Refine my results

Language

Université de Fribourg

Arginase‐II promotes melanoma migration and adhesion through enhancing hydrogen peroxide production and STAT3 signaling

Yu, Yi ; Ladeiras, Diogo ; Xiong, Yuyan ; Boligan, Kayluz Frias ; Liang, Xiujie ; Gunten, Stephan ; Hunger, Robert E. ; Ming, Xiu‐Fen ; Yang, Zhihong

In: Journal of Cellular Physiology, 2020, p. jcp.29814

Elevated arginase type II (Arg‐II) associates with higher grade tumors. Its function and underlying molecular mechanisms in melanoma remain elusive. In the present study, we observed a significantly higher frequency of Arg‐II expression in melanoma of patients with metastasis than those without metastasis. Silencing Arg‐II in two human melanoma cell lines slowed down the cell growth,...

  • Email: xiu-fen.ming@unifr.ch (X....
  • Targeting arginase would thus be a Yuyan Xiong novel promising therapeutic approach for cancers with elevated XiuFen Ming http://orcid.org/0000-0002-5848-4496 arginase in plasma and/or in the tumors....
  • Ming, X....
Université de Fribourg

Hypoxia enhances endothelial intercellular adhesion molecule 1 protein level through upregulation of arginase type II and mitochondrial oxidative stress

Liang, Xiujie ; Arullampalam, Prakash ; Yang, Zhihong ; Ming, Xiu-Fen

In: Frontiers in Physiology, 2019, vol. 10, p. -

Hypoxia plays a crucial role in the pathogenesis of cardiovascular diseases. Mitochondrial enzyme arginase type II (Arg-II) is reported to lead to endothelial dysfunction and enhance the expression of endothelial inflammatory adhesion molecules such as intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1). In this study, we investigate the role of Arg-II in...

  • ORIGINAL RESEARCH published: 14 August 2019 doi: 10.3389/fphys.2019.01003 Hypoxia Enhances Endothelial Intercellular Adhesion Molecule 1 Protein Level Through Upregulation of Arginase Type II and Mitochondrial Oxidative Stress Xiujie Liang†, Prakash Arullampalam†, Zhihong Yang and Xiu-Fen Ming* Laboratory of Cardiovascular and Aging Research, Medicine Section, Department of Endocrinology, Metabolism, and Cardiovascular System, Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland Edited by: Vincenzo Lionetti, Sant’Anna School of Advanced Studies, Italy Reviewed by: Ningjun Li, Virginia Commonwealth University, United States Francesca Forini, Italian National Research Council, Italy *Correspondence: Xiu-Fen Ming xiu-fen.ming@unifr.ch † These authors have contributed equally to this work Specialty section: This article was submitted to Vascular Physiology, a section of the journal Frontiers in Physiology Received: 04 March 2019 Accepted: 19 July 2019 Published: 14 August 2019 Citation: Liang X, Arullampalam P, Yang Z and Ming X-F (2019) Hypoxia Enhances Endothelial Intercellular Adhesion Molecule 1 Protein Level Through Upregulation of Arginase Type II and Mitochondrial Oxidative Stress....
  • P., Yang, Z., and Ming, X....
  • P., Ming, X....
Université de Fribourg

Arginase-ii deficiency extends lifespan in mice

Xiong, Yuyan ; Yepuri, Gautham ; Montani, Jean-Pierre ; Ming, Xiu-Fen ; Yang, Zhihong

In: Frontiers in Physiology, 2017, vol. 8, p. -

The mitochondrial arginase type II (Arg-II) has been shown to interact with ribosomal protein S6 kinase 1 (S6K1) and mitochondrial p66Shc and to promote cell senescence, apoptosis and inflammation under pathological conditions. However, the impact of Arg-II on organismal lifespan is not known. In this study, we demonstrate a significant lifespan extension in mice with Arg-II gene deficiency...

  • ORIGINAL RESEARCH published: 08 September 2017 doi: 10.3389/fphys.2017.00682 Arginase-II Deficiency Extends Lifespan in Mice Yuyan Xiong 1 , Gautham Yepuri 1 , Jean-Pierre Montani 1, 2 , Xiu-Fen Ming 1, 2* and Zhihong Yang 1, 2* 1 Division of Physiology, Cardiovascular and Aging Research, Department of Medicine, University of Fribourg, Fribourg, Switzerland, 2 National Center of Competence in Research “Kidney.CH”, Fribourg, Switzerland Edited by: Ovidiu Constantin Baltatu, Anhembi Morumbi University, Brazil Reviewed by: Anita Coral Thomas, University of Bristol, United Kingdom Robert Lee-Young, Monash University, Australia *Correspondence: Xiu-Fen Ming xiu-fen.ming@unifr.ch Zhihong Yang zhihong.yang@unifr.ch Specialty section: This article was submitted to Integrative Physiology, a section of the journal Frontiers in Physiology Received: 12 May 2017 Accepted: 25 August 2017 Published: 08 September 2017 Citation: Xiong Y, Yepuri G, Montani J-P, Ming X-F and Yang Z (2017) Arginase-II Deficiency Extends Lifespan in Mice....
  • P., Ming, X....
  • P., Ming, X....
  • Zhihong Yang * and Xiu-Fen Ming ´ Laboratory of Vascular Biology, Department of Medicine, Division of Physiology, Faculty of Science, University of Fribourg, Rue du Musee 5, CH-1700 Fribourg, Switzerland Online publish-ahead-of-print 21 December 2010 This editorial refers to ‘A CD36-dependent pathway enhances macrophage and adipose tissue inflammation and impairs insulin signalling’ by D.J....
  • Yang Z, Ming XF....
Université de Fribourg

Arginase-II promotes tumor necrosis Factor-α release from pancreatic acinar cells causing β-cell apoptosis in aging

Xiong, Yuyan ; Yepuri, Gautham ; Necetin, Sevil ; Montani, Jean-Pierre ; Ming, Xiu-Fen ; Yang, Zhihong

In: Diabetes, 2017, vol. 66, no. 6, p. 1636–1649

Aging is associated with glucose intolerance. Arginase-II (Arg-II), the type-II L-arginine- ureahydrolase, is highly expressed in pancreas. However, its role in regulation of pancreatic β-cell function is not known. Here we show that female (not male) mice deficient in Arg-II (Arg-II−/−) are protected from age-associated glucose intolerance and reveal greater glucose induced-insulin...

  • Arginase-II Promotes Tumor Necrosis Factor-a Release From Pancreatic Acinar Cells Causing b-Cell Apoptosis in Aging Yuyan Xiong,1,2 Gautham Yepuri,1 Sevil Necetin,1 Jean-Pierre Montani,1,2 Xiu-Fen Ming,1,2 and Zhihong Yang1,2 Aging is associated with glucose intolerance....
  • Corresponding authors: Xiu-Fen Ming, xiu-fen.ming@unifr.ch, and Zhihong Yang, zhihong.yang@unifr.ch. 1 https://doc.rero.ch inflammation (25)....
  • Yang Z, Ming XF....
Université de Fribourg

Genetic targeting of arginase-ii in mouse prevents renal oxidative stress and inflammation in diet-induced obesity

Huang, Ji ; Rajapakse, Angana ; Xiong, Yuyan ; Montani, Jean-Pierre ; Verrey, François ; Ming, Xiu-Fen ; Yang, Zhihong

In: Frontiers in Physiology, 2016, vol. 7, p. -

Obesity is associated with development and progression of chronic kidney disease (CKD). Recent evidence demonstrates that enhanced levels of the L- arginine:ureahydrolase, including the two isoenzymes arginase-I (Arg-I) and arginase- II (Arg-II) in vascular endothelial cells promote uncoupling of endothelial nitric oxide synthase (eNOS), leading to increased superoxide radical anion and...

  • ORIGINAL RESEARCH published: 22 November 2016 doi: 10.3389/fphys.2016.00560 Genetic Targeting of Arginase-II in Mouse Prevents Renal Oxidative Stress and Inflammation in Diet-Induced Obesity Ji Huang 1, 2 † , Angana Rajapakse 1 † , Yuyan Xiong 1 , Jean-Pierre Montani 1, 2 , François Verrey 2, 3 , Xiu-Fen Ming 1, 2* and Zhihong Yang 1, 2* 1 Cardiovascular and Aging Research, Division of Physiology, Department of Medicine, University of Fribourg, Fribourg, Switzerland, 2 Swiss National Centre of Competence in Research (NCCR) Kidney Control of Homeostasis “Kidney.CH”, Zurich, Switzerland, 3 Institute of Physiology, University of Zurich, Zurich, Switzerland Edited by: Ovidiu Constantin Baltatu, Anhembi Morumbi University, Brazil Reviewed by: Paul Kenneth Witting, University of Sydney, Australia Charles Dudley Mills, BioMedical Consultants, USA *Correspondence: Xiu-Fen Ming xiu-fen.ming@unifr.ch Zhihong Yang zhihong.yang@unifr.ch † These authors have contributed equally to this work....
  • P., Yang, Z., and Ming, X....
  • P., Ming, X....
Université de Fribourg

Arginase: the emerging therapeutic target for vascular oxidative stress and inflammation

Yang, Zhihong ; Ming, Xiu-Fen

In: Frontiers in Inflammation, 2013, vol. 4, p. 149

Oxidative stress and inflammation in the vascular wall are essential mechanisms of atherosclerosis and vascular dysfunctions associated with risk factors such as metabolic diseases, aging, hypertension, etc. Evidence has been provided that activation of the vascular endothelial cells in the presence of the risk factors promotes oxidative stress and vascular inflammatory responses, leading to...

  • REVIEW ARTICLE published: 12 June 2013 doi: 10.3389/fimmu.2013.00149 Arginase: the emerging therapeutic target for vascular oxidative stress and inflammation Zhihong Yang* and Xiu-Fen Ming* Vascular Biology, Division of Physiology, Department of Medicine, University of Fribourg, Fribourg, Switzerland Edited by: Rudolf Lucas, Medical College of Georgia, USA Reviewed by: Rita Tostes, University of Sao Paulo, Brazil Yunchao Su, Georgia Regents University, USA *Correspondence: Zhihong Yang and Xiu-Fen Ming, Vascular Biology, Division of Physiology, Department of Medicine, Faculty of Science, University of Fribourg, Chemin du Musée 5, CH-1700 Fribourg, Switzerland e-mail: zhihong.yang@unifr.ch; xiu-fen.ming@unifr.ch Oxidative stress and inflammation in the vascular wall are essential mechanisms of atherosclerosis and vascular dysfunctions associated with risk factors such as metabolic diseases, aging, hypertension, etc....
  • Yang, Z., and Ming, X....
  • P., Ming, X....
Université de Fribourg

Positive crosstalk between arginase-II and S6K1 in vascular endothelial inflammation and aging

Yepuri, Gautham ; Velagapudi, Srividya ; Xiong, Yuyan ; Rajapakse, Angana G. ; Montani, Jean-Pierre ; Ming, Xiu-Fen ; Yang, Zhihong

In: Aging Cell, 2012, p. -

Augmented activities of both arginase and S6K1 are involved in endothelial dysfunction in aging. This study was to investigate whether or not there is a crosstalk between arginase and S6K1 in endothelial inflammation and aging in senescent human umbilical vein endothelial cells and in aging mouse models. We show increased arginase-II (Arg-II) expression/activity in senescent endothelial cells....

  • Rajapakse, Jean-Pierre Montani, Xiu-Fen Ming and Zhihong Yang Vascular Biology, Department of Medicine, Division of Physiology, University of Fribourg, Fribourg, Switzerland Summary Augmented activities of both arginase and S6K1 are involved in endothelial dysfunction in aging....
  • https://doc.rero.ch Correspondence Zhihong Yang, MD and Xiu-Fen Ming, Department of Medicine, Division of Phys´e iology, University of Fribourg, Chemin du Muse 5, CH-1700 Fribourg, Switzerland....
  • Rajapakse, Jean-Pierre Montani, Xiu-Fen Ming†, Zhihong Yang† Vascular Biology, Department of Medicine, Division of Physiology, University of Fribourg, Switzerland Supporting Information listing Supplementary figure legends Fig....
Université de Fribourg

Opposing and uncoupling effects of mTOR and S6K1 in the regulation of endothelial tissue factor expression

Ming, Xiu-Fen ; Rajapakse, Angana Gupta ; Carvas, João Miguel ; Ruffieux, Jean ; Yang, Zhihong

In: Febs Letters, 2010, vol. 58, no. 1, p. 135-140

Rapamycin has been reported to enhance tissue factor (TF) expression. The present study investigated roles of mammalian target of rapamycin (mTOR) and its downstream S6K1 in this process. We showed here that, consistent with rapamycin, knocking-down mTOR enhanced thrombin-induced TF mRNA and protein levels, whereas silencing S6K1 mitigated up-regulation of TF protein but not TF mRNA level. The...

  • Opposing and uncoupling effects of mTOR and S6K1 in the regulation of endothelial tissue factor expression Xiu-Fen Ming *, Angana Gupta Rajapakse, João Miguel Carvas, Jean Ruffieux, Zhihong Yang Division of Physiology, Department of Medicine, University of Fribourg, Switzerland https://doc.rero.ch Rapamycin has been reported to enhance tissue factor (TF) expression....
  • E-mail address: xiu-fen.ming@unifr.ch (X....
  • Ming)....
Université de Fribourg

Inhibition of S6K1 accounts partially for the anti-inflammatory effects of the arginase inhibitor L-norvaline

Ming, Xiu-Fen ; Rajapakse, Angana Gupta ; Carvas, João Miguel ; Ruffieux, Jean ; Yang, Zhihong

In: BMC Cardiovascular Disorders, 2009, vol. 9, no. 12, p. -

Background: Pharmacological inhibition of endothelial arginase-II has been shown to improve endothelial nitric oxide synthase (eNOS) function and reduce atherogenesis in animal models. We investigated whether the endothelial arginase II is involved in inflammatory responses in endothelial cells. Methods: Human endothelial cells were isolated from umbilical veins and stimulated with TNFα (10...

  • BMC Cardiovascular Disorders Research article BioMed Central Open Access Inhibition of S6K1 accounts partially for the anti-inflammatory effects of the arginase inhibitor L-norvaline Xiu-Fen Ming, Angana Gupta Rajapakse, João Miguel Carvas, Jean Ruffieux and Zhihong Yang* Address: Vascular Biology, Department of Medicine, Division of Physiology, University of Fribourg, Switzerland Email: Xiu-Fen Ming - xiu-fen.ming@unifr.ch; Angana Gupta Rajapakse - angana.rajapakse@gmail.com; João Miguel Carvas - joaomiguel.carvas@unifr.ch; Jean Ruffieux - jean.ruffieux@unifr.ch; Zhihong Yang* - zhihong.yang@unifr.ch * Corresponding author Published: 13 March 2009 BMC Cardiovascular Disorders 2009, 9:12 doi:10.1186/1471-2261-9-12 Received: 5 November 2008 Accepted: 13 March 2009 This article is available from: http://www.biomedcentral.com/1471-2261/9/12 © 2009 Ming et al; licensee BioMed Central Ltd....
  • Yang Z, Ming XF: Recent advances in understanding endothelial dysfunction in atherosclerosis....
  • Yang Z, Ming XF: Endothelial arginase: a new target in atherosclerosis....