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    • 4. 发明申请
    • Magnetoliposome composition for targeted treatment of biological tissue and associated methods
    • 用于靶向治疗生物组织的磁性体脂质体组合物及相关方法
    • US20030211045A1
    • 2003-11-13
    • US10182992
    • 2002-12-13
    • Danuta LeszcyznskaJerzy LeszczynskiMelania BabincovaPeter Babinec
    • A61K049/00A61K038/38A61K038/17A61K031/716A61K031/715A61K039/395A61K031/4162A61K009/127
    • A61K9/0009A61K9/127A61K41/0052
    • A composition for treatment of biological tissue responsive to a an applied magnetic field comprises a plurality of magnetoliposomes, each magnetoliposome of the plurality having a lipid-containing wall defining a vesicle, and a plurality of subdomain superparamagnetic particles, and an inactive prodrug capable of activating into a drug effective for treatment of the biological tissue, the prodrug carried by the plurality of magnetoliposomes for delivery to the biological tissue. A method of treatment for a biological tissue comprises administering the composition to the tissue, concentrating the plurality of magnetoliposomes in the biological tissue responsive to a substantially constant magnetic field, activating the inactive prodrug into an effective drug by applying an electromagnetic field to the concentrated plurality of magnetoliposomes so as to therein generate heat sufficient for activation without appreciable rupture of individual magnetoliposomes of the plurality of magnetoliposomes, and releasing the activated effective drug into the biological tissue by sufficiently increasing permeability of the lipid-containing walls of individual magnetoliposomes of the plurality of magnetoliposomes to thereby release activated drug.
    • 用于治疗施加的磁场的生物组织的组合物包括多个磁胶体,多个磁性脂质体具有限定泡囊的含脂质的壁,以及多个亚结构域的超顺磁性颗粒,以及能够活化的无活性前药 成为有效治疗生物组织的药物,由多个磁胶体携带的前体药物用于递送至生物组织。 用于生物组织的治疗方法包括将组合物施用于组织,响应于基本上恒定的磁场将多种磁胶体浓缩在生物组织中,通过向浓缩的多个元件施加电磁场将非活性前药活化成有效药物 的磁性脂质体,以便在其中产生足够的活化热量,而不会明显破坏多个磁性脂质体的单个磁性脂质体,并且通过充分增加多个磁性脂质体中各个磁性脂质体的含脂质壁的渗透性,将活化的有效药物释放到生物组织中 磁性脂质体从而释放活化的药物。