Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Malaria Host Pathogen Interaction Center: Gene and exon transcript abundances of uninfected Macaca mulatta treated with pyrimethamine over 7 time points in a 100 day study

ABSTRACT: The Malaria Host-Pathogen Interaction Center (MaHPIC) is an inter-disciplinary NIH systems biology contract that utilizes multiple omics types (omics, clinical, and mathematical models), to iteratively test and develop hypotheses related to the complex host-parasite dynamics in the course of malaria infections in non-human primates with the goal of better understanding human disease. These data and metadata were produced by MaHPIC in collaborations between Emory University, Georgia Institute of Technology, and The University of Georgia as part of the MaHPIC contract (NIAID Contract: # HHSN272201200031C). Curation and maintenance of these data and metadata are the responsibility of the MaHPIC. Mary Galinski mgalins@emory.edu (MaHPIC Program Director), Jessica Kissinger jkissinger@uga.edu (MaHPIC Co-Program Director), Esmeralda Meyer evargas@emory.edu - MaHPIC Project Manager The experimental design of this pyrimethamine administration experiment with Macaca mulatta was approved by the Emory University Institutional Animal Care and Use Committee (IACUC) and is as follows. Five naive males (RCs13, RWr13, RUn13, RZe13 and RTi13) approximately 2 years of age were injected intravenously with a preparation of Anopheles dirus salivary gland material and then profiled for clinical and omic measurements over the course of a 100-day experiment. Samples were generated and analyzed as part of a multi-omic approach to understanding the effects that the anti-malarial drug pyrimethamine has on immune physiology in rhesus macaques (M. mulatta). There was no infection with Plasmodium parasites during this study. Whole blood and bone marrow RNA-Seq and plasma have been obtained for seven time-points before, during and after three rounds of drug administration. Samples are from either whole blood or bone marrow specimen types. 5 individuals were sampled for each specimen type, 7 times each over the 100 day experiment. 5 individuals * 2 specimen types * 7 time points = 70 samples. Biological samples (Whole Blood or Bone Marrow) were collected at 7 time points during the 100 days. These correspond to: Time Point 1 = Day 0 (Baseline Sampling Point) Time Point 2 = Day 21 Time Point 3 = Day 27 Time Point 4 = Day 52 Time Point 5 = Day 59 Time Point 6 = Day 90 Time Point 7 = Day 98 Pyrimethamine was administered on Days 21, 52, 53, 54, 90, 91, and 92.

ORGANISM(S): Macaca mulatta

SUBMITTER: MaHPIC Malaria Host-Pathogen Interaction Center

PROVIDER: E-GEOD-58340 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Project description:The objective of this study was to examine changes in muscle gene expression of growing steers during a period of dietary energy restriction followed by a period of realimentation. Crossbred Aberdeen Angus x Holstein Friesian (n = 24) steers were assigned to one of two feeding treatments. Over a 99 d period, 1 group (n=12) was offered a high energy control diet consisting of concentrates ad libitum and 7 kg of grass silage per head daily. The second group (n=12) was offered an energy restricted diet consisting of grass silage ad libitum plus 0.5 kg of concentrate per head per day. From the end of the differential feeding period (99 d), both groups of animals were offered a total mixed ration (grass silage:concentrate ratio of 80:20). This period, which lasted 200 d, was known as the realimentation period. All animals were slaughtered on d 299 of the study. Muscle biopsies were collected at 2 time points (end of the differential feeding period (d 99) and during the realimentation period (d131). RNA was extracted and muscle gene expression was examined using RNA-seq technology and bioinformatic analysis. During the differential feeding period, 17 over-represented pathways were identified, including the peroxisome proliferator activated receptor signalling, glycolysis/ gluconeogenesis and metabolic pathways controlling the metabolism of lipids and lipoproteins which indicate reduced energy intake and fat tissue accumulation occurring in muscle tissue during the restriction phase. During the realimentation period, 164 differentially expressed genes were annotated to 9 over-represented pathways including starch and sucrose metabolism, carbohydrate digestion and absorption and TGF-β signalling pathway. It is hypothesised that the signalling effects of the TGF-β pathway were reduced thereby promoting accelerated cell growth and proliferation in muscle tissue of animals experiencing compensatory growth. This information can be exploited in genomic breeding programmes to assist selection of cattle with a greater ability to compensate following a period dietary restriction. 24 muscle RNA samples were analysed in total. 6 samples were from muscle biopsies collected at the end of a period of dietary restriction (d99) and 6 samples were from muscle biopsies collected at the peak of compensatory growth (d131). In addition, RNA was also analysed from 6 samples collected from animals fed ad libitum at each of these two timepoints.

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Malaria Host Pathogen Interaction Center: Gene and exon transcript abundances of uninfected Macaca mulatta treated with pyrimethamine over 7 time points in a 100 day study

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