Publication detail

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

GURÁŇ, R. POMPEIANO VANÍČKOVÁ, L. HORÁK, V. KŘÍŽKOVÁ, S. MICHÁLEK, P. HEGER, Z. ZÍTKA, O. ADAM, V.

Original Title

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

Type

journal article in Web of Science

Language

English

Original Abstract

Background 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.

Keywords

protein profiles; MALDI MSI; MeLiM melanoma

Authors

GURÁŇ, R.; POMPEIANO VANÍČKOVÁ, L.; HORÁK, V.; KŘÍŽKOVÁ, S.; MICHÁLEK, P.; HEGER, Z.; ZÍTKA, O.; ADAM, V.

Released

8. 12. 2017

Publisher

PLOS

ISBN

1932-6203

Periodical

PLOS ONE

Year of study

12

Number

12

State

United States of America

Pages from

1

Pages to

15

Pages count

15

URL

http://europepmc.org/articles/PMC5722329?pdf=render

Full text in the Digital Library

http://hdl.handle.net/11012/137971

BibTex

@article{BUT142853,
  author="Roman {Guráň} and Lucie {Pompeiano Vaníčková} and Vratislav {Horák} and Soňa {Křížková} and Petr {Michálek} and Zbyněk {Heger} and Ondřej {Zítka} and Vojtěch {Adam}",
  title="MALDI MSI of MeLiM melanoma: Searching for differences in protein profiles
",
  journal="PLOS ONE",
  year="2017",
  volume="12",
  number="12",
  pages="1--15",
  doi="10.1371/journal.pone.0189305",
  issn="1932-6203",
  url="http://europepmc.org/articles/PMC5722329?pdf=render"
}