Sensitization of Cancer Cells to DNA Damaging Agents by Imidazolines
摘要:
Apoptosis, or programmed cell death, is a cellular mechanism used to regulate cell number and eliminate damaged or mutated cells. Concomitant with the initiation of the apoptotic cell signal, chemotherapeutic agents also induce anti-apoptotic factors, such as NF-kappa B, which compromise the overall efficacy of chemotherapeutic anticancer treatment. Here we describe an adjuvant therapy in which a small molecule is used to sensitize cancer cells toward apoptosis induced by chemotherapeutics. Our results indicate that the imidazoline 1d modulates the pro-survival NF-kappa B pathway and selectively sensitizes cancer cells toward DNA damaging agents, thus enhancing the overall efficacy of the treatment. Pretreatment of cancer cells with the noncytotoxic imidazoline 1d (10 nM) resulted in a significant increase in apoptosis and anticancer efficacy of the clinically significant DNA damaging agents camptothecin and cisplatin. Noncancerous cells remained unaffected during this regimen.
A diastereomers of imidazolines as 4-position acids are described. The imidazoline diastereomers potentiate the activity of antitumor drugs and are potent inhibitors of the transcription factor NF-κB.
Substituted Imidazoline Compounds
申请人:Tepe Jetze
公开号:US20090156830A1
公开(公告)日:2009-06-18
The invention relates to compositions comprising substituted imidazoline compounds including prodrugs, and salts thereof. In some embodiments, the invention relates to the use of these compositions as therapeutic agents, preferably for the treatment of arthritis or cancer. In further embodiments, The invention relates to the pharmaceutical compositions with effective amounts of substituted imidazoline compounds disclosed herein that function as agonist or antagonists of the genetic expression or interactions with transcription factor NF-κB.
US8252942B2
申请人:——
公开号:US8252942B2
公开(公告)日:2012-08-28
Sensitization of Cancer Cells to DNA Damaging Agents by Imidazolines
作者:Vasudha Sharma、Satyamaheshwar Peddibhotla、Jetze J. Tepe
DOI:10.1021/ja060273f
日期:2006.7.19
Apoptosis, or programmed cell death, is a cellular mechanism used to regulate cell number and eliminate damaged or mutated cells. Concomitant with the initiation of the apoptotic cell signal, chemotherapeutic agents also induce anti-apoptotic factors, such as NF-kappa B, which compromise the overall efficacy of chemotherapeutic anticancer treatment. Here we describe an adjuvant therapy in which a small molecule is used to sensitize cancer cells toward apoptosis induced by chemotherapeutics. Our results indicate that the imidazoline 1d modulates the pro-survival NF-kappa B pathway and selectively sensitizes cancer cells toward DNA damaging agents, thus enhancing the overall efficacy of the treatment. Pretreatment of cancer cells with the noncytotoxic imidazoline 1d (10 nM) resulted in a significant increase in apoptosis and anticancer efficacy of the clinically significant DNA damaging agents camptothecin and cisplatin. Noncancerous cells remained unaffected during this regimen.
The invention relates to compositions comprising substituted imidazoline compounds including prodrugs, and salts thereof. In some embodiments, the invention relates to the use of these compositions as therapeutic agents, preferably for the treatment of arthritis or cancer. In further embodiments, The invention relates to the pharmaceutical compositions with effective amounts of substituted imidazoline compounds disclosed herein that function as agonist or antagonists of the genetic expression or interactions with transcription factor NF-ϰB.