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Biotechniques. 1989 Nov-Dec;7(10):1096-103.

Message amplification phenotyping (MAPPing): a technique to simultaneously measure multiple mRNAs from small numbers of cells.

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Genelabs Inc., Redwood City, CA 94063.


A rapid and highly sensitive technique (MAPPing: message amplification phenotyping) has been developed to simultaneously analyze the array of messenger RNAs made by small numbers of cells. The technique incorporates a micro-procedure for isolating RNA, reverse transcription of total cellular RNA to produce cDNA, and enzymatic amplification of cytokine-specific DNA fragments using the polymerase chain reaction. In this study, the technique has been applied to the analysis of cytokines produced by lymphoid cells ranging in number from a single cell to 10(6) cells. The technique should be applicable to virtually any tissue or cell type.

[Indexed for MEDLINE]

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