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Rosa I, Romano E, Fioretto BS, Manetti M. Autoantibodies as putative biomarkers and triggers of cell dysfunctions in systemic sclerosis. Curr Opin Rheumatol 2024:00002281-990000000-00128. [PMID: 39046085 DOI: 10.1097/bor.0000000000001035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2024]
Abstract
PURPOSE OF REVIEW Antinuclear autoantibodies represent a serological hallmark of systemic sclerosis (SSc), with anticentromere, antitopoisomerase-I, and anti-RNA polymerase III antibodies routinely assessed for diagnosis, clinical subset classification, and prognosis. In addition, an increasing number of autoantibodies have been demonstrated to play a pathogenic role by mediating different SSc manifestations. This review aims to give an overview on autoantibodies as putative biomarkers in SSc and discuss their possible pathogenic role as triggers of cell dysfunctions. RECENT FINDINGS Over the years, different autoantibodies have been proposed as biomarkers aiding in diagnosis, disease subtype classification, disease progression prediction, organ involvement, as well as in understanding treatment response. Increasing literature also indicates functional autoantibodies as direct contributors to SSc pathogenesis by exerting agonistic or antagonistic activities on their specific cognate targets. SUMMARY In SSc, search and validation of novel autoantibodies with higher diagnostic specificity and more accurate predictive values are increasingly needed for early diagnosis and specific follow-up, and to define the best therapeutic option according to different disease subsets. Moreover, since autoantibodies are also emerging as functional pathogenic players, a better unraveling of their possible pathomechanisms becomes essential to identify new targets and develop promising therapeutic agents able to neutralize their effects.
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Affiliation(s)
- Irene Rosa
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
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Muruganandam M, Ariza-Hutchinson A, Patel RA, Sibbitt WL. Biomarkers in the Pathogenesis, Diagnosis, and Treatment of Systemic Sclerosis. J Inflamm Res 2023; 16:4633-4660. [PMID: 37868834 PMCID: PMC10590076 DOI: 10.2147/jir.s379815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Accepted: 09/27/2023] [Indexed: 10/24/2023] Open
Abstract
Systemic sclerosis (SSc) is a complex autoimmune disease characterized by vascular damage, vasoinstability, and decreased perfusion with ischemia, inflammation, and exuberant fibrosis of the skin and internal organs. Biomarkers are analytic indicators of the biological and disease processes within an individual that can be accurately and reproducibly measured. The field of biomarkers in SSc is complex as recent studies have implicated at least 240 pathways and dysregulated proteins in SSc pathogenesis. Anti-nuclear antibodies (ANA) are classical biomarkers with well-described clinical classifications and are present in more than 90% of SSc patients and include anti-centromere, anti-Th/To, anti-RNA polymerase III, and anti-topoisomerase I antibodies. Transforming growth factor-β (TGF-β) is central to the fibrotic process of SSc and is intimately intertwined with other biomarkers. Tyrosine kinases, interferon-1 signaling, IL-6 signaling, endogenous thrombin, peroxisome proliferator-activated receptors (PPARs), lysophosphatidic acid receptors, and amino acid metabolites are new biomarkers with the potential for developing new therapeutic agents. Other biomarkers implicated in SSc-ILD include signal transducer and activator of transcription 4 (STAT4), CD226 (DNAX accessory molecule 1), interferon regulatory factor 5 (IRF5), interleukin-1 receptor-associated kinase-1 (IRAK1), connective tissue growth factor (CTGF), pyrin domain containing 1 (NLRP1), T-cell surface glycoprotein zeta chain (CD3ζ) or CD247, the NLR family, SP-D (surfactant protein), KL-6, leucine-rich α2-glycoprotein-1 (LRG1), CCL19, genetic factors including DRB1 alleles, the interleukins (IL-1, IL-4, IL-6, IL-8, IL-10 IL-13, IL-16, IL-17, IL-18, IL-22, IL-32, and IL-35), the chemokines CCL (2,3,5,13,20,21,23), CXC (8,9,10,11,16), CX3CL1 (fractalkine), and GDF15. Adiponectin (an indicator of PPAR activation) and maresin 1 are reduced in SSc patients. A new trend has been the use of biomarker panels with combined complex multifactor analysis, machine learning, and artificial intelligence to determine disease activity and response to therapy. The present review is an update of the various biomarker molecules, pathways, and receptors involved in the pathology of SSc.
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Affiliation(s)
- Maheswari Muruganandam
- Department of Internal Medicine, Division of Rheumatology and School of Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Angie Ariza-Hutchinson
- Department of Internal Medicine, Division of Rheumatology and School of Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Rosemina A Patel
- Department of Internal Medicine, Division of Rheumatology and School of Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Wilmer L Sibbitt
- Department of Internal Medicine, Division of Rheumatology and School of Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
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Di Maggio G, Confalonieri P, Salton F, Trotta L, Ruggero L, Kodric M, Geri P, Hughes M, Bellan M, Gilio M, Lerda S, Baratella E, Confalonieri M, Mondini L, Ruaro B. Biomarkers in Systemic Sclerosis: An Overview. Curr Issues Mol Biol 2023; 45:7775-7802. [PMID: 37886934 PMCID: PMC10604992 DOI: 10.3390/cimb45100490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 09/19/2023] [Accepted: 09/22/2023] [Indexed: 10/28/2023] Open
Abstract
Systemic sclerosis (SSc) is a complex autoimmune disease characterized by significant fibrosis of the skin and internal organs, with the main involvement of the lungs, kidneys, heart, esophagus, and intestines. SSc is also characterized by macro- and microvascular damage with reduced peripheral blood perfusion. Several studies have reported more than 240 pathways and numerous dysregulation proteins, giving insight into how the field of biomarkers in SSc is still extremely complex and evolving. Antinuclear antibodies (ANA) are present in more than 90% of SSc patients, and anti-centromere and anti-topoisomerase I antibodies are considered classic biomarkers with precise clinical features. Recent studies have reported that trans-forming growth factor β (TGF-β) plays a central role in the fibrotic process. In addition, interferon regulatory factor 5 (IRF5), interleukin receptor-associated kinase-1 (IRAK-1), connective tissue growth factor (CTGF), transducer and activator of transcription signal 4 (STAT4), pyrin-containing domain 1 (NLRP1), as well as genetic factors, including DRB1 alleles, are implicated in SSc damage. Several interleukins (e.g., IL-1, IL-6, IL-10, IL-17, IL-22, and IL-35) and chemokines (e.g., CCL 2, 5, 23, and CXC 9, 10, 16) are elevated in SSc. While adiponectin and maresin 1 are reduced in patients with SSc, biomarkers are important in research but will be increasingly so in the diagnosis and therapeutic approach to SSc. This review aims to present and highlight the various biomarker molecules, pathways, and receptors involved in the pathology of SSc.
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Affiliation(s)
- Giuseppe Di Maggio
- Pulmonology Unit, Department of Medical Surgical and Healt Sciencies, Hospital of Cattinara, University of Trieste, 34149 Trieste, Italy; (G.D.M.); (M.K.); (P.G.); (L.M.)
| | - Paola Confalonieri
- Pulmonology Unit, Department of Medical Surgical and Healt Sciencies, Hospital of Cattinara, University of Trieste, 34149 Trieste, Italy; (G.D.M.); (M.K.); (P.G.); (L.M.)
| | - Francesco Salton
- Pulmonology Unit, Department of Medical Surgical and Healt Sciencies, Hospital of Cattinara, University of Trieste, 34149 Trieste, Italy; (G.D.M.); (M.K.); (P.G.); (L.M.)
| | - Liliana Trotta
- Pulmonology Unit, Department of Medical Surgical and Healt Sciencies, Hospital of Cattinara, University of Trieste, 34149 Trieste, Italy; (G.D.M.); (M.K.); (P.G.); (L.M.)
| | - Luca Ruggero
- Pulmonology Unit, Department of Medical Surgical and Healt Sciencies, Hospital of Cattinara, University of Trieste, 34149 Trieste, Italy; (G.D.M.); (M.K.); (P.G.); (L.M.)
| | - Metka Kodric
- Pulmonology Unit, Department of Medical Surgical and Healt Sciencies, Hospital of Cattinara, University of Trieste, 34149 Trieste, Italy; (G.D.M.); (M.K.); (P.G.); (L.M.)
| | - Pietro Geri
- Pulmonology Unit, Department of Medical Surgical and Healt Sciencies, Hospital of Cattinara, University of Trieste, 34149 Trieste, Italy; (G.D.M.); (M.K.); (P.G.); (L.M.)
| | - Michael Hughes
- Division of Musculoskeletal and Dermatological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester & Salford Royal NHS Foundation Trust, Manchester M6 8HD, UK;
| | - Mattia Bellan
- Department of Translational Medicine, Università del Piemonte Orientale (UPO), 28100 Novara, Italy
- Center for Autoimmune and Allergic Disease (CAAD), Università del Piemonte Orientale (UPO), 28100 Novara, Italy
- Department of Medicine, Azienda Ospedaliero–Universitaria, Maggiore della Carità, 28100 Novara, Italy
| | - Michele Gilio
- Infectious Disease Unit, San Carlo Hospital, 85100 Potenza, Italy
| | - Selene Lerda
- Graduate School, University of Milan, 20149 Milano, Italy
| | - Elisa Baratella
- Department of Radiology, Cattinara Hospital, University of Trieste, 34149 Trieste, Italy
| | - Marco Confalonieri
- Pulmonology Unit, Department of Medical Surgical and Healt Sciencies, Hospital of Cattinara, University of Trieste, 34149 Trieste, Italy; (G.D.M.); (M.K.); (P.G.); (L.M.)
| | - Lucrezia Mondini
- Pulmonology Unit, Department of Medical Surgical and Healt Sciencies, Hospital of Cattinara, University of Trieste, 34149 Trieste, Italy; (G.D.M.); (M.K.); (P.G.); (L.M.)
| | - Barbara Ruaro
- Pulmonology Unit, Department of Medical Surgical and Healt Sciencies, Hospital of Cattinara, University of Trieste, 34149 Trieste, Italy; (G.D.M.); (M.K.); (P.G.); (L.M.)
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