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Article Publish Status: FREE
Abstract Title:

Cordyceps Militaris Alleviates Severity of Murine Acute Lung Injury Through miRNAs-Mediated CXCR2 Inhibition.

Abstract Source:

Cell Physiol Biochem. 2015 ;36(5):2003-11. Epub 2015 Jul 17. PMID: 26202360

Abstract Author(s):

Sheng Liu, Jian Tang, Lei Huang, Qirong Xu, Xiang Ling, Jichun Liu

Article Affiliation:

Sheng Liu

Abstract:

BACKGROUND/AIMS: Acute lung injury (ALI) and acute respiratory distress syndrome (ARDS) are lethal diseases in humans, and the current treatments have limited therapeutic effects. Cordyceps militaris (CM) is a caterpillar-grown traditional medicinal mushroom, and has been used as a natural invigorant for longevity, endurance, and vitality in China. Recently, purified extracts from CM have been shown to have beneficial effects on various diseases including cancer. Nevertheless, a role of CM in ALI has not been examined previously.

METHODS: Here, we used a bleomycin-induced ALI model to study the effects of CM on the severity of ALI in mice. The levels of CXCR2, a receptor for Interleukin 8 (IL-8) in pulmonary microvascular endothelial cells, were examined in different experimental groups. The levels of microRNA (miR)-1321 and miR-3188 were also examined in lung samples and in CM. Adeno-associated viruses carrying miR-1321 and miR-3188 were injected into bleomycin-treated mice for evaluation their effects on the severity of ALI.

RESULTS: CM treatment significantly alleviated the severity of bleomycin-induced ALI in mice. The increases in lung CXCR2 by bleomycin were significantly reduced by CM at protein level, but not at mRNA level. CM contained high levels of 2 miRNAs (miR-1321 and miR-3188) that target 3'-UTR of CXCR2 mRNA to inhibit its expression. Overexpression of miR-1321 and miR-3188 in mouse lung through AAV-mediated gene therapy mimicked the effects of CM.

CONCLUSION: CM may alleviate severity of murine ALI through miRNAs-mediated CXCR2 inhibition.© 2015 S. Karger AG, Basel.

Study Type : Animal Study

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