Sugar alcohol-based compositions for delivering nucleic acid-based drugs in vivo and in vitro
First Claim
1. A method for formulating nucleic acid compositions with sugars and sugar alcohols into stable complexes for both in-vitro and in-vivo delivery into mammalian cells, comprising:
- (a) providing at least a nucleic acid composition with at least a negative charge;
(b) preparing at least one sugar or sugar alcohol composition modified by glycylation to form a glycylated sugar or sugar alcohol composition;
wherein said glycylation is a chemical reaction that replaces the hydroxyl (HO—
) groups of a sugar alcohol or sugar with glycyl (NH2CH2COO—
) groups and thus results in the formation of an ether (R—
O—
R) linkage between each OH-removed carbon of the sugar alcohol or sugar and the glycyl group and wherein said glycylation reaction occurs under a pH value ranged from 2.5 to 8.0 at a temperature over 45°
C. for at least 30 minutes;
wherein the sugar alcohol has a formula of H(HCHO)n+1H, and the sugar has a formula of H(HCHO)nHCO, and wherein the optimal concentration of said glycyl group is ranged from 0.05 to 3.0 M for mixing with per 1.0 M of sugar alcohol in the glycylation reaction; and
(c) mixing the nucleic acid composition from (a) and the glycylated sugar or sugar alcohol composition from (b) together under a condition below pH 8.0 to form at least a delivery complex.
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Accused Products
Abstract
This invention relates to a composition and its use for formulating nucleic acid-based drugs/vaccines with sugar alcohol compositions into complexes for both in-vitro and in-vivo delivery. Particularly, the present invention includes the ingredients and processes necessary for formulating therapeutic and pharmaceutical nucleic acid compositions, such as miRNA, microRNA precursors, shRNAs, siRNAs, ribozymes, antisense RNAs/DNAs, RNA-DNA hybrids and DNA vectors/vaccines, with glycylated sugar alcohols/sugars into delivery complexes, which can then be absorbed by cells in vivo and in vitro via active endocytosis. Also, the present invention discloses that chemical compounds containing sugar alcohol- and/or sugar-like structures can protect nucleic acids, in particular miRNAs, shRNAs, siRNAs and ribozymes, from degradation in vivo as well as in vitro. Therefore, the present invention is also a formula and method for preserving the structural integrity and functional efficacy of these nucleic acid-based drugs and/or vaccines in vivo and in vitro.
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Citations
30 Claims
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1. A method for formulating nucleic acid compositions with sugars and sugar alcohols into stable complexes for both in-vitro and in-vivo delivery into mammalian cells, comprising:
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(a) providing at least a nucleic acid composition with at least a negative charge; (b) preparing at least one sugar or sugar alcohol composition modified by glycylation to form a glycylated sugar or sugar alcohol composition;
wherein said glycylation is a chemical reaction that replaces the hydroxyl (HO—
) groups of a sugar alcohol or sugar with glycyl (NH2CH2COO—
) groups and thus results in the formation of an ether (R—
O—
R) linkage between each OH-removed carbon of the sugar alcohol or sugar and the glycyl group and wherein said glycylation reaction occurs under a pH value ranged from 2.5 to 8.0 at a temperature over 45°
C. for at least 30 minutes;wherein the sugar alcohol has a formula of H(HCHO)n+1H, and the sugar has a formula of H(HCHO)nHCO, and wherein the optimal concentration of said glycyl group is ranged from 0.05 to 3.0 M for mixing with per 1.0 M of sugar alcohol in the glycylation reaction; and (c) mixing the nucleic acid composition from (a) and the glycylated sugar or sugar alcohol composition from (b) together under a condition below pH 8.0 to form at least a delivery complex. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for delivering nucleic acids into cells in vitro as well as in vivo, comprising:
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mixing at least a glycerol (glycerin) composition with hydroxyl group, at least one amino acid with a structure of glycyl group, and at least a nucleic acid composition, wherein said mixing forms at least one glycylated glycerol (glycerin) composition which interacts with said nucleic acid composition via ionic or electrostatic affinity and forms a delivery complex at a pH value below 8.0, wherein said glycylated glycerol (glycerin) composition is formed by a glycylation reaction that replaces the hydroxyl (HO—
) groups of said glycerol (glycerin) composition with glycyl (NH2CH2COO—
) groups and thus results in the formation of an ether (R—
O—
R) linkage between each OH-removed carbon of the glycerol (glycerin) composition and the glycyl group and wherein said glycylation reaction occurs under a pH value ranged from 2.5 to 8.0 at a temperature over 45°
C. for at least 30 minutes; and
wherein the optimal concentration of said glycyl group in the glycylation reaction is ranged from 0.05 to 3.0 M for mixing with per 1.0 M of sugar alcohol in the glycylation reaction. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification