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  Reversible protein adsorption and bioadhesion on monolayers terminated with mixtures of oligo(ethylene glycol) and methyl groups

Balamurugan, S., Ista, L. K., Yan, J., López, G. P., Fick, J., Himmelhaus, M., et al. (2005). Reversible protein adsorption and bioadhesion on monolayers terminated with mixtures of oligo(ethylene glycol) and methyl groups. Journal of the American Chemical Society, 127(42), 14548-14549. doi:10.1021/ja054156g.

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Datensatz-Permalink: https://hdl.handle.net/21.11116/0000-0001-AB50-4 Versions-Permalink: https://hdl.handle.net/21.11116/0000-0001-AB51-3
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https://pubs.acs.org/doi/pdf/10.1021/ja054156g (beliebiger Volltext)
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 Urheber:
Balamurugan, Subramanian, Autor
Ista, Linnea K., Autor
Yan, Juchao, Autor
López, Gabriel P., Autor
Fick, Jörg, Autor
Himmelhaus, Michael, Autor
Grunze, Michael1, Autor           
Affiliations:
1Cellular Biophysics, Max Planck Institute for Medical Research, Max Planck Society, ou_2364731              

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 Zusammenfassung: Surface-grafted, environmentally responsive polymers have shown great promise for controlling adsorption and desorption of macromolecules and cells on solid surfaces. In the paper, we demonstrate that certain mixed self-assembled monolayers (SAMs) of oligo(ethylene glycol) (OEG) and methyl-terminated alkanethiolates on gold form surfaces with switchable hydrophobicity and tendency for protein adsorption and cellular attachment. At temperatures above 32 degrees C, SAMs with a surface density of approximately 50% OEG adsorbed significant amounts of pyruvate kinase and lysozyme, whereas below this temperature, these same SAMs were resistant to the adsorption of these proteins. Furthermore, protein layers adsorbed to these SAMs above 32 degrees C were removed upon rinsing with water below this temperature. Similar results were seen for attachment and release of the marine bacterium, Cobetia marina. The change from nonresistance to adsorptive state of the SAMs was concomitant with a change in advancing water contact angle. Vibrational sum frequency generation spectroscopy suggests that the temperature-induced changes coincide with a disorder-to-partial order transition of the hydrated methylene chains of the OEG moieties within the SAMs. Mixed OEG-methyl SAMs represent both a convenient means of controlling macromolecular and cellular adsorption within the laboratory and a useful tool for relating adsorption properties to molecular structures within the SAMs.

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Sprache(n): eng - English
 Datum: 2005-06-232005-09-30
 Publikationsstatus: Erschienen
 Seiten: 4
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1021/ja054156g
URI: https://www.ncbi.nlm.nih.gov/pubmed/16231888
 Art des Abschluß: -

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Titel: Journal of the American Chemical Society
  Andere : J. Am. Chem. Soc.
  Kurztitel : JACS
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Washington, DC : American Chemical Society
Seiten: - Band / Heft: 127 (42) Artikelnummer: - Start- / Endseite: 14548 - 14549 Identifikator: ISSN: 0002-7863
CoNE: https://pure.mpg.de/cone/journals/resource/954925376870