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Next Generation Sequencing of Transcriptomes of PM2.5-exposed Mice

ABSTRACT: Next Generation Sequencing of Transcriptomes of PM2.5-exposed Mice

PROVIDER: PRJNA773745 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR16533714_1.fastq.gz	Fastqsanger.gz
	SRR16533714_2.fastq.gz	Fastqsanger.gz
	SRR16533715_1.fastq.gz	Fastqsanger.gz
	SRR16533715_2.fastq.gz	Fastqsanger.gz
	SRR16533716_1.fastq.gz	Fastqsanger.gz

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Next Generation Sequencing of Transcriptomes of PM2.5-exposed Mice

Project description:Purpose: The goal of this study is to investigate the effects of fine particulate matter (PM2.5) exposure on mouse olfactory bulb using next generation sequencing (NGS). Methods: After 28 days of 3 mg/kg/3 day and 10 mg/kg/3 day PM2.5 exposure, olfactory bulb mRNA profiles of 8-week-old wild-type (WT) male C57BL/6 mice were generated by deep sequencing, in 3-4 repeats, using Illumina NovaSeq 6000. For each sample, clean reads were obtained that mapped to mm10 using HISAT2 (hierarchical indexing for spliced alignment of transcripts) v2.0.477. Results: Our study revealed that PM2.5 treatment caused significant effects on the gene expression profilling of mouse olfactory bulb. Overall, the sequencing identified 34,745 transcripts, and two kinds of treatments obtained 60 and 138 differently expressed genes (DEGs) respectively, with a criteria of fold change >2 and q-value <0.5. Most biological events that DEGs involved were inflammation relevant. Conclusions: Our study revealed that PM2.5 treatment caused significant effects on the gene expression profiling of mouse olfactory bulb.

2024-01-22 | GSE186404 | GEO

Effect of circDNA2 on gene expression of chronic PM2.5 exposed HBE cells

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Next Generation Sequencing Facilitates Analysis of The Mouse Oocyte、Cumulus cells and Blastocyst Transcriptomes From PM2.5 Exposure Group And Filtrated Air Group

Project description:Purpose: Next-generation sequencing (NGS) has revolutionized systems-based analysis of cellular pathways. The goals of this study are to compare mouse NGS-derived oocyte、cumulus cell and blastocyst transcriptome profiling (RNA-seq) between PM2.5 exposure group and Filtrated air group Methods: mouse oocyte、cumulus cell and blastocyst mRNA profiles were generated by deep sequencing, in triplicate for each stage, using Illumina Hi-Seq 2500. The sequence reads that passed quality filters were analyzed at the transcript isoform level with two methods: Burrows–Wheeler Aligner (BWA) followed by ANOVA (ANOVA) and TopHat followed by Cufflinks. Results: Using an optimized data analysis workflow, we mapped about 30 million sequence reads per sample to the mouse genome (build mm9). Genes with adjusted P < 0.05 and fold-change (FC) ≥ 2 were considered differentially expressed genes (DEGs). The oocyte transcriptome analysis showed that 467 DEGs (260 and 207 up- and down-regulated genes, respectively) were identified in the CAP group compared with the FA group. In the cumulus cell analysis, 592 DEGs (358 and 234 up- and down-regulated genes, respectively) were identified in the CAP group compared with the FA group. The blastocyst transcriptome analysis identified 448 DEGs (254 and 194 up- and down-regulated, respectively) in the CAP group compared with the FA group. Conclusions: Our study represents the first detailed analysis of mouse oocyte、cumulus cell and blastocyst transcriptomes, with biologic replicates, generated by RNA-seq technology between PM2.5 exposure group and Filtrated air group.

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Transcriptomic Profiling of Human Corneal Epithelial Cells Exposed to Airborne Fine Particulate Matter (PM2.5)

Project description:Objectives: To explore the molecular mechanisms of PM2.5-induced dysfunction in human corneal epithelial cells (HCECs). Methods: RNA-Seq was performed to identify the differentially expressed genes (DEGs) in PM2.5-exposed HCECs compared to unexposed condition, which was followed by validation via real-time PCR (qRT-PCR). Results: A total of 434 DEGs—240 up-regulated and 194 down-regulated—were identified in PM2.5-exposed HCECs rather than unexposed HCECs. The expression of a few genes related to proliferation, inflammation, and aryl hydrocarbon stimulation were significantly altered by PM2.5 exposure, which may contribute to PM2.5-related corneal diseases. Conclusion: The present study identified the altered expression of hundreds of genes in HCECs exposed to PM2.5, which suggests the importance of PM2.5 for cornea health.

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