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Erschienen in: Calcified Tissue International 5/2020

18.03.2020 | Original Research

HNGF6A Inhibits Oxidative Stress-Induced MC3T3-E1 Cell Apoptosis and Osteoblast Phenotype Inhibition by Targeting Circ_0001843/miR-214 Pathway

verfasst von: Xiao Zhu, Ziping Zhao, Canjun Zeng, Bo Chen, Haifeng Huang, Youming Chen, Quan Zhou, Li Yang, Jicheng Lv, Jing Zhang, Daoyan Pan, Jie Shen, Gustavo Duque, Daozhang Cai

Erschienen in: Calcified Tissue International | Ausgabe 5/2020

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Abstract

Humanin (HN), a mitochondrial derived peptide, plays cyto-protective role under various stress. In this study, we aimed to investigate the effects of HNGF6A, an analogue of HN, on osteoblast apoptosis and differentiation and the underlying mechanisms. Cell proliferation of murine osteoblastic cell line MC3TC-E1 was examined by CCK8 assay and Edu staining. Cell apoptosis was detected by Annexin V assay under H2O2 treatment. The differentiation of osteoblast was determined by Alizarin red S staining. We also tested the expression of osteoblast phenotype related protein by real-time PCR and Western blot. The interaction between Circ_0001843 and miR-214, miR-214 and TAFA5 was examined by luciferase report assay. Circ_0001843 was inhibited by siRNA and miR-214 was suppressed by miR-214 inhibitor to determine the effects of Circ_0001843 and miR-214 on cell proliferation, apoptosis, and differentiation. HNGF6A, an analogue of HN, exerted cyto-protection and osteogenesis-promotion in MC3T3-E1 cells. The expression of osteoblast phenotype related protein was significantly induced by HNGF6A. Additionally, HNGF6A treatment decreased Circ_0001843 and increased miR-214 levels, as well as inhibited the phosphorylation of p38 and JNK. We further found that Circ_0001843 directly bound with miR-214, which in turn inhibited the phosphorylation of p38 and JNK. Furthermore, both Circ_0001843 overexpression and miR-214 knockdown significantly decreased the cyto-protection and osteogenic promotion of HNGF6A. In summary, our data showed that HNGF6A protected osteoblasts from oxidative stress-induced apoptosis and osteoblast phenotype inhibition by targeting Circ_0001843/miR-214 pathway and the downstream kinases, p38 and JNK.
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Metadaten
Titel
HNGF6A Inhibits Oxidative Stress-Induced MC3T3-E1 Cell Apoptosis and Osteoblast Phenotype Inhibition by Targeting Circ_0001843/miR-214 Pathway
verfasst von
Xiao Zhu
Ziping Zhao
Canjun Zeng
Bo Chen
Haifeng Huang
Youming Chen
Quan Zhou
Li Yang
Jicheng Lv
Jing Zhang
Daoyan Pan
Jie Shen
Gustavo Duque
Daozhang Cai
Publikationsdatum
18.03.2020
Verlag
Springer US
Erschienen in
Calcified Tissue International / Ausgabe 5/2020
Print ISSN: 0171-967X
Elektronische ISSN: 1432-0827
DOI
https://doi.org/10.1007/s00223-020-00660-z

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