miR-217/ Mafb Axis Involve in High Glucose-Induced β-TC-tet Cell Damage Via Regulating NF-κB Signaling Pathway
Biochemical Genetics(2020)
Abstract
We attempt to explore the role of miR-217 during the process of type 2 diabetes mellitus (T2DM). Mouse β-TC-tet was dealt with 16.7 mM glucose (HG) to imitate the cells in T2DM. Cell proliferation and apoptosis were determined by cell counting kit-8 and flow cytometry. The correlation between miR-217 and Mafb was predicted with biological software and confirmed by dual lucifierase assay. Western blot was applied to detect protein expression. The data from GEO database exhibited that miR-217 was upregulated in T2DM patients. HG treatment upregulated the expression of miR-217, inhibited the proliferation, and promoted the apoptosis and inflammation of β-TC-tet cell. Depletion of miR-217 alleviated the damage of β-TC-tet cell caused by HG. Mafb was affirmed as a target of miR-217 and was negatively modulated by miR-217. Knockdown of Mafb attenuated the alleviation of miR-217 inhibitor on β-TC-tet cell damage. The expression of key proteins in NF-κB signaling pathway was upregulated by HG, and this upregulation tendency was inhibited by miR-217 inhibitor. Moreover, silencing Mafb could alleviate the inhibition of miR-217 inhibitor on these proteins. Our findings insinuated that inhibition of miR-217 could relieve β-TC-tet damage induced by HG through regulating Mafb and NF-κB signaling.
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Key words
Type 2 diabetes mellitus,β-TC-tet,miR-217,MAFB,NF-κB
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