Brevilin A, a novel LRRC15 inhibitor, exerts potent anti-rheumatoid arthritis effects by inhibiting the LRRC15/STAT3 signaling pathway

Abstract Purpose Leucine-rich repeat-containing 15 (LRRC15) is a transmembrane protein that is highly expressed in the synovium of patients with rheumatoid arthritis (RA). Brevilin A (BrA), an active compound isolated from Centipeda minima, exerts potent anti-inflammatory effects. However, the anti-...

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Main Authors: Zhiping Qiao, Qiqi Meng, Bixia Xiao, Yulei Long, Qi Liang, Tao Su
Format: Article
Language:English
Published: BMC 2025-08-01
Series:Arthritis Research & Therapy
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Online Access:https://doi.org/10.1186/s13075-025-03629-1
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author Zhiping Qiao
Qiqi Meng
Bixia Xiao
Yulei Long
Qi Liang
Tao Su
author_facet Zhiping Qiao
Qiqi Meng
Bixia Xiao
Yulei Long
Qi Liang
Tao Su
author_sort Zhiping Qiao
collection DOAJ
description Abstract Purpose Leucine-rich repeat-containing 15 (LRRC15) is a transmembrane protein that is highly expressed in the synovium of patients with rheumatoid arthritis (RA). Brevilin A (BrA), an active compound isolated from Centipeda minima, exerts potent anti-inflammatory effects. However, the anti-RA effect of BrA and its underlying mechanism of action of BrA have not been fully elucidated. Methods Transcriptome analysis was performed to explore biomarkers of RA. An lipopolysaccharide (LPS)-induced RAW264.7 macrophage model, a TNF-α-stimulated RA fibroblast-like synoviocytes (RA-FLSs) model, as well as a collagen-induced arthritis (CIA) rat model were used to explore the anti-RA effects of BrA. Moreover, inhibition or overexpression of LRRC15 was performed to explore the role of LRRC15 signaling in the anti-RA effects of BrA. Results Transcriptome analysis of patients with RA revealed that LRRC15 expression was significantly upregulated in the synovial tissue of RA patients. BrA significantly downregulated the expression of inflammation-related markers in cell models, and inhibited their proliferation and migration; Moreover, it significantly reduced joint swelling and cartilage damage in CIA rats. Further mechanistic studies suggest that inhibition of LRRC15 inhibits cell proliferation and migration; and overexpression of LRRC15 increases the protein levels of STAT3’s downstream metastasis-related markers. Conclusions Our findings suggest that BrA, a novel LRRC15 inhibitor, has promising anti-RA activity and potently inhibits LRRC15/STAT3 signaling pathway both in vivo and in vitro. This study not only supports the development of BrA as a novel therapeutic agent for RA treatment, but also paves the way for the development of other LRRC15-targeting therapeutic strategies.
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spelling doaj-art-e8da4dda7b704da786e47fce7dc18ca72025-08-24T11:42:17ZengBMCArthritis Research & Therapy1478-63622025-08-0127111310.1186/s13075-025-03629-1Brevilin A, a novel LRRC15 inhibitor, exerts potent anti-rheumatoid arthritis effects by inhibiting the LRRC15/STAT3 signaling pathwayZhiping Qiao0Qiqi Meng1Bixia Xiao2Yulei Long3Qi Liang4Tao Su5State Key Laboratory of Traditional Chinese Medicine Syndrome, Guangdong Key Laboratory for Translational Cancer Research of Chinese Medicine, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese MedicineState Key Laboratory of Traditional Chinese Medicine Syndrome, Guangdong Key Laboratory for Translational Cancer Research of Chinese Medicine, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese MedicineState Key Laboratory of Traditional Chinese Medicine Syndrome, Guangdong Key Laboratory for Translational Cancer Research of Chinese Medicine, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese MedicineState Key Laboratory of Traditional Chinese Medicine Syndrome, Guangdong Key Laboratory for Translational Cancer Research of Chinese Medicine, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese MedicineDepartment of Pharmacy, Shenzhen Bao’an Traditional Chinese Medicine Hospital, Guangzhou University of Chinese MedicineState Key Laboratory of Traditional Chinese Medicine Syndrome, Guangdong Key Laboratory for Translational Cancer Research of Chinese Medicine, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese MedicineAbstract Purpose Leucine-rich repeat-containing 15 (LRRC15) is a transmembrane protein that is highly expressed in the synovium of patients with rheumatoid arthritis (RA). Brevilin A (BrA), an active compound isolated from Centipeda minima, exerts potent anti-inflammatory effects. However, the anti-RA effect of BrA and its underlying mechanism of action of BrA have not been fully elucidated. Methods Transcriptome analysis was performed to explore biomarkers of RA. An lipopolysaccharide (LPS)-induced RAW264.7 macrophage model, a TNF-α-stimulated RA fibroblast-like synoviocytes (RA-FLSs) model, as well as a collagen-induced arthritis (CIA) rat model were used to explore the anti-RA effects of BrA. Moreover, inhibition or overexpression of LRRC15 was performed to explore the role of LRRC15 signaling in the anti-RA effects of BrA. Results Transcriptome analysis of patients with RA revealed that LRRC15 expression was significantly upregulated in the synovial tissue of RA patients. BrA significantly downregulated the expression of inflammation-related markers in cell models, and inhibited their proliferation and migration; Moreover, it significantly reduced joint swelling and cartilage damage in CIA rats. Further mechanistic studies suggest that inhibition of LRRC15 inhibits cell proliferation and migration; and overexpression of LRRC15 increases the protein levels of STAT3’s downstream metastasis-related markers. Conclusions Our findings suggest that BrA, a novel LRRC15 inhibitor, has promising anti-RA activity and potently inhibits LRRC15/STAT3 signaling pathway both in vivo and in vitro. This study not only supports the development of BrA as a novel therapeutic agent for RA treatment, but also paves the way for the development of other LRRC15-targeting therapeutic strategies.https://doi.org/10.1186/s13075-025-03629-1Rheumatoid arthritisBrevilin ARheumatoid arthritis-fibroblast-like synoviocyteLRRC15STAT3
spellingShingle Zhiping Qiao
Qiqi Meng
Bixia Xiao
Yulei Long
Qi Liang
Tao Su
Brevilin A, a novel LRRC15 inhibitor, exerts potent anti-rheumatoid arthritis effects by inhibiting the LRRC15/STAT3 signaling pathway
Arthritis Research & Therapy
Rheumatoid arthritis
Brevilin A
Rheumatoid arthritis-fibroblast-like synoviocyte
LRRC15
STAT3
title Brevilin A, a novel LRRC15 inhibitor, exerts potent anti-rheumatoid arthritis effects by inhibiting the LRRC15/STAT3 signaling pathway
title_full Brevilin A, a novel LRRC15 inhibitor, exerts potent anti-rheumatoid arthritis effects by inhibiting the LRRC15/STAT3 signaling pathway
title_fullStr Brevilin A, a novel LRRC15 inhibitor, exerts potent anti-rheumatoid arthritis effects by inhibiting the LRRC15/STAT3 signaling pathway
title_full_unstemmed Brevilin A, a novel LRRC15 inhibitor, exerts potent anti-rheumatoid arthritis effects by inhibiting the LRRC15/STAT3 signaling pathway
title_short Brevilin A, a novel LRRC15 inhibitor, exerts potent anti-rheumatoid arthritis effects by inhibiting the LRRC15/STAT3 signaling pathway
title_sort brevilin a a novel lrrc15 inhibitor exerts potent anti rheumatoid arthritis effects by inhibiting the lrrc15 stat3 signaling pathway
topic Rheumatoid arthritis
Brevilin A
Rheumatoid arthritis-fibroblast-like synoviocyte
LRRC15
STAT3
url https://doi.org/10.1186/s13075-025-03629-1
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AT qiqimeng brevilinaanovellrrc15inhibitorexertspotentantirheumatoidarthritiseffectsbyinhibitingthelrrc15stat3signalingpathway
AT bixiaxiao brevilinaanovellrrc15inhibitorexertspotentantirheumatoidarthritiseffectsbyinhibitingthelrrc15stat3signalingpathway
AT yuleilong brevilinaanovellrrc15inhibitorexertspotentantirheumatoidarthritiseffectsbyinhibitingthelrrc15stat3signalingpathway
AT qiliang brevilinaanovellrrc15inhibitorexertspotentantirheumatoidarthritiseffectsbyinhibitingthelrrc15stat3signalingpathway
AT taosu brevilinaanovellrrc15inhibitorexertspotentantirheumatoidarthritiseffectsbyinhibitingthelrrc15stat3signalingpathway