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Isolation of endothelial progenitor cells

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https://www.readbyqxmd.com/read/28935639/isolation-and-characterization-of-endothelial-to-mesenchymal-transition-cells-in-pulmonary-arterial-hypertension
#1
Toshio Suzuki, Erica J Carrier, Megha A Talati, Anandharajan Rathinasabapathy, Xinping Chen, Rintaro Nishimura, Yuji Tada, Koichiro Tatsumi, James D West
Endothelial-to-mesenchymal transition (EndMT) is a process in which endothelial cells lose polarity and cell-to-cell contacts, and undergo a dramatic remodeling of the cytoskeleton. It has been implicated in initiation and progression of pulmonary arterial hypertension (PAH). However, the characteristics of cells which have undergone EndMT-cells in vivo have not been reported and so remain unclear. To study this, sugen5416 and hypoxia (SuHx)-induced PAH was established in Cdh5-Cre / Gt(ROSA)26Sor(tm4(ACTB-tdTomato,-EGFP)Luo)/J double-transgenic mice, in which GFP was stably expressed in pan-endothelial cells...
September 21, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28933121/-effect-of-naoxintong-capsule-on-endothelial-progenitor-cell-mobilization-and-homing-following-bone-marrow-transplantation-in-a-mouse-hind-limb-ischemia-model
#2
Li-Zhen Qiu, Lu Chen, Chun-Xiao Li, Xiao Geng, Xing-Yu You, Lu-Sha Zhang, Hong Wang
Endothelial progenitor cells (EPCs) are precursor cells of endothelial cells. Signal molecules produced by ischemia and hypoxia can promote mobilization of bone marrow EPCs to peripheral circulation and formation of novel blood vessels in tissues that are damaged during heart attack. Naoxintong capsule (NXT) has the functions of promoting blood circulation, removing blood stasis, promoting the circulation of qi and relieving pain. The various components in NXT have protective effects on blood vessels and can effectively improve the symptoms of ischemia...
December 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28924349/autophagy-promotes-degradation-of-polyethyleneimine-alginate-nanoparticles-in-endothelial-progenitor-cells
#3
Guo-Dong Wang, Yu-Zhen Tan, Hai-Jie Wang, Pei Zhou
Polyethyleneimine (PEI)-alginate (Alg) nanoparticle (NP) is a safe and effective vector for delivery of siRNA or DNA. Recent studies suggest that autophagy is related to cytotoxicity of PEI NPs. However, contribution of autophagy to degradation of PEI-Alg NPs remains unknown. CD34(+)VEGFR-3(+) endothelial progenitor cells isolated from rat bone marrow were treated with 25 kDa branched PEI modified by Alg. After treatment with the NPs, morphological changes and distribution of the NPs in the cells were examined with scanning and transmission electron microscopies...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28920705/human-endothelial-progenitor-cell-derived-exosomes-increase-proliferation-and-angiogenesis-in-cardiac-fibroblasts-by-promoting-the-mesenchymal-endothelial-transition-and-reducing-high-mobility-group-box-1-protein-b1-expression
#4
Xiao Ke, Dahao Yang, Jiawen Liang, Xing Wang, Shaoyun Wu, Xiaoqing Wang, Chengheng Hu
Myocardial fibrosis is a characteristic feature of cardiomyopathies. However, no effective strategies to attenuate cardiac fibrosis are currently available. Late-stage endothelial progenitor cells (EPCs) are precursors of endothelial cells (ECs) that repair the heart through a paracrine mechanism. In the present study, we tested whether EPC-derived exosomes regulate the differentiation of fibroblasts into ECs. We isolated late-stage EPCs from human peripheral blood (PB) and used immunofluorescence and flow cytometry to confirm their identity...
September 18, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28915889/anti-fibrotic-efficacy-of-nintedanib-in-pulmonary-fibrosis-via-the-inhibition-of-fibrocyte-activity
#5
Seidai Sato, Shintaro Shinohara, Shinya Hayashi, Shun Morizumi, Shuichi Abe, Hiroyasu Okazaki, Yanjuan Chen, Hisatsugu Goto, Yoshinori Aono, Hirohisa Ogawa, Kazuya Koyama, Haruka Nishimura, Hiroshi Kawano, Yuko Toyoda, Hisanori Uehara, Yasuhiko Nishioka
BACKGROUND: Nintedanib, a tyrosine kinase inhibitor that is specific for platelet-derived growth factor receptors (PDGFR), fibroblast growth factor receptors (FGFR), and vascular endothelial growth factor receptors (VEGFR), has recently been approved for idiopathic pulmonary fibrosis. Fibrocytes are bone marrow-derived progenitor cells that produce growth factors and contribute to fibrogenesis in the lungs. However, the effects of nintedanib on the functions of fibrocytes remain unclear...
September 15, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28910385/improving-the-characterization-of-endothelial-progenitor-cell-subsets-by-an-optimized-facs-protocol
#6
Karin Huizer, Dana A M Mustafa, J Clarissa Spelt, Johan M Kros, Andrea Sacchetti
The characterization of circulating endothelial progenitor cells (EPCs) is fundamental to any study related to angiogenesis. Unfortunately, current literature lacks consistency in the definition of EPC subsets due to variations in isolation strategies and inconsistencies in the use of lineage markers. Here we address critical points in the identification of hematopoietic progenitor cells (HPCs), circulating endothelial cells (CECs), and culture-generated outgrowth endothelial cells (OECs) from blood samples of healthy adults (AB) and umbilical cord (UCB)...
2017: PloS One
https://www.readbyqxmd.com/read/28901383/endothelial-progenitor-cell%C3%A2-derived-extracellular-vesicle%C3%A2-meditated-cell%C3%A2-to%C3%A2-cell-communication-regulates-the-proliferation-and-osteoblastic-differentiation-of-bone-mesenchymal-stromal-cells
#7
Yunhao Qin, Changqing Zhang
Bone tissue engineering is a promising treatment strategy to increase bone regeneration. Endothelial progenitor cells (EPCs) and bone marrow stromal cells (BMSCs) are commonly used to promote vessel formation and osteoblastic differentiation in tissue engineering. Previous studies have demonstrated that EPCs regulate both proliferation and differentiation of BMSCs. However, the underlying mechanism remains unclear. Understanding this mechanism is critical to developing more effective treatments. The role of extracellular vesicles in cell‑to‑cell communication has attracted substantial attention...
August 31, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28899085/correlation-between-nadph-oxidase-mediated-oxidative-stress-and-dysfunction-of-endothelial-progenitor-cell-in-hyperlipidemic-patients
#8
Ting-Bo Li, Yin-Zhuang Zhang, Wei-Qi Liu, Jie-Jie Zhang, Jun Peng, Xiu-Ju Luo, Qi-Lin Ma
Background/Aims: NADPH (nicotinamide adenine dinucleotide phosphate) oxidase (NOX)-mediated oxidative stress plays a key role in promotion of oxidative injury in the cardiovascular system. The aim of this study is to evaluate the status of NOX in endothelial progenitor cells (EPCs) of hyperlipidemic patients and to assess the correlation between NOX activity and the functions EPCs. Methods: A total of 30 hyperlipidemic patients were enrolled for this study and 30 age-matched volunteers with normal level of plasma lipids served as controls...
September 13, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/28869696/comparison-and-functional-characterization-of-peripheral-blood-mononuclear-cells-isolated-from-filarial-lymphedema-and-endemic-normals-of-a-south-indian-population
#9
Abel Arul Nathan, Madhulika Dixit, Subash Babu, Anand Setty Balakrishnan
OBJECTIVE: The underlying problem in lymphatic filariasis is irreversible swelling of the limbs (lymphedema), which is a unique feature of lymphatic insufficiency. It is still unclear whether the natural ability of lymphatics to form functional lymphatic vasculature is achieved or attenuated in the lymphedemal pathology. Clinical studies have clearly shown that circulating lymphatic progenitors (CLPs), a subset of bone-marrow derived mononuclear cells (PBMCs), contribute to post-natal lymph vasculogenesis...
September 4, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28864209/danshensu-accelerates-angiogenesis-after-myocardial-infarction-in-rats-and-promotes-the-functions-of-endothelial-progenitor-cells-through-sdf-1%C3%AE-cxcr4-axis
#10
Ying Yin, Jialin Duan, Chao Guo, Guo Wei, Yanhua Wang, Yue Guan, Fei Mu, Minna Yao, Miaomiao Xi, Aidong Wen
The present study was performed to investigate the potential role of Danshensu in therapeutic angiogenesis in ischemic myocardium and endothelial progenitor cells (EPCs) function. The rat model of myocardial infarction (MI) injury was induced by left anterior descending coronary artery ligation for 14 days. Danshensu significantly alleviated myocardial ischemia injury by ameliorating left ventricular function and reducing infarct size. Furthermore, Danshensu potentiated post-ischemia neovascularization as evidenced by increased microvessel density in infarction boundary zone, as well as the expression of marker proteins vascular endothelial growth factor (VEGF) and basic fibroblast growth factor (bFGF)...
August 31, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28860871/first-in-man-intraglandular-implantation-of-stromal-vascular-fraction-and-adipose-derived-stem-cells-plus-platelet-rich-plasma-in-irradiation-induced-gland-damage-a-case-study
#11
Kristin Comella, Walter Bell
BACKGROUND: Stromal vascular fraction (SVF) is a mixture of cells which can be isolated from a mini-lipoaspirate of fat tissue. Platelet-rich plasma (PRP) is a mixture of growth factors and other nutrients which can be obtained from peripheral blood. Adipose-derived stem/stromal cells (ADSCs) can be isolated from fat tissue and expanded in culture. The SVF includes a variety of different cells such as ADSCs, pericytes, endothelial/progenitor cells, and a mix of different growth factors...
2017: International Medical Case Reports Journal
https://www.readbyqxmd.com/read/28855190/extracellular-vesicles-as-immune-mediators-in-response-to-kidney-injury
#12
Eva Feigerlova, Shyue-Fang Battaglia-Hsu, Thierry Hauet, Jean-Louis Guéant
Important progress has been made on the cytokine signalling in response to kidney injury in the past decade, especially cytokine signalling mediated by extracellular vesicles (EVs). For example, EVs released by injured renal tubular epithelial cells (TECs) can regulate inter-cellular communications and influence tissue recovery via both regulating the expression and transferring cytokines, growth factors, as well as other bioactive molecules at the site of injury. The effects of EVs on kidney tissue seem to vary depending on the sources of EVs; however, the literature data are often inconsistent...
August 30, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28854425/hydrogen-sulfide-preconditioning-of-human-endothelial-progenitor-cells-transplantation-improves-re-endothelialization-in-nude-mice-with-carotid-artery-injury
#13
Xiao Ke, Jun Zou, Qingsong Hu, Xiaoqing Wang, Chengheng Hu, Rongfeng Yang, Jiawen Liang, Xiaorong Shu, Ruqiong Nie, Changnong Peng
BACKGROUND/AIMS: The aim of present study was to test the hypothesis that preconditioning with sodium hydrosulfide (NaHS) could enhance the capacity of migration, adhesion and proliferation of endothelial progenitor cells (EPCs) in vitro, and also could improve the efficacy of EPCs transplantation for re-endothelialization in nude mice with carotid artery injury. The paper further addressed the underlying mechanisms. METHODS: EPCs were isolated from peripheral blood mononuclear cells of healthy male volunteers and the markers of EPCs were analyzed by flow cytometry...
August 31, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28840305/subtypes-of-endothelial-progenitor-cells-affect-healing-of-segmental-bone-defects-differently
#14
Erica M Giles, Charles Godbout, Wendy Chi, Michael A Glick, Tony Lin, Ru Li, Emil H Schemitsch, Aaron Nauth
PURPOSE: Treating fracture nonunion with endothelial progenitor cells (EPCs) is a promising approach. Nevertheless, the effect of different EPC-related cell populations remains unclear. In this study, we compared the therapeutic potential of early (E-EPCs) and late EPCs (L-EPCs). METHODS: Male Fischer 344 rats were used for cell isolation and in vivo experiments. Bone marrow-derived E-EPCs and L-EPCs were kept in culture for seven to ten days and four weeks, respectively...
August 24, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28827082/mfsd2a-promotes-endothelial-generation-of-inflammation-resolving-lipid-mediators-and-reduces-colitis-in-mice
#15
Federica Ungaro, Carlotta Tacconi, Luca Massimino, Paola Antonia Corsetto, Carmen Correale, Philippe Fonteyne, Andrea Piontini, Valeria Garzarelli, Francesca Calcaterra, Silvia Della Bella, Antonino Spinelli, Michele Carvello, Angela Maria Rizzo, Stefania Vetrano, Luciana Petti, Gionata Fiorino, Federica Furfaro, Domenico Mavilio, Krishna Rao Maddipati, Alberto Malesci, Laurent Peyrin-Biroulet, Silvia D'Alessio, Silvio Danese
BACKGROUND & AIMS: Alterations in signaling pathways that regulate resolution of inflammation (resolving pathways) contribute to pathogenesis of ulcerative colitis (UC). The resolution process is regulated by lipid mediators, such as those derived from the ω-3 docosahexaenoic acid (DHA), whose esterified form is transported by the major facilitator superfamily domain containing 2A (MFSD2A) through the endothelium of brain, retina, and placenta. We investigated if and how MFSD2A regulates lipid metabolism of gut endothelial cells to promote resolution of intestinal inflammation...
August 4, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28811655/a-tissue-engineered-blood-vessel-model-of-hutchinson-gilford-progeria-syndrome-using-human-ipsc-derived-smooth-muscle-cells
#16
Leigh Atchison, Haoyue Zhang, Kan Cao, George A Truskey
Hutchison-Gilford Progeria Syndrome (HGPS) is a rare, accelerated aging disorder caused by nuclear accumulation of progerin, an altered form of the Lamin A gene. The primary cause of death is cardiovascular disease at about 14 years. Loss and dysfunction of smooth muscle cells (SMCs) in the vasculature may cause defects associated with HGPS. Due to limitations of 2D cell culture and mouse models, there is a need to develop improved models to discover novel therapeutics. To address this need, we produced a functional three-dimensional model of HGPS that replicates an arteriole-scale tissue engineered blood vessel (TEBV) using induced pluripotent stem cell (iPSC)-derived SMCs from an HGPS patient...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28774328/curcumin-induces-therapeutic-angiogenesis-in-a-diabetic-mouse-hindlimb-ischemia-model-via-modulating-the-function-of-endothelial-progenitor-cells
#17
Jinzhi You, Jiacheng Sun, Teng Ma, Ziying Yang, Xu Wang, Zhiwei Zhang, Jingjing Li, Longgang Wang, Masaaki Ii, Junjie Yang, Zhenya Shen
BACKGROUND: Neovascularization is impaired in diabetes mellitus, which leads to the development of peripheral arterial disease and is mainly attributed to the dysfunction of endothelial progenitor cells (EPCs). Previous studies proved the promotional effect of curcumin on neovascularization in wound healing of diabetes. Thus, we hypothesize that curcumin could promote neovascularization at sites of hindlimb ischemia in diabetes and might take effect via modulating the function of EPCs...
August 3, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28763897/-effect-of-alloxan-induced-diabetes-mellitus-on-the-functions-of-bone-marrow-derived-and-circulating-endothelial-progenitor-cells
#18
Q Tan, G P Li, Q S Wang, C H Zheng, S Y Zhang
Objective: To explore whether diabetes mellitus (DM) impairs functions of bone marrow-derived endothelial progenitor cells (BM-EPC) and circulating EPC. Methods: Diabetic model of rabbit was induced by Alloxan injection and the rabbits were then randomly divided into three groups: BM-EPC group, circulating EPC group, and DM group, with six rabbits in each group. Another 6 normal rabbits were enrolled as normal control group as well. 8 weeks later, BM-EPC and circulating EPC from diabetic and healthy rabbits were isolated and cultured...
July 25, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28757162/an-in%C3%A2-vitro-human-liver-model-by-ipsc-derived-parenchymal-and-non-parenchymal-cells
#19
Yuta Koui, Taketomo Kido, Toshimasa Ito, Hiroki Oyama, Shin-Wei Chen, Yuki Katou, Katsuhiko Shirahige, Atsushi Miyajima
During liver development, hepatoblasts and liver non-parenchymal cells (NPCs) such as liver sinusoidal endothelial cells (LSECs) and hepatic stellate cells (HSCs) constitute the liver bud where they proliferate and differentiate. Accordingly, we reasoned that liver NPCs would support the maturation of hepatocytes derived from human induced pluripotent stem cells (hiPSCs), which usually exhibit limited functions. We found that the transforming growth factor β and Rho signaling pathways, respectively, regulated the proliferation and maturation of LSEC and HSC progenitors isolated from mouse fetal livers...
August 8, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28734678/improvement-of-adipose-tissue-derived-cells-by-low-energy-extracorporeal-shock-wave-therapy
#20
Eleni Priglinger, Christina M A P Schuh, Carolin Steffenhagen, Christoph Wurzer, Julia Maier, Sylvia Nuernberger, Wolfgang Holnthoner, Christiane Fuchs, Susanne Suessner, Dominik Rünzler, Heinz Redl, Susanne Wolbank
BACKGROUND: Cell-based therapies with autologous adipose tissue-derived cells have shown great potential in several clinical studies in the last decades. The majority of these studies have been using the stromal vascular fraction (SVF), a heterogeneous mixture of fibroblasts, lymphocytes, monocytes/macrophages, endothelial cells, endothelial progenitor cells, pericytes and adipose-derived stromal/stem cells (ASC) among others. Although possible clinical applications of autologous adipose tissue-derived cells are manifold, they are limited by insufficient uniformity in cell identity and regenerative potency...
July 19, 2017: Cytotherapy
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