Project description:The idea was to examine the role of OxyR in control of the oxidative stress response of B. fragilis when exposed to either atmospheric oxygen, 5% oxygen atmosphere, or hydrogen peroxide Keywords: stress response
Project description:Investigation of whole genome gene expression level changes in a Bacteroides fragilis NCTC 9343 delta-ungD1 delta-ungD2 double mutant compared to the wild-type strain. Keywords: expression analysis A six chip study using total RNA recovered from three separate wild-type cultures of Bacteroides fragilis NCTC 9343 and three separate cultures of a double mutant strain, Bacteroides fragilis NCTC 9343 delta-ungD1 delta-ungD2, in which ungD1 (BF1706) and ungD2 (BF2848) are deleted. Each chip measures the expression level of 4,302 genes from Bacteroides fragilis NCTC 9343 and the associated plasmid pBF9343 with fourteen 24-mer probe pairs (PM/MM) per gene, with three-fold technical redundancy.
Project description:Investigation of whole genome gene expression level changes in a Bacteroides fragilis NCTC 9343 delta-gmd-fcl delta-fkp mutant strain and a Bacteroides fragilis NCTC 9343 delta-lfg mutant strain, each as compared to the wild-type strain. The mutations engineered into these strains interfere with B. fragilis protein glycosylation.
Project description:Genome expression study of Bacteroides fragilis ATCC25285 strain containing the EcfO gene constitutively expressed from plasmid pFD340
Project description:To elucidate whether Enterotoxigenic Bacteroides fragilis (ETBF) plays a role in colorectal cancer tumorigenesis, a RNA-seq analysis was performed to compare the gene expression profiles of ETBF treated DLD-1 colorectal cancer cell lines.
Project description:Genome expression study of Bacteroides fragilis strain 638R comparing an fur deletion mutant with the wild-type strain grown in minimal defined media with iron-replete, iron-limiting, heme-replete and heme-limiting conditions. The construction of the fur mutant analyzed in this study was described in Robertson KP, Smith CJ, Gough AM, Rocha ER. 2006. Characterization of Bacteroides fragilis hemolysins and regulation and synergistic interactions of HlyA and HlyB. Infect Immun. 74:2304-2316.
Project description:Investigation of whole genome gene expression level changes in a Bacteroides fragilis NCTC 9343 delta-ungD1 delta-ungD2 delta-PSH triple mutant, compared to the wild-type strain. The mutations engineered into this strain render it acapsular. The mutants analyzed in this study are further described in Coyne, M. J., M. Chatzidaki-Livanis, L. C. Paoletti, and L. E. Comstock. 2008. Role of glycan synthesis in colonization of the mammalian gut by the bacterial symbiont Bacteroides fragilis. PNAS 105(35):13098-13103 (PID 18723678). A six chip study using total RNA recovered from three separate wild-type cultures of Bacteroides fragilis NCTC 9343 and three separate cultures of a triple mutant strain, Bacteroides fragilis NCTC 9343 delta-ungD1 delta-ungD2 delta-PSH, in which ungD1 (BF1706), ungD2 (BF2848), and six genes (BF3454 through BF3459) of the PSH capsular polysaccharide locus are truncated or deleted entirely. Each chip measures the expression level of 4,302 genes from Bacteroides fragilis NCTC 9343 and the associated plasmid pBF9343 with fourteen 24-mer probe pairs (PM/MM) per gene, with three-fold technical redundancy.
Project description:Genome expression study of Bacteroides fragilis strain 638R comparing a EcfO null mutant with an empty vector to a anti-EcfO null mutant containing the EcfO gene on a plasmid under the control of an IPTG inducible promoter.
Project description:Comparison of transcriptional profile of wild-type and bmoR mutant strains of Bacteroides fragilis grown under anaerobic conditions and after exposure to atmospheric oxygen for 1 hour.
