Project description:Transcriptional profiling of early logarithmic phase culture (O.D=0.2-0.3) of Streptococcus mutans UA159 comparing control of untreated Streptococcus mutans UA159 bacteria with Streptococcus mutans UA159 bacteria spplemented with 20µM synthetic DPD (pre-AI-2) which regulates gene expression via AI-2 quorum sensing system.Three compairisons were performed at pHs of 7,6 and 5.
Project description:RNA-seq was performed to examine the overall gene expression in a S. mutans ΔSMU.1147 strain and to identify potential genes that can mainly contribute to the changes of gene expression in S. mutans. Using RNA-seq technique, the differentially expressed genes that are implicated in phenotypic changes of the ΔSMU.1147 strain were studied.
Project description:In this experiment we collected small molecule data that represent excreted molecules by Streptococcus mutans growing as a biofilm. The S. mutans biofilms were established and incubated in anaerobic conditions. Samples were collected before and after a drastic pH drop due to glucose amendments. Control samples are included in this folder that represent molecules that were extracted from sterilized growth media only. These peaks should be subtracted from the biofilm samples prior to analyses.
Project description:Transcriptional profiling to investigate the roles of ClpP and ClpX of S. mutans RNA was extracted from four replicate samples of each strain of interest and labeled with Cy3. For each replicate, labeled RNA was hybridized to slides along with Cy5-labeled reference RNA, extracted from S. mutans UA159 cells grown to mid-log.
Project description:Transcriptional profiling to investigate the regulatory roles of SpxA and SpxB of S. mutans. RNA was extracted from four replicate samples of each strain of interest (spxA mutant, spxB mutant, spxAB double-mutant, UA159 wild type) and labeled with Cy3. For each replicate, labeled RNA was hybridized to slides along with Cy5-labeled reference RNA, extracted from S. mutans UA159 cells grown to mid-log.
Project description:In the human pathogen Streptococcus mutans, the canonical peptide-based quorum sensing system is an inducible DNA repair system that is pivotal for bacterial survival. Previous work showed that the CSP signaling peptide is a stress-signaling alarmone that controls different stress-induced phenotypes. In this study, we exposed S. mutans to the CSP pheromone to mimic DNA damage conditions. Transcriptome analysis was then performed to evaluate the differential gene expression between the normal stationary phase cells and the CSP-induced stationary phase cells. The data obtained contribute to the understanding of the CSP-induced phenotypes in S. mutans.
