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KMID : 1034820120080010035
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Molecular & Cellular Toxicology
2012 Volume.8 No. 1 p.35 ~ p.41
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mRNA-centric semantic modeling for finding molecular signature of trace chemical in human blood
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Shin Ga-Hee
Kang Yeon-Kyung
Lee Seung-Hun
Kim Seung-Jun
Hwang Seung-Yong
Nam Suk-Woo
Ryu Jae-Chun
Kang Byeong-Chul
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Abstract
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The vast quantities of information on toxicogenomics such as genome sequence, genotype, gene expression, phenotype, disease information, etc. are reflected in scientific literature. However, these various and heterogeneous data has to be reconstructed by proper data model to enhance our understanding. This study suggests a semantic modeling to organize heterogeneous data types and introduces techniques and concepts such as ontologies, semantic objects, typed relationships, contexts, graphs, and information layers. These concepts were used to represent complex biochemical networks relationship. The semantic modeling tool is used as an example to demonstrate how a domain such as risk assessment is represented and how this representation is utilized for research. In this work, we show focusing on mRNA centric semantic model as a representative. From experimental data, text-mining results and public databases we generate mRNA-centric semantic modeling and demonstrate its use by mining specific molecular networks together. Application of semantic modeling: 1. Common DEGs which are differentially expressed mRNA by VOCs are identified. 2. Diseases and biological processes associated with common DEGs are identified. 3. Finally subjects associated with common disease, biological process and DEGs are identified.
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KEYWORD
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Data-mining, Semantic modeling, Gene expression, Microarray
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