miR-3934 regulates the apoptosis and secretion of inflammatory cytokines of basophils via targeting RAGE in asthma

Authors：Dou, Liyan; Wang, Wenyu; Wang, Junwei; Zhang, Xiaofei; Hu, Xiaoman; Zheng, Weili; Wang, Guangyou^*; Han, Kaiyu^*

Source：Allergy Asthma and Clinical Immunology, 2022, 18(1): 66.

DOI：10.1186/s13223-022-00704-z

• Asthma
• miR-3934
• Basophils
• Inflammatory cytokines
• TGF-beta/Smad signaling pathway

Background: Several miRNAs are now known to have clear connections to the pathogenesis of asthma. The present study focused on the potential role of miR-3934 during asthma development. @@@ Methods: miR-3934 was detected as a down-regulated miRNA in basophils by sequencing analysis. Next, the expression levels of miR-3934 in peripheral blood mononuclear cells of 50 asthma patients and 50 healthy volunteers were examined by RT-qPCR methods. The basophils were then treated with AGEs and transfected with miR-3934 mimics. The apoptosis levels were examined by flow cytometry assay; and the expression levels of cytokines were detected using the ELISA kits. Finally, the Western blot was performed to examined the expression of key molecules in the TGF-beta/Smad signaling pathway. @@@ Results: miR-3934 was down-regulated in the basophils of asthmatic patients. The expression of the pro-inflammatory cytokines IL-6, IL-8 and IL-33 was enhanced in basophils from asthmatic patients, and this effect was partially reversed by transfection of miR-3934 mimics. Furthermore, receiver operating characteristics analysis showed that miR-3934 levels can be used to distinguish asthma patients from healthy individuals. miR-3934 partially inhibited advanced glycation end products-induced increases in basophil apoptosis by suppressing expression of RAGE. @@@ Conclusion: Our results indicate that miR-3934 acts to mitigate the pathogenesis of asthma by targeting RAGE and suppressing TGF-beta/Smad signaling.

• Institution
  哈尔滨医科大学