Absolute Quantification of Bacteria in the Microbiome and Its Application

Area of Science:

• Genomics
• Molecular Biology
• Bioinformatics

Background:

• Traditional relative quantification methods offer limited precision.
• Genomics and deep sequencing enable advanced analytical techniques.
• Absolute quantification provides objective and precise sequencing outcomes.

Purpose of the Study:

• To present a straightforward and broadly applicable method for absolute genomic quantification.
• To demonstrate the utility of internal standards for accurate microbiome analysis.
• To highlight the benefits of absolute quantification over relative methods.

Main Methods:

• Incorporation of a specified amount of internal standard DNA into samples.
• Library construction and sequencing without post-sequencing adjustments.
• Assessment of internal standard DNA proportion to derive absolute quantification metrics.

Main Results:

• Absolute quantification delivers definitive measurements of genes or taxa.
• The internal standard method mitigates extraneous influences and reduces analytical errors.
• Sequencing data is transformed into absolute quantification metrics.

Conclusions:

• Absolute quantification enhances comprehension of microbial community structures and ecological dynamics.
• The internal standard method is versatile for disease diagnosis, microbial ecology, and environmental monitoring.
• This approach offers a more accurate and holistic perspective for microbiome research.