MicroRNA-146a-loaded magnesium silicate nanospheres promote bone regeneration in an inflammatory microenvironmentOAMEDLINE
Reconstruction of irregular oral-maxillofacial bone defects with an inflammatory microenvironment remains a challenge,as chronic local inflammation can largely impair bone healing.Here,we used magnesium silicate nanospheres(MSNs)to load microRNA-146a-5p(miR-146a)to fabricate a nanobiomaterial,MSN+miR-146a,which showed synergistic promoting effects on the osteogenic differentiation of human dental pulp stem cells(hDPSCs).In addition,miR-146a exhibited an anti-inflammatory effect on mouse bone marrow-derived macrophages(BMMs)under lipopolysaccharide(LPS)stimulation by inhibiting the NF-κB pathway via targeting tumor necrosis factor receptor-associated factor 6(TRAF6),and MSNs could simultaneously promote M2 polarization of BMMs.MiR-146a was also found to inhibit osteoclast formation.Finally,the dual osteogenic-promoting and immunoregulatory effects of MSN+miR-146a were further validated in a stimulated infected mouse mandibular bone defect model via delivery by a photocuring hydrogel.Collectively,the MSN+miR-146a complex revealed good potential in treating inflammatory irregular oralmaxillofacial bone defects.
Jiakang Yang;Jing Shuai;Lixuen Siow;Jingyi Lu;Miao Sun;Wenyue An;Mengfei Yu;Baixiang Wang;Qianming Chen;
Stomatology Hospital,School of Stomatology,Zhejiang University School of Medicine,Zhejiang Provincial Clinical Research Center for Oral Diseases,Key Laboratory of Oral Biomedical Research of Zhejiang Province,Cancer Center of Zhejiang University,Hangzhou 310000,China
口腔医学
inflammatoryhealingstimulation
《Bone Research》 2024 (001)
P.153-164 / 12
This work is supported by the National Key R&D Program of China(No.2022YFC2402900);the National Natural Science Foundation of China(No.81991502);the Key Research and Development Program of Zhejiang Province,China(No.2021C03074);the Basic Public Welfare Project of Zhejiang Province,China(No.LY22H140002);the Research and Development Program of the Stomatology Hospital,Zhejiang University School of Medicine(No.RD2022JCEL20);the Student Research Training Program of Zhejiang University School of Stomatology(No.2022S001).
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