ABSTRACT: Molecular pathways underlying inhibitory effect of antimicrobial peptide Nal-P-113 on bacteria biofilms formation of Porphyromonas gingivalis W83 by DNA microarray
Project description:The role of ECF sigma factors PG0162, PG01660 were involved in virulence regulationin Porphyromonas gingivalis was published Yuetan Dou, Devon Osbourne, Rachelle McKenzie, Hansel M Fletcher. (2010) Involvement of extracytoplasmic function sigma factors in virulence regulation in Porphyromonas gingivalis W83. FEMS Microbiology Letter, 312(1):24-32.
Project description:To investigate the comprehensive function of trkA in Porphyromonas gingivalis W83, we established isogenic trkA deletion strain via homologous recombination and compared the transcriptional alteration between mutant and wild type group through RNA sequencing.
Project description:To study the expression profile of ECF sigma factor PG1660 mutant under anaerobic conditions and hydrogen peroxide stress conditions compared to the wild-type W83 by using DNA-microarray. The role of ECF sigma factor PG1660 involved in oxidative stress was published Yuetan Dou, Devon Osbourne, Rachelle McKenzie, Hansel M Fletcher. (2010) Involvement of extracytoplasmic function sigma factors in virulence regulation in Porphyromonas gingivalis W83. FEMS Microbiology Letter, 312(1):24-32.
Project description:The aim of this study is to determine the effects of different concentration Nal-P-113 in biofilm formation. Besides, we performed gene expression profiling in Nal-P-113-treated P. gingivalis W83 to delineate the underlying molecular mechanism of Nal-P-113-inhibited biofilm formation.
Project description:Porphyromonas gingivalis (P. gingivalis) W83 cultures in early exponential phase were supplemented with 0.1% galactose or vehicle control. The cultures were then permitted to grow anaerobically at 37°C for 3 hours, which corresponds to approximately one doubling of P. gingivalis. At this point, RNA extraction was performed using the cultures, and these samples were processed and submitted for RNA sequencing using an Illumina platform. Modest changes in gene expression were observed between cultures grown with or without galactose, and the majority of changes were associated with processes occurring at the cell membrane.
Project description:investigate the effects of salivary histatin 5 (Hst5) on Porphyromonas gingivalis (P. gingivalis) biofilms in vitro and in vivo and the possible mechanisms.
