I get asked this question all the time and never no how to respond. May one of y'all knows the answer. If a person is preparing DNA, is it necessary to perform RNAse treatment prior to amplifying the 16S gene (say V4 to run on miseq)? Asked another way: will the presence of RNA interfere with or skew the community profile of DNA used for NGS metagenomic community profiling?
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For PCR based amplification of 16S variable regions RNase treatment usually is not necessary. It will impact correct quantification by spectrophotometric methods if it is included in the workflow. If the same extracted DNA will be used for other applications as well it is better to include RNase in one of extraction steps.
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NGS has revolutionized clinical microbiology by offering new ways to identify and surveil pathogens without prior knowledge of the target. One popular approach is 16S rRNA and ITS amplicon sequencing, which targets specific microbial markers. But studies are increasingly incorporating shotgun metagenomics, a technique that sequences all DNA from a sample without targeting specific microbial markers. This approach allows more detailed taxonomic classification, detection...Today, 06:46 AM -
Tumors contain complex mixtures of cell populations that evolve in response to treatment and host-specific factors. Tissue biopsies provide only static snapshots of a tumor’s state. But what if we could follow that evolution over time using a minimally invasive technique?
Liquid biopsies can detect tumor-derived material circulating in the bloodstream, providing a way to study treatment response, detect emerging resistance, and discover new biomarkers. Circulating...10-14-2026, 09:55 AM
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