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Impact of plasma oxidation on structural features of human epidermal growth factor

Maksudbek YusupovResearch Group PLASMANT, Department of Chemistry University of Antwerp, Universiteitsplein 1 Antwerp BelgiumJan‐Wilm LackmannZIK plasmatis at Leibniz Institute for Plasma Science and Technology INP Greifswald e.V. Felix‐Hausdorff‐Str. 2 Greifswald GermanyJamoliddin RazzokovResearch Group PLASMANT, Department of Chemistry University of Antwerp, Universiteitsplein 1 Antwerp BelgiumSurendra KumarCollege of Pharmacy Gachon University of Medicine and Science, Hambakmoeiro 191 Yeonsu‐gu Incheon City KoreaKatharina StapelmannInstitute for Electrical Engineering and Plasma Technology Ruhr‐University Bochum Bochum GermanyAnnemie BogaertsResearch Group PLASMANT, Department of Chemistry University of Antwerp, Universiteitsplein 1 Antwerp Belgium

2018en

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Annotatsiya

We perform computer simulations supported by experiments to investigate the oxidation of an important signaling protein, that is, human epidermal growth factor (hEGF), caused by cold atmospheric plasma (CAP) treatment. Specifically, we study the conformational changes of hEGF with different degrees of oxidation, to mimic short and long CAP treatment times. Our results indicate that the oxidized structures become more flexible, due to their conformational changes and breakage of the disulfide bonds, especially at higher oxidation degrees. MM/GBSA calculations reveal that an increasing oxidation level leads to a lower binding free energy of hEGF with its receptor. These results help to understand the fundamentals of the use of CAP for wound healing versus cancer treatment at short and longer treatment times.

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DOI: 10.1002/ppap.201800022

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