Synthesis and characterization of radioiodinated 3-phenethyl-2-indolinone derivatives for SPECT imaging of survivin in tumors
摘要:
Survivin, overexpressed in most cancers, is associated with poor prognosis and resistance to radiation therapy and chemotherapy. Herein, we report the synthesis of three 3-phenethyl-2-indolinone derivatives and their application as in vivo imaging agents for survivin. Of these, 3-(2-(benzo[d][1,3] dioxol-5-yl)- 2-oxoethyl)-3-hydroxy-5- iodoindolin-2-one (IPI-1) showed the highest binding affinity (K-d = 68.3 nM) to recombinant human survivin, as determined by quartz crystal microbalance (QCM). In vitro studies demonstrated that the [I-125]IPI-1 binding in survivin-positive MDA-MB-231 cells was significantly higher than that in survivin-negative MCF-10A cells. In addition, uptake of [I-125]IPI-1 by MDA-MB-231 cells decreased in a dose-dependent manner in the presence of the high-affinity survivin ligand S12; this is indicative of specific binding of [I-125]IPI-1 to cellular survivin protein in vitro. Biodistribution studies in MDA-MB-231 tumor-bearing mice demonstrated the moderate uptake of [I-125]IPI-1 in the tumor tissue (1.37% ID/g) at 30 min that decreased to 0.32% ID/g at 180 min. Co-injection of S12 (2.5 mg/kg) slightly reduced tumor uptake and the tumor/muscle ratio of [I-125]IPI-1. Although further structural modifications are necessary to improve pharmacokinetic properties, our results indicate that PI derivatives may be useful as tumor-imaging probes targeting survivin. (C) 2018 Elsevier Ltd. All rights reserved.
METHOD OF TREATING CANCER USING A SURVIVIN INHIBITOR
申请人:Berezov Alan
公开号:US20120122910A1
公开(公告)日:2012-05-17
Disclosed herein are methods of treating cancer by administering to a patient a small molecule inhibitor of Survivin. Also disclosed herein are methods of inhibiting Survivin dimerization in a patient by administering a compound of formula (I), (II), (III), or (IV). Methods of inducing cell cycle arrest in cancer cells, comprising G2/M stage arrest, in a patient by administering a compound of formula (I), (II), (III), or (IV) are also disclosed. Further disclosed herein are methods of inducing apoptosis in cancer cells in a patient by administering a compound of formula (I), (II), (III), or (IV).
[EN] METHOD OF TREATING CANCER USING A SURVIVIN INHIBITOR<br/>[FR] PROCÉDÉ DE TRAITEMENT D'UN CANCER À L'AIDE D'UN INHIBITEUR DE SURVIVINE
申请人:UNIV PENNSYLVANIA
公开号:WO2010083505A1
公开(公告)日:2010-07-22
Disclosed herein are methods of treating cancer by administering to a patient a small molecule inhibitor of Survivin. Also disclosed herein are methods of inhibiting Survivin dimerization in a patient by administering a compound of formula (I), (II), (III), or (IV). Methods of inducing cell cycle arrest in cancer cells, comprising G2/M stage arrest, in a patient by administering a compound of formula (I), (II), (III), or (IV) are also disclosed. Further disclosed herein are methods of inducing apoptosis in cancer cells in a patient by administering a compound of formula (I), (II), (III), or (IV).