A new ceramide from Suillus luteus and its cytotoxic activity against human melanoma cells |
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Authors: | León Francisco Brouard Ignacio Torres Fernando Quintana José Rivera Augusto Estévez Francisco Bermejo Jaime |
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Institution: | Instituto de Productos Naturales y Agrobiología, CSIC, Instituto Universitario de Bio-Orgánica Antonio González, Av. Astrofísico F. Sánchez 3, E-38206 La Laguna, Tenerife. |
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Abstract: | A new phytosphingosine-type ceramide, suillumide (1), was isolated from the EtOH extract of the basidiomycete Suillus luteus (L.) S. F. Gray, along with ten known compounds: ergosta-4,6,8(14),22-tetraen-3-one, ergosterol, ergosterol peroxide, suillin, (E)-3,4,5-trimethoxycinnamic alcohol, 5 alpha,6 alpha-epoxyergosta-8,22-diene-3beta,7 beta-diol, (R)-1-palmitoylglycerol, ergosta-7,9(11),22-triene-3beta,5 alpha,6 beta-triol, cerevisterol, and 4-hydroxybenzoic acid. The structure of 1 was determined on the basis of spectroscopic and mass-spectrometric analyses, as well as by chemical methods. Compound 1 and its synthetic diacetyl derivative 2 were tested for their cytotoxic activities against the human melanoma cell line SK-MEL-1. Both drugs showed IC(50) values of ca. 10 microM after 72 h of exposure. |
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Keywords: | Suillus luteus Suillumide Phytosphingosine Cytotoxic activity Melanoma Ceramide |
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