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Bilancio A, Rinaldi B, Oliviero MA, Donniacuo M, Monti MG, Boscaino A, Marino I, Friedman L, Rossi F, Vanhaesebroeck B, Migliaccio A. Inhibition of p110δ PI3K prevents inflammatory response and restenosis after artery injury. Biosci Rep 2017; 37:BSR20171112. [PMID: 28851839 PMCID: PMC5617917 DOI: 10.1042/bsr20171112] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 08/18/2017] [Accepted: 08/22/2017] [Indexed: 12/13/2022] Open
Abstract
Inflammatory cells play key roles in restenosis upon vascular surgical procedures such as bypass grafts, angioplasty and stent deployment but the molecular mechanisms by which these cells affect restenosis remain unclear. The p110δ isoform of phosphoinositide 3-kinase (PI3K) is mainly expressed in white blood cells. Here, we have investigated whether p110δ PI3K is involved in the pathogenesis of restenosis in a mouse model of carotid injury, which mimics the damage following arterial grafts. We used mice in which p110δ kinase activity has been disabled by a knockin (KI) point mutation in its ATP-binding site (p110δD910A/D910A PI3K mice). Wild-type (WT) and p110δD910A/D910A mice were subjected to longitudinal carotid injury. At 14 and 30 days after carotid injury, mice with inactive p110δ showed strongly decreased infiltration of inflammatory cells (including T lymphocytes and macrophages) and vascular smooth muscle cells (VSMCs), compared with WT mice. Likewise, PI-3065, a p110δ-selective PI3K inhibitor, almost completely prevented restenosis after artery injury. Our data showed that p110δ PI3K plays a main role in promoting neointimal thickening and inflammatory processes during vascular stenosis, with its inhibition providing significant reduction in restenosis following carotid injury. p110δ-selective inhibitors, recently approved for the treatment of human B-cell malignancies, therefore, present a new therapeutic opportunity to prevent the restenosis upon artery injury.
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Affiliation(s)
- Antonio Bilancio
- Department of Biochemistry, Biophysics and General Pathology, University of Campania "L. Vanvitelli", Naples, Italy
| | - Barbara Rinaldi
- Department of Experimental Medicine, Section of Pharmacology "L. Donatelli", University of Campania "L. Vanvitelli", Naples, Italy
| | - Maria Antonietta Oliviero
- Department of Biochemistry, Biophysics and General Pathology, University of Campania "L. Vanvitelli", Naples, Italy
| | - Maria Donniacuo
- Department of Experimental Medicine, Section of Pharmacology "L. Donatelli", University of Campania "L. Vanvitelli", Naples, Italy
| | - Maria Gaia Monti
- Department of Medical Translational Science, University of Naples "Federico II", Naples, Italy
| | - Amedeo Boscaino
- Department of Histopathology, AORN "Cardarelli", Naples, Italy
| | - Irene Marino
- Department of Biochemistry, Biophysics and General Pathology, University of Campania "L. Vanvitelli", Naples, Italy
| | - Lori Friedman
- Translational Oncology, Genentech Inc, South San Francisco, CA, U.S.A
| | - Francesco Rossi
- Department of Experimental Medicine, Section of Pharmacology "L. Donatelli", University of Campania "L. Vanvitelli", Naples, Italy
- Department of Experimental Medicine, Section of Pharmacology "L. Donatelli", Regional Centre for Pharmacovigilance and Pharmaco-epidemiology - University of Campania "L. Vanvitelli", Naples, Italy
| | - Bart Vanhaesebroeck
- Cell Signalling, UCL Cancer Institute, Paul O'Gorman Building, University College London, 72 Huntley Street, London WC1E 6BT, U.K
| | - Antimo Migliaccio
- Department of Biochemistry, Biophysics and General Pathology, University of Campania "L. Vanvitelli", Naples, Italy
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Song Z, Zhu X, Jin R, Wang C, Yan J, Zheng Q, Nanda A, Granger DN, Li G. Roles of the kinase TAK1 in CD40-mediated effects on vascular oxidative stress and neointima formation after vascular injury. PLoS One 2014; 9:e101671. [PMID: 25050617 PMCID: PMC4106789 DOI: 10.1371/journal.pone.0101671] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Accepted: 05/29/2014] [Indexed: 12/18/2022] Open
Abstract
Although TAK1 has been implicated in inflammation and oxidative stress, its roles in vascular smooth muscle cells (VSMCs) and in response to vascular injury have not been investigated. The present study aimed to investigate the role of TAK1 in modulating oxidative stress in VSMCs and its involvement in neointima formation after vascular injury. Double immunostaining reveals that vascular injury induces a robust phosphorylation of TAK1 (Thr187) in the medial VSMCs of injured arteries in wildtype mice, but this effect is blocked in CD40-deficient mice. Upregulation of TAK1 in VSMCs is functionally important, as it is critically involved in pro-oxidative and pro-inflammatory effects on VSMCs and eventual neointima formation. In vivo, pharmacological inhibition of TAK1 with 5Z-7-oxozeaenol blocked the injury-induced phosphorylation of both TAK1 (Thr187) and NF-kB/p65 (Ser536), associated with marked inhibition of superoxide production, 3-nitrotyrosine, and MCP-1 in the injured arteries. Cell culture experiments demonstrated that either siRNA knockdown or 5Z-7-oxozeaenol inhibition of TAK1 significantly attenuated NADPH oxidase activation and superoxide production induced by CD40L/CD40 stimulation. Co-immunoprecipitation experiments indicate that blockade of TAK1 disrupted the CD40L-induced complex formation of p22phox with p47phox, p67phox, or Nox4. Blockade of TAK1 also inhibited CD40L-induced NF-kB activation by modulating IKKα/β and NF-kB p65 phosphorylation and this was related to reduced expression of proinflammatory genes (IL-6, MCP-1 and ICAM-1) in VSMCs. Lastly, treatment with 5Z-7-oxozeaenol attenuated neointimal formation in wire-injured femoral arteries. Our findings demonstrate previously uncharacterized roles of TAK1 in vascular oxidative stress and the contribution to neointima formation after vascular injury.
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Affiliation(s)
- Zifang Song
- Vascular Biology and Stroke Research Laboratory, Department of Neurosurgery, LSU Health Science Center in Shreveport, Shreveport, Louisiana, United States of America
- Department of General Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaolei Zhu
- Vascular Biology and Stroke Research Laboratory, Department of Neurosurgery, LSU Health Science Center in Shreveport, Shreveport, Louisiana, United States of America
| | - Rong Jin
- Vascular Biology and Stroke Research Laboratory, Department of Neurosurgery, LSU Health Science Center in Shreveport, Shreveport, Louisiana, United States of America
| | - Cuiping Wang
- Vascular Biology and Stroke Research Laboratory, Department of Neurosurgery, LSU Health Science Center in Shreveport, Shreveport, Louisiana, United States of America
- Department of Cardiology, The Affiliated Hospital of Jiangsu University, Jiangsu, Zhenjiang, China
| | - Jinchuan Yan
- Department of Cardiology, The Affiliated Hospital of Jiangsu University, Jiangsu, Zhenjiang, China
| | - Qichang Zheng
- Department of General Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Anil Nanda
- Vascular Biology and Stroke Research Laboratory, Department of Neurosurgery, LSU Health Science Center in Shreveport, Shreveport, Louisiana, United States of America
| | - D. Neil Granger
- Department of Physiology, LSU Health Science Center in Shreveport, Shreveport, Louisiana, United States of America
| | - Guohong Li
- Vascular Biology and Stroke Research Laboratory, Department of Neurosurgery, LSU Health Science Center in Shreveport, Shreveport, Louisiana, United States of America
- Department of Physiology, LSU Health Science Center in Shreveport, Shreveport, Louisiana, United States of America
- * E-mail:
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Holy EW, Jakob P, Eickner T, Camici GG, Beer JH, Akhmedov A, Sternberg K, Schmitz KP, Lüscher TF, Tanner FC. PI3K/p110α inhibition selectively interferes with arterial thrombosis and neointima formation, but not re-endothelialization: potential implications for drug-eluting stent design. Eur Heart J 2014; 35:808-20. [PMID: 24334406 DOI: 10.1093/eurheartj/eht496] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2023] Open
Abstract
BACKGROUND Impaired re-endothelialization and stent thrombosis are a safety concern associated with drug-eluting stents (DES). PI3K/p110α controls cellular wound healing pathways, thereby representing an emerging drug target to modulate vascular homoeostasis after injury. METHODS AND RESULTS PI3K/p110α was inhibited by treatment with the small molecule inhibitor PIK75 or a specific siRNA. Arterial thrombosis, neointima formation, and re-endothelialization were studied in a murine carotid artery injury model. Proliferation and migration of human vascular smooth muscle cell (VSMC) and endothelial cell (EC) were assessed by cell number and Boyden chamber, respectively. Endothelial senescence was evaluated by the β-galactosidase assay, endothelial dysfunction by organ chambers for isometric tension. Arterial thrombus formation was delayed in mice treated with PIK75 when compared with controls. PIK75 impaired arterial expression and activity of tissue factor (TF) and plasminogen activator inhibitor-1 (PAI-1); in contrast, plasma clotting and platelet aggregation did not differ. In VSMC and EC, PIK75 inhibited expression and activity of TF and PAI-1. These effects occurred at the transcriptional level via the RhoA signalling cascade and the transcription factor NFkB. Furthermore, inhibition of PI3K/p110α with PIK75 or a specific siRNA selectively impaired proliferation and migration of VSMC while sparing EC completely. Treatment with PIK75 did not induce endothelial senescence nor inhibit endothelium-dependent relaxations. In line with this observation, treatment with PIK75 selectively inhibited neointima formation without affecting re-endothelialization following vascular injury. CONCLUSION Following vascular injury, PI3K/p110α inhibition selectively interferes with arterial thrombosis and neointima formation, but not re-endothelialization. Hence, PI3K/p110α represents an attractive new target in DES design.
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Affiliation(s)
- Erik W Holy
- Cardiology, Cardiovascular Center, University Hospital Zürich, Rämistrasse 100, Zurich 8091, Switzerland
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Ki SH, Lee JW, Lim SC, Hien TT, Im JH, Oh WK, Lee MY, Ji YH, Kim YG, Kang KW. Protective effect of nectandrin B, a potent AMPK activator on neointima formation: inhibition of Pin1 expression through AMPK activation. Br J Pharmacol 2013; 168:932-45. [PMID: 23004677 PMCID: PMC3631381 DOI: 10.1111/j.1476-5381.2012.02228.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Revised: 09/01/2012] [Accepted: 09/06/2012] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND AND PURPOSE Neointima is considered a critical event in the development of vascular occlusive disease. Nectandrin B from nutmeg functions as a potent AMP-activated protein kinase (AMPK) activators. The present study addressed whether nectandrin B inhibits intimal hyperplasia in guide wire-injured arteries and examined its molecular mechanism. EXPERIMENTAL APPROACH Neointima was induced by guide wire injury in mouse femoral arteries. Cell proliferation and mechanism studies were performed in rat vascular smooth muscle cells (VSMC) culture model. KEY RESULTS Nectandrin B increased AMPK activity in VSMC. Nectandrin B inhibited the cell proliferation induced by PDGF and DNA synthesis. Moreover, treatment of nectandrin B suppressed neointima formation in femoral artery after guide wire injury. We have recently shown that Pin1 plays a critical role in VSMC proliferation and neointima formation. Nectandrin B potently blocked PDGF-induced Pin1 and cyclin D1 expression and nectandrin B's anti-proliferation effect was diminished in Pin1 overexpressed VSMC. PDGF-induced phosphorylation of ERK and Akt was marginally affected by nectandrin B. However, nectandrin B increased the levels of p53 and its downstream target p21 and, also reversibly decreased the expression of E2F1 and phosphorylated Rb in PDGF-treated VSMC. AMPK inhibition by dominant mutant form of adenovirus rescued nectandrin B-mediated down-regulation of Pin1 and E2F1. CONCLUSIONS AND IMPLICATIONS Nectandrin B inhibited VSMC proliferation and neointima formation via inhibition of E2F1-dependent Pin1 gene transcription, which is mediated through the activation of an AMPK/p53-triggered pathway.
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Affiliation(s)
- Sung Hwan Ki
- BK21 Project Team, College of Pharmacy, Chosun UniversityGwangju, South Korea
| | - Jung-Woon Lee
- BK21 Project Team, College of Pharmacy, Chosun UniversityGwangju, South Korea
| | - Sung Chul Lim
- Department of Pathology, College of Medicine, Chosun UniversityGwangju, South Korea
| | - Tran Thi Hien
- BK21 Project Team, College of Pharmacy, Chosun UniversityGwangju, South Korea
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Seoul National UniversitySeoul, South Korea
| | - Ji Hye Im
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Seoul National UniversitySeoul, South Korea
| | - Won Keun Oh
- BK21 Project Team, College of Pharmacy, Chosun UniversityGwangju, South Korea
| | - Moo Yeol Lee
- College of Pharmacy, Dongguk UniversityGoyang, Gyeonggi-do, South Korea
| | - Young Hyun Ji
- College of Pharmacy, Dangook UniversityCheonan, South Korea
| | - Yoon Gyoon Kim
- College of Pharmacy, Dangook UniversityCheonan, South Korea
| | - Keon Wook Kang
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Seoul National UniversitySeoul, South Korea
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Liu S, Lv J, Han L, Ichikawa T, Wang W, Li S, Wang XL, Tang D, Cui T. A pro-inflammatory role of deubiquitinating enzyme cylindromatosis (CYLD) in vascular smooth muscle cells. Biochem Biophys Res Commun 2012; 420:78-83. [PMID: 22406061 DOI: 10.1016/j.bbrc.2012.02.118] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2012] [Accepted: 02/18/2012] [Indexed: 12/17/2022]
Abstract
CYLD, a deubiquitinating enzyme (DUB), is a critical regulator of diverse cellular processes, ranging from proliferation and differentiation to inflammatory responses, via regulating multiple key signaling cascades such as nuclear factor kappa B (NF-κB) pathway. CYLD has been shown to inhibit vascular lesion formation presumably through suppressing NF-κB activity in vascular cells. However, herein we report a novel role of CYLD in mediating pro-inflammatory responses in vascular smooth muscle cells (VSMCs) via a mechanism independent of NF-κB activity. Adenoviral knockdown of Cyld inhibited basal and the tumor necrosis factor alpha (TNFα)-induced mRNA expression of pro-inflammatory cytokines including monocyte chemotactic protein-1 (Mcp-1), intercellular adhesion molecule (Icam-1) and interleukin-6 (Il-6) in rat adult aortic SMCs (RASMCs). The CYLD deficiency led to increases in the basal NF-κB transcriptional activity in RASMCs; however, did not affect the TNFα-induced NF-κB activity. Intriguingly, the TNFα-induced IκB phosphorylation was enhanced in the CYLD deficient RASMCs. While knocking down of Cyld decreased slightly the basal expression levels of IκBα and IκBβ proteins, it did not alter the kinetics of TNFα-induced IκB protein degradation in RASMCs. These results indicate that CYLD suppresses the basal NF-κB activity and TNFα-induced IκB kinase activation without affecting TNFα-induced NF-κB activity in VSMCs. In addition, knocking down of Cyld suppressed TNFα-induced activation of mitogen activated protein kinases (MAPKs) including extracellular signal-activated kinases (ERK), c-Jun N-terminal kinase (JNK), and p38 in RASMCs. TNFα-induced RASMC migration and monocyte adhesion to RASMCs were inhibited by the Cyld knockdown. Finally, immunochemical staining revealed a dramatic augment of CYLD expression in the injured coronary artery with neointimal hyperplasia. Taken together, our results uncover an unexpected role of CYLD in promoting inflammatory responses in VSMCs via a mechanism involving MAPK activation but independent of NF-κB activity, contributing to the pathogenesis of vascular disease.
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Affiliation(s)
- Shuai Liu
- Shandong University Qilu Hospital Research Center for Cell Therapy, Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital of Shandong University, Jinan 250012, China
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Wang JN, Shi N, Chen SY. Manganese superoxide dismutase inhibits neointima formation through attenuation of migration and proliferation of vascular smooth muscle cells. Free Radic Biol Med 2012; 52:173-81. [PMID: 22062629 PMCID: PMC3356780 DOI: 10.1016/j.freeradbiomed.2011.10.442] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Revised: 10/13/2011] [Accepted: 10/15/2011] [Indexed: 11/28/2022]
Abstract
Superoxide anion is elevated during neointima development and is essential for neointimal vascular smooth muscle cell (VSMC) proliferation. However, little is known about the role of manganese superoxide dismutase (MnSOD, SOD2) in the neointima formation following vascular injury. SOD2 in the mitochondria plays an important role in cellular defense against oxidative damage. Because of its subcellular localization, SOD2 is considered the first line of defense against oxidative stress and plays a central role in metabolizing superoxide. Because mitochondria are the most important sources of superoxide anion, we speculated that SOD2 may have therapeutic benefits in preventing vascular remodeling. In this study, we used a rat carotid artery balloon-injury model and an adenoviral gene delivery approach to test the hypothesis that SOD2 suppresses vascular lesion formation. SOD2 was activated along with the progression of neointima formation in balloon-injured rat carotid arteries. Depletion of SOD2 by RNA interference markedly promoted the lesion formation, whereas SOD2 overexpression suppressed the injury-induced neointima formation via attenuation of migration and proliferation of VSMCs. SOD2 exerts its inhibitory effect on VSMC migration induced by angiotensin II by scavenging superoxide anion and suppressing the phosphorylation of Akt. Our data indicate that SOD2 is a negative modulator of vascular lesion formation after injury. Therefore, SOD2 augmentation may be a promising therapeutic strategy for the prevention of lesion formation in proliferative vascular diseases such as restenosis.
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Affiliation(s)
- Jia-Ning Wang
- Department of Physiology & Pharmacology, University of Georgia, Athens, GA 30602, USA
- Institute of Clinical Medicine and Department of Cardiology, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, China
| | - Ning Shi
- Department of Physiology & Pharmacology, University of Georgia, Athens, GA 30602, USA
| | - Shi-You Chen
- Department of Physiology & Pharmacology, University of Georgia, Athens, GA 30602, USA
- Corresponding author. Fax: +1 706 5423015. (S.-Y. Chen)
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