[EN] METAL/RADIOMETAL-LABELED PSMA INHIBITORS FOR PSMA-TARGETED IMAGING AND RADIOTHERAPY [FR] INHIBITEURS DU PSMA MARQUÉS PAR UN MÉTAL/RADIOMÉTAL POUR IMAGERIE ET RADIOTHÉRAPIE CIBLÉES VERS LE PSMA
Synthesis and Evaluation of Gd<sup>III</sup>-Based Magnetic Resonance Contrast Agents for Molecular Imaging of Prostate-Specific Membrane Antigen
作者:Sangeeta Ray Banerjee、Ethel J. Ngen、Matthew W. Rotz、Samata Kakkad、Ala Lisok、Richard Pracitto、Mrudula Pullambhatla、Zhengping Chen、Tariq Shah、Dmitri Artemov、Thomas J. Meade、Zaver M. Bhujwalla、Martin G. Pomper
DOI:10.1002/anie.201503417
日期:2015.9.7
Magneticresonance (MR) imaging is advantageous because it concurrently provides anatomic, functional, and molecular information. MR molecular imaging can combine the high spatial resolution of this established clinical modality with molecular profiling in vivo. However, as a result of the intrinsically low sensitivity of MR imaging, high local concentrations of biological targets are required to generate
磁共振成像(MR)具有优势,因为它同时提供了解剖,功能和分子信息。MR分子成像可以将这种既定临床模式的高空间分辨率与体内分子谱相结合。但是,由于MR成像固有的低灵敏度,需要高局部浓度的生物靶标才能产生可分辨的MR对比度。我们假设前列腺特异性膜抗原(PSMA)是前列腺癌成像和治疗的有吸引力的靶标,可以作为基于MR的分子成像的合适生物标记。我们已经合成了三种新的基于高亲和力,低分子量Gd III的PSMA靶向造影剂,其中包含一到三种Gd III 每分子螯合。我们评估了这些试剂在溶液,前列腺癌细胞和体内实验模型中的弛豫特性,以证明基于PSMA的MR分子成像的可行性。
Metal/radiometal-labeled PSMA inhibitors for PSMA-targeted imaging and radiotherapy
申请人:THE JOHNS HOPKINS UNIVERSITY
公开号:US10683272B2
公开(公告)日:2020-06-16
Low-molecular weight gadolinium (Gd)-based MR contrast agents for PSMA-specific Ti-weighted MR imaging are disclosed. The (Gd)-based MR contrast agents exhibit high binding affinity for PSMA and exhibit specific Ti contrast enhancement at PSMA+ cells. The PSMA-targeted Gd-based MR contrast agents can be used for PSMA-targeted imaging in vivo. 86Y-labeled PSMA-binding ureas also are provided, wherein the PSMA-binding ureas also are suitable for use with other radiotherapeutics.
Multimeric Near IR–MR Contrast Agent for Multimodal <i>In Vivo</i> Imaging
作者:Victoria S. R. Harrison、Christiane E. Carney、Keith W. MacRenaris、Emily A. Waters、Thomas J. Meade
DOI:10.1021/jacs.5b04509
日期:2015.7.22
Multiple imaging modalities are often required for in vivo imaging applications that require both high probe sensitivity and excellent spatial and temporal resolution. In particular, MR and optical imaging are an attractive combination that can be used to determine,both molecular and anatomical information. Herein, we describe the synthesis and in vivo testing of two Multimeric NIR-MR contrast agents that contain three Gd(III) chelates and an IR-783 dye moiety, One agent contains a PEG linker and the other a short alkyl linker. These agents label cells with extraordinary efficacy and can be detected in vivo using both imaging mdalities. Biodistribution of the PEGylated agent shows observable fluorescence in xenograft MCF7 tumors and renal clearance by MR imaging.
METAL/RADIOMETAL-LABELED PSMA INHIBITORS FOR PSMA-TARGETED IMAGING AND RADIOTHERAPY
申请人:The Johns Hopkins University
公开号:EP3140282B1
公开(公告)日:2019-07-10
[EN] METAL/RADIOMETAL-LABELED PSMA INHIBITORS FOR PSMA-TARGETED IMAGING AND RADIOTHERAPY<br/>[FR] INHIBITEURS DU PSMA MARQUÉS PAR UN MÉTAL/RADIOMÉTAL POUR IMAGERIE ET RADIOTHÉRAPIE CIBLÉES VERS LE PSMA
申请人:UNIV JOHNS HOPKINS
公开号:WO2015171792A1
公开(公告)日:2015-11-12
Low-molecular weight gadolinium (Gd)-based MR contrast agents for PSMA- specific Ti-weighted MR imaging are disclosed. The (Gd)-based MR contrast agents exhibit high binding affinity for PSMA and exhibit specific Ti contrast enhancement at PSMA+ cells. The PSMA-targeted Gd-based MR contrast agents can be used for PSMA- targeted imaging in vivo. 86Y-labeled PSMA-binding ureas also are provided, wherein the PSMA-binding ureas also are suitable for use with other radiotherapeutics.