Project description:The Moutan Cortex Radicis (MCR) has been used as an analgesic, sedative and anti-inflammatory agent. This study investigated the changes in gene expression by MCR treatment when stimulated with lipopolysaccharide (LPS) in cultured human gingival fibroblasts (HGFs) and the gene expression changes by the MCR when challenged with LPS using a microarray chip.
Project description:Identification of mobile colistin resistance genes (mcr-1.1, mcr-5, mcr-8.1) in Enterobacteriaceae of human and animal origins, Nigeria.
Project description:The Moutan Cortex Radicis (MCR) has been used as an analgesic, sedative and anti-inflammatory agent. This study investigated the changes in gene expression by MCR treatment when stimulated with lipopolysaccharide (LPS) in cultured human gingival fibroblasts (HGFs) and the gene expression changes by the MCR when challenged with LPS using a microarray chip. Human gingival fibroblast were divided into three experimental groups; 1, C: Control, 2, LPS: LPS-treatment only, 3, MCR40: LPS- and MCR40-treatments. Total RNA was isolated from each experimental fibroblast (3 experimental group M-CM-^W 1 sample of each experimental group = total 3 samples).
Project description:Enterotoxin-producing C. perfringens type A is a common cause of food poisonings. The cpe encoding the enterotoxin can be chromosomal (genotype IS1470) or plasmid-borne (genotypes IS1470-like-cpe or IS1151-cpe). The chromosomal cpe-carrying C. perfringens are a more common cause of food poisonings than plasmid-borne cpe-genotypes. The chromosomal cpe-carrying C. perfringens type A strains are generally more resistant to most food-processing conditions than plasmid-borne cpe-carrying strains. On the other hand, the plasmid-borne cpe-positive genotypes are more commonly found in human feces than chromosomal cpe-positive genotypes, and humans seem to be a reservoir for plasmid-borne cpe-carrying strains. Thus, it is possible that the epidemiology of C. perfringes type A food poisonings caused by plasmid-borne and chromosomal cpe-carrying strains is different. A DNA microarray was designed for analysis of genetic relatedness between the different cpe-positive and cpe-negative genotypes of C. perfringens strains isolated from human, animal, environmental and food samples. The DNA microarray contained two probes for all protein-coding sequences in the three genome-sequenced strains (C. perfringens type A strains 13, ATCC13124, and SM101). The chromosomal and plasmid-borne C. perfringens genotypes were grouped into two distinct clusters, one consisting of the chromosomal cpe-genotypes and the other consisting of plasmid-borne cpe-genotypes. Analysis of the variable gene pool complemented with the growth studies demonstrate different carbohydrate and amine metabolism in the chromosomal and plasmid-borne cpe-carrying strains, suggesting different epidemiology of the cpe-positive C. perfringens strain groups.
Project description:To determine the total mRNA polyadenylated in E.coli, we transexpressed mammalian nuclear poly(a) binding protein in E.coli through plasmid and chromosomal integration. RNA Seq analysis revealed general upregulation of around 600 genes commonly in between chrosomal MG PABP and plasmid PABP. 32% of the commonly upregulated genes fall into stress response mRNAs.