1
|
Chimenti MS, Sunzini F, Fiorucci L, Botti E, Fonti GL, Conigliaro P, Triggianese P, Costa L, Caso F, Giunta A, Esposito M, Bianchi L, Santucci R, Perricone R. Potential Role of Cytochrome c and Tryptase in Psoriasis and Psoriatic Arthritis Pathogenesis: Focus on Resistance to Apoptosis and Oxidative Stress. Front Immunol 2018; 9:2363. [PMID: 30429845 PMCID: PMC6220124 DOI: 10.3389/fimmu.2018.02363] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 09/24/2018] [Indexed: 02/06/2023] Open
Abstract
Psoriasis (PsO) is an autoimmune disease characterized by keratinocyte proliferation, chronic inflammation and mast cell activation. Up to 42% of patients with PsO may present psoriatic arthritis (PsA). PsO and PsA share common pathophysiological mechanisms: keratinocytes and fibroblast-like synoviocytes are resistant to apoptosis: this is one of the mechanism facilitating their hyperplasic growth, and at joint level, the destruction of articular cartilage, and bone erosion and/or proliferation. Several clinical studies regarding diseases characterized by impairment of cell death, either due to apoptosis or necrosis, reported cytochrome c release from the mitochondria into the extracellular space and finally into the circulation. The presence of elevated cytochrome c levels in serum has been demonstrated in diseases as inflammatory arthritis, myocardial infarction and stroke, and liver diseases. Cytochrome c is a signaling molecule essential for apoptotic cell death released from mitochondria to the cytosol allowing the interaction with protease, as the apoptosis protease activation factor, which lead to the activation of factor-1 and procaspase 9. It has been demonstrated that this efflux from the mitochondria is crucial to start the intracellular signaling responsible for apoptosis, then to the activation of the inflammatory process. Another inflammatory marker, the tryptase, a trypsin-like serine protease produced by mast cells, is released during inflammation, leading to the activation of several immune cells through proteinase-activated receptor-2. In this review, we aimed at discussing the role played by cytochrome c and tryptase in PsO and PsA pathogenesis. To this purpose, we searched pathogenetic mechanisms in PUBMED database and review on oxidative stress, cytochrome c and tryptase and their potential role during inflammation in PsO and PsA. To this regard, the cytochrome c release into the extracellular space and tryptase may have a role in skin and joint inflammation.
Collapse
Affiliation(s)
- Maria Sole Chimenti
- Rheumatology, Allergology and Clinical Immunology, University of Rome Tor Vergata, Rome, Italy
| | - Flavia Sunzini
- Rheumatology, Allergology and Clinical Immunology, University of Rome Tor Vergata, Rome, Italy
| | - Laura Fiorucci
- Department of Clinical Sciences and Translational Medicine, University of Rome Tor Vergata, Rome, Italy
| | | | - Giulia Lavinia Fonti
- Rheumatology, Allergology and Clinical Immunology, University of Rome Tor Vergata, Rome, Italy
| | - Paola Conigliaro
- Rheumatology, Allergology and Clinical Immunology, University of Rome Tor Vergata, Rome, Italy
| | - Paola Triggianese
- Rheumatology, Allergology and Clinical Immunology, University of Rome Tor Vergata, Rome, Italy
| | - Luisa Costa
- Rheumatology Unit, Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Francesco Caso
- Rheumatology Unit, Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | | | - Maria Esposito
- Dermatology, University of Rome Tor Vergata, Rome, Italy
| | - Luca Bianchi
- Dermatology, University of Rome Tor Vergata, Rome, Italy
| | - Roberto Santucci
- Department of Clinical Sciences and Translational Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Roberto Perricone
- Rheumatology, Allergology and Clinical Immunology, University of Rome Tor Vergata, Rome, Italy
| |
Collapse
|
2
|
Abstract
Mast cells (MCs) are traditionally thought of as a nuisance for its host, for example, by causing many of the symptoms associated with allergic reactions. In addition, recent research has put focus on MCs for displaying harmful effects during various autoimmune disorders. On the other hand, MCs can also be beneficial for its host, for example, by contributing to the defense against insults such as bacteria, parasites, and snake venom toxins. When the MC is challenged by an external stimulus, it may respond by degranulation. In this process, a number of powerful preformed inflammatory "mediators" are released, including cytokines, histamine, serglycin proteoglycans, and several MC-specific proteases: chymases, tryptases, and carboxypeptidase A. Although the exact effector mechanism(s) by which MCs carry out their either beneficial or harmful effects in vivo are in large parts unknown, it is reasonable to assume that these mediators may contribute in profound ways. Among the various MC mediators, the exact biological function of the MC proteases has for a long time been relatively obscure. However, recent progress involving successful genetic targeting of several MC protease genes has generated powerful tools, which will enable us to unravel the role of the MC proteases both in normal physiology as well as in pathological settings. This chapter summarizes the current knowledge of the biology of the MC proteases.
Collapse
Affiliation(s)
- Gunnar Pejler
- Department of Anatomy, Physiology and Biochemistry, The Biomedical Centre, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | | | | | | |
Collapse
|