Modification of cap group in delta-lactam-based histone deacetylase (HDAC) inhibitors |
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Authors: | Kim Hwan Mook Hong Sung Hee Kim Myung Sook Lee Chang Woo Kang Jong Soon Lee Kiho Park Song-Kyu Han Jeung Whan Lee Hee Yoon Choi Yongseok Kwon Ho Jeung Han Gyoonhee |
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Institution: | Korea Research Institute of Bioscience and Biotechnology, Yuseong, Daejeon 305-333, Republic of Korea. |
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Abstract: | Novel delta-lactam-based HDAC inhibitors which have various substituted benzyl, bi-aromatic cap groups were prepared using ring closure metathesis reaction, and evaluated their HDAC inhibitory activities and anti-proliferative effects. Among prepared analogues, 11m and 11o have very strong HDAC enzymatic inhibition and showed the most potent growth inhibitory activity to five human tumor cell lines including PC-3, ACHN, NUGC-3, HCT-15, and MBA-MB-231 tumor cell lines. Compounds 11m and 11o also showed good tumor growth inhibition of MDA-MB-231 cells in in vivo xenograft model. Structure-activity relationship study using docking model explained the significance of hydrophobic aromatic cap groups for their in vitro activities. |
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