ArticleJournal of translational medicine2024
miR-92b-3p protects retinal tissues against DNA damage and apoptosis by targeting BTG2 in experimental myopia.
Article in Journal of translational medicine, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Research progress on BTG2 in non‑tumor diseases (Review).International journal of molecular medicine · 2026Review
- Mesenchymal stem cell exosomes alleviate ischemic myocardial injury by miR-125b-5p/BTG2 pathway.Molecular and cellular biochemistry · 2026Article
- PC3/Tis21/BTG2 and BTG1 genes: regulators of the cell cycle and neurogenesis, as well as tumor suppressors in malignant brain tumors.Frontiers in cell and developmental biology · 2026Review
- Associations between mechanical stress and epigenetic modifications in outer retinal layer remodeling in high myopia.Frontiers in medicine · 2026Review
- Single-cell RNA sequencing reveals anterograde trans-synaptic degeneration and exacerbated synaptic remodeling in myopia.Experimental & molecular medicine · 2025Article
- Machine Learning Identifies Key Gene Markers Related to Fetal Retina Development at Single-Cell Transcription Level.Investigative ophthalmology & visual science · 2025Article
- Covariation of scleral remodeling and PI3K/Akt signaling pathway in experimental myopia.Scientific reports · 2025Article
- LncRNA MIR600HG inhibits laryngeal cancer development by mediating the miR-424-5p/BTG2 axis.Cancer science · 2025Article
- Research Progress of Epigenetic Modifications in Myopia.International journal of medical sciences · 2025Review
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Authors and funding
11 authors.
Funding
Abstract
backgroundMyopia is one of the eye diseases that can damage the vision of young people. This study aimed to explore the protective role of miR-92b-3p against DNA damage and apoptosis in retinal tissues of negative lens-induced myopic (LIM) guinea pigs by targeting BTG2.
methodsBiometric measurements of ocular parameters, flash electroretinogram (FERG), and retinal thickness (RT) were performed after miR-92b-3p intravitreal injection in LIM guinea pigs. The apoptotic rate was detected by Annexin V-FITC/PI double staining, and the change in mitochondrial membrane potential was measured by JC-1 staining. Retinal apoptosis and expression of p53, BTG2, and CDK2 were explored by TdT-mediated dUTP-biotin nick labeling (TUNEL) and immunofluorescence staining assays, respectively. BTG2 and its upstream and downstream molecules at gene and protein levels in retinal tissues were measured by real-time quantitative PCR (qPCR) and Western blotting.
resultsCompared with normal controls (NC), the ocular axial length of LIM guinea pig significantly increased, whereas refraction decreased. Meanwhile, dMax-a and -b wave amplitudes of ERG declined, retinal thickness was decreased, the number of apoptotic cells and apoptotic rate in LIM eyes was exaggerated, and the mitochondrial membrane potential significantly decreased. In addition, results of qPCR and Western blot assays showed that the expression levels of p53, BTG2, CDK2, and BAX in LIM guinea pigs were higher than the levels of the NC group, whereas the BCL-2 expression level was decreased. By contrast, the miR-92b-3p intravitreal injection in LIM guinea pigs could significantly inhibit axial elongation, alleviate DNA damage and apoptosis, and thus protect guinea pigs against myopia.
conclusionIn conclusion, p53 and BTG2 were activated in the retinal tissue of myopic guinea pigs, and the activated BTG2 could elevate the expression of CDK2 and BAX, and attenuate the expression of BCL-2, which in turn promote apoptosis and eventually lead to retinal thinning and impaired visual function in myopic guinea pigs. The miR-92b-3p intravitreal injection can attenuate the elongation of ocular length and retinal thickness, and inhibit the CDK2, BAX, and p53 expression by targeting BTG2, thereby ameliorating DNA damage and apoptosis in LIM guinea pigs and protecting ocular tissues.
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