ReferenceID 5371
Glycyrrhizin mitigates radiation-induced acute lung injury by inhibiting the HMGB1/TLR4 signalling pathway
J Cell Mol Med
Radiation-induced lung injury (RILI) is the major complication of thoracic radiation therapy, and no effective treatment is available. This study explored the role of high-mobility group box 1 (HMGB1) in acute RILI and t
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Record Fields
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- Reference Id
- 5371
- Evidence Id
- 21961
- Core Evidence Id
- 21961
- Source Reference Id
- 3989
- Herb2 Reference Id
- HBREF004786
- Subject Paper Key
- HBIN028177_31657123
- Pubmed Id
- 31657123
- Doi
- 10.1111/jcmm.14703
- Paper Title
- Glycyrrhizin mitigates radiation-induced acute lung injury by inhibiting the HMGB1/TLR4 signalling pathway
- Paper Abstract
- Radiation-induced lung injury (RILI) is the major complication of thoracic radiation therapy, and no effective treatment is available. This study explored the role of high-mobility group box 1 (HMGB1) in acute RILI and the therapeutic effect of glycyrrhizin, an inhibitor of HMGB1, on RILI. C57BL/6 mice received a 20 Gy dose of X-ray radiation to the whole thorax with or without administration of glycyrrhizin. Severe lung inflammation was present 12 weeks after irradiation, although only a mild change was noted at 2 weeks and could be alleviated by administration of glycyrrhizin. Glycyrrhizin decreased the plasma concentrations of HMGB1 and sRAGE as well as TNF-alpha, IL-1beta and IL-6 levels in the bronchoalveolar lavage fluid (BALF). The expression of RAGE was decreased while that of TLR4 was significantly increased at 12 weeks, but not 2 weeks, after irradiation in mouse lung tissue. In vitro, the expression of TLR4 increased in RAW 264.7 cells after conditioning with the supernatant from the irradiated MLE-12 cells containing HMGB1 but showed no change when conditioned medium without HMGB1 was used. However, conditioned culture had no effect on RAGE expression in RAW 264.7 cells. Glycyrrhizin also inhibited the related downstream transcription factors of HMGB/TLR4, such as NF-kappaB, JNK and ERK1/2, in lung tissue and RAW 264.7 cells when TLR4 was activated. In conclusion, the HMGB1/TLR4 pathway mediates RILI and can be mitigated by glycyrrhizin.
- Journal
- J Cell Mol Med
- Publish Year
- 2020
- Experiment Subject
- mouse; irradiated mle-12 cells; raw 264.7 cells
- Experiment Type
- Animal Experiment
- Phenotype Related
- Thoracic Radiation; Severe Lung Inflammation; Radiation-induced Lung Injury
- Paper Title Cn
- Paper Title En
- Glycyrrhizin mitigates radiation-induced acute lung injury by inhibiting the HMGB1/TLR4 signalling pathway
- Bilingual Status
- semi_complete