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Sökning: WFRF:(Claudianos Charles)

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1.
  • Watts, Michelle, et al. (författare)
  • MicroRNA-210 regulates dendritic morphology and behavioural flexibility in mice
  • 2021
  • Ingår i: Molecular Neurobiology. - Stockholm : Karolinska Institutet, Dept of Women's and Children's Health. - 0893-7648 .- 1559-1182.
  • Tidskriftsartikel (refereegranskat)abstract
    • MicroRNAs are known to be critical regulators of neuronal plasticity. The highly-conserved, hypoxia- regulated microRNA-210 (miR-210) has been shown to be associated with long term memory in invertebrates and dysregulated in neurodevelopmental and neurodegenerative disease models. However, the role of miR-210 in mammalian neuronal function and cognitive behavior remains unexplored. Here we generated Nestin-cre driven miR-210 neuronal knockout mice to characterise miR-210 regulation and function using in vitro and in vivo methods. We identified miR-210 localisation throughout neuronal somas and dendritic processes and increased levels of mature miR- 210 in response to neural activity in vitro. Loss of miR-210 in neurons resulted in higher oxidative phosphorylation and ROS production following hypoxia and increased dendritic arbour density in hippocampal cultures. Additionally, miR-210 knockout mice displayed altered behavioral flexibility in rodent touchscreen tests, particularly during early reversal learning suggesting processes underlying updating of information and feedback were impacted. Our findings support a conserved, activity- dependent role for miR-210 in neuroplasticity and cognitive function.
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2.
  • Werren, John H, et al. (författare)
  • Functional and evolutionary insights from the genomes of three parasitoid Nasonia species.
  • 2010
  • Ingår i: Science. - : American Association for the Advancement of Science (AAAS). - 0036-8075 .- 1095-9203. ; 327:5963, s. 343-8
  • Tidskriftsartikel (refereegranskat)abstract
    • We report here genome sequences and comparative analyses of three closely related parasitoid wasps: Nasonia vitripennis, N. giraulti, and N. longicornis. Parasitoids are important regulators of arthropod populations, including major agricultural pests and disease vectors, and Nasonia is an emerging genetic model, particularly for evolutionary and developmental genetics. Key findings include the identification of a functional DNA methylation tool kit; hymenopteran-specific genes including diverse venoms; lateral gene transfers among Pox viruses, Wolbachia, and Nasonia; and the rapid evolution of genes involved in nuclear-mitochondrial interactions that are implicated in speciation. Newly developed genome resources advance Nasonia for genetic research, accelerate mapping and cloning of quantitative trait loci, and will ultimately provide tools and knowledge for further increasing the utility of parasitoids as pest insect-control agents.
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