01854nas a2200181   4500008004100000245010700041210006900148260000800217300001200225490000800237520118700245100002301432700002001455700002201475700002601497700002401523856012501547       2017                        eng d00a4-Phenyl quinoline derivatives as potential serotonin receptor ligands with antiproliferative activity0 a4Phenyl quinoline derivatives as potential serotonin receptor li  cAUG  a246-2580 v1363 aAntagonists of signaling receptors are often effective non-toxic therapeutic agents. Over the years, there have been evidences describing the role of serotonin or 5-hydroxytryptamine (5-HT) in development of cancer. Although there are reports on the antiproliferative effects of some serotonin receptor antagonists, there are very few investigations related to understanding their structure-activity relationships. In this study, we report the screening of a library of 4-phenyl quinoline derivatives for their antiproliferative activities. Preliminary docking studies indicated that these ligands had the ability to bind to two of the serotonin. receptors, 5-HT1B and 5-HT2B. The results of the in silico experiments were validated by performing in vitro studies on MCF-7 breast cancer cell line. The ethylpiperazine derivatives showed maximum toxicity against this cancer cell line. The compounds inhibited Calcium ion efflux (induced by serotonin) and ERK activation. One of the most active 4-phenyl quinoline derivatives (H3a) also induced apoptosis, thereby, suggesting the use of this scaffold as a potential anticancer drug. (C) 2017 Elsevier Masson SAS. All rights reserved.1 aJoshi, Pranaya, V.1 aSayed, Alim, A.1 aRaviKumar, Ameeta1 aPuranik, Vedavati, G.1 aZinjarde, Smita, S.  uhttps://library.ncl.res.in/content/4-phenyl-quinoline-derivatives-potential-serotonin-receptor-ligands-antiproliferative