Long non-coding RNA 01126 activates IL-6/JAK2/STAT3 pathway via serving as a sponge of miR-655-3p in periodontitis

Abstract

Background Periodontitis is a serious threat to oral quality of life and overall health. Although our previous studies confirmed that long intergenic non-coding RNA 01126 (LINC01126) is aberrantly expressed in periodontitis tissues, there are few reports on the pathogenesis of LINC01126 in periodontitis. Our study investigated the biological functions of LINC01126 in periodontitis and the potential mechanism. Results An inflammatory model of human gingival fibroblasts (HGFs) was successfully established. LINC01126 silencing can alleviate lipopolysaccharide (LPS) induced cell inflammation, reduce cell apoptosis, and promote cell migration. As a "sponge" for miR-655-3p, LINC01126 inhibits its binding to mRNA of IL-6, thereby promoting inflammation progression and JAK2/STAT3 pathway activation. qRT- PCR, WB, and IHC results of clinical tissue samples further confirmed that miR-655-3p expression was down-regulated and IL-6/JAK/STAT3 was abnormally activated in periodontitis tissues. Conclusions Our results indicate that LINC01126, as an endogenous competitive RNA (ceRNA) of miR-655-3p, can promote IL-6/JAK3/STAT3 pathway activation, thereby promoting periodontitis pathogenesis. And this is the first study of miR-655-3p in inflammatory periodontal diseases. Our study reveales a new pathogenesis of periodontitis, and provides a new strategy for preventing and treating periodontitis.