MALDI MSI of MeLiM melanoma: Searching for differences in protein profiles

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dc.contributor.authorGuráň, Romancs
dc.contributor.authorPompeiano Vaníčková, Luciecs
dc.contributor.authorHorák, Vratislavcs
dc.contributor.authorKřížková, Soňacs
dc.contributor.authorMichálek, Petrcs
dc.contributor.authorHeger, Zbyněkcs
dc.contributor.authorZítka, Ondřejcs
dc.contributor.authorAdam, Vojtěchcs
dc.coverage.issue12cs
dc.coverage.volume12cs
dc.date.accessioned2020-08-04T11:03:42Z
dc.date.available2020-08-04T11:03:42Z
dc.date.issued2017-12-08cs
dc.description.abstractBackground Treatment of advanced cutaneous melanoma remains challenging, and new data on melanoma biology are required. The most widely accepted criteria for the prognostic evaluation of melanoma are histopathological and clinical parameters, and the identification of additional tumor markers is thus of paramount importance. Matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI MSI), an important tool in cancer research, is useful for unraveling the molecular profile of melanoma. Methodology/Principal findings In this report, we used the melanoma-bearing Libechov minipig (MeLiM), a unique animal model that allows observation of the complete spontaneous regression of invasive cutaneous melanoma, to investigate i) the differences between melanoma and healthy skin protein profiles and ii) the proteins potentially involved in spontaneous regression. The MeLiM tissues were cryosected, histologically characterized, analyzed by MALDI MSI, and immunohistologically stained. Multivariate statistical analyses of the MALDI MSI data revealed ten relevant m/z ions, of which the expression levels varied significantly among the studied MeLiM tissues. These ion peaks were used to create mass ion images/maps and visualize the differences between tumor and healthy skin specimens, as well as among histologically characterized tissue regions. Conclusions/Significance Protein profiles comprising ten statistically significant mass ion peaks useful for differentiating cutaneous melanoma and healthy skin tissues were determined. Peaks at m/z 3044, 6011, 6140 and 10180 were overexpressed in melanoma compared with healthy skin tissue. More specifically, m/z 6140 was expressed at significantly (p < 0.05) higher levels in normally growing melanoma regions than in regions with early and late spontaneous regression. This study demonstrates the clinical utility of MALDI MSI for the analysis of tissue cryosections at a molecular level.en
dc.formattextcs
dc.format.extent1-15cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationPLOS ONE. 2017, vol. 12, issue 12, p. 1-15.en
dc.identifier.doi10.1371/journal.pone.0189305cs
dc.identifier.issn1932-6203cs
dc.identifier.other142853cs
dc.identifier.urihttp://hdl.handle.net/11012/137971
dc.language.isoencs
dc.publisherPLOScs
dc.relation.ispartofPLOS ONEcs
dc.relation.urihttp://europepmc.org/articles/PMC5722329?pdf=rendercs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1932-6203/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectprotein profilesen
dc.subjectMALDI MSIen
dc.subjectMeLiM melanomaen
dc.titleMALDI MSI of MeLiM melanoma: Searching for differences in protein profilesen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-142853en
sync.item.dbtypeVAVen
sync.item.insts2020.08.04 13:03:42en
sync.item.modts2020.08.04 12:30:55en
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Chytré nanonástrojecs
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