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Yusuf IO, Parsi S, Ostrow LW, Brown RH, Thompson PR, Xu Z. PAD2 dysregulation and aberrant protein citrullination feature prominently in reactive astrogliosis and myelin protein aggregation in sporadic ALS. Neurobiol Dis 2024; 192:106414. [PMID: 38253209 PMCID: PMC11003460 DOI: 10.1016/j.nbd.2024.106414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/11/2024] [Accepted: 01/19/2024] [Indexed: 01/24/2024] Open
Abstract
Alteration in protein citrullination (PC), a common posttranslational modification (PTM), contributes to pathogenesis in various inflammatory disorders. We previously reported that PC and protein arginine deiminase 2 (PAD2), the predominant enzyme isoform that catalyzes this PTM in the central nervous system (CNS), are altered in mouse models of amyotrophic lateral sclerosis (ALS). We now demonstrate that PAD2 expression and PC are altered in human postmortem ALS spinal cord and motor cortex compared to controls, increasing in astrocytes while trending lower in neurons. Furthermore, PC is enriched in protein aggregates that contain the myelin proteins PLP and MBP in ALS. These results confirm our findings in ALS mouse models and suggest that altered PAD2 and PC contribute to neurodegeneration in ALS.
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Affiliation(s)
- Issa O Yusuf
- Department of Biochemistry and Molecular Biotechnology, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Sepideh Parsi
- Department of Biochemistry and Molecular Biotechnology, University of Massachusetts Medical School, Worcester, MA 01605, USA; Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02110, USA
| | - Lyle W Ostrow
- Department of Neurology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA 19140, USA
| | - Robert H Brown
- Department of Neurology, RNA Therapeutic Institute, Neuroscience Program, University of Massachusetts Medical School, Worcester, MA, USA
| | - Paul R Thompson
- Department of Biochemistry and Molecular Biotechnology, University of Massachusetts Medical School, Worcester, MA 01605, USA; Program in Chemical Biology, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Zuoshang Xu
- Department of Biochemistry and Molecular Biotechnology, University of Massachusetts Medical School, Worcester, MA 01605, USA.
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Ibrahim N, Bleichert S, Klopf J, Kurzreiter G, Hayden H, Knöbl V, Artner T, Krall M, Stiglbauer-Tscholakoff A, Oehler R, Petzelbauer P, Busch A, Bailey MA, Eilenberg W, Neumayer C, Brostjan C. Reducing Abdominal Aortic Aneurysm Progression by Blocking Neutrophil Extracellular Traps Depends on Thrombus Formation. JACC Basic Transl Sci 2024; 9:342-360. [PMID: 38559632 PMCID: PMC10978405 DOI: 10.1016/j.jacbts.2023.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 10/02/2023] [Accepted: 11/01/2023] [Indexed: 04/04/2024]
Abstract
Neutrophil extracellular traps (NETs) are implicated in the pathogenesis of abdominal aortic aneurysm (AAA), located in adventitia and intraluminal thrombus. We compared the therapeutic potential of targeting upstream or downstream effector molecules of NET formation in 2 murine AAA models based on angiotensin II or peri-adventitial elastase application. In both models, NETs were detected in formed aneurysms at treatment start. Although NET inhibitors failed in the elastase model, they prevented progression of angiotensin II-induced aneurysms with thrombus, which resembles established human disease (including thrombus development). Blockade of upstream NET mediators was more effective than interference with downstream NET molecules.
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Affiliation(s)
- Nahla Ibrahim
- Division of Vascular Surgery, Department of General Surgery, Medical University of Vienna and University Hospital Vienna, Vienna, Austria
| | - Sonja Bleichert
- Division of Vascular Surgery, Department of General Surgery, Medical University of Vienna and University Hospital Vienna, Vienna, Austria
| | - Johannes Klopf
- Division of Vascular Surgery, Department of General Surgery, Medical University of Vienna and University Hospital Vienna, Vienna, Austria
| | - Gabriel Kurzreiter
- Division of Vascular Surgery, Department of General Surgery, Medical University of Vienna and University Hospital Vienna, Vienna, Austria
| | - Hubert Hayden
- Division of Vascular Surgery, Department of General Surgery, Medical University of Vienna and University Hospital Vienna, Vienna, Austria
| | - Viktoria Knöbl
- Division of Vascular Surgery, Department of General Surgery, Medical University of Vienna and University Hospital Vienna, Vienna, Austria
| | - Tyler Artner
- Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna and University Hospital Vienna, Vienna, Austria
| | - Moritz Krall
- Division of Vascular Surgery, Department of General Surgery, Medical University of Vienna and University Hospital Vienna, Vienna, Austria
| | - Alexander Stiglbauer-Tscholakoff
- Division of Cardiovascular and Interventional Radiology, Division of Molecular and Gender Imaging, Department of Biomedical Imaging and Image Guided Therapy, Medical University of Vienna and University Hospital Vienna, Vienna, Austria
| | - Rudolf Oehler
- Division of Visceral Surgery, Department of General Surgery, Medical University of Vienna and University Hospital Vienna, Vienna, Austria
| | - Peter Petzelbauer
- Skin and Endothelium Research Division, Department of Dermatology, Medical University of Vienna and University Hospital Vienna, Vienna, Austria
| | - Albert Busch
- Department for Visceral, Thoracic and Vascular Surgery, Technical University of Dresden and University Hospital Carl-Gustav Carus, Dresden, Germany
| | - Marc A. Bailey
- Leeds Institute for Cardiovascular and Metabolic Medicine, School of Medicine, University of Leeds, Leeds, United Kingdom
- Leeds Vascular Institute, Leeds General Infirmary, Leeds, United Kingdom
| | - Wolf Eilenberg
- Division of Vascular Surgery, Department of General Surgery, Medical University of Vienna and University Hospital Vienna, Vienna, Austria
| | - Christoph Neumayer
- Division of Vascular Surgery, Department of General Surgery, Medical University of Vienna and University Hospital Vienna, Vienna, Austria
| | - Christine Brostjan
- Division of Vascular Surgery, Department of General Surgery, Medical University of Vienna and University Hospital Vienna, Vienna, Austria
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