Structure–activity studies at position 27 of aplog-1, a simplified analog of debromoaplysiatoxin with anti-proliferative activity
摘要:
Aplog-1, a simplified analog of debromoaplysiatoxin with anti-proliferative activity, bound to and activated protein kinase delta (PKC delta), that is involved in tumor suppression and apoptosis. To examine the contribution of PKC delta to the anti-proliferative activity of aplog-1, we synthesized 27-methyl and 27-methoxy derivatives that differed in the ability to activate PKC delta. Activators of PKC delta like aplog-1 and 27-(R)-Me-aplog-1 strongly inhibited the growth of several cancer cell lines. On the other hand, 27-(S)-Me-aplog-1 and 27-O-Me-aplog-1 without the ability to activate PKC delta, exhibited only weak growth inhibitory activity against these cell lines. These results suggest indirectly that the activation of PKC delta might be involved in the anti-proliferative activity of aplog-1 against aplog-sensitive cancer cell lines. (C) 2013 Elsevier Ltd. All rights reserved.