Open AccessMiR‐103‐3p targets the m 6 A methyltransferase METTL14 to inhibit osteoblastic bone formation
Author(s) -
Sun Zhongyang,
Wang Han,
Wang Yuxiang,
Yuan Guodong,
Yu Xin,
Jiang Hui,
Wu Qi,
Yang Binkui,
Hu Zebing,
Shi Fei,
Cao Xinsheng,
Zhang Shu,
Guo Ting,
Zhao Jianning
Publication year - 2021
Publication title -
aging cell
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.103
H-Index - 140
eISSN - 1474-9726
pISSN - 1474-9718
DOI - 10.1111/acel.13298
Subject(s) - osteoblast , osteoporosis , medicine , endocrinology , microrna , bone formation , ovariectomized rat , biology , cancer research , osteosarcoma , methylation , microbiology and biotechnology , biochemistry , in vitro , estrogen , gene
Impaired osteoblast function is involved in osteoporosis, and microRNA (miRNA) dysregulation may cause abnormal osteoblast osteogenic activity. However, the influence of miRNA on osteoblast activity and the underlying mechanisms remain elusive. In this study, miR‐103‐3p was found to be negatively correlated with bone formation in bone specimens from elderly women with fractures and ovariectomized (OVX) mice. Additionally, miR‐103‐3p directly targeted Mettl14 to inhibit osteoblast activity, and METTL14‐dependent N 6 ‐methyladenosine (m 6 A) methylation inhibited miR‐103‐3p processing by the microprocessor protein DGCR8 and promoted osteoblast activity. Moreover, miR‐103‐3p inhibited bone formation in vivo, and therapeutic inhibition of miR‐103‐3p counteracted the decreased bone formation in OVX mice. Further, METTL14 was negatively correlated with miR‐103‐3p but positively correlated with bone formation in bone specimens from elderly women with fractures and OVX mice. Collectively, our results highlight the critical roles of the miR‐103‐3p/METTL14/m 6 A signaling axis in osteoblast activity, identifying this axis as a potential target for ameliorating osteoporosis.