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Related Concept Videos

DNA Isolation01:24

DNA Isolation

DNA isolation protocols can be fast and straightforward or complex and time-consuming depending on the type and quality of DNA required for further processing. For example, plasmid DNA extraction is a bit more complicated than genomic DNA extraction because of the need for an appropriate lysis method to separate plasmid DNA from gDNA during isolation. However, for specific applications, such as long-range DNA sequencing that require a good yield of high- quality DNA samples, we need to follow...

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Application of DNA Fingerprinting using the D1S80 Locus in Lab Classes
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Published on: July 17, 2021

DNA amplification using phi29 DNA polymerase validates gene polymorphism analysis from buccal mucosa samples.

Ryoji Taniguchi1, R Taniguchi, Chihiro Masaki

  • 1Department of Oral Reconstruction and Rehabilitation, Kyushu Dental College, Graduate School, Japan.

Journal of Prosthodontic Research
|February 8, 2011
PubMed
Summary
This summary is machine-generated.

This study introduces a painless method for amplifying DNA from buccal mucosa samples using phi29 DNA polymerase. This technique enables successful gene polymorphism analysis, overcoming limitations of traditional blood sampling and low DNA yields from oral swabs.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Biotechnology

Background:

  • Venous blood DNA extraction for gene polymorphism screening is invasive and challenging in dental settings.
  • Buccal mucosa offers an alternative DNA source, but low sample yields hinder amplification and analysis.
  • Existing methods face difficulties in obtaining sufficient DNA quantity and quality from oral samples.

Purpose of the Study:

  • To establish a reliable method for total genomic DNA amplification from buccal mucosa samples.
  • To utilize phi29 DNA polymerase for efficient amplification of DNA from minimally invasive oral samples.
  • To assess the suitability of amplified buccal DNA for gene polymorphism genotyping.

Main Methods:

  • Isolation of total genomic DNA from buccal mucosa samples of healthy subjects.
  • Amplification of extracted DNA using phi29 DNA polymerase.
  • Genotyping of the IL-1 gene polymorphism via polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP) analysis.

Main Results:

  • Successful genotyping of the IL-1 gene polymorphism was achieved using phi29 DNA polymerase-amplified buccal DNA.
  • Unamplified control samples yielded insufficient DNA purity for successful genotyping.
  • The buccal mucosa DNA extraction method proved painless, simple, minimally invasive, and rapid.

Conclusions:

  • Phi29 DNA polymerase effectively amplifies genomic DNA from buccal mucosa samples in sufficient quantity and quality.
  • This method provides a viable, less invasive alternative to venous blood sampling for gene polymorphism analysis.
  • The established technique supports routine genetic analysis in general dental practice.