101
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Hassanpour M, Rezabakhsh A, Rahbarghazi R, Nourazarian A, Nouri M, Avci ÇB, Ghaderi S, Alidadyani N, Bagca BG, Bagheri HS. Functional convergence of Akt protein with VEGFR-1 in human endothelial progenitor cells exposed to sera from patient with type 2 diabetes mellitus. Microvasc Res 2017; 114:101-113. [PMID: 28732797 DOI: 10.1016/j.mvr.2017.07.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 06/27/2017] [Accepted: 07/17/2017] [Indexed: 11/18/2022]
Abstract
Diabetes mellitus type 2 predisposes patients to various microvascular complications. In the current experiment, the potent role of diabetes mellitus was investigated on the content of VEGFR-1, -2, Tie-1 and -2, and Akt in human endothelial progenitor cells. The gene expression profile of mTOR and Hedgehog signaling pathways were measured by PCR array. The possible crosstalk between RTKs, mTOR and Hedgehog signaling was also studied by bioinformatic analysis. Endothelial progenitor cells were incubated with serum from normal and diabetic for 7days. Compared to non-treated cells, diabetic serum-induced cell apoptosis (~2-fold) and prohibited cell migration toward bFGF (p<0.001). ELISA analysis showed that diabetes exposed cells had increased abundance of Tie-1, -2 and VEGFR-2 and reduced amount of VEGFR-1 (p<0.0001) in diabetic cells. Western blotting showed a marked reduction in the protein level of Akt after cells exposure to serum from diabetic subjects (p<0.0001). PCR array revealed a significant stimulation of both mTOR and Hedgehog signaling pathways in diabetic cells (p<0.05). According to data from bioinformatic datasets, we showed VEGFR-1, -2 and Tie-2, but not Tie-1, are master regulators of angiogenesis. There is a crosstalk between RTKs and mTOR signaling by involving P62, GABARAPL1, and HTT genes. It seems that physical interaction and co-expression of Akt decreased the level of VEGFR-1 in diabetic cells. Regarding data from the present experiment, diabetic serum contributed to uncontrolled induction of both mTOR and Hedgehog signaling in endothelial progenitor cells. Diabetes mellitus induces mTOR pathway by involving receptor tyrosine kinases while Hedgehog stimulation is independent of these receptors.
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Affiliation(s)
- Mehdi Hassanpour
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Applied Cell Sciences, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Aysa Rezabakhsh
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Reza Rahbarghazi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Applied Cell Sciences, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Alireza Nourazarian
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Biochemistry and Clinical Laboratories, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Mohammad Nouri
- Department of Biochemistry and Clinical Laboratories, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Çığır Biray Avci
- Faculty of Medicine, Department of Medical Biology, Ege University, Izmir, Turkey.
| | - Shahrooz Ghaderi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Molecular Medicine, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Neda Alidadyani
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Bakiye Goker Bagca
- Faculty of Medicine, Department of Medical Biology, Ege University, Izmir, Turkey
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102
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Gonzalez-King H, García NA, Ontoria-Oviedo I, Ciria M, Montero JA, Sepúlveda P. Hypoxia Inducible Factor-1α Potentiates Jagged 1-Mediated Angiogenesis by Mesenchymal Stem Cell-Derived Exosomes. Stem Cells 2017; 35:1747-1759. [PMID: 28376567 DOI: 10.1002/stem.2618] [Citation(s) in RCA: 254] [Impact Index Per Article: 36.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 03/05/2017] [Accepted: 03/10/2017] [Indexed: 12/13/2022]
Abstract
Insufficient vessel growth associated with ischemia remains an unresolved issue in vascular medicine. Mesenchymal stem cells (MSCs) have been shown to promote angiogenesis via a mechanism that is potentiated by hypoxia. Overexpression of hypoxia inducible factor (HIF)-1α in MSCs improves their therapeutic potential by inducing angiogenesis in transplanted tissues. Here, we studied the contribution of exosomes released by HIF-1α-overexpressing donor MSCs (HIF-MSC) to angiogenesis by endothelial cells. Exosome secretion was enhanced in HIF-MSC. Omics analysis of miRNAs and proteins incorporated into exosomes pointed to the Notch pathway as a candidate mediator of exosome communication. Interestingly, we found that Jagged1 was the sole Notch ligand packaged into MSC exosomes and was more abundant in HIF-MSC than in MSC controls. The addition of Jagged1-containing exosomes from MSC and HIF-MSC cultures to endothelial cells triggered transcriptional changes in Notch target genes and induced angiogenesis in an in vitro model of capillary-like tube formation, and both processes were stimulated by HIF-1α. Finally, subcutaneous injection of Jagged 1-containing exosomes from MSC and HIF-MSC cultures in the Matrigel plug assay induced angiogenesis in vivo, which was more robust when they were derived from HIF-MSC cultures. All Jagged1-mediated effects could be blocked by prior incubation of exosomes with an anti-Jagged 1 antibody. All together, the results indicate that exosomes derived from MSCs stably overexpressing HIF-1α have an increased angiogenic capacity in part via an increase in the packaging of Jagged1, which could have potential applications for the treatment of ischemia-related disease. Stem Cells 2017;35:1747-1759.
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Affiliation(s)
- Hernán Gonzalez-King
- Regenerative Medicine and Heart Transplantation Unit, Instituto de Investigación Sanitaria La Fe, Valencia, Spain
- Joint Unit for cardiovascular Repair Instituto de Investigación Sanitaria La Fe-Centro de Investigación Príncipe Felipe, Valencia, Spain
| | - Nahuel A García
- Regenerative Medicine and Heart Transplantation Unit, Instituto de Investigación Sanitaria La Fe, Valencia, Spain
- Joint Unit for cardiovascular Repair Instituto de Investigación Sanitaria La Fe-Centro de Investigación Príncipe Felipe, Valencia, Spain
| | - Imelda Ontoria-Oviedo
- Regenerative Medicine and Heart Transplantation Unit, Instituto de Investigación Sanitaria La Fe, Valencia, Spain
- Joint Unit for cardiovascular Repair Instituto de Investigación Sanitaria La Fe-Centro de Investigación Príncipe Felipe, Valencia, Spain
| | - María Ciria
- Regenerative Medicine and Heart Transplantation Unit, Instituto de Investigación Sanitaria La Fe, Valencia, Spain
- Joint Unit for cardiovascular Repair Instituto de Investigación Sanitaria La Fe-Centro de Investigación Príncipe Felipe, Valencia, Spain
| | - José Anastasio Montero
- Regenerative Medicine and Heart Transplantation Unit, Instituto de Investigación Sanitaria La Fe, Valencia, Spain
- Joint Unit for cardiovascular Repair Instituto de Investigación Sanitaria La Fe-Centro de Investigación Príncipe Felipe, Valencia, Spain
| | - Pilar Sepúlveda
- Regenerative Medicine and Heart Transplantation Unit, Instituto de Investigación Sanitaria La Fe, Valencia, Spain
- Joint Unit for cardiovascular Repair Instituto de Investigación Sanitaria La Fe-Centro de Investigación Príncipe Felipe, Valencia, Spain
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103
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Salehi A, Zhang JH, Obenaus A. Response of the cerebral vasculature following traumatic brain injury. J Cereb Blood Flow Metab 2017; 37:2320-2339. [PMID: 28378621 PMCID: PMC5531360 DOI: 10.1177/0271678x17701460] [Citation(s) in RCA: 179] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The critical role of the vasculature and its repair in neurological disease states is beginning to emerge particularly for stroke, dementia, epilepsy, Parkinson's disease, tumors and others. However, little attention has been focused on how the cerebral vasculature responds following traumatic brain injury (TBI). TBI often results in significant injury to the vasculature in the brain with subsequent cerebral hypoperfusion, ischemia, hypoxia, hemorrhage, blood-brain barrier disruption and edema. The sequalae that follow TBI result in neurological dysfunction across a host of physiological and psychological domains. Given the importance of restoring vascular function after injury, emerging research has focused on understanding the vascular response after TBI and the key cellular and molecular components of vascular repair. A more complete understanding of vascular repair mechanisms are needed and could lead to development of new vasculogenic therapies, not only for TBI but potentially vascular-related brain injuries. In this review, we delineate the vascular effects of TBI, its temporal response to injury and putative biomarkers for arterial and venous repair in TBI. We highlight several molecular pathways that may play a significant role in vascular repair after brain injury.
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Affiliation(s)
- Arjang Salehi
- 1 Cell, Molecular and Developmental Biology Program, University of California, Riverside, CA, USA.,2 Department of Pediatrics, Loma Linda University, Loma Linda, CA, USA
| | - John H Zhang
- 3 Department of Physiology and Pharmacology Loma Linda University School of Medicine, CA, USA.,4 Department of Anesthesiology Loma Linda University School of Medicine, CA, USA.,5 Department of Neurosurgery, Loma Linda University School of Medicine, Loma Linda, CA, USA
| | - Andre Obenaus
- 1 Cell, Molecular and Developmental Biology Program, University of California, Riverside, CA, USA.,2 Department of Pediatrics, Loma Linda University, Loma Linda, CA, USA.,6 Department of Pediatrics, University of California, Irvine, Irvine, CA, USA
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104
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Okamoto A, Sumi C, Tanaka H, Kusunoki M, Iwai T, Nishi K, Matsuo Y, Harada H, Takenaga K, Bono H, Hirota K. HIF-1-mediated suppression of mitochondria electron transport chain function confers resistance to lidocaine-induced cell death. Sci Rep 2017. [PMID: 28630416 PMCID: PMC5476559 DOI: 10.1038/s41598-017-03980-7] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The local anesthetic lidocaine induces cell death by altering reactive oxygen species (ROS) generation and mitochondrial electron transport chain function. Because hypoxia-inducible factor 1 (HIF-1) is involved in determining oxygen metabolism and mitochondria function, we investigated the involvement of HIF-1 activity in lidocaine-induced cell death. We investigated the role of HIF activation on lidocaine-induced caspase activation and cell death in renal cell-derived RCC4 cells lacking functional von Hippel-Lindau (VHL) protein. We demonstrate that HIF-1 suppressed oxygen consumption and facilitated glycolysis in a pyruvate dehydrogenase kinase-1-dependent manner and that activation of HIF-1 conferred resistance to lidocaine-induced cell death. We also demonstrated that exogenous HIF-1 activation, through HIFα-hydroxylase inhibition or exposure to hypoxic conditions, alleviates lidocaine toxicity by suppressing mitochondria function and generating ROS, not only in RCC4 cells, but also in the neuronal SH-SY5Y cells. In conclusion, we demonstrate that HIF-1 activation due to VHL deletion, treatment with small molecule HIFα-hydroxylase inhibitors, and exposure to hypoxic conditions suppresses mitochondrial respiratory chain function and confers resistance to lidocaine toxicity.
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Affiliation(s)
- Akihisa Okamoto
- Department of Anesthesiology, Kansai Medical University, Hirakata, Japan.,Department of Human Stress Response Science, Institute of Biomedical Science, Kansai Medical University, Hirakata, Japan
| | - Chisato Sumi
- Department of Anesthesiology, Kansai Medical University, Hirakata, Japan.,Department of Human Stress Response Science, Institute of Biomedical Science, Kansai Medical University, Hirakata, Japan
| | - Hiromasa Tanaka
- Department of Human Stress Response Science, Institute of Biomedical Science, Kansai Medical University, Hirakata, Japan
| | - Munenori Kusunoki
- Department of Anesthesiology, Kansai Medical University, Hirakata, Japan.,Department of Human Stress Response Science, Institute of Biomedical Science, Kansai Medical University, Hirakata, Japan
| | - Teppei Iwai
- Department of Anesthesiology, Kansai Medical University, Hirakata, Japan
| | - Kenichiro Nishi
- Department of Anesthesiology, Kansai Medical University, Hirakata, Japan
| | - Yoshiyuki Matsuo
- Department of Human Stress Response Science, Institute of Biomedical Science, Kansai Medical University, Hirakata, Japan
| | - Hiroshi Harada
- Laboratory of Cancer Cell Biology, Radiation Biology Center, Kyoto University, Kyoto, Japan.,Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), Saitama, Japan
| | - Keizo Takenaga
- Department of Life Science, Shimane University Faculty of Medicine, Izmo, Japan
| | - Hidemasa Bono
- Database Center for Life Science (DBCLS), Research Organization of Information and Systems (ROIS), Mishima, Japan
| | - Kiichi Hirota
- Department of Human Stress Response Science, Institute of Biomedical Science, Kansai Medical University, Hirakata, Japan.
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105
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Zhang B, Chamba Y, Shang P, Wang Z, Ma J, Wang L, Zhang H. Comparative transcriptomic and proteomic analyses provide insights into the key genes involved in high-altitude adaptation in the Tibetan pig. Sci Rep 2017. [PMID: 28623314 PMCID: PMC5473931 DOI: 10.1038/s41598-017-03976-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Tibetan pigs that inhabit the Tibetan Plateau exhibit striking phenotypic and physiological differences from lowland pigs, and have adapted well to extreme conditions. However, the mechanisms involved in regulating gene expression at high altitude in these animals are not fully understood. In this study, we obtained transcriptomic and proteomic data from the heart tissues of Tibetan and Yorkshire pigs raised in the highlands (TH and YH) and lowlands (TL and YL) via RNA-seq and iTRAQ (isobaric tags for relative and absolute quantitation) analyses, respectively. Comparative analyses of TH vs. YH, TH vs.TL, TL vs. YL, and YH vs. YL yielded 299, 169, 242, and 368 differentially expressed genes (DEGs), and 473, 297, 394, and 297 differentially expressed proteins (DEPs), respectively. By functional annotation of these DEGs and DEPs, genes that were enriched in the HIF-1 signaling pathway (NPPA, ERK2, ENO3, and EGLN3), VEGF signaling pathway (ERK2, A2M, FGF1, CTGF, and DPP4), and hypoxia-related processes (CRYAB, EGLN3, TGFB2, DPP4, and ACE) were identified as important candidate genes for high-altitude adaptation in the Tibetan pig. This study enhances our understanding of the molecular mechanisms involved in hypoxic adaptation in pigs, and furthers our understanding of human hypoxic diseases.
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Affiliation(s)
- Bo Zhang
- National Engineering Laboratory for Animal Breeding, China Agricultural University, No. 2 Yuanmingyuan West Rd., Beijing, 100193, China
| | - Yangzom Chamba
- Tibet Agriculture and Animal Husbandry College, Linzhi, Tibet, 860000, China
| | - Peng Shang
- National Engineering Laboratory for Animal Breeding, China Agricultural University, No. 2 Yuanmingyuan West Rd., Beijing, 100193, China.,Tibet Agriculture and Animal Husbandry College, Linzhi, Tibet, 860000, China
| | - Zhixiu Wang
- National Engineering Laboratory for Animal Breeding, China Agricultural University, No. 2 Yuanmingyuan West Rd., Beijing, 100193, China
| | - Jun Ma
- National Engineering Laboratory for Animal Breeding, China Agricultural University, No. 2 Yuanmingyuan West Rd., Beijing, 100193, China
| | - Liyuang Wang
- National Engineering Laboratory for Animal Breeding, China Agricultural University, No. 2 Yuanmingyuan West Rd., Beijing, 100193, China
| | - Hao Zhang
- National Engineering Laboratory for Animal Breeding, China Agricultural University, No. 2 Yuanmingyuan West Rd., Beijing, 100193, China.
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106
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Stallone G, Matteo M, Netti GS, Infante B, Di Lorenzo A, Prattichizzo C, Carlucci S, Trezza F, Gesualdo L, Greco P, Grandaliano G. Semaphorin 3F expression is reduced in pregnancy complicated by preeclampsia. An observational clinical study. PLoS One 2017; 12:e0174400. [PMID: 28350837 PMCID: PMC5370113 DOI: 10.1371/journal.pone.0174400] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Accepted: 03/08/2017] [Indexed: 12/22/2022] Open
Abstract
Background and objective Preeclampsia is a systemic disorder, affecting 2–10% of pregnancies, characterized by a deregulated pro- and anti-angiogenic balance. Semaphorin 3F is an angiogenesis inhibitor. We aimed to investigate whether semaphorin 3F expression is modulated in preeclampsia. Design, setting, participants, and measurements We performed two observational single center cohort studies between March 2013 and August 2014. In the first we enrolled 110 consecutive women, undergoing an elective cesarean section; in the second we included 150 consecutive women undergoing amniocentesis for routine clinical indications at 16–18 week of gestation. Semaphorin 3F concentration was evaluated in maternal peripheral blood, venous umbilical blood and amniotic fluid, along with its placenta protein expression at the time of delivery in the first study group and in the amniotic fluid at 16–18 weeks of gestation in the second study group. Results In the first study 19 patients presented at delivery with preeclampsia. Semaphorin 3F placenta tissue expression was significantly reduced in preeclampsia. In addition, semaphorin 3F level at delivery was significantly lower in serum, amniotic fluid and venous umbilical blood of preeclamptic patients compared with normal pregnant women. In the prospective cohort study 14 women developed preeclampsia. In this setting, semaphorin 3F amniotic level at 16–18 weeks of gestation was reduced in women who subsequently developed preeclampsia compared to women with a normal pregnancy. ROC curve analysis showed that semaphorin 3F amniotic levels could identify women at higher risk of preeclampsia. Conclusions Semaphorin 3F might represent a predictive biomarker of preeclampsia.
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Affiliation(s)
- Giovanni Stallone
- Nephrology Dialysis and Transplantation Unit, Dept. of Medical and Surgical Sciences, University of Foggia, Viale Luigi Pinto, 1, Foggia, Italy
| | - Maria Matteo
- Gynaecologic and Obstetric Unit, Dept. of Medical and Surgical Sciences, University of Foggia, Viale Luigi Pinto, 1, Foggia, Italy
| | - Giuseppe Stefano Netti
- Clinical Pathology Unit, Dept. of Medical and Surgical Sciences, University of Foggia, Viale Luigi Pinto, 1, Foggia, Italy
| | - Barbara Infante
- Nephrology Dialysis and Transplantation Unit, Dept. of Medical and Surgical Sciences, University of Foggia, Viale Luigi Pinto, 1, Foggia, Italy
| | - Adelaide Di Lorenzo
- Nephrology Dialysis and Transplantation Unit, Dept. of Medical and Surgical Sciences, University of Foggia, Viale Luigi Pinto, 1, Foggia, Italy
| | - Clelia Prattichizzo
- Nephrology Dialysis and Transplantation Unit, Dept. of Medical and Surgical Sciences, University of Foggia, Viale Luigi Pinto, 1, Foggia, Italy
| | - Stefania Carlucci
- Gynaecologic and Obstetric Unit, Dept. of Medical and Surgical Sciences, University of Foggia, Viale Luigi Pinto, 1, Foggia, Italy
| | - Federica Trezza
- Gynaecologic and Obstetric Unit, Dept. of Medical and Surgical Sciences, University of Foggia, Viale Luigi Pinto, 1, Foggia, Italy
| | - Loreto Gesualdo
- Nephrology Dialysis and Transplantation Unit, Dept. of Emergency and Organ Transplantation, University of Bari “A. Moro”, Piazza G. Cesare 11, Bari, Italy
| | - Pantaleo Greco
- Gynaecologic and Obstetric Unit, Dept. of Medical and Surgical Sciences, University of Foggia, Viale Luigi Pinto, 1, Foggia, Italy
| | - Giuseppe Grandaliano
- Nephrology Dialysis and Transplantation Unit, Dept. of Medical and Surgical Sciences, University of Foggia, Viale Luigi Pinto, 1, Foggia, Italy
- * E-mail:
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107
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Salhiyyah K, Sarathchandra P, Latif N, Yacoub MH, Chester AH. Hypoxia-mediated regulation of the secretory properties of mitral valve interstitial cells. Am J Physiol Heart Circ Physiol 2017; 313:H14-H23. [PMID: 28314761 DOI: 10.1152/ajpheart.00720.2016] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 03/14/2017] [Accepted: 03/14/2017] [Indexed: 11/22/2022]
Abstract
The sophisticated function of the mitral valve depends to a large extent on its extracellular matrix (ECM) and specific cellular components. These are tightly regulated by a repertoire of mechanical stimuli and biological pathways. One potentially important stimulus is hypoxia. The purpose of this investigation is to determine the effect of hypoxia on the regulation of mitral valve interstitial cells (MVICs) with respect to the synthesis and secretion of extracellular matrix proteins. Hypoxia resulted in reduced production of total collagen and sulfated glycosaminoglycans (sGAG) in cultured porcine MVICs. Increased gene expression of matrix metalloproteinases-1 and -9 and their tissue inhibitors 1 and 2 was also observed after incubation under hypoxic conditions for up to 24 h. Hypoxia had no effect on MVIC viability, morphology, or phenotype. MVICs expressed hypoxia-inducible factor (HIF)-1α under hypoxia. Stimulating HIF-1α chemically caused a reduction in the amount of sGAG produced, similar to the effect observed under hypoxia. Human rheumatic valves had greater expression of HIF-1α compared with normal or myxomatous degenerated valves. In conclusion, hypoxia affects the production of certain ECM proteins and expression of matrix remodeling enzymes by MVICs. The effects of hypoxia appear to correlate with the induction of HIF-1α. This study highlights a potential role of hypoxia and HIF-1α in regulating the mitral valve, which could be important in health and disease.NEW & NOTEWORTHY This study demonstrates that hypoxia regulates extracellular matrix secretion and the remodeling potential of heart valve interstitial cells. Expression of hypoxia-induced factor-1α plays a role in these effects. These data highlight the potential role of hypoxia as a physiological mediator of the complex function of heart valve cells.
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Affiliation(s)
- Kareem Salhiyyah
- National Heart & Lung Institute, Imperial College London, Heart Science Centre, Harefield, Middlesex, United Kingdom
| | - Padmini Sarathchandra
- National Heart & Lung Institute, Imperial College London, Heart Science Centre, Harefield, Middlesex, United Kingdom
| | - Najma Latif
- National Heart & Lung Institute, Imperial College London, Heart Science Centre, Harefield, Middlesex, United Kingdom
| | - Magdi H Yacoub
- National Heart & Lung Institute, Imperial College London, Heart Science Centre, Harefield, Middlesex, United Kingdom
| | - Adrian H Chester
- National Heart & Lung Institute, Imperial College London, Heart Science Centre, Harefield, Middlesex, United Kingdom
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108
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Formanowicz D, Radom M, Zawierucha P, Formanowicz P. Petri net-based approach to modeling and analysis of selected aspects of the molecular regulation of angiogenesis. PLoS One 2017; 12:e0173020. [PMID: 28253310 PMCID: PMC5333880 DOI: 10.1371/journal.pone.0173020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Accepted: 02/14/2017] [Indexed: 11/18/2022] Open
Abstract
The functioning of both normal and pathological tissues depends on an adequate supply of oxygen through the blood vessels. A process called angiogenesis, in which new endothelial cells and smooth muscles interact with each other, forming new blood vessels either from the existing ones or from a primary vascular plexus, is particularly important and interesting, due to new therapeutic possibilities it offers. This is a multi-step and very complex process, so an accurate understanding of the underlying mechanisms is a significant task, especially in recent years, with the constantly increasing amount of new data that must be taken into account. A systems approach is necessary for these studies because it is not sufficient to analyze the properties of the building blocks separately and an analysis of the whole network of interactions is essential. This approach is based on building a mathematical model of the system, while the model is expressed in the formal language of a mathematical theory. Recently, the theory of Petri nets was shown to be especially promising for the modeling and analysis of biological phenomena. This analysis, based mainly on t-invariants, has led to a particularly important finding that a direct link (close connection) exist between transforming growth factor β1 (TGF-β1), endothelial nitric oxide synthase (eNOS), nitric oxide (NO), and hypoxia-inducible factor 1, the molecules that play a crucial roles during angiogenesis. We have shown that TGF-β1 may participate in the inhibition of angiogenesis through the upregulation of eNOS expression, which is responsible for catalyzing NO production. The results obtained in the previous studies, concerning the effects of NO on angiogenesis, have not been conclusive, and therefore, our study may contribute to a better understanding of this phenomenon.
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Affiliation(s)
- Dorota Formanowicz
- Department of Clinical Biochemistry and Laboratory Medicine, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznań, Poland
| | - Marcin Radom
- Institute of Computing Science, Poznan University of Technology, Piotrowo 2, 60-965 Poznań, Poland
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Z. Noskowskiego 12/14, 61-704 Poznań, Poland
| | - Piotr Zawierucha
- Department of Histology and Embryology, Poznan University of Medical Sciences, Świȩcickiego 6 St., 61-781 Poznań, Poland
- Department of Anatomy, Poznan University of Medical Sciences, Świȩcickiego 6, 61-781 Poznań, Poland
| | - Piotr Formanowicz
- Institute of Computing Science, Poznan University of Technology, Piotrowo 2, 60-965 Poznań, Poland
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Z. Noskowskiego 12/14, 61-704 Poznań, Poland
- * E-mail:
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109
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Camaré C, Pucelle M, Nègre-Salvayre A, Salvayre R. Angiogenesis in the atherosclerotic plaque. Redox Biol 2017; 12:18-34. [PMID: 28212521 PMCID: PMC5312547 DOI: 10.1016/j.redox.2017.01.007] [Citation(s) in RCA: 255] [Impact Index Per Article: 36.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 01/04/2017] [Accepted: 01/05/2017] [Indexed: 12/12/2022] Open
Abstract
Atherosclerosis is a multifocal alteration of the vascular wall of medium and large arteries characterized by a local accumulation of cholesterol and non-resolving inflammation. Atherothrombotic complications are the leading cause of disability and mortality in western countries. Neovascularization in atherosclerotic lesions plays a major role in plaque growth and instability. The angiogenic process is mediated by classical angiogenic factors and by additional factors specific to atherosclerotic angiogenesis. In addition to its role in plaque progression, neovascularization may take part in plaque destabilization and thromboembolic events. Anti-angiogenic agents are effective to reduce atherosclerosis progression in various animal models. However, clinical trials with anti-angiogenic drugs, mainly anti-VEGF/VEGFR, used in anti-cancer therapy show cardiovascular adverse effects, and require additional investigations.
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Affiliation(s)
- Caroline Camaré
- INSERM - I2MC, U-1048, 1 avenue Jean Poulhès, BP 84225, 31432 Toulouse cedex 4, France; Université Paul Sabatier Toulouse III, Faculty of Medicine, Biochemistry Departement, Toulouse, France; CHU Toulouse, Rangueil, 1 avenue Jean Poulhès, TSA 50032, 31059 Toulouse Cedex 9, France
| | - Mélanie Pucelle
- INSERM - I2MC, U-1048, 1 avenue Jean Poulhès, BP 84225, 31432 Toulouse cedex 4, France
| | - Anne Nègre-Salvayre
- INSERM - I2MC, U-1048, 1 avenue Jean Poulhès, BP 84225, 31432 Toulouse cedex 4, France.
| | - Robert Salvayre
- INSERM - I2MC, U-1048, 1 avenue Jean Poulhès, BP 84225, 31432 Toulouse cedex 4, France; Université Paul Sabatier Toulouse III, Faculty of Medicine, Biochemistry Departement, Toulouse, France; CHU Toulouse, Rangueil, 1 avenue Jean Poulhès, TSA 50032, 31059 Toulouse Cedex 9, France.
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110
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Choi SH, Park JY. Regulation of the hypoxic tumor environment in hepatocellular carcinoma using RNA interference. Cancer Cell Int 2017; 17:3. [PMID: 28053598 PMCID: PMC5209894 DOI: 10.1186/s12935-016-0374-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Accepted: 12/21/2016] [Indexed: 12/15/2022] Open
Abstract
Objectives Hypoxia is the condition where tumor cells have been deprived of oxygen and has been shown to have a role of tumor development in the hepatocellular carcinoma (HCC). Methods Using PubMed online database and Google scholar web site, the terms “angiogenesis”, “apoptosis”, “RNA interference” and/or “hepatocellular carcinoma (HCC)” were searched and analyzed. Results The hypoxia inducible factors (HIFs) are transcriptional regulators that affect a homeostatic response to oxidative stress and have been identified as a key transcription activator of angiogenesis, survival, and metabolism. Cytokines, such as IL-8, also controlled endothelia cells survival and angiogenesis. IL-8 was also overexpressed under hypoxia and induced tumor angiogenesis and growth. Conclusion Therefore, regulation of HIFs and IL-8 controlled the tumor microenvironment in terms of tumor angiogenesis and apoptosis. The review summarizes the results of regulation of the hypoxic tumor environment.
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Affiliation(s)
- Sung Hoon Choi
- Division of Bioconvergence Analysis, Drug and Disease Target Group, Korea Basic Science Institute, Daejeon, Korea
| | - Jun Yong Park
- Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
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111
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Khan MI, Sobocińska AA, Czarnecka AM, Król M, Botta B, Szczylik C. The Therapeutic Aspects of the Endocannabinoid System (ECS) for Cancer and their Development: From Nature to Laboratory. Curr Pharm Des 2016; 22:1756-66. [PMID: 26654588 PMCID: PMC5412000 DOI: 10.2174/1381612822666151211094901] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 12/10/2015] [Indexed: 12/20/2022]
Abstract
The endocannabinoid system (ECS) is a group of neuromodulatory lipids and their receptors, which are widely distributed in mammalian tissues. ECS regulates various cardiovascular, nervous, and immune system functions inside cells. In recent years, there has been a growing body of evidence for the use of synthetic and natural cannabinoids as potential anticancer agents. For instance, the CB1 and CB2 receptors are assumed to play an important role inside the endocannabinoid system. These receptors are abundantly expressed in the brain and fatty tissue of the human body. Despite recent developments in molecular biology, there is still a lack of knowledge about the distribution of CB1 and CB2 receptors in the human kidney and their role in kidney cancer. To address this gap, we explore and demonstrate the role of the endocannabinoid system in renal cell carcinoma (RCC). In this brief overview, we elucidate the therapeutic aspects of the endocannabinoid system for various cancers and explain how this system can be used for treating kidney cancer. Overall, this review provides new insights into cannabinoids' mechanisms of action in both in vivo and in vitro models, and focuses on recent discoveries in the field.
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Affiliation(s)
- Mohammed I Khan
- Molecular Oncology Laboratory, Department of Oncology, Military Institute of Medicine, ul. Szaserów 128, 04-141 Warsaw, Poland.
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112
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Tak E, Jun DY, Kim SH, Park GC, Lee J, Hwang S, Song GW, Lee SG. Upregulation of P2Y2 nucleotide receptor in human hepatocellular carcinoma cells. J Int Med Res 2016; 44:1234-1247. [PMID: 27807254 PMCID: PMC5536769 DOI: 10.1177/0300060516662135] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Objective To examine if hypoxia inducible factor-1α (HIF-1α) can induce the upregulation of the purinergic receptor P2Y2 (P2Y2) and thereby promote the viability of human hepatocellular carcinoma (HCC) cells under hypoxic conditions. Methods Archival HCC tumour specimens and corresponding non-cancerous tissues were examined immunohistochemically for P2Y2 protein. A series of in vitro experiments were undertaken using HCC cell lines to determine the effect of hypoxia on HIF-1α and P2Y2 levels, the effect of HIF-1α upregulation on P2Y2 levels, and the effect of P2Y2 upregulation on cell viability under hypoxic conditions. Results Human HCC specimens were positive for P2Y2. Hypoxia and upregulated HIF-1α both upregulated the P2Y2 levels in HCC cell lines. P2Y2 upregulation using plasmid transfection resulted in enhanced cell viability under hypoxia. Treatment of HepG2 cells with the selective P2Y2 antagonist MRS2312 downregulated P2Y2 and reduced cell viability in five HCC cell lines. P2Y2 knockdown reduced HepG2 cell viability under hypoxia. Conclusions These present results suggest that HCC cells upregulate P2Y2 levels during hypoxia, which in turn promotes their growth. P2Y2 could be a potential therapeutic target for treating HCC.
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Affiliation(s)
- Eunyoung Tak
- 1 Asan Institute for Life Sciences, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Dae Young Jun
- 1 Asan Institute for Life Sciences, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Seok-Hwan Kim
- 2 Department of Surgery, Division of Liver Transplantation and Hepatobiliary Surgery, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Gil-Chun Park
- 2 Department of Surgery, Division of Liver Transplantation and Hepatobiliary Surgery, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jooyoung Lee
- 1 Asan Institute for Life Sciences, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Shin Hwang
- 2 Department of Surgery, Division of Liver Transplantation and Hepatobiliary Surgery, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Gi-Won Song
- 2 Department of Surgery, Division of Liver Transplantation and Hepatobiliary Surgery, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sung-Gyu Lee
- 2 Department of Surgery, Division of Liver Transplantation and Hepatobiliary Surgery, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
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113
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Lim NSJ, Sham A, Chee SML, Chan C, Raghunath M. Combination of ciclopirox olamine and sphingosine-1-phosphate as granulation enhancer in diabetic wounds. Wound Repair Regen 2016; 24:795-809. [DOI: 10.1111/wrr.12463] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 07/05/2016] [Indexed: 12/25/2022]
Affiliation(s)
- Natalie Sheng Jie Lim
- Institute of Medical Biology, Biomedical Research Council, Agency for Science, Technology and Research, (A*STAR)
- Department of Biomedical Engineering; National University of Singapore
- NUS Tissue Engineering Programme; Life Sciences Institute, National University of Singapore
| | - Adeline Sham
- Institute of Medical Biology, Biomedical Research Council, Agency for Science, Technology and Research, (A*STAR)
- Department of Biomedical Engineering; National University of Singapore
- NUS Tissue Engineering Programme; Life Sciences Institute, National University of Singapore
| | - Stella Min Ling Chee
- Institute of Medical Biology, Biomedical Research Council, Agency for Science, Technology and Research, (A*STAR)
- Department of Biomedical Engineering; National University of Singapore
- NUS Tissue Engineering Programme; Life Sciences Institute, National University of Singapore
| | - Casey Chan
- Department of Biomedical Engineering; National University of Singapore
- Department of Orthopedic Surgery; Yong Loo Ling School of Medicine, National University of Singapore; Singapore
| | - Michael Raghunath
- Institute of Medical Biology, Biomedical Research Council, Agency for Science, Technology and Research, (A*STAR)
- Department of Biomedical Engineering; National University of Singapore
- NUS Tissue Engineering Programme; Life Sciences Institute, National University of Singapore
- Department of Biochemistry; Yong Loo Ling School of Medicine, National University of Singapore
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114
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Nigita G, Acunzo M, Romano G, Veneziano D, Laganà A, Vitiello M, Wernicke D, Ferro A, Croce CM. microRNA editing in seed region aligns with cellular changes in hypoxic conditions. Nucleic Acids Res 2016; 44:6298-308. [PMID: 27298257 PMCID: PMC4994866 DOI: 10.1093/nar/gkw532] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 05/31/2016] [Accepted: 06/01/2016] [Indexed: 12/22/2022] Open
Abstract
RNA editing is a finely tuned, dynamic mechanism for post-transcriptional gene regulation that has been thoroughly investigated in the last decade. Nevertheless, RNA editing in non-coding RNA, such as microRNA (miRNA), have caused great debate and have called for deeper investigation. Until recently, in fact, inadequate methodologies and experimental contexts have been unable to provide detailed insights for further elucidation of RNA editing affecting miRNAs, especially in cancer.In this work, we leverage on recent innovative bioinformatics approaches applied to a more informative experimental context in order to analyze the variations in miRNA seed region editing activity during a time course of a hypoxia-exposed breast cancer cell line. By investigating its behavior in a dynamic context, we found that miRNA editing events in the seed region are not depended on miRNA expression, unprecedentedly providing insights on the targetome shifts derived from these modifications. This reveals that miRNA editing acts under the influence of environmentally induced stimuli.Our results show a miRNA editing activity trend aligning with cellular pathways closely associated to hypoxia, such as the VEGF and PI3K/Akt pathways, providing important novel insights on this poorly elucidated phenomenon.
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Affiliation(s)
- Giovanni Nigita
- Department of Molecular Virology, Immunology and Medical Genetics, Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA
| | - Mario Acunzo
- Department of Molecular Virology, Immunology and Medical Genetics, Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA
| | - Giulia Romano
- Department of Molecular Virology, Immunology and Medical Genetics, Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA
| | - Dario Veneziano
- Department of Molecular Virology, Immunology and Medical Genetics, Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA
| | - Alessandro Laganà
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York City, NY 10029, USA
| | - Marika Vitiello
- Department of Clinicaland Molecular Biomedicine, University of Catania, Catania 95125, Italy
| | - Dorothee Wernicke
- Department of Molecular Virology, Immunology and Medical Genetics, Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA
| | - Alfredo Ferro
- Department of Structural & Functional Biology, University 'Federico II' of Naples, Naples 80126, Italy
| | - Carlo M Croce
- Department of Molecular Virology, Immunology and Medical Genetics, Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA
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115
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Higashimura Y, Kitakaze T, Harada N, Inui H, Nakano Y, Yamaji R. pVHL-mediated degradation of HIF-2α regulates estrogen receptor α expression in normoxic breast cancer cells. FEBS Lett 2016; 590:2690-9. [DOI: 10.1002/1873-3468.12265] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 06/09/2016] [Accepted: 06/13/2016] [Indexed: 12/23/2022]
Affiliation(s)
- Yasuki Higashimura
- Department of Food Science; Ishikawa Prefectural University; Nonoichi Ishikawa Japan
- Molecular Gastroenterology and Hepatology; Graduate School of Medical Science; Kyoto Prefectural University of Medicine; Kyoto Japan
| | - Tomoya Kitakaze
- Division of Applied Biological Chemistry; Graduate School of Life and Environmental Sciences; Osaka Prefecture University; Sakai Osaka Japan
| | - Naoki Harada
- Division of Applied Biological Chemistry; Graduate School of Life and Environmental Sciences; Osaka Prefecture University; Sakai Osaka Japan
| | - Hiroshi Inui
- Division of Clinical Nutrition; Graduate School of Comprehensive Rehabilitation; Osaka Prefecture University; Habikino Osaka Japan
| | - Yoshihisa Nakano
- Center of Research and Development of Bioresources; Osaka Prefecture University; Sakai Osaka Japan
| | - Ryoichi Yamaji
- Division of Applied Biological Chemistry; Graduate School of Life and Environmental Sciences; Osaka Prefecture University; Sakai Osaka Japan
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116
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Gustafsson RKL, Jeffery HC, Yaiw KC, Wilhelmi V, Kostopoulou ON, Davoudi B, Rahbar A, Benard M, Renné T, Söderberg-Nauclér C, Butler LM. Direct infection of primary endothelial cells with human cytomegalovirus prevents angiogenesis and migration. J Gen Virol 2016; 96:3598-3612. [PMID: 26416316 DOI: 10.1099/jgv.0.000301] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Human cytomegalovirus (hCMV) is a beta herpesvirus that establishes lifelong infection. Although the virus does not usually cause overt clinical symptoms in immunocompetent individuals it can have deleterious effects in immunocompromised patients, such as those on post-transplant medication or with HIV infection. hCMV is the most common congenital infection and can lead to serious fetal sequelae. Endothelial cells (ECs) are natural hosts for hCMV in vivo, therefore, investigations of how this cell type is modulated by infection are key to understanding hCMV pathogenesis. Previous studies have examined the effect of secretomes from hCMV-infected cells on EC angiogenesis, whereas the effect of direct infection on this process has not been so well investigated. Here, we show that placental ECs are viral targets during congenital infection and that vessels in infected tissue appear morphologically abnormal. We demonstrate that the clinical hCMV strain VR1814 impaired EC tube assembly in in vitro angiogenesis assays and inhibited wound healing ability in scratch assays. Secretomes from infected cultures did not impair angiogenesis of uninfected ECs, suggesting that cell-intrinsic changes, as opposed to secreted factors, were responsible. We observed viral gene transcription dependent downregulation of the expression of angiogenesis-associated genes, including angiopoietin-2, TEK receptor and vascular endothelial growth factor receptors. An alternative clinical hCMV stain, TB40E showed similar effects on EC angiogenesis. Together, our data indicate that direct infection with hCMV can induce an anti-migratory and anti-angiogenic EC phenotype, which could have a detrimental effect on the vasculature development in infected tissues.
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Affiliation(s)
- Rasmus K L Gustafsson
- Clinical Chemistry, Department of Molecular Medicine and Surgery, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden.,Institute for Clinical Chemistry and Laboratory Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Hannah C Jeffery
- Department of Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden
| | - Koon-Chu Yaiw
- Department of Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden
| | - Vanessa Wilhelmi
- Department of Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden
| | - Ourania N Kostopoulou
- Department of Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden
| | - Belghis Davoudi
- Department of Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden
| | - Afsar Rahbar
- Department of Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden
| | - Melinda Benard
- INSERM UMR 1043, Hospital Purpan, Paul Sabatier University, Toulouse 31024, France
| | - Thomas Renné
- Clinical Chemistry, Department of Molecular Medicine and Surgery, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden.,Institute for Clinical Chemistry and Laboratory Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | | | - Lynn M Butler
- Clinical Chemistry, Department of Molecular Medicine and Surgery, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden.,Institute for Clinical Chemistry and Laboratory Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
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117
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Goey AKL, Chau CH, Sissung TM, Cook KM, Venzon DJ, Castro A, Ransom TR, Henrich CJ, McKee TC, McMahon JB, Grkovic T, Cadelis MM, Copp BR, Gustafson KR, Figg WD. Screening and Biological Effects of Marine Pyrroloiminoquinone Alkaloids: Potential Inhibitors of the HIF-1α/p300 Interaction. JOURNAL OF NATURAL PRODUCTS 2016; 79:1267-75. [PMID: 27140429 PMCID: PMC6323635 DOI: 10.1021/acs.jnatprod.5b00846] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Inhibition of the hypoxia-inducible factor 1α (HIF-1α) pathway by disrupting its association with the transcriptional coactivator p300 inhibits angiogenesis and tumor development. Development of HIF-1α/p300 inhibitors has been hampered by preclinical toxicity; therefore, we aimed to identify novel HIF-1α/p300 inhibitors. Using a cell-free assay designed to test compounds that block HIF-1α/p300 binding, 170 298 crude natural product extracts and prefractionated samples were screened, identifying 25 active extracts. One of these extracts, originating from the marine sponge Latrunculia sp., afforded six pyrroloiminoquinone alkaloids that were identified as positive hits (IC50 values: 1-35 μM). Luciferase assays confirmed inhibition of HIF-1α transcriptional activity by discorhabdin B (1) and its dimer (2), 3-dihydrodiscorhabdin C (3), makaluvamine F (5), discorhabdin H (8), discorhabdin L (9), and discorhabdin W (11) in HCT 116 colon cancer cells (0.1-10 μM, p < 0.05). Except for 11, all of these compounds also reduced HIF-1α transcriptional activity in LNCaP prostate cancer cells (0.1-10 μM, p < 0.05). These effects occurred at noncytotoxic concentrations (<50% cell death) under hypoxic conditions. At the downstream HIF-1α target level, compound 8 (0.5 μM) significantly decreased VEGF secretion in LNCaP cells (p < 0.05). In COLO 205 colon cancer cells no activity was shown in the luciferase or cytotoxicity assays. Pyrroloiminoquinone alkaloids are a novel class of HIF-1α inhibitors, which interrupt the protein-protein interaction between HIF-1α and p300 and consequently reduce HIF-related transcription.
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Affiliation(s)
- Andrew K. L. Goey
- Clinical Pharmacology Program, National Cancer Institute, Bethesda, Maryland 20892, United States
| | - Cindy H. Chau
- Clinical Pharmacology Program, National Cancer Institute, Bethesda, Maryland 20892, United States
| | - Tristan M. Sissung
- Clinical Pharmacology Program, National Cancer Institute, Bethesda, Maryland 20892, United States
| | - Kristina M. Cook
- Clinical Pharmacology Program, National Cancer Institute, Bethesda, Maryland 20892, United States
| | - David J. Venzon
- Biostatistics & Data Management Section, National Cancer Institute, Bethesda, Maryland 20892, United States
| | - Amaya Castro
- Molecular Targets Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
| | - Tanya R. Ransom
- Molecular Targets Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
| | - Curtis J. Henrich
- Molecular Targets Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
- Basic Science Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, Maryland 21702-1201, United States
| | - Tawnya C. McKee
- Molecular Targets Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
| | - James B. McMahon
- Molecular Targets Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
| | - Tanja Grkovic
- School of Chemical Sciences, University of Auckland, Auckland 1142, New Zealand
| | - Melissa M. Cadelis
- School of Chemical Sciences, University of Auckland, Auckland 1142, New Zealand
| | - Brent R. Copp
- School of Chemical Sciences, University of Auckland, Auckland 1142, New Zealand
| | - Kirk R. Gustafson
- Molecular Targets Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
| | - William D. Figg
- Clinical Pharmacology Program, National Cancer Institute, Bethesda, Maryland 20892, United States
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118
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Gu Y, Lu H, Boisson-Vidal C, Li H, Bousquet G, Janin A, Di Benedetto M. [Resistance to anti-angiogenic therapy: a clinical and scientific current issue]. Med Sci (Paris) 2016; 32:370-7. [PMID: 27137694 DOI: 10.1051/medsci/20163204015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Although the use of anti-angiogenic agents has been considered a promising strategy to block tumor growth and improve the bioavailability of drugs into the tumor, the use of most of them in clinical trials is limited. The development of resistance to some anti-angiogenic agents and their high toxicity are currently under investigations. However, the approach is still valid since this therapeutic tool has lengthened survival of patients with colon, breast, kidney, lungs and liver cancers. The identification of biomarkers in response to this family of drugs is an important area of investigation.
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Affiliation(s)
- Yuchen Gu
- Inserm UMR-S1165, université Paris Diderot, Sorbonne Paris Cité, 1, avenue Claude Vellefaux, 75010 Paris, France
| | - He Lu
- Inserm UMR-S1165, université Paris Diderot, Sorbonne Paris Cité, 1, avenue Claude Vellefaux, 75010 Paris, France
| | | | - Hong Li
- Microenvironnement et renouvellement cellulaire intégré (MERCI - EA 3829), faculté de médecine et de pharmacie, université de Rouen, France
| | - Guilhem Bousquet
- Inserm UMR-S1165, université Paris Diderot, Sorbonne Paris Cité, 1, avenue Claude Vellefaux, 75010 Paris, France
| | - Anne Janin
- Inserm UMR-S1165, université Paris Diderot, Sorbonne Paris Cité, 1, avenue Claude Vellefaux, 75010 Paris, France
| | - Mélanie Di Benedetto
- Inserm UMR-S1165, université Paris Diderot, Sorbonne Paris Cité, 1, avenue Claude Vellefaux, 75010 Paris, France - Université Paris 13, avenue Jean-Baptiste Clément, 93430 Villetaneuse, France
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119
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Ghasemi Moravej F, Vahabian M, Soleimani Asl S. Dimethyloxalylglycine may be enhance the capacity of neural-like cells in treatment of Alzheimer disease. Cell Biol Int 2016; 40:619-20. [DOI: 10.1002/cbin.10605] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 03/19/2016] [Indexed: 11/12/2022]
Affiliation(s)
- Fahimeh Ghasemi Moravej
- Department of Anatomy; School of Medicine; Hamadan University of Medical Sciences; Hamadan Iran
| | - Mehrangiz Vahabian
- Department of Persian Literature and English Language; School of Medicine; Hamadan University of Medical Sciences; Hamadan Iran
| | - Sara Soleimani Asl
- Department of Anatomy; School of Medicine; Hamadan University of Medical Sciences; Hamadan Iran
- Cell Therapy Division of Endometrium and Endometriosis Research Center; Hamadan University of Medical Sciences; Hamadan Iran
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120
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Yang Y, Lv SY, Ye W, Zhang L. Apelin/APJ system and cancer. Clin Chim Acta 2016; 457:112-6. [PMID: 27083318 DOI: 10.1016/j.cca.2016.04.001] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2015] [Revised: 04/02/2016] [Accepted: 04/03/2016] [Indexed: 12/29/2022]
Abstract
Apelin is an endogenous ligand of the apelin receptor (APJ), a seven-transmembrane G protein-coupled receptor. Apelin/APJ system has a wide tissue distribution in the brain as well as in peripheral organs including heart, lung, vessels, and adipose tissue. Apelin/APJ was involved in regulating cardiac and vascular function, heart development, and vascular smooth muscle cell proliferation. In this article, we summarize the role of apelin/APJ system on lung cancer, gastroesophageal and colonic cancer, hepatocellular carcinoma, prostate cancer, endometrial cancer, oral squamous cell carcinoma, brain cancer, and tumor neoangiogenesis. Apelin/APJ may be a potential anticancer therapeutic target.
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Affiliation(s)
- Yanjie Yang
- School of Medicine, Henan University, Kaifeng, Henan 475004, China
| | - Shuang-Yu Lv
- School of Medicine, Henan University, Kaifeng, Henan 475004, China.
| | - Wenling Ye
- School of Medicine, Henan University, Kaifeng, Henan 475004, China
| | - Liang Zhang
- Department of Physiology, Medical College of Shihezi University, Shihezi, Xinjiang 832000, China
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121
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Plexin-B1 indirectly affects glioma invasiveness and angiogenesis by regulating the RhoA/αvβ3 signaling pathway and SRPK1. Tumour Biol 2016; 37:11225-36. [PMID: 26944058 DOI: 10.1007/s13277-016-4849-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 01/13/2016] [Indexed: 01/15/2023] Open
Abstract
Gliomas are one of the most common primary brain tumors in adults. They display aggressive invasiveness, are highly vascular, and have a poor prognosis. Plexin-B1 is involved in numerous cellular processes, especially cellular migration and angiogenesis. However, the role and regulatory mechanisms of Plexin-B1 in gliomas are not understood and were thus investigated in this study. By using multiple and diverse experimental techniques, we investigated cell apoptosis, mitochondrial membrane potential, cell migration and invasion, angiogenesis, PI3K and Akt phosphorylation, and also the levels of SRPK1 and αvβ3 in glioma cells and animal glioma tissues. The results indicated that Plexin-B1 expression in glioma cell lines is increased compared to normal human astrocytes. Plexin-B1 mediates RhoA/integrin αvβ3 involved in the PI3K/Akt pathway and SRPK1 to influence the growth of glioma cell, angiogenesis, and motility in vitro and in vivo. Thus, Plexin-B1 signaling regulates the Rho/αvβ3/PI3K/Akt pathway and SRPK1, which are involved in glioma invasiveness and angiogenesis. Therefore, the new drug research should focus on Plexin-B1 as a target for the treatment of glioma invasion and angiogenesis.
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122
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van der Hoeven NW, Hollander MR, Yıldırım C, Jansen MF, Teunissen PF, Horrevoets AJ, van der Pouw Kraan TCTM, van Royen N. The emerging role of galectins in cardiovascular disease. Vascul Pharmacol 2016; 81:31-41. [PMID: 26945624 DOI: 10.1016/j.vph.2016.02.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 12/08/2015] [Accepted: 02/22/2016] [Indexed: 01/06/2023]
Abstract
Galectins are an ancient family of β-galactoside-specific lectins and consist of 15 different types, each with a specific function. They play a role in the immune system, inflammation, wound healing and carcinogenesis. In particular the role of galectin in cancer is widely studied. Lately, the role of galectins in the development of cardiovascular disease has gained attention. Worldwide cardiovascular disease is still the leading cause of death. In ischemic heart disease, atherosclerosis limits adequate blood flow. Angiogenesis and arteriogenesis are highly important mechanisms relieving ischemia by restoring perfusion to the post-stenotic myocardial area. Galectins act ambiguous, both relieving ischemia and accelerating atherosclerosis. Atherosclerosis can ultimately lead to myocardial infarction or ischemic stroke, which are both associated with galectins. There is also a role for galectins in the development of myocarditis by their influence on inflammatory processes. Moreover, galectin acts as a biomarker for the severity of myocardial ischemia and heart failure. This review summarizes the association between galectins and the development of multiple cardiovascular diseases such as myocarditis, ischemic stroke, myocardial infarction, heart failure and atrial fibrillation. Furthermore it focuses on the association between galectin and more general mechanisms such as angiogenesis, arteriogenesis and atherosclerosis.
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Affiliation(s)
| | - Maurits R Hollander
- Department of Cardiology, VU University Medical Center, Amsterdam, The Netherlands
| | - Cansu Yıldırım
- Department of Molecular Cell Biology and Immunology, VU University Medical Center, Amsterdam, The Netherlands
| | - Matthijs F Jansen
- Department of Cardiology, VU University Medical Center, Amsterdam, The Netherlands
| | - Paul F Teunissen
- Department of Cardiology, VU University Medical Center, Amsterdam, The Netherlands
| | - Anton J Horrevoets
- Department of Molecular Cell Biology and Immunology, VU University Medical Center, Amsterdam, The Netherlands
| | | | - Niels van Royen
- Department of Cardiology, VU University Medical Center, Amsterdam, The Netherlands.
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123
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Han Y, Wang X, Wang B, Jiang G. The progress of angiogenic factors in the development of leukemias. Intractable Rare Dis Res 2016; 5:6-16. [PMID: 26989643 PMCID: PMC4761589 DOI: 10.5582/irdr.2015.01048] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Angiogenic factors have been demonstrated to play important roles in modulating angiogenesis of solid tumors. Recently, accumulating studies extensively indicated that some angiogenic factors widely exist in malignant cells of hematologic malignancy, which regulated the expression of a number of genes that were involved in abnormal proliferation, differentiation and apoptosis of these cells. With deep research of angiogenic factors, its expression, function and regulatory mechanism were gradually elucidated, and some of them were related to the development and prognosis of leukemia, or provide more possible strategies for treatment of patients with leukemia. Herein, we summarize the progress in study of some important angiogenic factors and hematological malignancies.
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Affiliation(s)
- Yang Han
- Key Laboratory for Rare & Uncommon Diseases of Shandong Province, Institute of Basic Medicine, Shandong Academy of Medical Sciences, Ji'nan, Shandong, China
- School of Medicine and Life Sciences, Ji'nan University, Ji'nan, Shandong, China
| | - Xidi Wang
- Laboratory Department, People's Hospital of Zhangqiu City, Zhangqiu, Shandong, China
| | - Bingping Wang
- Department of Hematology, Shengli Oilfield Central Hospital, Dongying, China
| | - Guosheng Jiang
- Key Laboratory for Rare & Uncommon Diseases of Shandong Province, Institute of Basic Medicine, Shandong Academy of Medical Sciences, Ji'nan, Shandong, China
- Address correspondence to: Dr. Guosheng Jiang, Key Laboratory for Rare & Uncommon Diseases of Shandong Province, Institute of Basic Medicine, Shandong Academy of Medical Sciences, NO.18877 of Jingshi Road, Ji'nan, Shandong, China. E-mail:
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Chen S, Sang N. Hypoxia-Inducible Factor-1: A Critical Player in the Survival Strategy of Stressed Cells. J Cell Biochem 2016; 117:267-78. [PMID: 26206147 PMCID: PMC4715696 DOI: 10.1002/jcb.25283] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 07/20/2015] [Indexed: 12/31/2022]
Abstract
HIF-1 activation has been well known as an adaptive strategy to hypoxia. Recently it became clear that hypoxia was often accompanied by insufficient supply of glucose or amino acids as a common result of poor circulation that frequently occurs in solid tumors and ischemic lesions, creating a mixed nutrient insufficiency. In response to nutrient insufficiency, stressed cells elicit survival strategies including activation of AMPK and HIF-1 to cope with the stress. Particularly, in solid tumors, HIF-1 promotes cell survival and migration, stimulates angiogenesis, and induces resistance to radiation and chemotherapy. Interestingly, radiation and some chemotherapeutics are reported to trigger the activation of AMPK. Here we discuss the recent advances that may potentially link the stress responsive mechanisms including AMPK activation, ATF4 activation and the enhancement of Hsp70/Hsp90 function to HIF-1 activation. Potential implication and application of the stress-facilitated HIF-1 activation in solid tumors and ischemic disorders will be discussed. A better understanding of HIF-1 activation in cells exposed to stresses is expected to facilitate the design of therapeutic approaches that specifically modulate cell survival strategy.
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Affiliation(s)
- Shuyang Chen
- Department of Biology and Graduate Program of Biological Sciences, College of Arts and Sciences, Drexel University, Philadelphia, Pennsylvania
| | - Nianli Sang
- Department of Biology and Graduate Program of Biological Sciences, College of Arts and Sciences, Drexel University, Philadelphia, Pennsylvania
- Department of Pathology and Laboratory Medicine, Drexel University College of Medicine, Philadelphia, Pennsylvania
- Sydney Kimmel Cancer Center, Philadelphia, Pennsylvania
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Dong D, Reece EA, Lin X, Wu Y, AriasVillela N, Yang P. New development of the yolk sac theory in diabetic embryopathy: molecular mechanism and link to structural birth defects. Am J Obstet Gynecol 2016; 214:192-202. [PMID: 26432466 PMCID: PMC4744545 DOI: 10.1016/j.ajog.2015.09.082] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 09/18/2015] [Accepted: 09/22/2015] [Indexed: 12/12/2022]
Abstract
Maternal diabetes mellitus is a significant risk factor for structural birth defects, including congenital heart defects and neural tube defects. With the rising prevalence of type 2 diabetes mellitus and obesity in women of childbearing age, diabetes mellitus-induced birth defects have become an increasingly significant public health problem. Maternal diabetes mellitus in vivo and high glucose in vitro induce yolk sac injuries by damaging the morphologic condition of cells and altering the dynamics of organelles. The yolk sac vascular system is the first system to develop during embryogenesis; therefore, it is the most sensitive to hyperglycemia. The consequences of yolk sac injuries include impairment of nutrient transportation because of vasculopathy. Although the functional relationship between yolk sac vasculopathy and structural birth defects has not yet been established, a recent study reveals that the quality of yolk sac vasculature is related inversely to embryonic malformation rates. Studies in animal models have uncovered key molecular intermediates of diabetic yolk sac vasculopathy, which include hypoxia-inducible factor-1α, apoptosis signal-regulating kinase 1, and its inhibitor thioredoxin-1, c-Jun-N-terminal kinases, nitric oxide, and nitric oxide synthase. Yolk sac vasculopathy is also associated with abnormalities in arachidonic acid and myo-inositol. Dietary supplementation with fatty acids that restore lipid levels in the yolk sac lead to a reduction in diabetes mellitus-induced malformations. Although the role of the human yolk in embryogenesis is less extensive than in rodents, nevertheless, human embryonic vasculogenesis is affected negatively by maternal diabetes mellitus. Mechanistic studies have identified potential therapeutic targets for future intervention against yolk sac vasculopathy, birth defects, and other complications associated with diabetic pregnancies.
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Affiliation(s)
- Daoyin Dong
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD
| | - E Albert Reece
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD; Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD
| | - Xue Lin
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD
| | - Yanqing Wu
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD
| | - Natalia AriasVillela
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD
| | - Peixin Yang
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD; Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD.
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126
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Bartaula-Brevik S, Pedersen TO, Finne-Wistrand A, Bolstad AI, Mustafa K. Angiogenic and Immunomodulatory Properties of Endothelial and Mesenchymal Stem Cells. Tissue Eng Part A 2016; 22:244-52. [PMID: 26650611 PMCID: PMC4779276 DOI: 10.1089/ten.tea.2015.0316] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 11/17/2015] [Indexed: 12/12/2022] Open
Abstract
It has been suggested that the effect of implanted cells on the local environment is important when selecting the appropriate cell type for tissue regeneration. Our aim was to compare the local tissue response to implanted human mesenchymal stem cells (MSC) and human umbilical vein endothelial cells (EC). MSC and EC were cultured in poly(L-lactide-co-1,5-dioxepan-2-one) scaffolds for 1 week in a bioreactor system, after which they were implanted subcutaneously in NOD/SCID mice. After 3 weeks, scaffolds were retrieved, and the mRNA expression of selected genes involved in hypoxia and inflammation was examined by real-time reverse transcription polymerase chain reaction and correlated with immunofluorescent staining for corresponding proteins. The Toll-like receptor signaling pathway was examined by superarray hybridization. The expression of 53 angiogenesis-related proteins was investigated by a proteome profiler angiogenesis antibody array kit. Vascularization was quantified using immunohistochemistry for CD31. The expression of hypoxia-inducible factors and biomarkers for angiogenesis was more strongly upregulated in response to implanted EC than to MSC, suggesting a higher sensitivity to low oxygen tension among EC. Hypoxic signaling was increased after implantation of EC compared with MSC, leading to a prolonged acute inflammatory phase that promoted ingrowth of vascular cells and establishment of the circulation. Inflammatory cytokines were also differently expressed at the gene and protein levels in the two experimental groups, resulting in altered recruitment of acute and chronic inflammatory cells. The end result of these differences was increased vessel formation within the constructs in the EC group.
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Affiliation(s)
| | | | - Anna Finne-Wistrand
- Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Stockholm, Sweden
| | | | - Kamal Mustafa
- Department of Clinical Dentistry, University of Bergen, Bergen, Norway
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Gorin C, Rochefort GY, Bascetin R, Ying H, Lesieur J, Sadoine J, Beckouche N, Berndt S, Novais A, Lesage M, Hosten B, Vercellino L, Merlet P, Le-Denmat D, Marchiol C, Letourneur D, Nicoletti A, Vital SO, Poliard A, Salmon B, Muller L, Chaussain C, Germain S. Priming Dental Pulp Stem Cells With Fibroblast Growth Factor-2 Increases Angiogenesis of Implanted Tissue-Engineered Constructs Through Hepatocyte Growth Factor and Vascular Endothelial Growth Factor Secretion. Stem Cells Transl Med 2016; 5:392-404. [PMID: 26798059 DOI: 10.5966/sctm.2015-0166] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 10/07/2015] [Indexed: 12/18/2022] Open
Abstract
Tissue engineering strategies based on implanting cellularized biomaterials are promising therapeutic approaches for the reconstruction of large tissue defects. A major hurdle for the reliable establishment of such therapeutic approaches is the lack of rapid blood perfusion of the tissue construct to provide oxygen and nutrients. Numerous sources of mesenchymal stem cells (MSCs) displaying angiogenic potential have been characterized in the past years, including the adult dental pulp. Establishment of efficient strategies for improving angiogenesis in tissue constructs is nevertheless still an important challenge. Hypoxia was proposed as a priming treatment owing to its capacity to enhance the angiogenic potential of stem cells through vascular endothelial growth factor (VEGF) release. The present study aimed to characterize additional key factors regulating the angiogenic capacity of such MSCs, namely, dental pulp stem cells derived from deciduous teeth (SHED). We identified fibroblast growth factor-2 (FGF-2) as a potent inducer of the release of VEGF and hepatocyte growth factor (HGF) by SHED. We found that FGF-2 limited hypoxia-induced downregulation of HGF release. Using three-dimensional culture models of angiogenesis, we demonstrated that VEGF and HGF were both responsible for the high angiogenic potential of SHED through direct targeting of endothelial cells. In addition, FGF-2 treatment increased the fraction of Stro-1+/CD146+ progenitor cells. We then applied in vitro FGF-2 priming to SHED before encapsulation in hydrogels and in vivo subcutaneous implantation. Our results showed that FGF-2 priming is more efficient than hypoxia at increasing SHED-induced vascularization compared with nonprimed controls. Altogether, these data demonstrate that FGF-2 priming enhances the angiogenic potential of SHED through the secretion of both HGF and VEGF.
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Affiliation(s)
- Caroline Gorin
- EA 2496 Pathologies, Imagerie et Biothérapies orofaciales et Plateforme Imagerie du Vivant, Dental School, Université Paris Descartes Sorbonne Paris Cité, Montrouge, France Assistance Publique des Hôpitaux de Paris (AP-HP) Département d'Odontologie, Hôpitaux Universitaires PNVS, Paris, France
| | - Gael Y Rochefort
- EA 2496 Pathologies, Imagerie et Biothérapies orofaciales et Plateforme Imagerie du Vivant, Dental School, Université Paris Descartes Sorbonne Paris Cité, Montrouge, France
| | - Rumeyza Bascetin
- Center for Interdisciplinary Research in Biology, Collège de France, Paris, France Inserm U1050, Paris, France CNRS UMRS 7241, Paris, France
| | - Hanru Ying
- Center for Interdisciplinary Research in Biology, Collège de France, Paris, France Inserm U1050, Paris, France CNRS UMRS 7241, Paris, France
| | - Julie Lesieur
- EA 2496 Pathologies, Imagerie et Biothérapies orofaciales et Plateforme Imagerie du Vivant, Dental School, Université Paris Descartes Sorbonne Paris Cité, Montrouge, France
| | - Jérémy Sadoine
- EA 2496 Pathologies, Imagerie et Biothérapies orofaciales et Plateforme Imagerie du Vivant, Dental School, Université Paris Descartes Sorbonne Paris Cité, Montrouge, France
| | - Nathan Beckouche
- Center for Interdisciplinary Research in Biology, Collège de France, Paris, France Inserm U1050, Paris, France CNRS UMRS 7241, Paris, France
| | - Sarah Berndt
- Center for Interdisciplinary Research in Biology, Collège de France, Paris, France Inserm U1050, Paris, France CNRS UMRS 7241, Paris, France
| | - Anita Novais
- EA 2496 Pathologies, Imagerie et Biothérapies orofaciales et Plateforme Imagerie du Vivant, Dental School, Université Paris Descartes Sorbonne Paris Cité, Montrouge, France
| | - Matthieu Lesage
- Center for Interdisciplinary Research in Biology, Collège de France, Paris, France Inserm U1050, Paris, France CNRS UMRS 7241, Paris, France
| | - Benoit Hosten
- INSERM UMR-S1144, Université Paris Descartes-Paris Diderot Sorbonne Paris Cité, AP-HP, Hôpital St. Louis, Unité Claude Kellershohn, Paris, France
| | - Laetitia Vercellino
- Université Paris Diderot, AP-HP, Hôpital St. Louis, Unité Claude Kellershohn, Paris, France
| | - Pascal Merlet
- Université Paris Diderot, AP-HP, Hôpital St. Louis, Unité Claude Kellershohn, Paris, France
| | - Dominique Le-Denmat
- EA 2496 Pathologies, Imagerie et Biothérapies orofaciales et Plateforme Imagerie du Vivant, Dental School, Université Paris Descartes Sorbonne Paris Cité, Montrouge, France
| | - Carmen Marchiol
- Institut Cochin, Plateforme Imagerie du vivant, Université Paris Descartes Sorbonne Paris Cité, Paris, France
| | - Didier Letourneur
- INSERM U1148, Laboratory of Vascular Translational Science, Université Paris Diderot Sorbonne Paris Cité, Sorbonne Paris Cité, Faculté de Médecine, Site Xavier Bichat, and Département Hospitalo-Universitaire Fibrosis, Inflammation, and Remodeling, Paris, France
| | - Antonino Nicoletti
- INSERM U1148, Laboratory of Vascular Translational Science, Université Paris Diderot Sorbonne Paris Cité, Sorbonne Paris Cité, Faculté de Médecine, Site Xavier Bichat, and Département Hospitalo-Universitaire Fibrosis, Inflammation, and Remodeling, Paris, France
| | - Sibylle Opsahl Vital
- EA 2496 Pathologies, Imagerie et Biothérapies orofaciales et Plateforme Imagerie du Vivant, Dental School, Université Paris Descartes Sorbonne Paris Cité, Montrouge, France Assistance Publique des Hôpitaux de Paris (AP-HP) Département d'Odontologie, Hôpitaux Universitaires PNVS, Paris, France
| | - Anne Poliard
- EA 2496 Pathologies, Imagerie et Biothérapies orofaciales et Plateforme Imagerie du Vivant, Dental School, Université Paris Descartes Sorbonne Paris Cité, Montrouge, France
| | - Benjamin Salmon
- EA 2496 Pathologies, Imagerie et Biothérapies orofaciales et Plateforme Imagerie du Vivant, Dental School, Université Paris Descartes Sorbonne Paris Cité, Montrouge, France Assistance Publique des Hôpitaux de Paris (AP-HP) Département d'Odontologie, Hôpitaux Universitaires PNVS, Paris, France
| | - Laurent Muller
- Center for Interdisciplinary Research in Biology, Collège de France, Paris, France Inserm U1050, Paris, France CNRS UMRS 7241, Paris, France
| | - Catherine Chaussain
- EA 2496 Pathologies, Imagerie et Biothérapies orofaciales et Plateforme Imagerie du Vivant, Dental School, Université Paris Descartes Sorbonne Paris Cité, Montrouge, France Assistance Publique des Hôpitaux de Paris (AP-HP) Département d'Odontologie, Hôpitaux Universitaires PNVS, Paris, France
| | - Stéphane Germain
- Center for Interdisciplinary Research in Biology, Collège de France, Paris, France Inserm U1050, Paris, France CNRS UMRS 7241, Paris, France
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128
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Asić K. Dominant mechanisms of primary resistance differ from dominant mechanisms of secondary resistance to targeted therapies. Crit Rev Oncol Hematol 2016; 97:178-96. [DOI: 10.1016/j.critrevonc.2015.08.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 06/18/2015] [Accepted: 08/04/2015] [Indexed: 02/07/2023] Open
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Liu J, Fan L, Wang H, Sun G. Autophagy, a double-edged sword in anti-angiogenesis therapy. Med Oncol 2015; 33:10. [PMID: 26715036 DOI: 10.1007/s12032-015-0721-9] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 12/12/2015] [Indexed: 12/24/2022]
Abstract
Autophagy is a highly conservative cell behavior to keep the intracellular homeostasis and is frequently activated when cells encounter disgusting conditions, such as nutrition or growth factor deprive, hypoxia and cytotoxic agents. However, the precise role of autophagy under various conditions may be opposite, differ from protect cells survival to promote cells death, and the mechanism of this conditional-dependent role is still unclear. Anti-angiogenesis agents, such as bevacizumab, sorafenib and sunitinib, could reduce tumor microvascular density and increase tumor hypoxia, thus up-regulating autophagy activation of tumor cells, but the function of autophagy induced by anti-angiogenesis agents is still divergent and is considered to play a cytoprotective role in most cases. In this review, we mainly discuss the relationship between anti-angiogenesis therapy-induced hypoxia and autophagy, and pay special attention on the exact role of anti-angiogenesis agents induced autophagy in the process of anti-angiogenesis treatment.
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Affiliation(s)
- Jiatao Liu
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, 218 Jixi Road, Hefei, 230022, Anhui Province, China.,Department of Pharmacy, The First Affiliated Hospital of Anhui Medical University, 218 Jixi Road, Hefei, 230022, Anhui Province, China
| | - Lulu Fan
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, 218 Jixi Road, Hefei, 230022, Anhui Province, China
| | - Hua Wang
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, 218 Jixi Road, Hefei, 230022, Anhui Province, China
| | - Guoping Sun
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, 218 Jixi Road, Hefei, 230022, Anhui Province, China.
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130
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Hutton DL, Grayson WL. Hypoxia Inhibits De Novo Vascular Assembly of Adipose-Derived Stromal/Stem Cell Populations, but Promotes Growth of Preformed Vessels. Tissue Eng Part A 2015; 22:161-9. [PMID: 26481655 DOI: 10.1089/ten.tea.2015.0421] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Vascularization is critical for cell survival within tissue-engineered grafts. Adipose-derived stromal/stem cells (ASCs) are widely used in tissue engineering applications as they are a clinically relevant source of stem cells and endothelial progenitor cells. ASCs have previously been shown to self-assemble into pericyte-stabilized vascular networks in normoxic (20% O2) cultures. This capacity for de novo vascular assembly may accelerate graft vascularization in vivo rather than relying solely on angiogenic ingrowth. However, oxygen depletion within large cell-seeded grafts will be rapid, and it is unclear how this worsening hypoxic environment will impact the vascular assembly of the transplanted cells. The objectives of this study were to determine whether ASC-derived vessels could grow in hypoxia and to assess whether the vessel maturity (i.e., individual cells vs. preformed vessels) influenced this hypoxic response. Utilizing an in vitro vascularization model, ASCs were encapsulated within fibrin gels and cultured in vitro for up to 6 days in either normoxia (20% O2) or hypoxia (0.2% or 2% O2). In a subsequent experiment, vessels were allowed to preform in normoxia for 6 days before an additional 6 days of either normoxia or hypoxia. Viability, vessel growth, pericyte coverage, proliferation, metabolism, and angiogenic factor expression were assessed for each experimental approach. Vessel growth was dramatically inhibited in both moderate and severe hypoxia (47% and 11% total vessel length vs. normoxia, respectively), despite maintaining high cell viability and upregulating endogenous expression of vascular endothelial growth factor in hypoxia. Bromodeoxyuridine labeling indicated significantly reduced proliferation of endothelial cells in hypoxia. In contrast, when vascular networks were allowed to preform for 6 days in normoxia, vessels not only survived but also continued to grow more in hypoxia than those maintained in normoxia. These findings demonstrate that vascular assembly and growth are tightly regulated by oxygen tension and may be differentially affected by hypoxic conditions based on the maturity of the vessels. Understanding this relationship is critical to developing effective approaches to engineer viable tissue-engineered grafts in vivo.
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Affiliation(s)
- Daphne L Hutton
- 1 Department of Biomedical Engineering, Johns Hopkins University School of Medicine , Baltimore, Maryland.,2 Translational Tissue Engineering Center, Johns Hopkins University School of Medicine , Baltimore, Maryland
| | - Warren L Grayson
- 1 Department of Biomedical Engineering, Johns Hopkins University School of Medicine , Baltimore, Maryland.,2 Translational Tissue Engineering Center, Johns Hopkins University School of Medicine , Baltimore, Maryland.,3 Department of Material Sciences and Engineering, Johns Hopkins University School of Engineering , Baltimore, Maryland
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131
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Feitelson MA, Arzumanyan A, Kulathinal RJ, Blain SW, Holcombe RF, Mahajna J, Marino M, Martinez-Chantar ML, Nawroth R, Sanchez-Garcia I, Sharma D, Saxena NK, Singh N, Vlachostergios PJ, Guo S, Honoki K, Fujii H, Georgakilas AG, Bilsland A, Amedei A, Niccolai E, Amin A, Ashraf SS, Boosani CS, Guha G, Ciriolo MR, Aquilano K, Chen S, Mohammed SI, Azmi AS, Bhakta D, Halicka D, Keith WN, Nowsheen S. Sustained proliferation in cancer: Mechanisms and novel therapeutic targets. Semin Cancer Biol 2015; 35 Suppl:S25-S54. [PMID: 25892662 PMCID: PMC4898971 DOI: 10.1016/j.semcancer.2015.02.006] [Citation(s) in RCA: 406] [Impact Index Per Article: 45.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 02/20/2015] [Accepted: 02/23/2015] [Indexed: 02/08/2023]
Abstract
Proliferation is an important part of cancer development and progression. This is manifest by altered expression and/or activity of cell cycle related proteins. Constitutive activation of many signal transduction pathways also stimulates cell growth. Early steps in tumor development are associated with a fibrogenic response and the development of a hypoxic environment which favors the survival and proliferation of cancer stem cells. Part of the survival strategy of cancer stem cells may manifested by alterations in cell metabolism. Once tumors appear, growth and metastasis may be supported by overproduction of appropriate hormones (in hormonally dependent cancers), by promoting angiogenesis, by undergoing epithelial to mesenchymal transition, by triggering autophagy, and by taking cues from surrounding stromal cells. A number of natural compounds (e.g., curcumin, resveratrol, indole-3-carbinol, brassinin, sulforaphane, epigallocatechin-3-gallate, genistein, ellagitannins, lycopene and quercetin) have been found to inhibit one or more pathways that contribute to proliferation (e.g., hypoxia inducible factor 1, nuclear factor kappa B, phosphoinositide 3 kinase/Akt, insulin-like growth factor receptor 1, Wnt, cell cycle associated proteins, as well as androgen and estrogen receptor signaling). These data, in combination with bioinformatics analyses, will be very important for identifying signaling pathways and molecular targets that may provide early diagnostic markers and/or critical targets for the development of new drugs or drug combinations that block tumor formation and progression.
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Affiliation(s)
- Mark A Feitelson
- Department of Biology, Temple University, Philadelphia, PA, United States.
| | - Alla Arzumanyan
- Department of Biology, Temple University, Philadelphia, PA, United States
| | - Rob J Kulathinal
- Department of Biology, Temple University, Philadelphia, PA, United States
| | - Stacy W Blain
- Department of Pediatrics, State University of New York, Downstate Medical Center, Brooklyn, NY, United States
| | - Randall F Holcombe
- Tisch Cancer Institute, Mount Sinai School of Medicine, New York, NY, United States
| | - Jamal Mahajna
- MIGAL-Galilee Technology Center, Cancer Drug Discovery Program, Kiryat Shmona, Israel
| | - Maria Marino
- Department of Science, University Roma Tre, V.le G. Marconi, 446, 00146 Rome, Italy
| | - Maria L Martinez-Chantar
- Metabolomic Unit, CIC bioGUNE, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas, Technology Park of Bizkaia, Bizkaia, Spain
| | - Roman Nawroth
- Department of Urology, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Isidro Sanchez-Garcia
- Experimental Therapeutics and Translational Oncology Program, Instituto de Biología Molecular y Celular del Cáncer, CSIC/Universidad de Salamanca, Salamanca, Spain
| | - Dipali Sharma
- Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Neeraj K Saxena
- Department of Oncology, Johns Hopkins University School of Medicine and the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD, United States
| | - Neetu Singh
- Tissue and Cell Culture Unit, CSIR-Central Drug Research Institute, Council of Scientific & Industrial Research, Lucknow, India
| | | | - Shanchun Guo
- Department of Microbiology, Biochemistry & Immunology, Morehouse School of Medicine, Atlanta, GA, United States
| | - Kanya Honoki
- Department of Orthopedic Surgery, Nara Medical University, Kashihara 634-8521, Japan
| | - Hiromasa Fujii
- Department of Orthopedic Surgery, Nara Medical University, Kashihara 634-8521, Japan
| | - Alexandros G Georgakilas
- Physics Department, School of Applied Mathematical and Physical Sciences, National Technical University of Athens, Zografou 15780, Athens, Greece
| | - Alan Bilsland
- Institute of Cancer Sciences, University of Glasgow, UK
| | - Amedeo Amedei
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy
| | - Elena Niccolai
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy
| | - Amr Amin
- Department of Biology, College of Science, UAE University, Al-Ain, United Arab Emirates
| | - S Salman Ashraf
- Department of Chemistry, College of Science, UAE University, Al-Ain, United Arab Emirates
| | - Chandra S Boosani
- Department of BioMedical Sciences, Creighton University, Omaha, NE, United States
| | - Gunjan Guha
- School of Chemical and Bio Technology, SASTRA University, Thanjavur, India
| | - Maria Rosa Ciriolo
- Department of Biology, University of Rome "Tor Vergata", 00133 Rome, Italy
| | - Katia Aquilano
- Department of Biology, University of Rome "Tor Vergata", 00133 Rome, Italy
| | - Sophie Chen
- Department of Research and Development, Ovarian and Prostate Cancer Research Trust Laboratory, Guildford, Surrey GU2 7YG, United Kingdom
| | - Sulma I Mohammed
- Department of Comparative Pathobiology, Purdue University Center for Cancer Research, West Lafayette, IN, United States
| | - Asfar S Azmi
- Department of Pathology, Karmonas Cancer Institute, Wayne State University School of Medicine, Detroit, MI, United States
| | - Dipita Bhakta
- School of Chemical and Bio Technology, SASTRA University, Thanjavur, India
| | - Dorota Halicka
- Brander Cancer Research Institute, Department of Pathology, New York Medical College, Valhalla, NY, United States
| | - W Nicol Keith
- Institute of Cancer Sciences, University of Glasgow, UK
| | - Somaira Nowsheen
- Mayo Graduate School, Mayo Medical School, Mayo Clinic Medical Scientist Training Program, Rochester, MN, United States
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132
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Cui M, Kanemoto S, Cui X, Kaneko M, Asada R, Matsuhisa K, Tanimoto K, Yoshimoto Y, Shukunami C, Imaizumi K. OASIS modulates hypoxia pathway activity to regulate bone angiogenesis. Sci Rep 2015; 5:16455. [PMID: 26558437 PMCID: PMC4642342 DOI: 10.1038/srep16455] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 10/14/2015] [Indexed: 12/31/2022] Open
Abstract
OASIS/CREB3L1, an endoplasmic reticulum (ER)-resident transcription factor, plays important roles in osteoblast differentiation. In this study, we identified new crosstalk between OASIS and the hypoxia signaling pathway, which regulates vascularization during bone development. RT-PCR and real-time PCR analyses revealed significant decreases in the expression levels of hypoxia-inducible factor-1α (HIF-1α) target genes such as vascular endothelial growth factor A (VEGFA) in OASIS-deficient (Oasis−/−) mouse embryonic fibroblasts. In coimmunoprecipitation experiments, the N-terminal fragment of OASIS (OASIS-N; activated form of OASIS) bound to HIF-1α through the bZIP domain. Luciferase assays showed that OASIS-N promoted the transcription activities of a reporter gene via a hypoxia-response element (HRE). Furthermore, the expression levels of an angiogenic factor Vegfa was decreased in Oasis−/− osteoblasts. Immunostaining and metatarsal angiogenesis assay showed retarded vascularization in bone tissue of Oasis−/− mice. These results suggest that OASIS affects the expression of HIF-1α target genes through the protein interaction with HIF-1α, and that OASIS-HIF-1α complexes may play essential roles in angiogenesis during bone development.
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Affiliation(s)
- Min Cui
- Department of Biochemistry, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Soshi Kanemoto
- Department of Biochemistry, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Xiang Cui
- Department of Biochemistry, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Masayuki Kaneko
- Department of Biochemistry, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Rie Asada
- Department of Biochemistry, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Koji Matsuhisa
- Department of Biochemistry, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Keiji Tanimoto
- Department of Radiation Medicine, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima 734-8553, Japan
| | - Yuki Yoshimoto
- Department of Molecular Biology and Biochemistry, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Chisa Shukunami
- Department of Molecular Biology and Biochemistry, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Kazunori Imaizumi
- Department of Biochemistry, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
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133
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Aktipis A. Principles of cooperation across systems: from human sharing to multicellularity and cancer. Evol Appl 2015; 9:17-36. [PMID: 27087837 PMCID: PMC4780378 DOI: 10.1111/eva.12303] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2015] [Accepted: 08/04/2015] [Indexed: 12/31/2022] Open
Abstract
From cells to societies, several general principles arise again and again that facilitate cooperation and suppress conflict. In this study, I describe three general principles of cooperation and how they operate across systems including human sharing, cooperation in animal and insect societies and the massively large‐scale cooperation that occurs in our multicellular bodies. The first principle is that of Walk Away: that cooperation is enhanced when individuals can leave uncooperative partners. The second principle is that resource sharing is often based on the need of the recipient (i.e., need‐based transfers) rather than on strict account‐keeping. And the last principle is that effective scaling up of cooperation requires increasingly sophisticated and costly cheater suppression mechanisms. By comparing how these principles operate across systems, we can better understand the constraints on cooperation. This can facilitate the discovery of novel ways to enhance cooperation and suppress cheating in its many forms, from social exploitation to cancer.
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Affiliation(s)
- Athena Aktipis
- Department of Psychology Center for Social Dynamics and Complexity Center for Evolution and Medicine Biodesign Institute Arizona State University Tempe AZ USA; Center for Evolution and Cancer University of California San Francisco San Francisco CA USA
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134
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Lenalidomide, an anti-tumor drug, regulates retinal endothelial cell function: Implication for treating ocular neovascular disorder. Biochem Biophys Res Commun 2015; 465:678-84. [DOI: 10.1016/j.bbrc.2015.08.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 08/03/2015] [Indexed: 11/19/2022]
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135
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HIF2A Variants Were Associated with Different Levels of High-Altitude Hypoxia among Native Tibetans. PLoS One 2015; 10:e0137956. [PMID: 26368009 PMCID: PMC4569405 DOI: 10.1371/journal.pone.0137956] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 07/26/2015] [Indexed: 11/19/2022] Open
Abstract
Hypoxia inducible factors, including HIF1A and HIF2A, play central roles in response to high-altitude hypoxia and genetic variants of HIF1A or HIF2A were associated with high-altitude sickness or adaptation. However, it remains to determine whether they are associated with tolerance to different levels of high-altitude selection pressure among native Tibetans. We recruited 189 Tibetan subjects living at 2,700 meters (Low level of high altitude, LHA), 197 at 3,200 meters (Middle level of high altitude of high altitude, MHA), 249 at 3,700 meters (High level of high altitude, HHA) and 269 at 4,700 meters (Very high level of high altitude, VHA) and performed association analysis of twelve tSNPs (tagging SNPs) in HIF1A and HIF2A with high-altitude. We found (1) a increasing trend of HIF2A rs5621780-C(18.4%, 15.9%, 32.8% and 31.1%, respectively, in LHA, MHA, HHA and VHA)(P = 3.56E-9); (2) increasing trends of HIF2A rs6756667-A(68.7%, 73.4%, 79.9% and 89.6%), rs7589621- G(74.6%, 77.9%, 83.7%, and 92.1%) and rs1868092-A(64.1%, 67.3%, 75.1% and 84.4%) (P = 3.56E-9, 4.68E-16, 1.17E-13 and 7.09E-14, respectively); (3) a increasing trend of haplotype AG (68.7%, 73.1%, 79.9% and 89.6%) (P = 2.22E-7) which was constructed by rs6756667 and rs7589621; (4) a strong linear correlation between major alleles of rs6756667-A (R2 = 0.997, P = 0.002), rs7589621-G (R2 = 0.994, P = 0.003), rs1868092-A (R2 = 0.985, P = 0.008) and altitude by linear correlation test. The associations between HIF2A variants and different level of high altitude support that extremely high-altitude hypoxia challenge imposes selective effects on HIF2A variants among native Tibetans.
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136
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Keulers TG, Schaaf MB, Peeters HJ, Savelkouls KG, Vooijs MA, Bussink J, Jutten B, Rouschop KM. GABARAPL1 is required for increased EGFR membrane expression during hypoxia. Radiother Oncol 2015; 116:417-22. [DOI: 10.1016/j.radonc.2015.06.023] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Revised: 06/16/2015] [Accepted: 06/17/2015] [Indexed: 10/23/2022]
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137
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GUO LI, ZHANG JIHANG, JIN JUN, GAO XUBIN, YU JIE, GENG QIANWEN, LI HUIJIE, HUANG LAN. Genetic variants of endothelial PAS domain protein 1 are associated with susceptibility to acute mountain sickness in individuals unaccustomed to high altitude: A nested case-control study. Exp Ther Med 2015; 10:907-914. [PMID: 26622413 PMCID: PMC4533176 DOI: 10.3892/etm.2015.2611] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Accepted: 06/15/2015] [Indexed: 01/25/2023] Open
Abstract
The endothelial PAS domain protein 1 (EPAS1) gene functions to sense the blood oxygen level by regulating the hypoxia-inducible transcription factor pathway, and single nucleotide polymorphisms (SNPs) of EPAS1 have been found to have a strong and positive selection in the adaptation of the native Tibetan highland population to high-altitude hypoxia. The aim of the present study was to investigate the effect of EPAS1 SNPs on the risk of acute mountain sickness (AMS) and the physiological responses to acute high-altitude hypoxia in lowland humans. Three tag SNPs (rs6756667, rs13419896 and rs4953354; minor allele frequency, ≥5%) were selected and genotyped in 603 unrelated Han Chinese men, who had traveled to Lhasa (a high-altitude hypoxia environment) by plane, using a matrix-assisted laser desorption/ionization time-of-flight mass spectrometry method. The data showed that the EPAS1 rs6756667 wild-type GG homozygous genotype was associated with elevated AMS risk compared with the AA and AG genotypes (odds ratio, 1.815; 95% confidence interval, 1.233-2.666; P=0.0023) using the dominant-model analysis. EPAS1 rs6756667 GG genotypes were also associated with higher levels of hemoglobin, red blood cells and hematocrit than those carrying the AG heterozygote during AMS development. These findings indicate that EPAS1 SNPs play a role in the physiological effects of AMS, and these effects could be further evaluated as a therapeutic strategy to control acute hypoxia-related human diseases.
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Affiliation(s)
- LI GUO
- Institute of Cardiovascular Diseases of PLA, Department of Cardiology, Xinqiao Hospital, The Third Military Medical University, Chongqing 400037, P.R. China
| | - JIHANG ZHANG
- Institute of Cardiovascular Diseases of PLA, Department of Cardiology, Xinqiao Hospital, The Third Military Medical University, Chongqing 400037, P.R. China
| | - JUN JIN
- Institute of Cardiovascular Diseases of PLA, Department of Cardiology, Xinqiao Hospital, The Third Military Medical University, Chongqing 400037, P.R. China
| | - XUBIN GAO
- Institute of Cardiovascular Diseases of PLA, Department of Cardiology, Xinqiao Hospital, The Third Military Medical University, Chongqing 400037, P.R. China
| | - JIE YU
- Institute of Cardiovascular Diseases of PLA, Department of Cardiology, Xinqiao Hospital, The Third Military Medical University, Chongqing 400037, P.R. China
| | - QIANWEN GENG
- Institute of Cardiovascular Diseases of PLA, Department of Cardiology, Xinqiao Hospital, The Third Military Medical University, Chongqing 400037, P.R. China
| | - HUIJIE LI
- Institute of Cardiovascular Diseases of PLA, Department of Cardiology, Xinqiao Hospital, The Third Military Medical University, Chongqing 400037, P.R. China
| | - LAN HUANG
- Institute of Cardiovascular Diseases of PLA, Department of Cardiology, Xinqiao Hospital, The Third Military Medical University, Chongqing 400037, P.R. China
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138
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Deferoxamine Preconditioning of Neural-Like Cells Derived from Human Wharton’s Jelly Mesenchymal Stem Cells as a Strategy to Promote Their Tolerance and Therapeutic Potential: An In Vitro Study. Cell Mol Neurobiol 2015; 36:689-700. [DOI: 10.1007/s10571-015-0249-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Accepted: 07/26/2015] [Indexed: 01/22/2023]
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139
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Cypher AD, Ickes JR, Bagatto B. Bisphenol A alters the cardiovascular response to hypoxia in Danio rerio embryos. Comp Biochem Physiol C Toxicol Pharmacol 2015; 174-175:39-45. [PMID: 26117065 DOI: 10.1016/j.cbpc.2015.06.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 06/15/2015] [Accepted: 06/17/2015] [Indexed: 10/23/2022]
Abstract
The purpose of this study was to determine if the cardiovascular response to hypoxia was altered by the presence of bisphenol A (BPA) in Danio rerio embryos. It was expected that BPA exposure would affect cardiovascular parameters during hypoxia more than normoxia due to an interaction between BPA and the hypoxia-inducible factor (HIF-1α) pathway. We demonstrate that BPA exposure has a minimal effect during normoxia but can severely affect the cardiovascular system during a hypoxic event. Cardiovascular response was measured in vivo using video microscopy and digital motion analysis. RBC density increased 35% in hypoxia alone but decreased 48% with addition of 0.25mg/L BPA. Tissue vascularization (% coverage) was unaffected by hypoxia alone but decreased 37% with addition of 0.25mg/L BPA. The diameter and RBC velocity of arteries were more sensitive than veins to BPA exposure during both normoxia and hypoxia. Arterial RBC velocity decreased 42% during normoxia and 52% during hypoxia with 1mg/L BPA. This decrease in velocity may in part be due to the 86% decrease in heart rate (ƒH) observed during co-exposure to hypoxia and 5mg/L BPA. While stroke volume (SV) was unaffected by treatment, cardiac output (Q) decreased by 69% with co-exposure. ƒH and Q were not affected by BPA exposure during normoxia. Development ultimately slowed by 146% and mortality rates were 95% during hypoxia when exposed to 5mg/L BPA. Our results show for the first time that BPA exposure alters the cardiovascular system during hypoxia more so than normoxia.
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Affiliation(s)
- Alysha D Cypher
- Department of Biology, Program in Integrated Bioscience, The University of Akron, Akron, OH, USA.
| | - Jessica R Ickes
- Department of Biology, Program in Integrated Bioscience, The University of Akron, Akron, OH, USA
| | - Brian Bagatto
- Department of Biology, Program in Integrated Bioscience, The University of Akron, Akron, OH, USA
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140
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Pelay-Gimeno M, Glas A, Koch O, Grossmann TN. Structure-Based Design of Inhibitors of Protein-Protein Interactions: Mimicking Peptide Binding Epitopes. Angew Chem Int Ed Engl 2015; 54:8896-927. [PMID: 26119925 PMCID: PMC4557054 DOI: 10.1002/anie.201412070] [Citation(s) in RCA: 496] [Impact Index Per Article: 55.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Indexed: 12/15/2022]
Abstract
Protein-protein interactions (PPIs) are involved at all levels of cellular organization, thus making the development of PPI inhibitors extremely valuable. The identification of selective inhibitors is challenging because of the shallow and extended nature of PPI interfaces. Inhibitors can be obtained by mimicking peptide binding epitopes in their bioactive conformation. For this purpose, several strategies have been evolved to enable a projection of side chain functionalities in analogy to peptide secondary structures, thereby yielding molecules that are generally referred to as peptidomimetics. Herein, we introduce a new classification of peptidomimetics (classes A-D) that enables a clear assignment of available approaches. Based on this classification, the Review summarizes strategies that have been applied for the structure-based design of PPI inhibitors through stabilizing or mimicking turns, β-sheets, and helices.
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Affiliation(s)
- Marta Pelay-Gimeno
- Chemical Genomics Centre of the Max Planck SocietyOtto-Hahn-Strasse 15, 44227 Dortmund (Germany) E-mail:
| | - Adrian Glas
- Chemical Genomics Centre of the Max Planck SocietyOtto-Hahn-Strasse 15, 44227 Dortmund (Germany) E-mail:
| | - Oliver Koch
- TU Dortmund University, Department of Chemistry and Chemical BiologyOtto-Hahn-Strasse 6, 44227 Dortmund (Germany)
| | - Tom N Grossmann
- Chemical Genomics Centre of the Max Planck SocietyOtto-Hahn-Strasse 15, 44227 Dortmund (Germany) E-mail:
- TU Dortmund University, Department of Chemistry and Chemical BiologyOtto-Hahn-Strasse 6, 44227 Dortmund (Germany)
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141
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Baronzio G, Parmar G, Baronzio M. Overview of Methods for Overcoming Hindrance to Drug Delivery to Tumors, with Special Attention to Tumor Interstitial Fluid. Front Oncol 2015; 5:165. [PMID: 26258072 PMCID: PMC4512202 DOI: 10.3389/fonc.2015.00165] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Accepted: 07/06/2015] [Indexed: 12/24/2022] Open
Abstract
Every drug used to treat cancer (chemotherapeutics, immunological, monoclonal antibodies, nanoparticles, radionuclides) must reach the targeted cells through the tumor environment at adequate concentrations, in order to exert their cell-killing effects. For any of these agents to reach the goal cells, they must overcome a number of impediments created by the tumor microenvironment (TME), beginning with tumor interstitial fluid pressure (TIFP), and a multifactorial increase in composition of the extracellular matrix (ECM). A primary modifier of TME is hypoxia, which increases the production of growth factors, such as vascular endothelial growth factor and platelet-derived growth factor. These growth factors released by both tumor cells and bone marrow recruited myeloid cells form abnormal vasculature characterized by vessels that are tortuous and more permeable. Increased leakiness combined with increased inflammatory byproducts accumulates fluid within the tumor mass (tumor interstitial fluid), ultimately creating an increased pressure (TIFP). Fibroblasts are also up-regulated by the TME, and deposit fibers that further augment the density of the ECM, thus, further worsening the TIFP. Increased TIFP with the ECM are the major obstacles to adequate drug delivery. By decreasing TIFP and ECM density, we can expect an associated rise in drug concentration within the tumor itself. In this overview, we will describe all the methods (drugs, nutraceuticals, and physical methods of treatment) able to lower TIFP and to modify ECM used for increasing drug concentration within the tumor tissue.
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Affiliation(s)
| | - Gurdev Parmar
- Integrated Health Clinic , Fort Langley, BC , Canada
| | - Miriam Baronzio
- Integrative Oncology Section, Medical Center Kines , Milan , Italy
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142
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Van Hove AH, Benoit DSW. Depot-Based Delivery Systems for Pro-Angiogenic Peptides: A Review. Front Bioeng Biotechnol 2015; 3:102. [PMID: 26236708 PMCID: PMC4504170 DOI: 10.3389/fbioe.2015.00102] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2015] [Accepted: 06/29/2015] [Indexed: 01/13/2023] Open
Abstract
Insufficient vascularization currently limits the size and complexity for all tissue engineering approaches. Additionally, increasing or re-initiating blood flow is the first step toward restoration of ischemic tissue homeostasis. However, no FDA-approved pro-angiogenic treatments exist, despite the many pre-clinical approaches that have been developed. The relatively small size of peptides gives advantages over protein-based treatments, specifically with respect to synthesis and stability. While many pro-angiogenic peptides have been identified and shown promising results in vitro and in vivo, the majority of biomaterials developed for pro-angiogenic drug delivery focus on protein delivery. This narrow focus limits pro-angiogenic therapeutics as peptides, similar to proteins, suffer from poor pharmacokinetics in vivo, necessitating the development of controlled release systems. This review discusses pro-angiogenic peptides and the biomaterials delivery systems that have been developed, or that could easily be adapted for peptide delivery, with a particular focus on depot-based delivery systems.
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Affiliation(s)
- Amy H. Van Hove
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, USA
| | - Danielle S. W. Benoit
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, USA
- Department of Chemical Engineering, University of Rochester, Rochester, NY, USA
- Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY, USA
- Department of Orthopaedics, Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA
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143
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Fahs S, Patil-Sen Y, Snape TJ. Foldamers as Anticancer Therapeutics: Targeting Protein-Protein Interactions and the Cell Membrane. Chembiochem 2015; 16:1840-1853. [DOI: 10.1002/cbic.201500188] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Indexed: 01/10/2023]
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144
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Taniguchi K, Sugito N, Kumazaki M, Shinohara H, Yamada N, Nakagawa Y, Ito Y, Otsuki Y, Uno B, Uchiyama K, Akao Y. MicroRNA-124 inhibits cancer cell growth through PTB1/PKM1/PKM2 feedback cascade in colorectal cancer. Cancer Lett 2015; 363:17-27. [PMID: 25818238 DOI: 10.1016/j.canlet.2015.03.026] [Citation(s) in RCA: 128] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2014] [Revised: 03/17/2015] [Accepted: 03/17/2015] [Indexed: 12/31/2022]
Abstract
Altered levels and functions of microRNAs (miRs) have been associated with carcinogenesis. In this study, we investigated the role of miR-124 in colorectal adenoma (CRA) and cancer (CRC). The expression levels of miR-124 were decreased in CRA (81.8%) and CRC (57.6%) in 55 clinical samples. The ectopic expression of miR-124 induced apoptosis and autophagy in colon cancer cells. Also, miR-124 targeted polypyrimidine tract-binding protein 1 (PTB1), which is a splicer of pyruvate kinase muscles 1 and 2 (PKM1 and PKM2) and induced the switching of PKM isoform expression from PKM2 to PKM1. Also, siR-PTB1 induced drastic apoptosis in colon cancer cells. Furthermore, we found that the ectopic expression of miR-124 enhanced oxidative stress and the miR-124/PTB1/PKM1/PKM2 axis constituted a feedback cascade. Finally, we showed that intratumor injection of miR-124 and siR-PTB1 induced a tumor-suppressive effect in xenografted mice. The axis was established by both in vitro and in vivo experiments to function in human colorectal cancer cells. These findings suggest that miR-124 acts as a tumor-suppressor and a modulator of energy metabolism through a PTB1/PKM1/PKM2 feedback cascade in human colorectal tumor cells.
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Affiliation(s)
- Kohei Taniguchi
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan; Department of General and Gastroenterological Surgery, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki, Osaka 569-8686, Japan
| | - Nobuhiko Sugito
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Minami Kumazaki
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Haruka Shinohara
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Nami Yamada
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Yoshihito Nakagawa
- Department of Gastroenterology, Fujita Health University, School of Medicine, 1-98 Dengakugakubo Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
| | - Yuko Ito
- Department of Anatomy and Cell Biology, Division of Life Sciences, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki, Osaka 569-8686, Japan
| | - Yoshinori Otsuki
- Department of Anatomy and Cell Biology, Division of Life Sciences, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki, Osaka 569-8686, Japan
| | - Bunji Uno
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Kazuhisa Uchiyama
- Department of General and Gastroenterological Surgery, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki, Osaka 569-8686, Japan
| | - Yukihiro Akao
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.
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145
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Shin JI, Lim HY, Kim HW, Seung BJ, Sur JH. Analysis of Hypoxia-Inducible Factor-1α Expression Relative to Other Key Factors in Malignant Canine Mammary Tumours. J Comp Pathol 2015; 153:101-10. [PMID: 26145724 DOI: 10.1016/j.jcpa.2015.05.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 05/21/2015] [Accepted: 05/27/2015] [Indexed: 12/13/2022]
Abstract
Hypoxia-inducible factor (HIF)-1α plays important physiological roles, but is also of significance in carcinogenesis in man and animals. This study aimed to identify HIF-1α expression in malignant canine mammary tumours (CMTs) and to find correlations with other key factors by using immunohistochemistry (IHC). The histological classification, grading and evaluation of lymphatic invasion were achieved by examining sections stained by haematoxylin and eosin. Determination of molecular subtype, expression of HIF-1α, oestrogen receptor (OR), progesterone receptor (PR), human epidermal growth factor receptor (HER)-2, Ki67, vascular endothelial growth factor (VEGF) and E-cadherin was evaluated by IHC in 87 samples of malignant CMTs. HIF-1α expression correlated significantly with histological type, grade of cancer, negativity for OR and expression of Ki67 and VEGF. Lymphatic invasion, molecular subtype, PR, HER-2 and E-cadherin levels did not significantly correlate with HIF-1α expression. The results of this study imply that HIF-1α may potentially play a role in increased malignancy of CMTs, as it does in human breast cancer.
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Affiliation(s)
- J-I Shin
- Department of Veterinary Pathology, Small Animal Tumour Diagnostic Center, College of Veterinary Medicine, Konkuk University, 120 Neuengdong-ro, Gwangjin-gu, Seoul, Republic of Korea
| | - H-Y Lim
- Department of Veterinary Pathology, Small Animal Tumour Diagnostic Center, College of Veterinary Medicine, Konkuk University, 120 Neuengdong-ro, Gwangjin-gu, Seoul, Republic of Korea
| | - H-W Kim
- Department of Veterinary Pathology, Small Animal Tumour Diagnostic Center, College of Veterinary Medicine, Konkuk University, 120 Neuengdong-ro, Gwangjin-gu, Seoul, Republic of Korea
| | - B-J Seung
- Department of Veterinary Pathology, Small Animal Tumour Diagnostic Center, College of Veterinary Medicine, Konkuk University, 120 Neuengdong-ro, Gwangjin-gu, Seoul, Republic of Korea
| | - J-H Sur
- Department of Veterinary Pathology, Small Animal Tumour Diagnostic Center, College of Veterinary Medicine, Konkuk University, 120 Neuengdong-ro, Gwangjin-gu, Seoul, Republic of Korea.
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146
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Saijo H, Tatsumi N, Arihiro S, Kato T, Okabe M, Tajiri H, Hashimoto H. Microangiopathy triggers, and inducible nitric oxide synthase exacerbates dextran sulfate sodium-induced colitis. J Transl Med 2015; 95:728-48. [PMID: 25938626 DOI: 10.1038/labinvest.2015.60] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 03/07/2015] [Accepted: 03/31/2015] [Indexed: 02/08/2023] Open
Abstract
Ulcerative colitis (UC) is a representative clinical manifestation of inflammatory bowel disease that causes chronic gastrointestinal tract inflammation. Dextran sulfate sodium (DSS)-induced colitis mice have been used to investigate UC pathogenesis, and in this UC model, disturbance and impairment of the mucosal epithelium have been reported to cause colitis. However, how DSS sporadically breaks down the epithelium remains unclear. In this study, we focused on the colonic microcirculation and myenteric neurons of DSS-induced colitis. Moreover, we examined the potential of myenteric neurons as a target to prevent exacerbation of colitis. Fluorescent angiographic and histopathological studies revealed that DSS administration elicited blood vessel disruption before epithelial disorders appeared. Ischemic conditions in the lamina propria induced inducible nitric oxide synthase (iNOS) expression in myenteric neurons as colitis aggravated. When neuronal activity was inhibited with butylscopolamine, neuronal iNOS expression decreased, and the exacerbation of colitis was prevented. These results suggested that DSS-induced colitis was triggered by microcirculatory disturbance in the mucosa, and that excessive neuronal excitation aggravated colitis. During remission periods of human UC, endoscopic inspection of the colonic microcirculation may enable the early detection of disease recurrence, and inhibition of neuronal iNOS expression may prevent the disease from worsening.
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Affiliation(s)
- Hiroki Saijo
- 1] Department of Anatomy, The Jikei University School of Medicine, Tokyo, Japan [2] Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Norifumi Tatsumi
- Department of Anatomy, The Jikei University School of Medicine, Tokyo, Japan
| | - Seiji Arihiro
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Tomohiro Kato
- Department of Endoscopy, The Jikei University School of Medicine, Tokyo, Japan
| | - Masataka Okabe
- Department of Anatomy, The Jikei University School of Medicine, Tokyo, Japan
| | - Hisao Tajiri
- 1] Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan [2] Department of Endoscopy, The Jikei University School of Medicine, Tokyo, Japan
| | - Hisashi Hashimoto
- Department of Anatomy, The Jikei University School of Medicine, Tokyo, Japan
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147
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Pelay-Gimeno M, Glas A, Koch O, Grossmann TN. Strukturbasierte Entwicklung von Protein-Protein-Interaktionsinhibitoren: Stabilisierung und Nachahmung von Peptidliganden. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201412070] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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148
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Sari Y, Sanada H, Minematsu T, Nakagami G, Nagase T, Huang L, Noguchi H, Mori T, Yoshimura K, Sugama J. Vibration inhibits deterioration in rat deep-tissue injury through HIF1-MMP axis. Wound Repair Regen 2015; 23:386-93. [PMID: 25801385 DOI: 10.1111/wrr.12286] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 03/16/2015] [Indexed: 11/29/2022]
Abstract
Deep-tissue injury (DTI) is a unique type of pressure ulcer (PU) in which deep-tissue damage expands outwards to the superficial skin. DTI progresses rapidly into a severe PU, despite initially appearing as only a bruise or darkened tissue in the superficial skin. Although some DTI detection methods are available, there is currently no strategy for treating deteriorating DTI. This study investigated the efficacy of vibration therapy for preventing DTI deterioration through down-regulation of the hypoxia-inducible factor-1 matrix metalloproteinase (MMP) axis in rats. We prepared a conventional PU rat model (PU group) and a DTI deterioration rat model (DTI group). The DTI group was further divided into two groups subjected to vibration and control treatments, respectively. Macroscopic and histological features, hypoxia, oxidative stress, apoptosis, and MMP2 and MMP9 activities in compressed skin were analyzed. Hypoxia, oxidative stress, and MMP activity were enhanced in the DTI group compared with the PU group. Vibration remarkably inhibited DTI deterioration, hypoxia, and the expression/activities of MMP2 and MMP9. These results suggest that vibration therapy can effectively attenuate deterioration of DTI. This report provides the first evidence for a therapeutic treatment for deteriorating DTI.
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Affiliation(s)
- Yunita Sari
- Department of Gerontological Nursing/Wound Care Management, The University of Tokyo, Tokyo, Japan.,Department of Nursing, Jenderal Soedirman University, Purwokerto, Indonesia
| | - Hiromi Sanada
- Department of Gerontological Nursing/Wound Care Management, The University of Tokyo, Tokyo, Japan
| | - Takeo Minematsu
- Department of Gerontological Nursing/Wound Care Management, The University of Tokyo, Tokyo, Japan
| | - Gojiro Nakagami
- Department of Gerontological Nursing/Wound Care Management, The University of Tokyo, Tokyo, Japan
| | - Takashi Nagase
- Department of Gerontological Nursing/Wound Care Management, The University of Tokyo, Tokyo, Japan
| | - Lijuan Huang
- Department of Gerontological Nursing/Wound Care Management, The University of Tokyo, Tokyo, Japan
| | - Hiroshi Noguchi
- Department of Life Support Technology (Molten), The University of Tokyo, Tokyo, Japan
| | - Taketoshi Mori
- Department of Life Support Technology (Molten), The University of Tokyo, Tokyo, Japan
| | - Kotaro Yoshimura
- Department of Plastic Surgery, The University of Tokyo, Tokyo, Japan
| | - Junko Sugama
- Wellness Promotion Science Center, Kanazawa University, Ishikawa, Japan
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149
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Hypoxia-Inducible Factor-1 in Physiological and Pathophysiological Angiogenesis: Applications and Therapies. BIOMED RESEARCH INTERNATIONAL 2015; 2015:549412. [PMID: 26146622 PMCID: PMC4471260 DOI: 10.1155/2015/549412] [Citation(s) in RCA: 350] [Impact Index Per Article: 38.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 04/10/2015] [Accepted: 04/17/2015] [Indexed: 02/07/2023]
Abstract
The cardiovascular system ensures the delivery of oxygen and nutrients to all cells, tissues, and organs. Under extended exposure to reduced oxygen levels, cells are able to survive through the transcriptional activation of a series of genes that participate in angiogenesis, glucose metabolism, and cell proliferation. The oxygen-sensitive transcriptional activator HIF-1 (hypoxia-inducible factor-1) is a key transcriptional mediator of the response to hypoxic conditions. The HIF-1 pathway was found to be a master regulator of angiogenesis. Whether the process is physiological or pathological, HIF-1 seems to participate in vasculature formation by synergistic correlations with other proangiogenic factors such as VEGF (vascular endothelial growth factor), PlGF (placental growth factor), or angiopoietins. Considering the important contributions of HIF-1 in angiogenesis and vasculogenesis, it should be considered a promising target for treating ischaemic diseases or cancer. In this review, we discuss the roles of HIF-1 in both physiological/pathophysiological angiogenesis and potential strategies for clinical therapy.
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150
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Kim A, Im M, Yim NH, Hwang YH, Yang HJ, Ma JY. The novel herbal cocktail MA128 suppresses tumor growth and the metastatic potential of highly malignant tumor cells. Oncol Rep 2015; 34:900-12. [PMID: 26035620 DOI: 10.3892/or.2015.4018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 04/29/2015] [Indexed: 11/06/2022] Open
Abstract
MA128, a novel herbal medicine, was previously identified and its effectiveness in the treatment of asthma and atopic dermatitis (AD) was demonstrated. In particular, post-inflammatory hyperpigmentation (PIH) in AD mice was improved by treatment with MA128. In addition, MA128 exhibited anti-melanogenic activity by inhibiting tyrosinase activity via the p38 MAPK and protein kinase A signaling pathways in B16F10 cells. In the present study, we examined whether oral administration of MA128 suppressed the in vivo tumor growth of HT1080 cells in athymic nude mice. The results showed that the daily oral administration of 75 and 150 mg/kg MA128 suppressed the tumorigenic growth of HT1080 cells efficiently. Since metastasis is a major cause of cancer-associated mortality and the greatest challenge during cancer treatment, we investigated the effect of non-toxic concentrations of MA128 on the metastatic potential of HT1080 cells. MA128 inhibited anchorage-independent colony formation, migration and invasion. Matrix metalloproteinase-9 (MMP-9) activity under resting and PMA-stimulated conditions was decreased in a dose-dependent manner by MA128 in HT1080 cells. In addition, the daily oral administration of MA128 at doses of 75 and 150 mg/kg efficiently blocked the lung metastasis of B16F10 cells that had been injected into the tail veins of C57BL/6 mice. In particular, none of the mice treated with MA128 exhibited systemic toxicity, such as body weight loss or liver and kidney dysfunction. MA128 also inhibited tumor‑induced angiogenesis. Taken together, the results suggest that MA128 is a potential therapeutic agent and a safe herbal medicine for controlling malignant and metastatic cancer.
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Affiliation(s)
- Aeyung Kim
- Korean Medicine (KM)-Based Herbal Drug Development Group, Korea Institute of Oriental Medicine (KIOM), Daejeon 305-811, Republic of Korea
| | - Minju Im
- Korean Medicine (KM)-Based Herbal Drug Development Group, Korea Institute of Oriental Medicine (KIOM), Daejeon 305-811, Republic of Korea
| | - Nam-Hiu Yim
- Korean Medicine (KM)-Based Herbal Drug Development Group, Korea Institute of Oriental Medicine (KIOM), Daejeon 305-811, Republic of Korea
| | - Youn-Hwan Hwang
- Korean Medicine (KM)-Based Herbal Drug Development Group, Korea Institute of Oriental Medicine (KIOM), Daejeon 305-811, Republic of Korea
| | - Hye Jin Yang
- Korean Medicine (KM)-Based Herbal Drug Development Group, Korea Institute of Oriental Medicine (KIOM), Daejeon 305-811, Republic of Korea
| | - Jin Yeul Ma
- Korean Medicine (KM)-Based Herbal Drug Development Group, Korea Institute of Oriental Medicine (KIOM), Daejeon 305-811, Republic of Korea
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