RT Journal Article T1 Crambescin C1 Exerts a Cytoprotective Effect on HepG2 Cells through Metallothionein Induction A1 Roel Sánchez, María A1 Rubiolo Gaytán, Juan Andrés A1 Ternon, Eva A1 Thomas, Olivier P. A1 Rodríguez Vieytes, Mercedes A1 Botana López, Luis Miguel K1 Crambescin-C1 K1 Crambescin-A1 K1 Metallothionein K1 Crambe crambe K1 Sponge-derived compounds K1 Transcriptome profiling K1 Antioxidant effect K1 Cell cycle inhibition AB The Mediterranean marine sponge Crambe crambe is the source of two families of guanidine alkaloids known as crambescins and crambescidins. Some of the biological effects of crambescidins have been previously reported while crambescins have undergone little study. Taking this into account, we performed comparative transcriptome analysis to examine the effect of crambescin-C1 (CC1) on human tumor hepatocarcinoma cells HepG2 followed by validation experiments to confirm its predicted biological activities. We report herein that, while crambescin-A1 has a minor effect on these cells, CC1 protects them against oxidative injury by means of metallothionein induction even at low concentrations. Additionally, at high doses, CC1 arrests the HepG2 cell cycle in G0/G1 and thus inhibits tumor cell proliferation. The findings presented here provide the first detailed approach regarding the different effects of crambescins on tumor cells and provide a basis for future studies on other possible cellular mechanisms related to these bioactivities PB MDPI YR 2015 FD 2015 LK http://hdl.handle.net/10347/23611 UL http://hdl.handle.net/10347/23611 LA eng NO Roel, M.; Rubiolo, J.A.; Ternon, E.; Thomas, O.P.; Vieytes, M.R.; Botana, L.M. Crambescin C1 Exerts a Cytoprotective Effect on HepG2 Cells through Metallothionein Induction. Mar. Drugs 2015, 13, 4633-4653 NO FEDER cofunded-grants. CDTI and Technological Funds, supported by Ministerio de Economía y Competitividad, AGL2012-40185-CO2-01 and Consellería de Cultura, Educación e Ordenación Universitaria, GRC2013-016, and by Axencia Galega de Innovación, Spain, ITC-20133020 SINTOX, IN852A 2013/16-3 MYTIGAL. CDTIunderISIP Programme, Spain, IDI-20130304 APTAFOOD. European Union’s 7th Framework Programme managed by Research Executive Agency (FP7/2007-2013) under grant agreement Nos. 265409 µAQUA, 315285 CIGUATOOLS and 312184 PHARMASEA DS Minerva RD 1 may 2026