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Material surfaces affect the protein expression patterns of human macrophages: A proteomics approach
Author(s) -
Dinnes Donna Lee M.,
Marçal Helder,
Mahler Stephen M.,
Santerre J. Paul,
Labow Rosalind S.
Publication year - 2006
Publication title -
journal of biomedical materials research part a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.849
H-Index - 150
eISSN - 1552-4965
pISSN - 1549-3296
DOI - 10.1002/jbm.a.30967
Subject(s) - proteomics , microbiology and biotechnology , cytoskeleton , vimentin , protein expression , quantitative proteomics , biophysics , proteome , chemistry , materials science , biology , biochemistry , cell , immunology , immunohistochemistry , gene
Monocyte‐derived macrophages (MDM) are key inflammatory cells and are central to the foreign body response to implant materials. MDM have been shown to exhibit changes in actin cytoskeleton, multinucleation, cell size, and function in response to small alterations in polycarbonate‐urethane (PCNU) surface chemistry. Although PCNU chemistry has an influence on de novo protein synthesis, no assessments of the protein expression profiles of MDM have yet been reported. The rapid emerging field of expression proteomics facilitates the study of changes in cellular protein profiles in response to their microenvironment. The current study applied proteomic techniques, 2‐dimensional electrophoresis (2‐DE) combined with MALDI‐ToF (matrix assisted laser desorption ionization–time of flight) mass spectrometry, to determine differences in MDM protein expression influenced by PCNU. Results indicated that MDM responded to material chemistry by modulation of structural proteins (i.e. actin, vimentin, and tubulin). Additionally, intracellular protein modulation which requires proteins responsible for trafficking (i.e. chaperone proteins) and protein structure modification (i.e. bond rearrangement and protein folding) were also altered. This study demonstrated for the first time that a proteomics approach was able to detect protein expression profile changes in MDM cultured on different material surfaces, forming the basis for utilizing further quantitative proteomics techniques that could assist in elucidation of the mechanisms involved in MDM–material interaction. © 2006 Wiley Periodicals, Inc. J Biomed Mater Res, 2006