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Krautter F, Hussain MT, Zhi Z, Lezama DR, Manning JE, Brown E, Marigliano N, Raucci F, Recio C, Chimen M, Maione F, Tiwari A, McGettrick HM, Cooper D, Fisher EA, Iqbal AJ. Galectin-9: A novel promoter of atherosclerosis progression. Atherosclerosis 2022; 363:57-68. [PMID: 36459823 DOI: 10.1016/j.atherosclerosis.2022.11.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 04/30/2022] [Revised: 11/09/2022] [Accepted: 11/16/2022] [Indexed: 11/20/2022]
Abstract
BACKGROUND AND AIMS Atherosclerosis is widely accepted to be an inflammatory disease driven by lipid accumulation and leukocyte recruitment. More recently, galectins, a family of β-galactoside binding proteins, have been shown to play a role in leukocyte recruitment among other immunomodulatory functions. Galectin (Gal) -9, a tandem repeat type galectin expressed by the endothelium in inflammatory environments, has been proposed to promote leukocyte recruitment. However, the role of Gal-9 in the context of monocyte recruitment remains elusive. METHODS AND RESULTS Here, we characterise the immunomodulatory role of Gal-9 in context of atherosclerosis. We show that ApoE-/-Gal-9-/- mice have a significantly reduced aortic plaque burden compared to their ApoE-/- littermate controls after 12 weeks of high fat diet. RNA sequencing data from two independent studies reveal Lgals9 expression in leukocyte clusters isolated from murine atherosclerotic plaques. Additionally, soluble Gal-9 protein induces monocyte activation and a pro-inflammatory phenotype in macrophages. Furthermore, we show that immobilised recombinant Gal-9 acts as capture and adhesion molecule for CD14+ monocytes in a β2-integrin and glycan dependent manner, while adhesion of monocytes to stimulated endothelium is reduced when Gal-9 is knocked down. Gal-9 also facilitates enhanced recruitment of leukocytes from peripheral arterial disease (PAD) patients compared to healthy young and aged controls. We further characterise the endothelium as source of circulating Gal-9, which is increased in plasma of PAD patients compared to healthy controls. CONCLUSIONS These results highlight a pathological role for Gal-9 as promoter of monocyte recruitment and atherosclerotic plaque progression, making it a novel target in the prevention of plaque formation and progression.
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Affiliation(s)
- Franziska Krautter
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Mohammed T Hussain
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom; The William Harvey Research Institute, Barts and The London School of Medicine, Queen Mary University of London, London, United Kingdom
| | - Zhaogong Zhi
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Danielle R Lezama
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Julia E Manning
- Institute of Inflammation and Aging, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Emily Brown
- Department of Medicine, Division of Cardiology, And the Cardiovascular Research Center, NYU School of Medicine, New York, United States
| | - Noemi Marigliano
- ImmunoPharmaLab, Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Federica Raucci
- ImmunoPharmaLab, Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Carlota Recio
- Instituto Universitario de Investigaciones Biomédicas y Sanitarias (IUIBS), Universidad de Las Palmas de Gran Canaria, Farmacología Molecular y Translacional - BIOPharm, Las Palmas de G.C, Spain
| | - Myriam Chimen
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Francesco Maione
- ImmunoPharmaLab, Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Alok Tiwari
- Department of Vascular Surgery, University Hospitals Birmingham, Edgbaston, Birmingham, United Kingdom
| | - Helen M McGettrick
- Institute of Inflammation and Aging, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Dianne Cooper
- The William Harvey Research Institute, Barts and The London School of Medicine, Queen Mary University of London, London, United Kingdom
| | - Edward A Fisher
- Department of Medicine, Division of Cardiology, And the Cardiovascular Research Center, NYU School of Medicine, New York, United States
| | - Asif J Iqbal
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom; ImmunoPharmaLab, Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Naples, Italy.
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Lezama DR, Chimen M, Iqbal AJ, Rainger GE. P19 THE OMEGA 3 POLYUNSATURATED FATTY ACID, EICOSAPENTAENOIC ACID INHIBITS FOAM CELL FORMATION AND SECRETION OF PRO-INFLAMMATORY MEDIATORS. Cardiovasc Res 2018. [DOI: 10.1093/cvr/cvy216.022] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- D R Lezama
- Institute of Cardiovascular Sciences, The College of Medicine and Dentistry, The University of Birmingham, Birmingham
| | - M Chimen
- Institute of Cardiovascular Sciences, The College of Medicine and Dentistry, The University of Birmingham, Birmingham
| | - A J Iqbal
- Institute of Cardiovascular Sciences, The College of Medicine and Dentistry, The University of Birmingham, Birmingham
| | - G E Rainger
- Institute of Cardiovascular Sciences, The College of Medicine and Dentistry, The University of Birmingham, Birmingham
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