Phan Nam Nhut, Liu Shirui, Wang Chih-Yang, Hsu Hui-Ping, Lai Ming-Derg, Li Chung-Yen, Chen Chien-Fu, Chiao Chung-Chieh, Yen Meng-Chi, Sun Zhengda, Jiang Jia-Zhen
NTT Institute of Hi-Technology, Nguyen Tat Thanh University Ho Chi Minh City 700000, Vietnam.
Department of Mechanical Engineering, School of Engineering, San Francisco State University San Francisco, CA 94143, USA.
Int J Clin Exp Pathol. 2020 May 1;13(5):1220-1242. eCollection 2020.
Although a previous study suggested that erythropoietin-producing hepatoma (EPH) receptors play important roles in tumor progression and the overexpression of EPHs in cancer patients is related to poor prognoses, high-throughput gene expression profiling of EPH family members in different types and subtypes of cancers has so far not been conducted. We herein carried out a series of bioinformatic analyses on expressive profiles of every EPH member across 21 different types of clinical cancers versus matched normal tissues gathered from the Oncomine platform. We validated these results by protein expression study of all EPHs family members by The Human Protein Atlas repository. Our results uncovered the overexpression of most EPH subunits in numerous cancer types, especially the dramatic overexpression of six EPHs members, namely EPHA1, EPHA2, EPHA3, EPHA4 and EPHB1, EPHB2, EPHB3, EPHB4 in bladder, colorectal, esophageal, gastric, and prostate cancers. Furthermore, EPHB2 was specifically highly expressed in cervical cancer, EPHA3 in liver cancer, and EPHB1 in uterine cancer. Collectively, expressive profiles of these EPHs were confirmed and correlated with different cancer subtypes as potential biomarkers. This study provides useful information for further studies on cancer development and clinical treatments.
尽管先前的一项研究表明,促红细胞生成素产生性肝癌(EPH)受体在肿瘤进展中起重要作用,且癌症患者中EPH的过表达与预后不良相关,但迄今为止尚未对不同类型和亚型癌症中EPH家族成员进行高通量基因表达谱分析。我们在此对来自Oncomine平台收集的21种不同类型临床癌症与匹配正常组织中每个EPH成员的表达谱进行了一系列生物信息学分析。我们通过人类蛋白质图谱库对所有EPH家族成员进行蛋白质表达研究来验证这些结果。我们的结果揭示了大多数EPH亚基在多种癌症类型中的过表达,特别是六种EPH成员,即EPHA1、EPHA2、EPHA3、EPHA4以及EPHB1、EPHB2、EPHB3、EPHB4在膀胱癌、结直肠癌、食管癌、胃癌和前列腺癌中的显著过表达。此外,EPHB2在宫颈癌中特异性高表达,EPHA3在肝癌中高表达,EPHB1在子宫癌中高表达。总体而言,这些EPH的表达谱得到了证实,并与不同癌症亚型相关,可作为潜在的生物标志物。本研究为进一步研究癌症发展和临床治疗提供了有用信息。