Polyaminoacids functionalized by alpha tocopherol and uses thereof, particular for therapeutic applications
申请人:Chan You-Ping
公开号:US20060099264A1
公开(公告)日:2006-05-11
The invention concerns novel biodegradable polyaminoacid materials, useful in particular for vectoring active principle(s). The invention also concerns novel pharmaceutical, cosmetic, dietetic or phytosanitary compositions based on said polyaminoacids. The invention aims at providing a novel polymer raw material, capable of being used for vectoring active principles and enabling optimal fulfillment of all specified requirements: biocompatibility, biodegradability, easy and inexpensive transformation into particles vectoring active principles, said particles being themselves capable of forming colloidal suspensions, of being easily associated with numerous active principles, and of releasing said active principles in vivo. Therefor, the present invention concerns first of all amphiphilic polyaminoacids comprising aspartic acid units and/or glutamic acid units, characterized in that at least part of said units carry grafts including at least one alphα-tocopherol motif, for example (polyglutamate or polyaspartate grafted with alphα-tocopherol of synthetic or natural origin).
本发明涉及一种新型的可生物降解的聚氨基酸材料,特别适用于向活性成分进行向导。本发明还涉及一种基于该聚氨基酸的新型制药、化妆品、饮食或植物保护组合物。本发明旨在提供一种新型聚合物原料,能够用于向导活性成分,并实现所有指定要求的最佳实现:生物相容性、生物降解性、易于且低廉的转化为向导活性成分的颗粒,这些颗粒本身能够形成胶体悬浮液,易于与众多活性成分结合,并在体内释放这些活性成分。因此,本发明首先涉及包含天冬氨酸单元和/或谷氨酸单元的两性聚氨基酸,其特征在于至少部分单元携带包括至少一个α-生育酚基团的嫁接物,例如(来自合成或天然来源的α-生育酚嫁接的聚谷氨酸或聚天冬氨酸)。