The protective effect of tetrahedral framework nucleic acids on periodontium under inflammatory conditions  

作　　者：Mi Zhou Shaojingya Gao Xiaolin Zhang Tianxu Zhang Tao Zhang Taoran Tian Songhang Li Yunfeng Lin Xiaoxiao Cai 

机构地区：[1]State Key Laboratory of Oral Diseases,National Clinical Research Center for Oral Diseases,West China Hospital of Stomatology,Sichuan University,Chengdu,610041,China [2]College of Biomedical Engineering,Sichuan University,Chengdu,610041,China

出　　处：《Bioactive Materials》2021年第6期1676-1688,共13页生物活性材料（英文）

基　　金：This study was supported by National Key R&D Program of China(2019YFA0110600);National Natural Science Foundation of China(81970986,81771125).

摘　　要：Periodontitis is a common disease that causes periodontium defects and tooth loss.Controlling inflammation and tissue regeneration are two key strategies in the treatment of periodontitis.Tetrahedral framework nucleic acids can modulate multiple biological behaviors,and thus,their biological applications have been widely explored.In this study,we investigated the effect of tFNAs on periodontium under inflammatory conditions.Lipopolysaccharide and silk ligature were used to induce inflammation in vivo and in vitro.The results displayed that tFNAs decreased the release of pro-inflammatory cytokines and levels of cellular reactive oxygen species in periodontal ligament stem cells,which promoted osteogenic differentiation.Furthermore,animal experiments showed that tFNAs ameliorated the inflammation of the periodontium and protect periodontal tissue,especially reducing alveolar bone absorption by decreasing inflammatory infiltration and inhibiting osteoclast formation.These findings suggest that tFNAs can significantly improve the therapeutic effect of periodontitis and have the great potential significance in the field of periodontal tissue regeneration.

关 键 词：tFNAs PERIODONTITIS Nanomaterials ANTI-INFLAMMATION DNA nanotechnology PDLSCs 

分 类 号：R781.4[医药卫生—口腔医学] R318[医药卫生—临床医学]