Project description:Transcriptional profiling of adult males and females of the lymphatic dwelling filarial parasite Brugia malayi Keywords: Gender based transcripts, filaria
Project description:Transcriptional profiling of adult males and females of the lymphatic dwelling filarial parasite Brugia malayi Keywords: Gender based transcripts, filaria Three biological replicates of male and female RNA used for hybridization to examine the gender-specifc transcripts
Project description:High-throughput sequencing to profile the transcriptome of the human filarial nematode Brugia malayi, the causative agent of lymphatic filariasis, across multiple life-cycle stages.
Project description:Brugia malayi is a parasitic nematode that causes lymphatic filariasis in humans. A total of 178 novel microRNA were identified from short read transcriptional data, which when combined with known Brugia microRNAs yielded a total of 284 microRNA. Of these, 123 microRNA sequences (43%) are differentially expressed over the mammalian life stages of B. malayi that we examined. Putative targets of these microRNA were identified from inversely expressed target clusters that contain valid seed sequences for the corresponding microRNAs. The largest identified cluster is downregulated in adult females and enriched in zinc finger domains, helicase domains, and DNA binding domains suggesting this microRNA cluster may have regulatory control over a large proportion of adult female specific mRNA genes. MicroRNA-like molecules are identified as produced by the Wolbachia endosymbiont, providing evidence for direct nucleic acid-based interdomain communication between filarial nematodes and their bacterial obligate endosymbiont.
Project description:Microarray technology permits high throughput comparisons of gene expression in different parasite stages or sexes. We now report the first use of this technology for analysis of gene expression in filarial worms. The slide array (comprised of 65 mer oligos representing 3569 EST clusters) was spotted with sequences selected from the extensive Brugia malayi EST database (http://nema.cap.ed.ac.uk/nematodeESTs/nembase.html#Annotation). Arrays were hybridized with male and female cDNA and developed with Cy5- and Cy3-fluorescent 3DNA capture reagents. The experimental design included both biological and technical (dye-flip) replicates. Keywords: repeat sample
Project description:Female worms (Brugia malayi) were collected from infected jirds treated with 2.5 mg/ml tetracycline in drinking water for 7, 14, or 21 days to eliminate the worm's endosymbiont, Wolbachia.<br>Control age matched female worms were recovered from infected jirds given normal water for drinking.<br>The Filarial Nematode Oligonucleotide Array (version 2) was used in hybridization analyses on cDNA generated from extracted total RNA.<br>Each microarray was hybridized with a mixture of control and experimental cDNA differentially labeled with Cy3 and Cy5 in a flip-dye experiment.<br>Gridding and analysis of images were performed using ScanArray v3.0, each spot defined pixel-by-pixel using a modified Mann-Whitney test, and the resulting values processed with Gene-Spring 7.1 software.
