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Abstract
BACKGROUND: Anti-p200 pemphigoid is a subepidermal autoimmune blistering disease (AIBD) characterized by autoantibodies against a 200 kDa protein. Laminin γ1 has been described as target antigen in 70% to 90% of patients. No diagnostic assay is widely available for anti-p200 pemphigoid, which might be due to the unclear pathogenic relevance of anti-laminin γ1 autoantibodies.
OBJECTIVE: To identify a target antigen with higher clinical and diagnostic relevance.
METHODS: Immunoprecipitation, mass spectrometry, and immunoblotting were employed for analysis of skin extracts and sera of patients with anti-p200 pemphigoid (n = 60), other AIBD (n = 33), and healthy blood donors (n = 29). To localize the new antigen in skin, cultured keratinocytes and fibroblasts, quantitative real-time polymerase chain reaction and immunofluorescence microscopy were performed.
RESULTS: Laminin β4 was identified as target antigen of anti-p200 pemphigoid in all analyzed patients. It was located at the level of the basement membrane zone of the skin with predominant expression in keratinocytes.
LIMITATIONS: A higher number of sera needs to be tested to verify that laminin β4 is the diagnostically relevant antigen of anti-p200 pemphigoid.
CONCLUSION: The identification of laminin β4 as an additional target antigen in anti-p200 pemphigoid will allow its differentiation from other AIBD and as such, improve the management of these rare disorders.
Originalsprache | Englisch |
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Zeitschrift | Journal of the American Academy of Dermatology |
Jahrgang | 90 |
Ausgabenummer | 4 |
Seiten (von - bis) | 790-797 |
Seitenumfang | 8 |
ISSN | 0190-9622 |
DOIs | |
Publikationsstatus | Veröffentlicht - 04.2024 |
Strategische Forschungsbereiche und Zentren
- Forschungsschwerpunkt: Infektion und Entzündung - Zentrum für Infektions- und Entzündungsforschung Lübeck (ZIEL)
- Zentren: Center for Research on Inflammation of the Skin (CRIS)
DFG-Fachsystematik
- 2.21-05 Immunologie
- 2.22-19 Dermatologie
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SFB 1526, PANTAU: Pathomechanismen Antikörpervermittelter Autoimmunerkrankungen
Sadik, C. (Sprecher*in, Koordinator*in), Zillikens, D. (Sprecher*in, Koordinator*in), Scheffold, A. (Projektleiter*in (PI)), Schmidt, E. (Projektleiter*in (PI)), Heine, G. (Projektleiter*in (PI)), Manz, R. (Projektleiter*in (PI)), Köhl, J. (Projektleiter*in (PI)), Ludwig, R. (Projektleiter*in (PI)), Peipp, M. (Projektleiter*in (PI)), Hammers, M. C. (Projektleiter*in (PI)), Verschoor, A. (Projektleiter*in (PI)), Karsten, C. (Projektleiter*in (PI)), Nimmerjahn, F. (Projektleiter*in (PI)), Hutloff, A. (Projektleiter*in (PI)), Ibrahim, S. (Projektleiter*in (PI)), Wettschureck, N. (Projektleiter*in (PI)), Bieber, K. (Projektleiter*in (PI)), Schilf, P. (Projektleiter*in (PI)), Vaeth, M. (Projektleiter*in (PI)), Hirose, M. (Projektleiter*in (PI)), Vaeth, M. (Projektleiter*in (PI)), Baines, J. F. (Projektleiter*in (PI)), Bacher, P. (Projektleiter*in (PI)), Hoffmann, M. (Projektleiter*in (PI)), Busch, H. S. (Projektleiter*in (PI)), Höppner, M. (Projektleiter*in (PI)), Becker, M. (Projektleiter*in (PI)), Holtsche, M. M. (Projektleiter*in (PI)), Fähnrich, A. (Projektleiter*in (PI)), Szymczak, S. (Projektleiter*in (PI)), Murthy, S. (Projektleiter*in (PI)) & Lux, A. (Projektleiter*in (PI))
01.01.22 → …
Projekt: DFG-Projekte › DFG-Verbundforschung: Sonderforschungsbereiche/ Transregios