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Modification of oxidative stress on gene expression profiling in the rat infarcted heart

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Abstract

Cardiac oxidative stress is developed following myocardial infarction (MI) particularly in the first week of MI. The influence of reactive oxygen species (ROS) on gene expression profiling and molecular pathways in the infarcted myocardium remains uncertain and is explored in the present study. Rats with MI were treated with or without antioxidants for 1 week. Normal rats served as controls. Cardiac oxidative stress and gene profiling were investigated. Compared to normal hearts, malondialdehyde, a marker of oxidative stress, was significantly increased in the infarcted myocardium, which was significantly suppressed by antioxidants. Microarray assay showed that over a thousand genes were differentially expressed in the infarcted myocardium. Antioxidants significantly altered the expression of 159 genes compared to untreated MI rats. Ingenuity pathway analysis indicated that multiple pathway networks were affected by antioxidants, including those related to cell movement, growth/development, death, and inflammatory/fibrotic responses. IPA further identified that these changes were primarily related to NFκB, p38 MAPK, and ERκ1/2 pathways. Hub genes were identified in the associated gene networks. This study reveals the gene networks associated with cardiac oxidative stress postMI. These observations indicate that ROS regulate various molecular and cellular actions related to cardiac repair/remodeling through multiple gene networks.

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Acknowledgments

This work was supported by NIH Heart, Blood, and Lung Institute (RO1-HL096503, Yao Sun).

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Authors and Affiliations

  1. Division of Cardiovascular Diseases, Department of Medicine, University of Tennessee Health Science Center, 956 Court Ave., Rm B324, Memphis, TN, 38163, USA

    Wenyuan Zhao, Tieqiang Zhao, Yuanjian Chen & Yao Sun

  2. Division of Endocrinology, Department of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA

    Ivan C. Gerling

  3. Department of Preventive Medicine, University of Tennessee Health Science Center, Memphis, TN, USA

    Yanhua Qu

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  1. Wenyuan Zhao
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  2. Tieqiang Zhao
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  3. Yuanjian Chen
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  4. Yanhua Qu
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  5. Ivan C. Gerling
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  6. Yao Sun
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Correspondence to Yao Sun.

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Zhao, W., Zhao, T., Chen, Y. et al. Modification of oxidative stress on gene expression profiling in the rat infarcted heart. Mol Cell Biochem 379, 243–253 (2013). https://doi.org/10.1007/s11010-013-1646-2

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  • DOI: https://doi.org/10.1007/s11010-013-1646-2

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