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Updated: Jun 13, 2026
12:37
Pyrosequencing for Microbial Identification and Characterization
Published on: August 22, 2013
Titration-free massively parallel pyrosequencing using trace amounts of starting material.
Zongli Zheng1, Abdolreza Advani, Ojar Melefors
1Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden. zhengzongli@gmail.com
Nucleic Acids Research
|May 4, 2010
Summary
This study introduces a quantitative polymerase chain reaction (qPCR) method to precisely measure effective sequencing libraries. This approach enables reliable next-generation sequencing even with minimal starting material, like precious clinical samples.
Area of Science:
- Molecular Biology
- Genomics
- Biotechnology
Background:
- Next-generation sequencing (NGS) methods require optimization for robustness and low-input applications.
- Traditional library preparation methods can reduce yield, especially with limited starting material.
Purpose of the Study:
- To develop a sensitive method for quantifying effective sequencing libraries.
- To enable robust NGS applications using trace amounts of starting material.
Main Methods:
- Application of double-stranded library preparation protocols for the Roche 454 platform.
- Utilization of Taqman MGB-probe-based quantitative polymerase chain reaction (qPCR) for library quantification.
- Demonstration of Poisson distribution for library molecule distribution on capture beads.
Main Results:
- The MGB-probe qPCR method can detect as few as 100 copies of effective library molecules.
- Quantification of effective library molecules that form functional clones in emulsion PCR.
- Validation of Poisson distribution for library molecule distribution on capture beads.
Conclusions:
- Combining qPCR with Poisson statistics eliminates the need for labor-intensive titration.
- This method facilitates NGS applications on precious clinical samples, small tissue transcriptomes, and low-biomass metagenomics.
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