Postweaning iron deficiency in rats alters reelin expression in the nucleus accumbens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA545917 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR9180510.fastq.gz | Fastqsanger.gz | |||
| SRR9180520.fastq.gz | Fastqsanger.gz | |||
| SRR9180530.fastq.gz | Fastqsanger.gz | |||
| SRR9180540.fastq.gz | Fastqsanger.gz | |||
| SRR9180550.fastq.gz | Fastqsanger.gz |
Items per page: 5 1 - 5 of 80 |
Similar Datasets
Project description:Background: Epidemiological research indicates that iron deficiency (ID) in infancy correlates with long-term cognitive impairment and behavioral disturbances, despite therapy. However, the mechanisms underlying these effects are unknown. Objective: We investigated how ID affected postweaning behavior and monoamine concentration in rat brains to determine whether ID during the juvenile period affected gene expression and synapse formation in the prefrontal cortex (PFC) and nucleus accumbens (NAcc). Methods: Fischer344/Jcl male rats aged 21–39 days were fed low-iron diets (0.35 mg/kg iron; ID group) or standard AIN-93 G diets (3.5 mg/kg iron; control group). The locomotor activity of male offspring was evaluated by the open field and elevated plus maze tests at ages 8 and 12 weeks. Monoamine concentrations in the PFC, NAcc, caudate-putamen, ventral midbrain, dorsal midbrain, and pons were analyzed. Comprehensive gene expression analysis was performed in the PFC and NAcc at age 13 weeks. Finally, we investigated synaptic density in the PFC and NAcc by synaptophysin immunostaining. Results: Behavioral tests revealed significant interactions between age and iron consumption for the total distance traveled and the distance traveled in the peripheral area (p < 0.05), indicating that ID during the juvenile period affected hyperactivity and that this persisted to adulthood. At age 13 weeks, the ID group had increased levels of both dopamine and the metabolites of dopamine and serotonin in the NAcc. Comprehensive gene expression analysis and immunostaining showed decreased Reelin gene expression (adjusted p < 0.01) and significantly increased spine density in the NAcc in the ID group compared with the control group (p < 0.01). Conclusions: ID during the postweaning juvenile period led to long-term hyperactivity, monoamine disturbance in the brain, and downregulation of Reelin expression in the NAcc despite complete iron repletion. Epigenetic modification of Reelin genes may be involved in synaptic plasticity in the NAcc.
2022-05-31 | GSE132094 | GEO
Project description:Reelin is a large, secreted glycoprotein that is best known as an essential molecule directing neocortical neuronal migration, but reelin serves an important functional role in regulating neurite outgrowth and arborization as well. Canonically, reelin signals through the lipoprotein receptors apolipoprotein E receptor 2 (ApoER2) and very low-density lipoprotein receptor (VLDLR). Reelin can signal through non-canonical receptors and unidentified co-receptors as well, but the downstream effects of these non-canonical pathways are not well understood. Using an unbiased Tandem Mass Tag LC-MS/MS (TMT) proteomics screen and gene set enrichment analysis (GSEA), we identified overlapping and distinct intra-cellular pathways enriched downstream of canonical and non-canonical reelin signaling in primary murine neurons during periods of robust neurite arborization. We observed canonical signaling led to substantial changes in actin cytoskeletal dynamics and cell morphogenesis while non-canonical signaling preferentially regulated protein translation, suggesting reelin fine tunes neuronal structure and function through distinct signaling pathways. We also identified a novel node downstream of canonical reelin signaling, glycolytic enzyme and actin binding protein aldolase A (aldo A). Biochemical analysis revealed aldo A undergoes de novo translation and is dissociated from the actin cytoskeleton after acute reelin stimulation. Additionally, shRNA knockdown of aldo A in primary murine cultures and in vivo through in utero electroporation (IUE), reveal aldo A is necessary for reelin mediated neurite growth and the proper arborization and positioning of excitatory layer II/III neurons independent of glycolytic function. These results shed new light on the molecular mechanisms and signaling pathways regulating reelin dependent neuronal arborization.
2025-05-06 | PXD046667 | Pride
Project description:We performed RNA-Seq analysis of neoatal rat ventricular cardiomyocytes (NRVCs)which were treated with Reelin,or knocking down Vldlr,Thbs1,or overexpressing Vldlr to investigate the moleclular mechanism of Thbs1/Reelin-Vldlr to regulate cardiomyocyte proliferation.In addition,the day 1mouse cardiomyocytes in Myh6-Cre;Vldlr f/f mice ,Myh6-Cre;Vldlr f/+ mice ,versus Vldlr f/f mice were also performed to explore the fucntion of Vldlr which regulating cardiomyocyte proliferation in vivo.
2021-06-03 | GSE176009 | GEO
Project description:RAS signalling through Phosphoinositide 3-kinase (PI3-Kinase) has been shown to have an essential role in tumour initiation and maintenance. RAS also regulates cell motility and tumor invasiveness, but the role of direct RAS binding to PI3-Kinase in this remains uncertain. Here, we provide evidence that disruption of RAS interaction with PI3-Kinase p110adecreases cell motility and prevents activation of Rac GTPase. Analysis of gene expression in cells lacking RAS interaction with p110areveals increased levels of the extracellular matrix glycoprotein Reelin and activation of its downstream pathway resulting in upregulation of E-Cadherin expression. Induction of the Reelin / E-Cadherin axis is also observed in Kras mutant lung tumours that are regressing due to blockade of RAS interaction with PI3-Kinase. Furthermore, loss of Reelin correlates with decreased survival of lung and breast cancer patients. Reelin thus plays a role in restraining RAS and PI3-kinase promotion of cell motility and potentially tumour metastasis.
2016-02-12 | GSE77843 | GEO
Project description:Protein phosphorylation, a type of post-translational modification (PTM), has been identified in the addiction process. However, its role in social hierarchy remains poorly understood. In this study, we used the tube test to classify rats as dominants or subordinates. In the CPP paradigm, subordinates exhibited a higher susceptibility to addiction. Quantitative phosphoproteomic analysis revealed distinct phosphoproteomic profiles in the Nucleus Accumbens between these groups.
2025-04-09 | PXD062735 | Pride
Project description:Animal models provide opportunity to study neurobiological aspects of human alcoholism. Changes in gene expression have been implicated in mediating brain function, including reward system and addiction. The current study aimed to identify novel genes that may underlie ethanol preference. Microarray analysis comparing gene expression in nucleus accumbens (NAc), hippocampus (HP) and prefrontal medial cortex (mPFC) was performed in two rat strains selected for extreme levels of ethanol preference - Warsaw High Preferring (WHP) and Warsaw Low Preferring (WLP). The identified candidate genes may underlie differential ethanol preference in rat model of alcoholism. This is analysis of 18 RNA samples, including 9 technical replicates. Two strains of rats selected for extreme levels of ethanol preference (low preferring WLP and high preferring WHP) were compared. Three brain areas (nucleus accumbens, prefrontal medial cortex and hippocampus) were studied. For each brain area, 6 RNA samples (including 3 technical replicates) were analyzed. Each RNA sample consist of of equal amounts of total RNA from 3 male rats. Comparisons: Nucleus accumbens of WHP vs. Nucleus accumbens of WLP; Prefrontal medial cortex of WHP vs. Prefrontal medial cortex of WLP; Hippocampus of WHP vs. Hippocampus of WLP. 3 biological replicates in each comparison.
2015-01-17 | E-GEOD-65064 | biostudies-arrayexpress
Project description:A comprehensive landscape of epigenomic events regulated by the Reelin signaling through activation of specific cohort of cis-regulatory enhancer elements (LRN-enhancers), which involves the proteolytical processing of the LRP8 receptor by the gamma-secretase activity and is required for learning and memory behavior All GRO-Seq experiments were designed to understand the unique signature of LRN-enhancers and to evaluate the transcriptional response to Reelin treatment in neuronal cells.
2015-04-29 | E-GEOD-66703 | biostudies-arrayexpress
Project description:A comprehensive landscape of epigenomic events regulated by the Reelin signaling through activation of specific cohort of cis-regulatory enhancer elements (LRN-enhancers), which involves the proteolytical processing of the LRP8 receptor by the gamma-secretase activity and is required for learning and memory behavior All RNA-Seq experiments were designed to evaluate the transcriptional program regulated by the Reelin-LRP8 signaling pathway in neuronal cells
2015-04-29 | E-GEOD-66707 | biostudies-arrayexpress
Project description:A comprehensive landscape of epigenomic events regulated by the Reelin signaling through activation of specific cohort of cis-regulatory enhancer elements (LRN-enhancers), which involves the proteolytical processing of the LRP8 receptor by the gamma-secretase activity and is required for learning and memory behavior All RNA-Seq experiments were designed to evaluate the transcriptional program regulated by the Reelin-LRP8 signaling pathway in neuronal cells
2015-04-29 | E-GEOD-66706 | biostudies-arrayexpress
Project description:Canabinoid exposure during adolescence alters the rewarding properties of drugs of abuse by mechanisms that are not fully understood. The nucleus accumbens is a key node of the circuit mediating the rewarding effects of most drugs. Here, we present data on the differential gene expression in the nucleus accumbens shell in male and female Wistar rats (postnatal day 90) after exposure to THC (3 mg/kg i.p.) or vehicle (ethanol:cremophor:saline; 1:1:18; 2 mL/kg i.p.) during adolescence (postnatal day 28 to postnatal day 44; injections on alternate days). There were 96 DEGs in THC-males compared to VEH-males and 87 DEGs in the females’ comparison. Only nine of these DEGs were present in both the THC vs. VEH comparison in both sexes. Our results suggest that THC exposure during adolescence affects several families of genes that have important functions for brain development, behavior and synaptic plasticity and could explain, at least in part, the complex behavioral phenotype observed in adult individuals with exposure to cannabinoids during adolescence.
2020-09-19 | GSE158188 | GEO