ArticleFrontiers in immunology2023
Characterization of circulating extracellular traps and immune responses to citrullinated LL37 in psoriasis.
Article in Frontiers in immunology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 9 citations in OpenAlex.
- Discovery of Post-Translationally Modified Epitopes in Autoimmunity: Someone Has to Fish so Everyone Can Eat.Immunological reviews · 2026Review
- A review of core immuno-inflammatory mechanisms and key regulatory targets in psoriasis.American journal of clinical and experimental immunology · 2026Review
- Fire Needling Acupuncture Reduces Neutrophil Extracellular Traps (NETs) Formation and Inhibits TLR4/NF-κB/LCN2 Pathway in Psoriasis-Like Skin Lesions.Journal of inflammation research · 2026Article
- Epigenetic regulatory mechanisms of autoimmune skin diseases: novel biomarkers and therapeutic prospects.Clinical epigenetics · 2025Review
- Saturated fatty acid-induced neutrophil extracellular traps contribute to exacerbation and biologic therapy resistance in obesity-related psoriasis.Cellular & molecular immunology · 2025Article
- The nature of the post-translational modifications of the autoantigen LL37 influences the autoreactive T-helper cell phenotype in psoriasis.Frontiers in immunology · 2025Article
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Authors and funding
9 authors at 5 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: The DNA-binding peptide LL37 is a suspected autoantigen in psoriasis. It can be found in neutrophil extracellular traps (NETs) which have been suggested to play a role in the pathogenesis of the disease. Citrullination, the conversion of peptidyl-arginine into peptidyl-citrulline, can be implicated in the formation of NETs. We hypothesized that citrullination increases LL37 immunogenicity and that NETs are a source of LL37. Objectives: We aimed to characterize cytokine responses of B cells and T cells to native and citrullinated LL37 (citLL37) and determine the prevalence and composition of circulating NETs in patients with psoriasis and healthy blood donors (HDs). Methods: Mononuclear cells (MNCs) and serum were isolated from 20 HDs and 20 patients with psoriasis. The MNCs were stimulated with native LL37 and citLL37 and the proportion of cytokine-positive B cells and T cells was determined by flow cytometry. Circulating antibodies against native LL37 and citLL37 as well as circulating NETs were measured by ELISA, as was the content of LL37, citLL37, and IgG in the NETs. Results: CitLL37, but not native LL37, induced IFN-γ-production by T cells and B cells from psoriasis patients, as well as IL-10-production by the patients' CD4 Conclusion: Citrullinated but not native LL37 elicits IFN-γ-responses by T cells and B cells from psoriasis patients, particularly those with circulating NETs and early disease onset, suggesting a role of citLL37 as an autoantigen in this subgroup of patients.
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