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Next-generation Sequencing

Next-generation Sequencing

The first human genome sequencing project cost $2.7 billion and was declared complete in 2003, after 15 years of international cooperation and collaboration between several research teams and funding agencies. Today, with the advent of next-generation sequencing technologies, the cost and time of sequencing a human genome have dropped over 100 fold.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features....

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Updated: Dec 21, 2025

Primer-Free Aptamer Selection Using A Random DNA Library

Primer-Free Aptamer Selection Using A Random DNA Library

Published on: July 26, 2010

Eliminating primer dimers and improving SNP detection using self-avoiding molecular recognition systems.

Zunyi Yang^1,2, Jennifer T Le¹, Daniel Hutter²

¹Foundation for Applied Molecular Evolution (FfAME), 13709 Progress Blvd, Box 7, Alachua, FL 32615, USA.

Biology Methods & Protocols

|May 13, 2020

Summary

Self-avoiding molecular recognition systems (SAMRS) primers prevent primer dimers in polymerase chain reaction (PCR) amplification. This innovation enhances single nucleotide polymorphism (SNP) detection sensitivity and multiplexing capabilities for molecular biology applications.

Keywords:

SNP detection allele-specific PCR diagnostics multiplex PCR primer dimer

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Detection of Rare Genomic Variants from Pooled Sequencing Using SPLINTER

Detection of Rare Genomic Variants from Pooled Sequencing Using SPLINTER

Published on: June 23, 2012

Area of Science:

Molecular Biology
Biochemistry
Genetics

Background:

Polymerase chain reaction (PCR) is crucial in molecular biology but faces challenges with primer-dimer formation, limiting sensitivity, SNP discrimination, and multiplexing.
Primer-dimers consume reagents and generate noise, hindering accurate molecular detection and analysis.
Existing PCR methods struggle to achieve high performance when high sensitivity, discrimination, and multiplexing are simultaneously required.

Purpose of the Study:

To investigate the utility of "self-avoiding molecular recognition systems" (SAMRS) in overcoming PCR limitations.
To evaluate the impact of SAMRS primers on primer-dimer formation, PCR efficiency, sensitivity, and SNP detection.
To establish design guidelines for SAMRS-modified primers for improved molecular diagnostics.

Main Methods:

Designed and synthesized PCR primers incorporating varying numbers and positions of SAMRS components.
Experimentally assessed the PCR performance of SAMRS primers, analyzing primer-dimer formation, efficiency, and sensitivity.
Quantified SAMRS:standard nucleotide pairing strengths to understand their contribution to primer behavior.

Main Results:

SAMRS primers effectively prevented primer-dimer formation, a common artifact in PCR.
SAMRS-based PCR demonstrated enhanced sensitivity and improved single nucleotide polymorphism (SNP) discrimination compared to conventional methods.
Strategic placement and number of SAMRS components influenced primer performance, with optimal configurations identified.

Conclusions:

Self-avoiding molecular recognition systems offer a robust strategy to enhance PCR performance by mitigating primer-dimer issues.
SAMRS primers enable more sensitive SNP detection and higher levels of multiplex PCR, advancing molecular biology tools.
The findings provide practical guidelines for designing SAMRS-modified primers, supporting applications in medical research and clinical diagnostics.