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| Status |
Public on Mar 20, 2024 |
| Title |
Effect of stimulation with lipopolysaccharide (LPS) at 0,30, 60, and 120 minutes on miRNA expression in immortalized mouse macrophages (IMM). |
| Organism |
Mus musculus |
| Experiment type |
Non-coding RNA profiling by array
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| Summary |
The interactions between RNA and protein within cellular signaling pathways, known as the interactome, have modulatory effects on RNA binding proteins (RBP’s) effector functions, which contribute to post-transcriptional control of inflammatory cytokine release in the innate immune response. Post-translational modifications (PTMs) have a regulatory effect on a protein’s effector function. Thus, investigating the effect of RNA-protein interactions can answer questions central to our understanding of cellular signaling. Global RNA sequencing was used to investigate the differentially expressed (DE) genes from baseline following induction with LPS. Shotgun proteomics along with SILAC labeling was used to quantify relative abundance and differential protein expression in response to LPS. To assess the proteins interacting with RNA after LPS induction, total RNA associated protein purification was utilized. Using the tandem MS approach and methodology mentioned above, we were able to identify a list of candidate RNA binding proteins. Global RNA sequencing provided a baseline transcriptomic profile as well as quantification of DE genes across a stimulation time course (0, 30, 60 minutes). To investigate the discordance between the transcriptome and proteome, we performed miRNA sequencing at 0,30,60, and 120 minutes of LPS stimulation to assess expression changes in LPS induced miRNA’s which may regulate the transcriptome. We then handpicked potential RBPs of immunological interest (Il1a, MARCKS, and Acod1). Interestingly, Il1a, MARCKS, and Acod1 were all highly DE compared to baseline in the RNA Seq results and displayed a tendency to disassociate from RNA as the LPS time course pursued. Il1a, MARCKS, and Acod1 can all directly regulate pro-inflammatory gene expression in macrophages. These RBPs could offer a new regulatory mechanism to tune their effector function, which could lead to new therapeutic innovations for disease pathologies these proteins are implicated in. This research was supported by the Intramural Research Program of NIAID, NIH.
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| Overall design |
To investigate changes in the expressed miRNA's following stimulation with LPS, we examined 3 biological replicates per time point, where 0 minute was the control and 30, 60, and 120 minutes corresponded to the treated samples.
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| Contributor(s) |
Deepali R, Matthew MJ, Nita-Lazar A |
| Citation(s) |
38527097 |
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| Submission date |
Mar 18, 2024 |
| Last update date |
Jun 19, 2024 |
| Contact name |
Matthew James Marino |
| E-mail(s) |
matthew.marino@nih.gov
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| Phone |
301-761-6981
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| Organization name |
NIH
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| Department |
NIAID
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| Lab |
LISB
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| Street address |
9000 Rockville Pike
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| City |
Bethesda |
| State/province |
MD |
| ZIP/Postal code |
20815 |
| Country |
USA |
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| Platforms (1) |
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| Samples (12)
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| GSM8153076 |
IMM cells, 0 minute LPS stimulation Rep 1 |
| GSM8153077 |
IMM cells, 0 minute LPS stimulation Rep 2 |
| GSM8153078 |
IMM cells, 0 minute LPS stimulation Rep 3 |
| GSM8153079 |
IMM cells, 30 minute LPS Stimulation Rep 1 |
| GSM8153080 |
IMM cells, 30 minute LPS Stimulation Rep 2 |
| GSM8153081 |
IMM cells, 30 minute LPS Stimulation Rep 3 |
| GSM8153082 |
IMM cells, 60 minute LPS Stimulation Rep 1 |
| GSM8153083 |
IMM cells, 60 minute LPS Stimulation Rep 2 |
| GSM8153084 |
IMM cells, 60 minute LPS Stimulation Rep 3 |
| GSM8153085 |
IMM cells, 120 minute LPS Stimulation Rep 1 |
| GSM8153086 |
IMM cells, 120 minute LPS Stimulation Rep 2 |
| GSM8153087 |
IMM cells, 120 minute LPS Stimulation Rep 3 |
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| Relations |
| BioProject |
PRJNA1089212 |
| Supplementary file |
Size |
Download |
File type/resource |
| GSE261854_RAW.tar |
80.0 Kb |
(http)(custom) |
TAR (of RCC) |
| Raw data provided as supplementary file |
| Processed data included within Sample table |
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