Zhong Chenhan, Yu Jiekai, Li Dan, Jiang Kai, Tang Yang, Yang Mengyuan, Shen Hong, Fang Xuefeng, Ding Kefeng, Zheng Shu, Yuan Ying
Department of Medical Oncology, (Key Laboratory of Cancer Prevention and Intervention, Chinese National Ministry of Education; Key Laboratory of Molecular Biology in Medical Sciences) The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.
Cancer Institute, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.
J Cell Physiol. 2019 Sep;234(9):15775-15789. doi: 10.1002/jcp.28236. Epub 2019 Jan 29.
Colorectal cancer (CRC) is a leading cause of cancer death. This study was conducted to investigate the functions and mechanisms of Zyxin (ZYX) in CRC. Multiomics analysis associated ZYX with CRC metastasis. ZYX expression levels were increased in human CRC tissues and related to shorter recurrence-free survival. Knockdown of ZYX expression resulted in inhibition of cell growth, invasion, and migration in vitro and in vivo. Comprehensive analysis of gene microarray analysis showed that ZYX may activate the pathway of NUPR1 and JNK, inhibit CST5, regulate focal adhesion (FA), and affect epithelial-mesenchymal transition in CRC cells. Results of gene microarray and membrane protein isobaric tags with relative and absolute quantitation labeling mass spectrometry found ten differentially expressed genes, which were associated with ZYX activity. Furthermore, real-time polymerase chain reaction was used to validate the expression patterns of selected genes in the integrative analysis. Taken together, our findings provide the first evidence that decreased expression level of ZYX impairs CRC cell proliferation and metastasis probably via the FA pathway.
结直肠癌(CRC)是癌症死亡的主要原因。本研究旨在探讨锌指蛋白(ZYX)在结直肠癌中的功能及机制。多组学分析将ZYX与结直肠癌转移相关联。ZYX在人类结直肠癌组织中的表达水平升高,且与无复发生存期缩短有关。敲低ZYX表达导致体外和体内细胞生长、侵袭及迁移受到抑制。基因微阵列分析的综合结果表明,ZYX可能激活NUPR1和JNK通路,抑制CST5,调节粘着斑(FA),并影响结直肠癌细胞的上皮-间质转化。基因微阵列和相对与绝对定量标记质谱的膜蛋白等压标签结果发现了10个差异表达基因,这些基因与ZYX活性相关。此外,在综合分析中使用实时聚合酶链反应来验证所选基因的表达模式。综上所述,我们的研究结果首次证明,ZYX表达水平降低可能通过粘着斑途径损害结直肠癌细胞的增殖和转移。