99Tcm标记抗疟药NGA─PQ的肝靶向性研究

  • 摘要: 以肝细胞膜无唾液酸糖蛋白受体的特异性配体半乳糖新糖白蛋白(NGA)作载体,通过丁二酰胺桥将其与抗疟药磷酸伯氨喹(PQ)偶联,制备了一种肝靶向抗疟药NGA-PQ。经放射性核素显像研究证实,NGA-PQ具有明显的趋肝性和受体介导结合特性,肝最大摄取率高达80.0%,且保留时间较长,NGA-PQ可能成为优良的受体介导肝靶向抗疟药。

     

    Abstract: STUDYONHEPATICTARGETINGOFANTIMALARIALDRUGNGA┐PQLABELLEDWITH99TcmGuanChangtianPangQijieZhongYuguoLiTonglingHeYulingChenQiTanTianzhi(WestChinaUniversityofMedicalSciences,Chengdu610041)ABSTRACTNeoglycoalbumin(NGA),thespecialligandofasialoglycoproteinreceptoronthehepa-tocyteislinkedviaabutanediamidebridgetothefreeaminogroupofprimaquine(PQ)toformaconjugatorNGA-PQ.Toverifyitspropertyoftargetingtohepatocytes,NGA-PQislabeledwith99Tcm,thenrabbitsandchickensimagingareperformed.TheresultsindicatethatNGA-PQhasremarkablelivertaxisandtheuptakeofNGA-PQinliverisover80.0%withfeatureofreceptor-mediatedbindingtohepatocytesinvivo.Therefore,theNGA-PQisconsideredtobeapotentialreceptor-mediatedhepatictargetingantimalarialdrug.Keywords99Tcm99Tcm-NGA-PQimaginghepatictargetingofantimalarialdrug

     

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