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Related Concept Videos

Real Time RT-PCR02:57

Real Time RT-PCR

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Real-time reverse transcription-polymerase chain reaction, or Real-time RT-PCR, is an analytical tool used to determine the expression level of target genes. The method involves converting mRNA to complementary DNA with the help of an enzyme known as reverse transcriptase, followed by the PCR amplification of the cDNA. These two processes can be performed simultaneously in a single tube or separately as a two-step reaction.
The real-time quantification of the number of amplified products is...
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Open-Source Miniature Fluorimeter to Monitor Real-Time Isothermal Nucleic Acid Amplification Reactions in Resource-Limited Settings
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Low-Cost, Real-Time Polymerase Chain Reaction System with Integrated RNA Extraction.

Tchamie Kadja1, Yvonne Sun2, Vamsy P Chodavarapu1

  • 1Department of Electrical and Computer Engineering, University of Dayton, 300 College Park, Dayton, OH 45469, USA.

Sensors (Basel, Switzerland)
|July 11, 2023
PubMed
Summary
This summary is machine-generated.

A new heat-mediated enzymatic assay simplifies RNA extraction for rapid biological sample testing. This method is a viable, cost-effective alternative to commercial kits, especially for point-of-care diagnostics.

Keywords:
COVID-19RNA extractionfluorescence sensingfood and water qualitypoint-of-care diagnosticspolymerase chain reaction (PCR)real-time PCR

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Area of Science:

  • Molecular Biology
  • Virology
  • Biotechnology

Background:

  • Sensitive biological sample testing, crucial for point-of-care diagnostics, typically requires genetic material extraction.
  • Current commercial extraction kits are costly, time-consuming, and labor-intensive.
  • The COVID-19 pandemic highlighted the need for rapid, accessible diagnostic methods.

Purpose of the Study:

  • To develop a simple, low-cost enzymatic assay for nucleic acid extraction using heat mediation.
  • To improve the sensitivity of polymerase chain reaction (PCR) reactions.
  • To evaluate the viability of this method as an alternative to commercial extraction kits.

Main Methods:

  • An enzymatic assay with heat mediation was developed for nucleic acid extraction.
  • The assay was tested using Human Coronavirus 229E (HCoV-229E) as a model.
  • A custom-made, low-cost real-time PCR system with thermal cycling and fluorescence detection was utilized.

Main Results:

  • Heat-mediated RNA extraction proved to be a viable method compared to commercial kits.
  • Extraction impacted purified HCoV-229E samples but not infected human cells.
  • The method is suitable for versatile biological sample testing, including point-of-care applications.

Conclusions:

  • Heat-mediated enzymatic RNA extraction offers a cost-effective and efficient alternative to traditional methods.
  • The ability to bypass the extraction step for clinical samples is clinically relevant for PCR-based diagnostics.
  • This simplified approach supports rapid testing in various health and environmental settings.