ABSTRACT
The present study describes combined transcriptome and metabolome analysis for therapeutic target validation in hypoxia-induced vascular remodeling. Exposure to hypoxic conditions resulted in the upregulation of S100C mRNA and increased taurine (2-aminoethanesulfonic acid) content in the rat lung, as demonstrated by differential display and amino-acid content analysis. Hypoxia resulted in transcriptional activation of the S100C promoter through hypoxia-inducible factor-1 (HIF-1). Taurine suppressed HIF-1-mediated increases in S100C transcription. Moreover, oral taurine administration attenuated vascular remodeling in hypoxic rat lung, whereas depletion of endogenous taurine by administration of beta-alanine resulted in increased vascular remodeling. Inhibition of HIF transcription by taurine may be of therapeutic benefit in preventing hypoxia-induced vascular remodeling. In conclusion, we used transcriptome and metabolome analysis to identify a therapeutic low-molecular-weight ligand that plays a critical role in hypoxia-induced vascular remodeling. These techniques provided an excellent strategy for screening and validation of targets.
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Acknowledgements
This work was supported in part by Grants-in-Aid for Scientific Research on Priority Areas(C) from Ministry of Education, Culture, Sports, Science and Technology, and Scientific Research (A)–(C), and Exploratory Research from Japan Society for the Promotion of Science, and a Grant for Child Health and Development from the Ministry of Health, Labour and Welfare, Japan. It was also supported by the program for the promotion of Fundamental Studies in Health Sciences of the Organization for Pharmaceutical Safety and Research.
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Amano, H., Maruyama, K., Naka, M. et al. Target validation in hypoxia-induced vascular remodeling using transcriptome/metabolome analysis. Pharmacogenomics J 3, 183–188 (2003). https://doi.org/10.1038/sj.tpj.6500177
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DOI: https://doi.org/10.1038/sj.tpj.6500177
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