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Induction of cell killing and autophagy by amphiphilic pyrrolidine derivatives on human pancreatic cancer cells

AutorBello, Claudia; Gajate, Consuelo; Faustino Mollinedo; Vogel, Pierre
Palabras claveAmphiphilic
Diol-derived pyrrolidine
Anticancer
Apoptosis
Autophagy
Edelfosine
Pancreatic cancer
Fecha de publicación2-mar-2018
EditorElsevier
CitaciónEuropean Journal of Medicinal Chemistry 150:457e478 (2018)
ResumenWe have synthesized a wide array of structurally related amphiphilic compounds, containing a functionalized pyrrolidine polar group coupled to different ether-linked hydrocarbon chains, to generate novel structures with antitumor activity. These newly synthesized amphiphilic pyrrolidine-derived compounds were classified in three different sub-libraries regarding the number of hydroxyl groups substituting the pyrrolidine moiety at C3 and C4. Pyrrolidine compounds with one or none hydroxyl groups showed a potent cell killing activity against pancreatic cancer cells, but they lacked selectivity for tumor cells. Pyrrolidine compounds with two hydroxyl groups induced cell death in a wide variety of pancreatic cancer cell lines, and they were somewhat less cytotoxic to normal non-tumor cells. Among these latter compounds, the diol-derived pyrrolidine 20 ((2R,3R,4S)-2-{(9Z)-hexadec-9-en-1-yloxy] methyl}pyrrolidine-3,4-diol) induced autophagy and a potent apoptotic response in pancreatic ductal adenocarcinoma cells, which was inhibited by Bcl-XL overexpression and by caspase inhibition, in a way similar to that of the amphiphilic ether lipid edelfosine, with which it was compared. Pharmacological and genetic inhibition of autophagy potentiated 20-mediated apoptosis. These structure-activity relationship studies point out the importance of the diol polar group and aliphatic side chain of 20 in promoting apoptosis against pancreatic cancer cells in a rather controlled way, and some additional subtle modifications were found to be potential modulators of the cytotoxic activity.
Descripción57 p.-9 fig.-2 tab.+Graph. Abst.+Suppl.mat. Bello, Claudia et al.
Versión del editorhttp://doi.org/10.1016/j.ejmech.2018.02.086
URIhttp://hdl.handle.net/10261/162835
DOI10.1016/j.ejmech.2018.02.086.
ISSN0223-5234
E-ISSN1768-3254
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