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Rapid and quantitative method for evaluating the personal therapeutic potential of cancer drugs

机译:快速定量的评估癌症药物个人治疗潜力的方法

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摘要

An in vitro, rapid, and quantitative cell-based assay is needed to predict the efficacy of cancer drugs in individual patients, because a cancer patient may have unconventional aspects of tumor development. Here we report a rapid and label-free quantitative method for verifying apoptosis in living cancer cells cultured on a sensor chip with a newly developed high-precision surface plasmon resonance (SPR) sensor. The time-course cell reaction was monitored as the SPR angle change rate for 5 min during a 35-min cell culture of pancreatic cancer lines with a drug. The time-course cell reaction was significantly related to cell viability counted after 48 h as assessed by caspase-3 activity assay of apoptosis. Furthermore, the detected SPR signal was derived from the decrease in inner mitochondrial membrane potential. The results obtained are universally valid for various cancer drugs mediating apoptosis through different cell-signaling pathways and even for combined use in various pancreatic cancer cell lines. This system can be applied in a clinical setting to evaluate the personal therapeutic potential of drugs including pharmacodynamic interactions.
机译:需要体外,快速和定量的基于细胞的测定法来预测个体患者中的癌症药物的疗效,因为癌症患者可能具有肿瘤发展的非常规方面。在这里,我们报告了一种快速且无标签的定量方法,可用于验证使用新开发的高精度表面等离子体共振(SPR)传感器在传感器芯片上培养的活癌细胞的凋亡。在胰腺癌细胞系中用药物进行35分钟的细胞培养期间,以5分钟的SPR角变化率监测时程细胞反应。通过凋亡的胱天蛋白酶3活性测定评估,时程细胞反应与48小时后计数的细胞活力显着相关。此外,检测到的SPR信号是从内部线粒体膜电位的降低中得出的。所获得的结果对于通过不同的细胞信号途径介导凋亡的各种抗癌药物普遍有效,甚至可用于多种胰腺癌细胞系。该系统可用于临床环境,以评估药物的个人治疗潜力,包括药效相互作用。

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