Journal
EUROPEAN JOURNAL OF MASS SPECTROMETRY
Volume 26, Issue 2, Pages 158-161Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/1469066719860076
Keywords
Proteomics; protein misfolding; amyloid-like aggregates; Congo red; preeclamsia; high-resolution mass spectrometry
Funding
- RFBR [18-315-00435 mol-a]
- Grant of the President for leading scientific schools [NS-4566.2018.7, 075-02-2018-519]
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The study of protein misfolding and post-translational processing abnormalities is a promising diagnostic approach for socially significant pathologies associated with the accumulation of abnormal forms of proteins. Recently, it was shown that amyloid-like aggregates can be observed in the urine of pregnant women with preeclampsia, which is the most severe hypertensive complication that can lead to fateful outcomes. The protein composition of urine aggregates may clarify the molecular mechanisms underlying the pathology and has not yet been studied in detail. Using a proteomic approach based on high-resolution mass spectrometry, we studied the protein composition of amyloid-like structures that aggregate in the presence of Congo red azo-dye in the urine of pregnant women with preeclampsia. Fragments of beta-sheets of alpha-1-antitrypsin, complement 3, haptoglobin, ceruloplasmin, and trypstatin were identified as most likely targets for Congo red binding.
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