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Endothelial colony forming cell

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https://www.readbyqxmd.com/read/28396600/endothelial-colony-forming-cells-and-mesenchymal-progenitor-cells-form-blood-vessels-and-increase-blood-flow-in-ischemic-muscle
#1
Kyu-Tae Kang, Ruei-Zeng Lin, David Kuppermann, Juan M Melero-Martin, Joyce Bischoff
Here we investigated whether endothelial colony forming cells (ECFC) and mesenchymal progenitor cells (MPC) form vascular networks and restore blood flow in ischemic skeletal muscle, and whether host myeloid cells play a role. ECFC + MPC, ECFC alone, MPC alone, or vehicle alone were injected into the hind limb ischemic muscle one day after ligation of femoral artery and vein. At day 5, hind limbs injected with ECFC + MPC showed greater blood flow recovery compared with ECFC, MPC, or vehicle. Tail vein injection of human endothelial specific Ulex europaeus agglutinin-I demonstrated an increased number of perfused human vessels in ECFC + MPC compared with ECFC...
April 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28394933/the-acute-impact-of-high-dose-lipid-lowering-treatment-on-endothelial-progenitor-cells-in-patients-with-coronary-artery-disease-the-remedy-epc-early-substudy
#2
Rosalinda Madonna, Francesca Vera Renna, Paola Lanuti, Matteo Perfetti, Marco Marchisio, Carlo Briguori, Gerolama Condorelli, Lamberto Manzoli, Raffaele De Caterina
RATIONALE AND OBJECTIVE: Endothelial progenitor cells (EPCs) play a role in vascular repair, while circulating endothelial cells (CECs) are biomarkers of vascular damage and regeneration. Statins may promote EPC/CEC mobilization in the peripheral blood. We evaluated whether pre-procedural exposure to different lipid-lowering drugs (statins±ezetimibe) can acutely increase levels/activity of EPCs/CECs in patients with stable coronary artery disease (CAD). METHODS: In a planned sub-analysis of the Rosuvastatin For REduction Of Myocardial DamagE During Coronary AngioplastY (REMEDY) trial, 38 patients with stable CAD on chronic low-dose statin therapy were randomized, in a double-blind, placebo-controlled design, into 4 groups before PCI: i...
2017: PloS One
https://www.readbyqxmd.com/read/28381471/sox17-regulates-conversion-of-human-fibroblasts-into-endothelial-cells-and-erythroblasts-via-de-differentiation-into-cd34-progenitor-cells
#3
Lianghui Zhang, Ankit Jambusaria, Zhigang Hong, Glenn Marsboom, Peter T Toth, Brittney-Shea Herbert, Asrar B Malik, Jalees Rehman
Background -The mechanisms underlying the de-differentiation and lineage conversion of adult human fibroblasts into functional endothelial cells have not yet been fully defined. Furthermore, it is not known whether fibroblast de-differentiation recapitulates the generation of multipotent progenitors during embryonic development which give rise to endothelial and hematopoietic cell lineages. Here we established the role of the developmental transcription factor SOX17 in regulating the bi-lineage conversion of fibroblasts via the generation of intermediate progenitors...
April 5, 2017: Circulation
https://www.readbyqxmd.com/read/28376375/characterizing-responses-to-gamma-radiation-by-a-highly-clonogenic-fish-brain-endothelial-cell-line
#4
Nguyen T K Vo, Bibi S H Sokeechand, Colin B Seymour, Carmel E Mothersill
PURPOSE: The clonogenic property and radiobiological responses of a fish brain endothelial cell line, eelB, derived from the American eel were studied. METHODS: Clonogenic assays were performed to determine the plating efficiency of the eelB cells and to evaluate the clonogenic survival fractions after direct irradiation to low-dose low-LET gamma radiation or receiving irradiated cell conditioned medium in the bystander effect experiments. RESULT: eelB had the second highest plating efficiency ever reported to date for fish cell lines...
April 1, 2017: Environmental Research
https://www.readbyqxmd.com/read/28372279/circulating-endothelial-progenitors-in-vascular-repair
#5
S Ferratge, J Boyer, N Arouch, F Chevalier, G Uzan
Endothelial Colony Forming Cells (ECFCs) are obtained in culture from Circulating Endothelial Progenitor Cells. They display all characteristics of endothelial cells and they display stem cells features. Cord blood-derived ECFCs (CB-ECFCs) have a high clonogenic and proliferative potentials, and exhibit vascular repair capabilities useful for the treatment of ischemic diseases. However, the link between immaturity and functional properties of CB-ECFCs is still poorly defined. We showed that these cells have a high clonogenic potential and are capable to be efficiently reprogrammed into induced pluripotent stem cells...
2017: Bio-medical Materials and Engineering
https://www.readbyqxmd.com/read/28366194/effects-of-a-defined-xeno-free-medium-on-the-growth-and-neurotrophic-and-angiogenic-properties-of-human-adult-stem-cells
#6
Maria Brohlin, Peyman Kelk, Mikael Wiberg, Paul J Kingham
BACKGROUND: The growth properties and neurotrophic and angiogenic effects of human mesenchymal stromal cells (MSCs) cultured in a defined xeno-free, serum-free medium (MesenCult-XF) were investigated. METHODS: Human MSCs from adipose tissue (ASCs) and bone marrow (BMSCs) were cultured in Minimum Essential Medium-alpha (α-MEM) containing fetal calf serum or in MesenCult-XF. Proliferation was measured over 10 passages and the colony-forming unit (CFU) assay and expression of cluster of differentiation (CD) surface markers were determined...
May 2017: Cytotherapy
https://www.readbyqxmd.com/read/28347875/therapeutic-implication-of-iturin-a-for-targeting-md-2-tlr4-complex-to-overcome-angiogenesis-and-invasion
#7
Goutam Dey, Rashmi Bharti, Probir Kumar Ojha, Ipsita Pal, Y Rajesh, Indranil Banerjee, Payel Banik, Sheetal Parida, Aditya Parekh, Ramkrishna Sen, Mahitosh Mandal
Tumor angiogenesis and invasion are deregulated biological processes that drive multistage transformation of tumors from a benign to a life-threatening malignant state activating multiple signaling pathways including MD-2/TLR4/NF-κB. Development of potential inhibitors of this signaling is emerging area for discovery of novel cancer therapeutics. In the current investigation, we identified Iturin A (A lipopeptide molecule from Bacillus megaterium) as a potent inhibitor of angiogenesis and cancer invasion by various in vitro and in vivo methods...
March 24, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28340040/impaired-ability-to-grow-colonies-of-endothelial-stem-cells-could-be-the-mechanism-explaining-the-high-cardiovascular-morbidity-mortality-of-patients-with-depression
#8
Blum Arnon, Pastukh Nina, Zaroura Imad, Jonathan Rotem, Farhat Kamal
Background: Subjects with depression are more prone to develop cardiovascular complications. Severity of depression is associated with higher rates of cardiovascular mortality and morbidity. Several mechanisms were suggested including accelerated atherosclerosis, alteration of the cardiac autonomic response with a decrease in heart rate variability. There is evidence that circulating endothelial progenitor cells (EPCs) are decreased in patients with major depression. Our hypothesis was that patients with depression would have an impaired ability to build colonies of endothelial progenitor cells...
March 9, 2017: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/28339006/substance-p-accelerates-wound-healing-in-type-2-diabetic-mice-through-endothelial-progenitor-cell-mobilization-and-yes-associated-protein-activation
#9
Jihyun Um, Jinyeong Yu, Ki-Sook Park
Wound healing is delayed in diabetes due to a number of factors, including impaired angiogenesis and poor dermal healing. The present study demonstrated that subcutaneous administration of substance P (SP) accelerates wound healing in db/db type 2 diabetic mice (db/db mice). SP injection (10 nM/kg, subcutaneously) enhanced angiogenesis, induced the mobilization of endothelial progenitor cells (EPCs) and increased the number of EPC‑colony forming units (EPC‑CFUs) in the bone marrow of db/db mice. Immunohistochemistry was performed to check the effects of SP on the cellular proliferation and the subcellular localization of Yes-associated protein (YAP) in the wound dermis...
March 21, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28338424/monocytes-seeded-on-engineered-hypertrophic-cartilage-do-not-enhance-endochondral-ossification-capacity
#10
Atanas Todorov, Celeste Scotti, Andrea Barbero, Arnaud Scherberich, Adam Papadimitropoulos, Ivan Martin
Engineered hypertrophic cartilage (HC) represents an attractive bone substitute material, capable to induce bone formation by endochondral ossification. Since bone formation by HC depends on factors released from the extracellular matrix, in this study, we hypothesized that HC seeding with monocytes committed to osteoclastogenesis could enhance its remodeling, improve chemotaxis of skeletal and vascular cells, and consequently enhance bone formation. This would be particularly relevant for devitalized HC, which currently exhibits only limited osteoinductivity...
March 24, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28320472/increased-serum-levels-of-fractalkine-and-mobilisation-of-cd34-cd45-endothelial-progenitor-cells-in-systemic-sclerosis
#11
Audrey Benyamine, Jérémy Magalon, Sylvie Cointe, Romaric Lacroix, Laurent Arnaud, Nathalie Bardin, Pascal Rossi, Yves Francès, Fanny Bernard-Guervilly, Gilles Kaplanski, Jean-Robert Harlé, Pierre-Jean Weiller, Philippe Berbis, David Braunstein, Elisabeth Jouve, Nathalie Lesavre, Françoise Couranjou, Françoise Dignat-George, Florence Sabatier, Pascale Paul, Brigitte Granel
BACKGROUND: The disruption of endothelial homeostasis is a major determinant in the pathogenesis of systemic sclerosis (SSc) and is reflected by soluble and cellular markers of activation, injury and repair. We aimed to provide a combined assessment of endothelial markers to delineate specific profiles associated with SSc disease and its severity. METHODS: We conducted an observational, single-centre study comprising 45 patients with SSc and 41 healthy control subjects...
March 20, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28297579/endothelial-cells-promote-expansion-of-long-term-engrafting-marrow-hematopoietic-stem-and-progenitor-cells-in-primates
#12
Jennifer L Gori, Jason M Butler, Balvir Kunar, Michael G Poulos, Michael Ginsberg, Daniel J Nolan, Zachary K Norgaard, Jennifer E Adair, Shahin Rafii, Hans-Peter Kiem
Successful expansion of bone marrow (BM) hematopoietic stem and progenitor cells (HSPCs) would benefit many HSPC transplantation and gene therapy/editing applications. However, current expansion technologies have been limited by a loss of multipotency and self-renewal properties ex vivo. We hypothesized that an ex vivo vascular niche would provide prohematopoietic signals to expand HSPCs while maintaining multipotency and self-renewal. To test this hypothesis, BM autologous CD34(+) cells were expanded in endothelial cell (EC) coculture and transplanted in nonhuman primates...
March 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28296182/endothelial-progenitors-a-consensus-statement-on-nomenclature
#13
EDITORIAL
Reinhold J Medina, Chad L Barber, Florence Sabatier, Francoise Dignat-George, Juan M Melero-Martin, Kiarash Khosrotehrani, Osamu Ohneda, Anna M Randi, Jerry K Y Chan, Teruhide Yamaguchi, Victor W M Van Hinsbergh, Mervin C Yoder, Alan W Stitt
Endothelial progenitor cell (EPC) nomenclature remains ambiguous and there is a general lack of concordance in the stem cell field with many distinct cell subtypes continually grouped under the term "EPC." It would be highly advantageous to agree standards to confirm an endothelial progenitor phenotype and this should include detailed immunophenotyping, potency assays, and clear separation from hematopoietic angiogenic cells which are not endothelial progenitors. In this review, we seek to discourage the indiscriminate use of "EPCs," and instead propose precise terminology based on defining cellular phenotype and function...
March 10, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28294401/endothelial-progenitor-cell-mobilization-in-preterm-infants-with-sepsis-is-associated-with-improved-survival
#14
Vahid Siavashi, Simin Asadian, Masoud Taheri-Asl, Samaneh Keshavarz, Mohamad Zamani-Ahmadmahmudi, Seyed Mahdi Nassiri
Microvascular dysfunction plays a key role in the pathology of sepsis, leading to multi-organ failure and death. Circulating endothelial progenitor cells (cEPCs) are critically involved in the maintenance of the vascular homeostasis in both physiological and pathological contexts. In this study, concentration of cEPCs in preterm infants with sepsis was determined to recognize whether the EPC mobilization would affect the clinical outcome of infantile sepsis. 133 preterm infants (81 with sepsis and 52 without sepsis) were enrolled in this study...
March 10, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28288847/increased-frequency-and-vasculogenic-potential-of-endothelial-colony-forming-cells-in-patients-with-kaposi-s-sarcoma
#15
Francesca Calcaterra, Lucia Brambilla, Elena Colombo, Athanasia Tourlaki, Stefano Veraldi, Claudia Carenza, Domenico Mavilio, Silvia Della Bella
Kaposi's sarcoma (KS) is characterized by hyperproliferation of spindle cells that have an endothelial origin and assume their characteristic features upon infection with human herpesvirus-8 (HHV8), the causative agent for KS. The multifocal nature of KS suggests that spindle cells derive from circulating HHV8-infected precursors that yet lack identification. We investigated whether ECFCs obtained from KS patients may be putative precursors of spindle cells, by assessing whether their in vitro behavior may evoke the in vivo behavior of KS spindle cells...
March 10, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28276476/mir-193a-3p-interaction-with-hmgb1-downregulates-human-endothelial-cell-proliferation-and-migration
#16
Cheen P Khoo, Maria G Roubelakis, Jack B Schrader, Grigorios Tsaknakis, Rebecca Konietzny, Benedikt Kessler, Adrian L Harris, Suzanne M Watt
Circulating endothelial colony forming cells (ECFCs) contribute to vascular repair where they are a target for therapy. Since ECFC proliferative potential is increased in cord versus peripheral blood and to define regulatory factors controlling this proliferation, we compared the miRNA profiles of cord blood and peripheral blood ECFC-derived cells. Of the top 25 differentially regulated miRNAs selected, 22 were more highly expressed in peripheral blood ECFC-derived cells. After validating candidate miRNAs by q-RT-PCR, we selected miR-193a-3p for further investigation...
March 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28263839/osteoprotegerin-regulates-cancer-cell-migration-through-sdf-1-cxcr4-axis-and-promotes-tumour-development-by-increasing-neovascularization
#17
Zahia Benslimane-Ahmim, Jessica Pereira, Anna Lokajczyk, Blandine Dizier, Isabelle Galy-Fauroux, Anne-Marie Fischer, Dominique Heymann, Catherine Boisson-Vidal
We previously reported that OPG is involved in ischemic tissue neovascularization through the secretion of SDF-1 by pretreated-OPG endothelial colony-forming cells (ECFCs). As the vascularization is one of the key factor influencing the tumour growth and cancer cell dissemination, we investigated whether OPG was able to modulate the invasion of human MNNG-HOS osteosarcoma and DU145 prostate cancer cell lines in vitro and in vivo. Cell motility was analysed in vitro by using Boyden chambers. Human GFP-labelled MMNG-HOS cells were inoculated in immunodeficient mice and the tumour nodules formed were then injected with OPG and/or FGF-2, AMD3100 or 0...
March 3, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28259903/siamese-crocodile-bile-induces-apoptosis-in-nci-h1299-human-non-small-cell-lung-cancer-cells-via-a-mitochondria-mediated-intrinsic-pathway-and-inhibits-tumorigenesis
#18
Ling Tian, Yi-Tao Deng, Xin Dong, Jia-Yi Fan, Hua-Liang Li, Yu-Mei Ding, Wei-Xi Peng, Qing-Xi Chen, Dong-Yan Shen
Non-small-cell lung cancer (NSCLC) is a widespread and particularly aggressive form of cancer. Patients with NSCLC and early metastases typically have poor prognosis, highlighting the critical need for additional drugs to improve disease outcome following surgical resection. The present study aimed to determine if Siamese crocodile bile (SCB) had an anti‑cancer effect on NCI‑H1299 human NSCLC cells. The inhibitory mechanism of SCB was examined in cell culture and nude mice. In vitro experimental results revealed that SCB inhibited the proliferation and colony‑forming ability of NCI‑H1299 cells by arresting cell cycle and inducing apoptosis...
April 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28258798/breast-and-renal-cancer-derived-endothelial-colony-forming-cells-share-a-common-gene-signature
#19
Francesco Moccia, Vittoria Fotia, Richard Tancredi, Matteo Giovanni Della Porta, Vittorio Rosti, Elisa Bonetti, Valentina Poletto, Sergio Marchini, Luca Beltrame, Giulia Gallizzi, Gian Antonio Da Prada, Paolo Pedrazzoli, Alberto Riccardi, Camillo Porta, Alberto Zambelli, Maurizio D'Incalci
BACKGROUND: Neovascularisation supports the metastatic switch in many aggressive solid cancers. Tumour neovessels are mostly lined by endothelial cells sprouting from nearby capillaries, but they could also be contributed by circulating endothelial progenitor cells (EPCs). However, scant information is available about tumour-derived EPCs. METHODS: We carried out the first thorough, unbiased comparison of phenotype, function and genotype of normal versus tumour-derived endothelial colony forming cells (ECFCs), a truly endothelial EPC subtype...
February 28, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28241992/effects-of-maternal-high-fat-diet-and-statin-treatment-on-bone-marrow-endothelial-progenitor-cells-and-cardiovascular-risk-factors-in-female-mice-offspring-fed-a-similar-diet
#20
Maqsood M Elahi, Bashir Mnene Matata
OBJECTIVES: The aim of this study was to prove that one possible statin-related protective mechanism in dams and offspring fed a high-fat diet (HFD) is the reduction in cardiovascular risk and impairment of the vasculogenic element of endothelial regeneration. METHODS: To explore this, virgin C57 BL/6 mice (n = 8/group) were fed an HFD (fat: 45% kcal) or standard chow (C; fat: 21% kcal) from weaning and throughout their pregnancy and lactation. Half of the HFD group also was given the 3-hydroxy-3-methylglutaryl-coenzyme A reductase inhibitor pravastatin (S) through their drinking water (5 mg/kg body weight per day) to create HF+S dam group (n = 8/group)...
March 2017: Nutrition
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