Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Gene expression during ligands activation of RXR in activated RAW264.7 cells

ABSTRACT: Ligands activation of RXR modulate host antivarl response. We used microarray to determine if 9cRA could regulate the antiviral gene expression in LPS- and polyI:C triggered RAW264.7 cells. RAW 264.7 cells were pre-treated with DMSO or 100nM of 9cis-retinoic acid for 16hours. The cells were then stimulated with polyI:C (6ug transfected) or LPS (500ng/mL) for 2 hours.

ORGANISM(S): Mus musculus

SUBMITTER: feng ma

PROVIDER: E-GEOD-62107 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

ACCESS DATA

Publications

Retinoid X receptor α attenuates host antiviral response by suppressing type I interferon.

Ma Feng F Liu Su-Yang SY Razani Bahram B Arora Neda N Li Bing B Kagechika Hiroyuki H Tontonoz Peter P Núñez Vanessa V Ricote Mercedes M Cheng Genhong G

Nature communications 20141124

The retinoid X receptor α (RXRα), a key nuclear receptor in metabolic processes, is downregulated during host antiviral response. However, the roles of RXRα in host antiviral response are unknown. Here we show that RXRα overexpression or ligand activation increases host susceptibility to viral infections in vitro and in vivo, while Rxra-/- or antagonist treatment reduces infection by the same viruses. Consistent with these functional studies, ligand activation of RXR inhibits the expression of a ...[more]

PMID: 25417649

Similar Datasets

Project description:Background: Toll-like family of receptors recognizes pathogen-associated molecular patterns (PAMPs) from different organisms. TLR4 is the receptor for bacterial lipopolysaccharide (LPS), dsRNA viral mimic poly(I:C) binds to TLR3, and bacterial CpG DNA signals through TLR9. TLR4 signaling is mediated by adaptor molecules Myd88 and TRIF while TLR3 pathway involves only the TRIF adaptor and TLR9 signals solely through Myd88. Methods: To identify genes other than those in TLR pathways that mediate macrophage response to different PAMPs, RAW264.7 cells were stimulated with LPS, poly(I:C), or CpG DNA, and RNA was profiled on microarrays 6 hrs and 24 hrs post-treatment. Gene expression data were analyzed to determine genes, pathways and transcriptional networks that are in common and unique to each of the three TLR stimuli. Potentially novel candidates revealed by this analysis were tested for their role in innate immunity using RNA interference. Results: Many genes are differentially regulated by LPS and poly(I:C) at both 6 hrs and 24 hrs following treatment, while CpG DNA elicits a much less pronounced transcriptional response. By analyzing gene expression data for networks and pathways, we prioritized differentially expressed genes that are in common to all three PAMPs as well as those shared by LPS and poly(I:C). Knockdown by RNA interference of two genes, Plec1 and TPST1, inhibited production of IL-6 in response to LPS in cultured macrophages. Conclusions: We have identified novel innate immunity genes that may be important in macrophage response to LPS, poly(I:C), and CpG DNA stimuli. Our results provide potential biomarkers and therapeutic targets that should be further investigated in mice and human populations. Keywords: time course For each treatment (Sigma LPS, LIST LPS, and media only), three biological replicates (separate macrophage cultures and RNA isolations) were profiled. Each sample was labeled with Cy3 and Cy5 and co-hybridized with Stratagene Universal Mouse Reference (dye flip techical replicates). Expression at 2 timepoints (6 and 24 hours post-treatment) was assessed.

Dataset Information

Gene expression during ligands activation of RXR in activated RAW264.7 cells

Publications

Retinoid X receptor α attenuates host antiviral response by suppressing type I interferon.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets