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      CoMFA, CoMSIA, HQSAR and Molecular Docking Analysis of Ionone-based Chalcone Derivatives as Antiprostate Cancer Activity

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          Abstract

          Androgen receptor has been proved to be effective site for treatment of prostate cancer. Molecular modeling methods performed on forty-three ionone based chalcones derivatives as anti-prostate cancer activity. The designed comparative molecular field analysis, comparative similarity indices analysis and hologram quantitative structure activity relationship models produced statistically significant results with the cross-validated correlation coefficients (q 2) of 0.527, 0.550 and 0.670, non-cross-validated correlation coefficients (r 2) 0.636, 0.671 and 0.746 and predicted r 2 (Pred r 2) of 0.621, 0.563 and 0.732, respectively. Furthermore, bioactive conformation was explored and explained by docking of the potent compound 25 into the binding site of androgen receptor. Present study deals with comparative molecular field analysis, comparative similarity indices analysis and hologram quantitative structure activity relationship and molecular docking studies of the ionone-based chalcones and their derivatives, obtained from literature. The model obtained could be effectively used as a channeling tool for further structure modification and designing of some novel potent anti-prostate cancer compounds.

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          Comparative molecular field analysis (CoMFA). 1. Effect of shape on binding of steroids to carrier proteins.

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            Molecular similarity indices in a comparative analysis (CoMSIA) of drug molecules to correlate and predict their biological activity.

            An alternative approach is reported to compute property fields based on similarity indices of drug molecules that have been brought into a common alignment. The fields of different physicochemical properties use a Gaussian-type distance dependence, and no singularities occur at the atomic positions. Accordingly, no arbitrary definitions of cutoff limits and deficiencies due to different slopes of the fields are encountered. The fields are evaluated by a PLS analysis similar to the CoMFA formalism. Two data sets of steroids binding to the corticosteroid-binding-globulin and thermolysin inhibitors were analyzed in terms of the conventional CoMFA method (Lennard-Jones and Coulomb potential fields) and the new comparative molecular similarity indices analysis (CoMSIA). Models of comparative statistical significance were obtained. Field contribution maps were produced for the different models. Due to cutoff settings in the CoMFA fields and the steepness of the potentials close to the molecular surface, the CoMFA maps are often rather fragmentary and not contiguously connected. This makes their interpretation difficult. The maps obtained by the new CoMSIA approach are superior and easier to interpret. Whereas the CoMFA maps denote regions apart from the molecules where interactions with a putative environment are to be expected, the CoMSIA maps highlight those regions within the area occupied by the ligand skeletons that require a particular physicochemical property important for activity. This is a more significant guide to trace the features that really matter especially with respect to the design of novel compounds.
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              Regulation of androgen action.

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                Author and article information

                Journal
                Indian J Pharm Sci
                Indian J Pharm Sci
                IJPhS
                Indian Journal of Pharmaceutical Sciences
                Medknow Publications & Media Pvt Ltd (India )
                0250-474X
                1998-3743
                Jan-Feb 2016
                : 78
                : 1
                : 54-64
                Affiliations
                [1]School of Pharmacy, Devi Ahilya Vishwavidyalaya, Takshashila Campus, Indore-452 001, India
                [1 ]School of Life Sciences, Devi Ahilya Vishwavidyalaya, Takshashila Campus, Indore-452 001, India
                Author notes
                Address for correspondence: E-mail: rbsm73@ 123456yahoo.co.in
                Article
                IJPhS-78-54
                10.4103/0250-474X.180251
                4852576
                27168682
                38f1bd91-b4f6-443f-a91c-f2c539887986
                Copyright: © Indian Journal of Pharmaceutical Sciences

                This is an open access article distributed under the terms of the Creative Commons Attribution NonCommercial ShareAlike 3.0 License, which allows others to remix, tweak, and build upon the work non commercially, as long as the author is credited and the new creations are licensed under the identical terms.

                History
                : 24 December 2014
                : 23 November 2015
                : 15 February 2016
                Categories
                Research Paper

                Pharmacology & Pharmaceutical medicine
                prostate cancer,comfa,comsia,hqsar,molcad docking
                Pharmacology & Pharmaceutical medicine
                prostate cancer, comfa, comsia, hqsar, molcad docking

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