Serum proteomic signature of human chagasic patients for the identification of novel potential protein biomarkers of disease

Jian Jun Wen, M. Paola Zago, Sonia Nuñez, Shivali Gupta, Federico Nuñez Burgos, Nisha Garg

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Chagas disease is initiated upon infection by Trypanosoma cruzi. Among the health consequences is a decline in heart function, and the pathophysiological mechanisms underlying this manifestation are not well understood. To explore the possible mechanisms, we employed IgY LC10 affinity chromatography in conjunction with ProteomeLab PF2D and two-dimensional gel electrophoresis to resolve the proteome signature of high and low abundance serum proteins in chagasic patients. MALDI-TOF MS/MS analysis yielded 80 and 14 differentially expressed proteins associated with cardiomyopathy of chagasic and other etiologies, respectively. The extent of oxidative stress-induced carbonyl modifications of the differentially expressed proteins ( n = 26) was increased and coupled with a depression of antioxidant proteins. Functional annotation of the top networks developed by ingenuity pathway analysis of proteome database identified dysregulation of inflammation/ acute phase response signaling and lipid metabolism relevant to production of prostaglandins and arachidonic acid in chagasic patients. Overlay of the major networks identified prothrombin and plasminogen at a nodal position with connectivity to proteome signature indicative of heart disease ( i.e., thrombosis, angiogenesis, vasodilatation of blood vessels or the aorta, and increased permeability of blood vessel and endothelial tubes), and inflammatory responses (e.g. , platelet aggregation, complement activation, and phagocyte activation and migration). The detection of cardiac proteins (myosin light chain 2 and myosin heavy chain 11) and increased levels of vinculin and plasminogen provided a comprehensive set of biomarkers of cardiac muscle injury and development of clinical Chagas disease in human patients. These results provide an impetus for biomarker validation in large cohorts of clinically characterized chagasic patients.

Original languageEnglish
Pages (from-to)435-452
Number of pages18
JournalMolecular and Cellular Proteomics
Volume11
Issue number8
DOIs
StatePublished - Aug 2012

Fingerprint

Biomarkers
Proteome
Proteomics
Plasminogen
Blood vessels
Chagas Disease
Serum
Chemical activation
Vinculin
Blood Vessels
Affinity chromatography
Proteins
Oxidative stress
Myosin Heavy Chains
Prothrombin
Cardiac Myosins
Platelets
Electrophoresis
Arachidonic Acid
Acute-Phase Reaction

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Analytical Chemistry

Cite this

Serum proteomic signature of human chagasic patients for the identification of novel potential protein biomarkers of disease. / Wen, Jian Jun; Zago, M. Paola; Nuñez, Sonia; Gupta, Shivali; Burgos, Federico Nuñez; Garg, Nisha.

In: Molecular and Cellular Proteomics, Vol. 11, No. 8, 08.2012, p. 435-452.

Research output: Contribution to journalArticle

Wen, Jian Jun ; Zago, M. Paola ; Nuñez, Sonia ; Gupta, Shivali ; Burgos, Federico Nuñez ; Garg, Nisha. / Serum proteomic signature of human chagasic patients for the identification of novel potential protein biomarkers of disease. In: Molecular and Cellular Proteomics. 2012 ; Vol. 11, No. 8. pp. 435-452.
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