New cationic lipids are provided that are useful for delivering macromolecules, such as nucleic acids, into eukaryotic cells. The lipids can be used alone, in combination with other lipids and/or in combination with other transfection enhancing reagents to prepare transfection complexes.

Provided herein are improved methods for preparing phospholipid formulations including phospholipid UCA formulations.

A transfection reagent composition comprising: 30-60 MOL % of an cationic lipid, or pharmaceutical acceptable salt thereof; 10-60 MOL % structural lipid; a sterol and 0.1 to about 10 MOL % of a stabilizing agent is provided. The reagent is particularly adapted for neuron and related cell types. A method of manufacturing LNP including nucleic acid for selective uptake into either neurons or astrocytes or neural progenitor cells is also provided.

The present invention relates to a low-fat water-in-oil (W/O) emulsion comprising a fat phase in an amount of at most 60 wt % relative to the total weight of the emulsion, an aqueous phase dispersed within the fat phase and an emulsifier composition, said emulsifier composition comprising an Acetone-insoluble (AI) component containing a Phosphatidyl Choline (PC), a Phosphatidyl Inositol (PI), a Phosphatidyl Ethanolamine (PE) and a Phosphatidic Acid (PA), wherein PC is in an amount of at most 15.5% relative to the total weight of the emulsifier composition and wherein the emulsifier composition is characterized by a weight ratio R of at most 65%, the ratio R being defined as (1) wherein PC+PI+PE+PA is the sum of the individual weights of the respective constituents of the AI component and AI is the total weight of the AI component.

A compound presented by the following Chemical Formula 1, a racemic form, or a salt thereof:

##STR00001## wherein, X represents an oxygen atom, a nitrogen atom, a sulfur atom, or a carbon atom, R.sup.1 represents R.sup.1a—Y—R.sup.1b (wherein R.sup.1a and R.sup.1b each independently represent a saturated or unsaturated aliphatic hydrocarbon group, an aromatic group, a heterocyclic group, or a combination thereof, and Y represents an oxygen atom, a nitrogen atom, a sulfur atom, or a carbon atom), R.sup.2 represents a saturated or unsaturated aliphatic hydrocarbon group, and R.sup.3 represents choline, ethanolamine, inositol, or serine.

New cationic lipids are provided that are useful for delivering macromolecules, such as nucleic acids, into eukaryotic cells. The lipids can be used alone, in combination with other lipids and/or in combination with other transfection enhancing reagents to prepare transfection complexes.

The present invention relates to a compound having a structure according to formula (I) or a salt thereof, wherein: R.sub.1 is a branched or linear alkyl, acyl, alkenyl, hydroxyalkyl, hydroxyalkenyl, or hydroxy-alkinyl residue comprising 6 to 30 carbon atoms, R.sub.2 is selected from the group consisting of: a) an alkyl residue comprising 1 to 10 carbon atoms and comprising a terminal or cyclic quaternary ammonium, b) an alkyl residue comprising 1 to 10 carbon atoms and comprising a terminal amino group and/or 1 to 3 hydroxyl groups, c) an amino acid residue, d) a five or six carbon sugar and e) H, R.sub.3 is a residue selected from the group consisting of an alkyl, alkenyl, prostanyl-dialkyl, furanyl-dialkyl, cyclobutyl-dialkyl, cycloalkyl and aryl group of 2 to 40 carbon atoms length and comprising at least one keto group, epoxy group, aldehyde group, peroxy group, hydroperoxy group, hydroxyl group or a free carboxyl group, L1 is selected from the group consisting of O, NH, S, CH.sub.2, (aa), (bb), (cc), (dd), (ee), (ff), (gg), (hh), (ii), (jj), (kk), (ll), (mm), or (nn), L2 is an amide group or an ether group, X and Z are independently O, S or CH.sub.2, and Y is selected from the group consisting of O and S. ##STR00001##

Described herein, inter alia, are compositions and methods useful for the reconstitution of membrane proteins.

Provided herein are improved methods for preparing phospholipid formulations including phospholipid UCA formulations.

This disclosure provides compounds, pharmaceutical compositions, and methods of use for the prevention and treatment of inflammatory diseases or degenerative diseases including neurodegenerative diseases. Embodiments of the present disclosure provide compounds related to very long chain polyunsaturated fatty acids, pharmaceutical compositions containing the provided compounds, and methods of treating a subject with a condition or disease using provided compounds or pharmaceutical compositions.