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Chen D, Croft A, Kelly C, Haw TJ, Leong A, Sverdlov A, Ngo D. Doxorubicin-induced upregulation of follistatin-like 3 (FSTL3): a new therapeutic target. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Doxorubicin (DOX) is among the most used anticancer drugs with associated cardiotoxicity. Follistatin-like 3 (FSTL3), a secreted member of the follistatins family that can selectively bind to members of the TGF-β superfamily, is involved in regulation of cardiac hypertrophy and heart failure. FSTL3 is also upregulated in breast and colorectal cancer tumours, is also an unfavourable prognostic indicator for various cancers.
Purpose
We aim to determine the dual role of FSTL3 in prevention of DOX-induced cardiotoxicity and synergistic anti-cancer effects.
Methods
Human cardiomyocytes (HCMs) were treated with DOX at 1uM (EC50) for 72 hours. Cell viability was assessed via CellTiter-Glo®. Secreted FSTL3 levels, as measured by ELISA (R&D systems). FSTL3 and TGF-β mRNA levels were measured by qPCR. Co-treatment of DOX with human anti-FSTL3 antibodies (Aviva Systems Biology) at 10ug/mL were introduced for 72hrs treatment.
Results
Secreted FSTL3 levels were significantly increased in DOX-treated HCMs at 72hrs compared to control (n=5, p<0.001). Consistently, FSTL3 and TGF-β mRNA levels, in collected HCMs were significantly increased in DOX-treated cells. Co-treatment of DOX with human anti-FSTL3 antibodies at 10ug/mL significantly improved HCM viability compared to IgG control group. Conversely, anti-FSTL3 antibodies provided synergistic anti-cancer effects with DOX: MCF-7 breast cancer cells were significantly reduced when co-treated with DOX and anti-FSTL3 antibody vs. IgG controls.
Conclusion
We show, for the first time, that: 1) FSTL3 is secreted directly from HCMs; 2) FSTL3 levels (both circulating and mRNA) is markedly elevated with DOX treatment; 3) neutralisation of FSTL3 in DOX-treated HCMs, restored HCM viability; and 4) exhibit synergistic anti-cancer effects with DOX. Taken together, FSTL3 is a potential target for dual anti-cancer and cardioprotective effects.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Heart Foundation of Australia Future Leader FellowshipsNSW Ministry of Health EMC FellowshipNSW Ministry of Health Translational Research Grant
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Affiliation(s)
- D Chen
- University of Newcastle , Newcastle , Australia
| | - A Croft
- University of Newcastle , Newcastle , Australia
| | - C Kelly
- University of Newcastle , Newcastle , Australia
| | - T J Haw
- University of Newcastle , Newcastle , Australia
| | - A Leong
- University of Newcastle , Newcastle , Australia
| | - A Sverdlov
- University of Newcastle , Newcastle , Australia
| | - D Ngo
- University of Newcastle , Newcastle , Australia
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2
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Bai LY, Chiu CF, Kadowaki S, Robert M, Hara H, Hong M, Bergamo F, Pernot S, Cunningham D, Lin CY, Keam B, Matsumura Y, Enya K, Waxman I, Jin L, Ngo D, Drews U, Mancao C, Le Berre MA, Kato K. 1209P A phase II study of regorafenib in combination with nivolumab in patients with recurrent or metastatic solid tumors: Results of the ESCC cohort. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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3
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Croft A, Kelly C, Chen D, Murtha L, Sugito S, Boyle A, Sverdlov A, Ngo D. Mechanism(s) for Age-Related Sex Differences in Diet-Induced Cardiomyopathy: Role of RNA Methylation. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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4
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Sritharan S, Butel-Simoes L, Williams T, Schwager P, Porwal K, Reeve E, Ngo D, Sverdlov A. Initial Three Years of Running a Cardio-Oncology Service in Australia. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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5
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Chen D, Untaru R, Liu S, Assadi-Khansari B, Croft A, Kelly C, Ajaero C, Chua SJ, Boyle AJ, Horowitz JD, Ngo D, Sverdlov A. Follistatin-like 3 (FSTL3) levels are increased in acute heart failure patients. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Follistatin-like 3 (FSTL3) is a secreted protein that has been suggested to play an important role in modulating cardiac remodeling and hypertrophy. In this study, we aim to determine whether: 1) FSTL3 is incrementally elevated in patients with HF vs those with other cardiovascular disease (CVD); and 2) increased FSTL3 is associated with 2 or more hospital admissions due to major adverse CV events (MACE) within 1 year.
Methods and results
We measured circulating levels of FSTL3 using commercially available ELISA (R&D systems) in a total of n=696 patients. FSTL3 levels were compared between: 1) healthy-aging volunteers with no prior major CVD (n=267, age 67±6 years) and 2) patients admitted to cardiology unit for various CVD (n=429, age 66±14 years); among those (n=178, age 68±13 years) had HF. Patients with HF had 2-fold higher FSTL3 levels vs healthy age-matched controls vs those with other CVD (p<0.001). Occurrences of MACE were recorded up to 1 year for patients admitted to cardiology unit. On univariate analyses, patient with 2 or more MACE within 1 year (n=91, 27%) had significant elevated FSTL3 levels (P=0.003), is associated with older age (P<0.005). On multivariate analysis, high FSTL3 levels (P=0.034) is an independent predictor of 2 or more MACE admissions within 1 year after adjusting for age, clinical comorbidities and medications.
Conclusions
FSTL3 is incrementally increased in patients with HF and is associated with poorer prognosis. Elevated FSTL3 levels is associated with increased risks of cardiac hospital readmissions for patients with multiple CV morbidities.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): NSW Ministry of Health EMC Fellowship (Australia)
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Affiliation(s)
- D Chen
- University of Newcastle, Cardiovascular health and cardio-oncology, Newcastle, Australia
| | - R Untaru
- University of Newcastle, Cardiovascular health and cardio-oncology, Newcastle, Australia
| | - S Liu
- University of Adelaide, Cardiology, Adelaide, Australia
| | | | - A Croft
- University of Newcastle, Cardiovascular health and cardio-oncology, Newcastle, Australia
| | - C Kelly
- University of Newcastle, Cardiovascular health and cardio-oncology, Newcastle, Australia
| | - C Ajaero
- University of Adelaide, Cardiology, Adelaide, Australia
| | - S J Chua
- University of Adelaide, Cardiology, Adelaide, Australia
| | - A J Boyle
- John Hunter Hospital, Newcastle, Australia
| | - J D Horowitz
- University of Adelaide, Cardiology, Adelaide, Australia
| | - D Ngo
- University of Newcastle, Cardiovascular health and cardio-oncology, Newcastle, Australia
| | - A Sverdlov
- John Hunter Hospital, Newcastle, Australia
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Chen D, Untaru R, Liu S, Assafi-Khansari B, Croft A, Kelly C, Ajaero C, Boyle A, Horowitz J, Ngo D, Sverdlov A. Follistatin-like 3 (FSTL3) Levels in Patients With Cardiovascular Disease. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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7
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Ng S, Chia S, Croft A, Untaru R, Kelly C, Chen D, Collins N, Sverdlov A, Ngo D. Growth Differentiation Factor 11 is Increased in Patients with Pulmonary Hypertension. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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8
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Croft A, Kelly C, Chen D, Murtha L, Sugito S, Boyle A, Sverdlov A, Ngo D. Adipose-Targeted Overexpression of Mitochondrial-Targeted Catalase Does Not Improve Cardio-Metabolic Parameters in Mice With Diet-Induced Obesity. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Kelly C, Croft A, Chen D, Ngo D, Sverdlov A. Effects of IgG1 Injection in a Mouse Model of Diet Induced Cardiometabolic Function. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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10
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Chia S, Ng S, Croft A, Park C, Morten M, Sverdlov A, Ngo D. Effects of Beetroot Juice Supplementation on Inflammation and Antioxidant Levels in Obese Subjects. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Cho SX, Rudloff I, Lao JC, Pang MA, Goldberg R, Bui CB, McLean CA, Stock M, Klassert TE, Slevogt H, Mangan NE, Cheng W, Fischer D, Gfroerer S, Sandhu MK, Ngo D, Bujotzek A, Lariviere L, Schumacher F, Tiefenthaler G, Beker F, Collins C, Kamlin COF, König K, Malhotra A, Tan K, Theda C, Veldman A, Ellisdon AM, Whisstock JC, Berger PJ, Nold-Petry CA, Nold MF. Characterization of the pathoimmunology of necrotizing enterocolitis reveals novel therapeutic opportunities. Nat Commun 2020; 11:5794. [PMID: 33188181 PMCID: PMC7666196 DOI: 10.1038/s41467-020-19400-w] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 10/14/2020] [Indexed: 12/17/2022] Open
Abstract
Necrotizing enterocolitis (NEC) is a severe, currently untreatable intestinal disease that predominantly affects preterm infants and is driven by poorly characterized inflammatory pathways. Here, human and murine NEC intestines exhibit an unexpected predominance of type 3/TH17 polarization. In murine NEC, pro-inflammatory type 3 NKp46−RORγt+Tbet+ innate lymphoid cells (ILC3) are 5-fold increased, whereas ILC1 and protective NKp46+RORγt+ ILC3 are obliterated. Both species exhibit dysregulation of intestinal TLR repertoires, with TLR4 and TLR8 increased, but TLR5-7 and TLR9-12 reduced. Transgenic IL-37 effectively protects mice from intestinal injury and mortality, whilst exogenous IL-37 is only modestly efficacious. Mechanistically, IL-37 favorably modulates immune homeostasis, TLR repertoires and microbial diversity. Moreover, IL-37 and its receptor IL-1R8 are reduced in human NEC epithelia, and IL-37 is lower in blood monocytes from infants with NEC and/or lower birthweight. Our results on NEC pathomechanisms thus implicate type 3 cytokines, TLRs and IL-37 as potential targets for novel NEC therapies. Necrotizing Enterocolitis (NEC) is an untreatable intestinal disease in infants. Here the authors show that human and experimental mouse NEC is associated with altered toll-like receptor expression in the intestine, enhanced Th17/type 3 polarization in adaptive immune and innate lymphoid cells, dysregulated microbiota, and reduced interleukin-37 signaling.
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Affiliation(s)
- Steven X Cho
- Department of Paediatrics, Monash University, Melbourne, VIC, Australia.,Ritchie Centre, Hudson Institute of Medical Research, Melbourne, VIC, Australia.,Department of Immunology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Ina Rudloff
- Department of Paediatrics, Monash University, Melbourne, VIC, Australia.,Ritchie Centre, Hudson Institute of Medical Research, Melbourne, VIC, Australia
| | - Jason C Lao
- Department of Paediatrics, Monash University, Melbourne, VIC, Australia.,Ritchie Centre, Hudson Institute of Medical Research, Melbourne, VIC, Australia
| | - Merrin A Pang
- Department of Paediatrics, Monash University, Melbourne, VIC, Australia.,Ritchie Centre, Hudson Institute of Medical Research, Melbourne, VIC, Australia
| | - Rimma Goldberg
- Department of Paediatrics, Monash University, Melbourne, VIC, Australia.,Ritchie Centre, Hudson Institute of Medical Research, Melbourne, VIC, Australia.,Department of Medicine, Monash University, Melbourne, VIC, Australia.,Department of Gastroenterology, Monash Health, Melbourne, VIC, Australia
| | - Christine B Bui
- Department of Paediatrics, Monash University, Melbourne, VIC, Australia.,Ritchie Centre, Hudson Institute of Medical Research, Melbourne, VIC, Australia
| | - Catriona A McLean
- Department of Anatomical Pathology, Alfred Hospital, Melbourne, VIC, Australia.,Central Clinical School, Monash University, Melbourne, VIC, Australia
| | | | | | | | - Niamh E Mangan
- Department of Molecular and Translational Science, Monash University, Melbourne, VIC, Australia.,Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Melbourne, VIC, Australia
| | - Wei Cheng
- Department of Surgery, Beijing United Family Hospital, Beijing, China.,Capital Institute of Pediatrics, Beijing, China
| | - Doris Fischer
- Department of Pediatrics, Goethe University Hospital, Frankfurt, Germany.,Department of Pediatrics, St. Vincenz Hospital, Limburg, Germany
| | - Stefan Gfroerer
- Department of Pediatric Surgery, Goethe University Hospital, Frankfurt, Germany.,Helios Clinic Berlin-Buch, Berlin, Germany
| | - Manjeet K Sandhu
- Department of Paediatrics, Monash University, Melbourne, VIC, Australia.,Ritchie Centre, Hudson Institute of Medical Research, Melbourne, VIC, Australia.,Department of Gastroenterology, Monash Health, Melbourne, VIC, Australia
| | - Devi Ngo
- Department of Paediatrics, Monash University, Melbourne, VIC, Australia.,Ritchie Centre, Hudson Institute of Medical Research, Melbourne, VIC, Australia
| | - Alexander Bujotzek
- Roche Pharma Research and Early Development, Roche Innovation Center Munich, Penzberg, Germany
| | - Laurent Lariviere
- Roche Pharma Research and Early Development, Roche Innovation Center Munich, Penzberg, Germany
| | - Felix Schumacher
- Roche Pharma Research and Early Development, Roche Innovation Center Munich, Penzberg, Germany
| | - Georg Tiefenthaler
- Roche Pharma Research and Early Development, Roche Innovation Center Munich, Penzberg, Germany
| | - Friederike Beker
- Mater Research Institute, University of Queensland, Brisbane, QLD, Australia.,Neonatal Services, Mercy Hospital for Women, Melbourne, VIC, Australia
| | - Clare Collins
- Neonatal Services, Mercy Hospital for Women, Melbourne, VIC, Australia.,Joan Kirner Women's & Children's, Sunshine Hospital, Melbourne, VIC, Australia
| | - C Omar F Kamlin
- Department of Newborn Research, Royal Women's Hospital, Melbourne, VIC, Australia.,University of Melbourne, Melbourne, VIC, Australia.,Murdoch Children's Research Institute, Melbourne, VIC, Australia
| | - Kai König
- Medicum Wesemlin, Department of Paediatrics, Lucerne, Switzerland
| | - Atul Malhotra
- Department of Paediatrics, Monash University, Melbourne, VIC, Australia.,Ritchie Centre, Hudson Institute of Medical Research, Melbourne, VIC, Australia.,Monash Newborn, Monash Children's Hospital, Melbourne, VIC, Australia
| | - Kenneth Tan
- Department of Paediatrics, Monash University, Melbourne, VIC, Australia.,Ritchie Centre, Hudson Institute of Medical Research, Melbourne, VIC, Australia.,Monash Newborn, Monash Children's Hospital, Melbourne, VIC, Australia
| | - Christiane Theda
- Department of Newborn Research, Royal Women's Hospital, Melbourne, VIC, Australia.,University of Melbourne, Melbourne, VIC, Australia.,Murdoch Children's Research Institute, Melbourne, VIC, Australia
| | - Alex Veldman
- Ritchie Centre, Hudson Institute of Medical Research, Melbourne, VIC, Australia.,Department of Pediatrics, St. Vincenz Hospital, Limburg, Germany.,Department of Pediatrics, Liebig University Hospital, Giessen, Germany
| | - Andrew M Ellisdon
- Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, Monash University, Melbourne, VIC, Australia
| | - James C Whisstock
- Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, Monash University, Melbourne, VIC, Australia.,Australian Research Council Centre of Excellence in Advanced Molecular Imaging, Monash University, Melbourne, VIC, Australia
| | - Philip J Berger
- Department of Paediatrics, Monash University, Melbourne, VIC, Australia.,Ritchie Centre, Hudson Institute of Medical Research, Melbourne, VIC, Australia
| | - Claudia A Nold-Petry
- Department of Paediatrics, Monash University, Melbourne, VIC, Australia.,Ritchie Centre, Hudson Institute of Medical Research, Melbourne, VIC, Australia
| | - Marcel F Nold
- Department of Paediatrics, Monash University, Melbourne, VIC, Australia. .,Ritchie Centre, Hudson Institute of Medical Research, Melbourne, VIC, Australia. .,Monash Newborn, Monash Children's Hospital, Melbourne, VIC, Australia.
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Mcivor D, Willams T, Mcgee M, Boyle A, Ngo D, Sverdlov A. 089 Can Case Conferencing Between Cardiologists and GP’s Improve Guideline-Based Care for Patients with Heart Failure? Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Kelly C, Nesbitt A, Croft A, Senanayake T, Simoes L, Mabotuwana N, Boyle A, Ngo D, Sverdlov A. Low Expression of Secreted Frizzled Receptor Protein 5 (Sfrp5) in Human Right Atrial Appendage is Associated with Diastolic Dysfunction. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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14
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Untaru R, Nesbitt A, Kelly C, Croft A, Chen D, Assadi-Khansari B, Collins N, Boyle A, Leitch J, Baker D, Sugito S, May A, Sverdlov A, Ngo D. Suboptimal Use of Cardioprotective Drugs in Patients with a History of Cancer. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Nesbitt A, Kelly C, Croft A, Chen D, Sverdlov A, Ngo D. Neutralisation of the Anti-Angiogenic Isoform of Vascular Endothelial Growth Factor-A: VEGF-A165b is Associated with Weight Gain Independent of High Fat/High Sucrose Feeding. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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16
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Croft A, Senanayake T, Butel-Simões L, Mabotuwana N, Boyle A, Sverdlov A, Ngo D. Anti-Angiogenic Vascular Endothelial Growth Factor-A Isoform: VEGF-A165b is Present in Human Right Atrial Appendage, but is not Altered in Diabetes. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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17
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Louis C, Ngo D, D'Silva DB, Hansen J, Phillipson L, Jousset H, Novello P, Segal D, Lawlor KE, Burns CJ, Wicks IP. Therapeutic Effects of a
TANK
‐Binding Kinase 1 Inhibitor in Germinal Center–Driven Collagen‐Induced Arthritis. Arthritis Rheumatol 2018; 71:50-62. [DOI: 10.1002/art.40670] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 07/12/2018] [Indexed: 12/21/2022]
Affiliation(s)
- Cynthia Louis
- The Walter and Eliza Hall Institute of Medical Research and the University of Melbourne Parkville Victoria Australia
| | - Devi Ngo
- The Walter and Eliza Hall Institute of Medical Research and the University of Melbourne Parkville Victoria Australia
| | - Damian B. D'Silva
- The Walter and Eliza Hall Institute of Medical Research and the University of Melbourne Parkville Victoria Australia
| | - Jacinta Hansen
- The Walter and Eliza Hall Institute of Medical Research and the University of Melbourne Parkville Victoria Australia
| | - Louisa Phillipson
- The Walter and Eliza Hall Institute of Medical Research and the University of Melbourne Parkville Victoria Australia
| | - Helene Jousset
- The Walter and Eliza Hall Institute of Medical Research and the University of Melbourne Parkville Victoria Australia
| | - Patrizia Novello
- The Walter and Eliza Hall Institute of Medical Research and the University of Melbourne Parkville Victoria Australia
| | - David Segal
- The Walter and Eliza Hall Institute of Medical Research and the University of Melbourne Parkville Victoria Australia
| | - Kate E. Lawlor
- The Walter and Eliza Hall Institute of Medical Research and the University of Melbourne Parkville Victoria Australia
| | - Christopher J. Burns
- The Walter and Eliza Hall Institute of Medical Research, the University of Melbourne and the Bio21 Institute Parkville Victoria Australia
| | - Ian P. Wicks
- The Walter and Eliza Hall Institute of Medical Research, the University of Melbourne and Royal Melbourne Hospital Parkville Victoria Australia
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Dragoljevic D, Kraakman MJ, Nagareddy PR, Ngo D, Shihata W, Kammoun HL, Whillas A, Lee MKS, Al-Sharea A, Pernes G, Flynn MC, Lancaster GI, Febbraio MA, Chin-Dusting J, Hanaoka BY, Wicks IP, Murphy AJ. Defective cholesterol metabolism in haematopoietic stem cells promotes monocyte-driven atherosclerosis in rheumatoid arthritis. Eur Heart J 2018; 39:2158-2167. [PMID: 29905812 PMCID: PMC6001889 DOI: 10.1093/eurheartj/ehy119] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 12/20/2017] [Accepted: 03/03/2018] [Indexed: 12/26/2022] Open
Abstract
Aim Rheumatoid arthritis (RA) is associated with an approximately two-fold elevated risk of cardiovascular (CV)-related mortality. Patients with RA present with systemic inflammation including raised circulating myeloid cells, but fail to display traditional CV risk-factors, particularly dyslipidaemia. We aimed to explore if increased circulating myeloid cells is associated with impaired atherosclerotic lesion regression or altered progression in RA. Methods and results Using flow cytometry, we noted prominent monocytosis, neutrophilia, and thrombocytosis in two mouse models of RA. This was due to enhanced proliferation of the haematopoietic stem and progenitor cells (HSPCs) in the bone marrow and the spleen. HSPCs expansion was associated with an increase in the cholesterol content, due to a down-regulation of cholesterol efflux genes, Apoe, Abca1, and Abcg1. The HSPCs also had enhanced expression of key myeloid promoting growth factor receptors. Systemic inflammation was found to cause defective cellular cholesterol metabolism. Increased myeloid cells in mice with RA were associated with a significant impairment in lesion regression, even though cholesterol levels were equivalent to non-arthritic mice. Lesions from arthritic mice exhibited a less stable phenotype as demonstrated by increased immune cell infiltration, lipid accumulation, and decreased collagen formation. In a progression model, we noted monocytosis, enhanced monocytes recruitment to lesions, and increased plaque macrophages. This was reversed with administration of reconstituted high-density lipoprotein (rHDL). Furthermore, RA patients have expanded CD16+ monocyte subsets and a down-regulation of ABCA1 and ABCG1. Conclusion Rheumatoid arthritis impairs atherosclerotic regression and alters progression, which is associated with an expansion of myeloid cells and disturbed cellular cholesterol handling, independent of plasma cholesterol levels. Infusion of rHDL prevented enhanced myelopoiesis and monocyte entry into lesions. Targeting cellular cholesterol defects in people with RA, even if plasma cholesterol is within the normal range, may limit vascular disease.
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Affiliation(s)
- Dragana Dragoljevic
- Haematopoiesis and Leukocyte Biology Laboratory, Division of Immunometabolism, Baker Heart and Diabetes Institute, 75 Commercial Rd, 3004 Melbourne, Victoria, Australia
- Department of Immunology, Monash University, 89 Commercial Road, 3004 Melbourne, Victoria, Australia
| | - Michael J Kraakman
- Haematopoiesis and Leukocyte Biology Laboratory, Division of Immunometabolism, Baker Heart and Diabetes Institute, 75 Commercial Rd, 3004 Melbourne, Victoria, Australia
- Human Nutrition, Naomi Berrie Diabetes Centre, Columbia University, New York, 1150 St Nicholas Ave, 10032 NY, USA
| | - Prabhakara R Nagareddy
- Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham, 1720 2nd Ave South, 35294 AL, USA
| | - Devi Ngo
- Inflammation Division, Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, 3052 Melbourne, Victoria, Australia
| | - Waled Shihata
- Haematopoiesis and Leukocyte Biology Laboratory, Division of Immunometabolism, Baker Heart and Diabetes Institute, 75 Commercial Rd, 3004 Melbourne, Victoria, Australia
- Department of Pharmacology, Monash University, Wellington Road, 3800 Clayton, Victoria, Australia
| | - Helene L Kammoun
- Haematopoiesis and Leukocyte Biology Laboratory, Division of Immunometabolism, Baker Heart and Diabetes Institute, 75 Commercial Rd, 3004 Melbourne, Victoria, Australia
- Department of Immunology, Monash University, 89 Commercial Road, 3004 Melbourne, Victoria, Australia
| | - Alexandra Whillas
- Haematopoiesis and Leukocyte Biology Laboratory, Division of Immunometabolism, Baker Heart and Diabetes Institute, 75 Commercial Rd, 3004 Melbourne, Victoria, Australia
| | - Man Kit Sam Lee
- Haematopoiesis and Leukocyte Biology Laboratory, Division of Immunometabolism, Baker Heart and Diabetes Institute, 75 Commercial Rd, 3004 Melbourne, Victoria, Australia
- Department of Immunology, Monash University, 89 Commercial Road, 3004 Melbourne, Victoria, Australia
| | - Annas Al-Sharea
- Haematopoiesis and Leukocyte Biology Laboratory, Division of Immunometabolism, Baker Heart and Diabetes Institute, 75 Commercial Rd, 3004 Melbourne, Victoria, Australia
- Department of Immunology, Monash University, 89 Commercial Road, 3004 Melbourne, Victoria, Australia
| | - Gerard Pernes
- Haematopoiesis and Leukocyte Biology Laboratory, Division of Immunometabolism, Baker Heart and Diabetes Institute, 75 Commercial Rd, 3004 Melbourne, Victoria, Australia
- Department of Immunology, Monash University, 89 Commercial Road, 3004 Melbourne, Victoria, Australia
| | - Michelle C Flynn
- Haematopoiesis and Leukocyte Biology Laboratory, Division of Immunometabolism, Baker Heart and Diabetes Institute, 75 Commercial Rd, 3004 Melbourne, Victoria, Australia
- Department of Immunology, Monash University, 89 Commercial Road, 3004 Melbourne, Victoria, Australia
| | - Graeme I Lancaster
- Haematopoiesis and Leukocyte Biology Laboratory, Division of Immunometabolism, Baker Heart and Diabetes Institute, 75 Commercial Rd, 3004 Melbourne, Victoria, Australia
- Department of Immunology, Monash University, 89 Commercial Road, 3004 Melbourne, Victoria, Australia
| | - Mark A Febbraio
- Cellular and Molecular Metabolism, Division of Diabetes & Metabolism, Garvan Institute of Medical Research, 384 Victoria Street, Darlinghurst, 2010 Sydney, New South Wales, Australia
| | - Jaye Chin-Dusting
- Department of Pharmacology, Monash University, Wellington Road, 3800 Clayton, Victoria, Australia
| | - Beatriz Y Hanaoka
- Department of Medicine, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, 1720 2nd Ave South, 35294 AL, USA
| | - Ian P Wicks
- Inflammation Division, Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, 3052 Melbourne, Victoria, Australia
- Rheumatology Unit, Royal Melbourne Hospital, 300 Grattan St, 3050 Melbourne, Victoria, Australia
| | - Andrew J Murphy
- Haematopoiesis and Leukocyte Biology Laboratory, Division of Immunometabolism, Baker Heart and Diabetes Institute, 75 Commercial Rd, 3004 Melbourne, Victoria, Australia
- Department of Immunology, Monash University, 89 Commercial Road, 3004 Melbourne, Victoria, Australia
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Rubin V, Ngo D, Butler D, Ross A, Balaram N. 5.4-O4The potential of disaggregation of data about racial and ethnic subgroups to improve the health of immigrants and communities of color in the US. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky047.180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
| | - D Ngo
- Policylink, United States
| | | | - A Ross
- Policylink, United States
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Morten M, Senanayake T, Butel-Simões L, Mabotuwana N, Boyle A, Ngo D, Sverdlov A. Expression of Follistatin-Like 3 is not Altered in the Right Atrial Appendage in Patients with Myocardial Infarction. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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21
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Chen D, Liu S, Horowitz J, Sverdlov A, Ngo D. Follistatin-like 3 Release Occurs Synchronously With Onset of Doxorubicin-Induced Cardiotoxicity in an Isolated Myocardial Cell Model. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Luz-Crawford P, Espinosa-Carrasco G, Ipseiz N, Contreras R, Tejedor G, Medina DA, Vega-Letter AM, Ngo D, Morand EF, Pène J, Hernandez J, Jorgensen C, Djouad F. Gilz-Activin A as a Novel Signaling Axis Orchestrating Mesenchymal Stem Cell and Th17 Cell Interplay. Am J Cancer Res 2018; 8:846-859. [PMID: 29344311 PMCID: PMC5771098 DOI: 10.7150/thno.21793] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 11/09/2017] [Indexed: 01/01/2023] Open
Abstract
Mesenchymal stem cells (MSC) are highly immunosuppressive cells able to reduce chronic inflammation through the active release of mediators. Recently, we showed that glucocorticoid-induced leucine zipper (Gilz) expression by MSC is involved in their therapeutic effect by promoting the generation of regulatory T cells. However, the mechanisms underlying this pivotal role of Gilz remain elusive. Methods and Results In this study, we have uncovered evidence that Gilz modulates the phenotype and function of Th1 and Th17 cells likely by upregulating the level of Activin A and NO2 secreted by MSC. Adoptive transfer experiments sustained this Gilz-dependent suppressive effect of MSC on Th1 and Th17 cell functions. In immunoregulatory MSC, obtained by priming with IFN-γ and TNF-α, Gilz was translocated to the nucleus and bound to the promoters of inos and Activin βA to induce their expression. The increased expression of Activin A directly impacted on Th17 cells fate by repressing their differentiation program through the activation of Smad3/2 and enhancing IL-10 production. Conclusion Our results reveal how Gilz controls inos and Activin βA gene expression to ultimately assign immunoregulatory status to MSC able to repress the pathogenic Th17 cell differentiation program and uncover Activin A as a novel mediator of MSC in this process.
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Ellisdon AM, Nold-Petry CA, D’Andrea L, Cho SX, Lao JC, Rudloff I, Ngo D, Lo CY, Soares da Costa TP, Perugini MA, Conroy PJ, Whisstock JC, Nold MF. Homodimerization attenuates the anti-inflammatory activity of interleukin-37. Sci Immunol 2017; 2:2/8/eaaj1548. [DOI: 10.1126/sciimmunol.aaj1548] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Revised: 11/29/2016] [Accepted: 01/19/2017] [Indexed: 12/14/2022]
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24
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Chu M, Chua S, Assadi-Khansari B, Amarasekera A, Horowitz J, Sverdlov A, Ngo D. Circulating Secreted Frizzled-Related Protein 5 (Sfrp5) is Decreased in Patients with Diabetes and is Associated with Diabetic Control. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Chua S, Goh V, Assadi-Khansari B, Chen D, Hii J, Horowitz J, Sverdlov A, Ngo D. Follistatin-like 3 is Elevated in Patients with Atrial Fibrillation but is Unchanged Following Ablative Therapy. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Rudloff I, Cho SX, Lao JC, Ngo D, McKenzie M, Nold-Petry CA, Nold MF. Monocytes and dendritic cells are the primary sources of interleukin 37 in human immune cells. J Leukoc Biol 2016; 101:901-911. [DOI: 10.1189/jlb.3ma0616-287r] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 10/13/2016] [Accepted: 11/08/2016] [Indexed: 11/24/2022] Open
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Assadi-Khansari B, Chua S, Chapman M, Ali O, Nguyen H, Horowitz J, Sverdlov A, Ngo D. Follistatin-like 3 Predicts Aortic Root Enlargement in Patients with Bicuspid Aortic Valve. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Assadi-Khansari B, Chua S, Horowitz J, Sverdlov A, Ngo D. Follistatin-like 3 Is Associated with Increased Left Ventricular Mass in an Ageing Population. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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29
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Chen D, Procter N, Goh V, Liu S, Chua S, Assadi-Khansari B, Horowitz J, Sverdlov A, Ngo D. New Onset Atrial Fibrillation Is Associated with Elevated Galactic-3 Levels. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Chua S, Ajaero C, Assadi-Khansari B, Horowitz J, Sverdlov A, Ngo D. Galectin 3 Predicts Functional Capacity in Patients with Severe Congestive Heart Failure (CHF). Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Chua S, Assadi-Khansari B, Horowitz J, Sverdlov A, Ngo D. Galectin-3 Levels Is not a Predictor of Increased Left Ventricular Mass in a Healthy Ageing Population. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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32
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De Leon J, Rivest-Henault D, Keats S, Jameson M, Rai R, Arumugam S, Wilton L, Ngo D, Martin J, Sidhom M, Holloway L. PV-0328: Rectal immobilisation device in stereotactic prostate treatment: intrafraction motion and dosimetry. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)31577-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Dragoljevic D, Kraakman MJ, Ngo D, Whillas A, van Doornum S, Wicks I, Febbraio MA, Chin-Dusting JP, Murphy AJ. Abstract 46: Cellular Cholesterol Homeostasis is Altered in Murine Models of Rheumatoid Arthritis and is Linked to Enhanced Myelopoiesis. Arterioscler Thromb Vasc Biol 2015. [DOI: 10.1161/atvb.35.suppl_1.46] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Rheumatoid arthritis (RA) is associated with a ~2-fold elevated risk of morbidity and mortality from atherosclerotic cardiovascular disease (CVD) compared with the general population. Atherosclerosis in RA patients tends to be more aggressive and therefore more challenging to treat. Identifying CVD in these patients is difficult as traditional CVD risk factors, such as changes in plasma lipid profiles (i.e. elevated LDL, decreased HDL) are not always observed, underscoring the need for better understanding of the reasons contributing to the enhanced atherosclerosis in RA patients. People with RA often have monocytosis and neutrophilia, which we hypothesize to plays causal roles in atherosclerosis. Two mouse models of RA were used, K/BxN serum transfer and collagen induced arthritis (CIA). Flow cytometry was used to quantify the abundance of leukocyte and stem cell subsets. BODIPY-cholesterol was employed to determine the membrane cholesterol status of the various cells. Prominent monocytosis and neutrophilia due to an expansion and increased proliferation of the haematopoietic stem and multipotential progenitor cells (HSPCs) in the bone marrow (BM) was observed in both models of RA. There was also an increase in the mobilisation of HSPCs into the circulation, which homed to the spleen, resulting in extramedullary haematopoiesis. Interestingly, key cholesterol efflux genes, Abca1, Abcg1 and Apoe were down regulated in the BM HSPCs isolated from the K/BxN mice, resulting in increased cell membrane cholesterol levels. We also observed an increase in the expression of the common beta subunit of the interlukin-3 receptor on the HSPCs and the M-CSF receptor in myeloid progenitor cells, likely explaining their increased proliferation and skewing to the myeloid lineage. Moreover, blood monocytes and neutrophils had increased membrane cholesterol content, independent of changes in plasma cholesterol levels. These data suggest that while plasma cholesterol levels may not be increased in RA, cellular cholesterol homeostasis might be increased. We hypothesize that this, together with enhanced monocyte production, underlies the increased risk of CVD in RA.
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Affiliation(s)
- Dragana Dragoljevic
- Vascular Biology, Baker IDI Heart and Diabetes Institute, Melbourne, Australia
| | - Michael J Kraakman
- Vascular Biology, Baker IDI Heart and Diabetes Institute, Melbourne, Australia
| | - Devi Ngo
- Inflammation, Walter and Eliza Hall Institute of Med Rsch, Parkville, Australia
| | - Alexandra Whillas
- Vascular Biology, Baker IDI Heart and Diabetes Institute, Melbourne, Australia
| | | | - Ian Wicks
- Inflammation, Walter and Eliza Hall Institute of Med Rsch, Parkville, Australia
| | - Mark A Febbraio
- Vascular Biology, Baker IDI Heart and Diabetes Institute, Melbourne, Australia
| | - Jaye P Chin-Dusting
- Vascular Biology, Baker IDI Heart and Diabetes Institute, Melbourne, Australia
| | - Andrew J Murphy
- Vascular Biology, Baker IDI Heart and Diabetes Institute, Melbourne, Australia
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Gu R, Santos LL, Ngo D, Fan H, Singh PP, Fingerle-Rowson G, Bucala R, Xu J, Quinn JMW, Morand EF. Macrophage migration inhibitory factor is essential for osteoclastogenic mechanisms in vitro and in vivo mouse model of arthritis. Cytokine 2015; 72:135-45. [PMID: 25647268 DOI: 10.1016/j.cyto.2014.11.015] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Revised: 10/27/2014] [Accepted: 11/16/2014] [Indexed: 01/21/2023]
Abstract
Macrophage migration inhibitory factor (MIF) enhances activation of leukocytes, endothelial cells and fibroblast-like synoviocytes (FLS), thereby contributing to the pathogenesis of rheumatoid arthritis (RA). A MIF promoter polymorphism in RA patients resulted in higher serum MIF concentration and worsens bone erosion; controversially current literature reported an inhibitory role of MIF in osteoclast formation. The controversial suggested that the precise role of MIF and its putative receptor CD74 in osteoclastogenesis and RA bone erosion, mediated by locally formed osteoclasts in response to receptor activator of NF-κB ligand (RANKL), is unclear. We reported that in an in vivo K/BxN serum transfer arthritis, reduced clinical and histological arthritis in MIF(-/-) and CD74(-/-) mice were accompanied by a virtual absence of osteoclasts at the synovium-bone interface and reduced osteoclast-related gene expression. Furthermore, in vitro osteoclast formation and osteoclast-related gene expression were significantly reduced in MIF(-/-) cells via decreasing RANKL-induced phosphorylation of NF-κB-p65 and ERK1/2. This was supported by a similar reduction of osteoclastogenesis observed in CD74(-/-) cells. Furthermore, a MIF blockade reduced RANKL-induced osteoclastogenesis via deregulating RANKL-mediated NF-κB and NFATc1 transcription factor activation. These data indicate that MIF and CD74 facilitate RANKL-induced osteoclastogenesis, and suggest that MIF contributes directly to bone erosion, as well as inflammation, in RA.
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Affiliation(s)
- Ran Gu
- Centre for Inflammatory Disease, Monash University, Clayton, Australia
| | - Leilani L Santos
- Centre for Inflammatory Disease, Monash University, Clayton, Australia
| | - Devi Ngo
- Centre for Inflammatory Disease, Monash University, Clayton, Australia
| | - HuaPeng Fan
- Centre for Inflammatory Disease, Monash University, Clayton, Australia
| | | | | | - Richard Bucala
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06511, USA
| | - Jiake Xu
- School of Pathology and Laboratory Medicine, The University of Western Australia, Crawley, Australia
| | - Julian M W Quinn
- Prince Henry's Institute, Clayton, Australia; Dept of Biochemistry and Molecular Biology, Monash University, Clayton, Australia
| | - Eric F Morand
- Centre for Inflammatory Disease, Monash University, Clayton, Australia.
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Sebastiani P, Farrell JJ, Alsultan A, Wang S, Edward HL, Shappell H, Bae H, Milton JN, Baldwin CT, Al-Rubaish AM, Naserullah Z, Al-Muhanna F, Alsuliman A, Patra PK, Farrer LA, Ngo D, Vathipadiekal V, Chui DHK, Al-Ali AK, Steinberg MH. BCL11A enhancer haplotypes and fetal hemoglobin in sickle cell anemia. Blood Cells Mol Dis 2015; 54:224-30. [PMID: 25703683 DOI: 10.1016/j.bcmd.2015.01.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Accepted: 01/07/2015] [Indexed: 02/04/2023]
Abstract
BACKGROUND Fetal hemoglobin (HbF) levels in sickle cell anemia patients vary. We genotyped polymorphisms in the erythroid-specific enhancer of BCL11A to see if they might account for the very high HbF associated with the Arab-Indian (AI) haplotype and Benin haplotype of sickle cell anemia. METHODS AND RESULTS Six BCL112A enhancer SNPs and their haplotypes were studied in Saudi Arabs from the Eastern Province and Indian patients with AI haplotype (HbF ~20%), African Americans (HbF ~7%), and Saudi Arabs from the Southwestern Province (HbF ~12%). Four SNPs (rs1427407, rs6706648, rs6738440, and rs7606173) and their haplotypes were consistently associated with HbF levels. The distributions of haplotypes differ in the 3 cohorts but not their genetic effects: the haplotype TCAG was associated with the lowest HbF level and the haplotype GTAC was associated with the highest HbF level and differences in HbF levels between carriers of these haplotypes in all cohorts were approximately 6%. CONCLUSIONS Common HbF BCL11A enhancer haplotypes in patients with African origin and AI sickle cell anemia have similar effects on HbF but they do not explain their differences in HbF.
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Affiliation(s)
- P Sebastiani
- Department of Biostatistics, Boston University School of Public Health, Boston, MA, United States.
| | - J J Farrell
- Department of Medicine, Boston University School of Medicine, Boston, MA, United States
| | - A Alsultan
- Sickle Cell Disease Research Center and Department of Pediatrics, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - S Wang
- Department of Biostatistics, Boston University School of Public Health, Boston, MA, United States
| | - H L Edward
- Department of Medicine, Boston University School of Medicine, Boston, MA, United States
| | - H Shappell
- Department of Biostatistics, Boston University School of Public Health, Boston, MA, United States
| | - H Bae
- College of Public Health and Human Sciences, Oregon State University, Corvallis, OR, United States
| | - J N Milton
- Department of Biostatistics, Boston University School of Public Health, Boston, MA, United States
| | - C T Baldwin
- Department of Medicine, Boston University School of Medicine, Boston, MA, United States
| | - A M Al-Rubaish
- Department of Internal Medicine, College of Medicine, University of Dammam, Dammam, Saudi Arabia
| | - Z Naserullah
- Department of Pediatrics, Maternity & Child Hospital, Dammam, Saudi Arabia
| | - F Al-Muhanna
- Department of Internal Medicine, College of Medicine, University of Dammam, Dammam, Saudi Arabia
| | - A Alsuliman
- Department of Hematology, King Fahd Hospital, Hafof, Al-Ahsa, Saudi Arabia
| | - P K Patra
- Deptartment of Biochemistry, Pt. J.N.M. Medical College, Raipur, Chattisgarh, India
| | - L A Farrer
- Department of Medicine, Boston University School of Medicine, Boston, MA, United States
| | - D Ngo
- Department of Medicine, Boston University School of Medicine, Boston, MA, United States
| | - V Vathipadiekal
- Department of Medicine, Boston University School of Medicine, Boston, MA, United States
| | - D H K Chui
- Department of Medicine, Boston University School of Medicine, Boston, MA, United States
| | - A K Al-Ali
- Prince Mohammed Center for Research & Consultation Studies, University of Dammam, Dammam, Saudi Arabia
| | - M H Steinberg
- Department of Medicine, Boston University School of Medicine, Boston, MA, United States
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Fan H, Kao W, Yang YH, Gu R, Harris J, Fingerle-Rowson G, Bucala R, Ngo D, Beaulieu E, Morand EF. Macrophage migration inhibitory factor inhibits the antiinflammatory effects of glucocorticoids via glucocorticoid-induced leucine zipper. Arthritis Rheumatol 2014; 66:2059-70. [PMID: 24782327 DOI: 10.1002/art.38689] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2013] [Accepted: 04/25/2014] [Indexed: 12/28/2022]
Abstract
OBJECTIVE Glucocorticoids remain a mainstay in the treatment of rheumatoid arthritis (RA). Dose-dependent adverse effects highlight the need for therapies that regulate glucocorticoid sensitivity to enable dosage reduction. Macrophage migration inhibitory factor (MIF) is a proinflammatory protein that has been implicated in the pathogenesis of RA; it impairs glucocorticoid sensitivity via MAPK phosphatase 1 (MKP-1) inhibition. The intracellular protein glucocorticoid-induced leucine zipper (GILZ) mimics the effects of glucocorticoids in models of RA, but whether it represents a target for the modulation of glucocorticoid sensitivity remains unknown. We undertook this study to investigate whether GILZ is involved in the regulation of glucocorticoid sensitivity by MIF. METHODS GILZ expression was studied in the presence and absence of MIF, and the role of GILZ in the MIF-dependent regulation of the glucocorticoid sensitivity mediator MKP-1 was studied at the level of expression and function. RESULTS GILZ expression was significantly inhibited by endogenous MIF, both basally and during responses to glucocorticoid treatment. The effects of MIF on GILZ were dependent on the expression and Akt-induced nuclear translocation of the transcription factor FoxO3A. GILZ was shown to regulate the expression of MKP-1 and consequent MAPK phosphorylation and cytokine release. CONCLUSION MIF exerts its effects on MKP-1 expression and MAPK activity through inhibitory effects on GILZ. These findings suggest a previously unsuspected interaction between MIF and GILZ and identify GILZ as a potential target for the therapeutic regulation of glucocorticoid sensitivity.
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Affiliation(s)
- Huapeng Fan
- Monash University, Clayton, Victoria, Australia
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Fuster J, Zuriaga M, Ngo D, Farb M, Aprahamian T, Yamaguchi T, Gokce N, Walsh K. Non-canonical wnt signaling promotes obesity-induced adipose tissue inflammation and metabolic dysfunction. Atherosclerosis 2014. [DOI: 10.1016/j.atherosclerosis.2014.05.041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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38
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Cheng Q, Fan H, Ngo D, Beaulieu E, Leung P, Lo CY, Burgess R, van der Zwan YG, White SJ, Khachigian LM, Hickey MJ, Morand EF. GILZ Overexpression Inhibits Endothelial Cell Adhesive Function through Regulation of NF-κB and MAPK Activity. J I 2013; 191:424-33. [DOI: 10.4049/jimmunol.1202662] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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39
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Ngo D, Beaulieu E, Gu R, Leaney A, Santos L, Fan H, Yang Y, Kao W, Xu J, Escriou V, Loiler S, Vervoordeldonk MJ, Morand EF. Divergent Effects of Endogenous and Exogenous Glucocorticoid-Induced Leucine Zipper in Animal Models of Inflammation and Arthritis. ACTA ACUST UNITED AC 2013; 65:1203-12. [DOI: 10.1002/art.37858] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2012] [Accepted: 01/03/2013] [Indexed: 12/26/2022]
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40
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Nguyen TH, Tan A, Santos L, Ngo D, Edwards GA, Porter CJ, Prestidge CA, Boyd BJ. Silica–lipid hybrid (SLH) formulations enhance the oral bioavailability and efficacy of celecoxib: An in vivo evaluation. J Control Release 2013; 167:85-91. [DOI: 10.1016/j.jconrel.2013.01.012] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Revised: 01/10/2013] [Accepted: 01/12/2013] [Indexed: 01/01/2023]
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Ngo D, Cheng Q, O′Connor AE, DeBoer KD, Lo CY, Beaulieu E, De Seram M, Hobbs RM, O′Bryan MK, Morand EF. Glucocorticoid-induced leucine zipper (GILZ) regulates testicular FOXO1 activity and spermatogonial stem cell (SSC) function. PLoS One 2013; 8:e59149. [PMID: 23516608 PMCID: PMC3597624 DOI: 10.1371/journal.pone.0059149] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Accepted: 02/12/2013] [Indexed: 01/08/2023] Open
Abstract
Spermatogonia stem cell (SSC) self-renewal and differentiation are tightly regulated processes that ensure a continued production of mature sperm throughout male adulthood. In the present study, we investigated the role of glucocorticoid-induced leucine zipper (GILZ) in maintenance of the male germline and spermatogenesis. GILZ was detectable in germ cells of wild type mice on the day of birth, suggesting a role for GILZ in prospermatogonia and SSC pool formation. Gilz KO mice were generated and adult males were azoospermic and sterile. During the first wave of spermatogenesis in Gilz KO mice, spermatogenesis arrested part way through pachytene of meiosis I. Subsequent waves resulted in a progressive depletion of germ cells through apoptosis to ultimately produce a Sertoli cell-only phenotype. Further, in contrast to wild type littermates, PLZF+ cells were detected in the peri-luminal region of Gilz KO mice at day 6 post-natal, suggesting a defect in prospermatogonia migration in the absence of GILZ. At age 30 days, transient accumulation of PLZF+ cells in a subset of tubules and severely compromised spermatogenesis were observed in Gilz KO mice, consistent with defective SSC differentiation. GILZ deficiency was associated with an increase in FOXO1 transcriptional activity, which leads to activation of a selective set of FOXO1 target genes, including a pro-apoptotic protein, BIM. On the other hand, no evidence of a heightened immune response was observed. Together, these results suggest that GILZ suppresses FOXO1 nuclear translocation, promotes SSC differentiation over self-renewal, and favours germ cell survival through inhibition of BIM-dependent pro-apoptotic signals. These findings provide a mechanism for the effects of GILZ on spermatogenesis and strengthen the case for GILZ being a critical molecule in the regulation of male fertility.
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Affiliation(s)
- Devi Ngo
- Department of Medicine, Centre for Inflammatory Diseases, Monash Medical Centre, Monash University, Clayton, Victoria, Australia
| | - Qiang Cheng
- Department of Medicine, Centre for Inflammatory Diseases, Monash Medical Centre, Monash University, Clayton, Victoria, Australia
- * E-mail: (QC); (EM)
| | - Anne E. O′Connor
- Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia
| | - Kathleen D. DeBoer
- Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia
| | - Camden Y. Lo
- Monash Micro Imaging, Monash University, Clayton, Victoria, Australia
| | - Elaine Beaulieu
- Department of Medicine, Centre for Inflammatory Diseases, Monash Medical Centre, Monash University, Clayton, Victoria, Australia
| | - Mia De Seram
- Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia
| | - Robin M. Hobbs
- Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia
| | - Moira K. O′Bryan
- Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia
| | - Eric F. Morand
- Department of Medicine, Centre for Inflammatory Diseases, Monash Medical Centre, Monash University, Clayton, Victoria, Australia
- * E-mail: (QC); (EM)
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Procter N, Ball J, Ngo D, Chirkov Y, Isenberg J, Hylek E, Stewart S, Horowitz J. Impact of Female Gender and Admission Heart Rate on Platelet Aggregation and Nitric Oxide Signalling in Atrial Fibrillation. Heart Lung Circ 2013. [DOI: 10.1016/j.hlc.2013.05.153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Yang YH, Song W, Deane JA, Kao W, Ooi JD, Ngo D, Kitching AR, Morand EF, Hickey MJ. Deficiency of annexin A1 in CD4+ T cells exacerbates T cell-dependent inflammation. J Immunol 2012; 190:997-1007. [PMID: 23267026 DOI: 10.4049/jimmunol.1202236] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Annexin A1 (AnxA1) is recognized as an endogenous anti-inflammatory molecule. However, its effects on the adaptive immune response and, in particular, on T cells remain unclear. In this study, we investigated the actions of AnxA1 in three distinct models of T cell-mediated inflammation. In contact hypersensitivity, collagen-induced arthritis, and inflammation induced by OT-II TCR transgenic T cells responding to OVA, AnxA1 deficiency significantly increased Ag-induced T cell proliferation and the resultant level of inflammation. In the contact hypersensitivity model, this was associated with increased adhesion of CD4(+) T cells, CD8(+) T cells, and neutrophils in the dermal microvasculature, as well as increased T cell expression of RORγt and IL-17A. In collagen-induced arthritis, deficiency of endogenous AnxA1 increased susceptibility to arthritis and Ag-specific T cell activation. Deficiency of AnxA1 also increased OVA-induced cutaneous delayed-type hypersensitivity and IFN-γ and IL-17 release. Transfer experiments using CD4(+) T cells from AnxA1(-/-) mice demonstrated that the absence of AnxA1 solely in T cells resulted in increased inflammatory responses in wild-type recipients. Similarly, experiments using AnxA1(-/-) OT-II CD4(+) T cells demonstrated that the absence of AnxA1 in T cells was sufficient to induce increased Ag-specific CD4(+) T cell proliferation in vivo, augment T cell production of IFN-γ, IL-17, TNF, and IL-6, and increase Akt, ERK, and p38 activation. Together, these findings indicate that T cell-expressed AnxA1 functions to attenuate T cell-driven inflammatory responses via T cell-intrinsic effects on intracellular signaling, proliferation, and Th1/Th17 cytokine release.
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Affiliation(s)
- Yuan H Yang
- Centre for Inflammatory Diseases, Department of Medicine, Southern Clinical School, Monash University Faculty of Medicine, Nursing and Health Sciences, Monash Medical Centre, Clayton, Victoria 3168, Australia.
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Ngo D, Fraternali F, Daraio C. Highly nonlinear solitary wave propagation in Y-shaped granular crystals with variable branch angles. Phys Rev E Stat Nonlin Soft Matter Phys 2012; 85:036602. [PMID: 22587197 DOI: 10.1103/physreve.85.036602] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2011] [Indexed: 05/31/2023]
Abstract
We study the propagation of highly nonlinear waves in a branched (Y-shaped) granular crystal composed of chains of spherical particles of different materials, arranged at variable branch angles. We experimentally test the dynamic behavior of a solitary pulse, or of a train of solitary waves, crossing the Y-junction interface, and splitting between the two branches. We describe the dependence of the split pulses' speed and amplitude on the branch angles. Analytic predictions based on the quasiparticle model and numerical simulations based on Hertzian interactions between the particles are found to be in excellent agreement with the experimental data.
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Affiliation(s)
- D Ngo
- Engineering and Applied Science, California Institute of Technology, Pasadena California 91125, USA
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Chan W, Sverdlov A, Ngo D, Rajendran S, Chirkov Y, Horowitz J. Polycystic Ovarian Syndrome as a State of Premature Ageing of the Nitric Oxide System. Heart Lung Circ 2012. [DOI: 10.1016/j.hlc.2012.05.630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Santos LL, Fan H, Hall P, Ngo D, Mackay CR, Fingerle-Rowson G, Bucala R, Hickey MJ, Morand EF. Macrophage migration inhibitory factor regulates neutrophil chemotactic responses in inflammatory arthritis in mice. ACTA ACUST UNITED AC 2011; 63:960-70. [PMID: 21452319 DOI: 10.1002/art.30203] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OBJECTIVE Macrophage migration inhibitory factor (MIF) facilitates multiple aspects of inflammatory arthritis, the pathogenesis of which has been significantly linked to the activity of neutrophils. The effects of MIF on neutrophil recruitment are unknown. This study was undertaken to investigate the contribution of MIF to the regulation of neutrophil chemotactic responses. METHODS K/BxN serum-transfer arthritis was induced in wild-type (WT), MIF(-/-) , and monocyte chemotactic protein 1 (MCP-1; CCL2)-deficient mice as well as in WT mice treated with monoclonal antibodies to cytokine-induced neutrophil chemoattractant (anti-KC). Leukocyte trafficking in vivo was examined using intravital microscopy, and neutrophil function in vitro was examined using migration chambers and assessment of MAP kinase activation. RESULTS K/BxN serum-transfer arthritis was markedly attenuated in MIF(-/-) mice, with reductions in the clinical and histologic severity of arthritis and the synovial expression of KC and interleukin-1. Arthritis was also reduced by anti-KC antibody treatment, but not in MCP-1-deficient mice. In vivo, neutrophil recruitment responses to KC were reduced in MIF(-/-) mice. Similarly, MIF(-/-) mouse neutrophils exhibited reduced chemotactic responses to KC in vitro, despite displaying unaltered chemokine receptor expression. Reduced chemotactic responses of MIF(-/-) mouse neutrophils were associated with reduced phosphorylation of p38 and ERK MAP kinases. CONCLUSION These findings suggest that MIF promotes neutrophil trafficking in inflammatory arthritis via facilitation of chemokine-induced migratory responses and MAP kinase activation. Therapeutic MIF inhibition could limit synovial neutrophil recruitment.
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Sverdlov A, Ngo D, Chirkov Y, Horowitz J. Insight into Retardation of Aortic Stenosis: A Therapeutic Role for ACE Inhibitors? Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Daraio C, Ngo D, Nesterenko VF, Fraternali F. Highly nonlinear pulse splitting and recombination in a two-dimensional granular network. Phys Rev E Stat Nonlin Soft Matter Phys 2010; 82:036603. [PMID: 21230199 DOI: 10.1103/physreve.82.036603] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2009] [Revised: 06/10/2010] [Indexed: 05/30/2023]
Abstract
The propagation of highly nonlinear signals in a branched two-dimensional granular system was investigated experimentally and numerically for a system composed of chains of spherical beads of different materials. The system studied consists of a double Y-shaped guide in which high- and low-modulus/mass chains of spheres are arranged in various geometries. We observed the transformation of a single or a train of solitary pulses crossing the interface between branches. We report fast splitting of the initial pulse, rapid chaotization of the signal and impulse redirection and bending. Pulse and energy trapping was also observed in the branches. Numerical analysis based on Hertzian interaction between the particles and the side walls of the guide was found in agreement with the experimental data, except for nonsymmetric arrangements of particles excited by a large mass striker.
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Affiliation(s)
- C Daraio
- Aeronautics (GALCIT) and Applied Physics, California Institute of Technology, Pasadena, California 91125, USA
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Beaulieu E, Ngo D, Santos L, Yang YH, Smith M, Jorgensen C, Escriou V, Scherman D, Courties G, Apparailly F, Morand EF. Glucocorticoid-induced leucine zipper is an endogenous antiinflammatory mediator in arthritis. ACTA ACUST UNITED AC 2010; 62:2651-61. [DOI: 10.1002/art.27566] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Yang YH, Ngo D, Jones M, Simpson E, Fritzemeier KH, Morand EF. Endogenous estrogen regulation of inflammatory arthritis and cytokine expression in male mice, predominantly via estrogen receptor alpha. ACTA ACUST UNITED AC 2010; 62:1017-25. [PMID: 20131258 DOI: 10.1002/art.27330] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
OBJECTIVE A number of experimental observations have associated elevated estrogen levels with amelioration of inflammation. The involvement of estrogen and estrogen receptor (ER) isotypes in the regulation of inflammation in males is not well understood. In this study, we used specific ERalpha and ERbeta agonists in male mice deficient in estrogen because of a deletion of aromatase (aromatase-knockout [ArKO] mice) to investigate ER isotype utilization in estrogen regulation of inflammation. METHODS Lipopolysaccharide (LPS)-induced cytokine expression and antigen-induced arthritis (AIA) were investigated in male ArKO and WT littermate mice, as well as in response to selective agonists of ERalpha (16alpha-LE2) and ERbeta (8beta-VE2). The therapeutic effect of selective ER agonists was also examined in mice with collagen-induced arthritis (CIA). RESULTS Estrogen deficiency in ArKO mice was associated with significant increases in LPS-induced serum interleukin-6 (IL-6), tumor necrosis factor, monocyte chemotactic protein 1, and interferon-gamma levels, which were significantly abrogated by administration of 16alpha-LE2, but not 8beta-VE2. In contrast, both 16alpha-LE2 and 8beta-VE2 significantly increased LPS-induced IL-10 levels. Estrogen deficiency was also associated with significant exacerbation of AIA and antigen-specific T cell proliferation, which was reversed by administration of either 16alpha-LE2 or 8beta-VE2. ArKO mice showed increased antigen-specific T cell proliferation in response to immunization with type II collagen (CII). Administration of 16alpha-LE2, but not 8beta-VE2, significantly reduced the severity of CIA, which was associated with inhibition of anti-CII-specific IgG. CONCLUSION These data indicate that endogenous estrogen plays an essential inhibitory role in inflammation in male mice and that ERalpha is the dominant receptor that mediates these effects.
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Affiliation(s)
- Y H Yang
- Monash University Department of Medicine and Monash Medical Centre, Clayton, Victoria 3168, Australia.
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