First pharmacophoric hypothesis for 5-HT 7 antagonism
作者:Marı́a L. López-Rodrı́guez、Esther Porras、Bellinda Benhamú、José.A. Ramos、M.José Morcillo、José L. Lavandera
DOI:10.1016/s0960-894x(00)00166-9
日期:2000.5
In order to make the first contribution to the elucidation of essential structural features for 5-HT7 antagonism, a set of thirty 5-HT7 antagonists were selected from the literature. A pharmacophore model was built using Molecular Modeling studies with Catalyst program, The information contained in this model was validated with new synthesized compounds. (C) 2000 Elsevier Science Ltd. All rights reserved.
Discovery of the Polyamine Conjugate with Benzo[<i>cd</i>]indol-2(1<i>H</i>)-one as a Lysosome-Targeted Antimetastatic Agent
Polyamine derivatives have a promising prospect in dealing with disseminated tumor cells, a major obstacle in cancer therapy. To develop a bifunctional polyamine derivative that can serve as a fluorescent probe and an antimetastatic agent, three kinds of polyamine conjugates with benzo[cd]indol-2(1H)-one as a scaffold were designed and synthesized. Compound Se was selected as a lead by in vitro screening. Two animal models demonstrated that Se inhibited pulmonary metastasis and tumor growth. As a fluorescent probe, Se might partially enter cells via a polyamine transporter and subsequently localize in the lysosome. Mechanistic investigations demonstrated the interdependence of Se-triggered apoptosis and autophagy. Compound Se modulated the expression of LC3-II, p62, cathepsins, and the expression of capases 3, caspase 8, Bcl-2, and p53. The SSAT-mediated Akt/beta-catenin pathways were also inhibited by 5e. The dual features of Se make it a worthwhile lead compound for further structural optimization.