Compositions and methods for efficient delivery of molecules to cells
First Claim
1. A lipid aggregate comprising dihydroxyl-dimyristylspermine (DHDMS) or a salt thereof and hydroxyl-dimyristylspermine (HDMS) or a salt thereof, a first neutral lipid and optionally a second neutral lipid, wherein said lipid aggregate is suitable for forming a cationic complex with a nucleic acid under aqueous conditions, wherein said DHDMS has the structure:
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Abstract
The present invention provides lipid aggregate compositions having at least two cationic lipids in combination with one or optionally more than one non-cationic lipids for the in vitro and/or in vivo delivery of biologically active molecules including nucleic acids, specifically DNA and RNA, and proteins into cells and tissues. Methods are also provided that use the compounds of the present invention to deliver biologically active molecules, into cells and tissues to facilitate the expression of target proteins therein. In some non-limiting embodiments, the subject lipid aggregate compositions can be used to deliver nucleic acid molecules to facilitate the expression of proteins involved in cellular reprogramming and genome editing applications.
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35 Claims
- 1. A lipid aggregate comprising dihydroxyl-dimyristylspermine (DHDMS) or a salt thereof and hydroxyl-dimyristylspermine (HDMS) or a salt thereof, a first neutral lipid and optionally a second neutral lipid, wherein said lipid aggregate is suitable for forming a cationic complex with a nucleic acid under aqueous conditions, wherein said DHDMS has the structure:
- 20. A lipid aggregate-RNA complex comprising about 0.1-0.4 molar ratio of each of DHDMS, HDMS, cholesterol and DOPE and an RNA molecule, said lipid aggregate-RNA complex being cationic in an aqueous solution at pH about 6 to about 8.
Specification