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Sun Y, Zhang J, Wang Y, Wang L, Song M, Khan A, Zhang L, Niu B, Zhao H, Li M, Luo T, He Q, Xie X, Liu Z, Xie J. miR-222-3p is involved in neural tube closure by directly targeting Ddit4 in RA induced NTDs mouse model. Cell Cycle 2021; 20:2372-2386. [PMID: 34779712 DOI: 10.1080/15384101.2021.1982506] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
Previously our results showed miR-222-3p was significantly downregulated in retinoic acid-induced neural tube defect (NTD) mouse model through transcriptome. Down-regulation of miR-222-3p may be a causative biomarker in NTDs. In this study, RNA was extracted from mouse embryos at E8.5, E9.5 and E10.5, and the expression level of miR-222-3p was measured by quantitative real-time PCR analysis. The preliminary mechanism of miR-222-3p in NTDs involved in cell proliferation, apoptosis and migration was investigated in mouse HT-22 cell line. The expression of miR-222-3p was significantly decreased at E8.5, E9.5 and E10.5 developed in mouse embryos which were consistent with our transcriptome sequencing. Suppression of miR-222-3p in HT-22 cells resulted in the inhibition of cell proliferation and migration, cell cycle and apoptosis. Moreover, DNA damage transcript 4 (Ddit4) was identified as a direct and functional target of miR-222-3p. miR-222-3p is negatively regulated by Ddit4. The mutation of binding site of Ddit4 3'UTR abrogated the responsiveness of luciferase reporters to miR-222-3p and showed that Ddit4 expression partially attenuated the function of miR-222-3p. We preliminatively confirmed that low expression of miR-222-3p has reduced the expression of β-catenin, TCF4 and other related genes in the Wnt/β-catenin signaling pathway.Collectively, these results demonstrated that miR-222-3p regulates the Wnt/β-catenin signaling pathway through Ddit4 inhibition in HT-22 cells, resulted in cell proliferation and apoptosis imbalance, and thus led to neural tube defects.
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Affiliation(s)
- Yuqing Sun
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth, Defect and Cell Regeneration, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Juan Zhang
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth, Defect and Cell Regeneration, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Yufei Wang
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth, Defect and Cell Regeneration, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Lei Wang
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth, Defect and Cell Regeneration, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Meiyan Song
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth, Defect and Cell Regeneration, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Ajab Khan
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth, Defect and Cell Regeneration, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Li Zhang
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth, Defect and Cell Regeneration, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Bo Niu
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth, Defect and Cell Regeneration, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Hong Zhao
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth, Defect and Cell Regeneration, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Meining Li
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth, Defect and Cell Regeneration, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Tiane Luo
- Department of Statistics, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Qiwei He
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth, Defect and Cell Regeneration, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Xianghui Xie
- Municipal Key Laboratory of Child Development and Nutriomic, Capital Institute of Pediatrics, Beijing, China
| | - Zhizhen Liu
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth, Defect and Cell Regeneration, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Jun Xie
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth, Defect and Cell Regeneration, Shanxi Medical University, Taiyuan, Shanxi, China
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