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Hunter EJ, Hamaia SW, Kim PSK, Malcor JDM, Farndale RW. The effects of inhibition and siRNA knockdown of collagen-binding integrins on human umbilical vein endothelial cell migration and tube formation. Sci Rep 2022; 12:21601. [PMID: 36517525 PMCID: PMC9751114 DOI: 10.1038/s41598-022-25937-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 12/07/2022] [Indexed: 12/15/2022] Open
Abstract
Blood vessels in the body are lined with endothelial cells which have vital roles in numerous physiological and pathological processes. Collagens are major constituents of the extracellular matrix, and many adherent cells express several collagen-binding adhesion receptors. Here, we study the endothelium-collagen interactions mediated by the collagen-binding integrins, α1β1, α2β1, α10β1 and α11β1 expressed in human umbilical vein endothelial cells (HUVECs). Using qPCR, we found expression of the α10 transcript of the chondrocyte integrin, α10β1, along with the more abundant α2, and low-level expression of α1. The α11 transcript was not detected. Inhibition or siRNA knockdown of the α2-subunit resulted in impaired HUVEC adhesion, spreading and migration on collagen-coated surfaces, whereas inhibition or siRNA knockdown of α1 had no effect on these processes. In tube formation assays, inhibition of either α1 or α2 subunits impaired the network complexity, whereas siRNA knockdown of these integrins had no such effect. Knockdown of α10 had no effect on cell spreading, migration or tube formation in these conditions. Overall, our results indicate that the collagen-binding integrins, α1β1 and α2β1 play a central role in endothelial cell motility and self-organisation.
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Affiliation(s)
- Emma J Hunter
- Department of Biochemistry, University of Cambridge, Downing Site, Cambridge, CB2 1QW, UK
- Stem Cell and Brain Research Institute, Université Lyon 1, INSERM U1208, 18 Avenue Doyen Lépine, 69500, Bron, France
| | - Samir W Hamaia
- Department of Biochemistry, University of Cambridge, Downing Site, Cambridge, CB2 1QW, UK
| | - Peter S-K Kim
- Department of Biochemistry, University of Cambridge, Downing Site, Cambridge, CB2 1QW, UK
| | - Jean-Daniel M Malcor
- Department of Biochemistry, University of Cambridge, Downing Site, Cambridge, CB2 1QW, UK
- Laboratoire de Biologie Tissulaire et Ingénierie Thérapeutique, UMS3444 BioSciences Gerland-Lyon Sud, UMR5305, CNRS/Université Lyon 1, Lyon, France
| | - Richard W Farndale
- Department of Biochemistry, University of Cambridge, Downing Site, Cambridge, CB2 1QW, UK.
- CambCol Laboratories Ltd, 18 Oak Lane, Littleport, Ely, CB6 1QZ, UK.
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Gajjar DU, Vasavada AR, Patel P, Praveen MR, Shah SR. Evaluation of collagen derived antiangiogenic factors and matrix metalloproteinases in anterior lens epithelial cells of pediatric eyes with persistent fetal vasculature. Indian J Ophthalmol 2020; 67:1618-1622. [PMID: 31546493 PMCID: PMC6786169 DOI: 10.4103/ijo.ijo_185_19] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Purpose: To measure levels of collagen-derived antiangiogenic factors (arresten, canstatin, tumstatin, endostatin) and matrix metalloproteinases (MMP-2 and MMP-9) in anterior lens epithelial cells (LECs) and anterior capsules of children with cataract and persistent fetal vasculature (PFV) as cases and cataract without PFV as controls. Methods: Anterior capsules harboring LECs were collected from pediatric cataract patients with (n = 13) and without PFV (n = 13) during surgery. Samples were immediately subjected to RNA extraction and cDNA preparation. Quantitative real time PCR was performed to determine the mRNA levels of antiangiogenic factors and matrix metalloproteinases. GAPDH (Glyceraldehyde 3-Phosphate Dehydrogenase) and β Actin were used as the housekeeping control. The mRNA levels were expressed as a ratio, using the delta-delta method for comparing the relative expression results between controls and cases. The non-parametric Mann-Whitney U test was applied for statistical evaluation. P values < 0.05 were statistically significant. Results: The relative mRNA levels of arresten, canstatin, tumstatin, endostatin, MMP-2 and MMP-9 in cases were 6.20E-03 ± 0.003, 1.49E-01 ± 0.02, 1.70E-01 ± 0.007, 3.20E-03 ± 0.003, 1.11E-03 ± 0.0009 and 3.72E-04 ± 0.0001. The mRNA levels of arresten was 1.6 times lower (P = 0.01) while mRNA levels of MMP-2, tumstatin and canstatin were 4, 2.5, and 2.3 times higher in cases than in controls. No change was observed in mRNA levels of MMP-9 and endostatin (P = 0.82). Conclusion: A significant difference in the levels of arresten, canstatin, tumstatin, and MMP-2 was found in LECs with PFV.
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Ates M, Hosgorler F, Yuksel O, Unsal SK, Guvendi G, Karakilic A, Koc B, Kandis S, Kanit L, Uysal N. Nicotine increased VEGF and MMP2 levels in the rat eye and kidney. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:33517-33523. [PMID: 31578682 DOI: 10.1007/s11356-019-06460-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 09/06/2019] [Indexed: 06/10/2023]
Abstract
Chronic cigarette smoking affects many tissues negatively. Nicotine in tobacco has negative effects on tissues, kidneys, and eyes especially, where microcirculation is vitally important for the survival and functioning. It is known that appropriate vascular endothelial growth factor (VEGF) and (matrix metalloproteinase 2) MMP2 levels are required for suitable vascularity and enough microcirculation. The aim of this study was to investigate the effect of nicotine on VEGF and MMP2 levels in kidney and eyes, where microcirculation is very important for their function. The nicotine was given into drinking water, to male and female rats for 6 weeks. During the first 2 weeks, the nicotine concentration was 10 mg/L, then was given at a fixed dose of 20 mg/L until the end of the experiment. The VEGF and MMP2 levels were increased in kidney tissue of both genders as a result of given nicotine. MMP2 levels were also increased in the eye tissue for both genders similarly. However, VEGF levels increased in the eye tissue with nicotine in males, whereas it did not change in females. The use of nicotine made VEGF and MMP2 levels increase in kidney tissue in both genders of rats. This increase in VEGF was observed only in male eye tissue, not in females. According to our findings, it can be suggested that nicotine has negative effects on microvascular circulation by increasing VEGF and MMP2 levels. In addition, it should be pointed out that estrogen might have protective effects on female eye tissue. Further studies are necessary to understand the complex relationship between the role of nicotine and estrogen on eye and kidney tissues.
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Affiliation(s)
- Mehmet Ates
- College of Vocational School of Health Services, School of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Ferda Hosgorler
- Department of Physiology, School of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Oguz Yuksel
- Department of Sports Medicine, School of Medicine, Dokuz Eylul University, Izmir, Turkey
| | | | - Guven Guvendi
- Department of Physiology, School of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Asli Karakilic
- Department of Physiology, School of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Basar Koc
- Department of Physiology, School of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Sevim Kandis
- Department of Physiology, School of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Lutfiye Kanit
- Department of Physiology, School of Medicine, Ege University, Izmir, Turkey
| | - Nazan Uysal
- College of Vocational School of Health Services, School of Medicine, Dokuz Eylul University, Izmir, Turkey.
- Medical Faculty, Physiology Department, Dokuz Eylul University, Balcova, Izmir, Turkey.
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Boosani CS, Gunasekar P, Agrawal DK. An update on PTEN modulators - a patent review. Expert Opin Ther Pat 2019; 29:881-889. [PMID: 31530116 DOI: 10.1080/13543776.2019.1669562] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Introduction: A multitude of cellular and physiological functions have been attributed to the biological activity of PTEN (Phosphatase and tensin homolog) such as inhibiting angiogenesis, promoting apoptosis, preventing cell proliferation, and maintaining cellular homeostasis. Based on whether cell growth is needed to be initiated or to be inhibited, enhancing PTEN expression or seeking to inhibit it was pursued. Areas covered: Here the authors provide recent updates to their previous publication on 'PTEN modulators: A patent review', and discuss on new specificities that affirm the therapeutic potential of PTEN in promoting neuro-regeneration, stem cell regeneration, autophagy, bone and cartilage regeneration. Also, targeting PTEN appears to be effective in developing new treatment strategies for Parkinson's disease, Alzheimer's disease, macular degeneration, immune disorders, asthma, arthritis, lupus, Crohn's disease, and several cancer types. Expert opinion: PTEN mainly inhibits the PI3k/Akt pathway. However, the PI3k/Akt pathway can be activated by other signaling proteins. Thus, novel treatment strategies that can regulate PTEN alone, or combinational treatment approaches that can induce PTEN and simultaneously affect downstream mediators in the PI3K/Akt pathway, are needed, which were not investigated in detail. Commercial interests associated with molecules that regulate PTEN are discussed here, along with limitations and new possibilities to improve them.
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Affiliation(s)
- Chandra S Boosani
- Department of Translational Research, Western University of Health Sciences , Pomona , CA , USA
| | - Palanikumar Gunasekar
- Department of Clinical & Translational Science, Creighton University School of Medicine , Omaha , NE , USA
| | - Devendra K Agrawal
- Department of Translational Research, Western University of Health Sciences , Pomona , CA , USA
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Okada M, Imoto K, Sugiyama A, Yasuda J, Yamawaki H. New Insights into the Role of Basement Membrane-Derived Matricryptins in the Heart. Biol Pharm Bull 2018; 40:2050-2060. [PMID: 29199230 DOI: 10.1248/bpb.b17-00308] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The extracellular matrix (ECM), which contributes to structural homeostasis as well as to the regulation of cellular function, is enzymatically cleaved by proteases, such as matrix metalloproteinases and cathepsins, in the normal and diseased heart. During the past two decades, matricryptins have been defined as fragments of ECM with a biologically active cryptic site, namely the 'matricryptic site,' and their biological activities have been initially identified and clarified, including anti-angiogenic and anti-tumor effects. Thus, matricryptins are expected to be novel anti-tumor drugs, and thus widely investigated. Although there are a smaller number of studies on the expression and function of matricryptins in fields other than cancer research, some matricryptins have been recently clarified to have biological functions beyond an anti-angiogenic effect in heart. This review particularly focuses on the expression and function of basement membrane-derived matricryptins, including arresten, canstatin, tumstatin, endostatin and endorepellin, during cardiac diseases leading to heart failure such as cardiac hypertrophy and myocardial infarction.
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Affiliation(s)
- Muneyoshi Okada
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University
| | - Keisuke Imoto
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University
| | - Akira Sugiyama
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University
| | - Jumpei Yasuda
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University
| | - Hideyuki Yamawaki
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University
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Malek G, Busik J, Grant MB, Choudhary M. Models of retinal diseases and their applicability in drug discovery. Expert Opin Drug Discov 2018; 13:359-377. [PMID: 29382242 DOI: 10.1080/17460441.2018.1430136] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
INTRODUCTION The impact of vision debilitating diseases is a global public health concern, which will continue until effective preventative and management protocols are developed. Two retinal diseases responsible for the majority of vision loss in the working age adults and elderly populations are diabetic retinopathy (DR) and age-related macular degeneration (AMD), respectively. Model systems, which recapitulate aspects of human pathology, are valid experimental modalities that have contributed to the identification of signaling pathways involved in disease development and consequently potential therapies. Areas covered: The pathology of DR and AMD, which serve as the basis for designing appropriate models of disease, is discussed. The authors also review in vitro and in vivo models of DR and AMD and evaluate the utility of these models in exploratory and pre-clinical studies. Expert opinion: The complex nature of non-Mendelian diseases such as DR and AMD has made identification of effective therapeutic treatments challenging. However, the authors believe that while in vivo models are often criticized for not being a 'perfect' recapitulation of disease, they have been valuable experimentally when used with consideration of the strengths and limitations of the experimental model selected and have a place in the drug discovery process.
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Affiliation(s)
- Goldis Malek
- a Department of Ophthalmology , Duke University School of Medicine , Durham , NC , USA.,b Department of Pathology , Duke University School of Medicine , Durham , NC , USA
| | - Julia Busik
- c Department of Physiology , Michigan State University , East Lansing , MI , USA
| | - Maria B Grant
- d Department of Ophthalmology , University of Alabama at Birmingham , Birmingham , Al , USA
| | - Mayur Choudhary
- a Department of Ophthalmology , Duke University School of Medicine , Durham , NC , USA
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Wang RF, Meng QY. Nanoparticle-mediated arresten gene inhibits neointimal formation of vein grafts: an experimental research. J Thorac Dis 2017; 8:3081-3086. [PMID: 28066586 DOI: 10.21037/jtd.2016.11.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Recently, we established a new rat model of venous arterialization by grafting the jugular vein into carotid arteries. In many respects, the morphological features of this murine vascular graft model resemble those of human venous bypass graft diseases. Using this model, we studied nanoparticles that mediated the arresten gene to inhibit the neointimal formation of vein grafts. METHODS Thirty healthy Wistar female rats were randomly divided into three groups. Rat models of grafting the jugular vein into carotid arteries were established. Before and after surgery, all rats were subjected to anticoagulant drugs; and these were subcutaneously injected through different reagents after surgery. Group A: subcutaneous injection of nanoparticles to mediate the arresten gene (0.2 mL); group B: subcutaneous injection of blank nanoparticles (0.2 mL); group C: subcutaneous injection of saline (0.2 mL). At two weeks after the operation, veins of the objective blood vessel were obtained. Pathological changes of local vascular tissues and the new intima hyperplasia of experimental vascular segments were observed. Immunohistochemistry was used to observe the expression of MMPs. RESULTS (I) After two weeks, pathological intimal hyperplasia reactions were more obvious in groups B and C than in group A (P<0.05). The difference between groups B and C was not statistically significant (P>0.05); (II) the expression of MMP-2 could be observed in different degrees among the three groups. The expression of MMP-2 markedly increased in groups B and C compared to group A (P<0.05), but the difference between these two groups was not statistically significant (P>0.05). CONCLUSIONS (I) Nanoparticle-mediated arresten genes can reduce intimal hyperplasia in grafts; (II) we have recently shown that this gene reduced intimal hyperplasia, and this reduction is related to the reduced expression of MMP-2. This shows that the arresten gene can inhibit the degradation of the extracellular matrix (ECM).
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Affiliation(s)
- Rong-Fei Wang
- Department of Vascular Surgery, Affiliated Jinan Central Hospital of Shandong University, Jinan 250013, China
| | - Qing-Yi Meng
- Department of Vascular Surgery, Affiliated Jinan Central Hospital of Shandong University, Jinan 250013, China
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Abdelfattah NS, Amgad M, Zayed AA, Hussein H, Abd El-Baky N. Molecular underpinnings of corneal angiogenesis: advances over the past decade. Int J Ophthalmol 2016; 9:768-79. [PMID: 27275438 PMCID: PMC4886880 DOI: 10.18240/ijo.2016.05.24] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Accepted: 01/19/2016] [Indexed: 01/29/2023] Open
Abstract
The cornea is maintained in an avascular state by maintaining an environment whereby anti-angiogenic factors take the upper hand over factors promoting angiogenesis. Many of the common pathologies affecting the cornea involve the disruption of such equilibrium and the shift towards new vessel formation, leading to corneal opacity and eventually-vision loss. Therefore it is of paramount importance that the molecular underpinnings of corneal neovascularization (CNV) be clearly understood, in order to develop better targeted treatments. This article is a review of the literature on the recent discoveries regarding pro-angiogenic factors of the cornea (such as vascular endothelial growth factors, fibroblast growth factor and matrix metalloproteinases) and anti-angiogenic factors of the cornea (such as endostatins and neostatins). Further, we review the molecular underpinnings of lymphangiogenesis, a process now known to be almost separate from (yet related to) hemangiogenesis.
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Affiliation(s)
| | - Mohamed Amgad
- Faculty of Medicine, Cairo University, Cairo 11111, Egypt
| | - Amira A. Zayed
- Department of Oncology, Mayo Clinic, Rochester, Minnesota 55904, USA
| | - Heba Hussein
- Faculty of Oral and Dental Medicine, Cairo University, Cairo 11111, Egypt
| | - Nawal Abd El-Baky
- Antibody Laboratory, Protein Research Department, Genetic Engineering and Biotechnology Research Institute, City for Scientific Research and Technology Applications, Alexandria 22033, Egypt
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Shi H, Cheng Y, Ye J, Cai P, Zhang J, Li R, Yang Y, Wang Z, Zhang H, Lin C, Lu X, Jiang L, Hu A, Zhu X, Zeng Q, Fu X, Li X, Xiao J. bFGF Promotes the Migration of Human Dermal Fibroblasts under Diabetic Conditions through Reactive Oxygen Species Production via the PI3K/Akt-Rac1- JNK Pathways. Int J Biol Sci 2015; 11:845-59. [PMID: 26078726 PMCID: PMC4466465 DOI: 10.7150/ijbs.11921] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Accepted: 04/13/2015] [Indexed: 12/26/2022] Open
Abstract
Fibroblasts play a pivotal role in the process of cutaneous wound repair, whereas their migratory ability under diabetic conditions is markedly reduced. In this study, we investigated the effect of basic fibroblast growth factor (bFGF) on human dermal fibroblast migration in a high-glucose environment. bFGF significantly increased dermal fibroblast migration by increasing the percentage of fibroblasts with a high polarity index and reorganizing F-actin. A significant increase in intracellular reactive oxygen species (ROS) was observed in dermal fibroblasts under diabetic conditions following bFGF treatment. The blockage of bFGF-induced ROS production by either the ROS scavenger N-acetyl-L-cysteine (NAC) or the NADPH oxidase inhibitor diphenylene iodonium chloride (DPI) almost completely neutralized the increased migration rate of dermal fibroblasts promoted by bFGF. Akt, Rac1 and JNK were rapidly activated by bFGF in dermal fibroblasts, and bFGF-induced ROS production and promoted dermal fibroblast migration were significantly attenuated when suppressed respectively. In addition, bFGF-induced increase in ROS production was indispensable for the activation of focal adhesion kinase (FAK) and paxillin. Therefore, our data suggested that bFGF promotes the migration of human dermal fibroblasts under diabetic conditions through increased ROS production via the PI3K/Akt-Rac1-JNK pathways.
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Affiliation(s)
- Hongxue Shi
- 1. School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, 325035 China
| | - Yi Cheng
- 1. School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, 325035 China
| | - Jingjing Ye
- 1. School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, 325035 China
| | - Pingtao Cai
- 1. School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, 325035 China
| | - Jinjing Zhang
- 1. School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, 325035 China
| | - Rui Li
- 1. School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, 325035 China
| | - Ying Yang
- 1. School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, 325035 China
| | - Zhouguang Wang
- 1. School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, 325035 China
| | - Hongyu Zhang
- 1. School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, 325035 China
| | - Cai Lin
- 2. The First Affiliate Hospital, Wenzhou Medical University, Wenzhou, 325035, China
| | - Xianghong Lu
- 3. Translation Medicine Research Center, Lishui People's Hospital, Wenzhou Medical University, Lishui, 323000, China
| | - Liping Jiang
- 1. School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, 325035 China
| | - Aiping Hu
- 1. School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, 325035 China
| | - Xinbo Zhu
- 1. School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, 325035 China
| | - Qiqiang Zeng
- 2. The First Affiliate Hospital, Wenzhou Medical University, Wenzhou, 325035, China
| | - Xiaobing Fu
- 4. Wound Healing and Cell Biology Laboratory, Institute of Basic Medical Science, Chinese PLA General Hospital, Beijing, PR China
| | - Xiaokun Li
- 1. School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, 325035 China
| | - Jian Xiao
- 1. School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, 325035 China
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Extracellular matrix modulates angiogenesis in physiological and pathological conditions. BIOMED RESEARCH INTERNATIONAL 2014; 2014:756078. [PMID: 24949467 PMCID: PMC4052469 DOI: 10.1155/2014/756078] [Citation(s) in RCA: 137] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Accepted: 02/27/2014] [Indexed: 12/17/2022]
Abstract
Angiogenesis is a multistep process driven by a wide range of positive and negative regulatory factors. Extracellular matrix (ECM) plays a crucial role in the regulation of this process. The degradation of ECM, occurring in response to an angiogenic stimulus, leads to degradation or partial modification of matrix molecules, release of soluble factors, and exposure of cryptic sites with pro- and/or antiangiogenic activity. ECM molecules and fragments, resulting from proteolysis, can also act directly as inflammatory stimuli, and this can explain the exacerbated angiogenesis that drives and maintains several inflammatory diseases. In this review we have summarized some of the more recent literature data concerning the molecular control of ECM in angiogenesis in both physiological and pathological conditions.
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Sudhakar YA, Verma RK, Pawar SC. Type IV collagen α1-chain noncollagenous domain blocks MMP-2 activation both in-vitro and in-vivo. Sci Rep 2014; 4:4136. [PMID: 24670518 PMCID: PMC3966261 DOI: 10.1038/srep04136] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Accepted: 01/09/2014] [Indexed: 12/11/2022] Open
Abstract
α1(IV)NC1 inhibits angiogenesis by regulating MAPK activation, this biological function was partly attributed α1(IV)NC1 binding to α1β1-integrin. However, its potent antiangiogenic activity and the molecular targets of α1(IV)NC1 has not been investigated. In the present study, the regulation of MMP-2 activation by α1(IV)NC1 was evaluated. α1β1-integrin which is required for inhibition of angiogenesis is not playing a role in cellular invasion and inhibition of MMP-2 activation by α1(IV)NC1. We found that α1(IV)NC1 binds the CBD of MMP-2 and forming a stable complex that prevents activation of MMP-2. The antiangiogenic activity of α1(IV)NC1 is mediated, in part, by this binding activity. In addition, up-regulation of TIMP-2 by α1(IV)NC1 led to saturation of MT1-MMP binding sites, which in turn led to inhibition of MMP-2 activation. In-vivo studies using α1-integrin null-mice treated with higher doses of α1(IV)NC1 showed integrin independent inhibition of tumor growth and active-MMP-2, without affecting MMP-9, MMP-7 and angiostatin.
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Affiliation(s)
- Yakkanti Akul Sudhakar
- 1] Cell Signaling Laboratory, Bioscience Division, Center for Cancer and Metabolism, SRI International, Menlo Park, CA 94025, USA [2] Cell Signaling and Tumor Angiogenesis Laboratory, Department of Genetics, Boys Town National Research Hospital, Omaha, NE 68131, USA
| | - Raj Kumar Verma
- Irma Lerma Rangel College of Pharmacy, Texas A&M Health Science Center, Kingsville, Texas 78363, USA
| | - Smita C Pawar
- Department of Genetics, Osmania University, Hyderabad, AP 500007, India
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Gas6 stimulates angiogenesis of human retinal endothelial cells and of zebrafish embryos via ERK1/2 signaling. PLoS One 2014; 9:e83901. [PMID: 24409287 PMCID: PMC3883657 DOI: 10.1371/journal.pone.0083901] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Accepted: 11/18/2013] [Indexed: 01/24/2023] Open
Abstract
Aim To determine if growth arrest-specific 6 (Gas6) plays an important role in the regulation of angiogenesis in human retinal microvascular endothelial cells (HRMECs) and in vessel development of zebrafish. Methods Proliferation, wound-healing cell migration, and tube formation were measured in HRMECs treated with recombinant human Gas6 (rhGas6). Sprague-Dawley rat aortas in Matrigels were treated with rhGas6, and microvessel sprouting emanating from arterial rings was analyzed. Transgenic zebrafish embryos (flk:GFP) were microinjected with rhGas6 at 50 hours post-fertilization (hpf), and ectopic sprouting of subintestinal vessels (SIVs) was observed under a confocal microscope. Morpholino oligonucleotides (MOs) were microinjected to knockdown gas6 in zebrafish embryos, and intersegmental vessel impairment was observed. The effect of the extracellular signal-regulated kinase (ERK1/2) inhibitor on the migration of HRMECs and on vessel development in zebrafish embryos was tested. Results rhGas6 stimulated proliferation, migration, and tube formation in HRMECs in a dose-dependent manner. In rat aortas, rhGas6 induced vessel outgrowth, and the sprouting length was longer than that of controls. The rhGas6-microinjected zebrafish embryos had significantly increased vessel outgrowth in the SIVs. Recombinant human vascular endothelial growth factor (rhVEGF) served as a positive control. Knockdown of gas6 inhibited angiogenesis in the developing vessels of zebrafish. The ERK1/2 inhibitor inhibited HRMEC migration and intersegmental vessel formation in zebrafish embryos. Conclusions/Interpretations These data suggest that Gas6 plays a pivotal role in proliferation, migration, and sprouting of angiogenic endothelial cells in the retina and in zebrafish embryos. Furthermore, Gas6 induced angiogenic processes are induced via phosphorylation of ERK1/2.
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Monboisse JC, Oudart JB, Ramont L, Brassart-Pasco S, Maquart FX. Matrikines from basement membrane collagens: a new anti-cancer strategy. Biochim Biophys Acta Gen Subj 2014; 1840:2589-98. [PMID: 24406397 DOI: 10.1016/j.bbagen.2013.12.029] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Revised: 12/19/2013] [Accepted: 12/31/2013] [Indexed: 01/04/2023]
Abstract
BACKGROUND Tumor microenvironment is a complex system composed of a largely altered extracellular matrix with different cell types that determine angiogenic responses and tumor progression. Upon the influence of hypoxia, tumor cells secrete cytokines that activate stromal cells to produce proteases and angiogenic factors. In addition to stromal ECM breakdown, proteases exert various pro- or anti-tumorigenic functions and participate in the release of various ECM fragments, named matrikines or matricryptins, capable to act as endogenous angiogenesis inhibitors and to limit tumor progression. SCOPE OF REVIEW We will focus on the matrikines derived from the NC1 domains of the different constitutive chains of basement membrane-associated collagens and mainly collagen IV. MAJOR CONCLUSIONS The putative targets of the matrikine control are the proliferation and invasive properties of tumor or inflammatory cells, and the angiogenic and lymphangiogenic responses. Collagen-derived matrikines such as canstatin, tumstatin or tetrastatin for example, decrease tumor growth in various cancer models. Their anti-cancer activities comprise anti-proliferative effects on tumor or endothelial cells by induction of apoptosis or cell cycle blockade and the induction of a loss of their migratory phenotype. They were used in various preclinical therapeutic strategies: i) induction of their overexpression by cancer cells or by the host cells, ii) use of recombinant proteins or synthetic peptides or structural analogues designed from the structure of the active sequences, iii) used in combined therapies with conventional chemotherapy or radiotherapy. GENERAL SIGNIFICANCE Collagen-derived matrikines strongly inhibited tumor growth in many preclinical cancer models in mouse. They constitute a new family of anti-cancer agents able to limit cancer progression. This article is part of a Special Issue entitled Matrix-mediated cell behaviour and properties.
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Affiliation(s)
- Jean Claude Monboisse
- FRE CNRS/URCA 7369, Université de Reims Champagne Ardenne, UFR Médecine, 51 Rue Cognacq Jay, 51095 Reims Cedex, France; Laboratoire Central de Biochimie, CHU de Reims, France
| | - Jean Baptiste Oudart
- FRE CNRS/URCA 7369, Université de Reims Champagne Ardenne, UFR Médecine, 51 Rue Cognacq Jay, 51095 Reims Cedex, France; Laboratoire Central de Biochimie, CHU de Reims, France
| | - Laurent Ramont
- FRE CNRS/URCA 7369, Université de Reims Champagne Ardenne, UFR Médecine, 51 Rue Cognacq Jay, 51095 Reims Cedex, France; Laboratoire Central de Biochimie, CHU de Reims, France
| | - Sylvie Brassart-Pasco
- FRE CNRS/URCA 7369, Université de Reims Champagne Ardenne, UFR Médecine, 51 Rue Cognacq Jay, 51095 Reims Cedex, France
| | - François Xavier Maquart
- FRE CNRS/URCA 7369, Université de Reims Champagne Ardenne, UFR Médecine, 51 Rue Cognacq Jay, 51095 Reims Cedex, France; Laboratoire Central de Biochimie, CHU de Reims, France.
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Gunda V, Verma RK, Sudhakar YA. Inhibition of elastin peptide-mediated angiogenic signaling mechanism(s) in choroidal endothelial cells by the α6(IV)NC1 collagen fragment. Invest Ophthalmol Vis Sci 2013; 54:7828-35. [PMID: 24194191 DOI: 10.1167/iovs.12-10870] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
PURPOSE The inhibitory effects and mechanism(s) of type IV collagen α-6 chain-derived noncollagenous domain (α6[IV]NC1 or hexastatin) on elastin-derived peptide (EDP)-activated choroidal endothelial cell migration, kinase signaling, and membrane type 1 metalloproteinase (MT1-MMP) activation are explored. METHODS Mouse choroidal endothelial cells (MCECs) were incubated in media with soluble EDPs (kappa elastin, mouse elastin, and Val-Gly-Val-Ala-Pro-Gly [VGVAPG] hexapeptide) for different time intervals with or without α6(IV)NC1. The MCECs proliferation, migration, tube formation, MT1-MMP expression, and angiogenic signaling were analyzed in cells subjected to EDP and α6(IV)NC1 treatments. The MCECs also were subjected to EDPs, and specific inhibitors for evaluation of focal adhesion kinase (FAK) and protein kinase B (Akt) phosphorylation. RESULTS Kappa elastin, mouse elastin, and VGVAPG enhanced the migration, without affecting the proliferation of MCECs. The α6(IV)NC1 inhibited survival and EDP-activated migration of MCECs. The EDP-activated MCEC tube formation on matrigel also was inhibited by α6(IV)NC1. Further, EDP-activated MT1-MMP expression and FAK/phosphoinositide-3-kinase (PI-3K)/mammalian target of rapamycin (mToR)/Akt phosphorylation in MCECs, were reduced by α6(IV)NC1. The EDP-induced FAK and Akt phosphorylation was blocked by FAK- and Akt-specific inhibitors. CONCLUSIONS The EDPs and α6(IV)NC1 are identified to exhibit opposing effects on MCEC angiogenic behavior and signaling. The α6(IV)NC1 inhibited cell survival, EDP-mediated migration, MT1-MMP expression and, FAK/PI-3K/mToR/Akt phosphorylation in MCECs. This work demonstrates α6(IV)NC1 as a prospective endogenous molecule for the treatment of diseases involving choroidal neovascularization in the eye.
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Affiliation(s)
- Venugopal Gunda
- Cell Signaling, Retinal & Tumor Angiogenesis Laboratory, Boys Town National Research Hospital, Omaha, Nebraska
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Gunda V, Verma RK, Pawar SC, Sudhakar YA. Developments in purification methods for obtaining and evaluation of collagen derived endogenous angioinhibitors. Protein Expr Purif 2013; 94:46-52. [PMID: 24215863 DOI: 10.1016/j.pep.2013.10.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Revised: 10/30/2013] [Accepted: 10/31/2013] [Indexed: 10/26/2022]
Abstract
Collagen constitutes one of the vital components of the basement membrane scaffolds. Non-collagenous domains (NC1) derived from collagens exhibit potent anti-angiogenic properties, thus attaining significance in regulation of angiogenesis promoted diseases. Individual NC1 domains essential for anti-angiogenic evaluations are generally obtained through purification of individual non-collagenous domains, which have undergone steady developments for enhancing the yields, purpose of biological evaluations and solubility based on the nature of different NC1 domains. This review focuses on the method developments in obtaining biologically active NC1 domains and for specific evaluations in different scenarios.
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Affiliation(s)
- Venugopal Gunda
- The Eppley Institute for Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Raj K Verma
- Irma Lerma Rangel College of Pharmacy, Texas A&M Health Science Center, 78363, USA
| | - Smita C Pawar
- Department of Genetics, Osmania University, Hyderabad, AP 500007, India
| | - Yakkanti A Sudhakar
- Cell Signaling Laboratory, Center for Cancer and Metabolism, Bioscience Division, SRI International, Menlo Park, CA 94025, USA.
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Rezzola S, Belleri M, Gariano G, Ribatti D, Costagliola C, Semeraro F, Presta M. In vitro and ex vivo retina angiogenesis assays. Angiogenesis 2013; 17:429-42. [DOI: 10.1007/s10456-013-9398-x] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Accepted: 10/03/2013] [Indexed: 12/16/2022]
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17
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Xu HY, Pan YM, Chen ZW, Lin Y, Wang LH, Chen YH, Jie TT, Lu YY, Liu JC. 12-Deoxyphorbol 13-palmitate inhibit VEGF-induced angiogenesis via suppression of VEGFR-2-signaling pathway. JOURNAL OF ETHNOPHARMACOLOGY 2013; 146:724-733. [PMID: 23434607 DOI: 10.1016/j.jep.2013.01.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Revised: 12/08/2012] [Accepted: 01/02/2013] [Indexed: 06/01/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE 12-Deoxyphorbol 13-palmitate (G) is one toxic compound isolated from Euphorbia fischeriana, an Asian spice used for cancer treatment as a folk remedy. However, whether 12-deoxyphorbol 13-palmitate affects angiogenesis remains unclear. AIM OF THE STUDY To explore the in vitro and in vivo antiangiogenic effects of 12-deoxyphorbol 13-palmitate and its underlying mechanisms. MATERIALS AND METHODS We explored antigenic functions in human umbilical vein endothelial cells (HUVEC) by 12-deoxyphorbol 13-palmitate, including proliferation, migration and metastasis through matrigel plug assay, chorioallantoic membrane assay, in vitro migration assay, tube formation assay, motility assay. Antibody chip was applied to screen differentially expressed proteins modulated by 12-deoxyphorbol 13-palmitate, and was further confirmed by RT-PCR and western blot analysis. Tumor xenograft mice were applied to investigate whether 12-deoxyphorbol 13-palmitate could inhibit microvessel density in vivo. RESULTS 12-Deoxyphorbol 13-palmitate inhibited vascular endothelial growth factor (VEGF)-induced angiogenic processes in vitro, such as proliferation, in vitro migration, and tube formation of HUVEC. In chorioallantoic membrane assay, 12-deoxyphorbol 13-palmitate significantly inhibited neovessel formation. Antibody chip technology demonstrated decreased expression of TIMP-1, TIMP-2, VEGF, basic fibroblast growth factor (bFGF), matrix metalloproteinases (MMP)-2, VEGFR-2 and VEGFR-3 proteins in HUVEC after 24h. In addition, 12-deoyphorbol 13-palmitate inhibited the in vivo growth of MCF-7 cells in grafted mouse model. Immunohistochemistry staining showed decreased microvessel density (CD31) and attenuated VEGFR-2 signaling pathways by 12-deoxyphorbol 13-palmitate. CONCLUSION 12-Deoxyphorbol 13-palmitate may be utilized to target active angiogenesis through VEGF/VEGFR2 signal pathway for cancer.
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Affiliation(s)
- Hui-Yu Xu
- Department of Immunology, Qiqihar Medical University, No.333 BuKui Street, Qiqihar 161006, PR China
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Gunda V, Boosani CS, Verma RK, Guda C, Sudhakar YA. L-arginine mediated renaturation enhances yield of human, α6 Type IV collagen non-collagenous domain from bacterial inclusion bodies. Protein Pept Lett 2013; 19:1112-21. [PMID: 22512648 DOI: 10.2174/092986612802762750] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2011] [Revised: 02/16/2012] [Accepted: 02/16/2012] [Indexed: 11/22/2022]
Abstract
The anti-angiogenic, carboxy terminal non-collagenous domain (NC1) derived from human Collagen type IV alpha 6 chain, [α6(IV)NC1] or hexastatin, was earlier obtained using different recombinant methods of expression in bacterial systems. However, the effect of L-arginine mediated renaturation in enhancing the relative yields of this protein from bacterial inclusion bodies has not been evaluated. In the present study, direct stirring and on-column renaturation methods using L-arginine and different size exclusion chromatography matrices were applied for enhancing the solubility in purifying the recombinant α6(IV)NC1 from bacterial inclusion bodies. This methodology enabled purification of higher quantities of soluble protein from inclusion bodies, which inhibited endothelial cell proliferation, migration and tube formation. Thus, the scope for L-arginine mediated renaturation in obtaining higher yields of soluble, biologically active NC1 domain from bacterial inclusion bodies was evaluated.
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Affiliation(s)
- Venugopal Gunda
- Cell Signaling, Retinal and Tumor Angiogenesis Laboratory, Department of Genetics, Boys Town National Research Hospital, Omaha, NE 68131, USA
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Gunda V, Sudhakar YA. Regulation of Tumor Angiogenesis and Choroidal Neovascularization by Endogenous Angioinhibitors. ACTA ACUST UNITED AC 2013; 5:417-426. [PMID: 25258675 DOI: 10.4172/1948-5956.1000235] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Angiogenesis is the process of neovascularization from parent blood vessels, which is a prerequisite for many physiological and pathological conditions and is regulated by a balance between endogenous angioinhibitors and angioactivators or angiogenic factors. Imbalance between angioinhibitors and angioactivators is associated with neovascularization capacity during progression of tumor development and Choroidal Neovascularization (CNV). Normalization of pathological angiogenesis is considered as an alternative strategy to prevent the tumor growth in cancer progression or retinal damage in CNV. Various angioinhibitors are being identified and evaluated for their pathological angiogenesis regulation, of which endogenous angioinhibitors are one class derived either from extra cellular matrix or from non-extra cellular matrix of human origin. Endogenous angioinhibitors are gaining much significance as they interact with proliferating endothelial cells by binding to distinct integrins and non-integrin receptors, regulating different intracellular signaling mechanisms leading to inhibition of choroidal neovascularization and tumor growth. This review will focus on endogenous angioinhibitors and their receptor(s) mediated angioinhibitory signaling, which are of major concern in angiogenesis and their clinical and pharmaceutical implications.
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Affiliation(s)
- Venugopal Gunda
- The Eppley Institute for Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Yakkanti A Sudhakar
- Cell Signaling Laboratory, Bioscience Division, Center for Cancer and Metabolism, Stanford Research Institute (SRI) International, Menlo Park, CA 94025, USA
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Role of matrix metalloproteinase-2 and -9 in the development of diabetic retinopathy. J Ocul Biol Dis Infor 2012; 5:1-8. [PMID: 23833698 DOI: 10.1007/s12177-012-9091-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Accepted: 06/07/2012] [Indexed: 12/11/2022] Open
Abstract
Diabetic retinopathy represents the most common causes of vision loss in patients affected by diabetes mellitus. The cause of vision loss in diabetic retinopathy is complex and remains incompletely understood. One of the earliest changes in the development of retinopathy is the accelerated apoptosis of retinal microvascular cells and the formation of acellular capillaries by unknown mechanism. Results of a recent research suggest an important role of matrix metalloproteinases (MMPs) in the development of diabetic retinopathy. MMPs are a large family of proteinases that remodel extracellular matrix components, and under pathological condition, its induction is considered as a negative regulator of cell survival; and in diabetes, latent MMPs are activated in the retina and its capillary cells, and activation of MMP-2 and -9 induces apoptosis of retinal capillary cells. This review will focus on the MMP-2 and MMP-9 in the diabetic retina with special reference to oxidative stress, mitochondria dysfunction, inflammation and angiogenesis, as well as summarizing the current information linking these proteins to pathogenesis of diabetic retinopathy.
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Park D, Kim Y, Kim H, Kim K, Lee YS, Choe J, Hahn JH, Lee H, Jeon J, Choi C, Kim YM, Jeoung D. Hyaluronic acid promotes angiogenesis by inducing RHAMM-TGFβ receptor interaction via CD44-PKCδ. Mol Cells 2012; 33:563-74. [PMID: 22610405 PMCID: PMC3887750 DOI: 10.1007/s10059-012-2294-1] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2011] [Revised: 04/06/2012] [Accepted: 04/23/2012] [Indexed: 12/12/2022] Open
Abstract
Hyaluronic acid (HA) has been shown to promote angiogenesis. However, the mechanism behind this effect remains largely unknown. Therefore, in this study, the mechanism of HA-induced angiogenesis was examined. CD44 and PKCδ were shown to be necessary for induction of the receptor for HA-mediated cell motility (RHAMM), a HA-binding protein. RHAMM was necessary for HA-promoted cellular invasion and endothelial cell tube formation. Cytokine arrays showed that HA induced the expression of plasminogen activator-inhibitor-1 (PAI), a downstream target of TGFβ receptor signaling. The induction of PAI-1 was dependent on CD44 and PKCδ. HA also induced an interaction between RHAMM and TGFβ receptor I, and induction of PAI-1 was dependent on RHAMM and TGFβ receptor I. Histone deacetylase 3 (HDAC3), which is decreased by HA via rac1, reduced induction of plasminogen activator inhibitor-1 (PAI-1) by HA. ERK, which interacts with RHAMM, was necessary for induction of PAI-1 by HA. Snail, a downstream target of TGFβ signaling, was also necessary for induction of PAI-1. The down regulation of PAI-1 prevented HA from enhancing endothelial cell tube formation and from inducing expression of angiogenic factors, such as ICAM-1, VCAM-1 and MMP-2. HDAC3 also exerted reduced expression of MMP-2. In this study, we provide a novel mechanism of HA-promoted angiogenesis, which involved RHAMM-TGFβRI signaling necessary for induction of PAI-1.
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Affiliation(s)
- Deokbum Park
- School of Biological Sciences, College of Natural Sciences, Kangwon National University, Chuncheon 200-701,
Korea
| | - Youngmi Kim
- School of Biological Sciences, College of Natural Sciences, Kangwon National University, Chuncheon 200-701,
Korea
| | - Hyunah Kim
- School of Biological Sciences, College of Natural Sciences, Kangwon National University, Chuncheon 200-701,
Korea
| | - kyungjong Kim
- School of Biological Sciences, College of Natural Sciences, Kangwon National University, Chuncheon 200-701,
Korea
| | - Yun-Sil Lee
- College of Pharmacy, Ewha Womans University, Seoul 120-750,
Korea
| | - Jongseon Choe
- School of Medicine, Kangwon National University, Chunchon 200-701,
Korea
| | - Jang-Hee Hahn
- School of Medicine, Kangwon National University, Chunchon 200-701,
Korea
| | - Hansoo Lee
- School of Biological Sciences, College of Natural Sciences, Kangwon National University, Chuncheon 200-701,
Korea
| | - Jongwook Jeon
- Cell Signaling and BioImaging Laboratory, Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701,
Korea
| | - Chulhee Choi
- Cell Signaling and BioImaging Laboratory, Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701,
Korea
| | - Young-Myeong Kim
- School of Medicine, Kangwon National University, Chunchon 200-701,
Korea
| | - Dooil Jeoung
- School of Biological Sciences, College of Natural Sciences, Kangwon National University, Chuncheon 200-701,
Korea
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Boosani CS, Sudhakar YA. Proteolytically Derived Endogenous Angioinhibitors Originating from the Extracellular Matrix. Pharmaceuticals (Basel) 2011; 4:1551-1577. [PMID: 22267953 PMCID: PMC3260939 DOI: 10.3390/ph4121551] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Angiogenesis, a neovascularization process induced from the existing parent blood vessels, is a prerequisite for many physiological and pathological conditions. Under physiological conditions it is regulated by a balance between endogenous angioinhibitors and angioactivators, and an imbalance between them would lead to pathological conditions such as cancer, age-related macular degeneration (AMD), diabetic retinopathy, cardiovascular diseases, etc. Several proteolytically generated endogenous molecules have been identified which exhibit angioinhibition and/or antitumor activities. These angioinhibitors interact with endothelial and tumor cells by binding to distinct integrins and initiate many of their intracellular signaling mechanisms regulating the cell survival and or apoptotic pathways. The present review will focus on the extracellular matrix derived angioinhibitors, and their mechanisms of actions that point to the clinical significance and therapeutic implications.
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Affiliation(s)
- Chandra Shekhar Boosani
- Cell Signaling, Retinal and Tumor Angiogenesis Laboratory, Department of Genetics, Boys Town National Research Hospital, Omaha, NE 68131, USA; E-Mail:
| | - Yakkanti A. Sudhakar
- Cell Signaling, Retinal and Tumor Angiogenesis Laboratory, Department of Genetics, Boys Town National Research Hospital, Omaha, NE 68131, USA; E-Mail:
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +1-402-498-6681; Fax: +1-402-498-6331
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Dom AM, Buckley AW, Brown KC, Egleton RD, Marcelo AJ, Proper NA, Weller DE, Shah YH, Lau JK, Dasgupta P. The α7-nicotinic acetylcholine receptor and MMP-2/-9 pathway mediate the proangiogenic effect of nicotine in human retinal endothelial cells. Invest Ophthalmol Vis Sci 2011; 52:4428-38. [PMID: 20554619 DOI: 10.1167/iovs.10-5461] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
PURPOSE Nicotine, the active component of cigarette smoke, has been found to stimulate angiogenesis in several experimental systems. In this study, the Matrigel duplex assay (Matrigel; BD Biosciences, Franklin Lakes, NJ) and the rat retinal explant assay were used to explore the molecular mechanisms underlying the proangiogenic effects of nicotine in endothelial cells. METHODS Western blot analysis was performed to determine the nicotinic acetylcholine receptor (nAChR) subtypes expressed on primary human retinal microvascular endothelial cells (HRMECs). The angiogenic effect of nicotine in the retina was evaluated with the duplex assay. The results obtained from the assay were confirmed by the rat retinal explant angiogenesis assay. ELISAs were used to measure MMP-2, -9, and -13 levels in HRMEC culture supernatants. The role of α7-nAChRs in nicotine-induced angiogenesis was examined by siRNA techniques. RESULTS Nicotine-induced angiogenesis required nAChR function and was associated with the upregulation of MMP-2 and -9 in HRMECs. Specifically, α7-nAChRs mediated the stimulatory effects of nicotine on retinal angiogenesis and MMP levels. Treatment of HRMECs with α7-nAChR antagonists ablated nicotine-induced angiogenesis. The inhibitory actions of α7-nAChR antagonists correlated with the suppression of MMP-2 and -9 levels in HRMECs. CONCLUSIONS The α7-nAChR is vital for the proangiogenic activity of nicotine. The α7-nAChRs expressed on HRMECs upregulate levels of MMP-2 and -9, which stimulate retinal angiogenesis. The data also suggest that α7-nAChR antagonists could be useful agents for the therapy of angiogenesis-related retinal diseases.
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Affiliation(s)
- Aaron M Dom
- Department of Pharmacology, Physiology, and Toxicology, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia 25755, USA
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Lin J, Jia Y, Zeng W, Mi Y, Zhang C. Basic FGF Promotes Proliferation of Ovarian Granulosa Cells in the Laying Chickens Via FGFR1 and PKC Pathway. Reprod Domest Anim 2011; 47:135-42. [DOI: 10.1111/j.1439-0531.2011.01813.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Bibliography. Neonatology and perinatology. Current world literature. Curr Opin Pediatr 2011; 23:253-7. [PMID: 21412083 DOI: 10.1097/mop.0b013e3283454167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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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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