Transfection Studies with Colloidal Systems Containing Highly Purified Bipolar Tetraether Lipids from Sulfolobus acidocaldarius
Joint Authors
Engelhardt, Konrad H.
Pinnapireddy, Shashank Reddy
Baghdan, Elias
Jedelská, Jarmila
Bakowsky, Udo
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-01-23
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Lipid vectors are commonly used to facilitate the transfer of nucleic acids into mammalian cells.
In this study, two fractions of tetraether lipids from the archaea Sulfolobus acidocaldarius were extracted and purified using different methods.
The purified lipid fractions polar lipid fraction E (PLFE) and hydrolysed glycerol-dialkyl-nonitol tetraether (hGDNT) differ in their structures, charge, size, and miscibility from conventional lipids.
Liposomes were prepared by mixing tetraether lipids with cholesterol (CH) and 1,2-dioleoyl-3-trimethylammonium-propane (DOTAP) resulting in stable vectors for gene delivery.
Lipoplexes were prepared by complexation of liposomes with a luciferase expressing plasmid (pCMV-luc) at certain nitrogen-to-phosphorus (N/P) ratios and optimised for the transient transfection of ovarian adenocarcinoma cells (SK-OV-3).
Complexation efficacy was investigated by gel-red fluorescence assay.
Biophysical properties, like size, surface charge, and morphology, were investigated by differential light scattering (DLS), atomic force microscopy (AFM), and scanning electron microscopy (Cryo-SEM), respectively, revealing structural differences between liposomes and lipoplexes.
A range of stable transfecting agents containing tetraether lipids were obtained by incorporating 5 mol% of tetraether lipids.
Lipoplexes showed a decrease in free gel-red with increasing N/P ratios indicating efficient incorporation of plasmid DNA (pDNA) and remarkable stability.
Transfection experiments of the lipoplexes revealed successful and superior transfection of SK-OV-3 cell line compared to the commercially available DOTAP and branched polyethyleneimine (25 kDa bPEI).
American Psychological Association (APA)
Engelhardt, Konrad H.& Pinnapireddy, Shashank Reddy& Baghdan, Elias& Jedelská, Jarmila& Bakowsky, Udo. 2017. Transfection Studies with Colloidal Systems Containing Highly Purified Bipolar Tetraether Lipids from Sulfolobus acidocaldarius. Archaea،Vol. 2017, no. 2017, pp.1-12.
https://search.emarefa.net/detail/BIM-1125474
Modern Language Association (MLA)
Engelhardt, Konrad H.…[et al.]. Transfection Studies with Colloidal Systems Containing Highly Purified Bipolar Tetraether Lipids from Sulfolobus acidocaldarius. Archaea No. 2017 (2017), pp.1-12.
https://search.emarefa.net/detail/BIM-1125474
American Medical Association (AMA)
Engelhardt, Konrad H.& Pinnapireddy, Shashank Reddy& Baghdan, Elias& Jedelská, Jarmila& Bakowsky, Udo. Transfection Studies with Colloidal Systems Containing Highly Purified Bipolar Tetraether Lipids from Sulfolobus acidocaldarius. Archaea. 2017. Vol. 2017, no. 2017, pp.1-12.
https://search.emarefa.net/detail/BIM-1125474
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1125474