Paramagnetic solid lipid nanoparticles (pSLNs) containing metal amphiphilic complexes for MRI
申请人:BRACCO IMAGING S.P.A.
公开号:US10039843B2
公开(公告)日:2018-08-07
The present invention relates to paramagnetic solid lipid nanoparticles (pSLNs) comprising an amphiphilic paramagnetic metal chelating moiety selected from: a diazepine derivative of Formula I and a tetraazocyclododecane derivative of Formula (II): being said chelating moiety complexed to a paramagnetic metal ion selected from the group consisting of: Gd(III), Mn(II), Cr(III), Cu(II), Fe(III), Pr(III), Nd(III), Sm(III), Tb(III), Yb(III), Dy(III), Ho(III) and Er(III), or salts thereof. The invention further relates to the process for preparation of said solid lipid nanoparticles comprising amphiphilic complexes of paramagnetic metals (pSLNs) and to the use of pSLNs as MRI contrast agents in the diagnostic field.
本发明涉及顺磁固体脂质纳米颗粒(pSLNs),其包含一种两亲性顺磁金属螯合基团,该螯合基团选自:式 I 的二氮杂卓衍生物和式(II)的四氮杂环十二烷衍生物:所述螯合基团与选自以下组别的顺磁金属离子络合:Gd(III), Mn(II), Cr(III), Cu(II), Fe(III), Pr(III), Nd(III), Sm(III), Tb(III), Yb(III), Dy(III), Ho(III) 和 Er(III) 或它们的盐。本发明还涉及上述包含顺磁金属两亲络合物(pSLNs)的固体脂质纳米颗粒的制备过程,以及 pSLNs 作为 MRI 造影剂在诊断领域的应用。