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Wang Y, Wu H, Zhou Z, Maitz MF, Liu K, Zhang B, Yang L, Luo R, Wang Y. A thrombin-triggered self-regulating anticoagulant strategy combined with anti-inflammatory capacity for blood-contacting implants. SCIENCE ADVANCES 2022; 8:eabm3378. [PMID: 35245113 PMCID: PMC8896797 DOI: 10.1126/sciadv.abm3378] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Accepted: 01/13/2022] [Indexed: 05/17/2023]
Abstract
Interrelated coagulation and inflammation are impediments to endothelialization, a prerequisite for the long-term function of cardiovascular materials. Here, we proposed a self-regulating anticoagulant coating strategy combined with anti-inflammatory capacity, which consisted of thrombin-responsive nanogels with anticoagulant and anti-inflammatory components. As an anticoagulant, rivaroxaban was encapsulated in nanogels cross-linked by thrombin-cleavable peptide and released upon the trigger of environmental thrombin, blocking the further coagulation cascade. The superoxide dismutase mimetic Tempol imparted the antioxidant property. Polyphenol epigallocatechin gallate (EGCG), in addition to its anti-inflammatory function in synergy with Tempol, also acted as a weak cross-linker to stabilize the coating. The effectiveness and versatility of this coating were validated using two typical cardiovascular devices as models, biological valves and vascular stents. It was demonstrated that the coating worked as a precise strategy to resist coagulation and inflammation, escorted reendothelialization on the cardiovascular devices, and provided a new perspective for designing endothelium-like functional coatings.
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Affiliation(s)
- Yanan Wang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Haoshuang Wu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Zhongyi Zhou
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Manfred F. Maitz
- Leibniz Institute of Polymer Research Dresden, Max Bergmann Center of Biomaterials Dresden, Dresden 01069, Germany
- Key Laboratory for Advanced Technologies of Materials, Ministry of Education, School of Material Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Kunpeng Liu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Bo Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Li Yang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Rifang Luo
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
- Corresponding author. (R.L.); (Yunbing Wang)
| | - Yunbing Wang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
- Corresponding author. (R.L.); (Yunbing Wang)
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Hong Y, Yang J, Liu W, Gu Z, Li Z, Cheng L, Li C, Duan X. Sustained release of tea polyphenols from a debranched corn starch–xanthan gum complex carrier. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2019.01.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Shin YC, Shin DM, Lee EJ, Lee JH, Kim JE, Song SH, Hwang DY, Lee JJ, Kim B, Lim D, Hyon SH, Lim YJ, Han DW. Hyaluronic Acid/PLGA Core/Shell Fiber Matrices Loaded with EGCG Beneficial to Diabetic Wound Healing. Adv Healthc Mater 2016; 5:3035-3045. [PMID: 27805803 DOI: 10.1002/adhm.201600658] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 09/02/2016] [Indexed: 01/13/2023]
Abstract
During the last few decades, considerable research on diabetic wound healing strategies has been performed, but complete diabetic wound healing remains an unsolved problem, which constitutes an enormous biomedical burden. Herein, hyaluronic acid (HA)/poly(lactic-co-glycolic acid, PLGA) core/shell fiber matrices loaded with epigallocatechin-3-O-gallate (EGCG) (HA/PLGA-E) are fabricated by coaxial electrospinning. HA/PLGA-E core/shell fiber matrices are composed of randomly-oriented sub-micrometer fibers and have a 3D porous network structure. EGCG is uniformly dispersed in the shell and sustainedly released from the matrices in a stepwise manner by controlled diffusion and PLGA degradation over four weeks. EGCG does not adversely affect the thermomechanical properties of HA/PLGA-E matrices. The number of human dermal fibroblasts attached on HA/PLGA-E matrices is appreciably higher than that on HA/PLGA counterparts, while their proliferation is steadily retained on HA/PLGA-E matrices. The wound healing activity of HA/PLGA-E matrices is evaluated in streptozotocin-induced diabetic rats. After two weeks of surgical treatment, the wound areas are significantly reduced by the coverage with HA/PLGA-E matrices resulting from enhanced re-epithelialization/neovascularization and increased collagen deposition, compared with no treatment or HA/PLGA. In conclusion, the HA/PLGA-E matrices can be potentially exploited to craft strategies for the acceleration of diabetic wound healing and skin regeneration.
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Affiliation(s)
- Yong Cheol Shin
- Department of Cogno-Mechatronics Engineering; College of Nanoscience & Nanotechnology; Pusan National University; Busan 46241 Korea
| | - Dong-Myeong Shin
- Research Center for Energy Convergence Technology; Pusan National University; Busan 46241 Korea
| | - Eun Ji Lee
- Department of Cogno-Mechatronics Engineering; College of Nanoscience & Nanotechnology; Pusan National University; Busan 46241 Korea
| | - Jong Ho Lee
- Department of Cogno-Mechatronics Engineering; College of Nanoscience & Nanotechnology; Pusan National University; Busan 46241 Korea
| | - Ji Eun Kim
- Department of Biomaterials Science; College of Natural Resources and Life Science; Life and Industry Convergence Research Institute; Pusan National University; Miryang 50463 Korea
| | - Sung Hwa Song
- Department of Biomaterials Science; College of Natural Resources and Life Science; Life and Industry Convergence Research Institute; Pusan National University; Miryang 50463 Korea
| | - Dae-Youn Hwang
- Department of Biomaterials Science; College of Natural Resources and Life Science; Life and Industry Convergence Research Institute; Pusan National University; Miryang 50463 Korea
| | - Jun Jae Lee
- Department of Prosthodontics; Dental Research Institute; School of Dentistry; Seoul National University; Seoul 03080 Korea
| | - Bongju Kim
- Dental Life Science Research Institute; Seoul National University Dental Hospital; Seoul 03080 Korea
| | - Dohyung Lim
- Department of Mechanical Engineering; Sejong University; Seoul 05006 Korea
| | - Suong-Hyu Hyon
- Center for Fiber and Textile Science; Kyoto Institute of Technology; Kyoto 606-8585 Japan
| | - Young-Jun Lim
- Department of Prosthodontics; Dental Research Institute; School of Dentistry; Seoul National University; Seoul 03080 Korea
| | - Dong-Wook Han
- Department of Cogno-Mechatronics Engineering; College of Nanoscience & Nanotechnology; Pusan National University; Busan 46241 Korea
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Fu G, Yu Z, Chen Y, Chen Y, Tian F, Yang X. Direct Adsorption of Anti-CD34 Antibodies on the Nano-Porous Stent Surface to Enhance Endothelialization. ACTA CARDIOLOGICA SINICA 2016; 32:273-80. [PMID: 27274167 DOI: 10.6515/acs20150813a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND In-stent restenosis following the insertion of conventional drug-eluting stent has become an extremely serious problem due to coating techniques, with polymer matrices used to bind biological ingredients to the stent surface. However, several studies have indicated that new pro-healing technique could prevent stent thrombosis that can be caused by conventional drug-eluting stents. METHODS A novel method of attaching anti-CD34 antibodies directly on the porous surface of a 316L stainless steel bare metal stent was developed in this study, which achieved both high stability of attached anti-CD34 antibodies on the metal stent surface and high antibody activity for stem cell capture. RESULTS The in vitro and in vivo experimental results indicated that the new stent with directly coupled anti-CD34 antibodies can efficiently enhance stent endothelialization. CONCLUSIONS This study indicates that we have developed a unique method of attaching anti-CD34 antibodies directly on the porous surface of a 316L stainless steel bare metal stent, which provides a novel polymer-free approach for developing pro-healing stents.
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Affiliation(s)
- Guowei Fu
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052
| | - Zhanjiang Yu
- State Key Laboratory of Natural and Biomimetic Drugs and Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191
| | - Yongqiang Chen
- Lepu Medical Technology (Beijing) Co., Ltd, Beijing 100022
| | - Yundai Chen
- Department of Cardiology, The General Hospital of the People's Liberation Army, Beijing 100853, P. R. China
| | - Feng Tian
- Department of Cardiology, The General Hospital of the People's Liberation Army, Beijing 100853, P. R. China
| | - Xiaoda Yang
- State Key Laboratory of Natural and Biomimetic Drugs and Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191
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Shu Z, Yu M, Zeng G, Zhang X, Wu L, Tan X. Epigallocatechin-3-gallate inhibits proliferation of human aortic smooth muscle cells via up-regulating expression of mitofusin 2. Eur J Cell Biol 2014; 93:137-44. [PMID: 24880525 DOI: 10.1016/j.ejcb.2014.04.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 04/23/2014] [Accepted: 04/24/2014] [Indexed: 02/05/2023] Open
Abstract
Previous studies have shown that epigallocatechin-3-gallate (EGCG) inhibits the proliferation of vascular smooth muscle cells (VSMCs) via the extracellular-signal-regulated kinase (ERK1/2) and mitogen activated protein kinases (MAPKs) pathway. Mitofusin 2 (Mfn-2) also suppresses VSMC proliferation through Ras-Raf-ERK/MAPK, suggesting a possible link between EGCG, Mfn-2 and ERK/MAPK. However, the effect of EGCG on Mfn-2 remains unknown. In this study, we investigated the role of Mfn-2 in the regulation of VSMC proliferation by EGCG, and assessed the underlying mechanisms. The effects of EGCG on the proliferation of cultured human aortic smooth muscle cells (HASMCs) were observed by 5-ethynl-2-deoxyuridine (EdU) incorporation assay. Mfn-2 gene and protein levels, and Ras, p-c-Raf and p-ERK1/2 protein levels were determined by quantitative real-time polymerase chain reaction and western blotting, respectively. Mfn-2 gene silencing was achieved by RNA interference. EGCG 50 μmol/L profoundly inhibited the proliferation of HASMCs in culture, up-regulated Mfn-2, and down-regulated the expression of p-c-Raf and p-ERK1/2. Furthermore, RNA interference-mediated gene knockdown of Mfn-2 antagonized EGCG-induced anti-proliferation and down-regulation of Ras, p-c-Raf and p-ERK1/2. These results suggest that EGCG inhibits the proliferation of HASMCs in vitro largely via Mfn-2-mediated suppression of the Ras-Raf-ERK/MAPK signaling pathway.
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Affiliation(s)
- Zhouwu Shu
- Department of Cardiology, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong 515041, China; Molecular Biology Laboratory, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Min Yu
- Department of Cardiology, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong 515041, China; Molecular Biology Laboratory, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Guoning Zeng
- Molecular Biology Laboratory, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Xin Zhang
- Molecular Biology Laboratory, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Libiao Wu
- Molecular Biology Laboratory, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Xuerui Tan
- Department of Cardiology, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong 515041, China.
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Ding Y, Yang Z, Bi CWC, Yang M, Zhang J, Xu SL, Lu X, Huang N, Huang P, Leng Y. Modulation of protein adsorption, vascular cell selectivity and platelet adhesion by mussel-inspired surface functionalization. J Mater Chem B 2014; 2:3819-3829. [DOI: 10.1039/c4tb00386a] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The “surface property–protein adsorption–cell behavior” relationship of polydopamine was investigated and the mechanism of polydopamine selectively modulating vascular cell behavior was explored.
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Affiliation(s)
- Yonghui Ding
- Department of Mechanical and Aerospace Engineering
- The Hong Kong University of Science and Technology
- Kowloon, Hong Kong
| | - Zhilu Yang
- Key Laboratory of Advanced Technology of Materials
- School of Material Science and Engineering
- Southwest Jiaotong University
- Chengdu, China
| | - Cathy W. C. Bi
- Division of Life Science
- The Hong Kong University of Science and Technology
- Kowloon, Hong Kong
| | - Meng Yang
- Department of Mechanical and Aerospace Engineering
- The Hong Kong University of Science and Technology
- Kowloon, Hong Kong
| | - Jingcheng Zhang
- Department of Mechanical and Aerospace Engineering
- The Hong Kong University of Science and Technology
- Kowloon, Hong Kong
| | - Sherry Li Xu
- Division of Life Science
- The Hong Kong University of Science and Technology
- Kowloon, Hong Kong
| | - Xiong Lu
- Key Laboratory of Advanced Technology of Materials
- School of Material Science and Engineering
- Southwest Jiaotong University
- Chengdu, China
| | - Nan Huang
- Key Laboratory of Advanced Technology of Materials
- School of Material Science and Engineering
- Southwest Jiaotong University
- Chengdu, China
| | - Pingbo Huang
- Division of Life Science
- The Hong Kong University of Science and Technology
- Kowloon, Hong Kong
- Division of Biomedical Engineering
- The Hong Kong University of Science and Technology
| | - Yang Leng
- Department of Mechanical and Aerospace Engineering
- The Hong Kong University of Science and Technology
- Kowloon, Hong Kong
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Muthusami S, Prabakaran DS, An Z, Yu JR, Park WY. EGCG suppresses Fused Toes Homolog protein through p53 in cervical cancer cells. Mol Biol Rep 2013; 40:5587-96. [PMID: 24065519 DOI: 10.1007/s11033-013-2660-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 09/14/2013] [Indexed: 01/22/2023]
Abstract
The anticarcinogenic actions of epigallocatechin-3-gallate (EGCG), one of the main ingredients of green tea, against various cancer types including cervical cancer are well documented. Studies pertaining to the exact molecular mechanism by which EGCG induces cancer cell growth inhibition needs to be investigated extensively. In the present study, we observed a stupendous dose dependent reduction in the protein expression of Fused Toes Homolog (FTS) after treatment with EGCG at 1, 10, 25 and 50 μM. Further, we were interested in finding out whether the decrease in the protein expression of FTS was due to decreased mRNA synthesis. Real time reverse transcriptase polymerase chain reaction results revealed a similar dose dependent reduction in the FTS mRNA after EGCG treatment. Chromatin immunoprecipitation analysis revealed the interaction between p53 and the promoter region of FTS. A dose dependent increase in this interaction was evidenced at 25 and 50 μM EGCG treatment. p53 silencing increased the expression of FTS and also decreased the reduction in the levels of FTS expression after EGCG treatment. The decrease in the levels of FTS was more significant at 25 and 50 μM and is associated with reduced physical interaction of FTS with Akt, phosphorylation of Akt and survival of HeLa cells. Collectively, these results conclude that EGCG induced anti-proliferative action in the cervical cancer cell involves reduced mRNA expression of FTS through p53.
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Affiliation(s)
- Sridhar Muthusami
- Department of Radiation Oncology, College of Medicine, Chungbuk National University, Cheongju, 361-763, South Korea
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Orozco-Sevilla V, Naftalovich R, Hoffmann T, London D, Czernizer E, Yang C, Dardik A, Dardik H. Epigallocatechin-3-gallate is a potent phytochemical inhibitor of intimal hyperplasia in the wire-injured carotid artery. J Vasc Surg 2013; 58:1360-5. [PMID: 23538007 DOI: 10.1016/j.jvs.2012.11.090] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Revised: 11/16/2012] [Accepted: 11/22/2012] [Indexed: 11/27/2022]
Abstract
OBJECTIVE Epigallocatechin-3-gallate (EGCG), a catechin gallate ester, is the major component of green tea and has been demonstrated to inhibit tumor growth as well as inhibit smooth muscle cell migration. We evaluated the effect of the phytochemicals resveratrol, allicin, sulforaphane (SFN), and EGCG on intimal hyperplasia in the carotid artery injury model. METHODS Intimal hyperplasia was induced in carotid arteries of adult Sprague-Dawley rats with a wire injury. Experimental animals received intraperitoneal injections of one of the four phytochemicals daily beginning 1 day prior to surgery and continued for up to 4 weeks. Control animals were administered saline. Carotid specimens were harvested at 2 weeks and subjected to quantitative image analysis. In addition, EGCG specimens were analyzed for cell proliferation, immunohistochemistry, and Western blot analysis. RESULTS Quantitative image analysis showed significant phytochemical suppression of intimal hyperplasia at 2 and 4 weeks postoperatively with EGCG (62% decrease in intimal area). Significant decreases were also noted at 2 weeks for SFN (56%) and resveratrol (44%), whereas the decrease with allicin (24%) was not significant. Quantification of intimal hyperplasia by intima:media ratio showed similar results. Cell proliferation assay of specimens demonstrated suppression by EGCG. Immunohistochemical staining of EGCG-treated specimens showed extracellular signal-regulated kinase (ERK) suppression but not of the c-jun N-terminal kinase or p38 pathways. Western blot analysis confirmed reduced ERK activation in arteries treated with EGCG. CONCLUSIONS Intraperitoneal injection of the phytochemicals EGCG, SFN, resveratrol, and allicin have suppressive effects on the development of intimal hyperplasia in the carotid artery injury model, with maximal effect due to EGCG. The mechanism of EGCG action may be due to inhibition of ERK activation. EGCG may affect a common pathway underlying either neoplastic cellular growth or vascular smooth muscle cellular proliferation.
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Rossi F, Casalini T, Raffa E, Masi M, Perale G. Bioresorbable Polymer Coated Drug Eluting Stent: A Model Study. Mol Pharm 2012; 9:1898-910. [DOI: 10.1021/mp200573f] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Filippo Rossi
- Department
of Chemistry, Materials and Chemical Engineering
“Giulio Natta”, Politecnico di Milano, Via Mancinelli 7, 20131 Milano, Italy
| | - Tommaso Casalini
- Department
of Chemistry, Materials and Chemical Engineering
“Giulio Natta”, Politecnico di Milano, Via Mancinelli 7, 20131 Milano, Italy
| | - Edoardo Raffa
- Department
of Chemistry, Materials and Chemical Engineering
“Giulio Natta”, Politecnico di Milano, Via Mancinelli 7, 20131 Milano, Italy
| | - Maurizio Masi
- Department
of Chemistry, Materials and Chemical Engineering
“Giulio Natta”, Politecnico di Milano, Via Mancinelli 7, 20131 Milano, Italy
| | - Giuseppe Perale
- Department
of Chemistry, Materials and Chemical Engineering
“Giulio Natta”, Politecnico di Milano, Via Mancinelli 7, 20131 Milano, Italy
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Fu N, Zhou Z, Jones TB, Tan TTY, Wu WD, Lin SX, Chen XD, Chan PPY. Production of monodisperse epigallocatechin gallate (EGCG) microparticles by spray drying for high antioxidant activity retention. Int J Pharm 2011; 413:155-66. [PMID: 21554936 DOI: 10.1016/j.ijpharm.2011.04.056] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2010] [Revised: 04/18/2011] [Accepted: 04/21/2011] [Indexed: 10/18/2022]
Abstract
Epigallocatechin gallate (EGCG) originated from green tea is well-known for its pharmaceutical potential and antiproliferating effect on carcinoma cells. For drug delivery, EGCG in a micro-/nanoparticle form is desirable for their optimized chemopreventive effect. In this study, first time reports that EGCG microparticles produced by low temperature spray drying can maintain high antioxidant activity. A monodisperse droplet generation system was used to realize the production of EGCG microparticles. EGCG microparticles were obtained with narrow size distribution and diameter of 30.24 ± 1.88 μM and 43.39 ± 0.69 μM for pure EGCG and lactose-added EGCG, respectively. The EC50 value (the amount of EGCG necessary to scavenge 50% of free radical in the medium) of spray dried pure EGCG particles obtained from different temperature is in the range of 3.029-3.075 μM compared to untreated EGCG with EC50 value of 3.028 μM. Varying the drying temperatures from 70°C and 130°C showed little detrimental effect on EGCG antioxidant activity. NMR spectrum demonstrated the EGCG did not undergo chemical structural change after spray drying. The major protective mechanism was considered to be: (1) the use of low temperature and (2) the heat loss from water evaporation that kept the particle temperature at low level. With further drier optimization, this monodisperse spray drying technique can be used as an efficient and economic approach to produce EGCG micro-/nanoparticles.
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Affiliation(s)
- Nan Fu
- Department of Chemical Engineering, Monash University, Clayton, Victoria 3800, Australia.
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Han DW, Lee MH, Kwon BJ, Kim HL, Hyon SH, Park JC. Selective inhibitory effect of epigallocatechin-3-gallate on migration of vascular smooth muscle cells. Molecules 2010; 15:8488-500. [PMID: 21102375 PMCID: PMC6259198 DOI: 10.3390/molecules15118488] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2010] [Revised: 11/13/2010] [Accepted: 11/17/2010] [Indexed: 01/03/2023] Open
Abstract
In order to prevent restenosis after angioplasty or stenting, one of the most popular targets is suppression of the abnormal growth and excess migration of vascular smooth muscle cells (VSMCs) with drugs. However, the drugs also adversely affect vascular endothelial cells (VECs), leading to the induction of late thrombosis. We have investigated the effect of epigallocatechin-3-gallate (EGCG) on the proliferation and migration of VECs and VSMCs. Both cells showed dose-dependent decrease of viability in response to EGCG while they have different IC50 values of EGCG (VECs, 150 μM and VSMCs, 1050 μM). Incubating both cells with EGCG resulted in significant reduction in cell proliferation irrespective of cell type. The proliferation of VECs were greater affected than that of VSMCs at the same concentrations of EGCG. EGCG exerted differential migration-inhibitory activity in VECs vs. VSMCs. The migration of VECs was not attenuated by 200 μM EGCG, but that of VSMCs was significantly inhibited at the same concentration of EGCG. It is suggested that that EGCG can be effectively used as an efficient drug for vascular diseases or stents due to its selective activity, completely suppressing the proliferation and migration of VSMCs, but not adversely affecting VECs migration in blood vessels.
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Affiliation(s)
- Dong-Wook Han
- Department of Nanomedical Engineering, College of Nanoscience & Nanotechnology, Pusan National University, Busan 609-735, Korea; E-Mail: (D-W.H.)
| | - Mi Hee Lee
- Brain Korea 21 Project for Medical Science, Cellbiocontrol Laboratory, Department of Medical Engineering, Yonsei University College of Medicine, Seoul 120-752, Korea; E-Mails: (M.H.L.); (B.J.K.); (H.L.K.)
| | - Byeong-Ju Kwon
- Brain Korea 21 Project for Medical Science, Cellbiocontrol Laboratory, Department of Medical Engineering, Yonsei University College of Medicine, Seoul 120-752, Korea; E-Mails: (M.H.L.); (B.J.K.); (H.L.K.)
| | - Hye-Lee Kim
- Brain Korea 21 Project for Medical Science, Cellbiocontrol Laboratory, Department of Medical Engineering, Yonsei University College of Medicine, Seoul 120-752, Korea; E-Mails: (M.H.L.); (B.J.K.); (H.L.K.)
| | - Suong-Hyu Hyon
- Department of Medical Simulation Engineering, Research Center for Nano Medical Engineering, Institute for Frontier Medical Sciences, Kyoto University, Kyoto 606-8507, Japan; E-Mail: (S-H.H.)
| | - Jong-Chul Park
- Brain Korea 21 Project for Medical Science, Cellbiocontrol Laboratory, Department of Medical Engineering, Yonsei University College of Medicine, Seoul 120-752, Korea; E-Mails: (M.H.L.); (B.J.K.); (H.L.K.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +82-2-2228-1917; Fax: +82-2-363-9923
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