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Larkin SET, Johnston HE, Jackson TR, Jamieson DG, Roumeliotis TI, Mockridge CI, Michael A, Manousopoulou A, Papachristou EK, Brown MD, Clarke NW, Pandha H, Aukim-Hastie CL, Cragg MS, Garbis SD, Townsend PA. Detection of candidate biomarkers of prostate cancer progression in serum: a depletion-free 3D LC/MS quantitative proteomics pilot study. Br J Cancer 2016; 115:1078-1086. [PMID: 27685442 PMCID: PMC5117786 DOI: 10.1038/bjc.2016.291] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 07/18/2016] [Accepted: 08/16/2016] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Prostate cancer (PCa) is the most common male cancer in the United Kingdom and we aimed to identify clinically relevant biomarkers corresponding to stage progression of the disease. METHODS We used enhanced proteomic profiling of PCa progression using iTRAQ 3D LC mass spectrometry on high-quality serum samples to identify biomarkers of PCa. RESULTS We identified >1000 proteins. Following specific inclusion/exclusion criteria we targeted seven proteins of which two were validated by ELISA and six potentially interacted forming an 'interactome' with only a single protein linking each marker. This network also includes accepted cancer markers, such as TNF, STAT3, NF-κB and IL6. CONCLUSIONS Our linked and interrelated biomarker network highlights the potential utility of six of our seven markers as a panel for diagnosing PCa and, critically, in determining the stage of the disease. Our validation analysis of the MS-identified proteins found that SAA alongside KLK3 may improve categorisation of PCa than by KLK3 alone, and that TSR1, although not significant in this model, might also be a clinically relevant biomarker.
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Affiliation(s)
- S E T Larkin
- Cancer Sciences Unit, Southampton General Hospital, University of Southampton, Southampton SO16 6YD, UK
| | - H E Johnston
- Cancer Sciences Unit, Southampton General Hospital, University of Southampton, Southampton SO16 6YD, UK
| | - T R Jackson
- Institute of Cancer Sciences, Manchester Cancer Research Centre, Manchester Academic Health Science Centre, University of Manchester, Wilmslow Road, Manchester M20 4QL, UK
| | - D G Jamieson
- Biorelate, BASE, Greenhey's, Manchester Science Park, Pencroft Way, Manchester M15 6JJ, UK
| | - T I Roumeliotis
- Institute for Life Sciences, Centre for Proteomic Research, University of Southampton, Southampton SO17 1BJ, UK
| | - C I Mockridge
- Cancer Sciences Unit, Southampton General Hospital, University of Southampton, Southampton SO16 6YD, UK
| | - A Michael
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 7TE, UK
| | - A Manousopoulou
- Institute for Life Sciences, Centre for Proteomic Research, University of Southampton, Southampton SO17 1BJ, UK
| | - E K Papachristou
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge CB2 0RE, UK
| | - M D Brown
- Institute of Cancer Sciences, Cancer Research UK Manchester Institute, Paterson Building, Wilmslow Road, Manchester M20 4BX, UK
| | - N W Clarke
- The Christie NHS Foundation Trust, Manchester M20 4BX, UK
| | - H Pandha
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 7TE, UK
| | - C L Aukim-Hastie
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 7TE, UK
| | - M S Cragg
- Cancer Sciences Unit, Southampton General Hospital, University of Southampton, Southampton SO16 6YD, UK
| | - S D Garbis
- Cancer Sciences Unit, Southampton General Hospital, University of Southampton, Southampton SO16 6YD, UK
- Institute for Life Sciences, Centre for Proteomic Research, University of Southampton, Southampton SO17 1BJ, UK
| | - P A Townsend
- Institute of Cancer Sciences, Manchester Cancer Research Centre, Manchester Academic Health Science Centre, University of Manchester, Wilmslow Road, Manchester M20 4QL, UK
- Institute of Cancer Sciences, Cancer Research UK Manchester Institute, Paterson Building, Wilmslow Road, Manchester M20 4BX, UK
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