Expression vector delivery system and use thereof for inducing an immune response
申请人:The United States of America, as represented by the Secretary, Department of Health and Human Services
公开号:US10799580B2
公开(公告)日:2020-10-13
Embodiments of a novel system for delivering an expression vector encoding an antigen to a subject that allows for spatiotemporal control over stimulation of the subject's immune response to the antigen are provided. In some embodiments, the expression vector delivery system includes a polymer linked to an adjuvant in prodrug form that can form polymer nanoparticles and enter a cell (such as an immune cell) under physiological conditions. In some embodiments, the adjuvant is linked to the polymer by an enzyme degradable labile bond, the cleavage of which activates the adjuvant to stimulate an immune response.
本发明提供了一种新型系统的实施方案,该系统可将编码抗原的表达载体递送至受试者体内,从而对刺激受试者对抗原的免疫反应进行时空控制。在一些实施方案中,表达载体递送系统包括与原药形式的佐剂相连的聚合物,该佐剂可形成聚合物纳米颗粒并在生理条件下进入细胞(如免疫细胞)。在某些实施方案中,佐剂通过酶可降解的易变键与聚合物连接,酶可降解的易变键的裂解可激活佐剂以刺激免疫反应。