggest that Spreds are key regulators of RhoA-mediated cell motility and signal transduction. Furthermore, our study suggests that the induction of Spreds could be a novel strategy for preventing cancer cell metastasis.
AB - Sprouty and the Sprouty-related protein, Spred (Sprouty-related Ena/vasodilator-stimulated phospho-protein homology-1 (EVH1) domain-containing protein), inhibit Ras-dependent extracellular signal-regulated kinase (ERK) signaling induced by a variety of growth factors. Since Sprouty proteins have been shown to inhibit not only ERK activation but also cell migration, we postulated that Spreds also inhibit cellular migration. Using stably highly metastatic LM8 cells infected with the Spred1-Sendai virus vector, we demonstrated that Spred1 inhibits the metastasis of LM8 cells in nude mice. Spred1 overexpression also inhibited migration of cells in vitro in response to chemokines, CCL19 and CCL21. We also found that Spred1 overexpression dissolved actin-stress fibers. Both EVH1 domain and C-terminal Sprouty-related domain were required for actin reassembly. Spred1 and Spred2 suppressed constitutively activated RhoA (V14RhoA)-induced stress fiber formation and serum response factor activation. Spred1 bound to activated RhoA, but not cdc42 and Rac. Spred1 also inhibited chemokine-induced RhoA activation and active RhoA-induced Rho-kinase activation. These data suggest that Spreds are key regulators of RhoA-mediated cell motility and signal transduction. Furthermore, our study suggests that the induction of Spreds could be a novel strategy for preventing cancer cell metastasis.
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U2 - 10.1038/sj.onc.1207759
DO - 10.1038/sj.onc.1207759
M3 - Article
C2 - 15184877
AN - SCOPUS:3342886447
VL - 23
SP - 5567
EP - 5576
JO - Oncogene
JF - Oncogene
SN - 0950-9232
IS - 33
ER -