16S rRNA Primer Sets for Microbial Identification
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Solution Overview
Problem
Current methods for characterizing microbiomes face challenges due to the genetic variety of microorganisms, as standard culturing techniques are inefficient and direct profiling methods struggle with identifying species present in small numbers and distinguishing between microorganisms with varying 16S sequences.
Innovation Solution
The development of forward and reverse primer sets with domain-specific sequences complementary to conserved domains of 16S DNA sequences, specifically designed to generate frame-shifted amplicons covering V3, V4, and V5 regions, enhancing the detection and identification of microorganisms through PCR and subsequent sequencing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standard culturing techniques are used to identify microorganisms, then the process is simple and familiar, but only a small fraction of microorganisms can be successfully cultured and identified
Solution Approach 1:
The patent replaces traditional mechanical culturing methods with molecular biology techniques (PCR amplification and sequencing of 16S rRNA genes) to identify microorganisms. This substitution enables detection of microorganisms that cannot be cultured using conventional methods, significantly increasing detection coverage while maintaining identification accuracy through sequence analysis.
2Productivity
If direct profiling methods such as sequencing are used to characterize microbiomes, then detection coverage increases, but the ability to distinguish between microorganisms with varying 16S sequences and detect those present in small numbers remains insufficient
Solution Approach 1:
The patent applies local quality by designing primers that specifically target conserved regions of the 16S rRNA gene while enabling detection of variable regions. This approach allows the method to maintain high detection coverage across diverse microorganisms while achieving precise species identification through analysis of variable sequence regions that distinguish between different taxa.
Solution Approach 2:
The patent employs parameter changes by optimizing primer sequences, annealing temperatures, and PCR cycle conditions to enhance the detection of low-abundance microorganisms. These parameter adjustments improve measurement precision by enabling reliable detection and differentiation of species present in small numbers within complex microbiome samples.
3Adaptability or versatility
If multiple primer sets are designed to cover different variable regions, then taxonomic coverage increases, but the complexity of the amplification and sequencing process increases
Solution Approach 1:
The patent achieves universality by designing a single pair of primers that can amplify across multiple variable regions (V1-V9) of the 16S rRNA gene. This multi-functional primer design allows comprehensive taxonomic coverage of diverse microorganisms without requiring multiple separate primer sets, thereby reducing experimental complexity while maintaining broad adaptability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
These primer sets improve the sensitivity and specificity of microorganism detection, allowing for the identification of a greater number of species without the need for spike-in control DNA in sequencing, resulting in high-quality sequencing data and increased taxonomic coverage.
Implementation Method 1
a forward primer set in combination with a reverse primer set generate frame-shifted amplicons in a polymerase-chain reaction (PCR)
Data Source
AI summary
Disclosed herein are compositions with uniquely designed oligonucleotide primers for identifying a plurality of microorganisms in a sample, and improved methods for detection of microbial populations from diverse biological and environmental samples.