scholarly journals Role of NADPH Oxidase-4 in Human Endothelial Progenitor Cells

2017 ◽  
Vol 8 ◽  
Author(s):  
Nora Y. Hakami ◽  
Amaresh K. Ranjan ◽  
Anandwardhan A. Hardikar ◽  
Greg J. Dusting ◽  
Hitesh M. Peshavariya
Keyword(s):  
Nadph Oxidase ◽  
Progenitor Cells ◽  
Endothelial Progenitor Cells ◽  
Endothelial Progenitor ◽  
Nadph Oxidase 4

Abstract 458: Critical Role of Bone Marrow Nox2-based NADPH Oxidase in Neovascularization in Response to Hindlimb Ischemia: Impact on Endothelial Progenitor Cells Function

Circulation ◽  
2007 ◽  
Vol 116 (suppl_16) ◽  
Author(s):  
Norifumi Urao ◽  
Hyoe Inomata ◽  
Ha Won Kim ◽  
Ronald Mckinney ◽  
Mazooma Razvi ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Nadph Oxidase ◽  
Progenitor Cells ◽  
Endothelial Progenitor Cells ◽  
Critical Role ◽  
Border Zone ◽  
Hindlimb Ischemia ◽  
Endothelial Progenitor ◽  
Deficient Mice

Bone marrow (BM) is the major reservoir for endothelial progenitor cells (EPCs). Postnatal neovascularization involves not only angiogenesis but also mobilization of EPCs from BM and their recruitment to the ischemic sites. We demonstrated that reactive oxygen species (ROS) derived from Nox2-based NADPH oxidase play an important role in reparative angiogenesis induced by hindlimb ischemia. However, role of Nox2-derived ROS in BM and EPC function in postnatal neovascularization is unknown. Here we show that Nox2 is the most highly expressed Nox enzymes in mouse BM cells (BMCs) and EPCs. Hindlimb ischemia of mice significantly increases Nox2 mRNA expression (2.3-fold) and ROS production (7.2-fold) in BMCs at 3 days after surgery, which is associated with an increase in number of EPC-like c-kit+Flk-1+ cells in peripheral blood (3.9-fold). Nox2-deficient mice show impairment of ischemia-induced flow recovery (68% inhibition) and significant reduction of ROS levels in BM (98% decrease) and EPC mobilization, as assessed by EPC culture assay (76% decrease) and FACS analysis of c-kit+Flk-1+ cells (33% decrease). Transplantation of wild-type (WT)-BM into Nox2-deficient mice rescues the defective neovascularization. Conversely, WT mice transplanted with Nox2-deficient BM show significant decrease of flow recovery (41% decrease) and capillary density (24% decrease) compared to WT-BM transplanted control. Intravenous infusion of WT-BM-mononuclear cells (MNCs), but not Nox2-deficient MNCs, into WT mice at 1 day after hindlimb ischemia significantly promotes neovascularization (37% increase). Infusion of fluorescent dye-labeled WT- and Nox2-deficient BMCs reveals that homing capacity of Nox2-deficient BMCs in ischemic border zone is significantly reduced (52% decrease). In vitro, VEGF-induced EPC migration (48% decrease) and BMCs invasion (68% decrease) are significantly inhibited in Nox2-deficient cells. In conclusion, Nox2-derived ROS in BM play a critical role in mobilization, homing and angiogenic capacity of EPCs, thereby promoting revascularization of ischemic tissue. Thus, NADPH oxidase in BM and EPCs is potential therapeutic targets for ischemic cardiovascular diseases.

scholarly journals Phorbol ester-induced angiogenesis of endothelial progenitor cells: The role of NADPH oxidase-mediated, redox-related matrix metalloproteinase pathways

PLoS ONE ◽  
2019 ◽  
Vol 14 (1) ◽  
pp. e0209426 ◽  
Author(s):  
Tao-Cheng Wu ◽  
Chia-Chi Chang ◽  
Hsin-Bang Leu ◽  
Po-Hsun Huang ◽  
Shing-Jong Lin ◽  
...  
Keyword(s):  
Matrix Metalloproteinase ◽  
Nadph Oxidase ◽  
Progenitor Cells ◽  
Endothelial Progenitor Cells ◽  
Phorbol Ester ◽  
Endothelial Progenitor

scholarly journals SAT0014 ENDOTHELIAL PROGENITOR CELLS: ROLE IN ENDOTHELIAL DAMAGE OF INTERSTITIAL LUNG DISEASE ASSOCIATED TO RHEUMATOID ARTHRITIS

2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 937.1-937
Author(s):  
V. Pulito-Cueto ◽  
S. Remuzgo-Martínez ◽  
F. Genre ◽  
V. M. Mora-Cuesta ◽  
D. Iturbe Fernández ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Interstitial Lung Disease ◽  
Lung Disease ◽  
Progenitor Cells ◽  
Endothelial Progenitor Cells ◽  
Potential Role ◽  
Endothelial Damage ◽  
Research Support ◽  
Endothelial Progenitor

Background:Interstitial lung disease (ILD) is one of the most significant comorbidities of rheumatoid arthritis (RA), increasing the mortality in these patients [1,2]. Although the pathogenesis of ILD associated to RA (RA-ILD+) remains poorly defined [1], it is known that vascular tissue plays a crucial role in lung physiology [3]. In this context, a population of cells termed endothelial progenitor cells (EPC) are involved in vasculogenesis and endothelial tissue repair [4]. Previous reports suggest the implication of EPC in different conditions such as RA and idiopathic pulmonary fibrosis (IPF), the most common and destructive ILD [5,6]. Nevertheless, little is known about their specific role in RA-ILD+.Objectives:The purpose of this study was to shed light on the potential role of EPC in endothelial damage in RA-ILD+.Methods:Peripheral venous blood was collected from a total of 68 individuals (18 with RA-ILD+, 17 with RA-ILD-, 19 with IPF and 14 healthy controls). All subjects were recruited from the Rheumatology and Pneumology departments of Hospital Universitario Marqués de Valdecilla, Santander, Spain. Quantification of EPC was analyzed by the expression of surface antigens by flow cytometry. The combination of antibodies against the stem cell marker CD34, the immature progenitor marker CD133, the endothelial marker VEGF receptor 2 (CD309) and the common leukocyte antigen CD45 was used. EPC were considered as CD34+, CD45Low, CD309+and CD133+. All statistical analyses were performed using Prism software 5 (GraphPad).Results:EPC frequency was significantly increased in patients with RA-ILD+, RA-ILD-and IPF compared to controls (p=0.001, p=0.002, p< 0.0001, respectively). Nevertheless, patients with RA, both RA-ILD+and RA-ILD-, showed a lower frequency of EPC than those with IPF (p= 0.048, p= 0.006, respectively).Conclusion:Our results provide evidence for a potential role of EPC as a reparative compensatory mechanism related to endothelial damage in RA-ILD+, RA-ILD-and IPF patients. Interestingly, EPC frequency may help to establish a differential diagnostic between patients with IPF and those who have an underlying autoimmune disease (RA-ILD+).References:[1] J Clin Med 2019; 8: 2038;[2] Arthritis Rheumatol 2015; 67: 28-38;[3] Nat Protoc 2015; 10: 1697-1708;[4] Science 1997; 275: 964-966;[5] Rheumatology (Oxford) 2012; 51: 1775-1784;[6] Angiogenesis 2013; 16: 147-157.Acknowledgments:Personal funds, VP-C: PREVAL18/01 (IDIVAL); SR-M: RD16/0012/0009 (ISCIII-ERDF); LL-G: PI18/00042 (ISCIII-ERDF); RL-M: Miguel Servet type I CP16/00033 (ISCIII-ESF).Disclosure of Interests:Verónica Pulito-Cueto: None declared, Sara Remuzgo-Martínez: None declared, Fernanda Genre: None declared, Victor Manuel Mora-Cuesta: None declared, David Iturbe Fernández: None declared, Sonia Fernández-Rozas: None declared, Leticia Lera-Gómez: None declared, Pilar Alonso Lecue: None declared, Javier Rodriguez Carrio: None declared, Belén Atienza-Mateo: None declared, Virginia Portilla: None declared, David Merino: None declared, Ricardo Blanco Grant/research support from: AbbVie, MSD, Roche, Consultant of: Abbvie, Eli Lilly, Pfizer, Roche, Bristol-Myers, Janssen, UCB Pharma and MSD, Speakers bureau: Abbvie, Eli Lilly, Pfizer, Roche, Bristol-Myers, Janssen, UCB Pharma. MSD, Alfonso Corrales Speakers bureau: Abbvie, Jose Manuel Cifrián-Martínez: None declared, Raquel López-Mejías: None declared, Miguel A González-Gay Grant/research support from: Pfizer, Abbvie, MSD, Speakers bureau: Pfizer, Abbvie, MSD

scholarly journals Effective Actions of Ion Release from Mesoporous Bioactive Glass and Macrophage Mediators on the Differentiation of Osteoprogenitor and Endothelial Progenitor Cells

Pharmaceutics ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1152
Author(s):  
Alberto Polo-Montalvo ◽  
Laura Casarrubios ◽  
María Concepción Serrano ◽  
Adrián Sanvicente ◽  
María José Feito ◽  
...  
Keyword(s):  
Bone Regeneration ◽  
Progenitor Cells ◽  
Endothelial Progenitor Cells ◽  
Mesoporous Structure ◽  
Ion Release ◽  
Endothelial Progenitor ◽  
Matrix Mineralization ◽  
Intracellular Content

Due to their specific mesoporous structure and large surface area, mesoporous bioactive glasses (MBGs) possess both drug-delivery ability and effective ionic release to promote bone regeneration by stimulating osteogenesis and angiogenesis. Macrophages secrete mediators that can affect both processes, depending on their phenotype. In this work, the action of ion release from MBG-75S, with a molar composition of 75SiO2-20CaO-5P2O5, on osteogenesis and angiogenesis and the modulatory role of macrophages have been assessed in vitro with MC3T3-E1 pre-osteoblasts and endothelial progenitor cells (EPCs) in monoculture and in coculture with RAW 264.7 macrophages. Ca2+, phosphorous, and silicon ions released from MBG-75S were measured in the culture medium during both differentiation processes. Alkaline phosphatase activity and matrix mineralization were quantified as the key markers of osteogenic differentiation in MC3T3-E1 cells. The expression of CD31, CD34, VEGFR2, eNOS, and vWF was evaluated to characterize the EPC differentiation into mature endothelial cells. Other cellular parameters analyzed included the cell size and complexity, intracellular calcium, and intracellular content of the reactive oxygen species. The results obtained indicate that the ions released by MBG-75S promote osteogenesis and angiogenesis in vitro, evidencing a macrophage inhibitory role in these processes and demonstrating the high potential of MBG-75S for the preparation of implants for bone regeneration.

scholarly journals ACUTE CORONARY SYNDROMES AND DEPRESSION: ROLE OF CIRCULATING ENDOTHELIAL PROGENITOR CELLS

2013 ◽  
Vol 61 (10) ◽  
pp. E1371
Author(s):  
Francesca Felice ◽  
Rossella Di Stefano ◽  
Stefano Pini ◽  
Gianfranco Mazzotta ◽  
Francesco M. Bovenzi ◽  
...  
Keyword(s):  
Progenitor Cells ◽  
Endothelial Progenitor Cells ◽  
Acute Coronary Syndromes ◽  
Endothelial Progenitor ◽  
Circulating Endothelial Progenitor Cells ◽  
Coronary Syndromes

AB0147 Oxidative stress and flogosis: The role of endothelial progenitor cells in rheumathoid arthtritis

2013 ◽  
Vol 71 (Suppl 3) ◽  
pp. 646.1-646
Author(s):  
A. Lo Gullo ◽  
G. Mandraffino ◽  
A. Sardo ◽  
A. D’Ascola ◽  
E. Imbalzano ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Progenitor Cells ◽  
Endothelial Progenitor Cells ◽  
Endothelial Progenitor
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