ArticleJournal of inflammation research2025
Anti-PS IgG Immune Complexes Impair Macrophage Phagocytosis in SLE via LOX-Dependent Oxidative Stress.
Article in Journal of inflammation research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.
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Who cites it
4 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Anti-phospholipid antibodies as a risk factor for renal injury in patients with systemic lupus erythematosus: a comprehensive analysis.Frontiers in immunology · 2026Pooled it
- Human biomarker navigator.iMeta · 2026Review
- Autoantibody repertoire in lupus nephritis: from pathogenic mechanisms to clinical integration for precision decision-making.Frontiers in immunology · 2026Review
- Shared immune dysregulation in systemic lupus erythematosus and colorectal cancer: a multi-omics guided discovery of DNASE1L3-centric efferocytosis deficiency.Frontiers in immunology · 2026Article
Corrections and comments
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Authors and funding
20 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Purpose: Systemic lupus erythematosus (SLE) is a severe autoimmune disease with systemic complications mediated by immune-complex formation. The elevated level of anti-phosphatidylserine (PS) IgG has been implicated in SLE pathogenesis. In this study, we aimed to explore the effector mechanisms of PS immune-complex during lupus development. Patients and Methods: Serological profiles of immune-complexes in SLE patients were analyzed. Immunofluorescence staining showed PS-IgG immune-complex deposition in kidney biopsies of lupus nephritis patients. C57BL/6J mice were immunized with PS for immune-complex and renal function assessment. The roles of PS-IgG immune-complex and lysyl oxidase (LOX) were validated from SLE PBMCs, THP-1 cell line and PS-immunized lupus mice. The intracellular reactive oxygen species (ROS) levels, and phagocytosis function were examined by flow cytometry in SLE PBMCs, THP-1 cell line and PS-immunized lupus mice. For in vitro treatment, the effects of antioxidant N-acetylcysteine (NAC) and LOX inhibitor β-Aminopropionitrile (BAPN) were verified in THP-1 cell line and cells from PS-immunized lupus mice. Results: SLE and lupus nephritis (LN) patients showed significant elevated circulating and glomerular PS-IgG immune-complex levels. ROC analysis indicated PS-IgG immune-complex as a strong biomarker in SLE and LN. Mechanistically, induced macrophages from SLE patients treated with PS-IgG immune-complex significantly increased cytoplasmic ROS levels, elevated LOX expression and exhibited dampened phagocytotic function. In mice, PS immunization triggered PS-IgG immune complex formation, increased LOX expression, immune-complex deposited glomerular nephritis, and impaired phagocytotic function of macrophages. NAC and BAPN treatment restored the phagocytotic function of human and murine macrophages. Conclusion: Our results indicate that PS-IgG immune-complex can directly impair macrophage phagocytotic functions via LOX mediated-oxidative stress and may serve as a novel biomarker for SLE.
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