人类结直肠癌的独特尿液代谢特征。
Distinct urinary metabolic profile of human colorectal cancer.
机构信息
Department of Chemistry, East China Normal University, Shanghai 200062, China.
出版信息
J Proteome Res. 2012 Feb 3;11(2):1354-63. doi: 10.1021/pr201001a. Epub 2011 Dec 28.
A full spectrum of metabolic aberrations that are directly linked to colorectal cancer (CRC) at early curable stages is critical for developing and deploying molecular diagnostic and therapeutic approaches that will significantly improve patient survival. We have recently reported a urinary metabonomic profiling study on CRC subjects (n = 60) and health controls (n = 63), in which a panel of urinary metabolite markers was identified. Here, we report a second urinary metabonomic study on a larger cohort of CRC (n = 101) and healthy subjects (n = 103), using gas chromatography time-of-flight mass spectrometry and ultra performance liquid chromatography quadrupole time-of-flight mass spectrometry. Consistent with our previous findings, we observed a number of dysregulated metabolic pathways, such as glycolysis, TCA cycle, urea cycle, pyrimidine metabolism, tryptophan metabolism, polyamine metabolism, as well as gut microbial-host co-metabolism in CRC subjects. Our findings confirm distinct urinary metabolic footprints of CRC patients characterized by altered levels of metabolites derived from gut microbial-host co-metabolism. A panel of metabolite markers composed of citrate, hippurate, p-cresol, 2-aminobutyrate, myristate, putrescine, and kynurenate was selected, which was able to discriminate CRC subjects from their healthy counterparts. A receiver operating characteristic curve (ROC) analysis of these markers resulted in an area under the receiver operating characteristic curve (AUC) of 0.993 and 0.998 for the training set and the testing set, respectively. These potential metabolite markers provide a novel and promising molecular diagnostic approach for the early detection of CRC.
一系列与结直肠癌(CRC)早期可治愈阶段直接相关的代谢异常对于开发和部署分子诊断和治疗方法至关重要,这些方法将显著提高患者的生存率。我们最近报道了一项关于 CRC 患者(n=60)和健康对照者(n=63)的尿液代谢组学研究,其中确定了一组尿液代谢标志物。在这里,我们报告了第二项关于更大队列的 CRC(n=101)和健康对照者(n=103)的尿液代谢组学研究,使用气相色谱飞行时间质谱和超高效液相色谱四极杆飞行时间质谱。与我们之前的发现一致,我们观察到一些失调的代谢途径,如糖酵解、TCA 循环、尿素循环、嘧啶代谢、色氨酸代谢、多胺代谢以及 CRC 患者中的肠道微生物-宿主共代谢。我们的研究结果证实了 CRC 患者独特的尿液代谢特征,其特征是来自肠道微生物-宿主共代谢的代谢物水平发生改变。选择了一组由柠檬酸、马尿酸、对甲酚、2-氨基丁酸、肉豆蔻酸、腐胺和犬尿氨酸组成的代谢标志物,能够将 CRC 患者与健康对照者区分开来。这些标志物的接收者操作特征曲线(ROC)分析在训练集和测试集上分别得到了 0.993 和 0.998 的接收者操作特征曲线下面积(AUC)。这些潜在的代谢标志物为 CRC 的早期检测提供了一种新颖且有前途的分子诊断方法。