|
|
||||||||
1 Department of Molecular and Medical Pharmacology, UCLA School of Medicine, Los Angeles, California 90095; and 2 Department of Biochemistry and Molecular Genetics, University of Pittsburgh, Pittsburgh, Pennsylvania 15261
The objectives of
this study were to determine whether rat aortic smooth muscle cells
(RASMC) express arginase and to elucidate the possible mechanisms
involved in the regulation of arginase expression. The results show
that RASMC contain basal arginase I (AI) activity, which is
significantly enhanced by stimulating the cells with either interleukin
(IL)-4 or IL-13, but arginase II (AII) expression was not detected
under any condition studied here. We further investigated the signal
transduction pathways responsible for AI induction. AI mRNA and protein
levels were enhanced by addition of forskolin (1 µM) and inhibited by
H-89 (30 µM), suggesting positive regulation of AI by a
protein kinase A pathway. Genistein (10 µg/ml) and sodium
orthovanadate (Na3VO4; 10 µM) were used to
investigate the role of tyrosine phosphorylation in the control of AI
expression. Genistein inhibited, whereas Na3VO4
enhanced the induction of AI by IL-4 or IL-13. Along with immunoprecipitation and immunoblot analyses, these data implicate the
JAK/STAT6 pathway in AI regulation. Dexamethasone (Dex) and interferon
(IFN)-
were investigated for their effects on AI induction. Dex (1 µM) and IFN-
(100 U/ml) alone had no effect on basal AI expression
in RASMC, but both reduced AI induction by IL-4 and IL-13. In
combination, Dex and IFN-
abolished AI induction by IL-4 and IL-13.
Finally, both IL-4 and IL-13 significantly increased RASMC DNA
synthesis as monitored by [3H]thymidine incorporation,
demonstrating that upregulation of AI is correlated with an increase in
cell proliferation. Blockade of AI induction by IFN-
, H-89, or
genistein also blocked the increase in cell proliferation. These
observations are consistent with the possibility that upregulation of
AI might play an important role in the pathophysiology of vascular
disorders characterized by excessive smooth muscle growth.
interleukin; rat aortic smooth muscle cells; cell proliferation; cytokines
This article has been cited by other articles:
![]() |
L. Santhanam, D. W. Christianson, D. Nyhan, and D. E. Berkowitz Arginase and vascular aging J Appl Physiol, November 1, 2008; 105(5): 1632 - 1642. [Abstract] [Full Text] [PDF] |
||||
![]() |
L. H. Wei, Y. Yang, G. Wu, and L. J. Ignarro IL-4 and IL-13 upregulate ornithine decarboxylase expression by PI3K and MAP kinase pathways in vascular smooth muscle cells Am J Physiol Cell Physiol, May 1, 2008; 294(5): C1198 - C1205. [Abstract] [Full Text] [PDF] |
||||
![]() |
J. Dumont, M. Zureik, D. Cottel, M. Montaye, P. Ducimetiere, P. Amouyel, and T. Brousseau Association of arginase 1 gene polymorphisms with the risk of myocardial infarction and common carotid intima media thickness J. Med. Genet., August 1, 2007; 44(8): 526 - 531. [Abstract] [Full Text] [PDF] |
||||
![]() |
N. Thengchaisri, T. W. Hein, W. Wang, X. Xu, Z. Li, T. W. Fossum, and L. Kuo Upregulation of Arginase by H2O2 Impairs Endothelium-Dependent Nitric Oxide-Mediated Dilation of Coronary Arterioles Arterioscler. Thromb. Vasc. Biol., September 1, 2006; 26(9): 2035 - 2042. [Abstract] [Full Text] [PDF] |
||||
![]() |
A. Erdely, D. Kepka-Lenhart, M. Clark, P. Zeidler-Erdely, M. Poljakovic, W. J. Calhoun, and S. M. Morris Jr Inhibition of phosphodiesterase 4 amplifies cytokine-dependent induction of arginase in macrophages Am J Physiol Lung Cell Mol Physiol, March 1, 2006; 290(3): L534 - L539. [Abstract] [Full Text] [PDF] |
||||
![]() |
G. S. Getz and C. A. Reardon Arginine/Arginase NO NO NO Arterioscler. Thromb. Vasc. Biol., February 1, 2006; 26(2): 237 - 239. [Full Text] [PDF] |
||||
![]() |
D. Teupser, R. Burkhardt, W. Wilfert, I. Haffner, K. Nebendahl, and J. Thiery Identification of Macrophage Arginase I as a New Candidate Gene of Atherosclerosis Resistance Arterioscler. Thromb. Vasc. Biol., February 1, 2006; 26(2): 365 - 371. [Abstract] [Full Text] [PDF] |
||||
![]() |
P. Sinha, V. K. Clements, and S. Ostrand-Rosenberg Interleukin-13-regulated M2 Macrophages in Combination with Myeloid Suppressor Cells Block Immune Surveillance against Metastasis Cancer Res., December 15, 2005; 65(24): 11743 - 11751. [Abstract] [Full Text] [PDF] |
||||
![]() |
F. K. Johnson, R. A. Johnson, K. J. Peyton, and W. Durante Arginase inhibition restores arteriolar endothelial function in Dahl rats with salt-induced hypertension Am J Physiol Regulatory Integrative Comp Physiol, April 1, 2005; 288(4): R1057 - R1062. [Abstract] [Full Text] [PDF] |
||||
![]() |
P. Sinha, V. K. Clements, and S. Ostrand-Rosenberg Reduction of Myeloid-Derived Suppressor Cells and Induction of M1 Macrophages Facilitate the Rejection of Established Metastatic Disease J. Immunol., January 15, 2005; 174(2): 636 - 645. [Abstract] [Full Text] [PDF] |
||||
![]() |
C. Zhang, T. W. Hein, W. Wang, M. W. Miller, T. W. Fossum, M. M. McDonald, J. D. Humphrey, and L. Kuo Upregulation of Vascular Arginase in Hypertension Decreases Nitric Oxide-Mediated Dilation of Coronary Arterioles Hypertension, December 1, 2004; 44(6): 935 - 943. [Abstract] [Full Text] [PDF] |
||||
![]() |
N. E. King, M. E. Rothenberg, and N. Zimmermann Arginine in Asthma and Lung Inflammation J. Nutr., October 1, 2004; 134(10): 2830S - 2836S. [Abstract] [Full Text] [PDF] |
||||
![]() |
M. P. Aoki, N. L. Guinazu, A. V. Pellegrini, T. Gotoh, D. T. Masih, and S. Gea Cruzipain, a major Trypanosoma cruzi antigen, promotes arginase-2 expression and survival of neonatal mouse cardiomyocytes Am J Physiol Cell Physiol, February 1, 2004; 286(2): C206 - C212. [Abstract] [Full Text] |
||||
![]() |
G. E. Mann, D. L. Yudilevich, and L. Sobrevia Regulation of Amino Acid and Glucose Transporters in Endothelial and Smooth Muscle Cells Physiol Rev, January 1, 2003; 83(1): 183 - 252. [Abstract] [Full Text] [PDF] |
||||
![]() |
D. M. Walter, J. J. McIntire, G. Berry, A. N. J. McKenzie, D. D. Donaldson, R. H. DeKruyff, and D. T. Umetsu Critical Role for IL-13 in the Development of Allergen-Induced Airway Hyperreactivity J. Immunol., October 15, 2001; 167(8): 4668 - 4675. [Abstract] [Full Text] [PDF] |
||||
![]() |
M. Yang, S. P. Hogan, P. J. Henry, K. I. Matthaei, A. N. J. McKenzie, I. G. Young, M. E. Rothenberg, and P. S. Foster Interleukin-13 Mediates Airways Hyperreactivity through the IL-4 Receptor-Alpha Chain and STAT-6 Independently of IL-5 and Eotaxin Am. J. Respir. Cell Mol. Biol., October 1, 2001; 25(4): 522 - 530. [Abstract] [Full Text] [PDF] |
||||
![]() |
D. Kepka-Lenhart, S. K. Mistry, G. Wu, and S. M. Morris Jr. Arginase I: a limiting factor for nitric oxide and polyamine synthesis by activated macrophages? Am J Physiol Regulatory Integrative Comp Physiol, December 1, 2000; 279(6): R2237 - R2242. [Abstract] [Full Text] [PDF] |
||||
![]() |
L. J. Ignarro, G. M. Buga, L. H. Wei, P. M. Bauer, G. Wu, and P. del Soldato Inaugural Article: Role of the arginine-nitric oxide pathway in the regulation of vascular smooth muscle cell proliferation PNAS, March 27, 2001; 98(7): 4202 - 4208. [Abstract] [Full Text] [PDF] |
||||
![]() |
L. H. Wei, G. Wu, S. M. Morris Jr., and L. J. Ignarro Elevated arginase I expression in rat aortic smooth muscle cells increases cell proliferation PNAS, July 31, 2001; 98(16): 9260 - 9264. [Abstract] [Full Text] [PDF] |
||||
![]() |
P. M. Bauer, G. M. Buga, and L. J. Ignarro Role of p42/p44 mitogen-activated-protein kinase and p21waf1/cip1 in the regulation of vascular smooth muscle cell proliferation by nitric oxide PNAS, October 23, 2001; 98(22): 12802 - 12807. [Abstract] [Full Text] [PDF] |
||||
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| Visit Other APS Journals Online |