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Iqbal M, Waqas M, Mo Q, Shahzad M, Zeng Z, Qamar H, Mehmood K, Kulyar MFEA, Nawaz S, Li J. Baicalin inhibits apoptosis and enhances chondrocyte proliferation in thiram-induced tibial dyschondroplasia in chickens by regulating Bcl-2/Caspase-9 and Sox-9/Collagen-II expressions. Ecotoxicol Environ Saf 2023; 268:115689. [PMID: 37992645 DOI: 10.1016/j.ecoenv.2023.115689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 11/06/2023] [Accepted: 11/11/2023] [Indexed: 11/24/2023]
Abstract
Avian tibial dyschondroplasia (TD) is a skeletal disease affecting fast growing chickens, resulting in non-mineralized avascular cartilage. This metabolic disorder is characterized by lameness and reduced growth performance causing economic losses. The aim of this study was to investigate the protective effects of baicalin against TD caused by thiram exposure. A total of two hundred and forty (n = 240) one day-old broiler chickens were uniformly and randomly allocated into three different groups (n = 80) viz. control, TD, and baicalin groups. All chickens received standard feed, however, to induce TD, the TD and baicalin groups received thiram (tetramethylthiuram disulfide) at a rate of 50 mg/kg feed from days 4-7. The thiram induction in TD and baicalin groups resulted in lameness, high mortality, and enlarged growth-plate, poor production performance, reduction in ALP, GSH-Px, SOD, and T-AOC levels, and increased AST and ALT, and MDA levels. Furthermore, histopathological results showed less vascularization, and mRNA and protein expression levels of Sox-9, Col-II, and Bcl-2 showed significant downward trend, while caspase-9 displayed significant up-regulation in TD-affected chickens. After the TD induction, the baicalin group was orally administered with baicalin at a rate of 200 mg/kg from days 8-18. Baicalin administration increased the vascularization, and chondrocytes with intact nuclei, alleviated lameness, decreased GP size, increased productive capacity, and restored the liver antioxidant enzymes and serum biochemical levels. Furthermore, baicalin significantly up-regulated the gene and protein expressions of Sox-9, Col-II, and Bcl-2, and significantly down-regulated the expression of caspase-9 (p < 0.05). Therefore, the obtained results suggest that baicalin could be a possible choice in thiram toxicity alleviation by regulating apoptosis and chondrocyte proliferation in thiram-induced tibial dyschondroplasia.
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Affiliation(s)
- Mudassar Iqbal
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China; Faculty of Veterinary and Animal Sciences, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Muhammad Waqas
- Department of Veterinary Clinical Sciences, Faculty of Veterinary and Animal Sciences, University of Poonch Rawalakot, Poonch 12350, Azad Jammu and Kashmir, Pakistan
| | - Quan Mo
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Muhammad Shahzad
- Faculty of Veterinary and Animal Sciences, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Zhibo Zeng
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Hammad Qamar
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
| | - Khalid Mehmood
- Faculty of Veterinary and Animal Sciences, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | | | - Shah Nawaz
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Jiakui Li
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China.
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Fu S, Tan R, Feng Y, Yu P, Mo Y, Xiao W, Wang S, Zhang J. N-methyl-N-nitrosourea induces zebrafish anomalous angiogenesis through Wnt/β-catenin pathway. Ecotoxicol Environ Saf 2022; 239:113674. [PMID: 35623148 DOI: 10.1016/j.ecoenv.2022.113674] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 05/05/2022] [Accepted: 05/18/2022] [Indexed: 06/15/2023]
Abstract
N-methyl-N-nitrosourea (MNU) is a prevalent environmental carcinogen, which leads to tumors in various organs in animal models, while the mechanisms involved were still not fully understood. It is well known that anomalous angiogenesis is a key step in tumorigenesis and progression. In this study, we found that MNU induced abnormal angiogenesis which was accompanied by upregulation of rspo1, p53 and vegfaa in zebrafish embryos. Moreover, it revealed that MNU-induced ectopic sprouting of blood vessels was significantly reduced in rspo1-knockdown but not p53-knockdown embryos, indicating that rspo1 was necessary for MNU-induced abnormal angiogenesis. Additionally, pharmaceutical activation or inhibition of Wnt/β-catenin signaling pathway using (2'Z,3'E)- 6-bromoindirubin-3'-oxime or CCT036477 significantly increased or inhibited the pro-angiogenic effect of MNU on developing zebrafish embryos, which was confirmed by the effect of proliferation and migration in MNU-treated bEnd.3 cells. These data together indicated that rspo1/Wnt/β-catenin/vegfaa axis is involved in the modulation of MNU-induced anomalous angiogenesis.
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Affiliation(s)
- Saifang Fu
- Affiliated Hospital of Guangdong Medical University & Key Laboratory of Zebrafish Model for Development and Disease of Guangdong Medical University, Zhanjiang 524001, China
| | - Rongbang Tan
- Affiliated Hospital of Guangdong Medical University & Key Laboratory of Zebrafish Model for Development and Disease of Guangdong Medical University, Zhanjiang 524001, China
| | - Yufei Feng
- Affiliated Hospital of Guangdong Medical University & Key Laboratory of Zebrafish Model for Development and Disease of Guangdong Medical University, Zhanjiang 524001, China
| | - Ping Yu
- Affiliated Hospital of Guangdong Medical University & Key Laboratory of Zebrafish Model for Development and Disease of Guangdong Medical University, Zhanjiang 524001, China
| | - Yuqian Mo
- Affiliated Hospital of Guangdong Medical University & Key Laboratory of Zebrafish Model for Development and Disease of Guangdong Medical University, Zhanjiang 524001, China
| | - Wei Xiao
- Affiliated Hospital of Guangdong Medical University & Key Laboratory of Zebrafish Model for Development and Disease of Guangdong Medical University, Zhanjiang 524001, China; The Marine Biomedical Research Institute of Guangdong Zhanjiang, Zhanjiang 524023, China
| | - Shouyu Wang
- Department of Hepatobiliary Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Jingjing Zhang
- Affiliated Hospital of Guangdong Medical University & Key Laboratory of Zebrafish Model for Development and Disease of Guangdong Medical University, Zhanjiang 524001, China; The Marine Biomedical Research Institute of Guangdong Zhanjiang, Zhanjiang 524023, China.
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Zaitoun IS, Song YS, Suscha A, El Ragaby M, Sorenson CM, Sheibani N. 7, 8-Dihydroxyflavone, a TrkB receptor agonist, provides minimal protection against retinal vascular damage during oxygen-induced ischemic retinopathy. PLoS One 2021; 16:e0260793. [PMID: 34855884 PMCID: PMC8638941 DOI: 10.1371/journal.pone.0260793] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Accepted: 11/16/2021] [Indexed: 01/11/2023] Open
Abstract
Retinopathy of prematurity (ROP) is one of the main causes of blindness in children worldwide. Brain-derived neurotrophic factor (BDNF) and its receptor, tropomyosin-related kinase B (TrkB), play critical protective roles in the development and function of neurons and vasculature. Lack of BDNF expression results in increased endothelial cell apoptosis and reduced endothelial cell-cell contact. Premature babies who develop ROP tend to have lower serum BDNF levels. BDNF expression is also significantly lower in mouse retinas following exposure to hyperoxia compared to those reared in room air. Specifically, BDNF promotes angiogenic tube formation of endothelial cells (EC), and it is considered an EC survival factor required for stabilization of intramyocardial vessels. We hypothesized that the activation of TrkB receptor protects retinal vasculature in the mice during oxygen-induced ischemic retinopathy (OIR), a model of ROP. To test this hypothesis, we treated neonatal mice with 7,8-dihydroxyflavone (DHF) (5 mg/kg body weight), a TrkB receptor agonist. We examined its potential protective effects on retinal vessel obliteration and neovascularization, two hallmarks of ROP and OIR. We found that retinas from DHF treated postnatal day 8 (P8) and P12 mice have similar levels of vessel obliteration as retinas from age-matched control mice subjected to OIR. Similarly, DHF showed no significant effect on mitigation of retinal neovascularization during OIR in P17 mice. Collectively, our studies demonstrate that the TrkB receptor agonist DHF provides no significant protective effects during OIR.
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Affiliation(s)
- Ismail S. Zaitoun
- Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States of America
- McPherson Eye Research Institute, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States of America
- * E-mail:
| | - Yong-Seok Song
- Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States of America
- McPherson Eye Research Institute, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States of America
| | - Andrew Suscha
- Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States of America
| | - Mohamed El Ragaby
- Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States of America
| | - Christine M. Sorenson
- McPherson Eye Research Institute, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States of America
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States of America
| | - Nader Sheibani
- Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States of America
- McPherson Eye Research Institute, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States of America
- Department of Cell and Regenerative Biology, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States of America
- Department of Biomedical Engineering, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States of America
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Snoderly HT, Nurkiewicz TR, Bowdridge EC, Bennewitz MF. E-Cigarette Use: Device Market, Study Design, and Emerging Evidence of Biological Consequences. Int J Mol Sci 2021; 22:12452. [PMID: 34830344 PMCID: PMC8619996 DOI: 10.3390/ijms222212452] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/12/2021] [Accepted: 11/16/2021] [Indexed: 12/12/2022] Open
Abstract
Electronic cigarettes are frequently viewed as a safer alternative to conventional cigarettes; however, evidence to support this perspective has not materialized. Indeed, the current literature reports that electronic cigarette use is associated with both acute lung injury and subclinical dysfunction to the lung and vasculature that may result in pathology following chronic use. E-cigarettes can alter vascular dynamics, polarize innate immune populations towards a proinflammatory state, compromise barrier function in the pulmonary endothelium and epithelium, and promote pre-oncogenic phenomena. This review will summarize the variety of e-cigarette products available to users, discuss current challenges in e-cigarette study design, outline the range of pathologies occurring in cases of e-cigarette associated acute lung injury, highlight disease supporting tissue- and cellular-level changes resulting from e-cigarette exposure, and briefly examine how these changes may promote tumorigenesis. Continued research of the mechanisms by which e-cigarettes induce pathology benefit users and clinicians by resulting in increased regulation of vaping devices, informing treatments for emerging diseases e-cigarettes produce, and increasing public awareness to reduce e-cigarette use and the onset of preventable disease.
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Affiliation(s)
- Hunter T. Snoderly
- Department of Chemical and Biomedical Engineering, Benjamin M. Statler College of Engineering and Mineral Resources, West Virginia University, Morgantown, WV 26506, USA;
- Center for Inhalation Toxicology, School of Medicine, West Virginia University, Morgantown, WV 26506, USA; (T.R.N.); (E.C.B.)
| | - Timothy R. Nurkiewicz
- Center for Inhalation Toxicology, School of Medicine, West Virginia University, Morgantown, WV 26506, USA; (T.R.N.); (E.C.B.)
- Department of Physiology and Pharmacology, School of Medicine, West Virginia University, Morgantown, WV 26506, USA
| | - Elizabeth C. Bowdridge
- Center for Inhalation Toxicology, School of Medicine, West Virginia University, Morgantown, WV 26506, USA; (T.R.N.); (E.C.B.)
- Department of Physiology and Pharmacology, School of Medicine, West Virginia University, Morgantown, WV 26506, USA
| | - Margaret F. Bennewitz
- Department of Chemical and Biomedical Engineering, Benjamin M. Statler College of Engineering and Mineral Resources, West Virginia University, Morgantown, WV 26506, USA;
- Center for Inhalation Toxicology, School of Medicine, West Virginia University, Morgantown, WV 26506, USA; (T.R.N.); (E.C.B.)
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5
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Wang L, Liu LZ, Jiang BH. Dysregulation of microRNAs in metal-induced angiogenesis and carcinogenesis. Semin Cancer Biol 2021; 76:279-286. [PMID: 34428550 DOI: 10.1016/j.semcancer.2021.08.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 08/18/2021] [Accepted: 08/19/2021] [Indexed: 12/19/2022]
Abstract
MicroRNAs (miRNAs) are small endogenous non-coding RNAs that regulate cancer initiation, development, angiogenesis, and therapeutic resistance. Metal exposure widely occurs through air, water, soil, food, and industrial contaminants. Hundreds of millions of people may have metal exposure associated with toxicity, serious health problems, and cancer occurrence. Metal exposure is found to induce oxidative stress, DNA damage and repair, and activation of multiple signaling pathways. However, molecular mechanisms of metal-induced carcinogenesis remain to be elucidated. Recent studies demonstrated that the exposure of metals such as arsenic, hexavalent chromium, cadmium, and nickel caused dysregulation of microRNAs that are implicated to play an important role in cell transformation, tumor growth and angiogenesis. This review focuses on the recent studies that show metal-induced miRNA dysregulation and underlined mechanisms in cell malignant transformation, angiogenesis and tumor growth.
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Affiliation(s)
- Lin Wang
- Academy of Medical Science, Zhengzhou University, Zhengzhou, 450000, China; Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, PA, 19107, United States
| | - Ling-Zhi Liu
- Department of Medical Oncology, Thomas Jefferson University, Philadelphia, PA, 19107, United States.
| | - Bing-Hua Jiang
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, PA, 19107, United States.
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6
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Yang M, Qiu R, Wang W, Liu J, Jin X, Li Y, Li L, Lei B. P2X7 Receptor Antagonist Attenuates Retinal Inflammation and Neovascularization Induced by Oxidized Low-Density Lipoprotein. Oxid Med Cell Longev 2021; 2021:5520644. [PMID: 34457115 PMCID: PMC8397555 DOI: 10.1155/2021/5520644] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 06/28/2021] [Accepted: 08/03/2021] [Indexed: 11/30/2022]
Abstract
Age-related macular degeneration (AMD) is a common and severe blinding disease among people worldwide. Retinal inflammation and neovascularization are two fundamental pathological processes in AMD. Recent studies showed that P2X7 receptor was closely involved in the inflammatory response. Here, we aim to investigate whether A740003, a P2X7 receptor antagonist, could prevent retinal inflammation and neovascularization induced by oxidized low-density lipoprotein (ox-LDL) and explore the underlying mechanisms. ARPE-19 cells and C57BL/6 mice were treated with ox-LDL and A740003 successively for in vitro and in vivo studies. In this research, we found that A740003 suppressed reactive oxygen species (ROS) generation and inhibited the activation of Nod-like receptor pyrin-domain protein 3 (NLRP3) inflammasome and nuclear factor-κB (NF-κB) pathway. A740003 also inhibited the generation of angiogenic factors in ARPE-19 cells and angiogenesis in mice. The inflammatory cytokines and phosphorylation of inhibitor of nuclear factor-κB alpha (IKBα) were repressed by A740003. Besides, ERG assessment showed that retinal functions were remarkably preserved in A740003-treated mice. In summary, our results revealed that the P2X7 receptor antagonist reduced retinal inflammation and neovascularization and protected retinal function. The protective effects were associated with regulation of NLRP3 inflammasome and the NF-κB pathway, as well as inhibition of angiogenic factors.
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MESH Headings
- Animals
- Cytokines/metabolism
- Inflammation/chemically induced
- Inflammation/drug therapy
- Inflammation/metabolism
- Inflammation/pathology
- Lipoproteins, LDL/toxicity
- Male
- Mice
- Mice, Inbred C57BL
- NF-kappa B/genetics
- NF-kappa B/metabolism
- NLR Family, Pyrin Domain-Containing 3 Protein/genetics
- NLR Family, Pyrin Domain-Containing 3 Protein/metabolism
- Neovascularization, Pathologic/chemically induced
- Neovascularization, Pathologic/drug therapy
- Neovascularization, Pathologic/metabolism
- Neovascularization, Pathologic/pathology
- Oxidative Stress
- Purinergic P2X Receptor Antagonists/pharmacology
- Reactive Oxygen Species/metabolism
- Receptors, Purinergic P2X7/chemistry
- Receptors, Purinergic P2X7/metabolism
- Retinitis/chemically induced
- Retinitis/drug therapy
- Retinitis/metabolism
- Retinitis/pathology
- Signal Transduction
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Affiliation(s)
- Mingzhu Yang
- Henan Eye Institute, Henan Eye Hospital, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, Henan 450003, China
| | - Ruiqi Qiu
- Henan Eye Institute, Henan Eye Hospital, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, Henan 450003, China
| | - Weiping Wang
- Henan Eye Institute, Henan Eye Hospital, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, Henan 450003, China
| | - Jingyang Liu
- Henan Eye Institute, Henan Eye Hospital, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, Henan 450003, China
| | - Xiuxiu Jin
- Henan Eye Institute, Henan Eye Hospital, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, Henan 450003, China
| | - Ya Li
- Henan Eye Institute, Henan Eye Hospital, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, Henan 450003, China
| | - Lei Li
- Xinxiang Medical University, Xinxiang, Henan 453003, China
| | - Bo Lei
- Henan Eye Institute, Henan Eye Hospital, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, Henan 450003, China
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7
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Peri S, Biagioni A, Versienti G, Andreucci E, Staderini F, Barbato G, Giovannelli L, Coratti F, Schiavone N, Cianchi F, Papucci L, Magnelli L. Enhanced Vasculogenic Capacity Induced by 5-Fluorouracil Chemoresistance in a Gastric Cancer Cell Line. Int J Mol Sci 2021; 22:ijms22147698. [PMID: 34299320 PMCID: PMC8303918 DOI: 10.3390/ijms22147698] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 07/02/2021] [Accepted: 07/15/2021] [Indexed: 02/07/2023] Open
Abstract
Chemotherapy is still widely used as a coadjutant in gastric cancer when surgery is not possible or in presence of metastasis. During tumor evolution, gatekeeper mutations provide a selective growth advantage to a subpopulation of cancer cells that become resistant to chemotherapy. When this phenomenon happens, patients experience tumor recurrence and treatment failure. Even if many chemoresistance mechanisms are known, such as expression of ATP-binding cassette (ABC) transporters, aldehyde dehydrogenase (ALDH1) activity and activation of peculiar intracellular signaling pathways, a common and universal marker for chemoresistant cancer cells has not been identified yet. In this study we subjected the gastric cancer cell line AGS to chronic exposure of 5-fluorouracil, cisplatin or paclitaxel, thus selecting cell subpopulations showing resistance to the different drugs. Such cells showed biological changes; among them, we observed that the acquired chemoresistance to 5-fluorouracil induced an endothelial-like phenotype and increased the capacity to form vessel-like structures. We identified the upregulation of thymidine phosphorylase (TYMP), which is one of the most commonly reported mutated genes leading to 5-fluorouracil resistance, as the cause of such enhanced vasculogenic ability.
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Affiliation(s)
- Sara Peri
- Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla, 3-50134 Firenze, Italy; (S.P.); (F.S.); (G.B.); (F.C.)
| | - Alessio Biagioni
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, Viale G.B. Morgagni, 50-50134 Firenze, Italy; (A.B.); (G.V.); (E.A.); (L.P.); (L.M.)
| | - Giampaolo Versienti
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, Viale G.B. Morgagni, 50-50134 Firenze, Italy; (A.B.); (G.V.); (E.A.); (L.P.); (L.M.)
| | - Elena Andreucci
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, Viale G.B. Morgagni, 50-50134 Firenze, Italy; (A.B.); (G.V.); (E.A.); (L.P.); (L.M.)
| | - Fabio Staderini
- Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla, 3-50134 Firenze, Italy; (S.P.); (F.S.); (G.B.); (F.C.)
| | - Giuseppe Barbato
- Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla, 3-50134 Firenze, Italy; (S.P.); (F.S.); (G.B.); (F.C.)
| | - Lisa Giovannelli
- Department of Neuroscience, Psychology, Drug Research and Children’s Health, University of Florence, Viale Pieraccini, 6-50139 Firenze, Italy;
| | - Francesco Coratti
- Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla, 3-50134 Firenze, Italy; (S.P.); (F.S.); (G.B.); (F.C.)
| | - Nicola Schiavone
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, Viale G.B. Morgagni, 50-50134 Firenze, Italy; (A.B.); (G.V.); (E.A.); (L.P.); (L.M.)
- Correspondence: (N.S.); (F.C.); Tel.: +39-055-275-1309 (N.S.); +39-055-412-029 (F.C.)
| | - Fabio Cianchi
- Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla, 3-50134 Firenze, Italy; (S.P.); (F.S.); (G.B.); (F.C.)
- Correspondence: (N.S.); (F.C.); Tel.: +39-055-275-1309 (N.S.); +39-055-412-029 (F.C.)
| | - Laura Papucci
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, Viale G.B. Morgagni, 50-50134 Firenze, Italy; (A.B.); (G.V.); (E.A.); (L.P.); (L.M.)
| | - Lucia Magnelli
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, Viale G.B. Morgagni, 50-50134 Firenze, Italy; (A.B.); (G.V.); (E.A.); (L.P.); (L.M.)
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8
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Zhu Z, Hu R, Li J, Xing X, Chen J, Zhou Q, Sun J. Alpinetin exerts anti-inflammatory, anti-oxidative and anti-angiogenic effects through activating the Nrf2 pathway and inhibiting NLRP3 pathway in carbon tetrachloride-induced liver fibrosis. Int Immunopharmacol 2021; 96:107660. [PMID: 33862553 DOI: 10.1016/j.intimp.2021.107660] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 03/23/2021] [Accepted: 04/05/2021] [Indexed: 12/19/2022]
Abstract
Alpinetin is the major active ingredient of Alpiniakatsumadai Hayata. As a kind of novel plant-derived flavonoid, alpinetin has shown potent hepatoprotective effect against many liver diseases such as non-alcoholic fatty liver and lipopolysaccharide/d-Galactosamine-induced liver injury. However, its roles in liver fibrosis remain to be determined. The aim of the current study was to investigate the effect of alpinetin in mice with carbon tetrachloride (CCl4)-induced liver fibrosis, and to elucidate the underlying mechanisms of action. Alpinetin ameliorated the CCl4-induced liver injury and fibrosis in mice, as shown by decreased collagen deposition and the decreased expression of liver fibrosis marker proteins. Alpinetin suppressed the inflammation and oxidative stress in fibrotic livers of mice, as evidenced by decreased levels of proinflammatory factors, the decreased reactive oxygen species (ROS) and malondialdehyde (MDA) levels, and the increased activities of antioxidant enzymes. In addition, alpinetin attenuated the angiogenesis in fibrotic livers of the test animals. Mechanistically, alpinetin inhibited the CCl4-induced expression of NLRP3, ASC, cleaved caspase-1, mature (cleaved-) IL-1β, and IL-18 in livers of mice. Furthermore, alpinetin resulted in an increased in the nuclear expression and a decrease in the cytoplasmic expression of Nrf2, as well as increased protein expression of downstream target enzymes, GCLC, HO-1, NQO1, and GCLM, thus exerting the antioxidant effect. Overall, these findings suggested that the anti-fibrotic effect of alpinetin can be attributed to the inhibition of NLRP3-mediated anti-inflammatory activities and Nrf2-mediated anti-oxidative activities, in addition to the decrement of hepatic angiogenesis.
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Affiliation(s)
- Zhiheng Zhu
- Department of General Surgery, Affiliated Maternity and Child Health Care Hospital of Nantong University, Nantong 226018, China
| | - Renyue Hu
- Medical School of Nantong University, 19 Qixiu Road, Nantong 226001, China
| | - Jidan Li
- Department of General Surgery, Affiliated Maternity and Child Health Care Hospital of Nantong University, Nantong 226018, China
| | - Xiaoxiao Xing
- Department of General Surgery, Affiliated Maternity and Child Health Care Hospital of Nantong University, Nantong 226018, China
| | - Jianxin Chen
- Department of General Surgery, Affiliated Maternity and Child Health Care Hospital of Nantong University, Nantong 226018, China
| | - Qi Zhou
- Department of Operating Room, Affiliated Maternity and Child Health Care Hospital of Nantong University, Nantong 226018, China.
| | - Jingjun Sun
- Department of General Surgery, Affiliated Maternity and Child Health Care Hospital of Nantong University, Nantong 226018, China.
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Tang CT, Zhang QW, Wu S, Tang MY, Liang Q, Lin XL, Gao YJ, Ge ZZ. Thalidomide targets EGFL6 to inhibit EGFL6/PAX6 axis-driven angiogenesis in small bowel vascular malformation. Cell Mol Life Sci 2020; 77:5207-5221. [PMID: 32008086 PMCID: PMC7671996 DOI: 10.1007/s00018-020-03465-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 01/08/2020] [Accepted: 01/14/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Small bowel vascular malformation disease (SBVM) is the most common cause of obscure gastrointestinal bleeding (OGIB). Several studies suggested that EGFL6 was able to promote the growth of tumor endothelial cells by forming tumor vessels. To date, it remains unclear how EGFL6 promotes pathological angiogenesis in SBVM and whether EGFL6 is a target of thalidomide. METHODS We took advantage of SBVM plasma and tissue samples and compared the expression of EGFL6 between SBVM patients and healthy people via ELISA and Immunohistochemistry. We elucidated the underlying function of EGFL6 in SBVM in vitro and by generating a zebrafish model that overexpresses EGFL6, The cycloheximide (CHX)-chase experiment and CoIP assays were conducted to demonstrate that thalidomide can promote the degradation of EGFL6 by targeting CRBN. RESULTS The analysis of SBVM plasma and tissue samples revealed that EGFL6 was overexpressed in the patients compared to healthy people. Using in vitro and in vivo assays, we demonstrated that an EMT pathway triggered by the EGFL6/PAX6 axis is involved in the pathogenesis of SBVM. Furthermore, through in vitro and in vivo assays, we elucidated that thalidomide can function as anti-angiogenesis medicine through the regulation of EGFL6 in a proteasome-dependent manner. Finally, we found that CRBN can mediate the effect of thalidomide on EGFL6 expression and that the CRBN protein interacts with EGFL6 via a Lon N-terminal peptide. CONCLUSION Our findings revealed a key role for EGFL6 in SBVM pathogenesis and provided a mechanism explaining why thalidomide can cure small bowel bleeding resulting from SBVM.
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Affiliation(s)
- Chao-Tao Tang
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, 200001, China
| | - Qing-Wei Zhang
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, 200001, China
| | - Shan Wu
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, 200001, China
| | - Ming-Yu Tang
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, 200001, China
| | - Qian Liang
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, 200001, China
| | - Xiao-Lu Lin
- Department of Digestive Endoscopy, Provincial Clinic Medical College, Fujian Medical University, Fujian Provincial Hospital, Fuzhou, 350001, China
| | - Yun-Jie Gao
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, 200001, China
| | - Zhi-Zheng Ge
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, 200001, China.
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10
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Little K, Llorián-Salvador M, Tang M, Du X, Marry S, Chen M, Xu H. Macrophage to myofibroblast transition contributes to subretinal fibrosis secondary to neovascular age-related macular degeneration. J Neuroinflammation 2020; 17:355. [PMID: 33239022 PMCID: PMC7690191 DOI: 10.1186/s12974-020-02033-7] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 11/11/2020] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Macular fibrosis causes irreparable vision loss in neovascular age-related macular degeneration (nAMD) even with anti-vascular endothelial growth factor (VEGF) therapy. Inflammation is known to play an important role in macular fibrosis although the underlying mechanism remains poorly defined. The aim of this study was to understand how infiltrating macrophages and complement proteins may contribute to macular fibrosis. METHODS Subretinal fibrosis was induced in C57BL/6J mice using the two-stage laser protocol developed by our group. The eyes were collected at 10, 20, 30 and 40 days after the second laser and processed for immunohistochemistry for infiltrating macrophages (F4/80 and Iba-1), complement components (C3a and C3aR) and fibrovascular lesions (collagen-1, Isolectin B4 and α-SMA). Human retinal sections with macular fibrosis were also used in the study. Bone marrow-derived macrophages (BMDMs) from C57BL/6J mice were treated with recombinant C3a, C5a or TGF-β for 48 and 96 h. qPCR, Western blot and immunohistochemistry were used to examine the expression of myofibroblast markers. The involvement of C3a-C3aR pathway in macrophage to myofibroblast transition (MMT) and subretinal fibrosis was further investigated using a C3aR antagonist (C3aRA) and a C3a blocking antibody in vitro and in vivo. RESULTS Approximately 20~30% of F4/80+ (or Iba-1+) infiltrating macrophages co-expressed α-SMA in subretinal fibrotic lesions both in human nAMD eyes and in the mouse model. TGF-β and C3a, but not C5a treatment, significantly upregulated expression of α-SMA, fibronectin and collagen-1 in BMDMs. C3a-induced upregulation of α-SMA, fibronectin and collagen-1 in BMDMs was prevented by C3aRA treatment. In the two-stage laser model of induced subretinal fibrosis, treatment with C3a blocking antibody but not C3aRA significantly reduced vascular leakage and Isolectin B4+ lesions. The treatment did not significantly alter collagen-1+ fibrotic lesions. CONCLUSIONS MMT plays a role in macular fibrosis secondary to nAMD. MMT can be induced by TGF-β and C3a but not C5a. Further research is required to fully understand the role of MMT in macular fibrosis. Macrophage to myofibroblast transition (MMT) contributes to subretinal fibrosis. Subretinal fibrosis lesions contain various cell types, including macrophages and myofibroblasts, and are fibrovascular. Myofibroblasts are key cells driving pathogenic fibrosis, and they do so by producing excessive amount of extracellular matrix proteins. We have found that infiltrating macrophages can transdifferentiate into myofibroblasts, a phenomenon termed macrophage to myofibroblast transition (MMT) in macular fibrosis. In addition to TGF-β1, C3a generated during complement activation in CNV can also induce MMT contributing to macular fibrosis. RPE = retinal pigment epithelium. BM = Bruch's membrane. MMT = macrophage to myofibroblast transition. TGFB = transforming growth factor β. a-SMA = alpha smooth muscle actin. C3a = complement C3a.
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Affiliation(s)
- Karis Little
- The Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Maria Llorián-Salvador
- The Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Miao Tang
- The Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Xuan Du
- The Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Stephen Marry
- The Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Mei Chen
- The Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Heping Xu
- The Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK.
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11
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Ibuki M, Lee D, Shinojima A, Miwa Y, Tsubota K, Kurihara T. Rice Bran and Vitamin B6 Suppress Pathological Neovascularization in a Murine Model of Age-Related Macular Degeneration as Novel HIF Inhibitors. Int J Mol Sci 2020; 21:ijms21238940. [PMID: 33255657 PMCID: PMC7728083 DOI: 10.3390/ijms21238940] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 11/24/2020] [Accepted: 11/24/2020] [Indexed: 02/07/2023] Open
Abstract
Pathological neovascularization in the eye is a leading cause of blindness in all age groups from retinopathy of prematurity (ROP) in children to age-related macular degeneration (AMD) in the elderly. Inhibiting neovascularization via antivascular endothelial growth factor (VEGF) drugs has been used for the effective treatment. However, anti-VEGF therapies may cause development of chorioretinal atrophy as they affect a physiological amount of VEGF essential for retinal homeostasis. Furthermore, anti-VEGF therapies are still ineffective in some cases, especially in patients with AMD. Hypoxia-inducible factor (HIF) is a strong regulator of VEGF induction under hypoxic and other stress conditions. Our previous reports have indicated that HIF is associated with pathological retinal neovascularization in murine models of ROP and AMD, and HIF inhibition suppresses neovascularization by reducing an abnormal increase in VEGF expression. Along with this, we attempted to find novel effective HIF inhibitors from natural foods of our daily lives. Food ingredients were screened for prospective HIF inhibitors in ocular cell lines of 661W and ARPE-19, and a murine AMD model was utilized for examining suppressive effects of the ingredients on retinal neovascularization. As a result, rice bran and its component, vitamin B6 showed inhibitory effects on HIF activation and suppressed VEGF mRNA induction under a CoCl2-induced pseudo-hypoxic condition. Dietary supplement of these significantly suppressed retinal neovascularization in the AMD model. These data suggest that rice bran could have promising therapeutic values in the management of pathological ocular neovascularization.
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Affiliation(s)
- Mari Ibuki
- Laboratory of Photobiology, Keio University School of Medicine, Tokyo 160-8582, Japan; (M.I.); (D.L.); (A.S.); (Y.M.)
- Department of Ophthalmology, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Deokho Lee
- Laboratory of Photobiology, Keio University School of Medicine, Tokyo 160-8582, Japan; (M.I.); (D.L.); (A.S.); (Y.M.)
- Department of Ophthalmology, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Ari Shinojima
- Laboratory of Photobiology, Keio University School of Medicine, Tokyo 160-8582, Japan; (M.I.); (D.L.); (A.S.); (Y.M.)
- Department of Ophthalmology, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Yukihiro Miwa
- Laboratory of Photobiology, Keio University School of Medicine, Tokyo 160-8582, Japan; (M.I.); (D.L.); (A.S.); (Y.M.)
- Department of Ophthalmology, Keio University School of Medicine, Tokyo 160-8582, Japan
- Animal Eye Care•Tokyo Animal Eye Clinic, Tokyo 158-0093, Japan
| | - Kazuo Tsubota
- Department of Ophthalmology, Keio University School of Medicine, Tokyo 160-8582, Japan
- Tsubota Laboratory, Inc., Tokyo 160-0016, Japan
- Correspondence: (K.T.); (T.K.); Tel.: +81-3-5636-3269 (K.T.); +81-3-5636-3204 (T.K.)
| | - Toshihide Kurihara
- Laboratory of Photobiology, Keio University School of Medicine, Tokyo 160-8582, Japan; (M.I.); (D.L.); (A.S.); (Y.M.)
- Department of Ophthalmology, Keio University School of Medicine, Tokyo 160-8582, Japan
- Correspondence: (K.T.); (T.K.); Tel.: +81-3-5636-3269 (K.T.); +81-3-5636-3204 (T.K.)
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12
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Sun Y, Zhao Z, Zhang H, Li J, Chen J, Luan X, Min W, He Y. The interaction of lead exposure and CCM3 defect plays an important role in regulating angiogenesis through eNOS/NO pathway. Environ Toxicol Pharmacol 2020; 79:103407. [PMID: 32512318 DOI: 10.1016/j.etap.2020.103407] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 04/14/2020] [Accepted: 05/03/2020] [Indexed: 06/11/2023]
Abstract
In this study, we aimed to explore the role of nitric oxide (NO) in regulating angiogenesis in cerebral cavernous malformations 3 gene (CCM3)-deficient mice exposed to lead during vascular development; further, we aimed to identify and study the potential mechanism involved as well. Angiogenesis was detected by whole mount immunofluorescent staining of retinal vessels in WT and CCM3+/- mice. Brain microvascular endothelial cells (BMECs) isolated from WT and CCM3+/- mice, primary HUVECs, and immortalized HUVECs (imHUVECs) (CCM3+/+ and CCM3-/-) were used and treated with lead acetate (PbAc). RT-PCR and Western blotting were used to detect the mRNA and protein expression of iNOS, eNOS, and VEGF genes. The results showed that both lead exposure and CCM3 gene deficiency adversely affected endothelial cell function, causing abnormal angiogenesis and vascular remodeling. The mRNA expression of eNOS and iNOS was significantly different in WT and CCM3+/- BMECs (0.04 ± 0.001 vs. 0.016 ± 0.002; 0.26 ± 0.002 vs. 0.306 ± 0.002, respectively), and the expression of eNOS and iNOS in imHUVECs (CCM3+/+ and CCM3-/-) also increased after PbAc exposure. In conclusion, CCM3 gene-deficient mice were more susceptible to abnormal vascular development after low-level lead exposure, probably due to the release of NO.
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Affiliation(s)
- Yi Sun
- Department of Health Toxicology, Sun Yat-sen University School of Public Health, Guangzhou, Guangdong, 510080, China; Department of Environmental Health and Occupational Medicine, Guilin Medical University School of Public Health, Guilin, Guangxi, 541004, China
| | - Zhiqiang Zhao
- Department of Health Toxicology, Sun Yat-sen University School of Public Health, Guangzhou, Guangdong, 510080, China
| | - Haifeng Zhang
- Department of Pathology, Yale University School of Medicine, New Haven, CT, 06510, USA
| | - Jiong Li
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
| | - Jingli Chen
- Department of Health Toxicology, Sun Yat-sen University School of Public Health, Guangzhou, Guangdong, 510080, China
| | - Xiaoyi Luan
- Department of Environmental Health and Occupational Medicine, Guilin Medical University School of Public Health, Guilin, Guangxi, 541004, China
| | - Wang Min
- Department of Pathology, Yale University School of Medicine, New Haven, CT, 06510, USA
| | - Yun He
- Department of Health Toxicology, Sun Yat-sen University School of Public Health, Guangzhou, Guangdong, 510080, China.
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13
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Chen HJ, Zhang WX, Hu L, Fan J, Zhang L, Yan YE. Maternal nicotine exposure enhances adipose tissue angiogenic activity in offspring: Sex and age differences. Toxicology 2020; 441:152506. [PMID: 32512034 DOI: 10.1016/j.tox.2020.152506] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 05/19/2020] [Accepted: 06/02/2020] [Indexed: 01/02/2023]
Abstract
Maternal nicotine exposure during pregnancy and lactation (NIC) is associated with dysfunction of white adipose tissue (WAT). We focused on the NIC-induced WAT angiogenesis and explored its sex and age differences. Pregnant rats were randomly assigned to NIC (1.0 mg/kg nicotine twice per day) or control groups. Distribution and density of blood vessels were observed. Angiogenesis-related genes were tested at 4, 12 and 26 weeks to estimate angiogenic activity. In vitro, nicotine concentration- and time-response experiments (0-50 μM) were conducted in 3T3-L1. Lipid accumulation and angiogenesis-related genes were tested. NIC increased the blood vessels in inguinal subcutaneous WAT (igSWAT) and gonadal WAT (gWAT) of 26-week-aged male and 4-week-aged female offspring. In males, nicotine showed higher angiogenic activity at 26 weeks than at 4 weeks in igSWAT and gWAT. In females, nicotine's angiogenic activity was higher at 4 weeks than 26 weeks in igSWAT and gWAT. In vitro, nicotine promoted adipocyte differentiation, and increased the expression of angiogenesis-related genes in concentration- and time dependent manners. In conclusion, NIC-induced enhancement of angiogenic activity in WAT presented sex and age differences: nicotine showed higher angiogenic activity in adulthood than in childhood of male offspring, but the converse results were observed in female offspring.
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Affiliation(s)
- Hui-Jian Chen
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, 185, DongHu Road, Wuhan, 430071, China
| | - Wan-Xia Zhang
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, 185, DongHu Road, Wuhan, 430071, China
| | - Li Hu
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, 185, DongHu Road, Wuhan, 430071, China
| | - Jie Fan
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, 185, DongHu Road, Wuhan, 430071, China
| | - Li Zhang
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, 185, DongHu Road, Wuhan, 430071, China
| | - You-E Yan
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, 185, DongHu Road, Wuhan, 430071, China.
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14
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Dickson MA, Peterson N, McRae KE, Pudwell J, Tayade C, Smith GN. Carbon monoxide increases utero-placental angiogenesis without impacting pregnancy specific adaptations in mice. Reprod Biol Endocrinol 2020; 18:49. [PMID: 32408878 PMCID: PMC7227344 DOI: 10.1186/s12958-020-00594-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Accepted: 04/22/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Cigarette smokers have a reduced risk of developing preeclampsia, possibly attributed to an increase in carbon monoxide (CO) levels. Carbon monoxide is a gasotransmitter that has been implicated in maintaining vascular tone, increasing angiogenesis, and reducing inflammation and apoptosis at physiological concentrations. Moderately increasing CO concentrations may have therapeutic potential to prevent or treat preeclampsia; however, the effects of CO on pregnancy are under studied. Our objective was to investigate the effect of CO on major angiogenic and inflammatory markers in pregnancy, and to evaluate the effect of CO on indicators of placental health. FINDINGS Pregnant CD-1 mice were constantly exposed to either ambient air or 250 ppm CO from conception until gestation day (GD)10.5 or GD16.5. Using a qRT-PCR array, we identified that CO increased expression of major angiogenic genes at the implantation site on GD10.5, but not GD16.5. Pro-inflammatory cytokines in the plasma and tissue lysates from implantation sites in treated mice were not significantly different compared to controls. Additionally, CO did not alter the implantation site phenotype, in terms of proliferative capacity, invasiveness of trophoblasts, or abundance of uterine natural killer cells. CONCLUSIONS This study suggests that CO exposure is pro-angiogenic at the maternal-fetal interface, and is not associated with demonstrable concerns during murine pregnancy. Future studies are required to validate safety and efficacy of CO as a potential therapeutic for vascular insufficiency diseases such as preeclampsia and intrauterine growth restriction.
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Affiliation(s)
- Megan A. Dickson
- Department of Biomedical and Molecular Sciences, Queen’s University, Kingston, ON K7L 3N6 Canada
| | - Nichole Peterson
- Department of Biomedical and Molecular Sciences, Queen’s University, Kingston, ON K7L 3N6 Canada
| | - Karalyn E. McRae
- Department of Biomedical and Molecular Sciences, Queen’s University, Kingston, ON K7L 3N6 Canada
| | - Jessica Pudwell
- Department of Obstetrics and Gynaecology, Queen’s University, Kingston Health Sciences Centre, 76 Stuart St, Kingston, K7L 2V7 Canada
| | - Chandrakant Tayade
- Department of Biomedical and Molecular Sciences, Queen’s University, Kingston, ON K7L 3N6 Canada
| | - Graeme N. Smith
- Department of Biomedical and Molecular Sciences, Queen’s University, Kingston, ON K7L 3N6 Canada
- Department of Obstetrics and Gynaecology, Queen’s University, Kingston Health Sciences Centre, 76 Stuart St, Kingston, K7L 2V7 Canada
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15
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Waqas M, Qamar H, Zhang J, Yao W, Li A, Wang Y, Iqbal M, Mehmood K, Jiang X, Li J. Puerarin enhance vascular proliferation and halt apoptosis in thiram-induced avian tibial dyschondroplasia by regulating HIF-1α, TIMP-3 and BCL-2 expressions. Ecotoxicol Environ Saf 2020; 190:110126. [PMID: 31918251 DOI: 10.1016/j.ecoenv.2019.110126] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 12/18/2019] [Accepted: 12/21/2019] [Indexed: 06/10/2023]
Abstract
Tetramethyl thiuram disulfide (thiram) is a dithiocarbamate pesticide used for crop protection and storage. But, it's widespread utilization is associated with deleterious growth plate cartilage disorder in broilers termed as avian tibial dyschondroplasia (TD). TD results in non-mineralized and less vascularized proximal tibial growth plate cartilage causing lameness and poor growth performance. This study investigated the therapeutic potential of puerarin against thiram toxicity in TD affected chickens. One-day-old broiler chickens (n = 240) were alienated into three equal groups i.e. control, TD and puerarin (n = 80) and were offered standard feed. Additionally, TD and puerarin groups were offered thiram at 50 mg/kg of feed from 4 to 7 days for TD induction followed by puerarin therapy at 120 mg/kg to puerarin group only from 8 to 18 days for TD treatment. Thiram feeding to TD and puerarin group chickens caused lameness, mortality, and increased the aspartate aminotransferase (AST), alanine aminotransferase (ALT), malondialdehyde (MDA) levels and growth plate (GP) size and upregulated HIF-1α expression. Besides, the production parameters, alkaline phosphatase (ALP), superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) levels and the expressions of TIMP-3 and BCL-2 were decreased (p < 0.05). Puerarin alleviated lameness, enhanced angiogenesis and growth performance and serum and antioxidant enzymes, decreased apoptosis and recuperated GP width by significantly downregulating HIF-1α and upregulating the TIMP-3 and BCL-2 mRNA and protein expressions in puerarin group chickens (p < 0.05). In conclusion, the toxic effects associated with thiram can be mitigated using puerarin.
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Affiliation(s)
- Muhammad Waqas
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, PR China; Faculty of Veterinary & Animal Sciences, University of the Poonch, Rawalakot, District Poonch, 12350, Azad Jammu & Kashmir, Pakistan
| | - Hammad Qamar
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, PR China
| | - Jialu Zhang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, PR China
| | - Wangyuan Yao
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, PR China
| | - Aoyun Li
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, PR China
| | - Yaping Wang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, PR China
| | - Mudassar Iqbal
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, PR China; University College of Veterinary & Animal Sciences, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Khalid Mehmood
- University College of Veterinary & Animal Sciences, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Xiong Jiang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, PR China
| | - Jiakui Li
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, PR China; College of Animal Husbandry and Veterinary Medicine, Tibet Agricultural and Animal Husbandry University, Linzhi, 860000, China.
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16
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Guarischi-Sousa R, Monteiro JS, Alecrim LC, Michaloski JS, Cardeal LB, Ferreira EN, Carraro DM, Nunes DN, Dias-Neto E, Reimand J, Boutros PC, Setubal JC, Giordano RJ. A transcriptome-based signature of pathological angiogenesis predicts breast cancer patient survival. PLoS Genet 2019; 15:e1008482. [PMID: 31846472 PMCID: PMC6917213 DOI: 10.1371/journal.pgen.1008482] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 10/15/2019] [Indexed: 12/30/2022] Open
Abstract
The specific genes and molecules that drive physiological angiogenesis differ from those involved in pathological angiogenesis, suggesting distinct mechanisms for these seemingly related processes. Unveiling genes and pathways preferentially associated with pathologic angiogenesis is key to understanding its mechanisms, thereby facilitating development of novel approaches to managing angiogenesis-dependent diseases. To better understand these different processes, we elucidated the transcriptome of the mouse retina in the well-accepted oxygen-induced retinopathy (OIR) model of pathological angiogenesis. We identified 153 genes changed between normal and OIR retinas, which represent a molecular signature relevant to other angiogenesis-dependent processes such as cancer. These genes robustly predict the survival of breast cancer patients, which was validated in an independent 1,000-patient test cohort (40% difference in 15-year survival; p = 2.56 x 10-21). These results suggest that the OIR model reveals key genes involved in pathological angiogenesis, and these may find important applications in stratifying tumors for treatment intensification or for angiogenesis-targeted therapies.
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Affiliation(s)
- Rodrigo Guarischi-Sousa
- Biochemistry Department, Institute of Chemistry, University of São Paulo, São Paulo, Brazil
- Computational Biology Program, Ontario Institute for Cancer Research, Toronto, Ontario, Canada
| | - Jhonatas S. Monteiro
- Biochemistry Department, Institute of Chemistry, University of São Paulo, São Paulo, Brazil
| | - Lilian C. Alecrim
- Biochemistry Department, Institute of Chemistry, University of São Paulo, São Paulo, Brazil
| | - Jussara S. Michaloski
- Biochemistry Department, Institute of Chemistry, University of São Paulo, São Paulo, Brazil
| | - Laura B. Cardeal
- Biochemistry Department, Institute of Chemistry, University of São Paulo, São Paulo, Brazil
| | - Elisa N. Ferreira
- International Research Center (CIPE) A.C. Camargo Cancer Center, São Paulo, SP, Brazil
| | - Dirce M. Carraro
- International Research Center (CIPE) A.C. Camargo Cancer Center, São Paulo, SP, Brazil
| | - Diana N. Nunes
- International Research Center (CIPE) A.C. Camargo Cancer Center, São Paulo, SP, Brazil
| | - Emmanuel Dias-Neto
- International Research Center (CIPE) A.C. Camargo Cancer Center, São Paulo, SP, Brazil
- Laboratory of Neurosciences (LIM27), Institute & Department of Psychiatry, University of São Paulo, São Paulo, Brazil
| | - Jüri Reimand
- Computational Biology Program, Ontario Institute for Cancer Research, Toronto, Ontario, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Paul C. Boutros
- Department of Human Genetics, University of California Los Angeles (UCLA), Los Angeles, CA, United States of America
- * E-mail: (PCB); (JCS); (RJG)
| | - João C. Setubal
- Biochemistry Department, Institute of Chemistry, University of São Paulo, São Paulo, Brazil
- * E-mail: (PCB); (JCS); (RJG)
| | - Ricardo J. Giordano
- Biochemistry Department, Institute of Chemistry, University of São Paulo, São Paulo, Brazil
- * E-mail: (PCB); (JCS); (RJG)
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Latteyer S, Christoph S, Theurer S, Hönes GS, Schmid KW, Führer D, Moeller LC. Thyroxine promotes lung cancer growth in an orthotopic mouse model. Endocr Relat Cancer 2019; 26:565-574. [PMID: 30893642 DOI: 10.1530/erc-18-0353] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 03/20/2019] [Indexed: 12/30/2022]
Abstract
Thyroid hormones are important for physiology and homeostasis. In addition to nuclear thyroid hormone receptors, the plasma membrane protein integrin αvβ3 has been recognized as a receptor for both thyroxine (T4) and triiodothyronine (T3). Here, we studied whether thyroid hormone promotes growth of murine lung cancer via αvβ3 in vivo. Murine Lewis lung carcinoma cells (3LL), stably transfected with luciferase, were injected into mouse lungs. Tumor growth in untreated mice was compared to hypothyroid mice and hypothyroid mice treated with T3 or T4 with or without the αvβ3 inhibitor 3,5,3',5'-tetraiodothyroacetic acid (Tetrac). Tumor progression was determined by serial in vivo imaging of bioluminescence emitted from the tumor. Tumor weight was recorded at the end of the experiment. Neoangiogenesis was determined by immunohistochemistry for CD31. Tumor growth was reduced in hypothyroidism and increased by T4 treatment. Strikingly, only T4 but not T3 treatment promoted tumor growth. This T4 effect was abrogated by the αvβ3 inhibitor Tetrac. Tumor weight and neoangiogenesis were also significantly increased only in T4-treated mice. The T4 effect on tumor weight and neoangiogenesis was abolished by Tetrac. In vitro, T4 did not stimulate 3LL cell proliferation or signaling pathway activation. We conclude that T4 promotes lung cancer growth in this orthotopic mouse model. The tumor-promoting effect is mediated via the plasma membrane integrin αvβ3 and increased neoangiogenesis rather than direct stimulation of 3LL cells. These data suggest that such effects of levothyroxine may need to be considered in cancer patients on T4 substitution.
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Affiliation(s)
- S Latteyer
- Department of Endocrinology, Diabetes and Metabolism, University of Duisburg-Essen, Essen, Germany
| | - S Christoph
- Clinic for Bone Marrow Transplants, University of Duisburg-Essen, Essen, Germany
| | - S Theurer
- Institute of Pathology, University of Duisburg-Essen, Essen, Germany
| | - G S Hönes
- Department of Endocrinology, Diabetes and Metabolism, University of Duisburg-Essen, Essen, Germany
| | - K W Schmid
- Institute of Pathology, University of Duisburg-Essen, Essen, Germany
| | - D Führer
- Department of Endocrinology, Diabetes and Metabolism, University of Duisburg-Essen, Essen, Germany
| | - L C Moeller
- Department of Endocrinology, Diabetes and Metabolism, University of Duisburg-Essen, Essen, Germany
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18
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Tang E, Wang Y, Liu T, Yan B. Gastrin promotes angiogenesis by activating HIF-1α/β-catenin/VEGF signaling in gastric cancer. Gene 2019; 704:42-48. [PMID: 30980943 DOI: 10.1016/j.gene.2019.04.029] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 04/06/2019] [Accepted: 04/09/2019] [Indexed: 01/27/2023]
Abstract
Angiogenesis is recognized as a sign of cancer and facilitates cancer progression and metastasis. Suppression of angiogenesis is a desirable strategy for gastric cancer (GC) management. In this study, we showed a novel role of gastrin in angiogenesis of GC. We observed that treatment with gastrin 17 (G17) increased the proliferation of AGS cells and enhanced tube formation during normoxia and hypoxia. The expression level of VEGF were increased by G17 treatment as well. Experiments on the mechanism showed that G17 promoted HIF-1α expression, which subsequently enhanced β-catenin nuclear localization and activation of TCF3 and LEF1 and finally resulted in angiogenesis by upregulating VEGF. An in vivo experiment confirmed that G17 enhanced GC cell proliferation and angiogenesis in the resultant tumor. In conclusion, our findings indicate that gastrin promotes angiogenesis via activating HIF-1α/β-catenin/VEGF axis in GC.
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Affiliation(s)
- E Tang
- Department of Gastroenterology, Qingpu Branch of Zhongshan Hospital, Fudan University, Shanghai 201700, China
| | - Yongfeng Wang
- Department of General Surgery, Qingpu Branch of Zhongshan Hospital, Fudan University, Shanghai 201700, China
| | - Tiemei Liu
- Department of Gastroenterology, Endoscopy Center, Qingpu Branch of Zhongshan Hospital, Fudan University, Shanghai 201700, China.
| | - Bin Yan
- Department of General Surgery, Qingpu Branch of Zhongshan Hospital, Fudan University, Shanghai 201700, China.
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Mehmood K, Zhang H, Jiang X, Yao W, Tong X, Iqbal MK, Rehman MU, Iqbal M, Waqas M, Qamar H, Zhang J, Li J. Ligustrazine recovers thiram-induced tibial dyschondroplasia in chickens: Involvement of new molecules modulating integrin beta 3. Ecotoxicol Environ Saf 2019; 168:205-211. [PMID: 30388538 DOI: 10.1016/j.ecoenv.2018.10.080] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 10/19/2018] [Accepted: 10/22/2018] [Indexed: 06/08/2023]
Abstract
Tetramethyl thiuram disulfide (thiram) is a dithiocarbamate, which is extensively used in agriculture as pesticide and fungicide for treating grains intended for seed purposes and also for storing food grains. One of the most evident and detrimental effect produced by thiram is tibial dyschondroplasia (TD) in many avian species, by feeding diets containing thiram, a growth plate cartilage disease. TD is characterized by the lack of blood vessels and impaired vascular invasion of the hypertrophic chondrocyte resulting in the massive cell death. This study investigated the effects of ligustrazine on the treatment and control of thiram induced-TD. A total of 210 chicks were divided into three equal groups (n = 70): control group (received standard diet), TD group (feed on thiram containing diet from day 3-7), and ligustrazine group (feed on thiram containing diet from day 3-7 and after that ligustrazine @ 30 mg/kg from day 8 to day 18). During the experiment, the lameness, production parameters, tibia bone indicators, pathological index changes and integrin beta 3 (ITGB3) expressions were examined. The results reveal that ligustrazine plays an important role in improving angiogenesis and decreasing chondrocytes damage in TD chicks via a new molecule modulating ITGB3. So, the administration of ligustrazine can be an important way to cope with the losses and costs associated with TD in commercial poultry farming and animal welfare issue due to environmental contamination of thiram.
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Affiliation(s)
- Khalid Mehmood
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, PR China; University College of Veterinary & Animal Sciences, Islamia University of Bahawalpur, 63100, Pakistan
| | - Hui Zhang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Xiong Jiang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, PR China; Hubei Three Gorges Polytechnic, Yichang 443000, Hubei, PR China
| | - Wangyuan Yao
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Xiaole Tong
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Muhammad Kashif Iqbal
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Mujeeb Ur Rehman
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Mujahid Iqbal
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Muhammad Waqas
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, PR China; Faculty of Veterinary & Animal Sciences, University of the Poonch, Rawalakot, District Poonch, 12350 Azad Jammu & Kashmir, Pakistan
| | - Hammad Qamar
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Jialu Zhang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Jiakui Li
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, PR China; College of Animals Husbandry and Veterinary Medicine, Tibet Agricultural and Animal Husbandry University, Linzhi, Tibet 860000, PR China.
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20
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Iizuka N, Morita A, Kawano C, Mori A, Sakamoto K, Kuroyama M, Ishii K, Nakahara T. Anti-angiogenic effects of valproic acid in a mouse model of oxygen-induced retinopathy. J Pharmacol Sci 2018; 138:203-208. [PMID: 30409713 DOI: 10.1016/j.jphs.2018.10.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 09/20/2018] [Accepted: 10/10/2018] [Indexed: 11/19/2022] Open
Abstract
Pathological retinal angiogenesis contributes to the pathogenesis of several ocular diseases. Valproic acid, a widely used antiepileptic drug, exerts anti-angiogenic effects by inhibiting histone deacetylase (HDAC). Herein, we investigated the effects of valproic acid and vorinostat, a HDAC inhibitor, on pathological retinal angiogenesis in mice with oxygen-induced retinopathy (OIR). OIR was induced in neonatal mice by exposure to 80% oxygen from postnatal day (P) 7 to P10 and to atmospheric oxygen from P10 to P15. Mice were subcutaneously injected with valproic acid, vorinostat, or vehicle once a day from P10 to P14. At P15, retinal neovascular tufts and vascular growth in the central avascular zone were observed in mice with OIR. Additionally, immunoreactivity for phosphorylated ribosomal protein S6 (pS6), an indicator of mammalian target of rapamycin (mTOR) activity, was detected in the neovascular tufts. Both valproic acid and vorinostat reduced the formation of retinal neovascular tuft without affecting vascular growth in the central avascular zone. Valproic acid reduced the pS6 immunoreactivity in neovascular tufts. Given that vascular endothelial growth factor (VEGF) activates mTOR-dependent pathways in proliferating endothelial cells of the neonatal mouse retina, these results suggest that valproic acid suppresses pathological retinal angiogenesis by interrupting VEGF-mTOR pathways.
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Affiliation(s)
- Naoto Iizuka
- Department of Molecular Pharmacology, Kitasato University School of Pharmaceutical Sciences, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan; Pharmacy Practice and Science II (Kitasato University East Hospital), Kitasato University School of Pharmaceutical Sciences, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Akane Morita
- Department of Molecular Pharmacology, Kitasato University School of Pharmaceutical Sciences, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Chihiro Kawano
- Pharmacy Practice and Science II (Kitasato University East Hospital), Kitasato University School of Pharmaceutical Sciences, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Asami Mori
- Department of Molecular Pharmacology, Kitasato University School of Pharmaceutical Sciences, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Kenji Sakamoto
- Department of Molecular Pharmacology, Kitasato University School of Pharmaceutical Sciences, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Masakazu Kuroyama
- Pharmacy Practice and Science II (Kitasato University East Hospital), Kitasato University School of Pharmaceutical Sciences, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Kunio Ishii
- Department of Molecular Pharmacology, Kitasato University School of Pharmaceutical Sciences, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Tsutomu Nakahara
- Department of Molecular Pharmacology, Kitasato University School of Pharmaceutical Sciences, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan.
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21
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Zhang Y, Zheng D, Zhou T, Song H, Hulsurkar M, Su N, Liu Y, Wang Z, Shao L, Ittmann M, Gleave M, Han H, Xu F, Liao W, Wang H, Li W. Androgen deprivation promotes neuroendocrine differentiation and angiogenesis through CREB-EZH2-TSP1 pathway in prostate cancers. Nat Commun 2018; 9:4080. [PMID: 30287808 PMCID: PMC6172226 DOI: 10.1038/s41467-018-06177-2] [Citation(s) in RCA: 126] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 08/20/2018] [Indexed: 01/19/2023] Open
Abstract
The incidence of aggressive neuroendocrine prostate cancers (NEPC) related to androgen-deprivation therapy (ADT) is rising. NEPC is still poorly understood, such as its neuroendocrine differentiation (NED) and angiogenic phenotypes. Here we reveal that NED and angiogenesis are molecularly connected through EZH2 (enhancer of zeste homolog 2). NED and angiogenesis are both regulated by ADT-activated CREB (cAMP response element-binding protein) that in turn enhances EZH2 activity. We also uncover anti-angiogenic factor TSP1 (thrombospondin-1, THBS1) as a direct target of EZH2 epigenetic repression. TSP1 is downregulated in advanced prostate cancer patient samples and negatively correlates with NE markers and EZH2. Furthermore, castration activates the CREB/EZH2 axis, concordantly affecting TSP1, angiogenesis and NE phenotypes in tumor xenografts. Notably, repressing CREB inhibits the CREB/EZH2 axis, tumor growth, NED, and angiogenesis in vivo. Taken together, we elucidate a new critical pathway, consisting of CREB/EZH2/TSP1, underlying ADT-enhanced NED and angiogenesis during prostate cancer progression.
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Affiliation(s)
- Yan Zhang
- Texas Therapeutics Institute, Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
- Department of Anesthesiology, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Dayong Zheng
- Texas Therapeutics Institute, Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510513, China
| | - Ting Zhou
- Texas Therapeutics Institute, Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
- Department of Pharmacy, Fengxian Hospital, Southern Medical University, Shanghai, 201400, China
| | - Haiping Song
- Texas Therapeutics Institute, Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
- Breast and Thyroid Surgery Center, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Mohit Hulsurkar
- Texas Therapeutics Institute, Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
- University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX 77030, USA
| | - Ning Su
- Texas Therapeutics Institute, Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
- Department of Oncology, Guangzhou Chest Hospital, Guangzhou, 510095, China
| | - Ying Liu
- Texas Therapeutics Institute, Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
- Department of Pathology, Xiangya Hospital and School of Basic Medical Sciences, Central South University, Changsha, 410078, China
| | - Zheng Wang
- Texas Therapeutics Institute, Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Long Shao
- Department of Pathology and Immunology, Baylor College of Medicine, and Michael E. DeBakey VAMC, Houston, TX 77030, USA
| | - Michael Ittmann
- Department of Pathology and Immunology, Baylor College of Medicine, and Michael E. DeBakey VAMC, Houston, TX 77030, USA
| | - Martin Gleave
- Department of Urologic Sciences and Vancouver Prostate Centre, University of British Columbia, Vancouver, BC, V5Z 1M9, Canada
| | - Huanxing Han
- Department of Pharmacy, Changzheng Hospital, Shanghai, 200003, China
| | - Feng Xu
- Department of Pharmacy, Fengxian Hospital, Southern Medical University, Shanghai, 201400, China
| | - Wangjun Liao
- Department of Medical Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Hongbo Wang
- Department of Gynaecology and Obstetrics, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Wenliang Li
- Texas Therapeutics Institute, Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX 77030, USA.
- Division of Oncology, Department of Internal Medicine, and Memorial Herman Cancer Center, University of Texas Health Science Center at Houston, Houston, TX 77030, USA.
- University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX 77030, USA.
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22
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Zhang H, Mehmood K, Jiang X, Yao W, Iqbal M, Waqas M, Rehman MU, Li A, Shen Y, Li J. Effect of tetramethyl thiuram disulfide (thiram) in relation to tibial dyschondroplasia in chickens. Environ Sci Pollut Res Int 2018; 25:28264-28274. [PMID: 30076550 DOI: 10.1007/s11356-018-2824-2] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 07/20/2018] [Indexed: 06/08/2023]
Abstract
Tetramethyl thiuram disulfide (thiram) is one of the important pesticides, which is extensively used in agriculture, but if it is combined with the cell membrane, then it causes membrane damage, bone morphogenic inactivation, and inhibited angiogenesis. Thiram has been considered a common cause of tibial dyschondrolplasia (TD) in various avian species, because it becomes the part of feed due to environmental contamination and its overuse in agriculture as pesticides or fungicide. However, there is no systematic study on the changes of the correlation indexes with toxic effect of the thiram in chickens. Therefore, we evaluated the toxic effects of thiram on growth performance of chickens, viscera organ index, pathological changes in tissue, and gene expression associated with osteoblast differentiation, vascularization, and tibial bone development. For this study, 1-day chickens (n = 300) were randomly distributed into two equal groups, control group (normal basal diet) and thiram group (adding thiram 40 mg/kg in basal diet). The result presented that thiram group chickens were looking unhealthy, lazy, and showing clinical symptoms like lameness. Thiram treatment significantly reduced the performance of chickens, liver index, and tibial length compared with control group. The toxic effect of thiram increased the visceral organ index (spleen and cardiac), tibia index, and TD severity considerably. It also increased serum Ca2+ and P3+ concentration and decreased tibial density compared to control chickens but the difference was not significant. Histopathology of tibia and liver showed that there were severe lesions due to toxic effect of thiram. Furthermore, HIF-1α and VEGF antibody localizations were increased and WNT4 localization was reduced significantly in immunohistochemical analysis. This systemic study of toxic effects of thiram in chicken concluded that thiram reduced the growth performance of chickens through decreasing liver index, whereas increasing kidney, cardiac, and spleen index, and induced TD by changing the expressions of VEGF, HIF-1α, and WNT4.
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Affiliation(s)
- Hui Zhang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Khalid Mehmood
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
- University College of Veterinary and Animal Sciences, Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Xiong Jiang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Wangyuan Yao
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Mujahid Iqbal
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Muhammad Waqas
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Mujeeb Ur Rehman
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Aoyun Li
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Yaoqin Shen
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Jiakui Li
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China.
- College of Animals Husbandry and Veterinary Medicine, Tibet Agricultural and Animal Husbandry University, Linzhi, Tibet, 860000, People's Republic of China.
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23
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Pang Y, Wang K, Wang Y, Chenlin Z, Lei W, Zhang Y. Tumor-promoting and pro-angiogenic effects of roxarsone via VEGFR2/PLCγ/PKC signaling. Chem Biol Interact 2018; 292:110-120. [PMID: 30028964 DOI: 10.1016/j.cbi.2018.07.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 07/01/2018] [Accepted: 07/16/2018] [Indexed: 01/21/2023]
Abstract
Roxarsone is an organoarsenic feed additive used in livestock and poultry production that is released into the environment, where it poses a risk to human health. It is known to have a tumor-promoting effect that is brought about by pro-angiogenic factors such as vascular endothelial growth factor (VEGF) and it receptors (VEGFR). However, little information is available about the other signaling molecules that could be involved. This study aims to investigate the role of PLCγ/PKC signaling in roxarsone-induced angiogenesis in a mouse B16-F10 melanoma xenograft model and rat vascular endothelial cells (ECs). Results showed treatment with 5 mg/kg and 25 mg/kg roxarsone resulted in an obvious increase in the weight and volume of B16-F10 xenografts and PLCγ/PKC phosphorylation in a dose-dependent manner in C57BL/6 mice. SU5416, a VEGFR2 inhibitor, significantly attenuated the tumor growth induced by roxarsone. Further, 1.0 μmol/L roxarsone treatment in rat ECs was observed to significantly increase the optical density rate in the MTT assay, the number of BrdU-positive cells in the proliferation assay, the migration distance in the scratch test, and the number of meshes formed in the tube formation assay. In addition, treatment with 1.0 μmol/L roxarsone was associated with significantly higher phosphorylation of PLCγ/PKC than the control treatment. U73122, a PLCγ inhibitor, was found significantly to combat the effects of 1.0 μmol/L roxarsone on the ECs. Roxarsone is capable of promoting the growth of mouse B16-F10 xenografts and tube formation in vascular ECs. Moreover, VEGFR2/PLCγ/PKC signaling may play a regulatory role in in vivo and in vitro roxarsone-induced angiogenesis.
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Affiliation(s)
- Yanhua Pang
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, PR China.
| | - Kai Wang
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, PR China.
| | - Yujing Wang
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, PR China
| | - Zhongri Chenlin
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, PR China
| | - Weiwei Lei
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, PR China
| | - Yumei Zhang
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, PR China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious, Diseases and Zoonoses, Yangzhou, PR China.
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24
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Jarzabek MA, Proctor WR, Vogt J, Desai R, Dicker P, Cain G, Raja R, Brodbeck J, Stevens D, van der Stok EP, Martens JWM, Verhoef C, Hegde PS, Byrne AT, Tarrant JM. Interrogation of transcriptomic changes associated with drug-induced hepatic sinusoidal dilatation in colorectal cancer. PLoS One 2018; 13:e0198099. [PMID: 29879147 PMCID: PMC5991753 DOI: 10.1371/journal.pone.0198099] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 05/14/2018] [Indexed: 01/10/2023] Open
Abstract
Drug-related sinusoidal dilatation (SD) is a common form of hepatotoxicity associated with oxaliplatin-based chemotherapy used prior to resection of colorectal liver metastases (CRLM). Recently, hepatic SD has also been associated with anti-delta like 4 (DLL4) cancer therapies targeting the NOTCH pathway. To investigate the hypothesis that NOTCH signaling plays an important role in drug-induced SD, gene expression changes were examined in livers from anti-DLL4 and oxaliplatin-induced SD in non-human primate (NHP) and patients, respectively. Putative mechanistic biomarkers of bevacizumab (bev)-mediated protection against oxaliplatin-induced SD were also investigated. RNA was extracted from whole liver sections or centrilobular regions by laser-capture microdissection (LCM) obtained from NHP administered anti-DLL4 fragment antigen-binding (F(ab’)2 or patients with CRLM receiving oxaliplatin-based chemotherapy with or without bev. mRNA expression was quantified using high-throughput real-time quantitative PCR. Significance analysis was used to identify genes with differential expression patterns (false discovery rate (FDR) < 0.05). Eleven (CCL2, CCND1, EFNB2, ERG, ICAM1, IL16, LFNG, NOTCH1, NOTCH4, PRDX1, and TGFB1) and six (CDH5, EFNB2, HES1, IL16, MIK67, HES1 and VWF) candidate genes were differentially expressed in the liver of anti-DLL4- and oxaliplatin-induced SD, respectively. Addition of bev to oxaliplatin-based chemotherapy resulted in differential changes in hepatic CDH5, HEY1, IL16, JAG1, MMP9, NOTCH4 and TIMP1 expression. This work implicates NOTCH and IL16 pathways in the pathogenesis of drug-induced SD and further explains the hepato-protective effect of bev in oxaliplatin-induced SD observed in CRLM patients.
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Affiliation(s)
- Monika A. Jarzabek
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - William R. Proctor
- Department of Safety Assessment, Genentech Inc., South San Francisco, California, United States of America
| | - Jennifer Vogt
- Department of Safety Assessment, Genentech Inc., South San Francisco, California, United States of America
| | - Rupal Desai
- Department of Oncology Biomarker Development, Genentech Inc., South San Francisco, California, United States of America
| | - Patrick Dicker
- Department of Epidemiology and Public Health Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Gary Cain
- Department of Safety Assessment, Genentech Inc., South San Francisco, California, United States of America
| | - Rajiv Raja
- Department of Oncology Biomarker Development, Genentech Inc., South San Francisco, California, United States of America
| | - Jens Brodbeck
- Department of Safety Assessment, Genentech Inc., South San Francisco, California, United States of America
| | - Dale Stevens
- Department of Safety Assessment, Genentech Inc., South San Francisco, California, United States of America
| | | | | | - Cornelis Verhoef
- Department of Surgical Oncology, Erasmus MC, Rotterdam, Netherlands
| | - Priti S. Hegde
- Department of Oncology Biomarker Development, Genentech Inc., South San Francisco, California, United States of America
| | - Annette T. Byrne
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Jacqueline M. Tarrant
- Department of Safety Assessment, Genentech Inc., South San Francisco, California, United States of America
- * E-mail:
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25
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Abstract
The vasculature of tumours is highly abnormal and dysfunctional. Consequently, immune effector cells have an impaired ability to penetrate solid tumours and often exhibit compromised functions. Normalization of the tumour vasculature can enhance tissue perfusion and improve immune effector cell infiltration, leading to immunotherapy potentiation. However, recent studies have demonstrated that the stimulation of immune cell functions can also help to normalize tumour vessels. In this Opinion article, we propose that the reciprocal regulation between tumour vascular normalization and immune reprogramming forms a reinforcing loop that reconditions the tumour immune microenvironment to induce durable antitumour immunity. A deeper understanding of these pathways could pave the way for identifying new biomarkers and developing more effective combination treatment strategies for patients with cancer.
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Affiliation(s)
- Yuhui Huang
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, Soochow University, 199 Ren'ai Rd, Suzhou, China, 215123
- Key Laboratory of Stem Cells and Biomedical Materials of Jiangsu Province & Chinese Ministry of Science and Technology, Soochow University, 199 Ren'ai Rd, Suzhou, China, 215123
| | - Betty Y.S. Kim
- Department of Cancer Biology, Neurosurgery and Neurosciences, Mayo Clinic, 4500 San Pablo Rd, Jacksonville, USA, 32224
| | - Charles K. Chan
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford School of Medicine, 291 Campus Drive, Stanford, USA, 94305
| | - Stephen M. Hahn
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, USA, 77030
| | - Irving L. Weissman
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford School of Medicine, 291 Campus Drive, Stanford, USA, 94305
| | - Wen Jiang
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, USA, 77030
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26
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Alabed Alibrahim E, Andriantsitohaina R, Hardonnière K, Soleti R, Faure S, Simard G. A redox-sensitive signaling pathway mediates pro-angiogenic effect of chlordecone via estrogen receptor activation. Int J Biochem Cell Biol 2018; 97:83-97. [PMID: 29452237 DOI: 10.1016/j.biocel.2018.02.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 12/21/2017] [Accepted: 02/12/2018] [Indexed: 12/20/2022]
Abstract
AIM Chlordecone is able to induce pro-angiogenic effect through an estrogen receptor (ERα) pathway involving NO release and VEGF. The present study aimed to determine the molecular mechanisms by which chlordecone promotes angiogenesis in human endothelial cells. RESULTS High but not low concentration of chlordecone increased mitochondrial respiratory capacity and mitochondrial DNA content in endothelial cells. The ROS scavenger MnTMPyP was able to prevent the increase of both VEGF expression and capillary length induced by chlordecone. A significant increase of cytoplasmic O2- production was observed after 1 and 4 h incubation of chlordecone, but not after 2 h. The NADPH oxidase inhibitor apocynin or silencing p47phox prevented angiogenesis and tube formation but also the increase in production of O2- at 1 h. In addition, apocynin as well silencing p47phox prevented eNOS activation and the NO synthase inhibitor L-NAME inhibited mitochondrial O2-production. All the previous effects of chlordecone were prevented by fulvestrant. CONCLUSION Our results indicate that an adaptation of the mitochondrial energy metabolism occurs in the chlordecone angiogenic response. Finally, we showed that chlordecone induces endothelial cells angiogenesis by a cross-talk involving NADPH oxidase and mitochondrial O2-via a NO sensitive pathways through activation of ERα. These findings propose that a molecular mechanism may partly explain the epidemiological evidence implicating chlordecone as risk factor carcinogenesis.
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Affiliation(s)
- Eid Alabed Alibrahim
- INSERM U1063, Stress Oxydant et Pathologies Métaboliques, Université d'Angers, Université Bretagne-Loire, Angers, France
| | - Ramaroson Andriantsitohaina
- INSERM U1063, Stress Oxydant et Pathologies Métaboliques, Université d'Angers, Université Bretagne-Loire, Angers, France
| | - Kévin Hardonnière
- MINT, Univ Angers, INSERM U1066, CNRS 6021, Université Bretagne Loire, IBS-CHU, 4 Rue Larrey, F-49933 Angers, France
| | - Raffaella Soleti
- INSERM U1063, Stress Oxydant et Pathologies Métaboliques, Université d'Angers, Université Bretagne-Loire, Angers, France
| | - Sébastien Faure
- INSERM U1063, Stress Oxydant et Pathologies Métaboliques, Université d'Angers, Université Bretagne-Loire, Angers, France
| | - Gilles Simard
- INSERM U1063, Stress Oxydant et Pathologies Métaboliques, Université d'Angers, Université Bretagne-Loire, Angers, France; Départment de Biochimie et Génétique, Centre Hospitalier Universitaire, Angers, France.
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27
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Abstract
With many desirable features, such as being more effective and having multiple effects, antiangiogenesis has become one of the promising cancer treatments. The aim of this study was to design and synthesize a new targeted bioresponsive nanosystem with antiangiogenesis properties. The mUPR@Ru(POP) nanosystem was constructed by the polymerization of Ulva lactuca polysaccharide and N-isopropyl acrylamide, decorated with methoxy polyethylene glycol and Arg-Gly-Asp peptide, and encapsulated with anticancer complex [Ru(phen)2p-MOPIP](PF6)2·2H2O. The nanosystem was both pH responsive and targeted. Therefore, the cellular uptake of the drug was greatly improved. Moreover, the mUPR@Ru(POP) had strong suppressive effects against vascular endothelial growth factor (VEGF)-induced angiogenesis through apoptosis. The mUPR@Ru(POP) significantly inhibited VEGF-induced human umbilical vein endothelial cell migration, invasion, and tube formation. These findings have presented new insights into the development of antiangiogenesis drugs.
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Affiliation(s)
- Fang Yang
- Department of Chemistry, Jinan University, Guangzhou, China
| | - Xueyang Fang
- Department of Chemistry, Jinan University, Guangzhou, China
| | - Wenting Jiang
- Department of Chemistry, Jinan University, Guangzhou, China
| | - Tianfeng Chen
- Department of Chemistry, Jinan University, Guangzhou, China
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28
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Catino S, Tutino M, Ruggieri S, Marinaccio C, Giua R, de Gennaro G, Corsi P, Assennato G, Ribatti D. Angiogenic activity in vivo of the particulate matter (PM10). Ecotoxicol Environ Saf 2017; 140:156-161. [PMID: 28258041 DOI: 10.1016/j.ecoenv.2017.02.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 02/17/2017] [Accepted: 02/24/2017] [Indexed: 06/06/2023]
Abstract
BACKGROUND Particulate matter (PM) is the most efficient vehicle for the inhalation and absorption of toxic substances into the body. METHOD The present study was aimed at testing the hypothesis that PM10 samples collected on quartz filters exert an angiogenic activity in vivo in the chick embryo chorioallantoic membrane (CAM) assay. RESULTS When the low, medium, and high PM10 concentrations filters were tested in the CAM assay, an increasing number of microvessels was detectable after 4 days of applications of the filters. Moreover, at histological level, numerous microvessels and a dense inflammatory infiltrate were recognizable in the CAM mesenchyme. CONCLUSION Our data show a clear dose-response relationship between the dose variable (PM10 and Bap) and the outcome variable. So far, the PM10 target value is determined on the basis of regulatory agreements and is not health-based. In addition, the mere gravimetric measure of PM10 cannot be considered a fully reliable surrogate of the overall toxicity of the mixture.
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Affiliation(s)
- Simona Catino
- Environmental Protection Agency - Apulia, Bari, Italy.
| | - Maria Tutino
- Environmental Protection Agency - Apulia, Bari, Italy.
| | - Simona Ruggieri
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, University of Bari Medical School, Bari, Italy.
| | - Christian Marinaccio
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, University of Bari Medical School, Bari, Italy.
| | - Roberto Giua
- Environmental Protection Agency - Apulia, Bari, Italy.
| | | | - Patrizia Corsi
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, University of Bari Medical School, Bari, Italy.
| | | | - Domenico Ribatti
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, University of Bari Medical School, Bari, Italy; National Cancer Institute "Giovanni Paolo II", Bari, Italy.
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29
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Chen H, Zhang L, Long X, Li P, Chen S, Kuang W, Guo J. Sargassum fusiforme polysaccharides inhibit VEGF-A-related angiogenesis and proliferation of lung cancer in vitro and in vivo. Biomed Pharmacother 2017; 85:22-27. [PMID: 27930983 DOI: 10.1016/j.biopha.2016.11.131] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 11/07/2016] [Accepted: 11/28/2016] [Indexed: 01/18/2023] Open
Abstract
Sargassum fusiforme (Harv.) is a brown alga belonging to the Sargasaceae family. The Sargassum fusiforme polysaccharides (SFPS) have demonstrated good anti-tumor and immunomodulatory activity. However, the underlying mechanisms of its anti-tumorigenesis, especially the anti-angiogenic activity is yet to be established. In the present study, we attempted to determine the effects of SFPS on the human lung adenocarcinoma SPC-A-1 cells and its xenograft model. The results showed that SFPS provides a concentration-dependent inhibition of SPC-A-1 cell proliferation in in vitro and the tumor growth in in vivo studies. Immunohistochemistry studies revealed that the administration of SFPS significantly decreased CD31, VEGF-A expression and the tumor microvessel density (MVD). SFPS also provided a dose-dependent impairment of cell vitality, induction of cell cycle arrest and apoptosis of human umbilical vein endothelial cells (HUVECs). SFPS inhibited the expression of VEGF-A in tumor cells and its receptor VEGFR2 in HUVECs. The HUVEC tube formation assay showed that SFPS could abrogate the tube formation with relatively decreased tubes length of tube-like capillary similar to anti-VEGF antibody, Avastin®. These findings suggested that SFPS could be used as an alternative anticancer drug as they inhibited the angiogenesis and the microvessel formation through disruption of VEGF signals apart from direct tumor cytotoxicity.
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Affiliation(s)
- Huiling Chen
- Department of Physiology, College of Medical, Ningbo College of Health Sciences, Ningbo 315010, China
| | - Ling Zhang
- Department of Physiology, College of Medical, Ningbo College of Health Sciences, Ningbo 315010, China
| | - Xiange Long
- Department of Physiology, College of Medical, Ningbo College of Health Sciences, Ningbo 315010, China
| | - Peifei Li
- Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo 315211, China
| | - Shengcan Chen
- Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo 315211, China
| | - Wei Kuang
- Department of Physiology, College of Medical, Ningbo College of Health Sciences, Ningbo 315010, China.
| | - Junming Guo
- Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo 315211, China
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30
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Balansky R, Ganchev G, Iltcheva M, Nikolov M, La Maestra S, Micale RT, Steele VE, De Flora S. Interactions between ethanol and cigarette smoke in a mouse lung carcinogenesis model. Toxicology 2016; 373:54-62. [PMID: 27840117 DOI: 10.1016/j.tox.2016.11.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 11/09/2016] [Accepted: 11/09/2016] [Indexed: 01/11/2023]
Abstract
Both ethanol and cigarette smoke are classified as human carcinogens. They can synergize, especially in tissues of the upper aerodigestive tract that are targeted by both agents. The main objective of the present study was to evaluate the individual and combined effects of ethanol and smoke in the respiratory tract, either following transplacental exposure and/or postnatal exposure. We designed two consecutive studies in mouse models by exposing Swiss H mice to oral ethanol and/or inhaled mainstream cigarette smoke for up to 4 months, at various prenatal and postnatal life stages. Clastogenic effects and histopathological alterations were evaluated after 4 and 8 months, respectively. Ethanol was per se devoid of clastogenic effects in mouse peripheral blood erythrocytes. However, especially in mice exposed both transplacentally throughout pregnancy and in the postnatal life, ethanol administration was associated not only with liver damage but also with pro-angiogenetic effects in the lung by stimulating the proliferation of blood vessels. In addition, these mice developed pulmonary emphysema, alveolar epithelial hyperplasias, microadenomas, and benign tumors. On the other hand, ethanol interfered in the lung carcinogenesis process resulting from the concomitant exposure of mice to smoke. In fact, ethanol significantly attenuated some smoke-related preneoplastic and neoplastic lesions in the respiratory tract, such as alveolar epithelial hyperplasia, microadenomas, and even malignant tumors. In addition, ethanol attenuated cigarette smoke clastogenicity. In conclusion, preclinical studies provide evidence that, in spite of its pulmonary toxicity, ethanol may mitigate some noxious effects of cigarette smoke in the respiratory tract.
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Affiliation(s)
- Roumen Balansky
- National Center of Oncology, Str. Plovdivsko pole 6, Sofia, 1756, Bulgaria; Department of Health Sciences, University of Genoa, Via A. Pastore 1, 16132 Genoa, Italy.
| | - Gancho Ganchev
- National Center of Oncology, Str. Plovdivsko pole 6, Sofia, 1756, Bulgaria.
| | - Marietta Iltcheva
- National Center of Oncology, Str. Plovdivsko pole 6, Sofia, 1756, Bulgaria.
| | - Manasi Nikolov
- National Center of Oncology, Str. Plovdivsko pole 6, Sofia, 1756, Bulgaria.
| | - S La Maestra
- Department of Health Sciences, University of Genoa, Via A. Pastore 1, 16132 Genoa, Italy.
| | - Rosanna T Micale
- Department of Health Sciences, University of Genoa, Via A. Pastore 1, 16132 Genoa, Italy.
| | - Vernon E Steele
- National Cancer Institute, Chemoprevention Agent Development Research Group, Division of Cancer Prevention,9609 Medical Center Drive, Bethesda, MD 20892, USA.
| | - Silvio De Flora
- Department of Health Sciences, University of Genoa, Via A. Pastore 1, 16132 Genoa, Italy.
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31
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Wei Y, Gong J, Xu Z, Duh EJ. Nrf2 promotes reparative angiogenesis through regulation of NADPH oxidase-2 in oxygen-induced retinopathy. Free Radic Biol Med 2016; 99:234-243. [PMID: 27521459 PMCID: PMC8565612 DOI: 10.1016/j.freeradbiomed.2016.08.013] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 08/01/2016] [Accepted: 08/09/2016] [Indexed: 12/11/2022]
Abstract
Revascularization of ischemic tissue is a highly desirable outcome in multiple diseases, including cardiovascular diseases and ischemic retinopathies. Oxidative stress and inflammation are both known to play a role in suppressing reparative angiogenesis in ischemic disease models including oxygen-induced retinopathy (OIR), but the regulatory molecules governing these pathophysiologic processes in retinal ischemia are largely unknown. Nrf2 is a major stress-response transcription factor that has been implicated in regulating ischemic angiogenesis in the retina and other tissue beds. Using Nrf2-deficient mice, we investigated the effects of Nrf2 in regulating revascularization and modulating the retinal tissue milieu during ischemia. Strikingly, Nrf2's beneficial effect on reparative angiogenesis only became manifested in the later phase of ischemia in OIR, from postnatal day 14 (P14) to P17. This was temporally associated with a reduction in both oxidative stress and inflammatory mediators in wild-type compared to Nrf2-/- mice. Nrf2-/- retinas exhibited an increase in VEGF but also induction of anti-angiogenic Dll4/Notch signaling. NADPH oxidase (NOX), and especially NOX2, is a major pathogenic molecule and a particularly important contributor to oxidative stress in multiple retinal disease processes. Nrf2-/- mice exhibited a significant exacerbation of NOX2 induction in OIR that manifested in the later phases of ischemia. Pharmacologic inhibition of NADPH oxidase abrogated the adverse effect of Nrf2 deficiency on reparative angiogenesis. Taken together, this suggests that Nrf2 is an important regulator of the retinal milieu during tissue ischemia, and that the Nrf2/NOX2 balance may play a critical role in determining the fate of ischemic revascularization.
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MESH Headings
- Adaptor Proteins, Signal Transducing
- Animals
- Animals, Newborn
- Calcium-Binding Proteins
- Gene Expression Regulation
- Intracellular Signaling Peptides and Proteins/genetics
- Intracellular Signaling Peptides and Proteins/metabolism
- Ischemia/genetics
- Ischemia/metabolism
- Ischemia/pathology
- Membrane Proteins/genetics
- Membrane Proteins/metabolism
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- NADPH Oxidase 2/genetics
- NADPH Oxidase 2/metabolism
- NF-E2-Related Factor 2/deficiency
- NF-E2-Related Factor 2/genetics
- Neovascularization, Pathologic/chemically induced
- Neovascularization, Pathologic/genetics
- Neovascularization, Pathologic/metabolism
- Neovascularization, Pathologic/pathology
- Oxidative Stress
- Oxygen/adverse effects
- Receptors, Notch/genetics
- Receptors, Notch/metabolism
- Retina/drug effects
- Retina/metabolism
- Retina/pathology
- Retinitis/chemically induced
- Retinitis/genetics
- Retinitis/metabolism
- Retinitis/pathology
- Signal Transduction
- Vascular Endothelial Growth Factor A/genetics
- Vascular Endothelial Growth Factor A/metabolism
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Affiliation(s)
- Yanhong Wei
- Department of Ophthalmology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Junsong Gong
- Department of Ophthalmology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Zhenhua Xu
- Department of Ophthalmology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Elia J Duh
- Department of Ophthalmology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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32
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Chiu WC, Chiou TJ, Chung MJ, Chiang AN. β2-Glycoprotein I Inhibits Vascular Endothelial Growth Factor-Induced Angiogenesis by Suppressing the Phosphorylation of Extracellular Signal-Regulated Kinase 1/2, Akt, and Endothelial Nitric Oxide Synthase. PLoS One 2016; 11:e0161950. [PMID: 27579889 PMCID: PMC5006999 DOI: 10.1371/journal.pone.0161950] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Accepted: 08/15/2016] [Indexed: 02/07/2023] Open
Abstract
Angiogenesis is the process of new blood vessel formation, and it plays a key role in various physiological and pathological conditions. The β2-glycoprotein I (β2-GPI) is a plasma glycoprotein with multiple biological functions, some of which remain to be elucidated. This study aimed to identify the contribution of 2-GPI on the angiogenesis induced by vascular endothelial growth factor (VEGF), a pro-angiogenic factor that may regulate endothelial remodeling, and its underlying mechanism. Our results revealed that β2-GPI dose-dependently decreased the VEGF-induced increase in endothelial cell proliferation, using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and the bromodeoxyuridine (BrdU) incorporation assays. Furthermore, incubation with both β2-GPI and deglycosylated β2-GPI inhibited the VEGF-induced tube formation. Our results suggest that the carbohydrate residues of β2-GPI do not participate in the function of anti-angiogenesis. Using in vivo Matrigel plug and angioreactor assays, we show that β2-GPI remarkably inhibited the VEGF-induced angiogenesis at a physiological concentration. Moreover, β2-GPI inhibited the VEGF-induced phosphorylation of extracellular signal-regulated kinase 1/2 (ERK1/2), Akt, and endothelial nitric oxide synthase (eNOS). In summary, our in vitro and in vivo data reveal for the first time that β2-GPI inhibits the VEGF-induced angiogenesis and highlights the potential for β2-GPI in anti-angiogenic therapy.
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Affiliation(s)
- Wen-Chin Chiu
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei, Taiwan
- Division of Thoracic Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Tzeon-Jye Chiou
- Division of Transfusion Medicine, Department of Medicine, Taipei Veterans General Hospital and National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Meng-Ju Chung
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei, Taiwan
| | - An-Na Chiang
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei, Taiwan
- * E-mail:
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33
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Perucca Orfei C, Lovati AB, Viganò M, Stanco D, Bottagisio M, Di Giancamillo A, Setti S, de Girolamo L. Dose-Related and Time-Dependent Development of Collagenase-Induced Tendinopathy in Rats. PLoS One 2016; 11:e0161590. [PMID: 27548063 PMCID: PMC4993508 DOI: 10.1371/journal.pone.0161590] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 08/08/2016] [Indexed: 12/20/2022] Open
Abstract
Tendinopathy is a big burden in clinics and it represents 45% of musculoskeletal lesions. Despite the relevant social impact, both pathogenesis and development of the tendinopathy are still under-investigated, thus limiting the therapeutic advancement in this field. The purpose of this study was to evaluate the dose-dependent and time-related tissue-level changes occurring in a collagenase-induced tendinopathy in rat Achilles tendons, in order to establish a standardized model for future pre-clinical studies. With this purpose, 40 Sprague Dawley rats were randomly divided into two groups, treated by injecting collagenase type I within the Achilles tendon at 1 mg/mL (low dose) or 3 mg/mL (high dose). Tendon explants were histologically evaluated at 3, 7, 15, 30 and 45 days. Our results revealed that both the collagenase doses induced a disorganization of collagen fibers and increased the number of rounded resident cells. In particular, the high dose treatment determined a greater neovascularization and fatty degeneration with respect to the lower dose. These changes were found to be time-dependent and to resemble the features of human tendinopathy. Indeed, in our series, the acute phase occurred from day 3 to day 15, and then progressed towards the proliferative phase from day 30 to day 45 displaying a degenerative appearance associated with a very precocious and mild remodeling process. The model represents a good balance between similarity with histological features of human tendinopathy and feasibility, in terms of tendon size to create lesions and costs when compared to other animal models. Moreover, this model could contribute to improve the knowledge in this field, and it could be useful to properly design further pre-clinical studies to test innovative treatments for tendinopathy.
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Affiliation(s)
- Carlotta Perucca Orfei
- Orthopaedic Biotechnology Laboratory, IRCCS Galeazzi Orthopaedic Institute, Milan, Italy
- Department of Drug Sciences, University of Pavia, Pavia, Italy
| | - Arianna B. Lovati
- Cell and Tissue Engineering Laboratory, IRCCS Galeazzi Orthopaedic Institute, Milan, Italy
| | - Marco Viganò
- Orthopaedic Biotechnology Laboratory, IRCCS Galeazzi Orthopaedic Institute, Milan, Italy
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy
| | - Deborah Stanco
- Orthopaedic Biotechnology Laboratory, IRCCS Galeazzi Orthopaedic Institute, Milan, Italy
| | - Marta Bottagisio
- Cell and Tissue Engineering Laboratory, IRCCS Galeazzi Orthopaedic Institute, Milan, Italy
- Department of Veterinary Medicine (DiMeVet), University of Milan, Milan, Italy
| | | | | | - Laura de Girolamo
- Orthopaedic Biotechnology Laboratory, IRCCS Galeazzi Orthopaedic Institute, Milan, Italy
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34
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Reddy MK, Vasir JK, Hegde GV, Joshi SS, Labhasetwar V. Erythropoietin Induces Excessive Neointima Formation: A Study in a Rat Carotid Artery Model of Vascular Injury. J Cardiovasc Pharmacol Ther 2016; 12:237-47. [PMID: 17875952 DOI: 10.1177/1074248406297326] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A therapeutic strategy that would mitigate the events leading to hyperplasia and facilitate re-endothelialization of an injured artery after balloon angioplasty could be effective for a long-term patency of the artery. It is hypothesized that erythropoietin (EPO), which has both anti-inflammatory and antiapoptotic properties, will prevent hyperplasia, and its ability to proliferate and mobilize endothelial progenitor cells will re-endothelialize the injured artery. To test this hypothesis, EPO (5000 IU/kg) in solution was injected intraperitoneally 6 hours before vascular injury and then on every alternate day for a week or as a single dose (5000 IU/kg) in a sustained release gel formulation 1 week before the vascular injury. Morphometric analysis revealed nearly continuous re-endothelialization of the injured artery in EPO solution-treated animals (90% vs less than 20% in saline control); however, the treatment also caused excessive neointima formation (intima/media ratio, 2.10 ± 0.09 vs 1.60 ± 0.02 saline control, n = 5, P < .001). The EPO gel also induced similar excessive neointima formation. Immunohistochemical analysis of the injured arteries from the animals treated with EPO solution demonstrated a significant angiogenic response in adventitia and media, thus explaining the formation of excessive neointima. Although the results are in contrast to expectation, they explain a greater degree of stenosis seen in hemodialysis access fistulas in patients who are on EPO therapy for anemic condition. The results also caution the use of EPO, particularly in patients who are at a risk of vascular injury or are suffering from an atherosclerotic condition.
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Affiliation(s)
- Maram K Reddy
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA
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35
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Banskota S, Gautam J, Regmi SC, Gurung P, Park MH, Kim SJ, Nam TG, Jeong BS, Kim JA. BJ-1108, a 6-Amino-2,4,5-Trimethylpyridin-3-ol Analog, Inhibits Serotonin-Induced Angiogenesis and Tumor Growth through PI3K/NOX Pathway. PLoS One 2016; 11:e0148133. [PMID: 26824764 PMCID: PMC4732985 DOI: 10.1371/journal.pone.0148133] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2015] [Accepted: 01/13/2016] [Indexed: 12/22/2022] Open
Abstract
5-Hydroxytryptamine (5-HT) induces proliferation of cancer cells and vascular cells. In addition to 5-HT production by several cancer cells including gastrointestinal and breast cancer, a significant level of 5-HT is released from activated platelets in the thrombotic environment of tumors, suggesting that inhibition of 5-HT signaling may constitute a new target for antiangiogenic anticancer drug discovery. In the current study we clearly demonstrate that 5-HT-induced angiogenesis was mediated through the 5-HT1 receptor-linked Gβγ/Src/PI3K pathway, but not through the MAPK/ERK/p38 pathway. In addition, 5-HT induced production of NADPH oxidase (NOX)-derived reactive oxygen species (ROS). In an effort to develop new molecularly targeted anticancer agents against 5-HT action in tumor growth, we demonstrate that BJ-1108, a derivative of 6-amino-2,4,5-trimethylpyridin-3-ol, significantly inhibited 5-HT-induced angiogenesis. In addition, BJ-1108 induced a significant reduction in the size and weight of excised tumors in breast cancer cell-inoculated CAM assay, showing proportionate suppression of tumor growth along with inhibition of angiogenesis. In human umbilical vein endothelial cells (HUVECs), BJ-1108 significantly suppressed 5-HT-induced ROS generation and phosphorylation of PI3K/Akt but not of Src. Unlike NOX inhibitors, BJ-1108, which showed better antioxidant activity than vitamin C, barely suppressed superoxide anion induced by mevalonate or geranylgeranyl pyrophosphate which directly activates NOX without help from other signaling molecules in HUVECs, implying that the anti-angiogenic action of BJ-1108 was not mediated through direct action on NOX activation, or free radical scavenging activity. In conclusion, BJ-1108 inhibited 5-HT-induced angiogenesis through PI3K/NOX signaling but not through Src, ERK, or p38.
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MESH Headings
- Aminopyridines/chemical synthesis
- Aminopyridines/pharmacology
- Angiogenesis Inducing Agents/pharmacology
- Angiogenesis Inhibitors/chemical synthesis
- Angiogenesis Inhibitors/pharmacology
- Aniline Compounds/chemical synthesis
- Aniline Compounds/pharmacology
- Animals
- Cell Line, Tumor
- Cell Movement/drug effects
- Chick Embryo
- Chorioallantoic Membrane/blood supply
- Chorioallantoic Membrane/drug effects
- Chorioallantoic Membrane/pathology
- GTP-Binding Protein beta Subunits/genetics
- GTP-Binding Protein beta Subunits/metabolism
- Gene Expression Regulation, Neoplastic
- Human Umbilical Vein Endothelial Cells/cytology
- Human Umbilical Vein Endothelial Cells/drug effects
- Human Umbilical Vein Endothelial Cells/metabolism
- Humans
- MCF-7 Cells
- NADPH Oxidases/antagonists & inhibitors
- NADPH Oxidases/genetics
- NADPH Oxidases/metabolism
- Neovascularization, Pathologic/chemically induced
- Neovascularization, Pathologic/genetics
- Neovascularization, Pathologic/pathology
- Neovascularization, Pathologic/prevention & control
- Oxidation-Reduction
- Phosphatidylinositol 3-Kinases/genetics
- Phosphatidylinositol 3-Kinases/metabolism
- Phosphoinositide-3 Kinase Inhibitors
- Phosphorylation
- Proto-Oncogene Proteins c-akt/genetics
- Proto-Oncogene Proteins c-akt/metabolism
- Reactive Oxygen Species/antagonists & inhibitors
- Reactive Oxygen Species/metabolism
- Receptors, Serotonin, 5-HT1/genetics
- Receptors, Serotonin, 5-HT1/metabolism
- Serotonin/pharmacology
- Signal Transduction
- p38 Mitogen-Activated Protein Kinases/genetics
- p38 Mitogen-Activated Protein Kinases/metabolism
- src-Family Kinases/genetics
- src-Family Kinases/metabolism
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Affiliation(s)
- Suhrid Banskota
- College of Pharmacy, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Jaya Gautam
- College of Pharmacy, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Sushil C. Regmi
- College of Pharmacy, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Pallavi Gurung
- College of Pharmacy, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Myo-Hyeon Park
- College of Pharmacy, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Seung Joo Kim
- College of Pharmacy, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Tae-gyu Nam
- Department of Pharmacy, Hanyang University, Ansan, 15588, Republic of Korea
| | - Byeong-Seon Jeong
- College of Pharmacy, Yeungnam University, Gyeongsan, 38541, Republic of Korea
- * E-mail: (JK); (BJ)
| | - Jung-Ae Kim
- College of Pharmacy, Yeungnam University, Gyeongsan, 38541, Republic of Korea
- * E-mail: (JK); (BJ)
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36
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Wang L, Li G, Chen Q, Ke D. Octanoylated ghrelin attenuates angiogenesis induced by oxLDL in human coronary artery endothelial cells via the GHSR1a-mediated NF-κB pathway. Metabolism 2015; 64:1262-71. [PMID: 26277200 DOI: 10.1016/j.metabol.2015.07.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2015] [Revised: 06/24/2015] [Accepted: 07/13/2015] [Indexed: 02/08/2023]
Abstract
OBJECTIVE Low concentrations of oxidized low-density lipoprotein (oxLDL) promote the in vitro angiogenesis of endothelial cells and play an important role in plaque angiogenesis, which may cause plaque vulnerability and enhance the risk of intravascular thrombosis. The aim of this research was to investigate the effects of octanoylated ghrelin on oxLDL-induced angiogenesis and the underlying molecular mechanisms involved in this process. MATERIALS/METHODS Human coronary artery endothelial cells (HCAECs) were incubated with 5 μg/ml oxLDL and treated with various concentrations of octanoylated ghrelin (10(-9)-10(-6)M) with or without inhibitors for 24h. Cell proliferation, migration, and in vitro angiogenesis were analyzed by bromodeoxyuridine (BrdU) staining and BrdU enzyme-linked immunosorbent assay (ELISA), transwell assay, and tube formation on Matrigel, respectively. NF-κB (nuclear factor κB) expression was determined by Western-blot analysis. RESULTS Treatment with oxLDL at 5 μg/ml enhanced the proliferation, migration and tube formation of HCAECs. In contrast, pretreatment with octanoylated ghrelin significantly attenuated in vitro angiogenesis in oxLDL-induced HCAECs. In addition, Western blot analysis indicated that NF-κB expression was increased after oxLDL treatment, and that this effect was significantly reversed by pretreatment with octanoylated ghrelin. However, the NF-κB inhibitor PDTC or the GHSR1a inhibitor [D-Lys3]-GHRP-6 abolished the effects of octanoylated ghrelin on the inhibition of angiogenesis and NF-κB p65 expression induced by oxLDL. CONCLUSIONS These findings suggest that octanoylated ghrelin attenuates angiogenesis induced by oxLDL in HCAECs via the inhibition of GHSR1a-mediated NF-κB pathway. Furthermore, octanoylated ghrelin may promote the stability of vulnerable plaques by inhibiting plaque angiogenesis.
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Affiliation(s)
- Li Wang
- Department of Geriatrics, the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Guiqiong Li
- Department of Geriatrics, the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Qingwei Chen
- Department of Geriatrics, the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China.
| | - Dazhi Ke
- Department of Geriatrics, the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
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37
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Gopinathan G, Milagre C, Pearce OMT, Reynolds LE, Hodivala-Dilke K, Leinster DA, Zhong H, Hollingsworth RE, Thompson R, Whiteford JR, Balkwill F. Interleukin-6 Stimulates Defective Angiogenesis. Cancer Res 2015; 75:3098-107. [PMID: 26081809 PMCID: PMC4527186 DOI: 10.1158/0008-5472.can-15-1227] [Citation(s) in RCA: 170] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 05/13/2015] [Indexed: 12/19/2022]
Abstract
The cytokine IL6 has a number of tumor-promoting activities in human and experimental cancers, but its potential as an angiogenic agent has not been fully investigated. Here, we show that IL6 can directly induce vessel sprouting in the ex vivo aortic ring model, as well as endothelial cell proliferation and migration, with similar potency to VEGF. However, IL6-stimulated aortic ring vessel sprouts had defective pericyte coverage compared with VEGF-stimulated vessels. The mechanism of IL6 action on pericytes involved stimulation of the Notch ligand Jagged1 as well as angiopoietin2 (Ang2). When peritoneal xenografts of ovarian cancer were treated with an anti-IL6 antibody, pericyte coverage of vessels was restored. In addition, in human ovarian cancer biopsies, there was an association between levels of IL6 mRNA, Jagged1, and Ang2. Our findings have implications for the use of cancer therapies that target VEGF or IL6 and for understanding abnormal angiogenesis in cancers, chronic inflammatory disease, and stroke.
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Affiliation(s)
- Ganga Gopinathan
- Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London, United Kingdom
| | - Carla Milagre
- Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London, United Kingdom
| | - Oliver M T Pearce
- Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London, United Kingdom
| | - Louise E Reynolds
- Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London, United Kingdom
| | - Kairbaan Hodivala-Dilke
- Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London, United Kingdom
| | - David A Leinster
- Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London, United Kingdom
| | - Haihong Zhong
- MedImmune, One MedImmune Way, Gaithersburg, Maryland
| | | | - Richard Thompson
- Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London, United Kingdom
| | - James R Whiteford
- William Harvey Institute, Queen Mary University of London, Charterhouse Square, London, United Kingdom
| | - Frances Balkwill
- Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London, United Kingdom.
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38
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Kang R, Li H, Rickers K, Ringgaard S, Xie L, Bünger C. Intervertebral disc degenerative changes after intradiscal injection of TNF-α in a porcine model. Eur Spine J 2015; 24:2010-6. [PMID: 25850392 DOI: 10.1007/s00586-015-3926-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 03/31/2015] [Accepted: 04/01/2015] [Indexed: 12/11/2022]
Abstract
PURPOSE To investigate whether exogenous tumor necrosis factor-α (TNF-α) will initiate a degenerative process in intervertebral disc in vivo. METHODS Exogenous TNF-α in dosages of 50 and 100 ng in 50 μL Dulbecco's Modified Essential Medium (DMEM) was injected into porcine lumbar discs; a third disc was injected only with 50 μL DMEM as a control. Magnetic resonance imaging (MRI) yielding T1- and T2-weighted images, T2-mapping, and post-contrast T1 images was performed and histology was studied as well. RESULTS After 3 months, a significant decrease in T2 value calculated from T2-mapping MRI was observed in the annulus and nucleus of both groups injected with TNF-α along with a slight decrease in disc height and nucleus volumes in comparison to the control discs. No obvious visual differences among the groups were observed in the normal T1- and T2-weighted MRI images. Post-contrast T1 MRI showed increased annulus enhancement in both TNF-α-injected groups compared to the control discs, while no enhancement difference was observed in the nucleus. Histological analysis showed degenerative changes with annulus fissure, cell cluster, nucleus matrix loss, vascularization and interleukin-1β expression in the outer annulus of both TNF-α-injected discs, while no degenerative changes were observed in the control discs. CONCLUSIONS Intradiscal injection of exogenous TNF-α caused early stage disc degeneration in a porcine model. It may thus support the hypothesis of exogenic TNF-α being an important early pathogenetic factor in disc degeneration.
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Affiliation(s)
- Ran Kang
- Orthopaedic Research Lab, Aarhus University, Building 1 A, Noerrebrogade 44, 8000, Aarhus C, Denmark,
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39
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Tan W, Bailey AP, Shparago M, Busby B, Covington J, Johnson JW, Young E, Gu JW. Chronic alcohol consumption stimulates VEGF expression, Tumor angiogenesis and progression of melanoma in mice. Cancer Biol Ther 2014; 6:1211-7. [PMID: 17660711 DOI: 10.4161/cbt.6.8.4406] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The mechanisms of alcohol-induced cancer in humans are unclear. We used the immunocompetent mice implanted with B16F10 cells to evaluate the effects of physiologically relevant EtOH intake on tumor growth and angiogenesis of melanoma. Six-wk-old male mice (C57BL/6J) were given 1% EtOH in drinking water for 12-hrs during the night which was then replaced with regular water during the remaining 12-hrs each day for 4 wks (n = 10). The control mice received regular drinking water only. In the second week, all mice were inoculated subcutaneously on the right proximal dorsal with 5 x 10(5) B16F10 cells. In the end, the tumors were isolated for measuring tumor size, average microvascular density (AMVD) using CD31 immunohistochemistry, and the expression of VEGF and its receptor (Flt-1) using Northern blot, ELISA, and immunohistochemistry. EtOH intake caused a 2.16-fold increase in tumor weight over the control (4.81 +/- 0.39 vs. 2.23 +/- 0.48 g; n = 10; p = 0.003), a 2.02-fold increase in AMVD (60.63 +/- 5.56 vs. 30.01 +/- 7.41/mm(2); p = 0.0014), and a significant increase in VEGF mRNA and protein expression plus Flt-1 protein levels in melanoma compared to the control group (p < 0.01). These results suggest that progression of melanoma growth and angiogenesis may be mediated by upregulation of VEGF and Flt-1, especially under the influence of EtOH.
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Affiliation(s)
- Wei Tan
- Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Mississippi 39216-4505, USA
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40
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Helmestam M, Davey E, Stavreus-Evers A, Olovsson M. Bisphenol A affects human endometrial endothelial cell angiogenic activity in vitro. Reprod Toxicol 2014; 46:69-76. [PMID: 24632125 DOI: 10.1016/j.reprotox.2014.03.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Revised: 02/25/2014] [Accepted: 03/03/2014] [Indexed: 12/21/2022]
Abstract
The widespread Bisphenol A (BPA) is classified as an endocrine-disrupting chemical (EDC) with estrogenic properties. Human endometrial endothelial cells (HEECs) play a key role in the endometrial angiogenesis that is under the control of estradiol. The hypothesis was that BPA may affect endometrial angiogenesis by disturbing some functional properties of the HEEC. To study this, primary HEECs were exposed to environmentally relevant doses of BPA. The HEECs were co-cultured with primary endometrial stromal cells to create conditions as similar to the in vivo situation as possible. The effects of BPA were evaluated by proliferation and viability assays, tube-formation assays, quantitative PCRs, Western blots and ELISAs. BPA slightly increased HEEC tube formation and VEGF-D protein expression compared with vehicle, without affecting HEEC viability or proliferation. Bisphenol A thus caused changes in HEEC activities in vitro, and may therefore have disturbing effects on endometrial angiogenesis.
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Affiliation(s)
- Malin Helmestam
- Department of Women's and Children's Health, Uppsala University, Uppsala SE-751 85, Sweden.
| | - Eva Davey
- Department of Women's and Children's Health, Uppsala University, Uppsala SE-751 85, Sweden
| | - Anneli Stavreus-Evers
- Department of Women's and Children's Health, Uppsala University, Uppsala SE-751 85, Sweden
| | - Matts Olovsson
- Department of Women's and Children's Health, Uppsala University, Uppsala SE-751 85, Sweden
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41
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Yang Y, Yang K, Li Y, Li X, Sun Q, Meng H, Zeng Y, Hu Y, Zhang Y. Decursin inhibited proliferation and angiogenesis of endothelial cells to suppress diabetic retinopathy via VEGFR2. Mol Cell Endocrinol 2013; 378:46-52. [PMID: 23684887 DOI: 10.1016/j.mce.2013.04.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Revised: 04/26/2013] [Accepted: 04/26/2013] [Indexed: 12/29/2022]
Abstract
Diabetes induces pathologic proliferation and angiogenesis in the retina that leads to catastrophic loss of vision. Decursin is a novel therapeutic that targets the vascular endothelial growth factor (VEGF) receptor (VEGFR) with putative anti-proliferative and anti-angiogenic activities. Thereby we utilized human retinal microvascular endothelial cells (HRMEC) and human umbilical vein endothelial cells (HUVEC) under conditions of excess glucose to explore dose-dependent responses of decursin on markers of migration, angiogenesis, and proliferation. Decursin dose-dependently inhibited tube formation, VEGFR-2 expression, along with relative metabolic activity and 5-bromo-2'-deoxy-uridine (BrdU) activity in both cell lines. We then correlated our findings to the streptozotocin-induced rat model of diabetes. Following three months of decursin treatment VEGFR-2 expression was significantly inhibited. Our data would suggest that decursin may be a potent anti-angiogenic and anti-proliferative agent targeting the VEGFR-2 signaling pathway, which significantly inhibits diabetic retinal neovascularization.
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Affiliation(s)
- Ying Yang
- Department of Endocrinology and Metabolism, Yunnan Province 2nd Hospital, Kunming 650031, China; Department of Internal Medicine, Division of Endocrinology, HSC Diabetes Center, University of Missouri, Columbia, MO 65201, USA; Laboratory for Conservation and Utilization of Bio-resources Yunnan University, Kunming 650021, China.
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42
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Nakajima Y, Nakamura Y, Shigeeda W, Tomoyasu M, Deguchi H, Tanita T, Yamauchi K. The role of tumor necrosis factor-α and interferon-γ in regulating angiomotin-like protein 1 expression in lung microvascular endothelial cells. Allergol Int 2013; 62:309-22. [PMID: 23793505 DOI: 10.2332/allergolint.12-oa-0528] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Accepted: 02/19/2013] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Angiogenesis in the alveolar septa is thought be a critical factor in pulmonary emphysema. Angiomotin-like protein 1 (AmotL1) is involved in angiogenesis via regulating endothelial cell function. However, the role of AmotL1 in the pathogenesis of pulmonary emphysema has not been elucidated. The objective of this study is to evaluate the expression of AmotL1 in lung tissues from a murine model with emphysema, as well as from patients with chronic obstructive pulmonary disease (COPD). Furthermore, we analyzed the regulation of AmotL1 expression by TNF-α and IFN-γ in endothelial cells in vitro. METHODS Nrf2 knockout mice were exposed to cigarette smoke (CS) for 4 weeks, and the down-regulated genes affecting vascularity in the whole lung were identified by microarray analysis. This analysis revealed that the mRNA expression of AmotL1 decreased in response to CS when compared with air exposure. To confirm the protein levels that were indicated in the microarray data, we determined the expression of AmotL1 in lung tissues obtained from patients with COPD and also determined the expression of AmotL1, NFκB and IκBα in cultured normal human lung microvascular endothelial cells (HLMVECs) that were stimulated by TNF-α and IFN-γ. RESULTS We found that the number of AmotL1-positive vessels decreased in the emphysema lungs compared with the normal and bronchial asthmatic lungs. IFN-γ pretreatment diminished the TNF-α-induced AmotL1 in the cultured HLMVECs by blocking the degradation of IκBα. CONCLUSIONS These results suggested that IFN-γ exhibits anti-angiogenesis effects by regulating the expression of TNF-α-induced AmotL1 via NFκB in emphysema lungs.
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Affiliation(s)
- Yoshio Nakajima
- Division of Pulmonary Medicine, Allergy, and Rheumatology, Department of Internal Medicine, Iwate Medical University School of Medicine, Iwate 020-8505, Japan
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43
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Joshi L, Tomkins-Netzer O, Menezo V, Sallam A, Kirkpatrick N, Lightman S, Taylor SRJ. Dexamethasone implants and neovascular glaucoma in central retinal vein occlusion. Acta Ophthalmol 2013; 91:e239-40. [PMID: 23241218 DOI: 10.1111/aos.12009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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44
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Donnelly SM, Nguyen BT, Rhyne S, Estes J, Jesmin S, Mowa CN. Vascular endothelial growth factor induces growth of uterine cervix and immune cell recruitment in mice. J Endocrinol 2013; 217:83-94. [PMID: 23386058 DOI: 10.1530/joe-12-0469] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Knowledge of uterine cervical epithelial biology and factors that influence its events may be critical in understanding the process of cervical remodeling (CR). Here, we examine the impact of exogenous vascular endothelial growth factor (VEGF) on uterine cervical epithelial growth in mice (nonpregnant and pregnant) treated with VEGF agents (recombinant and inhibitor) using a variety of morphological and molecular techniques. Exogenous VEGF altered various uterine cervical epithelial cellular events, including marked induction of growth, edema, increase in inter-epithelial paracellular space, and recruitment of immune cells to the outer surface of epithelial cells (cervical lumen). We conclude that VEGF induces multiple alterations in the uterine cervical epithelial tissues that may play a role in local immune surveillance and uterine cervical growth during CR.
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Affiliation(s)
- Siobhan M Donnelly
- Department of Biology, Appalachian State University, Rankin Science North Building N219, 572 River Street, Boone, North Carolina 28608, USA
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45
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Abstract
BACKGROUND Thyroid dysfunction is a well-known adverse effect of sunitinib, a drug that targets multiple receptor tyrosine kinases, including vascular endothelial growth factor receptor (VEGFR). As several kinds of tyrosine kinase inhibitors (TKIs) are now available, this has been postulated to be a side effect of the TKIs that target the VEGFR (VEGF-TKIs). However, sunitinib, one of the first-generation TKIs, likely causes thyroid dysfunction more frequently than other TKI classes, leading not only to hypothyroidism, but also to thyrotoxicosis. SUMMARY Based on the reports published to date, including our own studies, we have hypothesized that sunitinib may exert these effects, because it targets a broad spectrum of tyrosine kinases. This not only includes VEGFR2, but also VEGFR1 and the platelet-derived growth factor receptor (PDGFR). This, in turn, may suggest that not only VEGFR2 but also the PDGFR and/or the VEGFR1 play an important role during angiogenesis in the thyroid. CONCLUSIONS Our current hypothesis may explain the mechanisms that underlie TKI-induced thyroid disorders. By learning how various kinds of TKIs affect thyroid function, we may elucidate how the angiogenesis in thyroid is regulated both physiologically and pathologically.
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Affiliation(s)
- Noriko Makita
- Department of Endocrinology and Nephrology, School of Medicine, University of Tokyo, Tokyo, Japan.
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46
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Murdolo G, Sjöstrand M, Strindberg L, Lönnroth P, Jansson PA. The selective phosphodiesterase-5 inhibitor tadalafil induces microvascular and metabolic effects in type 2 diabetic postmenopausal females. J Clin Endocrinol Metab 2013; 98:245-54. [PMID: 23118430 DOI: 10.1210/jc.2012-1830] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
OBJECTIVE The objective of the study was to explore the acute in vivo effects of the selective phosphodiesterase-5 inhibitor tadalafil on local microcirculation and regional metabolism in skeletal muscle and adipose tissue (AT). DESIGN, SETTING, AND PARTICIPANTS We studied eight postmenopausal female patients with type 2 diabetes (T2D) and eight nondiabetic controls (Ctrl) in the postabsorptive state and 180 min after the administration of tadalafil 10 mg. Intramuscular and sc microdialysis were combined with measurements of forearm (FBF) and AT blood flow as well as with arterial and deep venous blood sampling. Muscle capillary recruitment, as ascertained by the permeability surface area product for glucose (PS(glu)), forearm glucose uptake (FGU), interstitial lactate, and glycerol concentrations, was measured. RESULTS When compared with Ctrl, T2D patients exhibited lower (P = 0.01) PS(glu) but similar FGU and FBF. After tadalafil, PS(glu) (P = 0.01) and muscle interstitial-arterial (I-A) lactate concentration gradient (P < 0.01) increased significantly in both groups, whereas FBF, FGU, and I-A glycerol remained unchanged. In AT, tadalafil did not significantly affect local blood flow, whereas the sc interstitial (I) lactate and I-A lactate concentrations increased (P < 0.01), and the I-A glycerol decreased in both groups. Finally, in multivariate analysis the PS(glu) was a strong and independent predictor of muscle glucose disposal (β: 0.737 and 0.963, P < 0.05, in Ctrl and T2D, respectively). CONCLUSIONS Tadalafil emerges as an acutely acting modulator of microvascular recruitment and glucose metabolism in skeletal muscle and adipose tissue. We suggest that selective phosphodiesterase-5 blockade may provide a path forward to new therapeutics in the setting of insulin resistance.
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Affiliation(s)
- Giuseppe Murdolo
- Department of Internal Medicine, Diabetes, Endocrinology, and Obesity, Assisi Hospital, V. Muller 1, I-06081 Assisi (Perugia), Italy.
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47
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Yu KN, Kim JE, Seo HW, Chae C, Cho MH. Differential toxic responses between pristine and functionalized multiwall nanotubes involve induction of autophagy accumulation in murine lung. J Toxicol Environ Health A 2013; 76:1282-1292. [PMID: 24283420 DOI: 10.1080/15287394.2013.850137] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Carbon nanotubes (CNT) are becoming commonly used in industrial applications. However, the toxicity associated with this material remains to be established. The aim of this study was to investigate the potential toxic mechanisms associated with multiwall carbon nanotubes (MWCNT) in normal mouse lung. A total of 100 μg of two types of MWCNT, namely, pristine MWCNT (PMWCNT) and acid-treated-MWCNT (TMWCNT), was administered to male C57BL/6 mice via intratracheal (IT) instillation for a period of 6 mo. Our results indicated that PMWCNT induced pulmonary autophagy accumulation and resulted in more potent tumorigenic effects compared to TMWCNT. Accordingly, MWCNT may exert differential toxicity attributed to various physicochemical properties. Data emphasize the need for careful regulation of production and use of CNT.
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Affiliation(s)
- Kyeong-Nam Yu
- a Laboratory of Toxicology, College of Veterinary Medicine , Seoul National University , Seoul , Korea
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48
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Bharathi SP, Raj HM, Jain S, Banerjee BD, Ahmed T, Arora VK. Role of pesticides in the induction of tumor angiogenesis. Anticancer Res 2013; 33:231-240. [PMID: 23267150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Due to their estrogen-mimicking ability, pesticides are considered as prime etiological suspects of increasing tumor incidence, although a direct link is still undefined. The present study aimed to identify the effect of xenoestrogens (lindane, propoxur and endosulfan) at 20 mg/l each on tumorigenesis, by evaluating endothelial cell proliferation, H(3) thymidine incorporation, wound healing, ascites formation and secretion, shell less Chorio Allantoic Membrane (CAM) formation using in vitro, as well as in vivo, models. The genotoxic effect of xenoestrogens in terms of DNA damage was also studied. The results showed that the endothelial cell proliferation, H(3) thymidine incorporation, wound healing, CAM formation were increased following xenoestrogen exposure, but the intensity of angiogenesis was dependent on the structural homology of these xenoestrogens to endogenous estrogen. Moreover, lindane was the most potent angiogenesis stimulator followed by propoxur and Endosulfan. Further studies were undertaken to examine lindane for its possible carcinogenicity. However, no effect was observed on the integrity of DNA after exposure to these xenoestrogens.
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Affiliation(s)
- Salimath P Bharathi
- Room no. 237, Environmental Biochemistry and Molecular Biology Laboratory, Department of Biochemistry, University College of Medical Sciences (University of Delhi) and GTB Hospital, Dilshad Garden, New Delhi-110095, India
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Lichtenauer M, Mildner M, Werba G, Beer L, Hoetzenecker K, Baumgartner A, Hasun M, Nickl S, Mitterbauer A, Zimmermann M, Gyöngyösi M, Podesser BK, Klepetko W, Ankersmit HJ. Anti-thymocyte globulin induces neoangiogenesis and preserves cardiac function after experimental myocardial infarction. PLoS One 2012; 7:e52101. [PMID: 23284885 PMCID: PMC3527351 DOI: 10.1371/journal.pone.0052101] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2012] [Accepted: 11/09/2012] [Indexed: 12/24/2022] Open
Abstract
Rationale Acute myocardial infarction (AMI) followed by ventricular remodeling is the major cause of congestive heart failure and death in western world countries. Objective Of relevance are reports showing that infusion of apoptotic leucocytes or anti-lymphocyte serum after AMI reduces myocardial necrosis and preserves cardiac function. In order to corroborate this therapeutic mechanism, the utilization of an immunosuppressive agent with a comparable mechanism, such as anti-thymocyte globulin (ATG) was evaluated in this study. Methods and Results AMI was induced in rats by ligation of the left anterior descending artery. Initially after the onset of ischemia, rabbit ATG (10 mg/rat) was injected intravenously. In vitro and in vivo experiments showed that ATG induced a pronounced release of pro-angiogenic and chemotactic factors. Moreover, paracrine factors released from ATG co-incubated cell cultures conferred a down-regulation of p53 in cardiac myocytes. Rats that were injected with ATG evidenced higher numbers of CD68+ macrophages in the ischemic myocardium. Animals injected with ATG evidenced less myocardial necrosis, showed a significant reduction of infarct dimension and an improvement of post-AMI remodeling after six weeks (infarct dimension 24.9% vs. 11.4%, p<0.01). Moreover, a higher vessel density in the peri-infarct region indicated a better collateralization in rats that were injected with ATG. Conclusions These data indicate that ATG, a therapeutic agent successfully applied in clinical transplant immunology, triggered cardioprotective effects after AMI that salvaged ischemic myocardium by down-regulation of p53. This might have raised the resistance against apoptotic cell death during ischemia. The combination of these mechanisms seems to be causative for improved cardiac function and less ventricular remodeling after experimental AMI.
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Affiliation(s)
- Michael Lichtenauer
- Clinic of Internal Medicine I, Department of Cardiology, University Hospital Jena, Jena, Germany
- Christian Doppler Laboratory for Cardiac and Thoracic Diagnosis and Regeneration, Vienna, Austria
| | - Michael Mildner
- Department of Dermatology, Medical University Vienna, Vienna, Austria
| | - Gregor Werba
- Christian Doppler Laboratory for Cardiac and Thoracic Diagnosis and Regeneration, Vienna, Austria
- Department of Thoracic Surgery, Medical University Vienna, Vienna, Austria
| | - Lucian Beer
- Christian Doppler Laboratory for Cardiac and Thoracic Diagnosis and Regeneration, Vienna, Austria
- Department of Thoracic Surgery, Medical University Vienna, Vienna, Austria
| | - Konrad Hoetzenecker
- Christian Doppler Laboratory for Cardiac and Thoracic Diagnosis and Regeneration, Vienna, Austria
- Department of Thoracic Surgery, Medical University Vienna, Vienna, Austria
| | | | - Matthias Hasun
- Ludwig Boltzmann Cluster for Cardiovascular Research, Vienna, Austria
| | - Stefanie Nickl
- Christian Doppler Laboratory for Cardiac and Thoracic Diagnosis and Regeneration, Vienna, Austria
- Department of Thoracic Surgery, Medical University Vienna, Vienna, Austria
| | - Andreas Mitterbauer
- Christian Doppler Laboratory for Cardiac and Thoracic Diagnosis and Regeneration, Vienna, Austria
- Department of Thoracic Surgery, Medical University Vienna, Vienna, Austria
| | - Matthias Zimmermann
- Christian Doppler Laboratory for Cardiac and Thoracic Diagnosis and Regeneration, Vienna, Austria
- Department of Thoracic Surgery, Medical University Vienna, Vienna, Austria
| | - Mariann Gyöngyösi
- Department of Cardiology, Medical University Vienna, Vienna, Austria
| | | | - Walter Klepetko
- Department of Thoracic Surgery, Medical University Vienna, Vienna, Austria
| | - Hendrik Jan Ankersmit
- Christian Doppler Laboratory for Cardiac and Thoracic Diagnosis and Regeneration, Vienna, Austria
- Department of Thoracic Surgery, Medical University Vienna, Vienna, Austria
- * E-mail:
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Shikatani EA, Trifonova A, Mandel ER, Liu STK, Roudier E, Krylova A, Szigiato A, Beaudry J, Riddell MC, Haas TL. Inhibition of proliferation, migration and proteolysis contribute to corticosterone-mediated inhibition of angiogenesis. PLoS One 2012; 7:e46625. [PMID: 23056375 PMCID: PMC3462789 DOI: 10.1371/journal.pone.0046625] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Accepted: 09/07/2012] [Indexed: 12/21/2022] Open
Abstract
The angiostatic nature of pharmacological doses of glucocorticoid steroids is well known. However, the consequences of pathophysiological elevation of endogenous glucocorticoids are not well established. In the current study, we hypothesized that the angiostatic effect of corticosterone, an endogenous glucocorticoid in rodents, occurs through multi-faceted alterations in skeletal muscle microvascular endothelial cell proliferation, migration, and proteolysis. Chronic corticosterone treatment significantly reduced the capillary to fiber ratio in the tibialis anterior muscle compared to that of placebo-treated rats. Corticosterone inhibited endothelial cell sprouting from capillary segments ex vivo. Similarly, 3-dimensional endothelial cell spheroids treated with corticosterone for 48 hours showed evidence of sprout regression and reduced sprout length. Endothelial cell proliferation was reduced in corticosterone treated cells, coinciding with elevated FoxO1 and reduced VEGF production. Corticosterone treated endothelial cells exhibited reduced migration, which correlated with a reduction in RhoA activity. Furthermore, corticosterone treated endothelial cells in both 3-dimensional and monolayer cultures had decreased MMP-2 production and activation resulting in decreased proteolysis by endothelial cells, limiting their angiogenic potential. Promoter assays revealed that corticosterone treatment transcriptionally repressed MMP-2, which may map to a predicted GRE between -1510 and -1386 bp of the MMP-2 promoter. Additionally, Sp1, a known transcriptional activator of MMP-2 was decreased following corticosterone treatment. This study provides new insights into the mechanisms by which pathophysiological levels of endogenous glucocorticoids may exert angiostatic effects.
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Affiliation(s)
- Eric A. Shikatani
- School of Kinesiology and Health Science, York University, Toronto, Ontario, Canada
- Muscle Health Research Centre, York University, Toronto, Ontario, Canada
| | - Anastassia Trifonova
- Department of Biology, York University, Toronto, Ontario, Canada
- Muscle Health Research Centre, York University, Toronto, Ontario, Canada
| | - Erin R. Mandel
- School of Kinesiology and Health Science, York University, Toronto, Ontario, Canada
| | - Sammy T. K. Liu
- School of Kinesiology and Health Science, York University, Toronto, Ontario, Canada
| | - Emilie Roudier
- School of Kinesiology and Health Science, York University, Toronto, Ontario, Canada
| | - Anna Krylova
- Department of Biology, York University, Toronto, Ontario, Canada
| | - Andrei Szigiato
- School of Kinesiology and Health Science, York University, Toronto, Ontario, Canada
| | - Jacqueline Beaudry
- School of Kinesiology and Health Science, York University, Toronto, Ontario, Canada
- Muscle Health Research Centre, York University, Toronto, Ontario, Canada
| | - Michael C. Riddell
- School of Kinesiology and Health Science, York University, Toronto, Ontario, Canada
- Muscle Health Research Centre, York University, Toronto, Ontario, Canada
| | - Tara L. Haas
- School of Kinesiology and Health Science, York University, Toronto, Ontario, Canada
- Department of Biology, York University, Toronto, Ontario, Canada
- Muscle Health Research Centre, York University, Toronto, Ontario, Canada
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