Open Access

Isobaric tags for relative and absolute quantitation‑based proteomics reveals potential novel biomarkers for the early diagnosis of acute myocardial infarction within 3 h

  • Authors:
    • Changqing Du
    • Yingzheng Weng
    • Jiangjie Lou
    • Guangzhong Zeng
    • Xiaowei Liu
    • Hongfeng Jin
    • Senna Lin
    • Lijiang Tang
  • View Affiliations

  • Published online on: March 19, 2019     https://doi.org/10.3892/ijmm.2019.4137
  • Pages: 1991-2004
  • Copyright: © Du et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Acute myocardial infarction (AMI) is one of the most common and life‑threatening cardiovascular diseases. However, the ability to diagnose AMI within 3 h is currently lacking. The present study aimed to identify the differentially expressed proteins of AMI within 3 h and to investigate novel biomarkers using isobaric tags for relative and absolute quantitation (ITRAQ) technology. A total of 30 beagle dogs were used for establishing the MI models successfully by injecting thrombin powder and a polyethylene microsphere suspension. Serum samples were collected prior to (0 h) and following MI (1, 2 and 3 h). ITRAQ‑coupled liquid chromatography‑mass spectrometry (LC‑MS) technology was used to identify the differentially expressed proteins. The bioinformatics analysis selected several key proteins in the initiation of MI. Further analysis was performed using STRING software. Finally, western blot analysis was used to evaluate the results obtained from ITRAQ. In total, 28 proteins were upregulated and 23 were downregulated in the 1 h/0 h group, 28 proteins were upregulated and 26 were downregulated in the 2 h/0 h group, and 24 proteins were upregulated and 19 were downregulated in the 3 h/0 h group. The Gene Ontology (GO) annotation and functional enrichment analysis identified 19 key proteins. Protein‑protein interactions (PPIs) were investigated using the STRING database. GO enrichment analysis revealed that a number of key proteins, including ATP synthase F1 subunit β (ATP5B), cytochrome c oxidase subunit 2 and cytochrome c, were components of the electron transport chain and were involved in energy metabolism. The western blot analysis demonstrated that the expression of ATP5B decreased significantly at all three time points (P<0.01), which was consistent with the ITRAQ results, whereas the expression of fibrinogen γ chain increased at 2 and 3 h (P<0.01) and the expression of integrator complex subunit 4 increased at all three time points (P<0.01), which differed from the ITRAQ results. According to the proteomics of the beagle dog MI model, ATP5B may serve as the potential biomarkers of AMI. Mitochondrial dysfunction and disruption of the electron transport chain may be critical indicators of early MI within 3 h. These finding may provide a novel direction for the diagnosis of AMI.
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May-2019
Volume 43 Issue 5

Print ISSN: 1107-3756
Online ISSN:1791-244X

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Spandidos Publications style
Du C, Weng Y, Lou J, Zeng G, Liu X, Jin H, Lin S and Tang L: Isobaric tags for relative and absolute quantitation‑based proteomics reveals potential novel biomarkers for the early diagnosis of acute myocardial infarction within 3 h. Int J Mol Med 43: 1991-2004, 2019
APA
Du, C., Weng, Y., Lou, J., Zeng, G., Liu, X., Jin, H. ... Tang, L. (2019). Isobaric tags for relative and absolute quantitation‑based proteomics reveals potential novel biomarkers for the early diagnosis of acute myocardial infarction within 3 h. International Journal of Molecular Medicine, 43, 1991-2004. https://doi.org/10.3892/ijmm.2019.4137
MLA
Du, C., Weng, Y., Lou, J., Zeng, G., Liu, X., Jin, H., Lin, S., Tang, L."Isobaric tags for relative and absolute quantitation‑based proteomics reveals potential novel biomarkers for the early diagnosis of acute myocardial infarction within 3 h". International Journal of Molecular Medicine 43.5 (2019): 1991-2004.
Chicago
Du, C., Weng, Y., Lou, J., Zeng, G., Liu, X., Jin, H., Lin, S., Tang, L."Isobaric tags for relative and absolute quantitation‑based proteomics reveals potential novel biomarkers for the early diagnosis of acute myocardial infarction within 3 h". International Journal of Molecular Medicine 43, no. 5 (2019): 1991-2004. https://doi.org/10.3892/ijmm.2019.4137