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Related Experiment Videos

Poly A-linked colorimetric microtiter plate assay for HIV reverse transcriptase

K Suzuki1, B P Craddock, N Okamoto

  • 1Biomedical Research Center, Olympus Corporation, East Setauket, NY.

Journal of Virological Methods
|October 1, 1993
PubMed
Summary

A new colorimetric assay accurately detects human immunodeficiency virus (HIV) reverse transcriptase (RT) in just 40 minutes. This rapid method shows excellent correlation with standard isotopic assays for HIV detection.

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Area of Science:

  • Biochemistry
  • Virology
  • Assay Development

Background:

  • Reverse transcriptase (RT) is a key enzyme in retroviruses like human immunodeficiency virus (HIV).
  • Accurate and rapid detection of HIV RT is crucial for diagnosis and research.
  • Existing isotopic assays can be time-consuming and require specialized handling.

Purpose of the Study:

  • To develop and validate a novel colorimetric assay for the detection of HIV reverse transcriptase.
  • To compare the performance of the new assay with established isotopic methods.

Main Methods:

  • A colorimetric assay was developed utilizing poly A linked to microtiter plates.
  • Biotin-deoxyuridine triphosphate (biotin-dUTP) was incorporated during the RT reaction.
  • Detection involved horseradish peroxidase-conjugated streptavidin and a colorimetric substrate.

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Main Results:

  • The colorimetric assay demonstrated excellent correlation with two standard isotopic RT assays.
  • The assay accurately detected and quantified both avian myoblastosis virus reverse transcriptase (AMV-RT) and HIV RT.
  • The complete assay, including the RT reaction, was completed in 40 minutes.

Conclusions:

  • The developed colorimetric assay provides a rapid and accurate alternative for HIV RT detection.
  • This assay is suitable for both detection and quantification of HIV RT in infected cells.
  • The 40-minute turnaround time offers a significant advantage over traditional methods.