Composition Containing Novel Glutamic Acid Derivative And Block Copolymer, And Use Thereof
申请人:Nippon Kayaku Kabushiki Kaisha
公开号:US20200190101A1
公开(公告)日:2020-06-18
Provided is a pharmaceutical preparation that is suitable for more effectively exhibiting the efficacy of a glutamic acid derivative, which is a GGT-recognizable prodrug, by producing a composition including a glutamic acid derivative capable of rapidly releasing a physiologically active substance by being recognized by GGT, or a pharmacologically acceptable salt thereof; and a block copolymer in which a polyethylene glycol segment is linked to a polyamino acid segment with a hydrophobic group. Particularly, the composition based on a glutamic acid derivative that uses an antitumor compound as a physiologically active substance is capable of effectively accumulating the glutamic acid derivative at a tumor affected area, exhibits a superior effect against tumors, and is capable of suppressing the release of a physiologically active substance in bone marrow tissue where the expression ratio of GGT is low. Therefore, side effects such as myelosuppression, which pose a problem in the use of antitumor drugs, may be avoided.
提供的是一种药物制剂,适用于更有效地展现谷氨酸衍生物的功效,该衍生物是一种GGT可识别的前药,通过制备包括一种能够被GGT识别从而快速释放生理活性物质的谷氨酸衍生物或其药理学可接受的盐的组合物;以及一种嵌段共聚物,其中聚乙二醇段与一个疏水基团连接到一个聚氨基酸段。特别是,基于谷氨酸衍生物的组合物使用抗肿瘤化合物作为生理活性物质,能够有效地在受肿瘤影响的区域积累谷氨酸衍生物,对肿瘤具有优越效果,并能够抑制在GGT表达比例较低的骨髓组织中释放生理活性物质。因此,可以避免使用抗肿瘤药物时可能出现的骨髓抑制等副作用。