Abstract
Cervical cancer is the second largest form of cancer to infest the leading cause of death in women worldwide. There are many causes of cancer but viruses are the most common among them. Human papillomaviruses (HPVs) are found to be the causative organism in almost 99.7% of the cases. HPV16 is the most frequent HPV type in malignant neoplastic growth in about 60% of cervical carcinoma cases. There is limited success achieved in surgical removal or by immune modulation and more effective therapies are under investigation. Observing the mortality rate we theorize a need for alternative treatment approaches and propose a blueprint of compounds with desirable properties that may lead to the development of drugs to treat HPV-associated neoplasias.
E6 oncoprotein of HPV16 has a potential zinc finger domain critical for binding to E6AP, causing p53 degradation and malignancy. Some azoics and disulfides were selected depending on their affinity towards E6 zinc finger and thereby preventing E6-E6AP complex formation. Combinatorial nontoxic derivatives of these azoics and disulfides were docked and validated against the oncoprotein to inhibit E6-E6AP interaction.
Among these, two compounds (E)-N-(2-amino-2-oxoethyl)-N-(4-chlorophenyl) diazene-1,2-dicarboxamide and (E)-N-(2- amino-2-methylpropyl)-N-(thiophen-2-yl)diazene-1,2-dicarboxamide showed binding affinity of -23.70, -19.53 and -5.49, -4.65 Kcal/mol respectively in FlexX and Autodock4.2. These compounds are found more effective than those of the approved E6-E6AP binding inhibitors. Pharmacophores of these compounds were generated to confirm it with pharm mapping mechanism.
The study may confer the way of design of new mechanism and new compounds to treat cervical cancer.
Keywords: Azoics, cervical cancer, disulphides, docking, E6 oncoprotein, Human Papilloma Virus (HPVs), pharmacophore modeling.
Combinatorial Chemistry & High Throughput Screening
Title:An In Silico Appraisal of Azoic and Disulphide Derivatives for Anticancer Activity Against HPV E6 Oncoprotein to Medicate Cervical Cancer
Volume: 17 Issue: 1
Author(s): Arpita Das Choudhury, Manabendra Dutta Choudhury, Pankaj Chetia, Abhishek Chowdhury and Anupam Das Talukdar
Affiliation:
Keywords: Azoics, cervical cancer, disulphides, docking, E6 oncoprotein, Human Papilloma Virus (HPVs), pharmacophore modeling.
Abstract: Cervical cancer is the second largest form of cancer to infest the leading cause of death in women worldwide. There are many causes of cancer but viruses are the most common among them. Human papillomaviruses (HPVs) are found to be the causative organism in almost 99.7% of the cases. HPV16 is the most frequent HPV type in malignant neoplastic growth in about 60% of cervical carcinoma cases. There is limited success achieved in surgical removal or by immune modulation and more effective therapies are under investigation. Observing the mortality rate we theorize a need for alternative treatment approaches and propose a blueprint of compounds with desirable properties that may lead to the development of drugs to treat HPV-associated neoplasias.
E6 oncoprotein of HPV16 has a potential zinc finger domain critical for binding to E6AP, causing p53 degradation and malignancy. Some azoics and disulfides were selected depending on their affinity towards E6 zinc finger and thereby preventing E6-E6AP complex formation. Combinatorial nontoxic derivatives of these azoics and disulfides were docked and validated against the oncoprotein to inhibit E6-E6AP interaction.
Among these, two compounds (E)-N-(2-amino-2-oxoethyl)-N-(4-chlorophenyl) diazene-1,2-dicarboxamide and (E)-N-(2- amino-2-methylpropyl)-N-(thiophen-2-yl)diazene-1,2-dicarboxamide showed binding affinity of -23.70, -19.53 and -5.49, -4.65 Kcal/mol respectively in FlexX and Autodock4.2. These compounds are found more effective than those of the approved E6-E6AP binding inhibitors. Pharmacophores of these compounds were generated to confirm it with pharm mapping mechanism.
The study may confer the way of design of new mechanism and new compounds to treat cervical cancer.
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Cite this article as:
Choudhury Das Arpita, Choudhury Dutta Manabendra, Chetia Pankaj, Chowdhury Abhishek and Talukdar Das Anupam, An In Silico Appraisal of Azoic and Disulphide Derivatives for Anticancer Activity Against HPV E6 Oncoprotein to Medicate Cervical Cancer, Combinatorial Chemistry & High Throughput Screening 2014; 17 (1) . https://dx.doi.org/10.2174/13862073113166660066
DOI https://dx.doi.org/10.2174/13862073113166660066 |
Print ISSN 1386-2073 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5402 |
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