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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Simultaneous determination of polyamines, N-acetylated polyamines and the polyamine analogues BE-3-3-3 and BE-4-4-4-4 by capillary gas chromatography with nitrogen-phosphorus detection.

We describe a method for the profiling of polyamines, N-acetylated polyamines and the polyamine analogues N1,N11-bis(ethyl)norspermine (BE-3-3-3) and 1,19-bis(ethylamino)-5,10,15-triazanonadecane (BE-4-4-4-4) in L1210 murine leukaemia cells by capillary gas chromatography with nitrogen-phosphorus detection. The method makes use of four intemal standards. Prepurification comprises deproteinization, isolation with Sep-Pak silica at pH 9.0, conversion to heptafluorobutyryl derivatives and postderivatization organic fluid extraction. Within- and between-series precisions (given as CV.s) for analysis of 1-2x10(6) cells were: putrescine 5.5 and 29.4%; spermidine 1.6 and 7.1%; and spermine 3.2 and 7.6%, respectively. Recoveries relative to the respective internal standards, were in the 70.6-104.7% range. Accuracy and precision of measurements of BE-4-4-4-4 can probably be improved by the introduction of a separate pentamine internal standard. We conclude that the method can be used for studying the effect of BE-3-3-3 and BE-4-4-4-4, and possibly their metabolites, on polyamine homeostasis (biosynthesis, retroconversion, transport, terminal catabolism) and polyamine function.[1]

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