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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Comput+Aided+Mol+Des
2014 ; 28
(6
): 631-46
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Design, synthesis and experimental validation of novel potential chemopreventive
agents using random forest and support vector machine binary classifiers
#MMPMID24840854
Sprague B
; Shi Q
; Kim MT
; Zhang L
; Sedykh A
; Ichiishi E
; Tokuda H
; Lee KH
; Zhu H
J Comput Aided Mol Des
2014[Jun]; 28
(6
): 631-46
PMID24840854
show ga
Compared to the current knowledge on cancer chemotherapeutic agents, only limited
information is available on the ability of organic compounds, such as drugs
and/or natural products, to prevent or delay the onset of cancer. In order to
evaluate chemical chemopreventive potentials and design novel chemopreventive
agents with low to no toxicity, we developed predictive computational models for
chemopreventive agents in this study. First, we curated a database containing
over 400 organic compounds with known chemoprevention activities. Based on this
database, various random forest and support vector machine binary classifiers
were developed. All of the resulting models were validated by cross validation
procedures. Then, the validated models were applied to virtually screen a
chemical library containing around 23,000 natural products and derivatives. We
selected a list of 148 novel chemopreventive compounds based on the consensus
prediction of all validated models. We further analyzed the predicted active
compounds by their ease of organic synthesis. Finally, 18 compounds were
synthesized and experimentally validated for their chemopreventive activity. The
experimental validation results paralleled the cross validation results,
demonstrating the utility of the developed models. The predictive models
developed in this study can be applied to virtually screen other chemical
libraries to identify novel lead compounds for the chemoprevention of cancers.