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Bacterial RNA Isolation From Infected Eukaryotic Hosts

o mix was left out of the reaction. RNA was precipitated and an equal fraction of each sample was analyzed by denaturing agarose gel electrophoresis.


MICROBEnrich Will Work With Any Bacterial Species
MICROBEnrich was optimized using E. coli RNA in a background of human, mouse and rat RNA. However, the kit should perform well with RNA from any bacterial species. Although many mammalian host species may be compatible with MICROBEnrich, only human, mouse and rat rRNA sequences were used for the design and optimization of the capture oligonucleotides.


Increased Sensitivity in Downstream Analyses

Bacterial mRNAs purified with the combined MICROBEnrich and MICROBExpress Kits serve as better templates than total RNA for downstream applications and therefore deliver dramatic increases in sensitivity when used in applications such as array analysis. Figure 3 shows Sigma-Genosys Panorama E. coli arrays that were hybridized with labeled cDNA derived from either a mixed population of total RNA (E. coli/HeLa cell RNA mixture) or mRNA purified from the mixture using the MICROBEnrich and MICROBExpress Kits. The number of transcripts detected with labeled RNA target increases substantially after bacterial mRNA enrichment using the MICROBEnrich and MICROBExpress Kits.

Figure 3. Enrichment for Bacterial mRNA Results in More Sensitive Array Analysis. Replicate portions of Sigma/Genosys E. coli Panorama arrays were hybridized under identical conditions with 33P-labeled cDNA s
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