Synthesis and preliminary in vitro biological evaluation of new carbon-11-labeled celecoxib derivatives as candidate PET tracers for imaging of COX-2 expression in cancer
作者:Mingzhang Gao、Min Wang、Kathy D. Miller、Qi-Huang Zheng
DOI:10.1016/j.ejmech.2011.05.024
日期:2011.9
The enzyme cyclooxygenase-2 (COX-2) is overexpressed in a variety of malignant tumors. This study was designed to develop newradiotracers for imaging of COX-2 in cancer using biomedical imaging technique positron emission tomography (PET). Carbon-11-labeled celecoxib derivatives, [11C]4a–c and [11C]8a–d, were prepared by O-[11C] methylation of their corresponding precursors using [11C]CH3OTf under
Development of celecoxib-derived antifungals for crop protection
作者:Yihui Ma、Lirong Yang、Xiuxiu Liu、Jun Yang、Xianglong Sun
DOI:10.1016/j.bioorg.2020.103670
日期:2020.4
Selective COX-2 inhibitor celecoxib was found directly inhibiting the growth of tested phytopathogenic fungi with the inhibitory rate ranging from 30 to 40% at 100 µg/ml. Lead optimization of celecoxib led to the identification of compound 12 among its derivatives as the most active antifungal candidate. The antifungal effect of compound 12 was supposed to be independent of COX-2 inhibition. Transcriptome
CYP2C9 Structure−Metabolism Relationships: Optimizing the Metabolic Stability of COX-2 Inhibitors
作者:Marie M. Ahlström、Marianne Ridderström、Ismael Zamora、Kristina Luthman
DOI:10.1021/jm0705096
日期:2007.9.1
The cytochrome P450 (CYP) family is composed of a large group of monooxygenases that mediate the metabolism of xenobiotics and endogenous compounds. CYP2C9, one of the major isoforms of the CYP family, is responsible for the phase I metabolism of a variety of drugs. The aim of the present investigation is to use rational design together with MetaSite, a metabolism site prediction program, to synthesize compounds that retain their pharmacological effects but that are metabolically more stable in the presence of CYP2C9. The model compound for the study is the nonsteroidal anti-inflammatory drug celecoxib, a COX-2 selective inhibitor and known CYP2C9 substrate. Thirteen analogs of celecoxib were designed, synthesized, and evaluated with regard to their metabolic properties and pharmacologic effects. The docking solutions and the predictions from MetaSite gave useful information leading to the design of new compounds with improved metabolic properties.
A novel celecoxib analog UTX-121 inhibits HT1080 cell invasion by modulating membrane-type 1 matrix metalloproteinase
We designed and synthesized a celecoxib derivative UTX-121 to enhance its anti-tumor activity. Similar to celecoxib, this compound could also inhibit matrix metalloproteinase (MMP)-9 activity. In addition, UTX-121 suppressed membrane-type 1 MMP (MT1-MMP)-mediated pro-MMP-2 activation by disturbing the cell surface expression of MT1-MMP. UTX-121 also impeded the glycosylation of cell surface proteins, resulting in the suppression of cell attachment to fibronectin. This inhibition by UTX-121 caused the reduction of fibronectin-stimulated focal adhesion kinase activation, Alt activation, and cell migration. Consequently, UTX-121 treatment significantly inhibited fibronectin-induced HT1080 cell invasion into the Matrigel. UTX-121 may be a potent lead compound that can be used to develop a novel anti-tumor drug. (C) 2019 Elsevier Inc. All rights reserved.