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Corticosteroid Sensitivity and the Effect of Th1 and Th17 Cytokines on Gene Expression in Human Airway Smooth Muscle

ABSTRACT: Corticosteroid Sensitivity and the Effect of Th1 and Th17 Cytokines on Gene Expression in Human Airway Smooth Muscle

PROVIDER: PRJNA743333 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR15031024_1.fastq.gz	Fastqsanger.gz
	SRR15031024_2.fastq.gz	Fastqsanger.gz
	SRR15031025_1.fastq.gz	Fastqsanger.gz
	SRR15031025_2.fastq.gz	Fastqsanger.gz
	SRR15031026_1.fastq.gz	Fastqsanger.gz

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Corticosteroid Sensitivity and the Effect of Th1 and Th17 Cytokines on Gene Expression in Human Airway Smooth Muscle

Project description:Purpose: Using RNA-sequencing, determine the effect of corticosteroids on human airway smooth muscle cells (ASM) exposed to Th1 and/or Th17 cytokines. Effects of cytokines and/or corticosteroids on gene expression was assessed. Methods: Pediatric human ASM (ages 0-21; n=4/treatment group) were serum starved for 48 h and then treated with 10 ng/mL TNFα, IFNγ, IL-17A, TNFα/IFNγ, or IFNγ/IL-17A in the presence of vehicle (0.01% DMSO) or 10 nM fluticasone propionate (FP). Cells were harvested after 18 h for RNA isolation, QC, library prep, and RNA sequencing on the Illumina HiSeq4000 platform. RNA quality and integrity was determined by gel electrophoresis and Agilent 2100 Bioanalyzer. Following sequencing. FASTQ files were processed and analyzed to generate counts files and perform differential expression analysis. Results: Our analyses show that cytokines, particularly TNFα, IFNγ, and TNFα/IFNγ had significant effects on gene expression. Differentially expressed genes were largely related to pro-inflammatory responses. Interestingly, we found that IL-17A had only modest effects on gene expression. Corticosteroids (FP) reduced or inhibited the effects of pro-inflammatory cytokines. However, these anti-inflammatory effects were reduced in cells treated with TNFα/IFNγ or IL-17A/IFNγ. Conclusions: These studies highlight the differential effects of pro-inflammatory cytokines and corticosteroids on gene expression in human ASM.

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