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- W2765788052 abstract "Pulmonary fibrosis (PF) is a chronic, fibrosing interstitial pneumonia and devastating disease. Here we investigated the potential roles of Kruppel-like factor 2 (KLF2) on pulmonary fibrosis and inflammation response. A mouse model of pulmonary fibrosis was established by intratracheal injection of bleomycin (BLM). The mRNA and protein levels of KLF2 were assayed by RT-PCR and Western blotting respectively. The extent of lung fibrosis was determined using hematoxylin and eosin (HE) staining and Masson's trichrome staining, and the hydroxyproline content was quantified. RT-PCR was used to evaluate the mRNA expression of collagen type 1a1 (col1a1), col3a1, α-SMA, TNF-α, IL-1β and IL-6. The concentrations of TNF-α, IL-1β, and IL-6 in bronchoalveolar lavage fluid (BALF) and lung tissue were examined by ELISA. Also, the effects of KLF2 on activator protein-1 (AP-1) were evaluated by measuring the c-Jun and c-Fos protein levels. We found that KLF2 was remarkably downregulated in BLM-treated rats, both in mRNA and protein levels. Additionally, overexpression of KLF2 attenuated the destruction of the alveolar space and pulmonary interstitial collagen hyperplasia, and deposition reduced the expression of col1a1, col3a1, and α-SMA, and blocked the production of TNF-α, IL-1β, and IL-6 in BALF and lung tissue in vivo. Moreover, adenoviral transduction of KLF2 inhibited TGF-β1-induced expression of col1a1, col3a1, and α-SMA in vitro. Mechanically, BLM up-regulated c-Jun and c-Fos expression, which was impeded by KLF2 overexpression. Taken together, our data indicate that KLF2 attenuates pulmonary fibrosis and inflammation, possibly through the regulation of AP-1." @default.
- W2765788052 created "2017-11-10" @default.
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- W2765788052 date "2018-01-01" @default.
- W2765788052 modified "2023-10-16" @default.
- W2765788052 title "KLF2 attenuates bleomycin-induced pulmonary fibrosis and inflammation with regulation of AP-1" @default.
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- W2765788052 doi "https://doi.org/10.1016/j.bbrc.2017.10.114" @default.
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