ArticleThe international journal of neuropsychopharmacology2015
Prefrontal microRNA-221 Mediates Environmental Enrichment-Induced Increase of Locomotor Sensitivity to Nicotine.
Article in The international journal of neuropsychopharmacology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 11 papers, 2 of them syntheses that pooled it.
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Who cites it
11 citing papers in PubMed, 2 syntheses or guidelines pooled it, 13 citations in OpenAlex.
- Can Environmental Enrichment Modulate Epigenetic Processes in the Central Nervous System Under Adverse Environmental Conditions? A Systematic Review.Cellular and molecular neurobiology · 2024Pooled it
- Role of microRNAs in the pathophysiology of addiction.Wiley interdisciplinary reviews. RNA · 2021Pooled it
- The role of sensory experience in the maturation of prefrontal cortical circuits.Frontiers in neuroscience · 2026Review
- Socioeconomic status and economic hardship attenuated the associations between early tobacco or nicotine use and brain outcomes in preadolescent children.NeuroImmune pharmacology and therapeutics · 2025Article
- A bibliometric analysis of studies on environmental enrichment spanning 1967-2024: patterns and trends over the years.Frontiers in behavioral neuroscience · 2024Article
- The role of microRNAs in nicotine signaling.EXCLI journal · 2023Review
- Neurobehavioral effects of environmental enrichment and drug abuse vulnerability: An updated review.Pharmacology, biochemistry, and behavior · 2022Review
- Noncoding RNA therapeutics for substance use disorder.Advances in drug and alcohol research · 2022Article
- microRNA regulation related to the protective effects of environmental enrichment against cocaine-seeking behavior.Drug and alcohol dependence · 2021Article
- MDMA Abuse in Relation to MicroRNA Variation in Human Brain Ventral Tegmental Area and Nucleus Accumbens.Iranian journal of pharmaceutical research : IJPR · 2019Article
- Regulation of Adult Neurogenesis by Non-coding RNAs: Implications for Substance Use Disorders.Frontiers in neuroscience · 2018Review
Corrections and comments
- Erratum issuedErratum.2016
Authors and funding
9 authors at 1 institution in 1 country.
Funding
Abstract
backgroundEnvironmental enrichment alters susceptibility in developing drug addiction. We have demonstrated that rats raised in an enriched condition are more sensitive than rats raised in an impoverished condition to nicotine-induced locomotor activity, and this is associated with alterations of phosphorylated extracellular signal-regulated kinase 1/2 within the prefrontal cortex. This study determined the impact of microRNA-221 in the prefrontal cortex on phosphorylated extracellular signal-regulated kinase 1/2 and the enriched environment-dependent behavioral changes in response to nicotine.
methodsA microRNA array was conducted to profile microRNA expression in the prefrontal cortex of enriched condition and impoverished condition rats in response to repeated nicotine (0.35 mg/kg, s.c.) administration. microRNA-221 in the prefrontal cortex, nucleus accumbens, and striatum was further verified by quantitative real-time PCR. Lentiviral-mediated overexpression of microRNA-221 in PC12 cells and the medial prefrontal cortex was performed to determine the effects of microRNA-221 on nicotine-mediated phosphorylated extracellular signal-regulated kinase 1/2, phosphorylated cAMP-response element-binding protein, and locomotor activity.
resultsmicroRNA-221 was profoundly upregulated in the prefrontal cortex but not in nucleus accumbens and striatum of enriched condition rats relative to impoverished condition rats following repeated administration of nicotine. Overexpression of lentiviral-microRNA-221 attenuated nicotine-induced increase in phosphorylated extracellular signal-regulated kinase 1/2 in PC12 cells. Lentiviral-microRNA-221 overexpression in the medial prefrontal cortex further increased locomotor activity in impoverished condition but not in enriched condition rats in response to repeated nicotine administration. Accordingly, lentiviral-microRNA-221 attenuated nicotine-induced increases in phosphorylated extracellular signal-regulated kinase 1/2 and phosphorylated cAMP-response element-binding protein in the medial prefrontal cortex of impoverished condition but not enriched condition rats.
conclusionThese findings suggest that environmental enrichment, via upregulation of prefrontal microRNA-221 expression, suppresses the nicotine-induced activation of extracellular signal-regulated kinase and cAMP-response element-binding protein, which provides a potential mechanism underlying enhanced locomotor sensitivity to nicotine.
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