Journal
FREE RADICAL BIOLOGY AND MEDICINE
Volume 144, Issue -, Pages 203-217Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.freeradbiomed.2019.04.011
Keywords
Protein-protein interactions; Protein-membrane binding; protein-DNA recognition; Biophysical and biochemical methods; Cellular assays; Cytomimetic systems
Funding
- European Union [675132]
- Spanish Ministerio de Economia y Competitividad (MINECO/FEDER) [SAF2015-68590-R, BFU2016-75471-C2-1-P]
- ISCIII/FEDER [RD16/0006/0021]
- Marie Curie Actions (MSCA) [675132] Funding Source: Marie Curie Actions (MSCA)
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Protein modification by lipid derived reactive species, or lipoxidation, is increased during oxidative stress, a common feature observed in many pathological conditions. Biochemical and functional consequences of lipoxidation include changes in the conformation and assembly of the target proteins, altered recognition of ligands and/or cofactors, changes in the interactions with DNA or in protein-protein interactions, modifications in membrane partitioning and binding and/or subcellular localization. These changes may impact, directly or indirectly, signaling pathways involved in the activation of cell defense mechanisms, but when these are overwhelmed they may lead to pathological outcomes. Mass spectrometry provides state of the art approaches for the identification and characterization of lipoxidized proteins/residues and the modifying species. Nevertheless, understanding the complexity of the functional effects of protein lipoxidation requires the use of additional methodologies. Herein, biochemical and biophysical methods used to detect and measure functional effects of protein lipoxidation at different levels of complexity, from in vitro and reconstituted cell-like systems to cells, are reviewed, focusing especially on macromolecular interactions. Knowledge generated through innovative and complementary technologies will contribute to comprehend the role of lipoxidation in pathophysiology and, ultimately, its potential as target for therapeutic intervention.
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