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Label-free quantitative proteomics analysis reveals distinct molecular characteristics in endocardial endothelium

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Abstract

Endocardial endothelium, which lines the chambers of the heart, is distinct in its origin, structure, and function. Characterization studies using genomics and proteomics have reported molecular signatures supporting the structural and functional heterogeneity of various endothelial cells. However, though functionally very important, no studies at protein level have been conducted so far characterizing endocardial endothelium. In this study, we used endothelial cells from pig heart to investigate if endocardial endothelial cells are distinct at the proteome level. Using a high-throughput liquid chromatography-tandem mass spectrometry for proteome profiling and expression, we identified sets of proteins that belong to specific biological processes and metabolic pathways in endocardial endothelial cells supporting its specific structural and functional roles. The study also identified several transcription factors and cell surface markers, which may have roles in the specificity of endocardial endothelium. The detection of sets proteins preferentially expressed in endocardial endothelium offers new insights into its role in the regulation of cardiac function. Data are made available through ProteomeXchange with identifier PXD009194.

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Acknowledgements

This work was supported by the intramural funding of Rajiv Gandhi Centre for Biotechnology, which in turn is funded by Department of Biotechnology, Ministry of Science and Technology, Government of India.

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Authors and Affiliations

  1. Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Poojappura, Thiruvananthapuram, Kerala, 695014, India

    Abdul Jaleel, A. Aneesh Kumar, G. S. Ajith Kumar & Chandrashekaran C. Kartha

  2. Mass Spectrometry and Proteomics Core Facility, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala, India

    Abdul Jaleel & Arun Surendran

  3. Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India

    A. Aneesh Kumar

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  1. Abdul Jaleel
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  2. A. Aneesh Kumar
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  5. Chandrashekaran C. Kartha
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Correspondence to Abdul Jaleel.

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The authors declare that they have no financial or commercial conflicts interests.

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All applicable international, national, and/or institutional guidelines for the care and use of animals were followed. All procedures performed in studies involving animals were in accordance with the ethical standards of the institution or practice at which the studies were conducted.

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Jaleel, A., Aneesh Kumar, A., Ajith Kumar, G.S. et al. Label-free quantitative proteomics analysis reveals distinct molecular characteristics in endocardial endothelium. Mol Cell Biochem 451, 1–10 (2019). https://doi.org/10.1007/s11010-018-3387-8

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  • DOI: https://doi.org/10.1007/s11010-018-3387-8

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