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Chinese Journal of Clinical Pharmacology and Therapeutics ›› 2018, Vol. 23 ›› Issue (7): 749-754.doi: 10.12092/j.issn.1009-2501.2018.07.005

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Regulative effects of miR-150 on CYP3A4

LIU Li1, PENG Jinfu2, GUO Chengxian2, YANG Xiding3, LI Haigang1, YANG Guoping2   

  1. 1 Department of Pharmacy, Changsha Medical University, Changsha 410200, Hunan, China; 2 Department of Pharmacy, the Third Xiangya Hospital, Central South University, Changsha 410013, Hunan, China; 3 Department of Pharmacy, the Second Xiangya Hospital, Central South University, Changsha 410011, Hunan, China
  • Received:2017-12-20 Revised:2018-04-10 Online:2018-07-26 Published:2018-07-20

Abstract:

AIM: To explore the role of miR-150 in the regulation of CYP3A4 and the underlying mechanism. METHODS: CYP3A4 mRNA and protein expression were tested by RT-PCR and Western blot when the Chang liver cells were stimulated by FFA containing fatty acids free 1% BSA. Bioinformatics miRNA databases were used to identify CYP3A4-related miRNAs and the wild-type CYP3A4 3′-UTR plasmids were constructed, miR-150 and reporter plasmid were co-transfected into the Chang liver cells to test the expression ratio of the reported fluorescence and the correction fluorescence. Then the miR-150 mimic were transfected into the Chang liver cells, while miRNA inhibitor were transfected into the steatosis cells. RT-PCR and Western blot were used to detect CYP3A4 mRNA and protein expression. RESULTS: The CYP3A4 mRNA and protein level were statistically significantly decreased(P<0.05), while the mature miR-150 levels were increased (P<0.05)when the Chang liver cells were stimulated after 24 h by 1 mmol/L FFA. CYP3A4 was found to be the target gene of miR-150 with a bioinformatics analysis. Then CYP3A4 mRNA level was significantly decreased (P<0.05). Meanwhile, the expression level of CYP3A4 protein also decreased when the miR-150 mimic were transfected into the Chang liver cells. But CYP3A4 mRNA expression has no statistical significance (P=0.071) in miR-150 inhibitor group. CONCLUSION: The miR-150 can combine with CYP3A4 3′-UTR directly, and can further regulate the expression of CYP3A4 mRNA.

Key words: miR-150, CYP3A4, regulation

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