Phytomedicine : international journal of phytotherapy and phytopharmacology · 2024
Kunduan Yimu Decoction affected Th17/Treg balance through microRNA-124 to improve rheumatoid arthritis pathology.
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Xu Qiang, Shi Mei-Feng, Han Yu-Feng, Liu Min-Ying, Liu Xiao-Bao, Ma Xiao-Na, Feng Wei, Lin Chang-Song, Liu Qing-Ping
Аннотация
BACKGROUND: Rheumatoid arthritis (RA) is an autoimmune condition characterized by inflammation and the deterioration of joints. Current treatments often have side effects, highlighting the need for safer options. This study investigates the therapeutic effects of Kunduan Yimu Decoction (KDYMD) on RA, focusing on the role of miR-124 in regulating Th17/Treg differentiation.
METHODS: PBMCs from RA patients were analyzed before and after KDYMD treatment. RT-qPCR was used to measure the miR-124 expressions. Flow cytometry was used to assess the ratios of Th17 to Treg cells. ELISA was used to quantify the cytokine concentrations. The effects of KDYMD on JAK2/STAT3 signaling were evaluated by western blot analysis. A CIA mouse model was used to validate the in vivo effects of KDYMD.
RESULTS: MiR-124 expression was significantly upregulated in PBMCs of RA patients after KDYMD treatment. This upregulation was associated with increased Tip60 and Foxp3 expression and decreased RORγt expression. In the cytokine analysis, IL-1, IL-6, and IL-17A were decreased, and IL-10 and TGF- were increased after treatment. Flow cytometry showed a restoration of the Th17/Treg balance, with a decrease in Th17 and an increase in Treg cells. In vivo, KDYMD treatment ameliorated ankle swelling and arthritis index in CIA mice, comparable to methotrexate (MTX). In addition, KDYMD modulated JAK2/STAT3 signaling and enhanced anti-inflammatory responses.
CONCLUSIONS: KDYMD exerts significant anti-inflammatory effects in RA by upregulating miR-124, which in turn regulates Th17/Treg differentiation and modulates JAK2/STAT3 signaling. A novel mechanism involving miR-124 and immune cell balance suggests KDYMD could be a promising therapeutic agent for RA.
METHODS: PBMCs from RA patients were analyzed before and after KDYMD treatment. RT-qPCR was used to measure the miR-124 expressions. Flow cytometry was used to assess the ratios of Th17 to Treg cells. ELISA was used to quantify the cytokine concentrations. The effects of KDYMD on JAK2/STAT3 signaling were evaluated by western blot analysis. A CIA mouse model was used to validate the in vivo effects of KDYMD.
RESULTS: MiR-124 expression was significantly upregulated in PBMCs of RA patients after KDYMD treatment. This upregulation was associated with increased Tip60 and Foxp3 expression and decreased RORγt expression. In the cytokine analysis, IL-1, IL-6, and IL-17A were decreased, and IL-10 and TGF- were increased after treatment. Flow cytometry showed a restoration of the Th17/Treg balance, with a decrease in Th17 and an increase in Treg cells. In vivo, KDYMD treatment ameliorated ankle swelling and arthritis index in CIA mice, comparable to methotrexate (MTX). In addition, KDYMD modulated JAK2/STAT3 signaling and enhanced anti-inflammatory responses.
CONCLUSIONS: KDYMD exerts significant anti-inflammatory effects in RA by upregulating miR-124, which in turn regulates Th17/Treg differentiation and modulates JAK2/STAT3 signaling. A novel mechanism involving miR-124 and immune cell balance suggests KDYMD could be a promising therapeutic agent for RA.