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J Immunol Methods. 2002 Jan 1;259(1-2):55-64.

Cytokine mRNA quantification by real-time PCR.

Author information

  • 1Département d'Immunologie-Hématologie-Transfusion, Hôpital Erasme, Brussels, Belgium.

Erratum in

  • J Immunol Methods 2002 Apr 1;262(1-2):229.


Real-time PCR represents a new methodology that accurately quantifies nucleic acids. This has been made possible by the use of fluorogenic probes, which are presented in two forms, namely hydrolysis probes (also called TaqMan probes) and hybridisation probes. We decided to apply this methodology to cytokine mRNA quantification and this led us to the development of a protocol that provides an easy way to develop and perform rapidly real-time PCR on a Lightcycler instrument. It was made possible by the use of freely available software that permits a choice of both the hydrolysis probe and the primers. We firstly demonstrated that the reproducibility of the method using hydrolysis probes compares favourably with that obtained with hybridisation probes. We then applied this technique to determine the kinetics of IL-1ra, IL-1beta, IL-5, IL-13, TNF-alpha and IFN-gamma induction upon stimulation of human peripheral blood mononuclear cells (PBMC) by phytohaemagglutinin (PHA). Finally, the method was also used successfully to demonstrate that IFN-alpha induces IL-10 mRNA accumulation in human monocytes.

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