Zhang Shu, Jiang Kai, Zhang Qinle, Guo Kun, Liu Yinkun
Liver Cancer Institute, Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, 136 Yi Xue Yuan Road, Shanghai, 200032, People's Republic of China.
Glycoconj J. 2015 May;32(3-4):119-25. doi: 10.1007/s10719-015-9576-8. Epub 2015 Feb 22.
Serum paraoxonase 1 (PON1) is highly fucosylated in hepatocellular carcinoma (HCC) compared with liver cirrhosis (LC). Herein, lectin ELISA using Aleuria aurantia lectin (AAL) was established, which specifically measured optical density (OD) value of serum fucosylated PON1. PON1 protein ELISA was applied simultaneously. ELISA Index (OD value of fucosylated PON1/OD value of protein PON1) was introduced to indicate PON1 fucosylation level on its protein level (Fuc-PON1). ELISA Index in training group (90 LC and 90 HCC) was measured and area under the ROC curve (AUROC) was 0.803 with 80 % of sensitivity and 64.4 % of specificity in distinguishing early HCC from LC. Within training group, AFP(-) HCC (20/90) exhibited better AUROC (0.850), higher sensitivity (90 %) and specificity (75 %) than AFP(+) HCC (70/90). An independent testing set (20 LC and 20 HCC) validated the model and 17 HCC patients were successfully predicted. Meanwhile, serum AFP of 43 LC and 43 HCC had an AUROC of 0.760 with sensitivity of 79.1 % and specificity of 53.5 %. Thus, Fuc-PON1 may serve as a glycan biomarker for distinguishing early HCC from LC patients even with low AFP levels.
与肝硬化(LC)相比,血清对氧磷酶1(PON1)在肝细胞癌(HCC)中高度岩藻糖基化。在此,建立了使用橙黄网柄牛肝菌凝集素(AAL)的凝集素酶联免疫吸附测定法(ELISA),该方法可特异性测量血清岩藻糖基化PON1的光密度(OD)值。同时应用PON1蛋白ELISA。引入ELISA指数(岩藻糖基化PON1的OD值/蛋白PON1的OD值)以指示PON1在其蛋白质水平上的岩藻糖基化水平(Fuc-PON1)。测量了训练组(90例LC和90例HCC)中的ELISA指数,在区分早期HCC与LC时,ROC曲线下面积(AUROC)为0.803,灵敏度为80%,特异性为64.4%。在训练组中,AFP(-)HCC(20/90)表现出比AFP(+)HCC(70/90)更好的AUROC(0.850)、更高的灵敏度(90%)和特异性(75%)。一个独立测试集(20例LC和20例HCC)验证了该模型,成功预测了17例HCC患者。同时,43例LC和43例HCC患者的血清AFP的AUROC为0.760,灵敏度为79.1%,特异性为53.5%。因此,即使在AFP水平较低的情况下,Fuc-PON1也可作为区分早期HCC与LC患者的聚糖生物标志物。