Proteomics

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Identification of potential plasma biomarkers for abdominal aortic aneurysm using tandem mass tag quantitative proteomics


ABSTRACT: Plasma biomarkers that identify abdominal aortic aneurysm (AAA) rupture risk would greatly assist in stratifying patients with small aneurysms. Identification of such biomarkers has hitherto been unsuccessful over a range of studies using different methods. The present study used an alternative proteomic approach to find new, potential plasma AAA biomarker candidates. Pre-fractionated plasma samples from twelve patients with AAA and eight matched controls without aneurysm were analyzed by mass spectrometry applying a tandem mass tag (TMT) technique. Eight proteins were differentially regulated in patients compared to controls, including decreased levels of the enzyme bleomycin hydrolase. The down-regulation of this enzyme was confirmed in an extended validation study using an ELISA assay. The TMT-based proteomic approach thus identified novel potential plasma biomarkers for AAA.

INSTRUMENT(S): Q Exactive

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Blood Plasma

DISEASE(S): Aortic Aneurysm

SUBMITTER: Egor Vorontsov  

LAB HEAD: Anders E. Henriksson

PROVIDER: PXD011309 | Pride | 2018-10-22

REPOSITORIES: Pride

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