Cheng, I-Fen

[["dc.bibliographiccitation.issue","16"],["dc.bibliographiccitation.journal","Circulation"],["dc.bibliographiccitation.volume","116"],["dc.contributor.author","Heida, Nana-Maria"],["dc.contributor.author","Schroeter, M. R."],["dc.contributor.author","Cheng, I-Fen"],["dc.contributor.author","Mueller, Jan-Peter"],["dc.contributor.author","Hasenfuß, Gerd"],["dc.contributor.author","Konstantindes, Stavros"],["dc.contributor.author","Schaefer, Katrin"],["dc.date.accessioned","2018-11-07T10:57:45Z"],["dc.date.available","2018-11-07T10:57:45Z"],["dc.date.issued","2007"],["dc.format.extent","839"],["dc.identifier.isi","000250394303788"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/50323"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Lippincott Williams & Wilkins"],["dc.publisher.place","Philadelphia"],["dc.relation.conference","80th Annual Scientific Session of the American-Heart-Association"],["dc.relation.eventlocation","Orlando, FL"],["dc.relation.issn","0009-7322"],["dc.title","Effects of obesity and weight loss on the functional properties of endothelial progenitor cells"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","207"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Journal of Vascular Research"],["dc.bibliographiccitation.lastpage","220"],["dc.bibliographiccitation.volume","49"],["dc.contributor.author","Cheng, I-Fen"],["dc.contributor.author","Kaiser, Diana"],["dc.contributor.author","Huebscher, Daniela"],["dc.contributor.author","Hasenfuß, Gerd"],["dc.contributor.author","Guan, Kaomei"],["dc.contributor.author","Schaefer, Katrin"],["dc.date.accessioned","2017-09-07T11:43:10Z"],["dc.date.available","2017-09-07T11:43:10Z"],["dc.date.issued","2012"],["dc.description.abstract","Pluripotent stem cells hold great promise for the treatment of cardiovascular disease. We previously described multipotent adult germline stem cells (maGSCs) from mouse testis with differentiation potential similar to embryonic stem cells. The aim of this work was to differentiate maGSCs into functional endothelial cells and to study their potential for vasculogenesis. MaGSCs were cocultivated with OP9 stromal cells to induce differentiation into cardiovascular progenitors, i.e. fetal liver kinase 1-positive (Flk-1(+)) cells. Five days later, Flk-1(+) cells were separated using fluorescence-activated cell sorting, followed by cultivation on collagen type IV under endothelial differentiation conditions. At different time points, maGSC-derived endothelial-like cells were characterized using RT-PCR, flow cytometry, immunofluorescence and functional assays. Cultivation of Flk-1(+) cells resulted in the progressive upregulation of endothelial cell markers, including VE-cadherin, von Willebrand factor and endothelial nitric oxide synthase. Moreover, Flk-1(+) maGSC-derived endothelial-like cells were able to branch and form networks in vitro and promoted functional blood vessel formation in vivo. Importantly, Flk-1(+) cells retained their potential to proliferate and could be continuously expanded, while the ability of contact inhibition was preserved. Thus, maGSCs may provide a useful source of endothelial-like cells to study the basic mechanisms of vasculogenesis or endothelial differentiation. Copyright 2012S. Karger AG, Basel"],["dc.identifier.doi","10.1159/000332910"],["dc.identifier.gro","3142600"],["dc.identifier.isi","000303967900003"],["dc.identifier.pmid","22433575"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/9087"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/22"],["dc.notes.intern","WoS Import 2017-03-10"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation.issn","1018-1172"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Differentiation of Multipotent Adult Germ line Stem Cells Derived from Mouse Testis into Functional Endothelial Cells"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","357"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Journal of the American College of Cardiology"],["dc.bibliographiccitation.lastpage","367"],["dc.bibliographiccitation.volume","55"],["dc.contributor.author","Heida, Nana-Maria"],["dc.contributor.author","Mueller, Jan-Peter"],["dc.contributor.author","Cheng, I-Fen"],["dc.contributor.author","Leifheit-Nestler, Maren"],["dc.contributor.author","Faustin, Vivien"],["dc.contributor.author","Riggert, Joachim"],["dc.contributor.author","Hasenfuß, Gerd"],["dc.contributor.author","Konstantinides, Stavros"],["dc.contributor.author","Schaefer, Katrin"],["dc.date.accessioned","2017-09-07T11:46:10Z"],["dc.date.available","2017-09-07T11:46:10Z"],["dc.date.issued","2010"],["dc.description.abstract","Objectives The purpose of this study was to examine the impact of obesity and weight loss on the angiogenic and regenerative capacity of endothelial progenitor cells (EPCs). Background EPCs participate in angiogenesis and tissue repair. Several cardiovascular risk factors are associated with EPC dysfunction. Methods Early outgrowth EPCs were isolated from 49 obese (age 42 +/- 14 years; body mass index 42 +/- 7 kg/m(2)) normo-glycemic participants in a professional weight reduction program and compared with those from 49 age-matched lean controls. EPC function was tested both in vitro and in vivo. Results EPCs expanded from the obese possessed reduced adhesive, migratory, and angiogenic capacity, and mice treated with obese EPCs exhibited reduced EPC homing in ischemic hind limbs in vivo. EPCs from the obese subjects failed to respond to conditioned medium of lean controls or to potent angiogenic factors such as vascular endothelial growth factor. Although no differences existed between lean and obese EPCs regarding the surface expression of vascular endothelial growth factor or chemokine receptors, basal p38 mitogen-activated protein kinase (MAPK) phosphorylation was elevated in obese EPCs (3.7 +/- 2.1-fold increase; p = 0.006). These cells also showed reduced secretion of the angiogenic chemokines interleukin-8 (p = 0.047) and monocyte chemoattractant protein-1 (p = 0.012). By inhibiting p38 MAPK, we could restore chemokine levels to those of lean control EPCs and also improve the angiogenic properties of obese EPCs. Accordingly, 6-month follow-up of 26 obese persons who achieved significant weight reduction revealed normalization of p38 MAPK phosphorylation levels and improved EPC function. Conclusions Obesity is associated with a reversible functional impairment of EPCs. This involves reduced secretion of angiogenic chemokines and increased basal phosphorylation of signaling molecules, notably p38 MAPK. (J Am Coll Cardiol 2010; 55: 357-67) (C) 2010 by the American College of Cardiology Foundation"],["dc.identifier.doi","10.1016/j.jacc.2009.09.031"],["dc.identifier.gro","3142979"],["dc.identifier.isi","000273802200013"],["dc.identifier.pmid","20117442"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/6292"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/442"],["dc.notes.intern","WoS Import 2017-03-10"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Elsevier Science Inc"],["dc.relation.issn","0735-1097"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Effects of Obesity and Weight Loss on the Functional Properties of Early Outgrowth Endothelial Progenitor Cells"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","200"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Arteriosclerosis, Thrombosis, and Vascular Biology"],["dc.bibliographiccitation.lastpage","206"],["dc.bibliographiccitation.volume","30"],["dc.contributor.author","Heida, Nana-Maria"],["dc.contributor.author","Leifheit-Nestler, Maren"],["dc.contributor.author","Schroeter, Marco R."],["dc.contributor.author","Mueller, Jan-Peter"],["dc.contributor.author","Cheng, I-Fen"],["dc.contributor.author","Henkel, Sarah"],["dc.contributor.author","Limbourg, Anne"],["dc.contributor.author","Limbourg, Florian P."],["dc.contributor.author","Alves, Frauke"],["dc.contributor.author","Quigley, James P."],["dc.contributor.author","Ruggeri, Zaverio M."],["dc.contributor.author","Hasenfuß, Gerd"],["dc.contributor.author","Konstantinides, Stavros"],["dc.contributor.author","Schaefer, Katrin"],["dc.date.accessioned","2017-09-07T11:46:10Z"],["dc.date.available","2017-09-07T11:46:10Z"],["dc.date.issued","2010"],["dc.description.abstract","Objective-To investigate the capacity of the adipokine leptin to promote angiogenesis by modulating the function of circulating angiogenic cells (CACs). Methods and Results-In vitro, leptin specifically promoted CAC adhesion to tubular endothelial structures and migration along outgrowing sprouts of endothelial cells. In vivo, stimulation of CACs with leptin increased their capacity to promote new vessel formation in the chorioallantoic membrane of chicken embryos and to improve neovascularization of ischemic murine hind limbs. These effects required the phosphorylation of alpha v beta 5 integrins, which depended on the interaction of leptin with its receptor ObR, and on Janus kinase (JAK) 2- and phospholipase C (PLC) gamma-mediated activation of Src kinase. Protein tyrosine phosphatase 1B, a negative regulator of leptin signaling, was overexpressed in CACs from obese, hyperleptinemic individuals, and this was associated with insensitivity of CACs to the angiogenic effects of leptin. Weight loss (by 30 +/- 15 kg) normalized protein tyrosine phosphatase 1B expression in CACs and restored their responsiveness to leptin. A similar dose- dependent response was found after incubation of CACs from obese subjects with a protein tyrosine phosphatase 1B inhibitor ex vivo. Conclusion-Our results point to the ObR-Src kinase-alpha v beta 5 cross talk as a distinct novel component of the network of specific interactions between integrins and cytokine receptors in angiogenesis. (Arterioscler Thromb Vasc Biol. 2010; 30: 200-206.)"],["dc.identifier.doi","10.1161/ATVBAHA.109.192807"],["dc.identifier.gro","3142969"],["dc.identifier.isi","000273799900014"],["dc.identifier.pmid","19910644"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/431"],["dc.notes.intern","WoS Import 2017-03-10 / Funder: National Institutes of Health [NIH HL-75736]"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation.issn","1079-5642"],["dc.title","Leptin Enhances the Potency of Circulating Angiogenic Cells Via Src Kinase and Integrin alpha v beta 5 Implications for Angiogenesis in Human Obesity"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","16"],["dc.bibliographiccitation.journal","Circulation"],["dc.bibliographiccitation.volume","116"],["dc.contributor.author","Heida, Nana-Maria"],["dc.contributor.author","Schroeter, M. R."],["dc.contributor.author","Cheng, I-Fen"],["dc.contributor.author","Deryugina, Elena I."],["dc.contributor.author","Korff, Thomas"],["dc.contributor.author","Quigley, James P."],["dc.contributor.author","Ruggeri, Zaverio M."],["dc.contributor.author","Mueller, Jan-Peter"],["dc.contributor.author","Hasenfuß, Gerd"],["dc.contributor.author","Konstantmides, Stavros"],["dc.contributor.author","Schaefer, Katrin"],["dc.date.accessioned","2018-11-07T10:57:41Z"],["dc.date.available","2018-11-07T10:57:41Z"],["dc.date.issued","2007"],["dc.format.extent","175"],["dc.identifier.isi","000250394300776"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/50313"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Lippincott Williams & Wilkins"],["dc.publisher.place","Philadelphia"],["dc.relation.conference","80th Annual Scientific Session of the American-Heart-Association"],["dc.relation.eventlocation","Orlando, FL"],["dc.relation.issn","0009-7322"],["dc.title","Leptin potentiates the angiogenic properties of endothelial progenitor cells in vitro and in vivo"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","21"],["dc.bibliographiccitation.journal","Circulation"],["dc.bibliographiccitation.volume","122"],["dc.contributor.author","Schroeter, M. R."],["dc.contributor.author","Stein, Susanne"],["dc.contributor.author","Heida, Nana-Maria"],["dc.contributor.author","Leifheit-Nestler, Maren"],["dc.contributor.author","Christiansen, Hans"],["dc.contributor.author","Cheng, I-Fen"],["dc.contributor.author","Shah, Ajay M."],["dc.contributor.author","Hasenfuß, Gerd"],["dc.contributor.author","Konstantinides, Stavros V."],["dc.contributor.author","Schaefer, Katrin"],["dc.date.accessioned","2018-11-07T08:36:40Z"],["dc.date.available","2018-11-07T08:36:40Z"],["dc.date.issued","2010"],["dc.identifier.isi","000208231600521"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/18371"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Lippincott Williams & Wilkins"],["dc.publisher.place","Philadelphia"],["dc.relation.issn","0009-7322"],["dc.title","Leptin Promotes the Mobilization of Fetal Liver Kinase 1-Positive Vascular Progenitor Cells From the Bone Marrow in a NOX2/MMP9-dependent Manner and Enhances Neovascularization after Ischemia"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","18"],["dc.bibliographiccitation.journal","Circulation"],["dc.bibliographiccitation.volume","118"],["dc.contributor.author","Heida, Nana-Maria"],["dc.contributor.author","Mueller, Jan-Peter"],["dc.contributor.author","Cheng, I-Fen"],["dc.contributor.author","Hasenfuß, Gerd"],["dc.contributor.author","Konstantinides, Stavros V."],["dc.contributor.author","Schaefer, Katrin"],["dc.date.accessioned","2018-11-07T11:09:53Z"],["dc.date.available","2018-11-07T11:09:53Z"],["dc.date.issued","2008"],["dc.format.extent","S509"],["dc.identifier.isi","000262104501258"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/53098"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Lippincott Williams & Wilkins"],["dc.publisher.place","Philadelphia"],["dc.relation.conference","81st Annual Scientific Session of the American-Heart-Association"],["dc.relation.eventlocation","New Orleans, LA"],["dc.relation.issn","0009-7322"],["dc.title","Mechanisms Mediating The Proangiogenic Effects Of Leptin On Endothelial Progenitor Cells From Lean And Obese Individuals"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","170"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Cardiovascular Research"],["dc.bibliographiccitation.lastpage","180"],["dc.bibliographiccitation.volume","93"],["dc.contributor.author","Schroeter, Marco R."],["dc.contributor.author","Stein, Susanne"],["dc.contributor.author","Heida, Nana-Maria"],["dc.contributor.author","Leifheit-Nestler, Maren"],["dc.contributor.author","Cheng, I-Fen"],["dc.contributor.author","Gogiraju, Rajinikanth"],["dc.contributor.author","Christiansen, Hans"],["dc.contributor.author","Maier, Lars S."],["dc.contributor.author","Shah, Ajay M."],["dc.contributor.author","Hasenfuß, Gerd"],["dc.contributor.author","Konstantinides, Stavros"],["dc.contributor.author","Schaefer, Katrin"],["dc.date.accessioned","2017-09-07T11:43:14Z"],["dc.date.available","2017-09-07T11:43:14Z"],["dc.date.issued","2012"],["dc.description.abstract","Aims Bone marrow (BM) progenitors participate in new vessel formation and endothelial repair. The leptin receptor (ObR) is expressed on hematopoietic cells; however, the effects of leptin on BM progenitor cells and their angiogenic potential are unknown. Methods and results In the present study, we show that the short-term administration of leptin (over five consecutive days) into wild-type mice increased the number of circulating, BM-derived sca-1(+), flk-1(+) vascular progenitors, 95 +/- 1.7% of which also expressed ObR. Ex vivo stimulation of BM cells with leptin enhanced the expression of NADPH oxidase isoform 2 (NOX2), and the leptin-induced increase in reactive oxygen species production, matrix metalloproteinase-9 (MMP9) expression and circulating soluble KitL levels was absent in mice lacking NOX2. Furthermore, intraperitoneal injections of leptin improved perfusion and increased the number of BM-derived, CD31-positive endothelial cells in ischaemic hindlimbs after femoral artery ligation. The effects of leptin on the mobilization of sca-1(+), flk-1(+) cells and neovascularization were abolished in mice transplanted with BM from ObR-deficient and in NOX2(-/-) mice. Conclusion Our findings suggest that the angiogenic effects of leptin involve sca-1(+), flk-1(+) vascular progenitor cells mobilized from the BM in response to ObR-mediated activation of NOX2, increased MMP9 expression, and sKitL release."],["dc.identifier.doi","10.1093/cvr/cvr275"],["dc.identifier.gro","3142608"],["dc.identifier.isi","000298381600022"],["dc.identifier.pmid","22065732"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/31"],["dc.notes.intern","WoS Import 2017-03-10"],["dc.notes.status","final"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation.issn","0008-6363"],["dc.title","Leptin promotes the mobilization of vascular progenitor cells and neovascularization by NOX2-mediated activation of MMP9"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Journal of Molecular and Cellular Cardiology"],["dc.bibliographiccitation.volume","45"],["dc.contributor.author","Guan, Kaomei"],["dc.contributor.author","Kaiser, Diana"],["dc.contributor.author","Cheng, I.-F."],["dc.contributor.author","Unsoeld, Bernhard W."],["dc.contributor.author","Schaefer, K."],["dc.contributor.author","Hasenfuß, Gerd"],["dc.date.accessioned","2018-11-07T11:10:39Z"],["dc.date.available","2018-11-07T11:10:39Z"],["dc.date.issued","2008"],["dc.format.extent","S1"],["dc.identifier.doi","10.1016/j.yjmcc.2008.09.592"],["dc.identifier.isi","000260844600003"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/53253"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Academic Press Ltd- Elsevier Science Ltd"],["dc.publisher.place","London"],["dc.relation.conference","25th Annual Meeting of the Japanese Section of the International-Society-for-Heart-Research"],["dc.relation.eventlocation","Yokohama, JAPAN"],["dc.relation.issn","1095-8584"],["dc.relation.issn","0022-2828"],["dc.title","Distingished Award Lecture Adult Pluripotent Cells for Cardiac Regeneration"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","Human Gene Therapy"],["dc.bibliographiccitation.volume","20"],["dc.contributor.author","Kaiser, Diana"],["dc.contributor.author","Cheng, I-Fen"],["dc.contributor.author","Unsoeld, Bernhard W."],["dc.contributor.author","Toischer, Karl"],["dc.contributor.author","Schaefer, Katrin"],["dc.contributor.author","Hasenfuß, Gerd"],["dc.contributor.author","Guan, Kaomei"],["dc.date.accessioned","2018-11-07T11:22:42Z"],["dc.date.available","2018-11-07T11:22:42Z"],["dc.date.issued","2009"],["dc.format.extent","1387"],["dc.identifier.isi","000271441000119"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/56032"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Mary Ann Liebert Inc"],["dc.publisher.place","New rochelle"],["dc.relation.conference","Combined Meeting of the 17th European-Society-of-Gene-and-Cell-Therapy/16th German-Society-for-Gene-Therapy/4th German-Society-for-Stem-Cell-Research"],["dc.relation.eventlocation","Hannover, GERMANY"],["dc.relation.issn","1043-0342"],["dc.title","Generation of cardiovascular progenitors from multipotent adult mouse germline stem cells"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]