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Published in: Archives of Dermatological Research 3/2023

30-08-2022 | Vulgar Psoriasis | Original Paper

Expression of B lymphocyte-induced maturation protein 1 (Blimp-1) in keratinocyte and cytokine signalling drives human Th17 response in psoriasis

Authors: Lorena Carla Oliveira da Costa, Luiz Gustavo Gardinassi, Flávio Protásio Veras, Cristiane Milanezi, Leandra Náira Zambelli Ramalho, Luciana Benevides, José Carlos Alves-Filho, João Santana da Silva, Cacilda da Silva Souza

Published in: Archives of Dermatological Research | Issue 3/2023

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Abstract

Transcriptional factor B lymphocyte-induced maturation protein 1 (Blimp-1) is pivotally implicated in T helper 17 (Th17) cell differentiation. This study investigated expression of the Blimp-1 protein, positive regulatory domain 1 (PRDM1), and cytokine genes in psoriasis (PsO). Affected (AS-PsO) and non-affected skin (nAS-PsO) samples were used to assess gene and protein expressions by reverse transcription-quantitative PCR (RT-qPCR), and immunostaining and confocal microscopy, respectively; the normalised public transcriptomic data permitted differential gene expression analyses. On RT-qPCR, PRDM1 and IL17A transcripts showed higher expression in AS-PsO than in nAS-PsO (n = 34) (p < 0.001; p < 0.0001, respectively). Confocal microscopy showed Blimp-1 protein expression in epidermal layer keratinocytes in AS-PsO, but not in nAS-PsO. Bioinformatic analysis of the transcriptomic dataset GSE13355 corroborated the increased PRDM1, signal transducer and activator of transcription 3 (STAT3), IL12B, TNF, IL17A, IL6, IL1B, IL22, and IL10 gene expression in AS-PsO, when compared to normal skin and nAS-PsO (p < 0.001). PRDM1 expression correlated positively (p < 0.0001) with that of IL17A (r = 0.7), IL1B (r = 0.67), IL12B (r = 0.6), IL6 (r = 0.59), IL22 (r = 0.53), IL23A (r = 0.47), IL21 (r = 0.47), IL27 (r = 0.34), IL23R (r = 0.32), S100 calcium binding protein A9 (r = 0.63), and lipocalin 2 (r = 0.50), and negatively with that of TGFB1 (r = − 0.28) and RORC (r = − 0.60). Blimp-1 may be critical in the pathogenesis of PsO dysregulation involving the Th17 inflammatory pathway. This knowledge may accelerate the development of new treatments.
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Metadata
Title
Expression of B lymphocyte-induced maturation protein 1 (Blimp-1) in keratinocyte and cytokine signalling drives human Th17 response in psoriasis
Authors
Lorena Carla Oliveira da Costa
Luiz Gustavo Gardinassi
Flávio Protásio Veras
Cristiane Milanezi
Leandra Náira Zambelli Ramalho
Luciana Benevides
José Carlos Alves-Filho
João Santana da Silva
Cacilda da Silva Souza
Publication date
30-08-2022
Publisher
Springer Berlin Heidelberg
Published in
Archives of Dermatological Research / Issue 3/2023
Print ISSN: 0340-3696
Electronic ISSN: 1432-069X
DOI
https://doi.org/10.1007/s00403-022-02379-3

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