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Abstract

<p>These heat maps demonstrate the gene expression profiles for two cohorts: (A) melioidosis and (B) tuberculosis. The 86 genes displayed are those identified by Berry <i>et al. </i><a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0054961#pone.0054961-Berry1" target="_blank">[7]</a> as being specific for tuberculosis, after excluding genes differentially regulated in other infections (<i>Staphylococcus aureus</i> and Group A Streptococcus) and inflammatory conditions (adult onset Still’s disease and systemic lupus erythematosus). Each column in the heat map is the gene expression profile of an individual, with control subjects on the left and patients on the right. Each cell within the heat map is the expression of a single gene: orange genes are upregulated and purple genes are downregulated, with expression normalized across the rows. We used this 86-gene signature to cluster study participants into two groups (marked black and red in the coloured banner at the top of each heat map). In the tuberculosis cohort, three controls clustered with the patients, and two patients clustered with the controls. In the melioidosis cohort, the same 86-gene signature also allowed us to distinguish controls and patients, with the exception of four patients who clustered with the controls. Despite the same microarray platform being used, the two cohorts were assayed as separate batches, so the absolute fluorescence intensities are different, making a direct comparison of melioidosis and tuberculosis impossible. All patients were therefore compared to their own controls.</p

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Last time updated on 16/03/2018

This paper was published in FigShare.

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