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Publication Detail
Quantitative profiling of serum samples using TMT protein labelling, fractionation and LC-MS/MS.
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Article
  • Authors:
    Sinclair J, Timms JF
  • Publication date:
    08/2011
  • Pagination:
    361, 369
  • Journal:
    Methods
  • Volume:
    54
  • Issue:
    4
  • Status:
    Published
  • Print ISSN:
    1095-9130
  • PII:
    S1046-2023(11)00073-9
  • Language:
    ENG
Abstract
Blood-borne biomarkers are urgently required for the early detection, accurate diagnosis and prognosis of disease. Additionally, improved methods of profiling serum and plasma proteins for biomarker discovery efforts are needed. Herein, we report a quantitative method based on amino-group labelling of serum proteins (rather than peptides) with isobaric tandem mass tags (TMT) and incorporating immune-based depletion, gel-based and strong anion exchange separation of proteins prior to differential endoproteinase treatment and liquid chromatography tandem mass spectrometry. We report a generally higher level of quantitative coverage of the serum proteome compared to other peptide-based isobaric tagging approaches and show the potential of the method by applying it to a set of unique samples that pre-date the diagnosis of pancreatic cancer.
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