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  Lysine-based amino-functionalized lipids for gene transfection: The protonation state in monolayers at the air-liquid interface

Taßler, S., Wolk, C., Janich, C., Dobner, B., & Brezesinski, G. (2017). Lysine-based amino-functionalized lipids for gene transfection: The protonation state in monolayers at the air-liquid interface. Physical Chemistry Chemical Physics, 19(30), 20271-20280. doi:10.1039/C7CP03107F.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-002D-AB28-E Versions-Permalink: https://hdl.handle.net/21.11116/0000-0000-553F-B
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 Urheber:
Taßler, Stephanie1, Autor           
Wolk, Christian, Autor
Janich, Christopher, Autor
Dobner, Bodo, Autor
Brezesinski, Gerald1, Autor           
Affiliations:
1Gerald Brezesinski, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863500              

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Schlagwörter: Open Access
 Zusammenfassung: Cationic lipids are considered as non-viral carriers for genetic material used in gene therapy. They have no carcinogenic potential and cause low immune response compared to existing viral systems. The protonation degree of these cationic lipids is a crucial parameter for the binding behavior of polynucleotides (e.g.,} DNA). Newly synthesized peptide-mimic lysine-based amino-functionalized lipids have been investigated in 2D models as monolayers at the air-liquid interface. Standard surface pressure ? area isotherms have been measured to prove the layer stability. Total reflection X-ray fluorescence (TRXF) has been used as a surface sensitive analytical method to estimate the amount of counterions at the head groups. Using a standard sample as reference{, the protonation degree of these cationic lipids can be quantified on buffers with different pH values. It is found that the protonation degree depends linearly on the packing density of the lipid monolayer.

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 Datum: 2017-07-112017-08-14
 Publikationsstatus: Erschienen
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 Identifikatoren: DOI: 10.1039/C7CP03107F
BibTex Citekey: C7CP03107F
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Titel: Physical Chemistry Chemical Physics
  Kurztitel : Phys. Chem. Chem. Phys.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Cambridge, England : Royal Society of Chemistry
Seiten: - Band / Heft: 19 (30) Artikelnummer: - Start- / Endseite: 20271 - 20280 Identifikator: ISSN: 1463-9076