Dataset Information

Multiple modes of interfering with the activity of Plasmodium falciparum cytoplasmic isoleucyl-tRNA synthetase illustrate the enzyme is a promising antimalarial target.

ABSTRACT: Here we interrogated the in vitro metabolic effects of 6 drugs using ultra-high performance liquid chromatography mass-spectrometry (UHPLC-MS). The resulting metabolic fingerprints provide information on the parasite biochemical pathways affected by pharmacologic intervention. We interrogate the metabolic effects on the 3D7 parasite strain. The metabolic effects were compared to their parent strain. The metabolic fingerprints provided show that certain biochemical pathways are affected by the drug inhibitory effect.

ORGANISM(S): Plasmodium Falciparum

TISSUE(S): Cultured Cells

DISEASE(S): Malaria

SUBMITTER: Manuel Llinas

PROVIDER: ST002078 | MetabolomicsWorkbench | Mon Dec 06 00:00:00 GMT 2021

REPOSITORIES: MetabolomicsWorkbench

ACCESS DATA

Dataset's files

Source:

			Action	DRS
	mwtab	Other

Items per page:

1 - 1 of 1

Similar Datasets

Project description:The recent development of a custom cDNA microarray platform for one of thé standard organisms in aquatic toxicology, Daphnia magna, opened up new ways to mechanistic insights of toxicological responses. In this study, gene expression and (sub)organismal responses (Cellular Energy Allocation, growth) were assayed after short-term waterborne metal exposure. Microarray analysis of Ni-exposed daphnids revealed several affected functional gene classes, of which the largest ones were involved in different metabolic processes (mainly protein and chitin related processes), cuticula turnover, transport and signal transduction. Furthermore, genes involved in oxygen transport and heme metabolism (hemoglobin, δ-aminolevilunate synthase) were down-regulated. Applying a Partial Least Squares regression on nickel fingerprints and biochemical (sub)organismal parameters revealed a set of co-varying genes (hemoglobin, RNA terminal phosphate cyclase, a ribosomal protein and an “unknown” gene fragment). An inverse relationship was seen between the mRNA expression levels of different cuticula proteins and available energy reserves. In addition to the nickel exposure, daphnids were exposed to binary mixtures of nickel and cadmium or nickel and lead. Using multivariate analysis techniques, the mixture gene expression fingerprints (Ni2++Cd2+, Ni2++Pb2+) were compared to those of the single metal treatments (Ni2+, Cd2+, Pb2+). It was hypothesized that the molecular fingerprints of the mixtures would be additive combinations of the gene expression profiles of the individual compounds present in the mixture. However, our results clearly showed additionally affected pathways after mixture treatment (e.g. additional affected genes involved in carbohydrate catabolic processes and proteolysis), indicating interactive molecular responses which are not merely the additive sum of the individual metals. These findings, although indicative of the complex nature of mixture toxicity evaluation, underline the potential of a toxicogenomics approach in gaining more mechanistic information on the effects of single compounds and mixtures.

Dataset Information

Multiple modes of interfering with the activity of Plasmodium falciparum cytoplasmic isoleucyl-tRNA synthetase illustrate the enzyme is a promising antimalarial target.

Dataset's files

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets