Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Genome-wide analysis of monocytes and T cells' response to interferon beta

ABSTRACT: The research hypothesis was that the unique expression profile of monocytes in response to Interferon-beta (IFN-Î²) might be masked by the response profile of the more abundant T cells. The analysis of monocytes response may highlight novel IFN-Î² functions and pathways that have not been recognized previously. The aim of this study was to characterized the IFN-Î² transcriptional response in monocytes, a small but influential cell-subset, using gene expression profile and pathway analysis. The expression profiles of purified human monocytes and T cells pulse with IFN-Î² overnight were compared, and revealed 276 and 42 Differentially Expressed Genes (DEGs) in monocytes and T cells respectively, with only 5 genes common to both sets. Many of the DEGs detected in monocytes were novel with respect to the recognized IFN-Î² response, and included genes involved in immune-specific activities, communication between cells, regulation of apoptosis, cell migration, and protein translation. Network and pathway analysis of the T cells response revealed the familiar immune pathways, response to virus pathways, and IFN canonical pathway. In monocytes, however, we detected along with known IFN-Î²-related pathways, such as cell migration also pathways that had not been previously described in the context of IFN-Î² response, such as the High-Mobility Group Box-1 (HMGB1) signaling pathway. However, most DEGs in monocytes did not cluster to specific networks or canonical pathways. The monocyte-specific DEGs and pathways described herein are beyond the current knowledge regarding the biology of the IFN-Î² response and the differential response to IFN-Î² of monocytes versus T cells described emphasizes the importance of cell-specific studies for elucidating the spectrum of cytokine-mediated immunomodulation. Monocytes and T lymphocytes were isolated from 3 healthy volunteers. For each sample the expression profile of untreated cells was compared to the profile of IFN-Î² treated cells, i.e. 4 samples from each donor (2 cell types, with and without treatment), 12 samples total.

ORGANISM(S): Homo sapiens

SUBMITTER: Noa Henig

PROVIDER: E-GEOD-34627 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

ACCESS DATA

Similar Datasets

Project description:Purpose：Next-generation sequencing (NGS) has revolutionized systems-based analysis of cellular pathways. PBMCs are important immune cells and effectively respond to IFN treatment. Therefore, the goals of this study are to compare the transcriptional profile of the goose IFN (goIFNα, goIFNγ and goIFNλ)-mediated immune response in PBMCs. Methods：Peripheral blood mononuclear cells (PBMCs) were stimulated with recombinant goIFN-α, γ and λ for 3 h, and those treated with cell lysates from pcDNA3.1 (+)-transfected BHK-21 cells were considered as control group. Cells were harvested with 1 mL RNAiso Plus reagent for RNA extraction. Obtained RNA quantity and quality were evaluated using NanoDrop, Qubit and Agilent 2100 Bioanalyzer. After qualification and quantification using an Agilent 2100 Bioanalyzer and ABI Step One Plus Real Time PCR System, the libraries were sequenced with Illumina HiSeqTM 2000. Results：Comparisons between IFN treatment groups and the control group were performed, and DEGs were analysed using the DESeq R package, a model based on the negative binomial distribution. For the statistical analysis, all read counts were normalized by calculating the FPKM value, and further, the FPKM + 1 values were log2 transformed and the means of expression (in log2 FPKMs) were used for further analysis. An P value < 0.05, which was adjusted by the false discovery rate (FDR), was defined as the threshold of DEGs, and log2-fold change ＞ 0 (or < 0) was defined as up-regulated (down-regulated genes). According to the results of DEG analysis, we selected 17 IFN‑responsive genes from the RNA-seq data for validation by RT-qPCR. Conclusion：Our study represents the first detailed analysis of the transcriptional profile of the goose IFN (goIFNα, goIFNγ and goIFNλ) immune response in PBMCs. The stimulation of goIFNs initiated a series of signalling cascades at early stages, leading to the transcriptional regulation of hundreds of DEGs, and each IFN induced a unique and partially overlapping set of ISGs. Most importantly, we identified approximately 101 immune-related genes, which were mainly involved in the toll-like receptor signalling pathway, JAK-STAT signalling pathway and antiviral pathway. Moreover, these results were verified by RT-qPCR, and the correlation analysis of RNA-Seq data and qRT-PCR results showed that some relevant relationships between candidate genes may be related to the balance of the host immune response, which remains to be further studied in the future.

Dataset Information

Genome-wide analysis of monocytes and T cells' response to interferon beta

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets