한빛사논문
GaRyoung Lee 1,2†, Sang Mi Lee 1,2†, Sungyoung Lee 3, Chang Wook Jeong 4, Hyojin Song 3, Sang Yup Lee 1,2,5, Hongseok Yun 3*, Youngil Koh 6* and Hyun Uk Kim 1,2,5*
1Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
2Systems Metabolic Engineering and Systems Healthcare Cross-Generation Collaborative Laboratory, KAIST, Daejeon 34141, Republic of Korea
3Department of Genomic Medicine, Seoul National University Hospital, Seoul 03080, Republic of Korea
4Department of Urology, Seoul National University College of Medicine, and Seoul National University Hospital, Seoul 03080, Republic of Korea
5Graduate School of Engineering Biology, BioProcess Engineering Research Center, and BioInformatics Research Center, KAIST, Daejeon 34141, Republic of Korea
6Department of Internal Medicine, Seoul National University Hospital, Seoul 03080, Republic of Korea
†GaRyoung Lee and Sang Mi Lee contributed equally to this work.
*Corresponding authors: correspondence to Hongseok Yun, Youngil Koh or Hyun Uk Kim
Abstract
Background
Oncometabolites, often generated as a result of a gene mutation, show pro-oncogenic function when abnormally accumulated in cancer cells. Identification of such mutation-associated metabolites will facilitate developing treatment strategies for cancers, but is challenging due to the large number of metabolites in a cell and the presence of multiple genes associated with cancer development.
Results
Here we report the development of a computational workflow that predicts metabolite-gene-pathway sets. Metabolite-gene-pathway sets present metabolites and metabolic pathways significantly associated with specific somatic mutations in cancers. The computational workflow uses both cancer patient-specific genome-scale metabolic models (GEMs) and mutation data to generate metabolite-gene-pathway sets. A GEM is a computational model that predicts reaction fluxes at a genome scale and can be constructed in a cell-specific manner by using omics data. The computational workflow is first validated by comparing the resulting metabolite-gene pairs with multi-omics data (i.e., mutation data, RNA-seq data, and metabolome data) from acute myeloid leukemia and renal cell carcinoma samples collected in this study. The computational workflow is further validated by evaluating the metabolite-gene-pathway sets predicted for 18 cancer types, by using RNA-seq data publicly available, in comparison with the reported studies. Therapeutic potential of the resulting metabolite-gene-pathway sets is also discussed.
Conclusions
Validation of the metabolite-gene-pathway set-predicting computational workflow indicates that a decent number of metabolites and metabolic pathways appear to be significantly associated with specific somatic mutations. The computational workflow and the resulting metabolite-gene-pathway sets will help identify novel oncometabolites and also suggest cancer treatment strategies.
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