Effects of 2,3,7,8-Tetrachlorodibenzo-p-dioxin on T Cell Differentiation in Primary Biliary Cholangitis.

Abstract:

:Exposure to dioxins, such as 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), is reported to affect the autoimmune system and increase the risk of autoimmune disease. Generally, dioxin exerts its toxicity via aryl hydrocarbon receptor (AhR). Primary biliary cholangitis (PBC) is a chronic autoimmune disease, and its pathogenesis involves the interplay between immune and environmental factors. This study showed the effect of dendritic cells (DCs) activated by TCDD on naïve CD4+ T cell differentiation in patients with PBC. CD14+ mononuclear cells were isolated from peripheral blood mononuclear cells (PBMCs) of patients with PBC and healthy people by magnetic cell separation and introduced into DCs. Two days after stimulation by TCDD, DCs were cocultured with naïve CD4+ T cells in a ratio of 1 : 2 for 3 days. Then, differentiation-related factors for naïve CD4+ T cells were detected by real-time fluorescence quantitative polymerase chain reaction, enzyme-linked immunosorbent assay, and flow cytometry. The results showed that TCDD-activated DCs could promote Th1 and Th17 differentiation in patients with PBC. Therefore, this study demonstrated TCDD as an AhR agonist in regulating naïve CD4+ T cell differentiation in patients with PBC.

journal_name

Biomed Res Int

authors

She C,Wang J,Tang N,Liu Z,Xu L,Liu B

doi

10.1155/2020/1754975

subject

Has Abstract

pub_date

2020-08-24 00:00:00

pages

1754975

eissn

2314-6133

issn

2314-6141

journal_volume

2020

pub_type

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