%0 Journal Article
%A Cuéllar Del Hoyo, María Del Carmen
%A Hurtado-Marcos,C.
%A Valdivieso,E.
%A Vaccaro,L.
%A González Fernández, Juan
%A Jiménez,A.I.
%A Pérez-Griera,J.
%A Benlloch,S.
%A Amorós,C.
%A Gil-Borrás,R.
%A Sorando-Serra,R.
%A Cano-Cano,M.J.
%A Andreu-Ballester,J.C.
%T Immune dysregulation, apoptosis impairment, and enhanced seroreactivity to Anisakis simplex in Crohn’s disease: interplay of IL-7/IL-7R signalling and CD132 deficiency
%D 2025
%U https://hdl.handle.net/20.500.14352/130110
%X BACKGROUND In previous studies, we identified a deficiency of γδ T cells and an increased prevalence of anti-Anisakis simplex antibodies in patients with Crohn’s disease (CD). Additionally, decreased gene expression of the interleukin 2 (IL-2) receptor γ subunit (CD132) was observed in tissues from CD patients.OBJECTIVE To analyse the gene expression of IL-7 and its receptors in tissues from CD patients and to explore its relationship with anti-A. simplex antibodies.METHODS 52 patients diagnosed with CD were compared with a control group of 52 healthy individuals. Peripheral blood samples were analysed to assess levels of anti-A. simplex antibodies and IL-7. In addition, intestinal tissue samples from 20 subjects in each group were examined to evaluate IL-7 gene expression, IL-7 protein levels, the IL-2 receptor γ subunit (CD132), the IL-7 receptor α subunit (CD127), and caspase-3 expression.FINDINGS Anti-A. simplex antibody levels were elevated in patients with CD. Caspase-3 expression was significantly reduced in the tissues of CD patients with anti-A. simplex IgA, and this reduction extended to IgG and IgE in healthy individuals. A negative correlation was observed between caspase-3 levels and serum anti-A. simplex IgA, as well as IL-7 levels in the tissues of CD patients. In healthy subjects, tissue IL-7 levels were lower in those positive for anti-A. simplex IgA, while serum IL-7 levels were higher in individuals positive for anti-A. simplex IgG.MAIN CONCLUSIONS This study revealed the interplay between IL-7 signalling, γδ T cell deficiency, and immune responses to A. simplex in CD. Our findings underscored a cause-effect relationship between CD132 deficiency, γδ T cell depletion, and defective mucosal immunity, which may drive both CD inflammation and susceptibility to parasitic infections like A. simplex.
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