Effects of adenovirus-mediated knockdown of IRAK4 on synovitis in the osteoarthritis rabbit model

Abstract Background The use of interleukin-1 receptor-associated kinase 4 (IRAK4) inhibitor as a treatment for the inflammatory joint disease is a promising method. However, its underlying mechanism in osteoarthritis (OA) remains unclear. The purpose of this study is to look into the effects of aden...

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Autores principales: Muzhe Li, Huiyun Li, Xun Ran, Han Yin, Xuling Luo, Zhiwei Chen
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Publicado: BMC 2021
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spelling oai:doaj.org-article:ca00de771fcc430db4ae7f2cef7031022021-12-05T12:04:46ZEffects of adenovirus-mediated knockdown of IRAK4 on synovitis in the osteoarthritis rabbit model10.1186/s13075-021-02684-81478-6362https://doaj.org/article/ca00de771fcc430db4ae7f2cef7031022021-12-01T00:00:00Zhttps://doi.org/10.1186/s13075-021-02684-8https://doaj.org/toc/1478-6362Abstract Background The use of interleukin-1 receptor-associated kinase 4 (IRAK4) inhibitor as a treatment for the inflammatory joint disease is a promising method. However, its underlying mechanism in osteoarthritis (OA) remains unclear. The purpose of this study is to look into the effects of adenovirus-mediated knockdown of IRAK4 on synovitis in the OA rabbit model. Methods Ad-shIRAK4 was injected two weeks after anterior cruciate ligament resection. Six weeks later, the rabbits were killed. The expression of IRAK4, TNFR-associated factor 6(TRAF6), TGF-activated kinase 1(TAK1), p-IKB kinase (p-IKK), p-nuclear factor kappa-B (p-NFκB), p38, and p-p38 in the synovial membrane was detected by western blot, qRT-PCR, and immunohistochemistry analysis. Immunohistochemistry was to detect the expression of IRAK4 proteins in articular cartilage. H&E staining was to assess the pathological changes of synovium and cartilage. The levels of interleukin (IL)-1β, tumor necrosis factor-α(TNF-α), and MMP-13 in the synovial fluid were measured by ELISA. X-ray and micro-computerized tomography (μCT) scans were used to assess knee joint conditions and microstructure of subchondral bone. Results IRAK4 expression levels in synovial tissues of the OA model group exhibited a significant upward trend. Ad-shIRAK4 significantly reduced IRAK4 mRNA expression in synovium tissues. Notably, Ad-shIRAK4 suppressed the Toll-like receptor/interleukin-1 receptor (TLR/IL-1R) signaling. In addition, in the Ad-shIRAK4 treatment group, we can see less inflammatory cell infiltration and reduced hyperplasia and angiogenesis. The levels of IL-1β, TNF-α, and MMP-13 in the synovial fluid in the OA model group were significantly higher than that in the control group, which were reduced by Ad-shIRAK4 treatment. Finally, Results of HE stains, immunohistochemistry, and μCT showed that Ad-shIRAK4 treatment has a protective effect on cartilage damage. Conclusions IRAK4 is significantly upregulated in the synovium from the osteoarthritis rabbit model. In addition, Ad-shIRAK4 reduced the expression of IRAK4 and suppressed TLR/IL-1R signaling in the synovium from the osteoarthritis rabbit model. Ad-shIRAK4 could alleviate synovitis and cartilage degradation in the osteoarthritis rabbit model, and thus alleviate the symptoms of OA and prevent the progression of OA. Graphical abstractMuzhe LiHuiyun LiXun RanHan YinXuling LuoZhiwei ChenBMCarticleInterleukin-1 receptor-associated kinase 4SynovitisOsteoarthritisToll-like receptor/IL-1 receptorInflammationDiseases of the musculoskeletal systemRC925-935ENArthritis Research & Therapy, Vol 23, Iss 1, Pp 1-12 (2021)
institution DOAJ
collection DOAJ
language EN
topic Interleukin-1 receptor-associated kinase 4
Synovitis
Osteoarthritis
Toll-like receptor/IL-1 receptor
Inflammation
Diseases of the musculoskeletal system
RC925-935
spellingShingle Interleukin-1 receptor-associated kinase 4
Synovitis
Osteoarthritis
Toll-like receptor/IL-1 receptor
Inflammation
Diseases of the musculoskeletal system
RC925-935
Muzhe Li
Huiyun Li
Xun Ran
Han Yin
Xuling Luo
Zhiwei Chen
Effects of adenovirus-mediated knockdown of IRAK4 on synovitis in the osteoarthritis rabbit model
description Abstract Background The use of interleukin-1 receptor-associated kinase 4 (IRAK4) inhibitor as a treatment for the inflammatory joint disease is a promising method. However, its underlying mechanism in osteoarthritis (OA) remains unclear. The purpose of this study is to look into the effects of adenovirus-mediated knockdown of IRAK4 on synovitis in the OA rabbit model. Methods Ad-shIRAK4 was injected two weeks after anterior cruciate ligament resection. Six weeks later, the rabbits were killed. The expression of IRAK4, TNFR-associated factor 6(TRAF6), TGF-activated kinase 1(TAK1), p-IKB kinase (p-IKK), p-nuclear factor kappa-B (p-NFκB), p38, and p-p38 in the synovial membrane was detected by western blot, qRT-PCR, and immunohistochemistry analysis. Immunohistochemistry was to detect the expression of IRAK4 proteins in articular cartilage. H&E staining was to assess the pathological changes of synovium and cartilage. The levels of interleukin (IL)-1β, tumor necrosis factor-α(TNF-α), and MMP-13 in the synovial fluid were measured by ELISA. X-ray and micro-computerized tomography (μCT) scans were used to assess knee joint conditions and microstructure of subchondral bone. Results IRAK4 expression levels in synovial tissues of the OA model group exhibited a significant upward trend. Ad-shIRAK4 significantly reduced IRAK4 mRNA expression in synovium tissues. Notably, Ad-shIRAK4 suppressed the Toll-like receptor/interleukin-1 receptor (TLR/IL-1R) signaling. In addition, in the Ad-shIRAK4 treatment group, we can see less inflammatory cell infiltration and reduced hyperplasia and angiogenesis. The levels of IL-1β, TNF-α, and MMP-13 in the synovial fluid in the OA model group were significantly higher than that in the control group, which were reduced by Ad-shIRAK4 treatment. Finally, Results of HE stains, immunohistochemistry, and μCT showed that Ad-shIRAK4 treatment has a protective effect on cartilage damage. Conclusions IRAK4 is significantly upregulated in the synovium from the osteoarthritis rabbit model. In addition, Ad-shIRAK4 reduced the expression of IRAK4 and suppressed TLR/IL-1R signaling in the synovium from the osteoarthritis rabbit model. Ad-shIRAK4 could alleviate synovitis and cartilage degradation in the osteoarthritis rabbit model, and thus alleviate the symptoms of OA and prevent the progression of OA. Graphical abstract
format article
author Muzhe Li
Huiyun Li
Xun Ran
Han Yin
Xuling Luo
Zhiwei Chen
author_facet Muzhe Li
Huiyun Li
Xun Ran
Han Yin
Xuling Luo
Zhiwei Chen
author_sort Muzhe Li
title Effects of adenovirus-mediated knockdown of IRAK4 on synovitis in the osteoarthritis rabbit model
title_short Effects of adenovirus-mediated knockdown of IRAK4 on synovitis in the osteoarthritis rabbit model
title_full Effects of adenovirus-mediated knockdown of IRAK4 on synovitis in the osteoarthritis rabbit model
title_fullStr Effects of adenovirus-mediated knockdown of IRAK4 on synovitis in the osteoarthritis rabbit model
title_full_unstemmed Effects of adenovirus-mediated knockdown of IRAK4 on synovitis in the osteoarthritis rabbit model
title_sort effects of adenovirus-mediated knockdown of irak4 on synovitis in the osteoarthritis rabbit model
publisher BMC
publishDate 2021
url https://doaj.org/article/ca00de771fcc430db4ae7f2cef703102
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AT hanyin effectsofadenovirusmediatedknockdownofirak4onsynovitisintheosteoarthritisrabbitmodel
AT xulingluo effectsofadenovirusmediatedknockdownofirak4onsynovitisintheosteoarthritisrabbitmodel
AT zhiweichen effectsofadenovirusmediatedknockdownofirak4onsynovitisintheosteoarthritisrabbitmodel
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