IgG from atopic dermatitis patients induces non-atopic infant thymic invariant natural killer T (iNKT) cells to produce IL-4, IL-17, and IL-10

Autor(es)

Santos, Ludimila S. ; Sgnotto, Fabio da Ressureicao ; Sousa, Thamires R. ; Orfali, Raquel L. ; Aoki, Valeria ; da Silva Duarte, Alberto Jose ; Victor, Jefferson R.

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF DERMATOLOGY; v. 59, n. 3, p. 6-pg., 2019-10-20.

Resumo

Background Atopic dermatitis (AD) pathogenesis still needs to be elucidated, but invariant natural killer T (iNKT) cell involvement was already described by several groups. Our group has demonstrated that IgG antibodies purified from AD patients can modulate cytokine production by thymic T cells. Here we aimed to investigate if IgG from AD patients can modulate infant non-atopic thymic iNKT cells cytokine production in order to collaborate with the elucidation of AD development in infancy. Methods Thymic tissues were obtained from children from non-atopic mothers, and IgG was purified from AD patients diagnosed as moderate or severe and, as controls, from subjects clinically classified as non-atopic individuals. PBMCs from non-atopic individuals were also used in this study. Results Our results demonstrated that IgG from AD patients could induce non-atopic children thymic iNKT cells to produce higher levels of intracellular IL-4, IL-10, and IL-17 when compared to all control conditions. No effect was observed in non-atopic adults peripheral iNKT. We also observed that IgG from AD patients induces an increase in the expression of CD4 and Ror gamma t transcription factor in non-atopic children thymic iNKT cells compared to the condition of all controls. Conclusions These observations suggest that IgG from AD patients can induce a cytokine profile by thymic iNKT cells from non-atopic infants compatible with the observations in AD development, which can collaborate with the elucidation of AD pathogenesis. (AU)

• Processo FAPESP: 18/05181-7 - Avaliação translacional do efeito modulador e/ou regulador dos anticorpos IgG na maturação de linfócitos TCD4, TCD8, nTreg, Tgammadelta e B intra-tímicos de neonatos.
• Beneficiário: Alberto José da Silva Duarte
• Modalidade de apoio: Auxílio à Pesquisa - Regular