Project description:Hypericum perforatum extracts have been used as dietary supplements to treat conditions including mild-moderate depression and inflammation. A group of four bioactive constituents were identified from an active fraction of the extract. In order to identify the mechanism for the potential anti-inflammatory activity of the identified compounds, we used Affymatrix microarray to study the gene expression profile impacteded by these compounds, as well as the active fraction in LPS-stimulated mouse macrophages. We treated RAW264.7 mouse macrophages with DMSO control, active fraction from Hypericum perforaum extract, and a combination of the 4 putative bioactive compounds, called the 4-component system, all with and without LPS induction. A total of six treatment combinations were included in the final gene expression analysis using microarray.
Project description:Hypericum perforatum extracts have been used as dietary supplements to treat conditions including mild-moderate depression and inflammation. A group of four bioactive constituents were identified from an active fraction of the extract. In order to identify the mechanism for the potential anti-inflammatory activity of the identified compounds, we used Affymatrix microarray to study the gene expression profile impacteded by these compounds, as well as the active fraction in LPS-stimulated mouse macrophages.
Project description:To identify the potential Nucleolin binding proteins, we performed co-immunoprecipitation assay in 12 h LPS-stimulated RAW 264.7 macrophages.
Project description:Triplicate samples of RAW 264.7 murine macrophages either untreated, stimulated with 100 ng/ml LPS for 18 hours, or constituitively over-expressing CstF-64 were analyzed by microarray using Affymetrix murine gene chip 430A. Keywords = RAW 264.7 macrophages Keywords = LPS Keywords = CstF-64 Keywords: repeat sample
Project description:Triplicate samples of RAW 264.7 murine macrophages either untreated, stimulated with 100 ng/ml LPS for 18 hours, or constituitively over-expressing CstF-64 were analyzed by microarray using Affymetrix murine gene chip 430A.
Project description:Despite increasing evidence to indicate that long non-coding RNAs (lncRNAs) are novel regulators of immunity, there has been no systematic attempt to identify and characterise the lncRNAs whose expression are changed following the induction of the innate immune response. To address this issue, we have employed next generation sequencing data to determine the changes in the lncRNA profile in LPS-stimulated human macrophages, IL1beta-stimulated human airway A549 epithelial cells and and LPS-stimulated mouse RAW 264.7 macrophages
Project description:The involvement of m6A modification in macrophage activation has been validated in our study that the expression of TNF-α in Mettl3-depleted Raw 264.7 cells stimulated with LPS were markedly reduced in comparison to control cells. To further explore the biological effects of m6A deficiency macrophages, we performed RNA sequencing analysis of Mettl3-KO and WT control Raw 264.7 cells upon LPS treatment. The GO enrichment analysis documented that the downregulated transcripts in Mettl3-KO Raw 264.7 cells were enriched in innate immune response related to defense and external stimulus. Notably, transcripts of the downstream components of the TLR4 signaling pathway, such as proinflammatory cytokines (Tnf-α, Il-6, Il-1β, Il-18,and Il-23) and co-stimulation molecules (Cd86), were downregulated in Mettl3-deficient cells, suggesting that METTL3 has a critical function in controlling the innate immune response of Raw 264.7 macrophages.
