Interleukin‐36 cytokines are overexpressed in the skin and sera of patients with bullous pemphigoid

Author:

Maglie Roberto1ORCID,Mercurio Laura2,Morelli Martina2,Madonna Stefania2,Salemme Adele3,Baffa Maria E.1,Quintarelli Lavinia1,Di Zenzo Giovanni M.3,Antiga Emiliano1,Albanesi Cristina2

Affiliation:

1. Section of Dermatology, Department of Health Sciences University of Florence Florence Italy

2. Experimental Immunology Laboratory Istituto Dermopatico dell'Immacolata (IDI‐IRCCS) Rome Italy

3. Molecular and Cell Biology laboratory Istituto Dermopatico dell'Immacolata (IDI‐IRCCS) Rome Italy

Abstract

AbstractBullous pemphigoid (BP) is an autoimmune bullous disease, characterized by autoantibodies targeting BP180 and BP230. The role of interleukin (IL)‐36, a potent chemoattractant for granulocytes, in BP remains elusive.The expression of IL‐36 cytokines (IL‐36α, β, γ) and their antagonists (IL‐36Ra and IL‐38) was analysed in the skin and serum samples of patients with BP (n = 31), psoriasis (n = 10) and healthy controls (HC) (n = 14) by quantitative polymerase chain reaction and enzyme linked immunosorbent assay, respectively. Skin and serum levels of all cytokines were correlated with the Bullous Pemphigoid Disease Area Index (BPDAI) score and with the serum concentration of pathogenic antibodies.IL‐36α, IL‐36β, IL‐36γ and IL‐36Ra were significantly (p < 0.05) overexpressed in BP skin compared to HC, without remarkable differences relative to psoriasis skin. The expression of IL‐38 was significantly (p < 0.05) higher in BP compared to psoriasis skin.IL‐36α and γ, but not β, serum concentrations were significantly (p < 0.05) higher in BP compared to HC. IL‐36γ was significantly (p < 0.05) more expressed in the serum of psoriasis patients than BP. The serum concentration of IL‐36Ra and IL‐38 were similar between BP and HC, while IL‐38 serum levels were significantly (p < 0.05) higher in BP compared to psoriasis patients. Serum IL‐36α correlated significantly with BPDAI (r = 0.5 p = 0.001).IL‐36 agonists are increased in BP patients, both locally and systemically. Serum IL‐36α might represent a potential biomarker for BP. An inefficient balance between IL‐36 agonists and antagonists is likely to occur during BP inflammation.

Publisher

Wiley

Subject

Dermatology,Molecular Biology,Biochemistry

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