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MTHFR C677T polymorphism analysis: A simple, effective restriction enzyme-based method improving previous protocols.

Francesca Antonaros1, Giulia Olivucci1, Elena Cicchini1

  • 1Unit of Histology, Embryology and Applied Biology, Department of Experimental, Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy.

Molecular Genetics & Genomic Medicine
|March 15, 2019
PubMed
Summary
This summary is machine-generated.

A new Polymerase Chain Reaction-Restriction Fragment Length Polymorphism (PCR-RFLP) method offers improved detection of the 5,10-Methylentetrahydrofolate reductase (MTHFR) C677T polymorphism. This optimized technique provides clear results with minimal expertise and resources.

Keywords:
MTHFR C677TPCR-RFLPnew primer pairrisk factorsingle nucleotide polymorphism

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Area of Science:

  • Genetics
  • Molecular Biology
  • Biochemistry

Background:

  • The 5,10-Methylentetrahydrofolate reductase (MTHFR) C677T polymorphism is a widely studied genetic variation.
  • Polymerase Chain Reaction-Restriction Fragment Length Polymorphism (PCR-RFLP) is a common, cost-effective method for detecting such genetic variations.
  • Existing PCR-RFLP methods for MTHFR C677T, such as the Frosst et al. (1995) method, have documented technical limitations.

Purpose of the Study:

  • To develop and validate a novel PCR-RFLP method for enhanced detection of the MTHFR C677T polymorphism.
  • To address the technical limitations of previously established PCR-RFLP protocols for MTHFR C677T genotyping.

Main Methods:

  • Systematic literature review using PubMed to identify existing PCR-RFLP methods for MTHFR C677T.
  • Design of a new primer pair using Amplify software and validation of specificity with Primer-BLAST software.
  • Optimization of PCR amplification and restriction digestion with Hinf I enzyme, followed by agarose gel electrophoresis.

Main Results:

  • A comprehensive literature analysis revealed limitations in 108 previously described primer pairs for MTHFR C677T PCR-RFLP.
  • The newly designed primer pair amplifies a 513 bp DNA fragment.
  • Digestion of the amplified fragment by Hinf I enzyme produces distinct 146 bp and 367 bp fragments in the presence of the polymorphism, clearly visualized on a 2% agarose gel.

Conclusions:

  • The developed PCR-RFLP strategy offers an optimized approach for MTHFR C677T polymorphism detection.
  • This novel method overcomes limitations of the Frosst et al. (1995) method and other existing PCR-RFLP strategies.
  • The protocol requires minimal expertise and materials, yielding results within one day.