| 摘要 |
<p>The present invention pertains to a method for delivering a neuropharmaceutical or diagnostic agent across the blood brain barrier to the brain of a host. The method comprises administering to the host a therapeutically effective amount of an antibody-neuropharmaceutical or diagnostic agent conjugate wherein the antibody is reactive with a transferrin receptor and the antibody is a chimera between the variable region from one animal source and the constant region from a different animal source. Other aspects of this invention include a delivery system comprising an antibody reactive with a transferrin receptor linked to a neuropharmaceutical or diganostic agent and methods for treating hosts afflicted with a disease associated with a neurological disorder. In embodiments of the present invention, the antibody that is reactive with a tranferrin receptor is a chimeric antibody. This antibody is composed of a variable region, immunologically reactive with the transferrin receptor, that is delivered from one animal source and a constant region that is derived from an animal source other than the one which provided the variable region. The chimeric antibodies of this invention can exist either as isolated entities or as conjugates with a neuropharmaceutical agent for transferal across the blood brain barrier. In the latter mode, the chimeric antibody-neuropharmaceutical agent conjugate forms a delivery system for delivering the neuropharmaceutical agent across the blood brain barrier.</p> |
