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Tan RP, Hung JC, Chan AHP, Grant AJ, Moore MJ, Lam YT, Michael P, Wise SG. Highly reproducible rat arterial injury model of neointimal hyperplasia. PLoS One 2023; 18:e0290342. [PMID: 37590291 PMCID: PMC10434902 DOI: 10.1371/journal.pone.0290342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 08/03/2023] [Indexed: 08/19/2023] Open
Abstract
Models of arterial injury in rodents have been invaluable to our current understanding of vessel restenosis and play a continuing role in the development of endovascular interventions for cardiovascular disease. Mechanical distention of the vessel wall and denudation of the vessel endothelium are the two major modes of vessel injury observed in most clinical pathologies and are critical to the reproducible modelling of progressive neointimal hyperplasia. The current models which have dominated this research area are the mouse wire carotid or femoral injury and the rat carotid balloon injury. While these elicit simultaneous distension of the vessel wall and denudation of the luminal endothelium, each model carries limitations that need to be addressed using a complementary injury model. Wire injuries in mice are highly technical and procedurally challenging due to small vessel diameters, while rat balloon injuries require permanent blood vessel ligation and disruption of native blood flow. Complementary models of vascular injury with reproducibility, convenience, and increased physiological relevance to the pathophysiology of endovascular injury would allow for improved studies of neointimal hyperplasia in both basic and translational research. In this study, we developed a new surgical model that elicits vessel distention and endothelial denudation injury using sequential steps using microforceps and a standard needle catheter inserted via arteriotomy into a rat common carotid artery, without requiring permanent ligation of branching arteries. After 2 weeks post-injury this model elicits highly reproducible neointimal hyperplasia and rates of re-endothelialisation similar to current wire and balloon injury models. Furthermore, evaluation of the smooth muscle cell phenotype profile, inflammatory response and extracellular matrix within the developing neointima, showed that our model replicated the vessel remodelling outcomes critical to restenosis and those becoming increasingly focused upon in the development of new anti-restenosis therapies.
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Affiliation(s)
- Richard P. Tan
- Faculty of Health and Medicine, School of Medical Sciences, University of Sydney, Sydney, NSW, Australia
- Charles Perkins Centre, University of Sydney, Sydney, NSW, Australia
| | - Jui Chien Hung
- Faculty of Health and Medicine, School of Medical Sciences, University of Sydney, Sydney, NSW, Australia
- Charles Perkins Centre, University of Sydney, Sydney, NSW, Australia
| | - Alex H. P. Chan
- Faculty of Health and Medicine, School of Medical Sciences, University of Sydney, Sydney, NSW, Australia
- Charles Perkins Centre, University of Sydney, Sydney, NSW, Australia
| | - Angus J. Grant
- Faculty of Health and Medicine, School of Medical Sciences, University of Sydney, Sydney, NSW, Australia
- Charles Perkins Centre, University of Sydney, Sydney, NSW, Australia
| | - Matthew J. Moore
- Faculty of Health and Medicine, School of Medical Sciences, University of Sydney, Sydney, NSW, Australia
- Charles Perkins Centre, University of Sydney, Sydney, NSW, Australia
| | - Yuen Ting Lam
- Faculty of Health and Medicine, School of Medical Sciences, University of Sydney, Sydney, NSW, Australia
- Charles Perkins Centre, University of Sydney, Sydney, NSW, Australia
| | - Praveesuda Michael
- Faculty of Health and Medicine, School of Medical Sciences, University of Sydney, Sydney, NSW, Australia
- Charles Perkins Centre, University of Sydney, Sydney, NSW, Australia
| | - Steven G. Wise
- Faculty of Health and Medicine, School of Medical Sciences, University of Sydney, Sydney, NSW, Australia
- Charles Perkins Centre, University of Sydney, Sydney, NSW, Australia
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Yan Q, Jiang L, Liu M, Yu D, Zhang Y, Li Y, Fang S, Li Y, Zhu YH, Yuan YF, Guan XY. ANGPTL1 Interacts with Integrin α1β1 to Suppress HCC Angiogenesis and Metastasis by Inhibiting JAK2/STAT3 Signaling. Cancer Res 2017; 77:5831-5845. [DOI: 10.1158/0008-5472.can-17-0579] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 07/15/2017] [Accepted: 08/25/2017] [Indexed: 11/16/2022]
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Baek SE, Jang MA, Lee SJ, Park SY, Bae SS, Kim CD. 5-Lipoxygenase in monocytes emerges as a therapeutic target for intimal hyperplasia in a murine wire-injured femoral artery. Biochim Biophys Acta Mol Basis Dis 2017. [PMID: 28645655 DOI: 10.1016/j.bbadis.2017.06.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Given the importance of leukotrienes in vascular inflammation induced by local tissue injury, this study investigated the role for 5-lipoxygenase (5-LO) in monocytes in the development of intimal hyperplasia. As a mechanistic study, the importance of monocyte 5-LO in monocyte-macrophage differentiation with subsequent infiltration in neointima was evaluated. In a mouse model of wire-injured femoral artery, intimal hyperplasia started as early as 2wks after injury, and luminal area and blood flow were reduced due to increased neointima formation. Time-dependent increases in macrophage infiltration were observed in neointima and showed a positive relationship with neointima volume. In 5-LO-deficient (KO) mice or wild-type (WT) mice treated with an inhibitor of 5-LO activating protein (MK886, 1 and 10mg/kg), intimal hyperplasia and macrophage infiltration into neointima were reduced, but monocyte adhesion to injured luminal surface was not inhibited, which suggested 5-LO participates in monocyte-macrophage differentiation. In an in vitro study, monocyte-macrophage differentiation was found to be increased by high mobility group box 1 protein (HMGB1), but this effect was attenuated in cells isolated from 5-LO-KO mice. Furthermore, macrophage infiltration and intimal hyperplasia were more prominent in 5-LO-KO mice transplanted with monocytes from WT mice than in 5-LO-KO mice transplanted with monocytes from 5-LO-KO mice. Taken together, it was suggested that 5-LO in monocytes played a pivotal role in monocyte-macrophage differentiation and subsequent infiltration of macrophage in neointima, leading to vascular remodeling after vascular injury.
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Affiliation(s)
- Seung Eun Baek
- Department of Pharmacology, School of Medicine and Gene & Cell Therapy Research Center for Vessel-associated Diseases, Pusan National University, Yangsan, Gyeongnam 50612, Republic of Korea
| | - Min A Jang
- Department of Pharmacology, School of Medicine and Gene & Cell Therapy Research Center for Vessel-associated Diseases, Pusan National University, Yangsan, Gyeongnam 50612, Republic of Korea
| | - Seung Jin Lee
- College of Pharmacy, Pusan National University, Pusan 609-735, Republic of Korea
| | - So Youn Park
- Department of Pharmacology, School of Medicine and Gene & Cell Therapy Research Center for Vessel-associated Diseases, Pusan National University, Yangsan, Gyeongnam 50612, Republic of Korea
| | - Sun Sik Bae
- Department of Pharmacology, School of Medicine and Gene & Cell Therapy Research Center for Vessel-associated Diseases, Pusan National University, Yangsan, Gyeongnam 50612, Republic of Korea
| | - Chi Dae Kim
- Department of Pharmacology, School of Medicine and Gene & Cell Therapy Research Center for Vessel-associated Diseases, Pusan National University, Yangsan, Gyeongnam 50612, Republic of Korea.
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The inhibition of calpains ameliorates vascular restenosis through MMP2/TGF-β1 pathway. Sci Rep 2016; 6:29975. [PMID: 27453531 PMCID: PMC4958998 DOI: 10.1038/srep29975] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 06/28/2016] [Indexed: 01/16/2023] Open
Abstract
Restenosis limits the efficacy of vascular percutaneous intervention, in which vascular smooth muscle cell (VSMC) proliferation and activation of inflammation are two primary causal factors. Calpains influence VSMC proliferation and collagen synthesis. However, the roles of calpastatin and calpains in vascular restenosis remain unclear. Here, restenosis was induced by ligating the left carotid artery, and VSMCs were pretreated with platelet-derived growth factor (PDGF)-BB. Adenovirus vector carrying MMP2 sequence and specific small interfering RNA against calpain-1/2 were introduced. Finally, restenosis enhanced the expression of calpain-1/2, but reduced calpastatin content. In calpastatin transgenic mice, lumen narrowing was attenuated gradually and peaked on days 14-21. Cell proliferation and migration as well as collagen synthesis were inhibited in transgenic mice, and expression of calpain-1/2 and MMP2/transforming growth factor-β1 (TGF-β1). Consistently, in VSMCs pretreated with PDGF-BB, calpastatin induction and calpains inhibition suppressed the proliferation and migration of VSMCs and collagen synthesis, and reduced expression of calpain-1/2 and MMP2/TGF-β1. Moreover, simvastatin improved restenosis indicators by suppressing the HIF-1α/calpains/MMP2/TGF-β1 pathway. However, MMP2 supplementation eliminated the vascular protection of calpastatin induction and simvastatin. Collectively, calpains inhibition plays crucial roles in vascular restenosis by preventing neointimal hyperplasia at the early stage via suppression of the MMP2/TGF-β1 pathway.
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Lv L, Liang W, Ye M, Zhang J, Zhang H, Xue G, Zhang L. Thrombospondin-4 ablation reduces macrophage recruitment in adipose tissue and neointima and suppresses injury-induced restenosis in mice. Atherosclerosis 2016; 247:70-7. [PMID: 26868511 DOI: 10.1016/j.atherosclerosis.2016.02.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 01/19/2016] [Accepted: 02/02/2016] [Indexed: 12/24/2022]
Abstract
OBJECTIVE Thrombospondin-4 (Thbs4) is a member of the extracellular calcium-binding protein family and is linked to cell adhesion and migration. Given the involvement of Thbs4 in vascular inflammation, we hypothesized that Thbs4 plays a role in restenosis. METHODS AND RESULTS Here we show evidence that Thbs4 is upregulated in wire-injured mouse arteries and correlated with CD68 expression. Macrophage infiltration is reduced in both adipose tissue (AT) and neointima of Thbs4/ApoE double knockout (DKO) mice after injury. Moreover, Thbs4 deficiency prevents restenosis in ApoE KO mice fed a Western-type diet (WTD). Lethally irradiated DKO mice that receive bone marrow from ApoE KO or DKO mice have reduced neointima development. While considering related mechanisms, we note decreased chemokine production in both AT and neointima of DKO mice. In addition, vascular smooth muscle cells (VSMCs) derived from DKO mice display suppressed proliferation and migration in comparison with controls. Thioglycollate (TG)-induced macrophages from DKO mice show retarded adhesion to VSMCs. Recombinant Thbs4 promoted macrophage adhesion to VSMCs, and enhanced VSMC proliferation and migration. CONCLUSION Collectively, these data highlight the significance of Thbs4 in regulating macrophage accumulation and treating restenosis.
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Affiliation(s)
- Lei Lv
- Department of Vascular Surgery, Ren ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Wei Liang
- Department of Vascular Surgery, Ren ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Meng Ye
- Department of Vascular Surgery, Ren ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jiwei Zhang
- Department of Vascular Surgery, Ren ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Hao Zhang
- Department of Vascular Surgery, Ren ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Guanhua Xue
- Department of Vascular Surgery, Ren ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
| | - Lan Zhang
- Department of Vascular Surgery, Ren ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
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Tian S, Cao D, Zou H, Bai F, Wang Z, Pan S, Feng M. Endothelial cell-targeted pVEGF165 polyplex plays a pivotal role in inhibiting intimal thickening after vascular injury. Int J Nanomedicine 2015; 10:5751-68. [PMID: 26425083 PMCID: PMC4583553 DOI: 10.2147/ijn.s88109] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Upregulation of vascular endothelial growth factor (VEGF) expression can inhibit intimal thickening after vascular injury. However, the lack of efficient gene delivery systems leads to insufficient VEGF expression, which prevents its application in gene therapy. In the present study, to improve the delivery of the plasmid vector with the VEGF gene (pVEGF165) to the injured vessel wall, we explored the potentially important difference between endothelial cell-targeted and nontargeted polymeric carriers. The αvβ3 integrin is overexpressed on activated endothelial cells but not on normal quiescent vessels. In this study, CDG2-cRGD, synthesized by conjugating an αvβ3 integrin-binding cyclic arginylglycylaspartic acid (cRGD) peptide with the Generation 2 polycation polyamidoamine (PAMAMG2)-g-cyclodextrin (termed as CDG2), was developed as a targetable carrier. It was observed that the specific integrin-ligand interactions greatly enhanced cellular internalization of CDG2-cRGD in human umbilical vein endothelial cells (HUVECs), which are notoriously difficult to transfect. Consequently, HUVECs were found to show remarkably high levels of VEGF165 expression induced by the CDG2-cRGD polyplex. Interestingly, VEGF165 overexpression in vivo was more complex than that in vitro, and in vivo assays demonstrated that the stimulus response to balloon injury in arteries could obviously upregulate VEGF165 expression in the saline-treated group, although it was not enough to prevent intimal thickening. In gene-transfected groups, intravascular delivery of pVEGF165 with the CDG2-cRGD polyplex into rabbits after vascular injury resulted in a significant inhibition of intimal thickening at 4 weeks, whereas the low therapeutic efficacy in the nontargeted CDG2-treated group was only comparable to that in the saline-treated group. It is becoming clear that the conflicting results of VEGF165 gene therapy in two gene-transfected groups are reflective of the pivotal role of the cRGD-conjugated carriers in achieving the beneficial therapeutic effects of vascular gene therapy.
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Affiliation(s)
- Shouqin Tian
- School of Pharmaceutical Sciences, Department of Pharmacy, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Duanwen Cao
- Department of Pharmaceutical Sciences, Nanfang Hospital, Southern Medical University, Guangzhou, People's Republic of China
| | - Haijuan Zou
- School of Pharmaceutical Sciences, Department of Pharmacy, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Feng Bai
- School of Pharmaceutical Sciences, Department of Pharmacy, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Zhongjuan Wang
- School of Pharmaceutical Sciences, Department of Pharmacy, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Shirong Pan
- School of Pharmaceutical Sciences, Department of Pharmacy, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China ; Key Laboratory on Assisted Circulation, Ministry of Health, Guangzhou, People's Republic of China
| | - Min Feng
- School of Pharmaceutical Sciences, Department of Pharmacy, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
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Liu P, Kong F, Wang J, Lu Q, Xu H, Qi T, Meng J. Involvement of IGF-1 and MEOX2 in PI3K/Akt1/2 and ERK1/2 pathways mediated proliferation and differentiation of perivascular adipocytes. Exp Cell Res 2015; 331:82-96. [DOI: 10.1016/j.yexcr.2014.09.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Revised: 09/02/2014] [Accepted: 09/07/2014] [Indexed: 01/20/2023]
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Li L, Wang R, Shi HH, Xie LE, Li JDS, Kong WC, Tang JT, Ke DAN, Zhao LY. In vitro study on the feasibility of magnetic stent hyperthermia for the treatment of cardiovascular restenosis. Exp Ther Med 2013; 6:347-354. [PMID: 24137187 PMCID: PMC3786833 DOI: 10.3892/etm.2013.1177] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Accepted: 05/30/2013] [Indexed: 11/06/2022] Open
Abstract
Thermal treatment or hyperthermia has received considerable attention in recent years due to its high efficiency, safety and relatively few side-effects. In this study, we investigated whether it was possible to utilize targeted thermal or instent thermal treatments for the treatment of restenosis following percutaneous transluminal coronary angioplasty (PTCA) through magnetic stent hyperthermia (MSH). A 316L stainless steel stent and rabbit vascular smooth muscle cells (VSMCs) were used in the present study, in which the inductive heating characteristics of the stent under alternative magnetic field (AMF) exposure, as well as the effect of MSH on the proliferation, apoptosis, cell cycle and proliferating cell nuclear antigen (PCNA) expression of the rabbit VSMCs, were evaluated. The results demonstrated that 316L stainless steel coronary stents possess ideal inductive heating characteristics under 300 kHz AMF exposure. The heating properties were shown to be affected by the field intensity of the AMF, as well as the orientation the stent axis. MSH had a significant effect on the proliferation and apoptosis of VSMCs, and the effect was temperature-dependent. While a mild temperature of 43°C demonstrated negligible effects on the growth of VSMCs, MSH treatment above 47°C effectively inhibited the VSMC proliferation and induced apoptosis. Furthermore, a 47°C treatment exhibited a significant and long-term inhibitory effect on VSMC migration. The results strongly suggested that MSH may be potentially applied in the clinic as an alternative approach for the prevention and treatment of restenosis.
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Affiliation(s)
- Li Li
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan 410008; ; Institute of Medical Physics and Engineering, Key Laboratory of Particle & Radiation Imaging, Ministry of Education, Department of Engineering Physics, Tsinghua University, Beijing 100084
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Fishbein I, Forbes SP, Chorny M, Connolly JM, Adamo RF, Corrales RA, Alferiev IS, Levy RJ. Adenoviral vector tethering to metal surfaces via hydrolyzable cross-linkers for the modulation of vector release and transduction. Biomaterials 2013; 34:6938-48. [PMID: 23777912 DOI: 10.1016/j.biomaterials.2013.05.047] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Accepted: 05/23/2013] [Indexed: 01/16/2023]
Abstract
The use of arterial stents and other medical implants as a delivery platform for surface immobilized gene vectors allows for safe and efficient localized expression of therapeutic transgenes. In this study we investigate the use of hydrolyzable cross-linkers with distinct kinetics of hydrolysis for delivery of gene vectors from polyallylamine bisphosphonate-modified metal surfaces. Three cross-linkers with the estimated t1/2 of ester bonds hydrolysis of 5, 12 and 50 days demonstrated a cumulative 20%, 39% and 45% vector release, respectively, after 30 days exposure to physiological buffer at 37 °C. Transgene expression in endothelial and smooth muscles cells transduced with substrate immobilized adenovirus resulted in significantly different expression profiles for each individual cross-linker. Furthermore, immobilization of adenoviral vectors effectively extended their transduction effectiveness beyond the initial phase of release. Transgene expression driven by adenovirus-tethered stents in rat carotid arteries demonstrated that a faster rate of cross-linker hydrolysis resulted in higher expression levels at day 1, which declined by day 8 after stent implantation, while inversely, slower hydrolysis was associated with increased arterial expression at day 8 in comparison with day 1. In conclusion, adjustable release of transduction-competent adenoviral vectors from metallic surfaces can be achieved, both in vitro and in vivo, through surface immobilization of adenoviral vectors using hydrolyzable cross-linkers with structure-specific release kinetics.
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Affiliation(s)
- Ilia Fishbein
- Division of Cardiology, The Children's Hospital of Philadelphia, Abramson Research Center, and Department of Pediatrics, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA 19104, USA.
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Okochi-Takada E, Hattori N, Tsukamoto T, Miyamoto K, Ando T, Ito S, Yamamura Y, Wakabayashi M, Nobeyama Y, Ushijima T. ANGPTL4 is a secreted tumor suppressor that inhibits angiogenesis. Oncogene 2013; 33:2273-8. [PMID: 23686315 DOI: 10.1038/onc.2013.174] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Revised: 02/14/2013] [Accepted: 03/28/2013] [Indexed: 12/12/2022]
Abstract
Tumor suppressors with extracellular function are likely to have advantages as targets for cancer therapy, but few are known. Here, we focused on angiopoietin-like 4 (ANGPTL4), which is a secreted glycoprotein involved in lipoprotein metabolism and angiogenesis, is methylation-silenced in human cancers, but has unclear roles in cancer development and progression. We found a deletion mutation in its coiled-coil domain at its N-terminal in human gastric cancers, in addition to hypermethylation of the ANGPTL4 promoter CpG islands. Forced expression of wild-type ANGPTL4, but not ANGPTL4 with the deletion, at physiological levels markedly suppressed in vivo tumorigenicity and tumor angiogenesis, indicating that the latter caused the former. Tumor-derived ANGPTL4 suppressed in vitro vascular tube formation and proliferation of human umbilical vascular endothelial cells, partly due to suppression of ERK signaling. These showed that ANGPTL4 is a genetically and epigenetically inactivated secreted tumor suppressor that inhibits tumor angiogenesis.
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Affiliation(s)
- E Okochi-Takada
- Division of Epigenomics, National Cancer Center Research Institute, Tokyo, Japan
| | - N Hattori
- Division of Epigenomics, National Cancer Center Research Institute, Tokyo, Japan
| | - T Tsukamoto
- Oncological Pathology Division, Aichi Cancer Center Research Institute, Nagoya, Japan
| | - K Miyamoto
- Division of Molecular Oncology, National Hospital Organization Kure Medical Center and Chugoku Cancer Center, Kureshi, Japan
| | - T Ando
- 1] Division of Epigenomics, National Cancer Center Research Institute, Tokyo, Japan [2] Third Department of Internal Medicine, University of Toyama, Toyama, Japan
| | - S Ito
- Department of Gastroenterological Surgery, Aichi Cancer Center Central Hospital, Nagoya, Japan
| | - Y Yamamura
- Department of Gastroenterological Surgery, Aichi Cancer Center Central Hospital, Nagoya, Japan
| | - M Wakabayashi
- Division of Epigenomics, National Cancer Center Research Institute, Tokyo, Japan
| | - Y Nobeyama
- 1] Division of Epigenomics, National Cancer Center Research Institute, Tokyo, Japan [2] Department of Dermatology, The Jikei University School of Medicine, Tokyo, Japan
| | - T Ushijima
- Division of Epigenomics, National Cancer Center Research Institute, Tokyo, Japan
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Tang C, Wang G, Wu X, Li Z, Shen Y, Lee JCM, Yu Q. The impact of vascular endothelial growth factor-transfected human endothelial cells on endothelialization and restenosis of stainless steel stents. J Vasc Surg 2010; 53:461-71. [PMID: 21129910 DOI: 10.1016/j.jvs.2010.08.020] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2010] [Revised: 08/06/2010] [Accepted: 08/08/2010] [Indexed: 11/16/2022]
Abstract
OBJECTIVES The purpose of this study was to investigate the effects of gene transfection of endothelial cells with vascular endothelial growth factor (VEGF) on re-endothelialization and inhibiting in-stent restenosis. METHODS Stents coated with human umbilical vein endothelial cells (HUVECs) transfected with VEGF(121) were studied both in vitro and in vivo. In vitro studies were performed using a homemade extracorporeal circulation system. In vivo studies were performed using the rabbit abdominal aorta model. RESULTS In vitro studies confirmed that VEGF(121)-transfected cells adhered on the surface of stainless steel stents with over 90% of the surface covered within 24 hours of seeding. In vivo results showed that VEGF(121)-transfected HUVECs-coated stents were covered with seeding cells after implanting, and almost completely covered with cells after stent implantation for 1 week. In contrast, the non-endothelialized areas of bare metal stents and glutin/poly-L-lysine-coated stents were covered at 4 weeks, and the monolayers of cells were not observed, but fragile neointima was found on the surface. After 12 weeks, VEGF(121)-transfected HUVECs-coated stents significantly reduced the neointima area (0.78 ± 0.03 mm(2)) and stenosis (15.69 ± 2.61%) as compared with those for bare metal stents (neointima area = 2.26 ± 0.67 mm(2); the percentage of stenosis = 47.55 ± 7.10%;P < .01) and glutin/poly-L-lysine-coated stents (neointima area = 1.40 ± 0.37 mm(2); the percentage of stenosis = 31.37 ± 8.18%;P < .01). CONCLUSION In this small animal study, VEGF transfected human endothelial cells, when coated on stainless steel stents, reduce neointimal hyperplasia, promote endothelialization, and reduce in-stent restenosis. Additional studies with this technology are necessary to determine its ultimate utility in improving stents performance.
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Affiliation(s)
- Chaojun Tang
- Key Laboratory of Biorheological Science and Technology, Bioengineering College of Chongqing University, Chongqing, China
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Activation transcription factor-4 and the acute vascular response to injury. J Mol Med (Berl) 2010; 88:545-52. [DOI: 10.1007/s00109-010-0615-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2009] [Revised: 02/14/2010] [Accepted: 02/25/2010] [Indexed: 11/25/2022]
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Bibliography. Current world literature. Imaging and echocardiography. Curr Opin Cardiol 2008; 23:512-5. [PMID: 18670264 DOI: 10.1097/hco.0b013e32830d843f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Fishbein I, Alferiev I, Bakay M, Stachelek SJ, Sobolewski P, Lai M, Choi H, Chen IW, Levy RJ. Local delivery of gene vectors from bare-metal stents by use of a biodegradable synthetic complex inhibits in-stent restenosis in rat carotid arteries. Circulation 2008; 117:2096-103. [PMID: 18413497 DOI: 10.1161/circulationaha.107.746412] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
BACKGROUND Local drug delivery from polymer-coated stents has demonstrated efficacy for preventing in-stent restenosis; however, both the inflammatory effects of polymer coatings and concerns about late outcomes of drug-eluting stent use indicate the need to investigate innovative approaches, such as combining localized gene therapy with stent angioplasty. Thus, we investigated the hypothesis that adenoviral vectors (Ad) could be delivered from the bare-metal surfaces of stents with a synthetic complex for reversible vector binding. METHODS AND RESULTS We synthesized the 3 components of a gene vector binding complex: (1) A polyallylamine bisphosphonate with latent thiol groups (PABT), (2) a polyethyleneimine (PEI) with pyridyldithio groups for amplification of attachment sites [PEI(PDT)], and (3) a bifunctional (amine- and thiol-reactive) cross-linker with a labile ester bond (HL). HL-modified Ad attached to PABT/PEI(PDT)-treated steel surfaces demonstrated both sustained release in vitro over 30 days and localized green fluorescent protein expression in rat arterial smooth muscle cell cultures, which were not sensitive to either inhibition by neutralizing anti-Ad antibodies or inactivation after storage at 37 degrees C. In rat carotid studies, deployment of steel stents configured with PABT/PEI(PDT)/HL-tethered adenoviral vectors demonstrated both site-specific arterial Ad(GFP) expression and adenovirus-luciferase transgene activity per optical imaging. Rat carotid stent delivery of adenovirus encoding inducible nitric oxide synthase resulted in significant inhibition of restenosis. CONCLUSIONS Reversible immobilization of adenovirus vectors on the bare-metal surfaces of endovascular stents via a synthetic complex represents an efficient, tunable method for sustained release of gene vectors to the vasculature.
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Affiliation(s)
- Ilia Fishbein
- Division of Cardiology, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
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