Novel Bioactive Hybrid Compound Dual Targeting Estrogen Receptor and Histone Deacetylase for the Treatment of Breast Cancer
摘要:
A strategy to develop chemotherapeutic agents by combining several active groups into a single molecule as a conjugate that can modulate multiple cellular pathways may produce compounds having higher efficacy compared to that of single-target drugs. In this article, we describe the synthesis and evaluation of an array of dual-acting ER and histone deacetylase inhibitors. These novel hybrid compounds combine an indirect antagonism structure motif of ER (OBHS, oxabicycloheptene sulfonate) with the HDAC inhibitor suberoylanilide hydroxamic acid (SAHA). These OBHS-HDACi conjugates exhibited good ER binding affinity and excellent ERa antagonistic activity, and they also exhibited potent inhibitory activities against HDACs. Compared with the approved drug tamoxifen, these conjugates exhibited higher antitumor potency in ER alpha-positive breast cancer cells (MCF-7). Moreover, these conjugates not only showed selective anticancer activity that was more potent against MCF-7 cells than DU 145 (prostate cancer), but they had no toxicity toward normal cells.
Design, synthesis and biological evaluation of novel dual-acting modulators targeting both estrogen receptor α (ERα) and lysine-specific demethylase 1 (LSD1) for treatment of breast cancer
dual-targeting drugs has become a new strategy. In this study, we have developed a series of dual-acting agents targeting both estrogen receptor α (ERα) and histone demethylase based on a privileged OBHS pharmacophore scaffold developed previously by our laboratory. These novel OBHS-LSD1i conjugates showed excellent ERα binding affinity and selectivity, and exhibited potent inhibitory activity against lysine
of them showed better antiproliferative efficacy in MCF-7 cell lines with IC50 up to 3.7 μM. In vivo experiments in a MCF-7 breastcancer model in Balb/c nude mice indicated that compound 26a was more potent than tamoxifen. Exploration of the compliancy of the structure against ER specificity utilizing these types of isomeric three-dimensional ligands indicated that one enantiomer had much better biological
Development of Selective Estrogen Receptor Modulator (SERM)-Like Activity Through an Indirect Mechanism of Estrogen Receptor Antagonism: Defining the Binding Mode of 7-Oxabicyclo[2.2.1]hept-5-ene Scaffold Core Ligands
作者:Yangfan Zheng、Manghong Zhu、Sathish Srinivasan、Jerome C. Nwachukwu、Valerie Cavett、Jian Min、Kathryn E. Carlson、Pengcheng Wang、Chune Dong、John A. Katzenellenbogen、Kendall W. Nettles、Hai-Bing Zhou
DOI:10.1002/cmdc.201200048
日期:2012.6
we discovered estrogenreceptor (ER) ligands with a novel three‐dimensional oxabicyclo[2.2.1]heptene corescaffold and good ER binding affinity act as partial agonists via small alkyl ester substitutions on the bicyclic core that indirectlymodulate the critical switch helix in the ER ligandbinding domain, helix 12, by interactions with helix 11. This contrasts with the mechanism of action of tamoxifen
Identification and Structure–Activity Relationships of a Novel Series of Estrogen Receptor Ligands Based on 7-Thiabicyclo[2.2.1]hept-2-ene-7-oxide
作者:Pengcheng Wang、Jian Min、Jerome C. Nwachukwu、Valerie Cavett、Kathryn E. Carlson、Pu Guo、Manghong Zhu、Yangfan Zheng、Chune Dong、John A. Katzenellenbogen、Kendall W. Nettles、Hai-Bing Zhou
DOI:10.1021/jm201556r
日期:2012.3.8
and activities, we have explored compounds in which the central hydrophobic core has a more three-dimensional topology than typically found in estrogen ligands and thus exploits the unfilled space in the ligand-binding pocket. Here, we build upon our previous investigations of 7-oxabicyclo[2.2.1]heptene core ligands, by replacing the oxygen bridge with a sulfoxide. These new 7-thiabicyclo[2.2.1]hept-2-ene-7-oxides