Complement activation dramatically accelerates blood plasma fouling on antifouling poly(2-hydroxyethyl methacrylate) brush surfaces

0555739 - ÚMCH 2023 RIV DE eng J - Journal Article
Riedel, Tomáš - de los Santos Pereira, Andres - Táborská, Johanka - Riedelová, Zuzana - Pop-Georgievski, Ognen - Májek, P. - Pečánková, K. - Rodriguez-Emmenegger, C.
Complement activation dramatically accelerates blood plasma fouling on antifouling poly(2-hydroxyethyl methacrylate) brush surfaces.
Macromolecular Bioscience. Roč. 22, č. 3 (2022), č. článku 2100460. ISSN 1616-5187. E-ISSN 1616-5195
R&D Projects: GA ČR(CZ) GA20-10845S
Grant - others:AV ČR(CZ) MSM200502001
Program: Program na podporu mezinárodní spolupráce začínajících výzkumných pracovníků
Institutional support: RVO:61389013
Keywords : antifouling coatings * complement C3 * polymer brushes
OECD category: Biophysics
Impact factor: 4.6, year: 2022
Method of publishing: Limited access
https://onlinelibrary.wiley.com/doi/10.1002/mabi.202100460

Non-specific protein adsorption (fouling) triggers a number of deleterious events in the application of biomaterials. Antifouling polymer brushes successfully suppress fouling, however for some coatings an extremely high variability of fouling for different donors remains unexplained. The authors report that in the case of poly(2-hydroxyethyl methacrylate) (poly(HEMA)) this variability is due to the complement system activation that causes massive acceleration in the fouling kinetics of blood plasma. Using plasma from various donors, the fouling kinetics on poly(HEMA) is analyzed and correlated with proteins identified in the deposits on the surface and with the biochemical compositions of the plasma. The presence of complement components in fouling deposits and concentrations of C3a in different plasmas indicate that the alternative complement pathway plays a significant role in the fouling on poly(HEMA) through the “tick-over” mechanism of spontaneous C3 activation. The generated C3b binds to the poly(HEMA) surface and amplifies complement activation locally. Heat-inactivated plasma prevents accelerated fouling kinetics, confirming the central role of complement activation. The results highlight the need to take into account the variability between individuals when assessing interactions between biomaterials and blood plasma, as well as the importance of the mechanistic insight that can be gained from protein identification.
Permanent Link: http://hdl.handle.net/11104/0330403