Abstract:
Macrophage RAW264.7 stimulated with LPS is a model to learn about the mechanism of inflammation. It was used by several research groups for testing anti-inflammatory compounds by using microarray technology. This technique can simultaneously detect the response on whole cell in interesting condition by measurement of mRNA levels. There was a huge of submitted microarray datasets of LPS-stimulated macrophage in public database. These data can be used for analysis with several bioinformatics tools or system biology approach to investigate the mechanism of inflammatory response in murine macrophage. Gene selection, co-expression network, gene regulatory network, biological data integration, and biological interpretation techniques were used in this study for finding some interested modules and their responsive genes. One selected inflammatory responsive gene, SOCS3, has already validated with real-time PCR to measure its expression level on time-series. SOCS3 is gene that encoded for suppressor of cytokine signaling protein which is negative regulator of immune responses. In conclusion, system biology can be used to discovered more knowledge which are concealed under a huge of data that cannot be found by conventional methods. This leads to find a novel responsive gene from the traditional public microarray data that make a new model for understanding the mechanism of inflammatory response.