Developing centrifugal force real-time digital PCR for detecting extremely low DNA concentration

Sci Rep. 2024 May 21;14(1):11522. doi: 10.1038/s41598-024-62199-5.

Abstract

Digital PCR (dPCR) is a technique for absolute quantification of nucleic acid molecules. To develop a dPCR technique that enables more accurate nucleic acid detection and quantification, we established a novel dPCR apparatus known as centrifugal force real-time dPCR (crdPCR). This system is efficient than other systems with only 2.14% liquid loss by dispensing samples using centrifugal force. Moreover, we applied a technique for analyzing the real-time graph of the each micro-wells and distinguishing true/false positives using artificial intelligence to mitigate the rain, a persistent issue with dPCR. The limits of detection and quantification were 1.38 and 4.19 copies/μL, respectively, showing a two-fold higher sensitivity than that of other comparable devices. With the integration of this new technology, crdPCR will significantly contribute to research on next-generation PCR targeting absolute micro-analysis.

MeSH terms

  • Centrifugation / methods
  • DNA* / analysis
  • DNA* / genetics
  • Limit of Detection
  • Real-Time Polymerase Chain Reaction* / methods