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Related Concept Videos

Single Nucleotide Polymorphisms-SNPs01:05

Single Nucleotide Polymorphisms-SNPs

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A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...
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Comparing Copy Number Variations and SNPs02:26

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Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
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Updated: Jul 15, 2025

The Visual Colorimetric Detection of Multi-nucleotide Polymorphisms on a Pneumatic Droplet Manipulation Platform
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Recent Progress in Single-Nucleotide Polymorphism Biosensors.

Kaimin Wu1, Feizhi Kong1, Jingjing Zhang1

  • 1Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou 412007, China.

Biosensors
|September 27, 2023
PubMed
Summary
This summary is machine-generated.

Single-nucleotide polymorphisms (SNPs) are key genetic variations impacting health. This review explores advanced fluorescent and electrochemical biosensing methods for accurate and cost-effective SNP detection, crucial for personalized medicine.

Keywords:
SNPsbiosensorelectrochemistryfluorescencequartz crystal microbalance (QCM)

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Area of Science:

  • Biochemistry
  • Genetics
  • Biotechnology

Background:

  • Single-nucleotide polymorphisms (SNPs) represent the most common genetic variations in humans, influencing individual differences and disease susceptibility.
  • SNPs are vital genetic markers linked to various diseases, including malignancy, cardiovascular disease, and autoimmune disorders, necessitating accurate identification for clinical applications.
  • Current SNP detection methods face challenges in simplicity, cost-effectiveness, specificity, and avoiding complex reagents or toxic compounds.

Purpose of the Study:

  • To provide a comprehensive overview of recent advancements in SNP biosensing technologies.
  • To focus on improvements in fluorescent and electrochemical biosensing methods for SNP detection.
  • To analyze the detection limitations, advantages, disadvantages, and challenges associated with these novel biosensing approaches.

Main Methods:

  • Review of recent scientific literature on SNP biosensing.
  • Analysis of novel designs in fluorescent biosensing for SNP detection.
  • Evaluation of novel designs in electrochemical biosensing for SNP detection.

Main Results:

  • Recent advancements have introduced novel designs in both fluorescent and electrochemical SNP biosensing.
  • These improved methods aim to overcome the limitations of traditional techniques, offering enhanced specificity and sensitivity.
  • The review details the specific advantages, disadvantages, and detection limitations of the presented novel biosensing strategies.

Conclusions:

  • Fluorescent and electrochemical biosensing methods show significant promise for improved SNP detection.
  • Further development is needed to address remaining challenges in cost-effectiveness, operational simplicity, and reagent toxicity.
  • Optimized SNP detection is critical for advancing personalized medicine and understanding individual health.