Anticancer activity of novel hybrid molecules containing 5-benzylidene thiazolidine-2,4-dione

Hybridization of two different bioactive molecules with different mechanism of action is one of the methods that are being adopted to treat cancer. Molecules bearing a thiazolidine-2,4-dione scaffold have been recognized as antineoplastic agents with a broad spectrum of activity against many cancer cell lines. In this manuscript we have described the synthesis and biological evaluation of two series of N-3-substituted-5-arylidene thiazolidine-2,4-diones, bearing the α-bromoacryloylamido moiety at the para- or meta-position on the phenyl of the arylidene portion. We have observed that selected compounds 5a, 5c and 5g suppress proliferation of human myeloid leukaemia HL-60 and U937 cells by triggering morphological changes and internucleosomal DNA fragmentation, which are well-known features of apoptosis. Finally, our results indicated that the investigated compounds induced apoptotic cell death through a mechanism that involved activation of multiple caspases and was also associated with the release of cytochrome c from the mitochondria.This work was partially supported by the Ministry of Science and Innovation of Spain and the European Regional Development Fund (SAF2010-21380) and Instituto Canario de Investigación del Cáncer to F.E. Jan Balzarini is funded by GOA (Krediet no. 10/14) of the KU Leuven.Peer Reviewe