申请人:XenoPort, Inc.
公开号:US20030158089A1
公开(公告)日:2003-08-21
Disclosed herein are conjugates comprising a therapeutic agent (e.g., a drug) which is linked to a conjugate moiety that is itself, or itself in combination with the agent, is a good substrate for the sodium dependent multi-vitamin transporter (SMVT). The conjugates have a molecular weight below 1500 daltons and exhibit increased uptake via SMVT through the cells lining the gastrointestinal lumen, and hence higher bioavailability, when administered orally compared to the therapeutic agent itself Also disclosed are methods of delivering agents that, as a result of linkage to a conjugate moiety, are good substrates of the SMVT transporter. Further disclosed are methods of screening conjugates or conjugate moieties, linked or linkable to a therapeutic agent, for capacity to be transported as substrates through the SMVT transporter.
本文披露了包含治疗剂(例如药物)的共轭物,该治疗剂与一个共轭基团连接,该共轭基团本身或与该治疗剂结合后是钠依赖性多维生素转运蛋白(SMVT)的良好底物。这些共轭物的分子量低于1500道尔顿,并且通过肠道腔内细胞的SMVT表现出增加的摄取,因此在口服给药时具有更高的生物利用度,与治疗剂本身相比。还披露了通过连接到共轭基团的药剂而成为SMVT转运蛋白的良好底物的传递方法。此外,还披露了筛选共轭物或共轭基团的方法,这些共轭物或共轭基团与治疗剂连接或可连接,具有作为底物通过SMVT转运蛋白进行转运的能力。