ABSTRACT: Distinctive Effects of Graphene Oxide and Reduced Graphene Oxide on Methane Production Kinetics and Pharmaceuticals Removal in Anaerobic Reactors
Project description:This study investigates transcriptomic differences in the lung and liver after pulmonary exposure to two Graphene based materials with similar physical properties, but different surface chemistry. Female C57BL/6 mouse were exposed by a single intratracheal instillation of 0, 18, 54 or 162 μg/mouse of graphene oxide (GO) or reduced graphene oxide (rGO). Pulmonary and hepatic transcriptional changes were compared to identify commonly and uniquely perturbed functions and pathways by GO and rGO. These changes were then related to previously analyzed endpoints. GO exposure induced more differentially expressed genes, affected more functions, and perturbed more pathways compared to rGO, both in the lung and liver.
Project description:Nanomaterials have lots of promising applications, and concern has risen about their impact to human health. Here, we have analyzed the genome-wide DNA methylation changes associated to the exposure to reduced graphene oxide (rGO) in human lung epithelial cells. Six conditions were assayed, with two technical replicates per condition (12 arrays in total): control, 1 and 10 µg/mL of rGO for 15 or 30 days of exposure.
Project description:The genome-wide transcriptome analysis highlight the increased biocompatibility on immune cells of graphene functionalized with amino groups (NH2) compared with graphene oxide (GO); reducing the cell metabolism disfunction. Moreover, GONH2 was found to polarizes T-cell and monocyte activation toward a T helper-1/M1 immune response.
Project description:Occupational and consumer exposure to GRMs will increase but their impact on human health is still largely unknown. We sought to perform a transcriptome comparison of the bioresponses of MDM and THP-1 macrophages exposed to 5 or 20 µg/ml graphene oxide (GO) or graphene nanoplatelets (GNP) for 6 and 24 h to capture early and more persistent acute responses. Cristalline silica (DQ) was included as immunotoxic reference material.
Project description:Single cell RNA sequencing of 3D liver spheroid exposed to vanadium pentoxide (V2O5), titanium dioxide (TiO2), or graphene oxide (GO) was used to elucidate the toxicological mechanisms of different nanoparticles.
Project description:Graphene Oxide Antigen Presenting Platform was designed for human T cell activation superior to commercial beads. We used deep RNA sequencing to study the mechanism of the T cell activation from PBMCs.
Project description:The present study was conducted in the frame of the EU-funded Graphene Flagship project. We previously evaluated the impact of graphene oxide (GO) on the gut microbiome in adult zebrafish by performing 16S rRNA gene sequencing in wild-type versus AhR-deficient zebrafish. Here, we performed single-cell RNA-sequencing (10x Genomics) on whole (dissociated) germ-free (GF) zebrafish embryos exposed at 5 dpf to GO plus the microbial metabolite butyrate to gain insight into the impact on specific cell populations in GF zebrafish.
