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<p>Osteoarthritis (OA), affecting &gt; 500&#xa0;million people worldwide, profoundly affects the quality of life and ability to work. The mitogen-activated protein kinase (MAPK) signaling pathway plays an essential role in OA. To address the lack of studies focused on synovial cells in OA, we evaluated the expression patterns and roles of the MAPK signaling pathway components in OA synovial tissues using bioinformatics. The <i>JUN</i>, <i>MYC</i>, and <i>VEGFA</i> expression levels were significantly higher in the synovial tissues of patients with OA than in control tissues. These loci were closely related to abnormal proliferation, inflammation, and angiogenesis in the synovial tissues of patients with OA. We speculate that Myc and VEGFA activate the p38-MAPK signaling pathway to further activate Jun, thereby promoting abnormal inflammation, proliferation, and angiogenesis in OA synovial tissue. The high <i>MYC</i>, <i>JUN</i>, and <i>VEGFA</i> expression was positively correlated with the patients’ K-L score, pain time, and synovial score. Furthermore, the high p38-MAPK and P-p38-MAPK expression confirmed that the abnormal expression and activation of the MAPK signaling pathway occurred in the synovial tissue of patients with OA. Our findings may provide a new direction for the clinical diagnosis and treatment of OA and insights into its pathogenesis.</p>

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VEGFA, MYC, and JUN are abnormally elevated in the synovial tissue of patients with advanced osteoarthritis

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年1月15日

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  • Genxiang Rong,
  • Zhenyu Zhang,
  • Wenjing Zhan,
  • Minnan Chen,
  • Jingjing Ruan,
  • Cailiang Shen

摘要

Osteoarthritis (OA), affecting > 500 million people worldwide, profoundly affects the quality of life and ability to work. The mitogen-activated protein kinase (MAPK) signaling pathway plays an essential role in OA. To address the lack of studies focused on synovial cells in OA, we evaluated the expression patterns and roles of the MAPK signaling pathway components in OA synovial tissues using bioinformatics. The JUN, MYC, and VEGFA expression levels were significantly higher in the synovial tissues of patients with OA than in control tissues. These loci were closely related to abnormal proliferation, inflammation, and angiogenesis in the synovial tissues of patients with OA. We speculate that Myc and VEGFA activate the p38-MAPK signaling pathway to further activate Jun, thereby promoting abnormal inflammation, proliferation, and angiogenesis in OA synovial tissue. The high MYC, JUN, and VEGFA expression was positively correlated with the patients’ K-L score, pain time, and synovial score. Furthermore, the high p38-MAPK and P-p38-MAPK expression confirmed that the abnormal expression and activation of the MAPK signaling pathway occurred in the synovial tissue of patients with OA. Our findings may provide a new direction for the clinical diagnosis and treatment of OA and insights into its pathogenesis.