ArticleJournal of inflammation (London, England)2016
Effects of CpG Oligodeoxynucleotide 1826 on transforming growth factor-beta 1 and radiation-induced pulmonary fibrosis in mice.
Article in Journal of inflammation (London, England), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 6 citations in OpenAlex.
- The Preventive Effect of Endostar on Radiation-induced Pulmonary Fibrosis.Current molecular medicine · 2024Article
- Pirfenidone modulates macrophage polarization and ameliorates radiation-induced lung fibrosis by inhibiting the TGF-β1/Smad3 pathway.Journal of cellular and molecular medicine · 2021Article
- Scarred Lung. An Update on Radiation-Induced Pulmonary Fibrosis.Frontiers in medicine · 2020Review
- Advances in Molecular Mechanisms and Treatment of Radiation-Induced Pulmonary Fibrosis.Translational oncology · 2019Review
- Modeling DNA damage-induced pneumopathy in mice: insight from danger signaling cascades.Radiation oncology (London, England) · 2017Review
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Authors and funding
7 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundCytosine-phosphate-guanine (CpG) oligodeoxyribonucleotides (ODNs) are synthetic DNA fragments containing unmethylated cytosine-guanine motifs with potential immune modulatory effects and have recently been suggested to enhance sensitivity to traditional therapies in lung cancer. This study aimed to examine the effects of CpG ODN1826 on transforming growth factor-beta 1(TGF-β1) and radiation-induced pulmonary fibrosis in mice.
methodsThe radiation-induced pulmonary fibrosis mouse model was established by a single dose of 20 Gy, 6 MV X-rays exposure to the left lung. ICR mice were evenly randomized into four groups, comprising: a control group, a radiation group (RT group), a CpG group and a radiation combined with CpG ODN1826 group (RT + CpG group), with 40 mice in each group. CpG ODN1826 was intraperitoneally injected into mice at 1, 3, 5, 7 and 9 d post-irradiation. The mice were sacrificed at 1, 5, 15, 30 and 90 d post-irradiation. Paraffin sections of the radiated lung were subjected to H&E staining and Masson staining. The Ashcroft scale was used for quantitative histological analysis of fibrotic changes induced by irradiation. Concentrations of serum TGF-β1 were determined by ELISA, and concentrations of Hydroxyproline(Hyp) in the lung were determined with the alkaline hydrolysis method. Relative gene expression of FoxP3 was determined by real-time PCR.
resultsThe radiation-induced pulmonary fibrosis mouse model was successfully established. The serum concentrations of TGF -β1 of RT group were higher than those of the RT + CpG group (t = 5.212, 7.126, 7.972 and 3.785, P < 0.05). The Hyp in the lung of RT group was higher than that of RT + CpG group (t = 4.606, P < 0.05). The relative expressions of FoxP3 gene in the lung of the RT group were higher than those of RT + CpG group (t = 8.395, 5.099 and 6.147, P < 0.05).
conclusionsCpG ODN1826 could reduce the serum concentrations of TGF-β1 and the lung content of Hyp in radiation-induced pulmonary fibrosis, which might be related to the possibility that CpG ODN1826 can reduce expression of the FoxP3 gene.
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