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Leishmania mexicana

ABSTRACT: Leishmania mexicana Transcriptome or Gene expression

PROVIDER: PRJNA259550 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR1562820.fastq.gz	Fastqsanger.gz
	SRR1562819.fastq.gz	Fastqsanger.gz

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Transcript abundance comparison between BALB/c ears inoculated with Leishmania mexicana and Leishmania mexicana plus promastigote secretory gel (PSG)

Project description:To determine the modulation of gene expression of Leishmania mexicana(M379)-inoculated BALB/c ears in the presence of promastigote secretory gel (PSG) A genome-wide transcriptional analysis was performed by comparing the gene expression profiles of Leishmania mexicana- inoculated BALB/c ears and Leishmania mexicana plus PSG BALB/c ears. Leishmania mexicana amastigotes were purified from mouse cutaneous lesions and transformed in vitro in metacycic promastigotes (MT). After 6, 24 and 48 hours, ears were collected and processed for RNA extraction. Three Biological replicates per condition were run.

2013-12-17 | E-GEOD-52101 | biostudies-arrayexpress

Transcript abundance comparison between BALB/c ears inoculated with Leishmania mexicana and Leishmania mexicana plus promastigote secretory gel (PSG)

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Leishmania mexicana

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Expression profiling reveals differential gene expression Leishmania mexicana

Project description:We examined the Leishmania mexicana transcriptome to identify differentially regulated mRNAs using high-density whole-genome oligonucleotide microarrays designed from the genome data of a closely related species, Leishmania major. Statistical analysis on array hybridization data representing 8156 predicted coding regions revealed 288 genes (3.5% of all genes) whose steady-state mRNA levels meet criteria for differential regulation between promastigotes and lesion-derived amastigotes. Interestingly, sample comparison of promastigotes to axenic amastigotes resulted in only 17 genes (0.2%) that meet the same statistical criteria for differential regulation. The reduced number of regulated genes is a consequence of an increase in the magnitude of the transcript levels in cells under axenic conditions. The expression data for a subset of genes was validated by quantitative PCR. Our studies show that interspecies hybridization on microarrays can be used to analyze closely related protozoan parasites, that axenic culture conditions may alter amastigote transcript abundance, and that there is only a relatively modest change in abundance of a few mRNAs between morphologically distinct promastigote and amastigote cultured cells. Leishmania may represent an alternative paradigm for eukaryotic differentiation with minimal contributions from changes in mRNA abundance. Keywords: RNA expression profiling

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