PMID- 28433799 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201001 IS - 1936-5233 (Print) IS - 1936-5233 (Electronic) IS - 1936-5233 (Linking) VI - 10 IP - 3 DP - 2017 Jun TI - Affinity Proteomics Exploration of Melanoma Identifies Proteins in Serum with Associations to T-Stage and Recurrence. PG - 385-395 LID - S1936-5233(17)30031-1 [pii] LID - 10.1016/j.tranon.2017.03.002 [doi] AB - BACKGROUND: Blood-based proteomic profiling may aid and expand our understanding of diseases and their different phenotypes. The aim of the presented study was to profile serum samples from patients with malignant melanoma using affinity proteomic assays to describe proteins in the blood stream that are associated to stage or recurrence of melanoma. MATERIAL AND METHODS: Multiplexed protein analysis was conducted using antibody suspension bead arrays. A total of 232 antibodies against 132 proteins were selected from (i) a screening with 4595 antibodies and 32 serum samples from melanoma patients and controls, (ii) antibodies used for immunohistochemistry, (iii) protein targets previously related with melanoma. The analysis was performed with 149 serum samples from patients with malignant melanoma. Antibody selectivity was then assessed by Western blot, immunocapture mass spectrometry, and epitope mapping. Lastly, indicative antibodies were applied for IHC analysis of melanoma tissues. RESULTS: Serum levels of regucalcin (RGN) and syntaxin 7 (STX7) were found to be lower in patients with both recurring tumors and a high Breslow's thickness (T-stage 3/4) compared to low thickness (T-stage 1/2) without disease recurrence. Serum levels of methylenetetrahydrofolate dehydrogenase 1-like (MTHFD1L) were instead elevated in sera of T3/4 patients with recurrence. The analysis of tissue sections with S100A6 and MTHFD1L showed positive staining in a majority of patients with melanoma, and S100A6 was significantly associated to T-stage. CONCLUSIONS: Our findings provide a starting point to further study RGN, STX7, MTHFD1L and S100A6 in serum to elucidate their involvement in melanoma progression and to assess a possible contribution to support clinical indications. CI - Copyright (c) 2017 The Authors. Published by Elsevier Inc. All rights reserved. FAU - Bystrom, Sanna AU - Bystrom S AD - Affinity Proteomics, SciLifeLab, KTH - Royal Institute of Technology, 171 65 Solna, Sweden. FAU - Fredolini, Claudia AU - Fredolini C AD - Affinity Proteomics, SciLifeLab, KTH - Royal Institute of Technology, 171 65 Solna, Sweden. FAU - Edqvist, Per-Henrik AU - Edqvist PH AD - Department of Immunology, Genetics and Pathology, Uppsala University, 751 85 Uppsala, Sweden; Science for Life Laboratory, Uppsala University, 751 85 Uppsala, Sweden. FAU - Nyaiesh, Etienne-Nicholas AU - Nyaiesh EN AD - Affinity Proteomics, SciLifeLab, KTH - Royal Institute of Technology, 171 65 Solna, Sweden. FAU - Drobin, Kimi AU - Drobin K AD - Affinity Proteomics, SciLifeLab, KTH - Royal Institute of Technology, 171 65 Solna, Sweden. FAU - Uhlen, Mathias AU - Uhlen M AD - Affinity Proteomics, SciLifeLab, KTH - Royal Institute of Technology, 171 65 Solna, Sweden. FAU - Bergqvist, Michael AU - Bergqvist M AD - Centre for Research and Development, Uppsala University, 751 85 Uppsala, Sweden; Region Gavleborg, Gavle sjukhus, 801 88 Gavle, Sweden; Department of Radiation Sciences, Umea University, 901 87 Umea, Sweden. FAU - Ponten, Fredrik AU - Ponten F AD - Department of Immunology, Genetics and Pathology, Uppsala University, 751 85 Uppsala, Sweden; Science for Life Laboratory, Uppsala University, 751 85 Uppsala, Sweden. FAU - Schwenk, Jochen M AU - Schwenk JM AD - Affinity Proteomics, SciLifeLab, KTH - Royal Institute of Technology, 171 65 Solna, Sweden. Electronic address: jochen.schwenk@scilifelab.se. LA - eng PT - Journal Article DEP - 20170420 PL - United States TA - Transl Oncol JT - Translational oncology JID - 101472619 PMC - PMC5403766 EDAT- 2017/04/24 06:00 MHDA- 2017/04/24 06:01 PMCR- 2017/04/20 CRDT- 2017/04/24 06:00 PHST- 2017/01/16 00:00 [received] PHST- 2017/03/02 00:00 [revised] PHST- 2017/03/06 00:00 [accepted] PHST- 2017/04/24 06:00 [pubmed] PHST- 2017/04/24 06:01 [medline] PHST- 2017/04/24 06:00 [entrez] PHST- 2017/04/20 00:00 [pmc-release] AID - S1936-5233(17)30031-1 [pii] AID - 10.1016/j.tranon.2017.03.002 [doi] PST - ppublish SO - Transl Oncol. 2017 Jun;10(3):385-395. doi: 10.1016/j.tranon.2017.03.002. Epub 2017 Apr 20.