Preliminary quantitative proteomics analysis in chronic and latent Keshan disease by iTRAQ labeling approach
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Yuxiao Sun1,2, Chuanyu Gao1,2, Xianqing Wang1,2 and Yuhao Liu1,2
1Department of Cardiology, Zhengzhou University, People’s Hospital, Zhengzhou, Henan 450003, PR China
2Department of Cardiology, Henan Provincial People’s Hospital, Zhengzhou, Henan 450003, PR China
Chuanyu Gao, email: [email protected]
Keywords: Keshan disease; iTRAQ; proteomics; DEPs; biomarker
Received: August 12, 2017 Accepted: October 05, 2017 Published: November 11, 2017
Keshan disease is a congestive cardiomyopathy. Dietary selenium deficiency combined with additional stressors are recognized to cause the cardiomyopathies. In this study, clinical condition of individuals with different subtypes including chronic and latent were analyzed. ECG abnormalities, chest radiography, echocardiography and blood selenium concentration were assessed. Subsequently, in effort to uncover proteins that were reliably changed in patients, isobaric tags for absolute and relative quantitation technology was applied. Bioinformatics analysis of the differentially expressed proteins were performed by means of Gene Ontology classification, KEGG pathway, and Ingenuity Pathway Analysis. ELISA experiment was used to detect the interesting proteins. As a result, chronic patients showed more EGC abnormalities compared to Latent. All patients had low blood selenium level. Proteomics data revealed 28 differentially expressed proteins. By ELISA variation, LGALS3BP was increased in chronic patients. PZP was elevated specially in latent patients. The above results might be beneficial for further biomarkers discovery and Keshan disease pathological mechanism study.
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