Department of Colorectal Surgery, Changhai Hospital, The Second Military Medical University, Shanghai, 200433, China.
Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Chinese PLA General Hospital, Beijing, 100048, China.
Int J Biol Sci. 2019 Oct 21;15(12):2750-2762. doi: 10.7150/ijbs.36916. eCollection 2019.
The role of the novel oncogene, mitochondrial transcription termination factor (MTERFD1), in human colorectal cancer (CRC) is unclear. Here, we report the role MTERFD1 in CRC. We conducted plasmid construction and transfection analyses, cell proliferation assays, apoptosis detection assays, ELISA, western blotting, and qRT-PCR using cell culture applications. MTERFD1 was upregulated in human and chemically induced mouse CRC tissues. functional assays showed that MTERFD1 overexpression promoted human CRC cell proliferation, whereas knockdown of endogenous MTERFD1 significantly enhanced apoptosis in these cells. MTERFD1 expression was positively linked to irradiation resistance in CRC cells. Furthermore, interleukin (IL)-6 and IL-11 were identified as the effector molecules of MTERFD1 in its oncogenic role and irradiation resistance in CRC cells. Our results demonstrated that MTERFD1 played an oncogenic role in CRC development and enhanced irradiation resistance by regulating IL-6 and IL-11 in CRC cells. MTERFD1 may serve as a potential prognostic and therapeutic marker for radiotherapy in CRC.
新型癌基因线粒体转录终止因子(MTERFD1)在人结直肠癌(CRC)中的作用尚不清楚。本研究报告了 MTERFD1 在 CRC 中的作用。通过质粒构建和转染分析、细胞增殖检测、凋亡检测、ELISA、Western blot 和 qRT-PCR 等细胞培养应用,检测 MTERFD1 在人CRC 组织和化学诱导的小鼠 CRC 组织中的表达情况。功能分析表明,MTERFD1 过表达促进人 CRC 细胞增殖,而内源性 MTERFD1 的敲低则显著增强这些细胞的凋亡。MTERFD1 的表达与 CRC 细胞的辐射抗性呈正相关。此外,IL-6 和 IL-11 被鉴定为 MTERFD1 在 CRC 细胞中发挥致癌作用和辐射抗性的效应分子。本研究结果表明,MTERFD1 通过调节 CRC 细胞中的 IL-6 和 IL-11 发挥致癌作用,并增强辐射抗性。MTERFD1 可能成为 CRC 放疗的潜在预后和治疗标志物。