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Sung DJ, Park S, Noh HJ, Golpasandi S, Eun SH, Lee H, Kim B, Wie J, Seo MS, Park SW, Bae YM. Receptor-specific contributions of caveolae, PKC, and Src tyrosine kinase to serotonergic and adrenergic regulation of Kv channels and vasoconstriction. Life Sci 2023; 328:121903. [PMID: 37394095 DOI: 10.1016/j.lfs.2023.121903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/28/2023] [Accepted: 06/28/2023] [Indexed: 07/04/2023]
Abstract
AIMS Caveolae are invaginated, Ω-shaped membrane structures. They are now recognized as portals for signal transduction of multiple chemical and mechanical stimuli. Notably, the contribution of caveolae has been reported to be receptor-specific. However, details of how they differentially contribute to receptor signaling remain unclear. MAIN METHODS Using isometric tension measurements, patch-clamping, and western blotting, we examined the contribution of caveolae and their related signaling pathways to serotonergic (5-HT2A receptor-mediated) and adrenergic (α1-adrenoceptor-mediated) signaling in rat mesenteric arteries. KEY FINDINGS Disruption of caveolae by methyl-β-cyclodextrin effectively blocked vasoconstriction mediated by the 5-HT2A receptor (5-HT2AR), but not by the α1-adrenoceptor. Caveolar disruption selectively impaired 5-HT2AR-mediated voltage-dependent K+ channel (Kv) inhibition, but not α1-adrenoceptor-mediated Kv inhibition. In contrast, both serotonergic and α1-adrenergic effects on vasoconstriction, as well as Kv currents, were similarly blocked by the Src tyrosine kinase inhibitor PP2. However, inhibition of protein kinase C (PKC) by either GO6976 or chelerythrine selectively attenuated the effects mediated by the α1-adrenoceptor, but not by 5-HT2AR. Disruption of caveolae decreased 5-HT2AR-mediated Src phosphorylation, but not α1-adrenoceptor-mediated Src phosphorylation. Finally, the PKC inhibitor GO6976 blocked Src phosphorylation by the α1-adrenoceptor, but not by 5-HT2AR. SIGNIFICANCE 5-HT2AR-mediated Kv inhibition and vasoconstriction are dependent on caveolar integrity and Src tyrosine kinase, but not on PKC. In contrast, α1-adrenoceptor-mediated Kv inhibition and vasoconstriction are not dependent on caveolar integrity, but rather on PKC and Src tyrosine kinase. Caveolae-independent PKC is upstream of Src activation for α1-adrenoceptor-mediated Kv inhibition and vasoconstriction.
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Affiliation(s)
- Dong Jun Sung
- Department of Sport and Health Studies, College of Biomedical and Health Science, Konkuk University, Chungju 27478, Republic of Korea; Sports Convergence Institute, Konkuk University, Chungju 27478, Republic of Korea; Center for Metabolic Diseases, Konkuk University, Chungju 27478, Republic of Korea; Research Institute for Biomedical & Health Science, Chungju 27478, Republic of Korea
| | - Solah Park
- Department of Physiology, KU Open Innovation Center, Research Institute of Medical Science, Konkuk University School of Medicine, Chungju 27478, Republic of Korea
| | - Hyun Ju Noh
- Department of Physiology, KU Open Innovation Center, Research Institute of Medical Science, Konkuk University School of Medicine, Chungju 27478, Republic of Korea
| | - Shadi Golpasandi
- Department of Physiology, KU Open Innovation Center, Research Institute of Medical Science, Konkuk University School of Medicine, Chungju 27478, Republic of Korea
| | - Seo Hyeon Eun
- Department of Physiology, KU Open Innovation Center, Research Institute of Medical Science, Konkuk University School of Medicine, Chungju 27478, Republic of Korea
| | - Hyeryeong Lee
- Department of Physiology, KU Open Innovation Center, Research Institute of Medical Science, Konkuk University School of Medicine, Chungju 27478, Republic of Korea
| | - Bokyung Kim
- Department of Physiology, KU Open Innovation Center, Research Institute of Medical Science, Konkuk University School of Medicine, Chungju 27478, Republic of Korea
| | - Jinhong Wie
- Department of Physiology, KU Open Innovation Center, Research Institute of Medical Science, Konkuk University School of Medicine, Chungju 27478, Republic of Korea
| | - Mi Seon Seo
- Department of Physiology, KU Open Innovation Center, Research Institute of Medical Science, Konkuk University School of Medicine, Chungju 27478, Republic of Korea
| | - Sang Woong Park
- Department of Emergency Medical Services, Eulji University, Seongnam 13135, Republic of Korea.
| | - Young Min Bae
- Department of Physiology, KU Open Innovation Center, Research Institute of Medical Science, Konkuk University School of Medicine, Chungju 27478, Republic of Korea.
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Moody TW, Ramos-Alvarez I, Jensen RT. Bombesin, endothelin, neurotensin and pituitary adenylate cyclase activating polypeptide cause tyrosine phosphorylation of receptor tyrosine kinases. Peptides 2021; 137:170480. [PMID: 33385499 DOI: 10.1016/j.peptides.2020.170480] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 12/17/2020] [Accepted: 12/17/2020] [Indexed: 12/12/2022]
Abstract
Numerous peptides including bombesin (BB), endothelin (ET), neurotensin (NTS) and pituitary adenylate cyclase-activating polypeptide (PACAP) are growth factors for lung cancer cells. The peptides bind to G protein-coupled receptors (GPCRs) resulting in elevated cAMP and/or phosphatidylinositol (PI) turnover. In contrast, growth factors such as epidermal growth factor (EGF) or neuregulin (NRG)-1 bind to receptor tyrosine kinases (RTKs) such as the EGFR or HER3, increasing tyrosine kinase activity, resulting in the phosphorylation of protein substrates such as PI3K or phospholipase (PL)C. Peptide GPCRs can transactivate numerous RTKs, especially members of the EGFR/HER family resulting in increased phosphorylation of ERK, leading to cellular proliferation or increased phosphorylation of AKT, leading to cellular survival. GRCR antagonists and tyrosine kinase inhibitors are useful agents to prevent RTK transactivation and inhibit proliferation of cancer cells.
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Affiliation(s)
- Terry W Moody
- Department of Health and Human Services, National Institutes of Health, National Cancer Institute, Center for Cancer Training, Bethesda, MD, 20892, USA.
| | - Irene Ramos-Alvarez
- National Institute of Diabetes, Digestive and Kidney Disease, Digestive Diseases Branch, 9000 Rockville Pike, Bethesda, MD, 20892 USA
| | - Robert T Jensen
- National Institute of Diabetes, Digestive and Kidney Disease, Digestive Diseases Branch, 9000 Rockville Pike, Bethesda, MD, 20892 USA
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Truong V, Jain A, Anand-Srivastava MB, Srivastava AK. Angiotensin II-induced histone deacetylase 5 phosphorylation, nuclear export, and Egr-1 expression are mediated by Akt pathway in A10 vascular smooth muscle cells. Am J Physiol Heart Circ Physiol 2021; 320:H1543-H1554. [PMID: 33606583 DOI: 10.1152/ajpheart.00683.2020] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Angiotensin II (ANG II) regulates an array of physiological and pathological responses in vascular smooth muscle cells (VSMCs) by activating ERK1/2 and phosphoinositide 3-kinase (PI3K)/Akt signaling pathways. We have demonstrated that ANG II and insulin-like growth factor-1 (IGF-1) induce the expression of early growth response protein-1 (Egr-1), a zinc finger transcription factor, which regulates the transcription of cell cycle regulatory genes network in VSMCs. We have reported that IGF-1 induces the phosphorylation of histone deacetylase 5 (HDAC5), which has been implicated in the expression of genes linked to VSMC growth and hypertrophy, via a PI3K/Akt-dependent pathway in VSMCs. However, the involvement of PI3K/Akt pathways in ANG II-induced HDAC5 phosphorylation and the contribution of HDAC5 in Egr-1 expression and hypertrophy in VSMCs remain unexplored. Here, we show that pharmacological blockade of the PI3K/Akt pathway either by wortmannin/SC66 or siRNA-induced silencing of Akt attenuated ANG II-induced HDAC5 phosphorylation and its nuclear export. Moreover, SC66 or Akt knockdown also suppressed ANG II-induced Egr-1 expression. Furthermore, pharmacological inhibition of HDAC5 by MC1568 or TMP-195 or knockdown of HDAC5 and the blockade of the nuclear export of HDAC5 by leptomycin B or KPT-330 significantly reduced ANG II-induced Egr-1 expression. In addition, depletion of either HDAC5 or Egr-1 by siRNA attenuated VSMC hypertrophy in response to ANG II. In summary, our results demonstrate that ANG II-induced HDAC5 phosphorylation and its nuclear exclusion are mediated by PI3K/Akt pathway and HDAC5 is an upstream regulator of Egr-1 expression and hypertrophy in VSMCs.NEW & NOTEWORTHY ANG II-induced histone deacetylase 5 (HDAC5) phosphorylation and nuclear export occurs via the phosphoinositide 3-kinase/Akt pathway. Akt, through HDAC5, regulates ANG II-induced expression of early growth response protein-1 (Egr-1), which is a transcription factor linked with vascular dysfunction. Inhibition of HDAC5 exclusion by nuclear export inhibitors suppresses ANG II-induced Egr-1 expression. HDAC5 is an upstream mediator of Egr-1 expression and cell hypertrophy in response to ANG II in vascular smooth muscle cells.
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Affiliation(s)
- Vanessa Truong
- Laboratory of Cellular Signaling, Montreal Diabetes Research Center and Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada
| | - Ashish Jain
- Laboratory of Cellular Signaling, Montreal Diabetes Research Center and Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada
| | - Madhu B Anand-Srivastava
- Department of Pharmacology and Physiology, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada
| | - Ashok K Srivastava
- Laboratory of Cellular Signaling, Montreal Diabetes Research Center and Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada.,Department of Medicine, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada
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Early Growth Response Protein-1 Expression by Insulin-Like Growth Factor-1 Requires ROS-Dependent Activation of ERK1/2 and PKB Pathways in Vascular Smooth Muscle Cells. J Cell Biochem 2015; 117:152-62. [DOI: 10.1002/jcb.25260] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 06/12/2015] [Indexed: 01/03/2023]
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Haan YC, Oudman I, de Lange ME, Timmermans A, Ankum WM, van Montfrans GA, Brewster LM. Hypertension risk in Dutch women with symptomatic uterine fibroids. Am J Hypertens 2015; 28:487-92. [PMID: 25241046 DOI: 10.1093/ajh/hpu183] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Female-specific risk factors for cardiovascular disease are understudied. We assessed whether women with uterine fibroids have a greater hypertension risk, independent of the shared risk factors for both conditions. METHODS Blood pressure was measured in women scheduled for fibroid surgery compared to women scheduled for nonfibroid gynecological surgery and women randomly sampled from the general population. We used multivariable binary logistic regression to assess whether hypertension was more common with surgically treated fibroids, independent of age, body mass index, and African ancestry. RESULTS We included 1,342 women (542 of African ancestry), of which 272 scheduled for fibroid surgery, 385 controls scheduled for nonfibroid gynecological surgery, and 685 random population controls, with a mean age (SD) of, respectively, 43.4 (6.6), 41.3 (10.2), and 45.1 (6.6) years; and a mean body mass index (SD) of, respectively, 27.4 (5.3), 25.7 (5.7), and 28.2 (5.6) kg/m(2). Hypertension was found more frequently with surgically treated fibroids, with an occurrence of 41.9% in women with fibroids vs. 27.5% in surgical controls, and 28.3% in population controls (P < 0.001 for fibroids vs. controls). The association with hypertension was independent of age, body mass index, and African ancestry (odds ratio, 2.4; 95% confidence interval, 1.7-3.4). CONCLUSIONS Hypertension risk is higher in Dutch women with surgically treated fibroids than in surgery or population controls, independent of age, body mass index, and African ancestry. Our data add to the body of evidence indicating that women with uterine fibroids are eligible for hypertension screening.
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Affiliation(s)
- Yentl C Haan
- Department of Vascular Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands;
| | - Inge Oudman
- Department of Vascular Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Maria E de Lange
- Department of Gynaecology and Obstetrics, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Anne Timmermans
- Department of Gynaecology and Obstetrics, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Willem M Ankum
- Department of Gynaecology and Obstetrics, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Gert A van Montfrans
- Department of Vascular Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands; Department of Internal Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Lizzy M Brewster
- Department of Vascular Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands; Department of Internal Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands; Department of Social Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
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Wang X, Yu C, Zhang B, Wang Y. The Injurious Effects of Hyperinsulinism on Blood Vessels. Cell Biochem Biophys 2013; 69:213-8. [DOI: 10.1007/s12013-013-9810-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Youreva V, Kapakos G, Srivastava AK. Insulin-like growth-factor-1-induced PKB signaling and Egr-1 expression is inhibited by curcumin in A-10 vascular smooth muscle cells. Can J Physiol Pharmacol 2013; 91:241-7. [DOI: 10.1139/cjpp-2012-0267] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Insulin-like growth factor 1 (IGF-1) is a mitogenic factor that stimulates the signaling pathways responsible for inducing hypertrophic and proliferative responses in vascular smooth muscle cells (VSMC). We have previously demonstrated that IGF-1 receptor (IGF-1R) plays a key role in transducing the hypertrophic and proliferative responses of angiotensin II (Ang-II) and endothelin-1 (ET-1). Curcumin, a polyphenolic compound derived from the spice turmeric is known to possess antiproliferative properties and exerts vasculoprotective effects. However, the ability of curcumin to modulate IGF-1-induced signaling responses in VSMC remains to be investigated. In this study, we determined the effect of curcumin on IGF-1-induced phosphorylation of protein kinase B (PKB), glycogen synthase kinase-3β (GSK-3β), and IGF-1R in VSMC. Curcumin inhibited IGF-1-induced phosphorylation of PKB and GSK-3β as well as the IGF-1R β subunit in a dose-dependent fashion. In addition, IGF-1-induced expression of early growth response protein 1 (Egr-1) which plays a pathogenic role in vascular dysfunctions, was also attenuated by curcumin. In conclusion, these results indicate that curcumin is a potent inhibitor of key components of the IGF-1-induced mitogenic and proliferative signaling system in VSMC, and suggest that curcumin-induced attenuation of these signaling components may constitute a potential mechanism for its vasculoprotective effects.
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Affiliation(s)
- Viktoria Youreva
- Laboratory of Cell Signaling, Montreal Diabetes Research Center, Research Centre of Centre Hospitalier de l'Université de Montréal (CRCHUM) – Angus Campus, 2901 Rachel Est, and Department of Medicine, Université de Montréal, Montréal, QC H1W 4A4, Canada
| | - Georgia Kapakos
- Laboratory of Cell Signaling, Montreal Diabetes Research Center, Research Centre of Centre Hospitalier de l'Université de Montréal (CRCHUM) – Angus Campus, 2901 Rachel Est, and Department of Medicine, Université de Montréal, Montréal, QC H1W 4A4, Canada
| | - Ashok K. Srivastava
- Laboratory of Cell Signaling, Montreal Diabetes Research Center, Research Centre of Centre Hospitalier de l'Université de Montréal (CRCHUM) – Angus Campus, 2901 Rachel Est, and Department of Medicine, Université de Montréal, Montréal, QC H1W 4A4, Canada
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