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New fluorogenic probes for neutral and alkaline ceramidases

AuthorsCasasampere, Mireia; Bielsa, Núria; Riba, Daniel; Bassas, Laura; Ruijuan, Xu; Cungui, Mao; Fabriàs, Gemma; Abad, José Luis; Delgado, Antonio; Casas, Josefina
Chemical synthesis
Issue Date29-Mar-2019
PublisherAmerican Society for Biochemistry and Molecular Biology
CitationJournal of Lipid Research (2019)
AbstractNew fluorogenic ceramidase substrates derived from the N acyl modification of our previously reported probes (RBM14) are reported. While none of the new probes were superior to the known RBM14C12 as acid ceramidase substrates, the corresponding nervonic acid amide (RBM14C24:1) is an efficient and selective substrate for the recombinant human neutral ceramidase, both in cell lysates and in intact cells. A second generation of substrates, incorporating the natural 2 (N acylamino) 1,3 diol 4 ene framework (compounds RBM15) is also reported. Among them, the corresponding fatty acyl amides with an unsaturated N acyl chain can be used as substrates to determine ACER1 and ACER2 activities. In particular, compound RBM15C18:1 has emerged as the best fluorogenic probe reported so far to measure ACER1 and ACER2 activities in a 96 well plate format.
Publisher version (URL)10.1194/jlr.D092759
Appears in Collections:(IQAC) Artículos
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