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Using Whole Mount in situ Hybridization to Link Molecular and Organismal Biology
Published on: March 31, 2011
Synthesis and biological evaluation of morpholines linked coumarin-triazole hybrids as anticancer agents
Nerella Sridhar Goud1, Venkatesh Pooladanda2, Ghouse S Mahammad1
1Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India.
Abstract:
A series of novel morpholines linked coumarin-triazole hybrids (6a-6v) has been synthesized and evaluated for their anti-proliferative potential on a panel of five human cancer cell lines, namely bone (MG-63), lung (A549), breast (MDA-MB-231), colon (HCT-15) and liver (HepG2), using MTT assay. Among all, the compound 6n {7-((1-(2,4-dichlorobenzyl)-1H-1,2,3-triazol-4-yl) methoxy)-4-((2,6-dimethylmorpholino) methyl)-2H-chromen-2-one} showed significant growth inhibition against MG-63 cells with an IC50 value of 0.80 ± 0.22 μM. Further, induction of apoptosis by 6n of MG-63 cells confirmed as a result of morphological changes, the sub-G1 phase arrest, increased percentage of apoptotic cells, and decrease in mitochondrial membrane potential and increase in reactive oxygen species levels. The in vitro Gal-1 expression in cell culture supernatant of MG-63 cells treated with compound 6n showed dose-dependent reduction. The binding constant (Ka ) of 6n with Gal-1 was calculated from the intercept value which was observed as 3.0 × 105 M-1 by fluorescence spectroscopy. Surface plasmon resonance showed that 6n binds to Gal-1 with binding constant (Ka ) of 1.29E+04 1/Ms and equilibrium constant KD value of 7.54E-07 M, respectively. Molecular docking studies revealed the binding interactions of 6n with Gal-1.
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