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  • Open Access

    ARTICLE

    Effect of Peroxiredoxin 1 on the biological function of airway epithelial cells and epithelial-mesenchymal transition

    HUOGEN LIU#, YUNDI SHI#, XIN WAN, YING LIU, HAILIN SHU, FENGMING HUANG, ZHENBIN GONG, LING GU*

    BIOCELL, Vol.46, No.12, pp. 2671-2680, 2022, DOI:10.32604/biocell.2022.018054 - 10 August 2022

    Abstract Peroxiredoxin 1 (PRDX1) participates in tumor cell proliferation, apoptosis, migration, invasion, and the epithelial-to-mesenchymal transition (EMT). This study aimed to investigate the effect of PRDX1 on the EMT of airway epithelial cells stimulated with lipopolysaccharide (LPS) and transforming growth factor-beta 1 (TGF-β1). PRDX1 overexpression significantly increased the proliferation and migration of human bronchial epithelial (BEAS-2B) cells, reduced cell apoptosis (p < 0.01), and induced EMT and collagen deposition by upregulating the expression of the matrix metallopeptidase (MMP)2, MMP9, α-smooth muscle actin (α-SMA), N-cadherin, vimentin and twist proteins and inhibiting E-cadherin expression (p < 0.05). PRDX1 overexpression More >

  • Open Access

    ARTICLE

    Roles of ROS/TACE in neutrophil elastase-induced mucus hypersecretion in NCI-H292 airway epithelial cells

    Li Qi, Zhou Xiangdong, Yu Hongmei, Nie Xiaohong, Xu Xiaoyan

    European Cytokine Network, Vol.21, No.3, pp. 177-185, 2010, DOI:10.1684/ecn.2010.0195

    Abstract Complications arise in chronic obstructive pulmonary diseases (COPD) with excessive mucus pro-duction, especially during the exacerbation period, which contributes to airway blockage and bacterial infection. Neutrophil elastase (NE) is detected at high levels in airway secretions, and is the primary inducer of mucin production. Understanding the mechanism of NE-induced overproduction of mucin may lead to new therapies for COPD. It is known that activation of epidermal growth factor receptor (EGFR) and its downstream signal-ing cascade are involved in mucin production. However, the mechanism of NE-induced EGFR activation remains unclear. Tumor necrosis factor-α-converting enzyme (TACE) cleaves More >

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