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ABBS: ICT1 promotes gastric cancer

已有 566 次阅读 2019-6-10 10:28 |个人分类:期刊新闻|系统分类:论文交流| gastric cancer, caspase-3, PARP

Immature colon carcinoma transcript-1 promotes proliferation of gastric cancer cells

Zishu Wang, Gongsheng Jin, Qiong Wu, Rui Wang, and Yumei Li

Department of Medical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China

Acta Biochim Biophys Sin 2017, 49: 979–988; doi: 10.1093/abbs/gmx099

Gastric cancer is the fourth most common malignant tumor and has been considered as one of the leading causes of cancer-related death worldwide. The identification of the molecular mechanism during gastric cancer progression is urgently needed, which will help to develop more effective treatment strategies. As a component of the human mitoribosome, immature colon carcinoma transcript-1 (ICT1) might be involved in tumor formation and progression. However, its biological function and the corresponding mechanism in gastric cancer have been poorly characterized. To study the mechanism of ICT1 in gastric cancer, we first investigated the mRNA levels of ICT1 in human normal and gastric cancer tissues using datasets from the publicly available Oncomine database. The results showed that ICT1 is overexpressed in gastric cancer tissues. Then in order to study the role of ICT1 in gastric cancer, two shRNAs were used to silence ICT1 in MGC80-3 and AGS cells. Functional analysis showed ICT1 knockdown significantly inhibited the proliferation of gastric cancer cells and induced apoptosis. Further, mechanistic study demonstrated that ICT1 silencing induced cell-cycle arrest at G2/M phase via the suppression of cyclin A2 and cyclin B1. In addition, ICT1 silencing also increased cleaved caspase-3 and activated PARP in gastric cancer cells. These findings suggest that ICT1 may play a crucial role in promoting gastric cancer proliferation in vitro.


The proposed mechanism by which ICT1 mediates cell-cycle arrest and apoptosis




1 A functional peptidyl-tRNA hydrolase, ICT1, has been recruited into the human mitochondrial ribosome

2 ICT1 comes to the rescue of mitochondrial ribosomes

3 miR-205 regulation of ICT1 has an oncogenic potential via promoting the migration and invasion of gastric cancer cells

4 Immature colon carcinoma transcript-1 promotes cell growth of hepatocellular carcinoma via facilitating cell cycle progression and apoptosis resistance

5 ICT1 knockdown inhibits breast cancer cell growth via induction of cell cycle arrest and apoptosis

6 Immature Colon Carcinoma Transcript-1 (ICT1) Expression Correlates with Unfavorable Prognosis and Survival in Patients with Colorectal Cancer

Knockdown of immature colon carcinoma transcript 1 induces suppression of proliferation, S-phase arrest and apoptosis in leukemia cells

8 Knockdown of immature colon carcinoma transcript-1 inhibits proliferation of glioblastoma multiforme cells through Gap 2/mitotic phase arrest


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