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Magnusson M, Larsson P, Lu EX, Bergh N, Carén H, Jern S. Rapid and specific hypomethylation of enhancers in endothelial cells during adaptation to cell culturing. Epigenetics 2016; 11:614-24. [PMID: 27302749 DOI: 10.1080/15592294.2016.1192734] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Epigenetics, including DNA methylation, is one way for a cell to respond to the surrounding environment. Traditionally, DNA methylation has been perceived as a quite stable modification; however, lately, there have been reports of a more dynamic CpG methylation that can be affected by, for example, long-term culturing. We recently reported that methylation in the enhancer of the gene encoding the key fibrinolytic enzyme tissue-type plasminogen activator (t-PA) was rapidly erased during cell culturing. In the present study we used sub-culturing of human umbilical vein endothelial cells (HUVECs) as a model of environmental challenge to examine how fast genome-wide methylation changes can arise. To assess genome-wide DNA methylation, the Infinium HumanMethylation450 BeadChip was used on primary, passage 0, and passage 4 HUVECs. Almost 2% of the analyzed sites changed methylation status to passage 4, predominantly displaying hypomethylation. Sites annotated as enhancers were overrepresented among the differentially methylated sites (DMSs). We further showed that half of the corresponding genes concomitantly altered their expression, most of them increasing in expression. Interestingly, the stroke-related gene HDAC9 increased its expression several hundredfold. This study reveals a rapid hypomethylation of CpG sites in enhancer elements during the early stages of cell culturing. As many methods for methylation analysis are biased toward CpG rich promoter regions, we suggest that such methods may not always be appropriate for the study of methylation dynamics. In addition, we found that significant changes in expression arose in genes with enhancer DMSs. HDAC9 displayed the most prominent increase in expression, indicating, for the first time, that dynamic enhancer methylation may be central in regulating this important stroke-associated gene.
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Affiliation(s)
- Mia Magnusson
- a Wallenberg Laboratory, Department of Molecular and Clinical Medicine , Institute of Medicine, Sahlgrenska Academy, University of Gothenburg , Gothenburg , Sweden
| | - Pia Larsson
- a Wallenberg Laboratory, Department of Molecular and Clinical Medicine , Institute of Medicine, Sahlgrenska Academy, University of Gothenburg , Gothenburg , Sweden
| | - Emma Xuchun Lu
- a Wallenberg Laboratory, Department of Molecular and Clinical Medicine , Institute of Medicine, Sahlgrenska Academy, University of Gothenburg , Gothenburg , Sweden
| | - Niklas Bergh
- a Wallenberg Laboratory, Department of Molecular and Clinical Medicine , Institute of Medicine, Sahlgrenska Academy, University of Gothenburg , Gothenburg , Sweden
| | - Helena Carén
- b Sahlgrenska Cancer Center, Department of Pathology , Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg , Gothenburg , Sweden
| | - Sverker Jern
- a Wallenberg Laboratory, Department of Molecular and Clinical Medicine , Institute of Medicine, Sahlgrenska Academy, University of Gothenburg , Gothenburg , Sweden
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Park H, Lee S, Shrestha P, Kim J, Park JA, Ko Y, Ban YH, Park DY, Ha SJ, Koh GY, Hong VS, Mochizuki N, Kim YM, Lee W, Kwon YG. AMIGO2, a novel membrane anchor of PDK1, controls cell survival and angiogenesis via Akt activation. J Cell Biol 2016; 211:619-37. [PMID: 26553931 PMCID: PMC4639856 DOI: 10.1083/jcb.201503113] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
AMIGO2 is a novel scaffold protein that regulates PDK1 membrane localization and Akt activation in endothelial cells, and inhibition of the interaction between PDK1–AMIGO2 results in impaired neovascularization, pathological angiogenesis, and tumor angiogenesis. The phosphoinositide 3-kinase–Akt signaling pathway is essential to many biological processes, including cell proliferation, survival, metabolism, and angiogenesis, under pathophysiological conditions. Although 3-phosphoinositide–dependent kinase 1 (PDK1) is a primary activator of Akt at the plasma membrane, the optimal activation mechanism remains unclear. We report that adhesion molecule with IgG-like domain 2 (AMIGO2) is a novel scaffold protein that regulates PDK1 membrane localization and Akt activation. Loss of AMIGO2 in endothelial cells (ECs) led to apoptosis and inhibition of angiogenesis with Akt inactivation. Amino acid residues 465–474 in AMIGO2 directly bind to the PDK1 pleckstrin homology domain. A synthetic peptide containing the AMIGO2 465–474 residues abrogated the AMIGO2–PDK1 interaction and Akt activation. Moreover, it effectively suppressed pathological angiogenesis in murine tumor and oxygen-induced retinopathy models. These results demonstrate that AMIGO2 is an important regulator of the PDK1–Akt pathway in ECs and suggest that interference of the PDK1–AMIGO2 interaction might be a novel pharmaceutical target for designing an Akt pathway inhibitor.
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Affiliation(s)
- Hyojin Park
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Sungwoon Lee
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Pravesh Shrestha
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Jihye Kim
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Jeong Ae Park
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Yeongrim Ko
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Young Ho Ban
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Dae-Young Park
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - Sang-Jun Ha
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Gou Young Koh
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - Victor Sukbong Hong
- College of Natural Sciences, Keimyung University, Daegu 42601, Republic of Korea
| | - Naoki Mochizuki
- Department of Cell Biology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka 565-8565, Japan
| | - Young-Myeong Kim
- Vascular System Research Center, Kangwon National University, Chuncheon, Kangwon 24341, Republic of Korea
| | - Weontae Lee
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Young-Guen Kwon
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
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Kumari J, Karande AA, Kumar A. Combined Effect of Cryogel Matrix and Temperature-Reversible Soluble-Insoluble Polymer for the Development of in Vitro Human Liver Tissue. ACS APPLIED MATERIALS & INTERFACES 2016; 8:264-277. [PMID: 26654271 DOI: 10.1021/acsami.5b08607] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Hepatic cell culture on a three-dimensional (3D) matrix or as a hepatosphere appears to be a promising in vitro biomimetic system for liver tissue engineering applications. In this study, we have combined the concept of a 3D scaffold and a spheroid culture to develop an in vitro model to engineer liver tissue for drug screening. We have evaluated the potential of poly(ethylene glycol)-alginate-gelatin (PAG) cryogel matrix for in vitro culture of human liver cell lines. The synthesized cryogel matrix has a flow rate of 7 mL/min and water uptake capacity of 94% that enables easy nutrient transportation in the in vitro cell culture. Young's modulus of 2.4 kPa and viscoelastic property determine the soft and elastic nature of synthesized cryogel. Biocompatibility of PAG cryogel was evaluated through MTT assay of HepG2 and Huh-7 cells on matrices. The proliferation and functionality of the liver cells were enhanced by culturing hepatic cells as spheroids (hepatospheres) on the PAG cryogel using temperature-reversible soluble-insoluble polymer, poly(N-isopropylacrylamide) (PNIPAAm). Pore size of the cryogel above 100 μm modulated spheroid size that can prevent hypoxia condition within the spheroid culture. Both the hepatic cells have shown a significant difference (P < 0.05) in terms of cell number and functionality when cultured with PNIPAAm. After 10 days of culture using 0.05% PNIPAAm, the cell number increased by 11- and 7-fold in case of HepG2 and Huh-7 cells, respectively. Similarly, after 10 days of hepatic spheroids culture on PAG cryogel, the albumin production, urea secretion, and CYP450 activity were significantly higher in case of culture with PNIPAAm. The developed tissue mass on the PAG cryogel in the presence of PNIPAAm possess polarity, which was confirmed using F-actin staining and by presence of intercellular bile canalicular lumen. The developed cryogel matrix supports liver cells proliferation and functionality and therefore can be used for in vitro and in vivo drug testing.
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Affiliation(s)
- Jyoti Kumari
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur , Kanpur, 208016 UP, India
| | - Anjali A Karande
- Department of Biochemistry, Indian Institute of Sciences , Bangalore 560012, India
| | - Ashok Kumar
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur , Kanpur, 208016 UP, India
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Yu W, Jiang YY, Sun TW, Qi C, Zhao H, Chen F, Shi Z, Zhu YJ, Chen D, He Y. Design of a novel wound dressing consisting of alginate hydrogel and simvastatin-incorporated mesoporous hydroxyapatite microspheres for cutaneous wound healing. RSC Adv 2016. [DOI: 10.1039/c6ra20892d] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Wound dressings consisting of alginate hydrogel and simvastatin-incorporated mesoporous hydroxyapatite microspheres stimulated angiogenesis and accelerated cutaneous wound healing.
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Affiliation(s)
- Weilin Yu
- Department of Orthopedics
- Shanghai Jiao Tong University Affiliated Sixth People's Hospital
- Shanghai 200233
- China
| | - Ying-Ying Jiang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- China
| | - Tuan-Wei Sun
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- China
| | - Chao Qi
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- China
| | - Huakun Zhao
- Department of Orthopedics
- Shanghai Jiao Tong University Affiliated Sixth People's Hospital
- Shanghai 200233
- China
| | - Feng Chen
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- China
| | - Zhongmin Shi
- Department of Orthopedics
- Shanghai Jiao Tong University Affiliated Sixth People's Hospital
- Shanghai 200233
- China
| | - Ying-Jie Zhu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- China
| | - Daoyun Chen
- Department of Orthopedics
- Shanghai Jiao Tong University Affiliated Sixth People's Hospital
- Shanghai 200233
- China
| | - Yaohua He
- Department of Orthopedics
- Shanghai Jiao Tong University Affiliated Sixth People's Hospital
- Shanghai 200233
- China
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ENDOXY - Development of a Biomimetic Oxygenator-Test-Device. PLoS One 2015; 10:e0142961. [PMID: 26682907 PMCID: PMC4684320 DOI: 10.1371/journal.pone.0142961] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2013] [Accepted: 10/29/2015] [Indexed: 12/03/2022] Open
Abstract
Objective This study focusses on the development of a biomimetic oxygenator test device. Due to limited biocompatibility, current oxygenators do not allow mid- to long-term therapy. Tissue engineering uses autologous cell sources to overcome the immunogenic barriers of biomaterials. Surface coating with endothelial cells might improve hemocompatibility and thus prevent immunogenic reactions of the body. In this study this concept is applied to endothelialise a gas-permeable membrane to develop a biomimetic oxygenator test-device (ENDOXY). Methods ENDOXY—a multifunctional test-system was developed to endothelialise a gas-permeable membrane suitable for cell culture and to test the cell retention under shear stress and to measure gas transfer through it. Results Successful endothelialisation of the membrane was achieved and cells showed characteristic endothelial morphologies. They stained positive for endothelial markers. The number of cells aligned with shear stress and cell retention after blood perfusing experiments was high. Gas transfer is observed via uncoated and endothelialised membranes. Conclusion The study showed promising results with regard to system design, endothelialisation, and cell retention under shear stress conditions. It strongly encourages further research into the system by testing different membrane materials to design a biomimetic membrane surface and pave way for a fully hemocompatible oxygenator.
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Characterization of Adsorbents for Cytokine Removal from Blood in an In Vitro Model. J Immunol Res 2015; 2015:484736. [PMID: 26770992 PMCID: PMC4685123 DOI: 10.1155/2015/484736] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 11/05/2015] [Accepted: 11/10/2015] [Indexed: 12/28/2022] Open
Abstract
INTRODUCTION Cytokines are basic targets that have to be removed effectively in order to improve the patient's health status in treating severe inflammation, sepsis, and septic shock. Although there are different adsorbents commercially available, the success of their clinical use is limited. Here, we tested different adsorbents for their effective removal of cytokines from plasma and the resulting effect on endothelial cell activation. METHODS The three polystyrene divinylbenzene (PS-DVB) based adsorbents Amberchrom CG161c and CG300m and a clinically approved haemoperfusion adsorbent (HAC) were studied with regard to cytokine removal in human blood. To induce cytokine release from leucocytes, human blood cells were stimulated with 1 ng/ml LPS for 4 hours. Plasma was separated and adsorption experiments in a dynamic model were performed. The effect of cytokine removal on endothelial cell activation was evaluated using a HUVEC-based cell culture model. The beneficial outcome was assessed by measuring ICAM-1, E-selectin, and secreted cytokines IL-8 and IL-6. Additionally the threshold concentration for HUVEC activation by TNF-α and IL-1β was determined using this cell culture model. RESULTS CG161c showed promising results in removing the investigated cytokines. Due to its pore size the adsorbent efficiently removed the key factor TNF-α, outperforming the commercially available adsorbents. The CG161c treatment reduced cytokine secretion and expression of cell adhesion molecules by HUVEC which underlines the importance of effective removal of TNF-α in inflammatory diseases. CONCLUSION These results confirm the hypothesis that cytokine removal from the blood should approach physiological levels in order to reduce endothelial cell activation.
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A small molecule inhibitor for ATPase activity of Hsp70 and Hsc70 enhances the immune response to protein antigens. Sci Rep 2015; 5:17642. [PMID: 26631605 PMCID: PMC4668564 DOI: 10.1038/srep17642] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 11/03/2015] [Indexed: 02/05/2023] Open
Abstract
The ATPase activities of Hsp70 and Hsc70 are known to be responsible for regulation of various biological processes. However, little is known about the roles of Hsp70 and Hsc70 in modulation of immune responses to antigens. In the present study, we investigated the effect of apoptozole (Az), a small molecule inhibitor of Hsp70 and Hsc70, on immune responses to protein antigens. The results show that mice administered with both protein antigen and Az produce more antibodies than those treated with antigen alone, showing that Az enhances immune responses to administered antigens. Treatment of mice with Az elicits production of antibodies with a high IgG2c/IgG1 ratio and stimulates the release of Th1 and Th2-type cytokines, suggesting that Az activates the Th1 and Th2 immune responses. The observations made in the present study suggest that inhibition of Hsp70 and Hsc70 activities could be a novel strategy designing small molecule-based adjuvants in protein vaccines.
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Ammann KR, DeCook KJ, Tran PL, Merkle VM, Wong PK, Slepian MJ. Collective cell migration of smooth muscle and endothelial cells: impact of injury versus non-injury stimuli. J Biol Eng 2015; 9:19. [PMID: 26473009 PMCID: PMC4606904 DOI: 10.1186/s13036-015-0015-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 09/15/2015] [Indexed: 01/19/2023] Open
Abstract
Background Cell migration is a vital process for growth and repair. In vitro migration assays, utilized to study cell migration, often rely on physical scraping of a cell monolayer to induce cell migration. The physical act of scrape injury results in numerous factors stimulating cell migration – some injury-related, some solely due to gap creation and loss of contact inhibition. Eliminating the effects of cell injury would be useful to examine the relative contribution of injury versus other mechanisms to cell migration. Cell exclusion assays can tease out the effects of injury and have become a new avenue for migration studies. Here, we developed two simple non-injury techniques for cell exclusion: 1) a Pyrex® cylinder - for outward migration of cells and 2) a polydimethylsiloxane (PDMS) insert - for inward migration of cells. Utilizing these assays smooth muscle cells (SMCs) and human umbilical vein endothelial cells (HUVECs) migratory behavior was studied on both polystyrene and gelatin-coated surfaces. Results Differences in migratory behavior could be detected for both smooth muscle cells (SMCs) and endothelial cells (ECs) when utilizing injury versus non-injury assays. SMCs migrated faster than HUVECs when stimulated by injury in the scrape wound assay, with rates of 1.26 % per hour and 1.59 % per hour on polystyrene and gelatin surfaces, respectively. The fastest overall migration took place with HUVECs on a gelatin-coated surface, with the in-growth assay, at a rate of 2.05 % per hour. The slowest migration occurred with the same conditions but on a polystyrene surface at a rate of 0.33 % per hour. Conclusion For SMCs, injury is a dominating factor in migration when compared to the two cell exclusion assays, regardless of the surface tested: polystyrene or gelatin. In contrast, the migrating surface, namely gelatin, was a dominating factor for HUVEC migration, providing an increase in cell migration over the polystyrene surface. Overall, the cell exclusion assays - the in-growth and out-growth assays, provide a means to determine pure migratory behavior of cells in comparison to migration confounded by cell wounding and injury. Electronic supplementary material The online version of this article (doi:10.1186/s13036-015-0015-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Kaitlyn R Ammann
- Biomedical Engineering GIDP, University of Arizona, Tucson, AZ USA
| | - Katrina J DeCook
- Biomedical Engineering GIDP, University of Arizona, Tucson, AZ USA
| | - Phat L Tran
- Sarver Heart Center, College of Medicine, University of Arizona, 1501 N Campbell Ave, Tucson, AZ 85724 USA
| | - Valerie M Merkle
- Biomedical Engineering GIDP, University of Arizona, Tucson, AZ USA
| | - Pak K Wong
- Biomedical Engineering GIDP, University of Arizona, Tucson, AZ USA ; Department of Aerospace and Mechanical Engineering, University of Arizona, Tucson, AZ USA
| | - Marvin J Slepian
- Biomedical Engineering GIDP, University of Arizona, Tucson, AZ USA ; Sarver Heart Center, College of Medicine, University of Arizona, 1501 N Campbell Ave, Tucson, AZ 85724 USA ; Department of Biomedical Engineering, University of Arizona, Tucson, AZ USA
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Lin P, Liu J, Ren M, Ji K, Li L, Zhang B, Gong Y, Yan C. Idebenone protects against oxidized low density lipoprotein induced mitochondrial dysfunction in vascular endothelial cells via GSK3β/β-catenin signalling pathways. Biochem Biophys Res Commun 2015; 465:548-55. [DOI: 10.1016/j.bbrc.2015.08.058] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2015] [Accepted: 08/13/2015] [Indexed: 11/28/2022]
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Meng WCS, Pan Y, Zhao X. Epirubicin-gold nanoparticles suppress hepatocellular carcinoma xenograft growth in nude mice. J Biomed Res 2015; 29:486. [PMID: 26423611 PMCID: PMC4662210 DOI: 10.7555/jbr.29.20140044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Revised: 04/29/2014] [Accepted: 10/11/2014] [Indexed: 11/20/2022] Open
Abstract
We sought to investigate the effects of epirubicin-nanogold compounds (EPI-AuNP) on hepatocellular carcinoma xenograft growth in nude mice. EPI-AuNP was prepared and hepatoma xenograft model was established in nude mice. The mice were then randomly divided into four groups: the control group with injection of saline, the AuNP treatment group, the EPI treatment group and the EPI-AuNP treatment group. After two weeks, the hepatoma weight and volume of the xenografts were assessed. Our transmission electron microscopy revealed that epirubicin-gold nanoparticles caused significantly more structural changes of hepatocellular carcinoma cells HepG2. The tumor weight in the Epi-AuNP treatment group (0.80±0.11g) was significantly lower than that of the control group (2.48±0.15 g), the AuNP treatment group (1.67±0.17 g), and the EPI treatment group (1.39±0.10g) (P<0.01). Furthermore, the tumor volume of mice in the EPI-AuNP treatment group (0.27±0.06 cm³) was significantly smaller than that of the control group (2.23±0.34 cm³), the AuNP treatment group (1.21±0.25 cm³) and the EPI treatment group (0.81±0.11 cm³) (P<0.01). In conclusion, epirubicin-nanogold compounds (EPI-AuNP) have significant inhibitory effects on the growth of hepatocellular carcinoma cells in vivo.
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Affiliation(s)
- William C S Meng
- Department of Surgery, Matilda Internatinal Hospital, Hong Kong, China.
| | - Yunlong Pan
- Department of General Surgery, the First Affiliated Hospital of Jinan University, Guangzhou 510632, China
| | - Xiaoxu Zhao
- Department of General Surgery, the First Affiliated Hospital of Jinan University, Guangzhou 510632, China
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Mohammadi E, Nassiri SM, Rahbarghazi R, Siavashi V, Araghi A. Endothelial juxtaposition of distinct adult stem cells activates angiogenesis signaling molecules in endothelial cells. Cell Tissue Res 2015; 362:597-609. [DOI: 10.1007/s00441-015-2228-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Accepted: 05/22/2015] [Indexed: 01/07/2023]
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Yes-associated protein regulates endothelial cell contact-mediated expression of angiopoietin-2. Nat Commun 2015; 6:6943. [PMID: 25962877 DOI: 10.1038/ncomms7943] [Citation(s) in RCA: 175] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Accepted: 03/16/2015] [Indexed: 02/07/2023] Open
Abstract
Angiogenesis is regulated by the dynamic interaction between endothelial cells (ECs). Hippo-Yes-associated protein (YAP) signalling has emerged as a key pathway that controls organ size and tissue growth by mediating cell contact inhibition. However, the role of YAP in EC has not been defined yet. Here, we show expression of YAP in the developing front of mouse retinal vessels. YAP subcellular localization, phosphorylation and activity are regulated by VE-cadherin-mediated-EC contacts. This VE-cadherin-dependent YAP phosphorylation requires phosphoinositide 3-kinase-Akt activation. We further identify angiopoietin-2 (ANG-2) as a potential transcriptional target of YAP in regulating angiogenic activity of EC in vitro and in vivo. Overexpression of YAP-active form in EC enhances angiogenic sprouting, and this effect is blocked by ANG-2 depletion or soluble Tie-2 treatment. These findings implicate YAP as a critical regulator in angiogenesis and provide new insights into the mechanism coordinating junctional stability and angiogenic activation of ECs.
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Yuan X, Eng GM, Arkonac DE, Chao PHG, Vunjak-Novakovic G. Endothelial cells enhance the migration of bovine meniscus cells. Arthritis Rheumatol 2015; 67:182-92. [PMID: 25307081 DOI: 10.1002/art.38889] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Accepted: 09/16/2014] [Indexed: 01/15/2023]
Abstract
OBJECTIVE To study the interactions between vascular endothelial cells and meniscal fibrochondrocytes from the inner avascular and outer vascular regions of the meniscus and to identify angiogenic factors that enhance cell migration and integrative repair. METHODS Bovine meniscal fibrochondrocytes (bMFCs) from the inner and outer regions of meniscus were cultured for 7 days with or without human umbilical vein endothelial cells (HUVECs) in a micropatterned 3-dimensional hydrogel system for assessment of cell migration. Angiogenic factors secreted by HUVECs were probed for their role in paracrine mechanisms governing bMFC migration and applied to a full-thickness defect model of meniscal repair in explants from the inner and outer meniscal regions over 4 weeks. RESULTS Endothelial cells enhanced the migration of inner and outer bMFCs in the micropatterned system via endothelin 1 (ET-1) signaling. Supplementation with ET-1 significantly enhanced the integration strength of full-thickness defects in the inner and outer explants, as well as cell migration at the macroscale level, as compared to controls without ET-1 treatment. CONCLUSION This study is the first to show that bMFCs from both the avascular and vascular regions of the meniscus respond to the presence of endothelial cells with increased migration. Paracrine signaling by endothelial cells regulates the bMFCs differentially by region, but we identified ET-1 as an angiogenic factor that stimulates the migration of inner and outer cells at the microscale level and the integrative repair of inner and outer explants at the macroscale level. These findings reveal the regional interactions between the vasculature and MFCs, and suggest ET-1 as a potential new treatment for avascular meniscus injuries in order to prevent the development of osteoarthritis.
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Agrawal V, Maharjan S, Kim K, Kim NJ, Son J, Lee K, Choi HJ, Rho SS, Ahn S, Won MH, Ha SJ, Koh GY, Kim YM, Suh YG, Kwon YG. Direct endothelial junction restoration results in significant tumor vascular normalization and metastasis inhibition in mice. Oncotarget 2015; 5:2761-77. [PMID: 24811731 PMCID: PMC4058043 DOI: 10.18632/oncotarget.1942] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Tumor blood vessels are leaky and immature, which causes inadequate blood supply to tumor tissues resulting in hypoxic microenvironment and promotes metastasis. Here we have explored tumor vessel modulating activity of Sac-1004, a recently developed molecule in our lab, which directly potentiates VE-cadherin-mediated endothelial cell junction. Sac-1004 could enhance vascular junction integrity in tumor vessels and thereby inhibit vascular leakage and enhance vascular perfusion. Improved perfusion enabled Sac-1004 to have synergistic anti-tumor effect on cisplatin-mediated apoptosis of tumor cells. Interestingly, characteristics of normalized blood vessels namely reduced hypoxia, improved pericyte coverage and decreased basement membrane thickness were readily observed in tumors treated with Sac-1004. Remarkably, Sac-1004 was also able to inhibit lung and lymph node metastasis in MMTV and B16BL6 tumor models. This was in correlation with a reduction in epithelial-to-mesenchymal transition of tumor cells with considerable diminution in expression of related transcription factors. Moreover, cancer stem cell population dropped substantially in Sac-1004 treated tumor tissues. Taken together, our results showed that direct restoration of vascular junction could be a significant strategy to induce normalization of tumor blood vessels and reduce metastasis.
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Affiliation(s)
- Vijayendra Agrawal
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 120-749, Republic of Korea
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Liang WY, Zhu XY, Zhang JW, Feng XR, Wang YC, Liu ML. Uric acid promotes chemokine and adhesion molecule production in vascular endothelium via nuclear factor-kappa B signaling. Nutr Metab Cardiovasc Dis 2015; 25:187-194. [PMID: 25315669 DOI: 10.1016/j.numecd.2014.08.006] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Revised: 07/22/2014] [Accepted: 08/27/2014] [Indexed: 12/29/2022]
Abstract
BACKGROUND AND AIMS Hyperuricemia is an important risk factor for atherosclerosis, yet the potential mechanisms are not well understood. Migration and adhesion of leukocytes to endothelial cells play key roles in initiation and development of atherosclerosis. We investigated monocyte-endothelial cell interactions and potential signaling pathways under uric acid (UA)-stimulated conditions. METHODS AND RESULTS Primary human umbilical vein endothelial cells (HUVECs) were cultured and exposed to different concentrations of UA for various periods. Experimental hyperuricemia rat models were established. Expression of chemoattractant protein-1 (MCP-1), interleukin 8 (IL-8), vascular cell adhesion molecule-1 (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1) were evaluated. Monocyte-endothelial cell interactions were elucidated by chemotaxis and adhesion assays, and nuclear factor-kappa B (NF-κB) pathway was studied using fluorescent microscopy and electrophoretic mobility shift assay. Results showed that high concentration of UA stimulated generation of chemokines and adhesion molecules in ex vivo and in vivo experiments. Migration and adhesion of human monocytic leukemia cell line THP-1 cells to HUVECs were promoted and activated NF-κB was significantly increased. UA-induced responses were ameliorated by organic anion transporter inhibitor probenecid and NF-κB inhibitor BAY11-7082. It was also observed that human endothelial cells expressed urate transporter-1, which was not regulated by UA. CONCLUSION High concentration of UA exerts unfavorable effects directly on vascular endothelium via the NF-κB signaling pathway, the process of which requires intracellular uptake of UA.
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Affiliation(s)
- W Y Liang
- Department of Geriatrics, Peking University First Hospital, Beijing, China
| | - X Y Zhu
- Department of Cardiology, Peking University Shougang Hospital, Beijing, China
| | - J W Zhang
- Department of Geriatrics, Peking University First Hospital, Beijing, China
| | - X R Feng
- Department of Geriatrics, Peking University First Hospital, Beijing, China
| | - Y C Wang
- Department of Geriatrics, Peking University First Hospital, Beijing, China
| | - M L Liu
- Department of Geriatrics, Peking University First Hospital, Beijing, China.
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66
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Microparticles provide a novel biomarker to predict severe clinical outcomes of dengue virus infection. J Virol 2014; 89:1587-607. [PMID: 25410854 DOI: 10.1128/jvi.02207-14] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
UNLABELLED Shedding of microparticles (MPs) is a consequence of apoptotic cell death and cellular activation. Low levels of circulating MPs in blood help maintain homeostasis, whereas increased MP generation is linked to many pathological conditions. Herein, we investigated the role of MPs in dengue virus (DENV) infection. Infection of various susceptible cells by DENV led to apoptotic death and MP release. These MPs harbored a viral envelope protein and a nonstructural protein 1 (NS1) on their surfaces. Ex vivo analysis of clinical specimens from patients with infections of different degrees of severity at multiple time points revealed that MPs generated from erythrocytes and platelets are two major MP populations in the circulation of DENV-infected patients. Elevated levels of red blood cell-derived MPs (RMPs) directly correlated with DENV disease severity, whereas a significant decrease in platelet-derived MPs was associated with a bleeding tendency. Removal by mononuclear cells of complement-opsonized NS1-anti-NS1 immune complexes bound to erythrocytes via complement receptor type 1 triggered MP shedding in vitro, a process that could explain the increased levels of RMPs in severe dengue. These findings point to the multiple roles of MPs in dengue pathogenesis. They offer a potential novel biomarker candidate capable of differentiating dengue fever from the more serious dengue hemorrhagic fever. IMPORTANCE Dengue is the most important mosquito-transmitted viral disease in the world. No vaccines or specific treatments are available. Rapid diagnosis and immediate treatment are the keys to achieve a positive outcome. Dengue virus (DENV) infection, like some other medical conditions, changes the level and composition of microparticles (MPs), tiny bag-like structures which are normally present at low levels in the blood of healthy individuals. This study investigated how MPs in culture and patients' blood are changed in response to DENV infection. Infection of cells led to programmed cell death and MP release. In patients' blood, the majority of MPs originated from red blood cells and platelets. Decreased platelet-derived MPs were associated with a bleeding tendency, while increased levels of red blood cell-derived MPs (RMPs) correlated with more severe disease. Importantly, the level of RMPs during the early acute phase could serve as a biomarker to identify patients with potentially severe disease who require immediate care.
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67
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Andrographolide inhibits tumor angiogenesis via blocking VEGFA/VEGFR2-MAPKs signaling cascade. Chem Biol Interact 2014; 218:99-106. [DOI: 10.1016/j.cbi.2014.04.020] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Revised: 03/12/2014] [Accepted: 04/28/2014] [Indexed: 01/11/2023]
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68
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Hamid Q, Wang C, Snyder J, Sun W. Surface modification of SU-8 for enhanced cell attachment and proliferation within microfluidic chips. J Biomed Mater Res B Appl Biomater 2014; 103:473-84. [PMID: 24919697 DOI: 10.1002/jbm.b.33223] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Revised: 05/09/2014] [Accepted: 05/17/2014] [Indexed: 11/06/2022]
Abstract
Advances in micro-electro-mechanical systems (MEMS) have led to an increased fabrication of micro-channels. Microfabrication techniques are utilized to develop microfluidic channels for continuous nutrition supply to cells inside a micro-environment. The ability of cells to build tissues and maintain tissue-specific functions depends on the interaction between cells and the extracellular matrix (ECM). SU-8 is a popular photosensitive epoxy-based polymer in MEMS. The patterning of bare SU-8 alone does not provide the appropriate ECM necessary to develop microsystems for biological applications. Manipulating the chemical composition of SU-8 will enhance the biological compatibility, giving the fabricated constructs the appropriate ECM needed to promote a functional tissue array. This article investigates three frequently used surface treatment techniques: (1) plasma treatment, (2) chemical reaction, and (3) deposition treatment to determine which surface treatment is the most beneficial for enhancing the biological properties of SU-8. The investigations presented in this article demonstrated that the plasma, gelatin, and sulfuric acid treatments have a potential to enhance SU-8's surface for biological application. Of course each treatment has their advantages and disadvantages (application dependent). Cell proliferation was studied with the use of the dye Almar Blue, and a micro-plate reader. After 14 days, cell proliferation to plasma treated surfaces was statistically significantly enhanced (p < 0.00001), compared to untreated surfaces. The plasma treated surface is suggested to be the better of the three treatments for biological enhancement followed by gelatin and sulfuric acid treatments, respectively.
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Affiliation(s)
- Qudus Hamid
- Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, Pennsylvania
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69
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Li WZ, Wang J, Long R, Su GH, Bukhory DK, Dai J, Jin N, Huang SY, Jia P, Li T, Fan C, Liu K, Wang Z. Novel antibody against a glutamic acid-rich human fibrinogen-like protein 2-derived peptide near Ser91 inhibits hfgl2 prothrombinase activity. PLoS One 2014; 9:e94551. [PMID: 24728278 PMCID: PMC3984148 DOI: 10.1371/journal.pone.0094551] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2013] [Accepted: 03/17/2014] [Indexed: 12/11/2022] Open
Abstract
Fibrinogen-like protein 2 (fgl2) is highly expressed in microvascular endothelial cells in diseases associated with microcirculatory disturbances and plays a crucial role in microthrombosis. Previous studies have demonstrated that the Ser89 residue is a critical site for mouse fgl2 prothrombinase activity. The aim of this study was to investigate the prothrombinase inhibitory ability of antibodies against an hfgl2-derived peptide. The peptide was termed NPG-12 because it is located at the N-terminus of membrane-bound hfgl2, contains 12 amino acid residues (corresponding to residues 76 to 87), and is rich in Glu. This peptide was selected as an antigenic determinant to produce antibodies in immunized rabbits using the DNAStar and HomoloGene software program. Abundant hfgl2 expression was induced in human umbilical vein endothelial cells through treatment with TNF-α. The generated anti-NPG-12 antibodies specifically recognize fgl2, as determined by ELISA, Western Blot and immunostaining. Moreover, one-stage clotting and thrombin generation tests provide evidence that the antibodies can reduce the hfgl2 prothrombinase activity without affecting the platelet-poor plasma prothrombin time (PT) or the activated partial thromboplastin time (APTT). In addition, the antibodies exerted undetectable influence on the proliferation or activation of bulk T cell populations. In conclusion, the selected peptide sequence NPG-12 may be a critical domain for hfgl2 prothrombinase activity, and the development of inhibitors against this sequence may be promising for research or management of hfgl2-associated microcirculatory disturbances.
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Affiliation(s)
- Wen-Zhu Li
- Department of Cardiology, Institute of Cardiovascular Disease, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jue Wang
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Rui Long
- Department of Geriatrics, Institute of Geriatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Guan-Hua Su
- Department of Cardiology, Institute of Cardiovascular Disease, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dinesh-Kumar Bukhory
- Department of Cardiology, Institute of Cardiovascular Disease, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jing Dai
- Department of Geriatrics, Institute of Geriatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Nan Jin
- Department of Geriatrics, Institute of Geriatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shi-Yuan Huang
- Department of Cardiology, Institute of Cardiovascular Disease, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Peng Jia
- Department of Cardiology, Institute of Cardiovascular Disease, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ting Li
- Department of Cardiology, Institute of Cardiovascular Disease, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chen Fan
- Department of Cardiology, Institute of Cardiovascular Disease, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kun Liu
- Department of Cardiology, Institute of Cardiovascular Disease, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhaohui Wang
- Department of Geriatrics, Institute of Geriatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Siltari A, Viitanen R, Kukkurainen S, Vapaatalo H, Valjakka J. Does the cis/trans configuration of peptide bonds in bioactive tripeptides play a role in ACE-1 enzyme inhibition? Biologics 2014; 8:59-65. [PMID: 24596454 PMCID: PMC3930482 DOI: 10.2147/btt.s54056] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Background The milk casein-derived bioactive tripeptides isoleucine-proline-proline (IPP) and valine-proline-proline (VPP) have been shown to prevent development of hypertension in animal models and to lower blood pressure in moderately hypertensive subjects in most but not all clinical trials. Inhibition of angiotensin-converting enzyme 1 (ACE-1) has been suggested as the explanation for these antihypertensive and beneficial vascular effects. Previously, human umbilical vein endothelial cells (HUVEC) have not been used to test ACE-1 inhibiting properties of casein derived tripeptides in vasculature. Purpose We focused on the cis/trans configurations of the peptide bonds in proline-containing tripeptides in order to discover whether the different structural properties of these peptides influence their activity in ACE-1 inhibition. We hypothesized that the configuration of proline-containing peptides plays a significant role in enzyme inhibition. Methods AutoDock 4.2 docking software was used to predict suitable peptide bond configurations of the tripeptides. Besides modeling studies, we completed ACE-1 activity measurements in vitro using HUVEC cultures. Results In HUVEC cells, both IPP and VPP inhibited ACE-1. Based on molecular docking studies, we propose that in ACE-1 inhibition IPP and VPP share a similar cis configuration between the first aliphatic (isoleucine or valine) and the second (proline) amino acid residues and more different configurations between two proline residues. In vivo experiments are needed to validate the significance of the present findings.
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Affiliation(s)
- Aino Siltari
- Institute of Biomedicine, Pharmacology, University of Helsinki, Finland
| | - Riikka Viitanen
- BioMediTech, Institute of Biomedical Technology, University of Tampere, Finland
| | - Sampo Kukkurainen
- BioMediTech, Institute of Biomedical Technology, University of Tampere, Finland
| | - Heikki Vapaatalo
- Institute of Biomedicine, Pharmacology, University of Helsinki, Finland
| | - Jarkko Valjakka
- BioMediTech, Institute of Biomedical Technology, University of Tampere, Finland
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Fazeli B, Rafatpanah H, Ravari H, Farid Hosseini R, Tavakol Afshari J, Hamidi alamdari D, Valizadeh N, Moheghi N, Rezaee SAR. Sera of patients with thromboangiitis obliterans activated cultured human umbilical vein endothelial cells (HUVECs) and changed their adhesive properties. Int J Rheum Dis 2014; 17:106-12. [DOI: 10.1111/1756-185x.12214] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Bahare Fazeli
- Immunology Department; School of Medicine; Gonabad University of Medical Sciences; Mashhad Iran
| | | | - Hassan Ravari
- Mashhad Vascular and Endovascular Surgery Research Center; Emamreza Hospital; Mashhad Iran
| | | | | | - Dariush Hamidi alamdari
- Biochemistry & Nutrition Research Center; Department of Biochemistry; Faculty of Medicine; Mashhad University of Medical Sciences; Mashhad Iran
| | | | - Nasrin Moheghi
- Immunology Research Center; School of Medicine; Mashhad Iran
| | - S. A. Rahim Rezaee
- Inflammation and Inflammatory Diseases Research Center; School of Medicine; Mashhad University of Medical Sciences; Mashhad Iran
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72
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Xiong SL, Liu X, Yi GH. High-density lipoprotein induces cyclooxygenase-2 expression and prostaglandin I-2 release in endothelial cells through sphingosine kinase-2. Mol Cell Biochem 2014; 389:197-207. [PMID: 24385109 PMCID: PMC3950625 DOI: 10.1007/s11010-013-1941-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Accepted: 12/18/2013] [Indexed: 12/30/2022]
Abstract
High-density lipoprotein (HDL) has a significant cardioprotective effects. HDL induces cyclooxygenase-2 (COX-2) expression and prostacyclin I-2 (PGI-2) release in vascular endothelial cells, which contributes to its anti-atherogenic effects. However, the underlying mechanisms are not fully understood. In the present study, we observed that HDL-stimulated COX-2 expression and PGI-2 production in human umbilical vein endothelial cells (HUVECs) in a time- and dose-dependent manner. These effects triggered by HDL were inhibited by pertussis toxin (PTX), protein kinase C (PKC) inhibitor GF109203X, and ERK inhibitor PD98059, suggesting that Gαi/Gαo-coupled GPCR, PKC, and ERK pathways are involved in HDL-induced COX-2/PGI-2 activation. More importantly, we found that silencing of sphingosine kinase 2 (SphK-2) also blocked HDL-induced COX-2/PGI-2 activation. In addition, HDL-activated SphK-2 phosphorylation accompanied by increased S1P level in the nucleus. Our ChIP data demonstrated that SphK-2 is associated with CREB at the COX-2 promoter region. Collectively, these results indicate that HDL induces COX-2 expression and PGI-2 release in endothelial cells through activation of PKC, ERK1/2, and SphK-2 pathways. These findings implicate a novel mechanism underlying anti-atherothrombotic effects of HDL.
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Affiliation(s)
- Sheng-Lin Xiong
- You Country People's Hospital, Zhuzhou, 412300, Hunan, China,
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Yang B, Zhou L, Peng B, Sun Z, Dai Y, Zheng J. In vitro comparative evaluation of recombinant growth factors for tissue engineering of bladder in patients with neurogenic bladder. J Surg Res 2014; 186:63-72. [DOI: 10.1016/j.jss.2013.07.044] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Revised: 05/19/2013] [Accepted: 07/23/2013] [Indexed: 01/08/2023]
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Lauridsen HM, Pober JS, Gonzalez AL. A composite model of the human postcapillary venule for investigation of microvascular leukocyte recruitment. FASEB J 2013; 28:1166-80. [PMID: 24297702 DOI: 10.1096/fj.13-240986] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Neutrophil extravasation occurs across postcapillary venules, structures composed of endothelial cells (ECs), pericytes (PCs), and basement membrane (BM). We constructed composite models of the human postcapillary venule, combining ECs with PCs or PC-deposited BM, to better study this process. Quiescent and tumor necrosis factor α (TNF-α)-activated composites demonstrated in situ-like expression of cadherins, E-selectin, intercellular adhesion molecule 1 (ICAM-1), vascular cell adhesion molecule 1 (VCAM-1), platelet-endothelial cell adhesion molecule 1 (PECAM-1), CD99, and interleukin 8 (IL-8). After TNF-α activation, the ECs supported greater neutrophil adhesion (66.1 vs. 23.7% of input cells) and transmigration (35.1 vs. 7.20% of input cells) than did the PCs, but the composites behaved comparably (no significant difference) to ECs in both assays. TNF-α-activated EC-conditioned medium (CM) increased transmigration across the PCs, whereas TNF-α-activated PC-CM decreased transmigration across the ECs, and culturing on PC-derived BM decreased both adhesion to and transmigration across the ECs. Anti-very late antigen 4 (VLA-4; on neutrophils) inhibited adhesion to TNF-α-activated composites, but not to ECs alone. Anti-CD99 (expressed on all 3 cell types) inhibited transmigration across the composites (14.5% of control) more than across the ECs (39.0% of control), and venular shear stress reduced transmigration across the ECs (17.3% of static) more than across the composites (36.7% of static). These results provide proof of concept that our composite human EC/PC/BM venular construct can reveal new interactions in the inflammatory cascade.
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Affiliation(s)
- Holly M Lauridsen
- 1Malone Engineering Center 314, Yale University, 55 Prospect Street, New Haven, CT 06520, USA.
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Perelygina L, Zheng Q, Metcalfe M, Icenogle J. Persistent infection of human fetal endothelial cells with rubella virus. PLoS One 2013; 8:e73014. [PMID: 23940821 PMCID: PMC3734309 DOI: 10.1371/journal.pone.0073014] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Accepted: 07/16/2013] [Indexed: 12/20/2022] Open
Abstract
Cardiovascular abnormalities are the leading cause of neonatal death among patients with congenital rubella syndrome (CRS). Although persistence of rubella virus (RV) in fetal endothelium has been repeatedly suggested as a possible cause of cardiovascular birth defects, evidence of the permissiveness of fetal endothelial cells to RV is lacking. In this study we evaluated the ability of RV to infect and persist in primary fetal endothelial cells derived from human umbilical vein (HUVEC). We found that wild type (wt) low passage clinical RV productively infected HUVEC cultures without producing cytopathology or ultrastructural changes. RV did not inhibit host cell protein synthesis, cell proliferation, or interfere with the cell cycle. Persistently infected cultures were easily established at low and high multiplicities of infection (MOI) with both laboratory and wt clinical RV strains. However, synchronous infections of entire HUVEC monolayers were only observed with clinical RV strains. The release of infectious virions into media remained at consistently high levels for several subcultures of infected HUVEC. The results indicate that macrovascular fetal endothelial cells are highly permissive to RV and allow slow persistent RV replication. The findings provide more evidence for the suggestion that vascular pathologies in CRS are triggered by persistent rubella virus infection of the endothelium.
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Affiliation(s)
- Ludmila Perelygina
- Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Qi Zheng
- Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Maureen Metcalfe
- Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Joseph Icenogle
- Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
- * E-mail:
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Han J, Gerstenhaber JA, Lazarovici P, Lelkes PI. Tissue Factor Activity and ECM-Related Gene Expression in Human Aortic Endothelial Cells Grown on Electrospun Biohybrid Scaffolds. Biomacromolecules 2013; 14:1338-48. [DOI: 10.1021/bm400450m] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Jingjia Han
- School
of Biomedical
Engineering, Science and Health Systems, Drexel University, Philadelphia, Pennsylvania 19104,
United States
| | - Jonathan A. Gerstenhaber
- School
of Biomedical
Engineering, Science and Health Systems, Drexel University, Philadelphia, Pennsylvania 19104,
United States
- Department of Bioengineering, College of Engineering, Temple University, Philadelphia, Pennsylvania 19122,
United States
| | - Philip Lazarovici
- School
of Biomedical
Engineering, Science and Health Systems, Drexel University, Philadelphia, Pennsylvania 19104,
United States
- School of Pharmacy
Institute for Drug Research, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 91120,
Israel
| | - Peter I. Lelkes
- School
of Biomedical
Engineering, Science and Health Systems, Drexel University, Philadelphia, Pennsylvania 19104,
United States
- Department of Bioengineering, College of Engineering, Temple University, Philadelphia, Pennsylvania 19122,
United States
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Topping V, Romero R, Than NG, Tarca AL, Xu Z, Kim SY, Wang B, Yeo L, Kim CJ, Hassan SS, Kim JS. Interleukin-33 in the human placenta. J Matern Fetal Neonatal Med 2013; 26:327-38. [PMID: 23039129 PMCID: PMC3563729 DOI: 10.3109/14767058.2012.735724] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVE Interleukin-33 (IL-33) is the newest member of the IL-1 cytokine family, a group of key regulators of inflammation. The purpose of this study was to determine whether IL-33 is expressed in the human placenta and to investigate its expression in the context of acute and chronic chorioamnionitis. METHODS Placental tissues were obtained from five groups of patients: 1) normal pregnancy at term without labor (n = 10); 2) normal pregnancy at term in labor (n = 10); 3) preterm labor without inflammation (n = 10); 4) preterm labor with acute chorioamnionitis and funisitis (n = 10); and 5) preterm labor with chronic chorioamnionitis (n = 10). Immunostaining was performed to determine IL-33 protein expression patterns in the placental disk, chorioamniotic membranes, and umbilical cord. mRNA expression of IL-33 and its receptor IL1RL1 (ST2) was measured in primary amnion epithelial and mesenchymal cells (AECs and AMCs, n = 4) and human umbilical vein endothelial cells (HUVECs, n = 4) treated with IL-1β (1 and 10 ng/ml) and CXCL10 (0.5 and 1 or 5 ng/ml). RESULTS 1) Nuclear IL-33 expression was found in endothelial and smooth muscle cells in the placenta, chorioamniotic membranes, and umbilical cord; 2) IL-33 was detected in the nucleus of CD14+ macrophages in the chorioamniotic membranes, chorionic plate, and umbilical cord, and in the cytoplasm of myofibroblasts in the Wharton's jelly; 3) acute (but not chronic) chorioamnionitis was associated with the presence of IL-33+ macrophages in the chorioamniotic membranes and umbilical cord; 4) expression of IL-33 or IL1RL1 (ST2) mRNA in AECs was undetectable; 5) IL-33 mRNA expression increased in AMCs and HUVECs after IL-1β treatment but did not change with CXCL10 treatment; and 6) IL1RL1 (ST2) expression decreased in AMCs and increased in HUVECs after IL-1β but not CXCL10 treatment. CONCLUSIONS IL-33 is expressed in the nucleus of placental endothelial cells, CD14+ macrophages, and myofibroblasts in the Wharton's jelly. IL-1β can induce the expression of IL-33 and its receptor. Protein expression of IL-33 is detectable in macrophages of the chorioamniotic membranes in acute (but not chronic) chorioamnionitis.
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Affiliation(s)
- Vanessa Topping
- Perinatology Research Branch, NICHD NIH DHHS, Bethesda, MD, and Detroit, MI, USA
| | - Roberto Romero
- Perinatology Research Branch, NICHD NIH DHHS, Bethesda, MD, and Detroit, MI, USA
| | - Nandor Gabor Than
- Perinatology Research Branch, NICHD NIH DHHS, Bethesda, MD, and Detroit, MI, USA
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Adi L. Tarca
- Perinatology Research Branch, NICHD NIH DHHS, Bethesda, MD, and Detroit, MI, USA
- Department of Computer Science, Wayne State University, Detroit, MI, USA
| | - Zhonghui Xu
- Perinatology Research Branch, NICHD NIH DHHS, Bethesda, MD, and Detroit, MI, USA
| | - Sun Young Kim
- Perinatology Research Branch, NICHD NIH DHHS, Bethesda, MD, and Detroit, MI, USA
| | - Bing Wang
- Perinatology Research Branch, NICHD NIH DHHS, Bethesda, MD, and Detroit, MI, USA
| | - Lami Yeo
- Perinatology Research Branch, NICHD NIH DHHS, Bethesda, MD, and Detroit, MI, USA
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Chong Jai Kim
- Perinatology Research Branch, NICHD NIH DHHS, Bethesda, MD, and Detroit, MI, USA
- Department of Pathology, Wayne State University School of Medicine, Detroit, MI, USA
- Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Sonia S. Hassan
- Perinatology Research Branch, NICHD NIH DHHS, Bethesda, MD, and Detroit, MI, USA
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Jung-Sun Kim
- Perinatology Research Branch, NICHD NIH DHHS, Bethesda, MD, and Detroit, MI, USA
- Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Xu S, Chen G, Chen C, Sun C, Zhang D, Murbach M, Kuster N, Zeng Q, Xu Z. Cell type-dependent induction of DNA damage by 1800 MHz radiofrequency electromagnetic fields does not result in significant cellular dysfunctions. PLoS One 2013; 8:e54906. [PMID: 23355902 PMCID: PMC3552808 DOI: 10.1371/journal.pone.0054906] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2012] [Accepted: 12/18/2012] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Although IARC clarifies radiofrequency electromagnetic fields (RF-EMF) as possible human carcinogen, the debate on its health impact continues due to the inconsistent results. Genotoxic effect has been considered as a golden standard to determine if an environmental factor is a carcinogen, but the currently available data for RF-EMF remain controversial. As an environmental stimulus, the effect of RF-EMF on cellular DNA may be subtle. Therefore, more sensitive method and systematic research strategy are warranted to evaluate its genotoxicity. OBJECTIVES To determine whether RF-EMF does induce DNA damage and if the effect is cell-type dependent by adopting a more sensitive method γH2AX foci formation; and to investigate the biological consequences if RF-EMF does increase γH2AX foci formation. METHODS Six different types of cells were intermittently exposed to GSM 1800 MHz RF-EMF at a specific absorption rate of 3.0 W/kg for 1 h or 24 h, then subjected to immunostaining with anti-γH2AX antibody. The biological consequences in γH2AX-elevated cell type were further explored with comet and TUNEL assays, flow cytometry, and cell growth assay. RESULTS Exposure to RF-EMF for 24 h significantly induced γH2AX foci formation in Chinese hamster lung cells and Human skin fibroblasts (HSFs), but not the other cells. However, RF-EMF-elevated γH2AX foci formation in HSF cells did not result in detectable DNA fragmentation, sustainable cell cycle arrest, cell proliferation or viability change. RF-EMF exposure slightly but not significantly increased the cellular ROS level. CONCLUSIONS RF-EMF induces DNA damage in a cell type-dependent manner, but the elevated γH2AX foci formation in HSF cells does not result in significant cellular dysfunctions.
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Affiliation(s)
- Shanshan Xu
- Bioelectromagnetics Laboratory, Zhejiang University School of Medicine, Hangzhou, China
| | - Guangdi Chen
- Bioelectromagnetics Laboratory, Zhejiang University School of Medicine, Hangzhou, China
| | - Chunjing Chen
- Bioelectromagnetics Laboratory, Zhejiang University School of Medicine, Hangzhou, China
| | - Chuan Sun
- Bioelectromagnetics Laboratory, Zhejiang University School of Medicine, Hangzhou, China
| | - Danying Zhang
- Institute of Occupational Health Assessment, Guangdong Prevention and Treatment Center for Occupational Disease, Guangzhou, China
| | - Manuel Murbach
- Foundation for Research on Information Technologies in Society, Swiss Federal Institute of Technology, Zurich, Switzerland
| | - Niels Kuster
- Foundation for Research on Information Technologies in Society, Swiss Federal Institute of Technology, Zurich, Switzerland
| | - Qunli Zeng
- Bioelectromagnetics Laboratory, Zhejiang University School of Medicine, Hangzhou, China
- * E-mail: (ZX); (QZ)
| | - Zhengping Xu
- Bioelectromagnetics Laboratory, Zhejiang University School of Medicine, Hangzhou, China
- * E-mail: (ZX); (QZ)
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79
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Zhang J, Ye J, Ma D, Liu N, Wu H, Yu S, Sun X, Tse W, Ji C. Cross-talk between leukemic and endothelial cells promotes angiogenesis by VEGF activation of the Notch/Dll4 pathway. Carcinogenesis 2012; 34:667-77. [PMID: 23239744 DOI: 10.1093/carcin/bgs386] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Angiogenesis is suggested to be important for leukemogenesis and chemosensitivity in acute myeloid leukemia (AML). The vascular endothelial growth factor (VEGF) and Notch/Dll4 pathways have been identified as critical in the regulation of embryonic vascular development and tumor angiogenesis. However, the potential role of the Notch/Dll4 pathway in leukemia-endothelium cross-talk and its functional link with VEGF remains obscure. This study assessed the expression of VEGF and Notch/Dll4 pathway molecules in primary AML and investigated their biological function in the coculture of endothelial cells with AML cells. The results demonstrated that bone marrow vascularity in the newly diagnosed AML patients was increased and correlated with high VEGF and Dll4 expression. Patients with untreated AML expressed higher levels of VEGFR2, Notch1, Dll4 and Hes1 than healthy controls. Moreover, the activation of the Notch/Dll4 pathway is associated with poor prognosis in AML. In addition, AML cells were shown to increase endothelial cell proliferation in Transwell coculture. This was associated with concomitant activation of the Notch/Dll4 pathway and upregulation of its downstream genes, such as matrix metalloproteinases, resulting in the enhancement of endothelial cell migration and tube formation. Our study also showed that upregulation of Dll4 expression in AML cells by cDNA transfection suppressed VEGF-induced endothelial cell proliferation and angiogenesis in direct contact coculture. These results elucidate a novel mechanism by which the interplay between AML and endothelial cells promotes angiogenesis through the Notch/Dll4 pathway. Modulation of this pathway may, therefore, hold promise as a novel antiangiogenic strategy for the treatment of AML.
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Affiliation(s)
- Jingru Zhang
- Department of Hematology, Qilu Hospital, Shandong University, Jinan 250012, China
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80
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Pancreatic adenocarcinoma upregulated factor, a novel endothelial activator, promotes angiogenesis and vascular permeability. Oncogene 2012; 32:3638-47. [DOI: 10.1038/onc.2012.366] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Revised: 06/12/2012] [Accepted: 06/30/2012] [Indexed: 12/20/2022]
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81
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Wang H, Cai D, Li K, Xu H, Yang L, Zhu N. Effects of different calcium, magnesium, and zinc concentrations supplemented on hepatopancreatic cell proliferation of kuruma prawn, Penaeus japonicus. Biol Trace Elem Res 2012; 148:198-202. [PMID: 22426817 DOI: 10.1007/s12011-012-9366-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2011] [Accepted: 02/17/2012] [Indexed: 10/28/2022]
Abstract
The effects of different calcium (Ca(2+)), magnesium (Mg(2+)), and zinc (Zn(2+)) concentrations supplemented on hepatopancreatic cell proliferation of kuruma prawn, Penaeus japonicus was studied. The culture system consists of medium 199 (M 199) supplemented with 0.060 mol/L NaCl, 1.011 g/L glucose, 1,000 UI/ml penicillin, 1,000 μg/ml treptomycin, heat inactivated fetal calf serum (FCS) 20% for primary cell culture and 10% for subculture. The RNA/DNA ratio of the cell cultures was measured. The results show that the cell division of hepatopancreatic cells of P. japonicus was enhanced by the optimal concentration of inorganic salt (Ca(2+), 1.0 g/L; Mg(2+), 5.0 g/L; Zn(2+), 80 μg/L). The hepatopancreatic cell culture system and improved culture conditions described here will be very useful for in vitro experiments to study viruses responsible for infections in shrimp leading to tremendous economic losses.
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Affiliation(s)
- Hongwei Wang
- South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou, People's Republic of China
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82
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Rozema E, Popescu R, Sonderegger H, Huck CW, Winkler J, Krupitza G, Urban E, Kopp B. Characterization of glucocerebrosides and the active metabolite 4,8-sphingadienine from Arisaema amurense and Pinellia ternata by NMR and CD spectroscopy and ESI-MS/CID-MS. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:7204-7210. [PMID: 22769731 DOI: 10.1021/jf302085u] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Sphingolipid metabolites regulate cellular processes such as cell proliferation, differentiation, and apoptosis. In this study, glucocerebrosides (GluCer) from rhizomes of Arisaema amurense and Pinellia ternata were fully characterized using 1- and 2-dimensional nuclear magnetic spin resonance (NMR) and circular dichroism (CD) spectroscopy and tandem collision-induced dissociation mass spectrometry (ESI-MS/CID-MS). Three new acylated and seven known GluCer were elucidated with 4,8-sphingadienine (4,8-SD, d18:2) as backbone. 4,8-SD is a metabolite after enzymatical hydrolysis of GluCer in the gut lumen. In this study, 4,8-SD was hydrolyzed from GluCer and chromatographically purified on silica gel. In contrast to the GluCer, 4,8-SD showed cytotoxic effects in the WST-1 assay. GluCer with 4,8-SD as sphingoid backbone are present in plants consumed as food, such as spinach, soy, and eggplant.
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Affiliation(s)
- Evelien Rozema
- Department of Pharmacognosy, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
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83
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Shen K, Ji L, Gong C, Ma Y, Yang L, Fan Y, Hou M, Wang Z. Notoginsenoside Ft1 promotes angiogenesis via HIF-1α mediated VEGF secretion and the regulation of PI3K/AKT and Raf/MEK/ERK signaling pathways. Biochem Pharmacol 2012; 84:784-92. [PMID: 22771629 DOI: 10.1016/j.bcp.2012.05.024] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Revised: 05/17/2012] [Accepted: 05/21/2012] [Indexed: 02/02/2023]
Abstract
Notoginsenoside Ft1 (Ft1) is a saponin isolated from Panax notoginseng, which has been used traditionally for the treatment of trauma injuries in East Asia. Here we show that Ft1 is a novel stimulator of angiogenesis. The results show that Ft1 induces proliferation, migration, and tube formation in cultured human umbilical vein endothelial cells (HUVECs). Ft1 increases translocalization of hypoxia-inducible factor-1α (HIF-1α) from cytoplasm to nuclei, where it binds to the vascular endothelial growth factor (VEGF) promoter, increasing the expression of VEGF mRNA and the subsequent secretion of the growth factor. Ft1 induces the activation of PI3K/AKT and Raf/MEK/ERK signaling pathways. Pharmacological inhibition with LY294002, wortmanin or PD98059 reduces Ft1-induced angiogenesis, indicating the important role played by these pathways. In addition, Ft1 induces phosphorylation of the mammalian target of rapamycin (mTOR), and siRNA-mediated mTOR knockdown decreases tube formation, proliferation, transport of HIF-1α into nuclei and VEGF mRNA expression in response to Ft1. Finally, in vivo, Ft1 promotes the formation of blood vessels in Matrigel plug and wound healing in mice. Taken together, the present results reveal that Ft1 stimulates angiogenesis via HIF-1α-mediated VEGF expression, with PI3K/AKT and Raf/MEK/ERK signaling cascades concurrently participating in the process.
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Affiliation(s)
- Kaikai Shen
- The MOE Key Laboratory for Standardization of Chinese Medicines and The SATCM Key Laboratory for New Resources and Quality Evaluation of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201210, China
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84
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Shen K, Ji L, Lu B, Wang Z. c-Jun N-Terminal Kinase Mediated VEGFR2 Sustained Phosphorylation is Critical for VEGFA-Induced Angiogenesis In Vitro and In Vivo. Cell Biochem Biophys 2012; 64:17-27. [DOI: 10.1007/s12013-012-9363-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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85
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Jiménez N, Krouwer VJD, Post JA. A new, rapid and reproducible method to obtain high quality endothelium in vitro. Cytotechnology 2012; 65:1-14. [PMID: 22573289 PMCID: PMC3536875 DOI: 10.1007/s10616-012-9459-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2012] [Accepted: 04/17/2012] [Indexed: 11/16/2022] Open
Abstract
Human umbilical vein endothelial cells (HUVECs) cultured in vitro are a commonly used experimental system. When properly differentiated they acquire the so-called cobblestone phenotype; thereby mimicking an endothelium in vivo that can be used to shed light on multiple endothelial-related processes. In the present paper we report a simple, flexible, fast and reproducible method for an efficient isolation of viable HUVECs. The isolation is performed by sequential short trypsinization steps at room temperature. As umbilical cords are often damaged during labor, it is noteworthy that this new method can be applied even to short pieces of cord with success. In addition, we describe how to culture HUVECs as valid cobblestone cells in vitro on different types of extracellular matrix (basement membrane matrix, fibronectin and gelatin). We also show how to recognize mature cobblestone HUVECs by ordinary phase contrast microscopy. Our HUVEC model is validated as a system that retains important features inherent to the human umbilical vein endothelium in vivo. Phase contrast microscopy, immuno-fluorescence and electron microscopy reveal a tight cobblestone monolayer. Therein cells show Weibel-Palade bodies, caveolae and junctional complexes (comparable to the in vivo situation, as also shown in this study) and can internalize human low density lipoprotein. Isolation and culture of HUVECs as reported in this paper will result in an endothelium-mimicking experimental model convenient for multiple research goals.
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Affiliation(s)
- Nuria Jiménez
- Department of Biomolecular Imaging, Institute of Biomembranes, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands,
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86
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Mojžišová G, Mojžiš J, Pilátová M, Varinská L, Ivanová L, Strojný L, Richnavský J. Antiproliferative and antiangiogenic properties of horse chestnut extract. Phytother Res 2012; 27:159-65. [PMID: 22451355 DOI: 10.1002/ptr.4688] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2011] [Accepted: 03/07/2012] [Indexed: 01/11/2023]
Abstract
This study was designed to examine the in vitro antiproliferative effect of the horse chestnut extract (HCE) on cancer cell lines. Furthermore, we have investigated the in vitro effect of HCE on some angiogenic events by using human umbilical vein endothelial cells. The cell proliferation was evaluated by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay and anchorage-independent growth by colony-forming assay. To understand the growth inhibitory effects, carcinoma cell lines (Jurkat, CEM, HeLa, and MCF-7) were treated with various concentrations of HCE. Incubation of Jurkat, CEM, HeLa, and MCF-7 cancer cells with HCE at 125 µg/mL for 72 h caused 93.7%, 32.3%, 20.4% and 40.4% reduction in cell survival. Colony-forming assay also confirmed growth-inhibitory effects of the compound studied. In HeLa HCE-treated cells, we found a significant increase in cells having sub-G(0) /G(1) DNA content which is considered to be a marker of apoptotic cell death. Apoptosis was also further confirmed by DNA fragmentation analysis.Furthermore, HCE inhibited migration of human umbilical vein endothelial cells as well as decreased secretion of matrix metalloproteinase and vascular endothelial growth factor.In conclusion, the present study has assessed the in vitro antiproliferative/antiangiogenic potential of HCE. These results generate a rationale for in vivo efficacy studies with horse chestnut in preclinical cancer models.
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Affiliation(s)
- Gabriela Mojžišová
- Department of Experimental Medicine, University of P. J. Šafarik, Košice, Slovak Republic.
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87
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Safwan Kam I, . ZHA, . RMA, . AMA, . KFA, . DJA, . MKNH, . MSMA, . ZMS, . KKA. Inhibitory Properties of Tinospora crispa Extracts on TNF-a Induced Inflammation on Human Umbilical Vein Endothelial Cells (HUVECS). ACTA ACUST UNITED AC 2012. [DOI: 10.3923/ijtmed.2012.24.29] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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88
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MULLER SYLVAINE, WEI LEI, LIU YUNGMING, LI KE, WANG XIONG, WANG BAOHA, OUYANG JINGPING, STOLTZ JEANFRANÇOIS. EXPRESSION AND LOCATION OF VASP IN HUMAN ENDOTHELIAL CELLS: EFFECT OF A LAMINAR SHEAR STRESS. J MECH MED BIOL 2011. [DOI: 10.1142/s0219519403000600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Recent elucidation of the primary VASP (vasodilator-simulated phosphoprotein) and identity of VASP binding proteins suggests that VASP is an important component of focal contacts which links signal transduction pathways and elements controlling cell motility. The aim of our study was to evaluate shear-stress-induced changes of VASP expression and localization in ECs. We showed, by western blotting measurements, that the shear stress involve some modifications on the expression of phosphorilated (50 kD) and non phosphorilated (46kD) VASP. Moreover, a fluorescence double-labeling shows the location of VASP on the actin fibers. At rest, ECs showed an array of microfilament bundles of the actin fibers and VASP were along their entire length. After exposure to shear stress, the stress fibers appeared and were oriented along with the flow. There were a thicker expression of VASP than in control, targeted to the ends of stress fibres. This seems to be an adjustment of the cells towards the mechanical stresses. These results suggest that VASP is a potential important component which participates in the regulation of cell actin remodelling induced by shear flow. VASP were involved in the mechano-transduction pathways.
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Affiliation(s)
- SYLVAINE MULLER
- Mécanique et Ingénierie Cellulaire et Tissulaire, LEMTA UMR 7563 CNRS, Faculté de médecine, 54505 Vandoeuvre-les-Nancy, France
| | - LEI WEI
- Mécanique et Ingénierie Cellulaire et Tissulaire, LEMTA UMR 7563 CNRS, Faculté de médecine, 54505 Vandoeuvre-les-Nancy, France
- Departement of pathophysiology, Medical College of Wuhan University, Wuhan, China
| | - YUNGMING LIU
- Mécanique et Ingénierie Cellulaire et Tissulaire, LEMTA UMR 7563 CNRS, Faculté de médecine, 54505 Vandoeuvre-les-Nancy, France
- Departement of pathophysiology, Medical College of Wuhan University, Wuhan, China
| | - KE LI
- Mécanique et Ingénierie Cellulaire et Tissulaire, LEMTA UMR 7563 CNRS, Faculté de médecine, 54505 Vandoeuvre-les-Nancy, France
- Departement of pathophysiology, Medical College of Wuhan University, Wuhan, China
| | - XIONG WANG
- Mécanique et Ingénierie Cellulaire et Tissulaire, LEMTA UMR 7563 CNRS, Faculté de médecine, 54505 Vandoeuvre-les-Nancy, France
| | - BAOHA WANG
- Mécanique et Ingénierie Cellulaire et Tissulaire, LEMTA UMR 7563 CNRS, Faculté de médecine, 54505 Vandoeuvre-les-Nancy, France
- Departement of pathophysiology, Medical College of Wuhan University, Wuhan, China
| | - JINGPING OUYANG
- Departement of pathophysiology, Medical College of Wuhan University, Wuhan, China
| | - JEAN-FRANÇOIS STOLTZ
- Mécanique et Ingénierie Cellulaire et Tissulaire, LEMTA UMR 7563 CNRS, Faculté de médecine, 54505 Vandoeuvre-les-Nancy, France
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89
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Phenotypic and proliferative modulation of human mesenchymal stem cells via crosstalk with endothelial cells. Stem Cell Res 2011; 7:186-97. [DOI: 10.1016/j.scr.2011.05.006] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2010] [Revised: 05/26/2011] [Accepted: 05/31/2011] [Indexed: 12/14/2022] Open
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90
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Liu D, Ji L, Tong X, Pan B, Han JY, Huang Y, Chen YE, Pennathur S, Zhang Y, Zheng L. Human apolipoprotein A-I induces cyclooxygenase-2 expression and prostaglandin I-2 release in endothelial cells through ATP-binding cassette transporter A1. Am J Physiol Cell Physiol 2011; 301:C739-48. [DOI: 10.1152/ajpcell.00055.2011] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
High-density lipoprotein (HDL) can induce cyclooxygenase-2 (COX-2) expression and prostacyclin I-2 (PGI-2) release in endothelial cells to exert multiple antiatherogenic functions. This effect has been attributed mainly to the role of sphingosine-1-phosphate (S1P) integrated in HDL. However, whether apolipoprotein A-I (apoA-I), the major apolipoprotein of HDL, could induce COX-2 expression and PGI-2 release still remains unclear. In the present study, we selectively delipidated HDL and confirmed that apoA-I could facilitate COX-2 expression and PGI-2 production in human umbilical vein endothelial cells (HUVECs). ApoA-I, but not trypsinized apoA-I, induced COX-2 expression in a time- and dose-dependent manner consistent with a key role for apoA-I in this process. Additionally, cotreatment of apoA-I with S1P further enhanced COX-2 expression and PGI-2 production in HUVECs. These effects triggered by apoA-I were not inhibited by pertussis toxin, consistent with SIP receptor independent pathway for apoA-I effect. Moreover, we demonstrated that the activation of p38 mitogen-activated protein kinase (MAPK), extracellular receptor kinase (ERK) 1/2, and JAK2 pathways by apoA-I was involved in the expression of COX-2 and the release of PGI-2 in HUVECs, and these effects were inhibited by their specific inhibitors, respectively. Small interfering RNA experiments showed that ATP binding-cassette transporter A1 (ABCA1) was required for COX-2 expression and PGI-2 release induced by apoA-I. Thus our results indicate that apoA-I induces COX-2 expression and PGI-2 release through ABCA1 and the activation of intracellular p38 MAPK, ERK1/2, as well as JAK2 pathways, and apoA-I can reinforce these effects with S1P in HUVECs. These novel effects of apoA-I could in part mediate antiatherogenic effects of HDL.
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Affiliation(s)
- Donghui Liu
- The Institute of Cardiovascular Sciences and Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Peking University Health Science Center, Haidian District, Beijing
| | - Liang Ji
- The Institute of Cardiovascular Sciences and Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Peking University Health Science Center, Haidian District, Beijing
| | - Xunliang Tong
- Department of Neurology, Peking University First Hospital, Beijing
| | - Bing Pan
- The Institute of Cardiovascular Sciences and Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Peking University Health Science Center, Haidian District, Beijing
| | - Jing-Yan Han
- Department of Integration of Chinese and Western Medicine, School of Basic Medicine Sciences, Peking University, Beijing, China; and
| | - Yining Huang
- Department of Neurology, Peking University First Hospital, Beijing
| | - Y. Eugene Chen
- Department of Medicine, University of Michigan, Ann Arbor, Michigan
| | | | - Youyi Zhang
- The Institute of Cardiovascular Sciences and Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Peking University Health Science Center, Haidian District, Beijing
- The Institute of Vascular Medicine, Peking University Third Hospital, Beijing
| | - Lemin Zheng
- The Institute of Cardiovascular Sciences and Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Peking University Health Science Center, Haidian District, Beijing
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91
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Nolte A, Walker T, Schneider M, Kray O, Avci-Adali M, Ziemer G, Wendel HP. Small-interfering RNA-eluting surfaces as a novel concept for intravascular local gene silencing. Mol Med 2011; 17:1213-22. [PMID: 21792480 DOI: 10.2119/molmed.2011.00143] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2011] [Accepted: 07/21/2011] [Indexed: 12/27/2022] Open
Abstract
New drug-eluting stent (DES) methods have recently been demonstrated to improve outcomes of intravascular interventions. A novel technique is the design of gene-silencing stents that elute specific small-interfering RNAs (siRNAs) for better vascular wall regeneration. Although siRNAs used to alter gene expression have surpassed expectations in in vitro experiments, the functional and local delivery of siRNAs is still the major obstacle for the in vivo application of RNA interference. In this preliminary in vitro study we investigated a surface-immobilized siRNA delivery technique that would be readily adaptable for local intravascular applications in vivo. The transfection potency of gelatin coatings consisting of a specific siRNA complexed with polyethylenimine (PEI) was examined in primary human endothelial cells by flow cytometry and quantitative real-time polymerase chain reaction. Several media conditions, such as the presence or absence of serum during cultivation, were investigated. Furthermore, different siRNA and PEI amounts, as well as nitrogen/phosphate ratios, were tested for their transfection efficiency. Gelatin coatings consisting of PEI and siRNA against an exemplary endothelial adhesion molecule receptor achieved a significant knockdown of around 70%. The transfection efficiency of the coatings was not influenced by the presence of serum. The results of this preliminary study support the expectation that this novel coating may be favorable for local in vivo gene silencing (for example, when immobilized on stents or balloons for percutanous transluminal coronary angioplasty). However, further animal experiments are needed to confirm the translation into clinical practice. This intriguing technology leads the way to more sophisticated and individualized coatings for the post-DES era, toward silencing of genes involved in the pathway of intimal hyperplasia.
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Affiliation(s)
- Andrea Nolte
- Department of Thoracic, Cardiac and Vascular Surgery, Tuebingen University Hospital, Tuebingen, Germany
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92
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Diesel B, Ripoche N, Risch RT, Tierling S, Walter J, Kiemer AK. Inflammation-induced up-regulation of TLR2 expression in human endothelial cells is independent of differential methylation in the TLR2 promoter CpG island. Innate Immun 2011; 18:112-23. [PMID: 21768203 DOI: 10.1177/1753425910394888] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Toll-like receptors play an important role in endothelial inflammation; however, little is known on the mechanisms regulating their expression. Differential promoter DNA methylation is an increasingly recognized mechanism that determines a switch between gene silencing and gene transcription. We hypothesized that epigenetic mechanisms are involved in the regulation of endothelial TLR2 expression because of the localization of the TLR2 promoter on a CpG-island. Resting human umbilical vein endothelial cells (HUVECs) displayed rather low TLR2 mRNA expression, while a strong expression increase occurred under inflammatory conditions. We examined the TLR2 promoter methylation pattern in resting HUVECs and compared it to cells treated either with the inflammatory cytokine TNF-α or the DNA-demethylating agent 5-azacytidine. DNA bisulfite conversion was followed by either genomic sequencing or single nucleotide primer extension (SNuPE) HPLC. Results of both techniques showed a low- or non-methylated TLR2 promoter in resting HUVECs and no alteration of the methylation pattern under inflammatory conditions. Whereas 5-azacytidine significantly increased the mRNA expression of the epigenetically regulated gene H19, TLR2 expression was not affected. Taken together, employing different methodological approaches, our data show no implication of methylation pattern changes in inflammatory induction of TLR2 expression in human endothelial cells.
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Affiliation(s)
- Britta Diesel
- Department of Pharmaceutical Biology, Saarland University, Saarbrücken, Germany
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93
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Gigout A, Ruiz JC, Wertheimer MR, Jolicoeur M, Lerouge S. Nitrogen-Rich Plasma-Polymerized Coatings on PET and PTFE Surfaces Improve Endothelial Cell Attachment and Resistance to Shear Flow. Macromol Biosci 2011; 11:1110-9. [DOI: 10.1002/mabi.201000512] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2010] [Revised: 03/03/2011] [Indexed: 12/15/2022]
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94
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Kaikai S, Yuchen S, Lili J, Zhengtao W. Critical role of c-Jun N-terminal kinase in regulating bFGF-induced angiogenesis in vitro. J Biochem 2011; 150:189-97. [PMID: 21572099 DOI: 10.1093/jb/mvr060] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Angiogenesis, the process of new blood vessels formation, is a critical step for wound healing, tumour growth and metastasis, diabetic retinopathy, psoriasis, etc. The present study was designed to investigate whether c-Jun N-terminal kinase/stress-activated protein kinase (JNK/SAPK) is critical for regulating basic fibroblastic growth factor (bFGF)-induced angiogenesis in human umbilical vein endothelial cells (HUVECs). Our results showed that bFGF-induced HUVECs proliferation, migration and tube formation with a concentration-dependent manner. Further results showed that bFGF induced the phosphorylation of JNK/SAPK at 15 min. Both JNK/SAPK inhibitor SP600125 and JNK/SAPK peptide inhibitor 420116 could inhibit bFGF-induced HUVECs proliferation, migration and tube formation, so did JNK/SAPK-specific siRNA. Moreover, when HUVECs were stimulated with bFGF, upstream signals of JNK/SAPK, SEK1/MKK4 and MKK7 were both activated at 2 min. In summary, our results indicate that JNK/SAPK signal pathway plays an important role in regulating bFGF-mediated angiogenesis in HUVECs, which may therefore be a new therapeutic approach for the treatment of angiogenesis-associated diseases.
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Affiliation(s)
- Shen Kaikai
- The MOE Key Laboratory for Standardization of Chinese Medicines and The SATCM Key Laboratory for New Resources and Quality Evaluation of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201210, China
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95
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Bala K, Ambwani K, Gohil NK. Effect of different mitogens and serum concentration on HUVEC morphology and characteristics: implication on use of higher passage cells. Tissue Cell 2011; 43:216-22. [PMID: 21511321 DOI: 10.1016/j.tice.2011.03.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2010] [Revised: 03/15/2011] [Accepted: 03/18/2011] [Indexed: 10/18/2022]
Abstract
Human umbilical vein endothelial cells (HUVEC) were cultured in two different media, viz. the commonly used M199 containing 20% fetal bovine serum (FBS) and endothelial cell growth factor and a defined media EGM-2 containing 2% FBS along with growth supplements in known concentrations. The purpose of this study was to determine the effect of different media on the growth potential and cell morphology in subsequent passages. We have established that a dual coating of gelatin and human fibronectin extracellular matrix provides optimal cell attachment. Growth rate for primary culture was almost double in defined media. For secondary culture a two fold higher proliferation rate was observed in defined EGM-2 media. Histological studies were done using phase contrast, confocal and scanning electron microscopy which showed that cells cultured in M199 started losing their morphological characteristic from 3rd passage and after 6th passage appeared to come in senescent stage, while in case of defined media there was no change observed in the cells up to 10th passage. A significant difference was found in the expression of soluble intracellular adhesion molecule-1 (sICAM-1) which is an endothelial cell marker on cells cultured in different media. Additionally it was observed that exposure duration to trypsin-EDTA during cell detachment also plays an important role in maintaining cell morphological characteristics. These results show that significant morphological changes appear in higher order passages if cells are grown in routine medium for a long time and therefore may not be suitable for cell signaling experiments.
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Affiliation(s)
- Kanchan Bala
- Centre for Biomedical Engineering, Indian Institute of Technology, Hauz Khas, New Delhi, India
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96
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Park H, Choi HJ, Kim J, Kim M, Rho SS, Hwang D, Kim YM, Kwon YG. Homeobox D1 regulates angiogenic functions of endothelial cells via integrin β1 expression. Biochem Biophys Res Commun 2011; 408:186-92. [PMID: 21501586 DOI: 10.1016/j.bbrc.2011.04.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2011] [Accepted: 04/03/2011] [Indexed: 10/18/2022]
Abstract
Homeobox (HOX) family genes, major transcription factors for embryonic development, have been also implicated in vascular development and angiogenesis, particularly with regulation of genes involved in cell-cell or cell-extracellular matrix (ECM) interactions. However, the cellular and molecular functions of HOXD1 in endothelial cells (ECs) are yet to be explored. We here report that HOXD1 is prominently expressed in human ECs and regulates angiogenic activities. Knockdown of HOXD1 in ECs resulted in significant inhibition of migration and adhesion as well as tube like structure formation. These effects were correlated with the reduced expression of integrin β1 (ITGB1), an important signaling component of angiogenesis. Consistently, ITGB1 promoter activity was decreased by HOXD1 knockdown in ECs. Furthermore, we identified the putative HOXD1-binding sites in the promoter region of ITGB1. Together, these findings suggest that HOXD1 plays a significant role in EC functions by regulating the expression of ITGB1.
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Affiliation(s)
- Hyojin Park
- College of Life Science and Biotechnology, Yonsei University, Seoul, Republic of Korea.
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97
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Li J, Zou Y, Ge J, Zhang D, Guan A, Wu J, Li L. The effects of G-CSF on proliferation of mouse myocardial microvascular endothelial cells. Int J Mol Sci 2011; 12:1306-15. [PMID: 21541060 PMCID: PMC3083707 DOI: 10.3390/ijms12021306] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2010] [Revised: 02/07/2011] [Accepted: 02/18/2011] [Indexed: 11/21/2022] Open
Abstract
This paper explores the effect of granulocyte colony-stimulating factor (G-CSF) on mouse myocardial microvascular endothelial cell (CMECs) proliferation. CMECs were harvested from C57/BL6 mice. CMECs were cultured in medium containing G-CSF (0 ng/mL, 20 ng/mL, 40 ng/mL, 60 ng/mL) for five days. Proliferative activity of CMECs was examined by CCK-8 method. Hypoxia inducible factor-1 (HIF-1) and p53 expression levels was determined from the mRNA obtained by reverse transcription polymerase chain reaction (RT-PCR). Results showed that the purity quotient of the CMECs, which were cultured by the method of modified myocardial tissue explant culture, was higher than 95%. Compared with control untreated cells, the proliferative activity of CMECs and the expression level of HIF-1 mRNA in these cells were enhanced by G-CSF treatment, whereas the expression level of p53 mRNA was markedly reduced. It may be concluded that G-CSF could promote the proliferative activity of CMECs, which might be mediated by upregulation of HIF-1 and downregulation of p53.
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Affiliation(s)
- Jiming Li
- Department of Cardiology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 150 Jimo Road, Shanghai 200120, China; E-Mails: (J.L.); (D.Z.)
| | - Yunzeng Zou
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai 200032, China; E-Mails: (A.G.); (J.W.); (L.L.)
- Institutes of Biomedical Scienses, Fudan University, Shanghai 200032, China
- Authors to whom correspondence should be addressed; E-Mails: (Y.Z.); (J.G.); Tel.: +86-21-54237970; Fax: +86-21-54237969
| | - Junbo Ge
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai 200032, China; E-Mails: (A.G.); (J.W.); (L.L.)
- Institutes of Biomedical Scienses, Fudan University, Shanghai 200032, China
- Authors to whom correspondence should be addressed; E-Mails: (Y.Z.); (J.G.); Tel.: +86-21-54237970; Fax: +86-21-54237969
| | - Daifu Zhang
- Department of Cardiology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 150 Jimo Road, Shanghai 200120, China; E-Mails: (J.L.); (D.Z.)
| | - Aili Guan
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai 200032, China; E-Mails: (A.G.); (J.W.); (L.L.)
- Institutes of Biomedical Scienses, Fudan University, Shanghai 200032, China
| | - Jian Wu
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai 200032, China; E-Mails: (A.G.); (J.W.); (L.L.)
- Institutes of Biomedical Scienses, Fudan University, Shanghai 200032, China
| | - Lei Li
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai 200032, China; E-Mails: (A.G.); (J.W.); (L.L.)
- Institutes of Biomedical Scienses, Fudan University, Shanghai 200032, China
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98
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Chen W, Lu Y, Gao M, Wu J, Wang A, Shi R. Anti-angiogenesis effect of essential oil from Curcuma zedoaria in vitro and in vivo. JOURNAL OF ETHNOPHARMACOLOGY 2011; 133:220-6. [PMID: 20920565 DOI: 10.1016/j.jep.2010.09.031] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2010] [Revised: 09/19/2010] [Accepted: 09/20/2010] [Indexed: 05/24/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Curcuma zedoaria (Berg.) Rosc., a traditional Chinese herb, was used widely but absolutely prohibited for the pregnant in clinic. Based on that there is abundant angiogenesis in endometrium and placenta during gestation period, we hypothesized that some components from it could inhibit angiogenesis and then damaged the supply of oxygen and nutrition to the embryo, which finally led to gestation failure. AIM OF THE STUDY This study was set to demonstrate whether essential oil, major components of Curcuma zedoaria had anti-angiogenic effect. MATERIALS AND METHODS Essential oil of Curcuma zedoaria (EO-CZ) was abstracted by steam distillation extraction. Cell proliferation assay and two angiogenic models, rat aortic ring assay and chick embryo chorioallantoic membrane assay were presented. Furthermore, melanoma growth and experimental lung metastasis assay in mice were performed to evaluate its anti-angiogenesis effect in vivo. Immunohistochemical analysis and enzyme-linked immunosorbent assay (ELISA) were used to respectively detect the expression of CD34 and matrix metalloproteinases (MMPs). RESULTS EO-CZ exhibited anti-proliferative effect on B16BL6 and SMMC-7721 cells, the IC(50), respectively was 41.8 μg/ml and 30.7 μg/ml, and on HUVEC (Human Umbilical Vein Endothelial Cells) cells with IC(50) of far more than 120 μg/ml. Both 20 μg/ml and 40 μg/ml EO-CZ indicated significant suppression on sprouting vessels of aortic ring and formation of microvessels in chick embryo chorioallantoic membrane in vitro. Moreover, solid melanoma grown in left oxter of mice was obviously inhibited after oral intake of 100 and 200 mg/kg of EO-CZ a day for 28 days, and CD34 expression indicating angiogenesis in melanoma reduced significantly compared with control; melanoma metastatic nodules in lung were detected to be inhibited, as well as MMP-2 and MMP-9 expression in serum. CONCLUSIONS Essential oil, a fat-soluble fraction of Curcuma zedoaria, presented anti-angiogenic activity in vitro and in vivo, resulting in suppressing melanoma growth and lung metastasis. And this was associated with down-regulating MMPs.
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Affiliation(s)
- Wenxing Chen
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China.
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99
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Rho SS, Choi HJ, Min JK, Lee HW, Park H, Park H, Kim YM, Kwon YG. Clec14a is specifically expressed in endothelial cells and mediates cell to cell adhesion. Biochem Biophys Res Commun 2011; 404:103-8. [DOI: 10.1016/j.bbrc.2010.11.075] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2010] [Accepted: 11/16/2010] [Indexed: 10/18/2022]
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100
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Involvement of c-Jun N-terminal kinase and extracellular signal-regulated kinase 1/2 in EGF-induced angiogenesis. Cell Biol Int 2010; 34:1213-8. [DOI: 10.1042/cbi20100185] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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