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Vol. 57, Issue 5, 976-983, May 2000

Pharmacological Properties of Y-27632, a Specific Inhibitor of Rho-Associated Kinases

Toshimasa Ishizaki, Masayoshi Uehata, Ichiro Tamechika, Jeongsin Keel, Kimiko Nonomura, Midori Maekawa, and Shuh Narumiya

Department of Pharmacology, Kyoto University, Faculty of Medicine, Kyoto, Japan (T.I., J.K., K.N., M.M., S.N.); and Drug Discovery Laboratories (Osaka), WelFide Corporation (Yoshitomi Pharmaceutical Industries), Hirakata, Japan (M.U., I.T.)

Y-27632 [(+)-(R)-trans-4-(1-aminoethyl)-N-(4-pyridyl)cyclohexanecarboxamide dihydrochloride] is widely used as a specific inhibitor of the Rho-associated coiled-coil forming protein serine/threonine kinase (ROCK) family of protein kinases. This study examined the inhibition mechanism and profile of actions of Y-27632 and a related compound, Y-30141 [(+)-(R)-trans- 4-(1-aminoethyl)-N-(1H-pyrrolo[2,3-b]pyridin-4-yl)cyclohexan-ecarboxamide dihydrochloride]. Y-27632 and Y-30141 inhibited the kinase activity of both ROCK-I and ROCK-II in vitro, and this inhibition was reversed by ATP in a competitive manner. This suggests that these compounds inhibit the kinases by binding to the catalytic site. Their affinities for ROCK kinases as determined by Ki values were at least 20 to 30 times higher than those for two other Rho effector kinases, citron kinase and protein kinase PKN. [3H]Y-30141 was taken up by cells in a temperature- and time-dependent and saturable manner, and this uptake was competed with unlabeled Y-27632. No concentrated accumulation was found, suggesting that the uptake is a carrier-mediated facilitated diffusion. Y-27632 abolished stress fibers in Swiss 3T3 cells at 10 µM, but the G1-S phase transition of the cell cycle and cytokinesis were little affected at this concentration. Y-30141 was 10 times more potent than Y-27632 in inhibiting the kinase activity and stress fiber formation, and it caused significant delay in the G1-S transition and inhibition of cytokinesis at 10 µM.


Copyright © 2000 by The American Society for Pharmacology and Experimental Therapeutics



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A. Staruschenko, A. Nichols, J. L. Medina, P. Camacho, N. N. Zheleznova, and J. D. Stockand
Rho Small GTPases Activate the Epithelial Na+ Channel
J. Biol. Chem., November 26, 2004; 279(48): 49989 - 49994.
[Abstract] [Full Text] [PDF]


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J. Physiol.Home page
S Shabir, L Borisova, S. Wray, and T Burdyga
Rho-kinase inhibition and electromechanical coupling in rat and guinea-pig ureter smooth muscle: Ca2+-dependent and -independent mechanisms
J. Physiol., November 1, 2004; 560(3): 839 - 855.
[Abstract] [Full Text] [PDF]


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DevelopmentHome page
L. Li, E. Arman, P. Ekblom, D. Edgar, P. Murray, and P. Lonai
Distinct GATA6- and laminin-dependent mechanisms regulate endodermal and ectodermal embryonic stem cell fates
Development, November 1, 2004; 131(21): 5277 - 5286.
[Abstract] [Full Text] [PDF]


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DevelopmentHome page
T. Shandala, S. L. Gregory, H. E. Dalton, M. Smallhorn, and R. Saint
Citron Kinase is an essential effector of the Pbl-activated Rho signalling pathway in Drosophila melanogaster
Development, October 15, 2004; 131(20): 5053 - 5063.
[Abstract] [Full Text] [PDF]


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Am. J. Physiol. Lung Cell. Mol. Physiol.Home page
J. T. Sylvester
The tone of pulmonary smooth muscle: ROK and Rho music?
Am J Physiol Lung Cell Mol Physiol, October 1, 2004; 287(4): L624 - L630.
[Full Text] [PDF]


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Am. J. Physiol. Heart Circ. Physiol.Home page
L. Jin, Z. Ying, and R. C. Webb
Activation of Rho/Rho kinase signaling pathway by reactive oxygen species in rat aorta
Am J Physiol Heart Circ Physiol, October 1, 2004; 287(4): H1495 - H1500.
[Abstract] [Full Text] [PDF]


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Circ. Res.Home page
Y. Liu, Y. J. Suzuki, R. M. Day, and B. L. Fanburg
Rho Kinase-Induced Nuclear Translocation of ERK1/ERK2 in Smooth Muscle Cell Mitogenesis Caused by Serotonin
Circ. Res., September 17, 2004; 95(6): 579 - 586.
[Abstract] [Full Text] [PDF]


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J. Biol. Chem.Home page
A. M. Avalos, W. T. Arthur, P. Schneider, A. F. G. Quest, K. Burridge, and L. Leyton
Aggregation of Integrins and RhoA Activation Are Required for Thy-1-induced Morphological Changes in Astrocytes
J. Biol. Chem., September 10, 2004; 279(37): 39139 - 39145.
[Abstract] [Full Text] [PDF]


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Cardiovasc ResHome page
F. D Russell and P. Molenaar
Investigation of signaling pathways that mediate the inotropic effect of urotensin-II in human heart
Cardiovasc Res, September 1, 2004; 63(4): 673 - 681.
[Abstract] [Full Text] [PDF]


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Am. J. Physiol. Regul. Integr. Comp. Physiol.Home page
K. Budzyn, P. D. Marley, and C. G. Sobey
Chronic mevastatin modulates receptor-dependent vascular contraction in eNOS-deficient mice
Am J Physiol Regulatory Integrative Comp Physiol, August 1, 2004; 287(2): R342 - R348.
[Abstract] [Full Text] [PDF]


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Clin. Cancer Res.Home page
T. Kamai, T. Yamanishi, H. Shirataki, K. Takagi, H. Asami, Y. Ito, and K.-I. Yoshida
Overexpression of RhoA, Rac1, and Cdc42 GTPases Is Associated with Progression in Testicular Cancer
Clin. Cancer Res., July 15, 2004; 10(14): 4799 - 4805.
[Abstract] [Full Text] [PDF]


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IOVSHome page
S. A. K. Harvey, S. C. Anderson, and N. SundarRaj
Downstream Effects of ROCK Signaling in Cultured Human Corneal Stromal Cells: Microarray Analysis of Gene Expression
Invest. Ophthalmol. Vis. Sci., July 1, 2004; 45(7): 2168 - 2176.
[Abstract] [Full Text] [PDF]


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IOVSHome page
P. S. Mettu, P.-F. Deng, U. K. Misra, G. Gawdi, D. L. Epstein, and P. V. Rao
Role of Lysophospholipid Growth Factors in the Modulation of Aqueous Humor Outflow Facility
Invest. Ophthalmol. Vis. Sci., July 1, 2004; 45(7): 2263 - 2271.
[Abstract] [Full Text] [PDF]


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J. Immunol.Home page
N. Teusch, E. Lombardo, J. Eddleston, and U. G. Knaus
The Low Molecular Weight GTPase RhoA and Atypical Protein Kinase C{zeta} Are Required for TLR2-Mediated Gene Transcription
J. Immunol., July 1, 2004; 173(1): 507 - 514.
[Abstract] [Full Text] [PDF]


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DevelopmentHome page
F. Causeret, M. Hidalgo-Sanchez, P. Fort, S. Backer, M.-R. Popoff, C. Gauthier-Rouviere, and E. Bloch-Gallego
Distinct roles of Rac1/Cdc42 and Rho/Rock for axon outgrowth and nucleokinesis of precerebellar neurons toward netrin 1
Development, June 15, 2004; 131(12): 2841 - 2852.
[Abstract] [Full Text] [PDF]


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J. Leukoc. Biol.Home page
Z. A. Pfeiffer, M. Aga, U. Prabhu, J. J. Watters, D. J. Hall, and P. J. Bertics
The nucleotide receptor P2X7 mediates actin reorganization and membrane blebbing in RAW 264.7 macrophages via p38 MAP kinase and Rho
J. Leukoc. Biol., June 1, 2004; 75(6): 1173 - 1182.
[Abstract] [Full Text] [PDF]


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Circ. Res.Home page
S.R. Bailey, A.H. Eid, S. Mitra, S. Flavahan, and N.A. Flavahan
Rho Kinase Mediates Cold-Induced Constriction of Cutaneous Arteries: Role of {alpha}2C-Adrenoceptor Translocation
Circ. Res., May 28, 2004; 94(10): 1367 - 1374.
[Abstract] [Full Text] [PDF]


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J. Neurosci.Home page
C. V. Melendez-Vasquez, S. Einheber, and J. L. Salzer
Rho Kinase Regulates Schwann Cell Myelination and Formation of Associated Axonal Domains
J. Neurosci., April 21, 2004; 24(16): 3953 - 3963.
[Abstract] [Full Text] [PDF]


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J. Leukoc. Biol.Home page
H. Honing, T. K. van den Berg, S. M. A. van der Pol, C. D. Dijkstra, R. A. van der Kammen, J. G. Collard, and H. E. de Vries
RhoA activation promotes transendothelial migration of monocytes via ROCK
J. Leukoc. Biol., March 1, 2004; 75(3): 523 - 528.
[Abstract] [Full Text] [PDF]


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Am. J. Respir. Cell Mol. Bio.Home page
M. Moore, B. A. Marroquin, W. Gugliotta, R. Tse, and S. R. White
Rho Kinase Inhibition Initiates Apoptosis in Human Airway Epithelial Cells
Am. J. Respir. Cell Mol. Biol., March 1, 2004; 30(3): 379 - 387.
[Abstract] [Full Text] [PDF]


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Proc. Natl. Acad. Sci. USAHome page
M. V. Hoang, M. C. Whelan, and D. R. Senger
Rho activity critically and selectively regulates endothelial cell organization during angiogenesis
PNAS, February 17, 2004; 101(7): 1874 - 1879.
[Abstract] [Full Text] [PDF]


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Am. J. Physiol. Cell Physiol.Home page
D. A. Emmert, J. A. Fee, Z. M. Goeckeler, J. M. Grojean, T. Wakatsuki, E. L. Elson, B. P. Herring, P. J. Gallagher, and R. B. Wysolmerski
Rho-kinase-mediated Ca2+-independent contraction in rat embryo fibroblasts
Am J Physiol Cell Physiol, January 1, 2004; 286(1): C8 - C21.
[Abstract] [Full Text] [PDF]


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JCBHome page
H. Setiadi and R. P. McEver
Signal-dependent distribution of cell surface P-selectin in clathrin-coated pits affects leukocyte rolling under flow
J. Cell Biol., December 22, 2003; 163(6): 1385 - 1395.
[Abstract] [Full Text] [PDF]


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J. Biol. Chem.Home page
A.-C. Tosello-Trampont, K. Nakada-Tsukui, and K. S. Ravichandran
Engulfment of Apoptotic Cells Is Negatively Regulated by Rho-mediated Signaling
J. Biol. Chem., December 12, 2003; 278(50): 49911 - 49919.
[Abstract] [Full Text] [PDF]


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J. Appl. Physiol.Home page
F. E. Nwariaku, P. Rothenbach, Z. Liu, X. Zhu, R. H. Turnage, and L. S. Terada
Rho inhibition decreases TNF-induced endothelial MAPK activation and monolayer permeability
J Appl Physiol, November 1, 2003; 95(5): 1889 - 1895.
[Abstract] [Full Text] [PDF]


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Am. J. Physiol. Gastrointest. Liver Physiol.Home page
H. Ikeda, K. Nagashima, M. Yanase, T. Tomiya, M. Arai, Y. Inoue, K. Tejima, T. Nishikawa, M. Omata, S. Kimura, et al.
Involvement of Rho/Rho kinase pathway in regulation of apoptosis in rat hepatic stellate cells
Am J Physiol Gastrointest Liver Physiol, November 1, 2003; 285(5): G880 - G886.
[Abstract] [Full Text] [PDF]


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Am. J. Physiol. Renal Physiol.Home page
W. Bing, S. Chang, J. A. Hypolite, M. E. DiSanto, S. A. Zderic, L. Rolf, A. J. Wein, and S. Chacko
Obstruction-induced changes in urinary bladder smooth muscle contractility: a role for Rho kinase
Am J Physiol Renal Physiol, November 1, 2003; 285(5): F990 - F997.
[Abstract] [Full Text] [PDF]


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Circ. Res.Home page
Z. Mallat, A. Gojova, V. Sauzeau, V. Brun, J.-S. Silvestre, B. Esposito, R. Merval, H. Groux, G. Loirand, and A. Tedgui
Rho-Associated Protein Kinase Contributes to Early Atherosclerotic Lesion Formation in Mice
Circ. Res., October 31, 2003; 93(9): 884 - 888.
[Abstract] [Full Text] [PDF]


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Physiol. Rev.Home page
A. P. SOMLYO and A. V. SOMLYO
Ca2+ Sensitivity of Smooth Muscle and Nonmuscle Myosin II: Modulated by G Proteins, Kinases, and Myosin Phosphatase
Physiol Rev, October 1, 2003; 83(4): 1325 - 1358.
[Abstract] [Full Text] [PDF]


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JCBHome page
J. S. Da Silva, M. Medina, C. Zuliani, A. Di Nardo, W. Witke, and C. G. Dotti
RhoA/ROCK regulation of neuritogenesis via profilin IIa-mediated control of actin stability
J. Cell Biol., September 29, 2003; 162(7): 1267 - 1279.
[Abstract] [Full Text] [PDF]


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J. Biol. Chem.Home page
M. Zhang, G. M. Kalinec, R. Urrutia, D. D. Billadeau, and F. Kalinec
ROCK-dependent and ROCK-independent Control of Cochlear Outer Hair Cell Electromotility
J. Biol. Chem., September 12, 2003; 278(37): 35644 - 35650.
[Abstract] [Full Text] [PDF]


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JCBHome page
C. L. Gatto, B. J. Walker, and S. Lambert
Local ERM activation and dynamic growth cones at Schwann cell tips implicated in efficient formation of nodes of Ranvier
J. Cell Biol., August 4, 2003; 162(3): 489 - 498.
[Abstract] [Full Text] [PDF]


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J. Biol. Chem.Home page
M. A. Chellaiah, R. S. Biswas, S. R. Rittling, D. T. Denhardt, and K. A. Hruska
Rho-dependent Rho Kinase Activation Increases CD44 Surface Expression and Bone Resorption in Osteoclasts
J. Biol. Chem., August 1, 2003; 278(31): 29086 - 29097.
[Abstract] [Full Text] [PDF]


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J. Immunol.Home page
P.-L. Tharaux, R. C. Bukoski, P. N. Rocha, S. D. Crowley, P. Ruiz, C. Nataraj, D. N. Howell, K. Kaibuchi, R. F. Spurney, and T. M. Coffman
Rho Kinase Promotes Alloimmune Responses by Regulating the Proliferation and Structure of T Cells
J. Immunol., July 1, 2003; 171(1): 96 - 105.
[Abstract] [Full Text] [PDF]




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