ArticleBasic and clinical andrology2021
miR-122-5p regulates the tight junction of the blood-testis barrier of mice via occludin : miR-122-5p can regulate the tight junction.
Article in Basic and clinical andrology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 7 citations in OpenAlex.
- Mechanistic insights into the protective effects of vitamin E against olanzapine-induced testicular toxicity: The role of microRNAs in oxidative stress and apoptosis.Iranian journal of basic medical sciences · 2026Article
- MicroRNA dysregulation in male infertility: Insights into mechanisms, biomarkers, and therapeutic strategies- review.Mammalian genome : official journal of the International Mammalian Genome Society · 2025Review
- Purinergic and extracellular vesicle signaling in alcohol-induced blood-brain barrier breakdown and neuroimmune activation.Brain, behavior, and immunity · 2025Review
- LncRNA NEAT1 protects uremic toxin-induced intestinal epithelial barrier injury by regulating miR-122-5p/Occludin axis.PloS one · 2025Article
- In Vitro and In Vivo Models for Drug Transport Across the Blood-Testis Barrier.Drug metabolism and disposition: the biological fate of chemicals · 2023Review
- Insight into microRNAs-Mediated Communication between Liver and Brain: A Possible Approach for Understanding Acute Liver Failure?International journal of molecular sciences · 2021Review
- Article
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6 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundOccludin protein is the primary assembling protein of TJs and the structural basis for tight junction formation between Sertoli cells in the spermatogenic epithelium. The expression of miR-122-5p and occludin are negatively correlated. In order to investigate the regulation mechanism of miR-122-5p on occludin and TJ, the present study isolated primary Sertoli cells from C57BL/6 mice, identified a transcription factor of miR-122-5p in testicle, studied the modulating loci of miR-122-5p on occludin using a dual-luciferase reporter assay, analyzed the regulate of miR-122-5p on the expression of occludin with real-time RT-PCR and Western blot, and studied the effect of miR-122-5p on the tight junction using a Millicell Electrical Resistance System.
resultsThe relative luciferase activity in the pcDNA-Sp1 + pGL3-miR-122-5p promoter group was significantly higher than that in the pcDNA-Sp1 + pGL3-basic group, which suggests that transcript factor Sp1 promotes the transcription of miR-122-5p. The relative luciferase activity in the occludin 3'-UTR (wt) + miR-122-5p mimic group was significantly lower than that in the other groups (p < 0.01), which indicates that miR-122-5p modulates the expression of occludin via the ACACTCCA sequence of the occludin-3'UTR. The levels of occludin mRNA and protein in the miR-122-5p mimic group were significantly lower than that in the other groups (p < 0.05), which indicates that miR-122-5p reduces the expression of occludin. The trans-epithelial resistance of the miR-122-5p mimic group was significantly lower than that of the blank control group after day 4 (p < 0.05), which indicates that miR-122-5p inhibited the assembly of the inter-Sertoli TJ permeability barrier in vitro.
conclusionThese results displayed that miR-122-5p could regulate tight junctions via the Sp1-miR-122-5p-occludin-TJ axis.
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