Nanoparticle-mediated delivery of cytokines for maintenance of the regulatory T cell phenotype
申请人:Yale University
公开号:US10034917B2
公开(公告)日:2018-07-31
Compositions for delivery of growth factors needed for stable Tregs and methods of use thereof are provided. In preferred embodiments, the compositions can induce, increase, or enhance a functionally robust induced CD4 Treg population (e.g., Foxp3+ Treg) in vivo or ex vivo. The compositions generally include delivery vehicles including TGF-β and IL-2. Delivery vehicles include, for example, polymeric particles, silica particles, liposomes, or multilamellar vesicles. The TGF-β and IL-2 are typically co-loaded into, attached to the surface of, and/or enclosed within the delivery vehicle into the same particle for simultaneous co-delivery to cells such as T cells. Preferably the delivery vehicles are targeted to CD4. The compositions and cells treated therewith can be used in various methods of treating, for example, inflammation, inflammatory and autoimmune diseases and disorders, and inducing or maintaining tolerance including graft and transplant tolerance.
本研究提供了输送稳定 Tregs 所需的生长因子的组合物及其使用方法。在优选的实施方案中,这些组合物可以在体内或体外诱导、增加或增强功能稳健的诱导型 CD4 Treg 群体(如 Foxp3+ Treg)。组合物一般包括 TGF-β 和 IL-2 的递送载体。递送载体包括聚合物颗粒、二氧化硅颗粒、脂质体或多胶束囊泡等。TGF-β和IL-2通常被共同载入、附着在输送载体的表面和/或封闭在同一颗粒内,以便同时共同输送给细胞,如T细胞。输送载体最好以 CD4 为靶标。组合物和经其处理的细胞可用于各种治疗方法,例如炎症、炎症和自身免疫性疾病和紊乱,以及诱导或维持耐受性,包括移植物和移植耐受性。