Nanoplastics and sunscreens contained in personal care products induce neurotoxicity in early zebrafish embryos
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PROVIDER: PRJNA662909 | ENA |
REPOSITORIES: ENA
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Project description:Nanoplastics with small particle size and high surface area/volume ratio make them easy to absorb environmental pollutants and affect their bioavailability. In this study, polystyrene nanoplastic beads (PS-NPBs) with a particle size of 100nm and sunscreen butyl methoxydibenzoylmethane (BMDBM) contained in personal care products were chosen as target pollutants to study their developmental toxicity and interactive effects on zebrafish embryo. The exposure period was 2-12 hours post fertilization (hpf). The BMDBM and PS-NPBs significantly upregulated the genes related to antioxidant enzymes and downregulated the gene expression of aromatase and DNA methyltransferases, but the influenced genes were not exactly the same, and the combined exposure reduced the adverse effects on the expression of all genes. With the help of single-cell RNA sequencing technology, the neural mid cells were identified as the target cells of both pollutants, and brain development, head development and notch signaling pathway were the functions they commonly altered. The key genes and functions that are specifically affected by BMDBM and/or PS-NPBs were identified. The BMDBM mainly affect the differentiation and fate of neurons in central nervous system through the regulation of her5, her6, her11, lfng, pax2a and fgfr4. The PS-NPBs regulated the expression of olig2, foxg1a, fzd8b, six3a, rx1, lhx2b, nkx2.1a and sfrp5 to alter nervous system development, retinal development, and stem cell differentiation. The phenotypic responses of zebrafish larvae at 120 hpf were tested, and significant inhibition of locomotor activity was found, indicating that early disrupting effect on central nervous system would have a sustained impact on the behavior of zebrafish.
2020-09-12 | GSE157816 | GEO
Project description:Bacterial diversity in home and personal care products
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Project description:Personal Neoantigen Cancer Vaccines
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Project description:Organisms can gain information about their environment from their ancestors, their parents, or their own personal experience. “Cue integration” models often start with the simplifying assumption that information from different sources is additive. Here, we test key assumptions and predictions of cue integration theory at both the phenotypic and molecular level in threespined sticklebacks (Gasterosteus aculeatus). We show that regardless of whether cues about predation risk were provided by their father or acquired through personal experience, sticklebacks produced the same set of predator-adapted phenotypes. Moreover, there were nonadditive effects of personal and paternal experience: animals that received cues from both sources resembled animals that received cues from a single source. A similar pattern was detected at the molecular level: there was a core set of genes that were differentially expressed in the brains of offspring regardless of whether risk was experienced by their father, themselves or both. These results provide strong support for cue integration theory because they show that cues provided by parents and personal experience are comparable at both the phenotypic and molecular level, and draw attention to the importance of nonadditive responses to multiple cues.
2018-06-13 | GSE113548 | GEO
Project description:In this work, we introduce a new concept we have developed and tested, named the differential Personal Pathway index (dPPi). This tool extracts and summates comprehensive disease-specific information contained within an individual’s proteome as a holistic way to follow the response to disease and medical care over time. We demonstrate the principle of the dPPi algorithm on proteins found in urine from patients suffering from neoplasia of the bladder.
2023-01-16 | PXD025139 | Pride
Project description:Exosomes from the brains of rhesus macaques were isolated and characterized, both with and without simian immunodeficiency virus (SIV) induced central nervous system (CNS) disease. Small RNA sequencing revealed that exosomes from the brains of animals with CNS disease contained significantly increased miR-21, a microRNA we have previously shown to be significantly increased in both SIV and HIV induced CNS disease. In addition to neurons in the brain, macrophage/microglial cells/nodules also express miR-21 during SIV induced CNS disease. In vitro culture of macrophages revealed that miR-21 is released into exosomes, and exosomes from macrophage cultures produced from WT, but not miR-21-/- KO, animals are neurotoxic. We find this neurotoxicity is dependent upon exosome carriage of miR-21, and mutation of the sequence within miR-21 predicted to bind TLR7 eliminates this neurotoxicity. Indeed exosomal miR-21 activates TLR7 in a reporter cell line, and the neurotoxicity of exosomal miR-21 is dependent upon TLR7, as neurons isolated from TLR7-/- KO mice are protected from neurotoxicity. Finally, we show that exosomes isolated from the brains of monkeys with SIV induced CNS disease both activate TLR7 and are neurotoxic when compared to exosomes from control animals.
2018-01-29 | GSE109414 | GEO
Project description:Plastic remains contained soil sample Metagenome
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Project description:Nanoplastics are produced by breakdown of plastics in environmental contamination or commercial use for cosmetics or daily expenses. Emerging evidence indicate that ingested nanoplastics with a size smaller than 100 nm have the potential to reach the brain and induces neurotoxicity. However, the potential toxicity of nanoplastics on brain are limited because of difficulties in synthesize of nanoplastics. In present study, we synthesized the fluorescent polystyrene nanoplastics (PSNPs) and examined the toxicity of PSNPs in brain in vivo and in vitro analyses by comparison to IR-813 fluorophore. Synthesized PSNPs were characterized by fluorescence imaging system, scanning electron microscopy, and Fourier-transform infrared spectroscopy. PSNPs were detected in adult mice brain by oral ingestion. In addition, a series of behavioral analyses showed that oral ingestion of PSNPs induced memory impairments. Among brain cells, PSNPs were predominantly internalized in microglia, and uptake of PSNPs induced microglial activation. In addition, the conditioned medium derived from microglia exposed to PSNPs repressed hippocampal neuronal activity. Furthermore, transcriptome analysis showed that PSNPs changed gene expressions in microglia, elevation of neuroinflammation in contrast to suppression of neurotrophic factors. These results indicated that predominant uptake of PSNPs in microglia induced elevation of neuroninflammatory responses whereas suppression of neurotrophic factors that may contribute to the cognitive impairment. Our findings indicate the toxic mechanism and potential detrimental effect of nanoplastic in brain and suggest a potential risk of cognitive impairment by exposure to nanoplastics.
2023-09-24 | GSE243612 | GEO