Mycoplasma anatis, a member of the class Mollicutes, is the causative agent of a contagious infectious disease of domestic ducklings, wild birds, and eggs. Increasing reports show that coinfection of M. anatis with Escherichia coli results in substantial economic impacts on the duck farms in China. Here, we announce the first genome sequence of M. anatis. ...[more]
Project description:Mycoplasma gallisepticum is a convenient model object for studying the regulation of transcription because it has a reduced genome, lack of cell wall and many metabolic pathways, and also easy to culture and non-pathogenic to humans. For rapid investigation of gene expression we developed microarray design including 3 366 probes for 678 genes. They included 665 protein coding sequences and 13 antisense RNAs from 816 genes and 17 ncRNAs present in Mycoplasma gallisepticum. This work was carried out transcriptomic profiling for different types of effects on the expression of genes of Mycoplasma gallisepticum: 1) genetic knock-out mutants; 2) cell culture exposed to sublethal concentrations of antibiotics; and 3) well-characterized heat stress effect. The study was performed on Agilent one-color microarray with custom design and random-T7 polymerase primer for cDNA synthesis. Using set of different probes for each gene or ncRNA allows to increase accuracy of gene expression quality. Overall design: Transcriptome profiling of 1) wild type Mycoplasma gallisepticum cell culture and mutants with transposone insertion to 5’ UTR of hypothetical protein GCW_03380, RBS of lactate dehydrogenase GCW_00390, helicase SNF2 GCW_03935, 1-deoxy-D-xylulose 5-phosphate reductoisomerase GCW_00495 or potential sigma factor GCW_00440 in exponential growth phase; 2) Mycoplasma gallisepticum cell culture under treatment with sublethal concentrations of carbonyl cyanide m-chlorophenylhydrazone (CCCP), novobiocin or tetracycline; and 3) Mycoplasma gallisepticum cell culture under heat stress at 46C during 15 min. All experiments were carried out in 2 biological replicates.
Project description:Various anti-mycoplasma drugs have different effects on cells growth We used microarrays to detail the global programme of gene expression underlying gastric cancer cells treated with anti-mycoplasma drugs and identified distinct classes of up-regulated genes during this process. Overall design: Gastric cancer cells treated with anti-mycoplasma drugs were selected for RNA extraction and hybridization on Affymetrix microarrays. We sought to obtain a disparate impact of gastric cancer cells treated with anti-mycoplasma drugs. To that end, we selected two cell lines of gastric cancer cell, AGS and BGC823, which were treated with four anti-mycoplasma drugs (A2PP, CIP, MYCO1 and MYCO2) separately.
Project description:To gain insight into ncRNAs functionality in bacteria, we studied the correlation of gene expression from Mycoplasma pneumoniae's ncRNAs with their overlapping ORFs over 10 different time points. This experiment contains RNAseq pair-end data from this 10 time points along Mycoplasma pneumoniae growth cycle.