Gene Transfection Efficacies of Novel Cationic Gemini Lipids Possessing Aromatic Backbone and Oxyethylene Spacers

Bajaj, Avinash and Kondaiah, Paturu and Bhattacharya, Santanu (2008) Gene Transfection Efficacies of Novel Cationic Gemini Lipids Possessing Aromatic Backbone and Oxyethylene Spacers. In: Biomacromolecules, 9 (3). pp. 991-999.

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Abstract

Six novel gemini cationic lipids based on aromatic backbone, bearing n-C14H29 or n-C16H33 hydrocarbon chains, differing in the length of oxyethylene type spacers −CH2-(CH2-O-CH2)m-CH2− between each ammonium headgroups have been synthesized, where m varies from 1 to 3. Each of these lipids formed stable suspensions in aqueous media. Cationic liposomes were prepared from each of these lipids individually and as mixtures of each cationic lipid and DOPE. These were used as nonviral gene delivery agents. Transfection studies showed that among lipids bearing n-C14H29 chains, the transfection efficacies decreased with the increase in the length of the spacer, whereas in case of lipids bearing n-C16H33 chains, the transfection efficacies increased with the increase in the length of the spacer. Lipid bearing n-C16H33 hydrocarbon chains with a [−(CH2-CH2-O-CH2-CH2-O-CH2-CH2-O-CH2-CH2)−] spacer was found to be a potent gene transfer agent and its transfection was highly serum compatible even in the presence of 50% serum conditions.

Item Type:	Journal Article
Publication:	Biomacromolecules
Publisher:	American Chemical Society
Additional Information:	Copyright of this article belongs to American Chemical Society.
Department/Centre:	Division of Biological Sciences > Molecular Reproduction, Development & Genetics Division of Chemical Sciences > Organic Chemistry
Date Deposited:	29 Mar 2010 08:13
Last Modified:	19 Sep 2010 05:58
URI:	http://eprints.iisc.ac.in/id/eprint/26470

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