Development of a sandwich ELISA for the 5.9-kDa fibrinogen alpha C chain fragment detected by serum proteome analysis

Purpose: We previously identified novel biomarker candidates in heavy consumers of alcohol using serum proteome analysis. Among several candidates, a 5.9 kDa peptide identified as a fragment of the fibrinogen alpha C chain (FIC5.9) was the most promising. To move FIC5.9 toward potential diagnostic u...

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Veröffentlicht in:Proteomics. Clinical applications 2011-04, Vol.5 (3-4), p.141-146
Hauptverfasser: Noda, Kenta, Sogawa, Kazuyuki, Kikuchi, Wataru, Kiyokawa, Iwao, Miura, Toshihide, Kojima, Ryo, Katayama, Katsuhiro, Kodera, Yoshio, Nomura, Fumio
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container_end_page 146
container_issue 3-4
container_start_page 141
container_title Proteomics. Clinical applications
container_volume 5
creator Noda, Kenta
Sogawa, Kazuyuki
Kikuchi, Wataru
Kiyokawa, Iwao
Miura, Toshihide
Kojima, Ryo
Katayama, Katsuhiro
Kodera, Yoshio
Nomura, Fumio
description Purpose: We previously identified novel biomarker candidates in heavy consumers of alcohol using serum proteome analysis. Among several candidates, a 5.9 kDa peptide identified as a fragment of the fibrinogen alpha C chain (FIC5.9) was the most promising. To move FIC5.9 toward potential diagnostic use, we developed an enzyme immunoassay that enables measurement of serum FIC5.9 levels. Experimental design: Two monoclonal antibodies specific to the N and C‐termini of the 5.9‐kDa peptide were used to develop a FIC5.9 sandwich ELISA. The assay was evaluated by comparing the results with those obtained by the stable isotope‐labeled dilution mass spectrometry (SID‐MS) using the ClinProt™ system. Results: The ELISA results correlated with the SID‐MS findings (slope=0.795, intercept=−0.011, r2=0.908) and the performance of the ELISA was satisfactory in terms of recovery (98.5–103.0%) and within‐run (1.4–4.7%) and between‐day (2.8–8.4%) reproducibility. The assay was capable of detecting changes in FIC5.9 during abstinence from drinking in patients with alcohol dependency (p
doi_str_mv 10.1002/prca.201000127
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Among several candidates, a 5.9 kDa peptide identified as a fragment of the fibrinogen alpha C chain (FIC5.9) was the most promising. To move FIC5.9 toward potential diagnostic use, we developed an enzyme immunoassay that enables measurement of serum FIC5.9 levels. Experimental design: Two monoclonal antibodies specific to the N and C‐termini of the 5.9‐kDa peptide were used to develop a FIC5.9 sandwich ELISA. The assay was evaluated by comparing the results with those obtained by the stable isotope‐labeled dilution mass spectrometry (SID‐MS) using the ClinProt™ system. Results: The ELISA results correlated with the SID‐MS findings (slope=0.795, intercept=−0.011, r2=0.908) and the performance of the ELISA was satisfactory in terms of recovery (98.5–103.0%) and within‐run (1.4–4.7%) and between‐day (2.8–8.4%) reproducibility. The assay was capable of detecting changes in FIC5.9 during abstinence from drinking in patients with alcohol dependency (p&lt;0.0001). Conclusions and clinical relevance: The sandwich ELISA developed in this study will be useful for validation of the diagnostic significance of serum FIC5.9 levels in various pathological conditions, including alcoholism.</description><identifier>ISSN: 1862-8346</identifier><identifier>EISSN: 1862-8354</identifier><identifier>DOI: 10.1002/prca.201000127</identifier><identifier>PMID: 21360827</identifier><language>eng</language><publisher>Weinheim: WILEY-VCH Verlag</publisher><subject>Alcoholism - blood ; Biological and medical sciences ; Diverse techniques ; Enzyme-Linked Immunosorbent Assay - methods ; Fibrinogen ; Fibrinogen alpha C chain ; Fundamental and applied biological sciences. 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Clinical applications</title><addtitle>Prot. Clin. Appl</addtitle><description>Purpose: We previously identified novel biomarker candidates in heavy consumers of alcohol using serum proteome analysis. Among several candidates, a 5.9 kDa peptide identified as a fragment of the fibrinogen alpha C chain (FIC5.9) was the most promising. To move FIC5.9 toward potential diagnostic use, we developed an enzyme immunoassay that enables measurement of serum FIC5.9 levels. Experimental design: Two monoclonal antibodies specific to the N and C‐termini of the 5.9‐kDa peptide were used to develop a FIC5.9 sandwich ELISA. The assay was evaluated by comparing the results with those obtained by the stable isotope‐labeled dilution mass spectrometry (SID‐MS) using the ClinProt™ system. 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Clinical applications</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Noda, Kenta</au><au>Sogawa, Kazuyuki</au><au>Kikuchi, Wataru</au><au>Kiyokawa, Iwao</au><au>Miura, Toshihide</au><au>Kojima, Ryo</au><au>Katayama, Katsuhiro</au><au>Kodera, Yoshio</au><au>Nomura, Fumio</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Development of a sandwich ELISA for the 5.9-kDa fibrinogen alpha C chain fragment detected by serum proteome analysis</atitle><jtitle>Proteomics. Clinical applications</jtitle><addtitle>Prot. Clin. Appl</addtitle><date>2011-04</date><risdate>2011</risdate><volume>5</volume><issue>3-4</issue><spage>141</spage><epage>146</epage><pages>141-146</pages><issn>1862-8346</issn><eissn>1862-8354</eissn><abstract>Purpose: We previously identified novel biomarker candidates in heavy consumers of alcohol using serum proteome analysis. 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Conclusions and clinical relevance: The sandwich ELISA developed in this study will be useful for validation of the diagnostic significance of serum FIC5.9 levels in various pathological conditions, including alcoholism.</abstract><cop>Weinheim</cop><pub>WILEY-VCH Verlag</pub><pmid>21360827</pmid><doi>10.1002/prca.201000127</doi><tpages>6</tpages></addata></record>
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subjects Alcoholism - blood
Biological and medical sciences
Diverse techniques
Enzyme-Linked Immunosorbent Assay - methods
Fibrinogen
Fibrinogen alpha C chain
Fundamental and applied biological sciences. Psychology
Humans
Liver disease
Male
Mass Spectrometry
Medical research
Middle Aged
Molecular and cellular biology
Peptide Fragments - blood
Proteome - analysis
Proteomics
Reproducibility of Results
Sandwich ELISA
Sensitivity and Specificity
Serum biomarker
Stable isotope-labeled internal standard dilution-MS (SID-MS)
title Development of a sandwich ELISA for the 5.9-kDa fibrinogen alpha C chain fragment detected by serum proteome analysis
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