Diazen-1-ium-1,2-diolated nitric oxide donor ester prodrugs of 1-(4-methanesulfonylphenyl)-5-aryl-1H-pyrazol-3-carboxylic acids: Synthesis, nitric oxide release studies and anti-inflammatory activities
摘要:
A new group of hybrid nitric oxide-releasing anti-inflammatory drugs (NONO-coxibs) wherein an O(2)-acetoxymethyl-1-(N-ethyl-N-methylamino)diazen-1-ium-1,2-diolate (11a-c) NO-donor moiety is attached directly to the carboxylic acid group of 1-(4-methanesulfonylphenyl)-5-aryl-1H-pyrazol-3-carboxylic acids were synthesized. The diazen-1-ium-1,2-diolate compounds 11a-c all released a low amount of NO upon incubation with phosphate buffer (PBS) at pH 7.4 (7.7-9.3% range). In comparison, the percentage of NO released was significantly higher (67.5-73.6% of the theoretical maximal release of two molecules of NO/molecule of the parent hybrid ester prodrug) when the diazen-1-ium-1,2-diolate ester prodrugs were incubated in the presence of rat serum. These incubation studies suggest that both NO and the anti-inflammatory 1-(4-methanesulfonylphenyl)-5-(4-H, 4-F or 4-Me-phenyl)-1H-pyrazol-3- carboxylic acid (9a-c) would be released from the parent NONO-coxib upon in vivo cleavage by non-specific serum esterases. The 1-(4-methanesulfonylphenyl)-5-(4-H, 4-F or 4-Me-phenyl)-1H-pyrazol-3- carboxylic acids (9a-c) exhibited AI activities (ID(50) = 85.2-104.4 mg/kg po range) between that exhibited by the reference drugs aspirin (ID(50) = 128.7 mg/kg po) and celecoxib (ID(50) = 10.8 mg/kg po). Hybrid ester anti-inflammatory/NO-donor prodrugs (NONO-coxibs) offers a potential drug design concept targeted toward the development of anti-inflammatory drugs that are devoid of adverse ulcerogenic and/or cardiovascular effects. (c) 2008 Elsevier Ltd. All rights reserved.
Exploring Nitric Oxide (NO)-Releasing Celecoxib Derivatives as Modulators of Radioresponse in Pheochromocytoma Cells
摘要:
COX-2可以被视为临床相关的分子靶点,特别是用于辅助治疗,尤其是放射增敏治疗。在这方面,使用选择性COX-2抑制剂,例如与放疗或内放射治疗结合使用,代表了一种有趣的治疗选择。基于我们自己的发现,一氧化氮(NO)释放和Celecoxib衍生的COX-2抑制剂(COXIBs)在体外显示出有前途的放射增敏效果,我们在此介绍了一系列八种新型NO-COXIBs的开发,这些化合物在其周围取代模式和化学和体外特性上有所不同。发现COX-1和COX-2的抑制能力与领先的NO-COXIBs相当,而NO释放特性主要受到吡唑酮4位取代基(Cl vs. H)的影响。在磺酰胺残基处引入N-丙酰胺作为潜在的前药策略,可显著降低脂溶性并消除COX抑制,而NO释放特性则没有明显影响。在体外测试NO-COXIBs与单剂外部X射线照射以及[177Lu]LuCl3治疗在HIF2α阳性小鼠嗜铬细胞瘤(MPC-HIF2a)肿瘤球体中的联合应用。当直接应用于X射线照射或177Lu治疗之前时,NO-COXIBs表现出放射保护效果,Celecoxib作为对照也是如此。当在X射线照射后短时间内应用时,观察到放射增敏效果。总的来说,与Celecoxib相比,NO-COXIBs被发现具有更强的放射保护作用,这不需要进一步的嗜铬细胞瘤前临床研究。然而,可以考虑将这里开发的NO-COXIBs作为放射保护剂评估用于健康组织,特别是在照射之前直接使用。
Methods and compositions for diagnostic and therapeutic targeting of COX-2
申请人:Marnett J. Lawrence
公开号:US20070292352A1
公开(公告)日:2007-12-20
The presently disclosed subject matter provides compositions that selectively bind cyclooxygenase-2 and comprise a therapeutic and/or diagnostic moiety. Also provided are methods for using the disclosed compositions for diagnosing (i.e., by imaging) a target cell and/or treating a disorder associated with a cyclooxygenase-2 biological activity.
The aim of this study is to investigate the influence of deuteration and elongation on an 18F-labeled COX-2 inhibitor with focus on metabolic stability to develop suitable COX-2 targeting radiotracers.
METHODS AND COMPOSITIONS FOR DIAGNOSTIC AND THERAPEUTIC TARGETING OF COX-2
申请人:Marnett Lawrence J.
公开号:US20130052138A1
公开(公告)日:2013-02-28
The presently disclosed subject matter provides compositions that selectively bind cyclooxygenase-2 and comprise a therapeutic and/or diagnostic moiety. Also provided are methods for using the disclosed compositions for diagnosing (i.e., by imaging) a target cell and/or treating a disorder associated with a cyclooxygenase-2 biological activity.