Abstract：
:Cystinuria is a purely renal, rare genetic disease caused by mutations in cystine transporter genes and characterized by defective cystine reabsorption leading to kidney stones. In 14% of cases, patients undergo nephrectomy, but given the difficulty to predict the evolution of the disease, the identification of markers of kidney damage would improve the follow-up of patients with a higher risk. The aim of the present study is to develop a robust, reproducible, and noninvasive methodology for proteomic analysis of urinary exosomes using high resolution mass spectrometry. A clinical pilot study conducted on eight cystinuria patients versus 10 controls highlighted 165 proteins, of which 38 were up-regulated, that separate cystinuria patients from controls and further discriminate between severe and moderate forms of the disease. These proteins include markers of kidney injury, circulating proteins, and a neutrophil signature. Analysis of selected proteins by immunobloting, performed on six additional cystinuria patients, validated the mass spectrometry data. To our knowledge, this is the first successful proteomic study in cystinuria unmasking the potential role of inflammation in this disease. The workflow we have developed is applicable to investigate urinary exosomes in different renal diseases and to search for diagnostic/prognostic markers. Data are available via ProteomeXchange with identifier PXD001430.
journal_name
J Proteome Resjournal_title
Journal of proteome researchauthors
Bourderioux M,Nguyen-Khoa T,Chhuon C,Jeanson L,Tondelier D,Walczak M,Ollero M,Bekri S,Knebelmann B,Escudier E,Escudier B,Edelman A,Guerrera ICdoi
10.1021/pr501003qsubject
Has Abstractpub_date
2015-01-02 00:00:00pages
567-77issue
1eissn
1535-3893issn
1535-3907journal_volume
14pub_type
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journal_title：Journal of proteome research
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