MOLECULAR ENTITIES FOR BINDING, STABILIZATION AND CELLULAR DELIVERY OF NEGATIVELY CHARGED MOLECULES

摘要

In accordance with the present invention, it has been discovered that the uptake of negatively charged entities into cells can be enhanced by noncovalently associating such charged entities with molecular entities comprising an amphiphilic core with positively charged arms, wherein a plurality of lipophilic (e.g., bile acid) moieties are covalently attached to the positively charged arms. The molecular entities form well defined stoichiometric complexes with negatively charged entities. Various compositions and methods for stabilizing anionic charged entities and for enhancing the cellular uptake of any anionic charged entities, e.g. double-stranded or hairpin nucleic acid, are provided.