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https://www.readbyqxmd.com/read/28640846/endothelial-angiogenesis-is-directed-by-runx1t1-regulated-vegfa-bmp4-and-tgf-%C3%AE-2-expression
#1
Ko-Hsun Liao, Shing-Jyh Chang, Hsin-Chuan Chang, Chen-Li Chien, Tse-Shun Huang, Te-Chia Feng, Wen-Wei Lin, Chuan-Chi Shih, Muh-Hwa Yang, Shung-Haur Yang, Chi-Hung Lin, Wei-Lun Hwang, Oscar K Lee
Tissue angiogenesis is intimately regulated during embryogenesis and postnatal development. Defected angiogenesis contributes to aberrant development and is the main complication associated with ischemia-related diseases. We previously identified the increased expression of RUNX1T1 in umbilical cord blood-derived endothelial colony-forming cells (ECFCs) by gene expression microarray. However, the biological relevance of RUNX1T1 in endothelial lineage is not defined clearly. Here, we demonstrate RUNX1T1 regulates the survival, motility and tube forming capability of ECFCs and EA...
2017: PloS One
https://www.readbyqxmd.com/read/28631889/microrna-containing-extracellular-vesicles-released-from-endothelial-colony-forming-cells-modulate-angiogenesis-during-ischaemic-retinopathy
#2
Margaret Dellett, Eoin D Brown, Jasenka Guduric-Fuchs, Anna O'Connor, Alan W Stitt, Reinhold J Medina, David A Simpson
Endothelial colony-forming cells (ECFCs) are a defined subtype of endothelial progenitors that modulate vascular repair and promote perfusion in ischaemic tissues. Their paracrine activity on resident vasculature is ill-defined, but mediated, at least in part, by the transfer of extracellular vesicles (EVs). To evaluate the potential of isolated EVs to provide an alternative to cell-based therapies, we first performed a physical and molecular characterization of those released by ECFCs. Their effects upon endothelial cells in vitro and angiogenesis in vivo in a model of proliferative retinopathy were assessed...
June 20, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28607561/the-transcription-factor-nrf2-protects-angiogenic-capacity-of-endothelial-colony-forming-cells-in-high-oxygen-radical-stress-conditions
#3
Hendrik Gremmels, Olivier G de Jong, Diënty H Hazenbrink, Joost O Fledderus, Marianne C Verhaar
BACKGROUND: Endothelial colony forming cells (ECFCs) have shown a promise in tissue engineering of vascular constructs, where they act as endothelial progenitor cells. After implantation, ECFCs are likely to be subjected to elevated reactive oxygen species (ROS). The transcription factor Nrf2 regulates the expression of antioxidant enzymes in response to ROS. METHODS: Stable knockdown of Nrf2 and Keap1 was achieved by transduction with lentiviral shRNAs; activation of Nrf2 was induced by incubation with sulforaphane (SFN)...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28607361/a-novel-strategy-to-engineer-pre-vascularized-full-length-dental-pulp-like-tissue-constructs
#4
Avathamsa Athirasala, Fernanda Lins, Anthony Tahayeri, Monica Hinds, Anthony J Smith, Christine Sedgley, Jack Ferracane, Luiz E Bertassoni
The requirement for immediate vascularization of engineered dental pulp poses a major hurdle towards successful implementation of pulp regeneration as an effective therapeutic strategy for root canal therapy, especially in adult teeth. Here, we demonstrate a novel strategy to engineer pre-vascularized, cell-laden hydrogel pulp-like tissue constructs in full-length root canals for dental pulp regeneration. We utilized gelatin methacryloyl (GelMA) hydrogels with tunable physical and mechanical properties to determine the microenvironmental conditions (microstructure, degradation, swelling and elastic modulus) that enhanced viability, spreading and proliferation of encapsulated odontoblast-like cells (OD21), and the formation of endothelial monolayers by endothelial colony forming cells (ECFCs)...
June 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28597778/genomic-stability-of-pulmonary-artery-endothelial-colony-forming-cells-in-culture
#5
Kylie M Drake, Chiara Federici, Heng T Duong, Suzy A Comhair, Serpil C Erzurum, Kewal Asosingh, Micheala A Aldred
Pulmonary vascular remodeling, including proliferation and migration of pulmonary artery endothelial cells (PAEC), is a pathologic hallmark of pulmonary arterial hypertension (PAH). Multiple studies have shown evidence of increased levels of DNA damage and lineage-specific genetic changes in PAH lung vascular cells, suggesting increased genomic instability. Highly proliferative endothelial colony-forming cell (ECFC) clones can be isolated from PAEC. Here we utilized ECFC to track chromosomal copy number of 20 PAH and eight control clones across serial passages using genome-wide microarrays...
April 2017: Pulmonary Circulation
https://www.readbyqxmd.com/read/28499264/initial-clonogenic-potential-of-human-endothelial-progenitor-cells-is-predictive-of-their-further-properties-and-establishes-a-functional-hierarchy-related-to-immaturity
#6
Ségolène Ferratge, Guillaume Ha, Gilles Carpentier, Nassim Arouche, Rümeyza Bascetin, Laurent Muller, Stéphane Germain, Georges Uzan
Endothelial progenitor cells (EPCs) generate in vitro Endothelial Colony Forming Cells (ECFCs) combining features of endothelial and stem/progenitor cells. Their angiogenic properties confer them a therapeutic potential for treating ischemic lesions. They may be isolated from umbilical cord blood (CB-ECFCs) or peripheral adult blood (AB-ECFCs). It is generally accepted that CB-ECFCs are more clonogenic, proliferative and angiogenic than AB-ECFCs. Nevertheless, only a few studies have focused on the functional heterogeneity of CB-ECFCs from different individuals...
May 2017: Stem Cell Research
https://www.readbyqxmd.com/read/28490433/peripheral-blood-cytokine-levels-after-acute-myocardial-infarction-il-1%C3%AE-and-il-6-related-impairment-of-bone-marrow-function
#7
Mahan Shahrivari, Elizabeth Wise, Micheline M Resende, Jonathan J Shuster, Jingnan Zhang, Roberto Bolli, John P Cooke, Joshua M Hare, Timothy D Henry, Aisha Khan, Doris A Taylor, Jay H Traverse, Phillip C Yang, Carl J Pepine, Christopher R Cogle
Rationale: Intracoronary infusion of bone marrow mononuclear cells (BM-MNCs) after acute myocardial infarction (AMI) has led to limited improvement in left ventricular (LV) function. Although experimental AMI models have implicated cytokine-related impairment of progenitor cell function, this response has not been investigated in humans. Objective: To test the hypothesis that peripheral blood (PB) cytokines predict bone marrow (BM) endothelial progenitor cell (EPC) colony outgrowth and cardiac function after AMI...
May 10, 2017: Circulation Research
https://www.readbyqxmd.com/read/28396600/endothelial-colony-forming-cells-and-mesenchymal-progenitor-cells-form-blood-vessels-and-increase-blood-flow-in-ischemic-muscle
#8
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
#9
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/28372279/circulating-endothelial-progenitors-in-vascular-repair
#10
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/28288847/increased-frequency-and-vasculogenic-potential-of-endothelial-colony-forming-cells-in-patients-with-kaposi-s-sarcoma
#11
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
#12
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
#13
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/28258798/breast-and-renal-cancer-derived-endothelial-colony-forming-cells-share-a-common-gene-signature
#14
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/28228404/endothelial-colony-forming-cells-ameliorate-endothelial-dysfunction-via-secreted-factors-following-ischemia-reperfusion-injury
#15
Jason A Collett, Purvi Mehrotra, Allison Crone, W Christopher Shelley, Mervin C Yoder, David P Basile
Damage to endothelial cells contributes to acute kidney injury (AKI) by leading to impaired perfusion. Endothelial colony-forming cells (ECFC) are endothelial precursor cells with high proliferative capacity, pro-angiogenic activity, and in vivo vessel forming potential. We hypothesized that ECFC may ameliorate the degree of AKI and/or promote repair of the renal vasculature following ischemia-reperfusion (I/R). Rat pulmonary microvascular endothelial cells (PMVEC) with high proliferative potential were compared with pulmonary artery endothelial cells (PAEC) with low proliferative potential in rats subjected to renal I/R...
May 1, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28166726/endothelial-colony-forming-cells-ecfcs-in-murine-aki-implications-for-future-cell-based-therapies
#16
D Patschan, K Schwarze, B Tampe, M Zeisberg, S Patschan, G A Müller
BACKGROUND: In recent years, early Endothelial Progenitor Cells (eEPCs) have been proven as effective tool in murine ischemic AKI and in diabetic nephropathy. The mechanisms of eEPC-mediated vasoprotection have been elucidated in detail. Besides producing a diverse range of humoral factors, the cells also act by secreting vasomodulatory microvesicles. Only few data in contrast have been published about the role of so-called Endothelial Colony Forming Cells (ECFCs - late EPCs) in ischemic AKI...
February 6, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28138561/cd44-expression-in-endothelial-colony-forming-cells-regulates-neurovascular-trophic-effect
#17
Susumu Sakimoto, Valentina Marchetti, Edith Aguilar, Kelsey Lee, Yoshihiko Usui, Salome Murinello, Felicitas Bucher, Jennifer K Trombley, Regis Fallon, Ravenska Wagey, Carrie Peters, Elizabeth L Scheppke, Peter D Westenskow, Martin Friedlander
Vascular abnormalities are a common component of eye diseases that often lead to vision loss. Vaso-obliteration is associated with inherited retinal degenerations, since photoreceptor atrophy lowers local metabolic demands and vascular support to those regions is no longer required. Given the degree of neurovascular crosstalk in the retina, it may be possible to use one cell type to rescue another cell type in the face of severe stress, such as hypoxia or genetically encoded cell-specific degenerations. Here, we show that intravitreally injected human endothelial colony-forming cells (ECFCs) that can be isolated and differentiated from cord blood in xeno-free media collect in the vitreous cavity and rescue vaso-obliteration and neurodegeneration in animal models of retinal disease...
January 26, 2017: JCI Insight
https://www.readbyqxmd.com/read/28122380/dysregulation-of-vascular-endothelial-growth-factor-receptor-2-by-multiple-mirnas-in-endothelial-colony-forming-cells-of-coronary-artery-disease
#18
Shu-Han Su, Chun-Hsien Wu, Ya-Lin Chiu, Shing-Jyh Chang, Hung-Hao Lo, Ko-Hsun Liao, Cheng-Fong Tsai, Tsung-Neng Tsai, Chi-Hung Lin, Shu-Meng Cheng, Cheng-Chung Cheng, Hsei-Wei Wang
BACKGROUND/AIMS: Endothelial colony-forming cells (ECFCs) have the potential to be used in regenerative medicine. Dysfunction of ECFCs is correlated with the onset of cardiovascular disorders, especially coronary artery disease (CAD). Binding of vascular endothelial growth factor A (VEGFA) to vascular endothelial growth factor receptor-2 (VEGFR2) triggers cell motility and angiogenesis of ECFCs, which are crucial to vascular repair. METHODS: To identify the miRNA-VEGFR2-dependent regulation of ECFC functions, ECFCs isolated from peripheral blood of disease-free and CAD individuals were subjected to small RNA sequencing for identification of anti-VEGFR2 miRNAs...
2017: Journal of Vascular Research
https://www.readbyqxmd.com/read/28100488/kinetic-analyses-of-vasculogenesis-inform-mechanistic-studies
#19
Kaela M Varberg, Seth Winfree, Chenghao Chu, Wanzhu Tu, Emily K Blue, Cassandra R Gohn, Kenneth W Dunn, Laura S Haneline
Vasculogenesis is a complex process by which endothelial stem and progenitor cells undergo de novo vessel formation. Quantitative assessment of vasculogenesis is a central readout of endothelial progenitor cell functionality. However, current assays lack kinetic measurements. To address this issue, new approaches were developed to quantitatively assess in vitro endothelial colony-forming cell (ECFC) network formation in real time. Eight parameters of network structure were quantified using novel Kinetic Analysis of Vasculogenesis (KAV) software...
April 1, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/28100035/stromal-cells-act-as-guardians-for-endothelial-progenitors-by-reducing-their-immunogenicity-after-co-transplantation
#20
Naima Souidi, Meaghan Stolk, Juliane Rudeck, Dirk Strunk, Katharina Schallmoser, Hans-Dieter Volk, Martina Seifert
Regeneration of injured tissues requires effective therapeutic strategies supporting vasculogenesis. The lack of instantly available autologous cell sources and immunogenicity of allogeneic endothelial (progenitor) cells limits clinical progress. Based on the immunosuppressive potency of mesenchymal stem/progenitor cells (MSCs), we investigated whether crosstalk between endothelial colony-forming progenitor cells (ECFCs) and MSCs during vasculogenesis could lower allogeneic T cell responses against ECFCs allowing long-term engraftment in vivo...
May 2017: Stem Cells
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