The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 01, 2020
Filed:
May. 22, 2019
Boke Zhang, Brighton, MA (US);
Boke Zhang, Brighton, MA (US);
Boke ZHANG, Brighton, MA (US);
Abstract
Method for preparing botulinum neurotoxin and nanoparticle thereof are provided. The method includes fermenting bacteriain a fermentation media free of animal-derived ingredients and contacting the fermentation media with an anion exchange media slurry and obtaining a supernatant including the botulinum neurotoxin by centrifugation. The method further includes dialyzing the supernatant and collecting a dialyzed solution including the botulinum neurotoxin, contacting the dialyzed solution with an anion exchange chromatography column, contacting an elute collected from the anion exchange chromatography column with a cation exchange chromatography column, and collecting an elute. The nanoparticle includes multi-layer including an innermost water phase core including biomolecules encapsulated by an oil phase layer, thereby forming a water-in-oil structure, water phase layers; oil phase layers; and an outmost cream layer. The water phase layers and the oil phase layers alternatively encapsulate the water-in-oil structure. The biomolecules include botulinum neurotoxin and/or hyaluronic acid.