Methods for transporting a biologically active agent across a cellular membrane or a lipid bilayer. A first method includes the steps of:
(a) providing a biologically active agent which can exist in a native conformational state, a denatured conformational state, and an intermediate conformational state which is reversible to the native state and which is conformationally between the native and denatured states;
(b) exposing the biologically active agent to a complexing perturbant to reversibly transform the biologically active agent to the intermediate state and to form a transportable supramolecular complex; and
(c) exposing the membrane or bilayer to the supramolecular complex, to transport the biologically active agent across the membrane or bilayer. The perturbant has a molecular weight between about 150 and about 600 daltons, and contains at least one hydrophilic moiety and at least one hydrophobic moiety. The supramolecular complex comprises the perturbant non-covalently bound or complexed with the biologically active agent. In the present invention, the biologically active agent does not form a microsphere after interacting with the perturbant. A method for preparing an orally administrable biologically active agent comprising steps (a) and (b) above is also provided as are oral delivery compositions.
Additionally, mimetics and methods for preparing mimetics are contemplated.
COMPOSITIONS OF PENTOSAN POLYSULFATE SALTS FOR ORAL ADMINISTRATION AND METHODS OF USE
申请人:Urigen Pharmaceuticals, Inc.
公开号:EP3110427A1
公开(公告)日:2017-01-04
COMPOSITIONS AND METHODS FOR TREATMENT OF DISEASES AND CONDITIONS EMPLOYING ORAL ADMINISTRATION OF SODIUM PENTOSAN POLYSULFATE AND OTHER PENTOSAN POLYSULFATE SALTS
申请人:PARSONS C. Lowell
公开号:US20170189443A1
公开(公告)日:2017-07-06
The present invention is directed to a pharmaceutical composition comprising: (1) a therapeutically effective quantity of sodium pentosan polysulfate; (2) a quantity of a penetration enhancer sufficient to improve the bioavailability of the sodium pentosan polysulfate; and (3) optionally, a pharmaceutically acceptable carrier and to methods for the oral administration of sodium pentosan polysulfate with improved bioavailability for the treatment of interstitial cystitis and other urinary tract diseases and conditions. Such compositions and methods allow the administration of sodium pentosan polysulfate at lower dosages to reduce the frequency and severity of side effects.