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[A detection method for recombinant DNA from genetically modified maize CBH351].

T Matsuoka1, H Kuribara, S Suefuji

  • 1National Food Research Institute, MAFF: 2-1-2, Kannondai, Tsukuba, Ibaraki 305-8642, Japan.

Shokuhin Eiseigaku Zasshi. Journal of the Food Hygienic Society of Japan
|October 2, 2001
PubMed
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A new polymerase chain reaction (PCR) method detects genetically modified maize CBH351. This highly sensitive technique ensures accurate identification, preventing false positives in food and feed safety assessments.

Area of Science:

  • Molecular Biology
  • Genetics
  • Biotechnology

Context:

  • Genetically modified (GM) maize CBH351 is not yet approved for food and feed use in Japan.
  • Accurate detection methods are crucial for regulatory compliance and food safety.
  • Existing detection methods may lack specificity or sensitivity for certain GM events.

Purpose:

  • To develop and validate a specific and sensitive polymerase chain reaction (PCR) method for detecting genetically modified maize CBH351.
  • To design primer pairs targeting the introduced recombinant DNA (r-DNA) sequence in CBH351.
  • To establish the detection limit and specificity of the developed PCR assay.

Summary:

  • A novel PCR-based method was established for the specific detection of genetically modified maize CBH351.

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  • The method utilizes primer pairs designed to amplify a segment of the introduced r-DNA sequence.
  • The assay demonstrated high specificity, distinguishing CBH351 from other maize varieties and cereal crops.
  • The detection limit was found to be as low as 0.05-0.1% CBH351 maize in samples, equivalent to several genome copies.

    • Impact:

    • Provides a reliable tool for regulatory agencies and food producers to monitor and control the presence of unauthorized GM maize CBH351.
    • Enhances food and feed safety in Japan by enabling accurate detection of unapproved GM events.
    • Contributes to the field of molecular diagnostics for genetically modified organisms (GMOs).