Project description:RNA sequencing was performed on E. coli K12 MG1655 on three media (M9, CA-MHB, R10LB) treated with four antibiotics (Ciprofloxacin, Trimethoprim-sulfamethoxazole, Ceftriaxone, Meropenem) at their media-specific MIC90s
Project description:Gene expression microarray was performed to assess the global changes coupled to targeted validation of proteomic profiling to reveal the broad anticancer activities of the immunosuppressive drug Mycophenolic acid (MPA) and elucidate the molecular mechanisms underlying these activities. We conducted gene expression microarray experiments on AGS cancers cells treated with Mycophenolic acid (MPA). A concentration of 2ug/ml was selected to treat AGS cells and the treated cells were harvested at 0, 12, 24, 48 and 72 hours of culture with the drug. Gene expression analyses were carried out using Illumina Human 12 Beadchips.
Project description:Gene expression microarray was performed to assess the global changes coupled to targeted validation of proteomic profiling to reveal the broad anticancer activities of the immunosuppressive drug Mycophenolic acid (MPA) and elucidate the molecular mechanisms underlying these activities.
Project description:To assay every gene in the E. coli genome to identify those that contribute to increased or decreased susceptibility to the antibiotics trimethoprim and sulfamethoxazole. This will help to define more accurately those bacterial cell mechanisms that contribute to these phenomena and provide information that will contribute to the development of new antibiotics, or compounds or known antibiotics that synergise with those already in clinical use. Thus, this set of experiments confirmed that AZT, widely known for its antiviral activity, acts synergistically with trimehoprim.
Project description:To understand the response of M. tuberculosis (MTB) to the drug sulfamethoxazole, we performed transcriptomics on MTB bacilli exposed to the drug.
Project description:Idiosyncratic drug-induced liver injury (DILI) is a rare, often difficult to predict adverse reaction with complex pathomechanisms. However, it is now evident that certain forms of DILI are immune-mediated and may involve the activation of drug-specific T-cells. Exosomes are cell-derived vesicles that carry RNA, lipids and protein cargo from their cell of origin to distant cells, and may play a role in immune activation. Herein, primary human hepatocytes were treated with drugs associated with a high incidence of DILI (flucloxacillin, amoxicillin, isoniazid and nitroso-sulfamethoxazole) to characterize the proteins packaged within exosomes that are subsequently transported to dendritic cells for processing. Exosomes measured between 50-100 nm and expressed CD63. LC-MS/MS identified an average of 1200 proteins across all exosome samples. Analysis of gene ontologies revealed that exosomes mirrored whole human liver tissue in terms of the families of proteins present, regardless of drug treatment. However, exosomes from nitroso-sulfamethoxazole-treated hepatocytes selectively packaged a specific subset of proteins. LC-MS also revealed the presence of hepatocyte-derived exosomal proteins covalently modified with amoxicillin, flucloxacillin and nitroso-sulfamethoxazole. Uptake of exosomes by monocyte-derived dendritic cells occurred mainly via phagocytosis, and was inhibited by latrunculin A. This study reveals that exosomes have the potential to transmit drug-specific hepatocyte-derived signals to the immune system and provides a pathway for the induction of drug hapten-specific T-cell responses.
Project description:This model was developed with the aim of constructing an equilibrium model of the pharmacokinetic behaviour of a drug exhibiting target-mediated drug disposition (TMDD). TMDD involves the inclusion of drug-target interactions within a pharmacokinetic description, something which is usually considered negligible and subsequently excluded. Two approaches were used, one of which involved a quasi-equilibrium method to describe the kinetics of TMDD.
Project description:The response of antibiotic adapted resistant mutants of B. cenocepacia J2315 to antibiotic stress was investigated using expression profiling of three biological replicates and comparing the profiles to the J2315 parent control grown without antibiotics.<br>A reference design was used with Cy3 labeled genomic DNA of B. cenocepacia J2315 as common reference. Three test conditions with three biological replicates each were compared to three replicates of the control condition.<br>Test conditions: J2315-A grown in the presence of 250 ug per ml amikacin, J2315-M grown in the presence of 8 ug per ml meropenem and J2315-T grown in the presence of 60 ug per ml trimethoprim and 300 ug per ml sulfamethoxazole.<br>Control condition: J2315 parent strain grown without antibiotics.
Project description:The effect of Mycophenolic acid on primary isolated human dermal microvascular endothelial (HDMVEC) and fibroblast cells as well as human glioblastoma brain tumor cell line (U87).
2008-06-25 | E-TABM-315 | biostudies-arrayexpress
Project description:Gut microbiota of broilers reared with and without trimethoprim-sulfamethoxazole treatment
