Comparative proteomics and glycoproteomics of plasma proteins in Indian visceral leishmaniasis
IR@IICB: CSIR-Indian Institute of Chemical Biology, Kolkata
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| Title |
Comparative proteomics and glycoproteomics of plasma proteins in Indian visceral leishmaniasis
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| Creator |
Bag, Arup Kumar
Saha, Sutapa Sundar, Shyam Saha, Bibhuti Chakrabarti, Abhijit Mandal, Chitra |
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| Subject |
Cancer Biology and Inflammatory Disorder Division
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| Description |
Visceral leishmaniasis (VL) is a deadly parasitic diseases caused by Leishmania donovani; it is a major
health problem in many countries. A lack of proper understanding of the disease biology, poor diagnostic methods and increasing drug resistance are the main reasons for the growing burden of VL infection. Comparative plasma
proteomics are a relatively useful technique that can be used to investigate disease-associated alterations that can
help in understanding host responses against pathogens, and might be useful in disease management and diagnosis.
In this study, a comparative proteomics and glycoproteomics approach using 2DE and 2D-DIGE was employed between early diagnosed VL patients of all age groups and healthy endemic and non-endemic controls in order to aid the recognition of disease-associated alterations in host plasma. Comparative proteomics was performed by the depletion of seven highly abundant plasma proteins. Comparative glycoproteomics was performed by thedepletion of albumin and IgG, followed by purification of plasma glycoproteins using a multi lectin affinity column. From these two approaches, 39 differentially expressed protein spots were identified and sequenced using MALDI-TOF/TOF mass spectrometry. This revealed ten distinct proteins that appeared in multiple spots, suggesting micro-heterogeneity. Among these proteins, alpha-1-antitrypsin, alpha-1-B glycoprotein and amyloid-A1 precursor were up-regulated, whereas
vitamin-D binding protein, apolipoprotein-A-I and transthyretin were down-regulated in VL. Alterations in the levels of these proteins in VL-infected plasma were further confirmed by western blot and ELISA. These proteins may be involved in the survival of parasites, resisting neutrophil elastase, and in their multiplication in macrophages, potentially maintaining endogenous anti-inflammatory and immunosuppressive conditions. Consequently, the results of this study may help in understanding the host response against L.donovani, which could help in the discovery of new drugs and disease management. Finally, these alterations on protein levels might be beneficial in improving early diagnosis considering those as biomarkers in Indian VL.
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| Publisher |
BioMed Central
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| Date |
2014
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://www.eprints.iicb.res.in/2163/1/PROTEOME_SCIENCE__V_12_____Article_Number_48;2014[30].pdf
Bag, Arup Kumar and Saha, Sutapa and Sundar, Shyam and Saha, Bibhuti and Chakrabarti, Abhijit and Mandal, Chitra (2014) Comparative proteomics and glycoproteomics of plasma proteins in Indian visceral leishmaniasis. Proteome Science, 12 (48). |
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| Relation |
http://www.eprints.iicb.res.in/2163/
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