Molecular design of histone deacetylase inhibitors by aromatic ring shifting in chlamydocin framework
作者:Gururaj M. Shivashimpi、Satoshi Amagai、Tamaki Kato、Norikazu Nishino、Satoko Maeda、Tomonori G. Nishino、Minoru Yoshida
DOI:10.1016/j.bmc.2007.08.041
日期:2007.12
capping group, corresponding to cyclic tetrapeptide framework in case of chlamydocin is supposed to interact with the surface of HDAC molecule. Various changes in amino acid residues in chlamydocin may afford specific inhibitors toward HDAC paralogs. To find out specific inhibitors, we focused on benzene ring of l-Phe in chlamydocin framework to shift to various parts of cyclic tetrapeptide. We prepared
衣霉素,一种环状四肽,含有氨基异丁酸(Aib),1-苯丙氨酸(1-Phe),d-脯氨酸(d-Pro)和独特的氨基酸1-2-氨基-8-氧代-9,10-环氧癸酸酸抑制组蛋白脱乙酰酶(HDACs),HDAC是一类酶,在调节基因表达中起重要作用。含硫的氨基酸也可以有效抑制,因此在衣原霉素的情况下,与配体环状四肽构架相对应的锌配体(例如与连接到所谓的封端基团的封端基团相连的巯基)应与HDAC分子表面相互作用。衣原霉素中氨基酸残基的各种变化可提供针对HDAC旁系同源物的特异性抑制剂。为了找出特定的抑制剂,我们着重研究了衣藻素框架中1-苯丙氨酸的苯环,以转移至环状四肽的各个部分。我们制备了几种芳香族氨基酸并将其引入到环状四肽中。通过评估这些大环肽对HDAC的抑制活性,我们可以通过将芳香环转移到Aib位点来找到有效的抑制剂。