An understanding of protein adsorption process is crucial for designing biomaterial surfaces. In this work, with the use of a quartz-crystal microbalance with dissipation monitoring, we researched the following: (a) the kinetics of adsorption on TiO2 surfaces of three extensively described proteins that are relevant for metallic implant integration [i.e., albumin (BSA), fibrinogen (Fbg), and fibronectin (Fn)]; and (b) the competition of those proteins for adsorbing on TiO2 in a two-step experiment consisted of sequentially exposing the surfaces to different monoprotein solutions. Each protein showed a different process of adsorption and properties of the adlayer—calculated using the Voigt model. The competition experiments showed that BSA displaced larger proteins such as Fn and Fbg when BSA was introduced as the second protein in the system, whereas the larger proteins laid on top of BSA forming an adsorbed protein bi-layer when those were introduced secondly in the system.
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Research Article|
August 09 2012
Adsorption of Fibronectin, Fibrinogen, and Albumin on TiO2: Time-Resolved Kinetics, Structural Changes, and Competition Study
Marta Pegueroles;
Marta Pegueroles
a)
1Biomaterials, Biomechanics, and Tissue Engineering Group, Department of Material Science and Metallurgy,
Technical University of Catalonia
, Av. Diagonal 647, Barcelona, 08028, Spain
2
Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN)
, Zaragoza, E50118, Spain
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Chiara Tonda-Turo;
Chiara Tonda-Turo
b)
1Biomaterials, Biomechanics, and Tissue Engineering Group, Department of Material Science and Metallurgy,
Technical University of Catalonia
, Av. Diagonal 647, Barcelona, 08028, Spain
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Josep A. Planell;
Josep A. Planell
c)
1Biomaterials, Biomechanics, and Tissue Engineering Group, Department of Material Science and Metallurgy,
Technical University of Catalonia
, Av. Diagonal 647, Barcelona, 08028, Spain
2
Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN)
, Zaragoza, E50118, Spain
3
Institute for Bioengineering of Catalonia (IBEC)
, Baldiri Reixac 13, Barcelona, 08028, Spain
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Francisco-Javier Gil;
Francisco-Javier Gil
d)
1Biomaterials, Biomechanics, and Tissue Engineering Group, Department of Material Science and Metallurgy,
Technical University of Catalonia
, Av. Diagonal 647, Barcelona, 08028, Spain
2
Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN)
, Zaragoza, E50118, Spain
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Conrado Aparicio
Conrado Aparicio
e)
1Biomaterials, Biomechanics, and Tissue Engineering Group, Department of Material Science and Metallurgy,
Technical University of Catalonia
, Av. Diagonal 647, Barcelona, 08028, Spain
4Department of Restorative Sciences, School of Dentistry, Minnesota Dental Research Center for Biomaterials and Biomechanics (MDRCBB),
University of Minnesota
, 16-212 Moos Tower, 515 Delaware St. S.E, Minneapolis, MN 55455, USA
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a)
Electronic mail: [email protected]
b)
Electronic mail: [email protected]
c)
Electronic mail: [email protected] [email protected]
d)
Electronic mail: [email protected]
e)
Author to whom correspondence should be addressed; electronic mail: [email protected]
Biointerphases 7, 48 (2012)
Article history
Received:
June 19 2012
Accepted:
July 18 2012
Citation
Marta Pegueroles, Chiara Tonda-Turo, Josep A. Planell, Francisco-Javier Gil, Conrado Aparicio; Adsorption of Fibronectin, Fibrinogen, and Albumin on TiO2: Time-Resolved Kinetics, Structural Changes, and Competition Study. Biointerphases 1 December 2012; 7 (1): 48. https://doi.org/10.1007/s13758-012-0048-4
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