Structure-activity relationship studies of prostate-specific membrane antigen (PSMA) inhibitors derived from α-amino acid with (S)- or (R)-configuration at P1′ region
摘要:
Prostate-specific membrane antigen (PSMA), a type II membrane glycoprotein, is considered an excellent target for the diagnosis or treatment of prostate cancer. We previously investigated the effect of beta and gamma-amino acids with (S)or (R)-configuration in the S1 pocket on the binding affinity for PSMA. However, comprehensive studies on the effect of alpha-amino acid with (R)-configuration in the S1 ' pocket has not been reported yet. We selected ZJ43 (1) and DCIBzL (5) as templates and synthesized their analogues with (S)or (R)-configuration in the P1 and P1 ' regions. The PSMA-inhibitory activities of compounds with altered chirality in the P1 ' region were dropped dramatically, with their IC50 values changing from nM to mu M ranges. The compounds with (S)-configuration at both P1 and P1 ' regions were more potent than the others. The findings of this study may provide insights regarding the structural modification of PSMA inhibitor in the S1 ' binding pocket.
[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.
Site-Selective, Late-Stage C−H <sup>18</sup>
F-Fluorination on Unprotected Peptides for Positron Emission Tomography Imaging
作者:Zheliang Yuan、Matthew B. Nodwell、Hua Yang、Noeen Malik、Helen Merkens、François Bénard、Rainer E. Martin、Paul Schaffer、Robert Britton
DOI:10.1002/anie.201806966
日期:2018.9.24
Peptides are often ideal ligands for diagnostic molecular imaging due to their ease of synthesis and tuneable targeting properties. However, labelling unmodified peptides with 18F for positronemissiontomography (PET) imaging presents a number of challenges. Here we show the combination of photoactivated sodium decatungstate and [18F]‐N‐fluorobenzenesulfonimide effects site‐selective 18F‐fluorination
Structural and computational basis for potent inhibition of glutamate carboxypeptidase II by carbamate-based inhibitors
作者:Cyril Barinka、Zora Novakova、Niyada Hin、Daniel Bím、Dana V. Ferraris、Bridget Duvall、Gabriel Kabarriti、Reiji Tsukamoto、Milos Budesinsky、Lucia Motlova、Camilo Rojas、Barbara S. Slusher、Tibor András Rokob、Lubomír Rulíšek、Takashi Tsukamoto
DOI:10.1016/j.bmc.2018.11.022
日期:2019.1
2-oxypentanedioic acid was more potent than compound 5 containing a C-terminal glutamic acid (2-aminopentanedioic acid) despite GCPII's preference for peptides containing an N-terminal glutamate as substrates. Subsequent crystallographic analysis revealed that ZJ-43 and its two carbamate analogs 5 and 7 with the same (S,S)-stereochemical configuration adopt a nearly identical binding mode while (R,S)-carbamate
Scaffolds and multifunctional intermediates for imaging PSMA and cancer therapy
申请人:THE JOHNS HOPKINS UNIVERSITY
公开号:US10736974B2
公开(公告)日:2020-08-11
Carbamate and beta-amino acid urea-based scaffolds that have high binding affinity to PSMA are disclosed. These scaffolds can be radiolabeled and used for imaging cells and tumors that express PSMA or for cancer radiotherapy. These compounds also can comprise a fluorescent dye and be used for imaging cells and tumors that express PSMA or for photodynamic therapy.
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.