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MicroRNA let-7a up-regulates OPN expression in a mouse model of allergic rhinitis

Published online by Cambridge University Press:  15 August 2017

H Yu ,
H Sun ,
Z Wang  and
Y Liu
H Yu
Affiliation:
Department of Infectious Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P R China
H Sun
Affiliation:
Department of Otorhinolaryngology, Huazhong University of Science and Technology, Wuhan, P R China
Z Wang
Affiliation:
Department of Otolaryngology – Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P R China
Y Liu*
Affiliation:
Department of Otolaryngology – Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P R China
*
Address for correspondence: Dr Yang Liu, Department of Otolaryngology – Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan 430030, P R China E-mail: [email protected]
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Abstract

Objective:

To investigate the effect of microRNA let-7a on OPN expression in a mouse model of allergic rhinitis.

Methods:

Thirty-two mature female C57BL/6 mice were randomly divided into four groups, with eight mice in each group: microRNA let-7a, microRNA control, OVA and phosphate-buffered saline groups. The microRNA let-7a, microRNA control and OVA groups were sensitised with OVA to establish a mouse model of allergic rhinitis. Nose-scratching events were counted. Nasal mucosa was used to evaluate histological changes of goblet cell hyperplasia. Interleukins 5 and 13 were detected. Interferon-γ levels in the nasal lavage fluid were assayed with enzyme-linked immunosorbent assay. OPN expression was estimated with polymerase chain reaction.

Results:

Compared with microRNA control mice, microRNA let-7a treated mice had a significantly increased number of nose-scratching events, nasal mucosal eosinophilia and goblet cell hyperplasia (p < 0.05), and significantly higher interleukins 5 and 13 in nasal mucosa (p < 0.05), but there was no significant difference in interferon-γ (p > 0.05). In addition, microRNA let-7a treated mice had significantly enhanced OPN expression in nasal mucosa (p < 0.05).

Conclusion:

MicroRNA let-7a can promote allergic rhinitis development partly by regulating OPN expression.

Keywords

MicroRNAAllergic RhinitisNasal MucosaOsteopontin
Type
Main Articles
Information
The Journal of Laryngology & Otology , Volume 131 , Issue 11 , November 2017 , pp. 955 - 960
Copyright
Copyright © JLO (1984) Limited 2017 

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