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:Wild type Porphyromonas gingivalis strain ATCC33277 (V3176) and PG1626 - deficient mutant (V3177) were grown in iron replete conditions was used to compare to Porphyromonas gingivalis strains grown in iron chelated conditions.
Project description:Transcriptional profiling of the wild-type and its htrA mutant. Identification of genes that are affected by the htrA mutation in P. gingivalis Keywords: Genetic modification Two-condition experiment, W83 vs. htrA mutant late-log growth phase. Biological replicates: 4 control, 4 mutant, independently grown. One replicate per array.
Project description:RNA-Seq of wild-type Porphyromonas gingivalis compared to ΔPGN_1524 mutant Illumina based RNA-Seq was used to probe transcriptome differences between wild-type Porphyromonas gingivalis and ΔPGN_1524 mutant
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:The aim of the study was to identify the role of flavodoxin gene in the virulence of P. gingivalis W83.The mRNA profiles of P. gingivalis W83 and flavodoxin mutant strain were generated by deep sequencing, in triplicate, using Illumina sequencing platform. Differential expression analysis of two groups (Three biological replicates per group) was performed using the DESeq R package. In total, 376 genes met the DEGs criteria (194 upregulated genes and 182 down-regulated genes). The KEGG pathway analysis indicated the DEGs were significantly enriched in three KEGG pathways, comprising pathways associated with Peroxisome, Two-component system and Quorum sensing.Importantly, we found that the flavodoxin gene can regulate the type IX secretion system and oxidative stress system in P. gingivalis W83. The knowledge obtained will help us to deeply understand the role of flavodoxin gene in the P. gingivalis W83 genome.
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.
