Project description:The aim of this study was to characterize ATM/ATR substrate motif specific phosphoproteome (phospho-SQ/TQ) in response to N-nitrosodimethylamine (NDMA) in mice. Motif specific phosphorylation were measured using quantitative LC-MS/MS based on TMT labeling.
Project description:Transcriptomic profiling of mouse liver tissue to characterize the acute and long-term gene expression response to the carcinogen N-nitrosodimethylamine (NDMA) in juvenile mice. RaDR+/+;GPT+/+ (WT) and RaDR+/+;GPT+/+;Mgmt-/- (Mgmt knockout) mice received intraperitoneal injections of NDMA (3.5 mg/kg at postnatal day 8 and 7 mg/kg at postnatal day 15) or saline vehicle. Liver tissue was collected at Day 1, Day 2, Day 5, Week 10, and Month 10 post-treatment and subjected to bulk RNA-seq to identify differential gene expression patterns across genotypes, sexes, treatments, and timepoints.
Project description:Spatial transcriptomics (10x Genomics Visium) was performed on fresh-frozen liver tissue (left lobe) from Mgmt-/- mice treated with N-nitrosodimethylamine (NDMA) or saline vehicle during the juvenile period. The study includes male and female mice sacrificed at 10 weeks or 10 months post-birth to characterize spatially resolved transcriptomic changes associated with NDMA-induced liver damage and potential carcinogenesis over time. Mice carried the RaDR+/+; GPT+/+ genotype enabling detection of recombination and mutation events. Tissue sections were processed using the 10x Visium workflow, H&E stained, imaged, permeabilized for spatially barcoded cDNA synthesis, and sequenced on an Illumina NextSeq 500.
2026-05-22 | GSE332601 | GEO
Project description:Microbial Community Characterization in Advanced Water Reclamation for Potable Reuse
| PRJNA749122 | ENA
Project description:Microbial communities in an advanced water treatment system for potable reuse
Project description:Inhalation of the amibient air polution ozone causes lung inflammation and can suppress host defense mechanisms, including impairing macrophage phagocytosis. Ozone reacts with cholesterol in the lung to form oxysterols, like secosterol A and secosterol B, which can form covalent adducts on cellular proteins. How oxysterol-protein adduction modifies the function of lung macrophages is unknown. Herein, we used a preoteomic screen to identify lung macrophage proteins that fomr adducts with ozone-derived oxysterols. Analysis show that the phagocytic receptor CD206 and CD64 formed adducts with secosterol A. Adduction of these receptors with ozone-derived oxysterols impaired ligand binding and corresponded with reduced macrophage phagocytosis. This work suggests a novle mechanism for the suppression of macrophage phagocytosis following ozone exposure through the generation of oxysterols and the formation of oxysterol-protein adducts on phagocytic receptors.
Project description:A total of 1,301 differentially expressed genes were identified: 521 upregulated and 780 downregulated. Furthermore, p21 and PAI levels decreased, which coincided with decreases in E-cadherin and increases in fibronectin expression, in cells stimulated with Clonorchis sinensis excretory/secretory products (ESPs) and NDMA. Cancer-related proteins, such as EGFR, K-ras, and PCNA, were significantly upregulated in cells exposed to C. sinensis ESPs and NDMA. Our results showed that C. sinensis ESPs and a small amount of NDMA were sufficient to induce cancerous transformation and epithelial-mesenchymal transition (EMT) in normal H69 cholangiocytes.
