Project description:Streptococcus equi subspecies equi, strain 1691 grown on COBA streptococcal selective agar shows classical mucoid colony morphology in addition to a reduced capsule phenotype. This project aimed to identify changes in the transcriptional profile between the two morphologies.
Project description:Aim of this project is to characterize colony morphology in the M28 strain, identifying the peculiar genomic traits determining the rough phenotype
Project description:Studies on S. aureus sub-populations revealed that genomes are well conserved between isolates from the same lineages despite geographic, temporal and selective diversity. However, variation of hundreds of genes can occur between isolates from different lineages and these genes could be involved in interaction with host components. In this study, we aimed to investigate the diversity of secreted virulence factors in human and zoonotic S. aureus isolates from different clonal complexes. We focused on the S. aureus clonal complexes (CC) 8 and CC22 as dominant human lineages, and CC398 as dominant livestock-associated MRSA (LA-MRSA) which is disseminating rapidly. To study the diversity of secreted virulence factors, we compared their extracellular proteomes using label-free LC-MS/MS analysis. A common protein database was created based on DNA sequencing data and PAN genome IDs.
Project description:Choriodecidual infection is associated with preterm premature rupture of membranes (pPROM) and preterm birth. MicroRNAs (miRNAs) are small, non-coding RNAs that regulate gene expression and may be involved in the pathway leading to chorioamnion weakening following infection. The study objective was to determine if a miRNA profile in the chorioamnion is associated with Group B Streptococcal infection and membrane weakening.
Project description:DNA viruses, like poxviruses, possess a highly stable genome, suggesting adaption of virus particles to specific cell types is not restricted to genomic changes. Cowpox viruses (CPXV) are zoonotic poxviruses with an extraordinary broad host range, demonstrating their adaptive potential in vivo. To elucidate novel adaption mechanisms of poxviruses, we isolated CPXV particles from a rat and passaged them five times in a human (HEp-2) and a rat (Rat-2) cell line. Subsequently, we purified mature virions and compared the proteome of the non-passaged virions and each passage.
